Overload protector

Abstract

The utility model provides an overload protector, which comprises a shell, a first conductive sheet, a second conductive sheet and an overload protection sheet, and is characterized in that the first conductive sheet penetrates through the shell and is used for being connected with a conductive wire; the second conducting strip penetrates through the shell and is used for being connected with a conductive wire. The second conducting plate and the first conducting plate are positive and negative plates; the overload protection sheet is accommodated in the accommodating cavity and comprises a first connecting part and a second connecting part; the first connecting part is electrically connected with the first conducting strip, and the second connecting part is connected to the first connecting part and moves relative to the first connecting part in an overload state; according to the overload protector, the second connecting part is in contact with the second conducting strip in the natural state, or the second connecting part is separated from the second conducting strip in the overload state, the second conducting strip is separated through the overload protection piece in the overload state, the situation that the second conducting strip is separated under the manual action is avoided, overload protection is achieved, and the safety of the overload protector is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of overload protectors, and in particular to an overload protector. Background Technology

[0002] With the development of technology, overload protectors are overload protection devices installed to prevent overheating damage to the main power line due to overload. In existing technology, existing overload protectors include a housing, a first conductive plate, a second conductive plate, and a button. The housing has a receiving cavity; the first conductive plate passes through the housing and is used to connect conductive wires; the second conductive plate passes through the housing and is also used to connect conductive wires; the second conductive plate and the first conductive plate are the positive and negative poles of each other. The button is retractably connected to the housing and to the second conductive plate. However, the second conductive plate needs to be disengaged by manually pressing the button, resulting in poor safety of existing overload protectors. Utility Model Content

[0003] The purpose of this utility model is to provide an overload protector. The housing has a receiving cavity; a first conductive sheet passes through the housing and bends towards the receiving cavity; a portion of the first conductive sheet is exposed on the outside of the housing and used to connect conductive wires; a second conductive sheet passes through the housing and bends towards the receiving cavity; a portion of the second conductive sheet is exposed on the outside of the housing and used to connect conductive wires; the second conductive sheet and the first conductive sheet are positive and negative electrodes, respectively; an overload protection plate is housed in the receiving cavity, and the overload protection plate includes a first connecting portion and a second connecting portion; the first connecting portion is electrically connected to the first conductive sheet, and the second connecting portion is connected to the first connecting portion and moves relative to the first connecting portion under overload conditions; the second connecting portion contacts the second conductive sheet in its natural state, or, under overload conditions, the second connecting portion detaches from the second conductive sheet. The overload protection plate achieves the detachment of the second conductive sheet under overload conditions, avoiding detachment due to human intervention, thus realizing overload protection and improving the safety of the overload protector.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an overload protector, comprising:

[0005] The shell has a receiving cavity;

[0006] A first conductive sheet passes through the housing and is bent into the receiving cavity; a portion of the first conductive sheet is exposed on the outside of the housing and is used to connect conductive wires;

[0007] A second conductive sheet passes through the housing and is bent into the receiving cavity; a portion of the second conductive sheet is exposed on the outside of the housing and is used to connect conductive wires; the second conductive sheet and the first conductive sheet are positive and negative electrodes to each other;

[0008] An overload protection plate is housed in the receiving cavity. The overload protection plate includes a first connecting portion and a second connecting portion. The first connecting portion is electrically connected to the first conductive plate, and the second connecting portion is connected to the first connecting portion and moves relative to the first connecting portion in an overload state. The second connecting portion contacts the second conductive plate in a natural state, or the second connecting portion detaches from the second conductive plate in an overload state.

[0009] Optionally, the overload protection sheet is a heat-deformable component, and under overload conditions, it triggers the deformation of the second connecting portion relative to the first connecting portion to detach from the second conductive sheet.

[0010] Optionally, the first connecting part is provided with a through hole, the second connecting part is bent downward from the inner sidewall of the through hole, and there is a bending transition portion between the second connecting part and the first connecting part.

[0011] Optionally, the second connecting portion is suspended relative to the first connecting portion.

[0012] Optionally, the first conductive sheet is provided with a first conductive head and a second conductive head, and the first conductive head and the second conductive head are located within the receiving cavity;

[0013] The first connecting part is provided with a plurality of conductive holes, and the plurality of conductive holes are respectively connected to the first conductive head and the second conductive head.

[0014] Optionally, the first connecting portion is provided with an arc-shaped reinforcing portion, which is located between two adjacent conductive holes and reinforces the first connecting portion.

[0015] Optionally, the bending transition portion is arranged in an arc.

[0016] Optionally, the second conductive sheet is connected to a first contact, which is located in the receiving cavity;

[0017] The second connection part is connected to a second contact. The second contact disengages from the first contact as the second connection part is heated, so that the second conductive sheet and the first conductive sheet are in a de-energized state, thereby realizing the overload protection function of the overload protector.

[0018] Optionally, the overload protector further includes a button, which is retractably connected to the housing;

[0019] When the button is manually pressed, the bottom of the button contacts the overload protection plate, which in turn causes the second connecting part to contact the second conductive plate.

[0020] Optionally, when the overload protector is in an overload state, the second conductive sheet conducts heat to the second connecting part, causing the second connecting part to gradually deform under heat to detach from the second conductive sheet, and the second conductive sheet and the first conductive sheet are in a de-energized state.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This utility model provides an overload protector with a housing having a receiving cavity; a first conductive sheet passes through the housing and bends towards the receiving cavity; a portion of the first conductive sheet is exposed on the outside of the housing and is used to connect conductive wires; a second conductive sheet passes through the housing and bends towards the receiving cavity; a portion of the second conductive sheet is exposed on the outside of the housing and is used to connect conductive wires; the second conductive sheet and the first conductive sheet are positive and negative electrodes respectively; an overload protection plate is housed in the receiving cavity, and the overload protection plate includes a first connecting portion and a second connecting portion; the first connecting portion is electrically connected to the first conductive sheet, and the second connecting portion is connected to the first connecting portion and moves relative to the first connecting portion under overload conditions; the second connecting portion contacts the second conductive sheet in a natural state, or the second connecting portion detaches from the second conductive sheet under overload conditions. The overload protection plate achieves the detachment of the second conductive sheet under overload conditions, avoiding detachment of the second conductive sheet by human intervention, thus realizing overload protection and improving the safety of the overload protector. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0025] Figure 1 A schematic diagram of an overload protector according to an embodiment of this application is shown.

[0026] Figure 2 A cross-sectional view of an overload protector according to an embodiment of this application is shown.

[0027] Figure 3 An exploded view of an overload protector according to an embodiment of this application is shown.

[0028] Figure 4 A schematic diagram of the overload protection plate of the overload protector according to an embodiment of this application is shown.

[0029] Figure 5A schematic diagram of the first conductive sheet of an overload protector according to an embodiment of this application is shown.

[0030] Figure Labels

[0031] 100. Overload protector;

[0032] 10. Shell; 10a. Receiving cavity;

[0033] 20. First conductive sheet; 21. First conductive head; 22. Second conductive head;

[0034] 30. Second conductive sheet; 31. First contact;

[0035] 40. Overload protection plate; 41. First connecting part; 41a. Through hole; 41b. Conductive hole; 411. Arc-shaped reinforcement part; 42. Second connecting part; 421. Second contact; 43. Bending transition part;

[0036] 50. Buttons;

[0037] 60. Spring. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] Please refer to the attached document. Figures 1-5 This application provides an overload protector 100, which is used to prevent the main power line from overheating and being damaged due to overload.

[0040] Please refer to the attached document. Figures 1-5In this embodiment, the overload protector 100 includes a housing 10, a first conductive sheet 20, a second conductive sheet 30, and an overload protection sheet 40. The housing 10 has a receiving cavity 10a. The first conductive sheet 20 passes through the housing 10 and bends towards the receiving cavity 10a. A portion of the first conductive sheet 20 is exposed outside the housing 10 and is used to connect conductive wires. The second conductive sheet 30 passes through the housing 10 and bends towards the receiving cavity 10a. A portion of the second conductive sheet 30 is exposed outside the housing 10 and is used to connect conductive wires. The second conductive sheet 30 and the first conductive sheet 20 are positive and negative electrodes, respectively. The overload protection sheet 40 is received in the receiving cavity 10a. The cavity 10a includes an overload protection plate 40 comprising a first connecting portion 41 and a second connecting portion 42. The first connecting portion 41 is electrically connected to the first conductive plate 20, and the second connecting portion 42 is connected to the first connecting portion 41 and moves relative to the first connecting portion 41 under overload conditions. The second connecting portion 42 contacts the second conductive plate 30 under normal conditions, or the second connecting portion 42 disengages from the second conductive plate 30 under overload conditions. By enabling the second conductive plate 30 to disengage under overload conditions through the overload protection plate 40, the disengagement of the second conductive plate 30 is avoided due to human intervention, thus achieving overload protection and improving the safety of the overload protector 100.

[0041] Please refer to the attached document. Figures 1-5 In this embodiment, the housing 10 serves as a support component of the overload protector 100, supporting the first conductive sheet 20, the second conductive sheet 30, and the overload protection sheet 40. The housing 10 is provided with a receiving cavity 10a, which serves as the internal space of the housing 10.

[0042] The first conductive sheet 20 passes through the housing 10 and bends towards the receiving cavity 10a; a portion of the first conductive sheet 20 is exposed on the outside of the housing 10 and is used to connect the conductive wire; the second conductive sheet 30 passes through the housing 10 and bends towards the receiving cavity 10a; a portion of the second conductive sheet 30 is exposed on the outside of the housing 10 and is used to connect the conductive wire; the second conductive sheet 30 and the first conductive sheet 20 are positive and negative electrodes respectively; so that the first conductive sheet 20 and the second conductive sheet 30 can cooperate to achieve power supply with the device through the conductive wire.

[0043] The overload protection plate 40 is housed in the receiving cavity 10a to fully utilize the space of the receiving cavity 10a, thereby facilitating the internal placement of the overload protection plate 40 within the housing 10. The overload protection plate 40 includes a first connecting portion 41 and a second connecting portion 42. The first connecting portion 41 is electrically connected to the first conductive plate 20, and the second connecting portion 42 is connected to the first connecting portion 41 and moves relative to the first connecting portion 41 under overload conditions to adjust its position relative to the first connecting portion 41. The second connecting portion 42 contacts the second conductive plate 30 in its natural state to indicate that the device is in normal operation. Alternatively, the second connecting portion 42 can detach from the second conductive plate 30 under overload conditions. The overload protection plate 40's ability to detach the second conductive plate 30 under overload conditions avoids manual detachment, thus achieving overload protection and improving the safety of the overload protector 100. Optionally, the overload condition is defined as a current value exceeding a preset rated current value, causing the second connecting portion 42 to generate excessive heat due to the high current.

[0044] Please refer to the attached document. Figures 1-4 In this embodiment, the overload protection plate 40 is a thermally deformable part, and under overload conditions, it triggers the deformation of the second connecting part 42 relative to the first connecting part 41, so that the second connecting part 42 can move upward relative to the first connecting part 41 under the deformation action, so as to detach from the second conductive plate 30. This facilitates the detachment of the second conductive plate 30 by the overload protection plate 40 under overload conditions, avoids the detachment of the second conductive plate 30 by human intervention, realizes overload protection, and improves the safety of the overload protector 100.

[0045] Please refer to the attached document. Figures 1-4 In this embodiment, the first connecting portion 41 is provided with a through hole 41a, and the second connecting portion 42 is bent downward from the inner sidewall of the through hole 41a. A bending transition portion 43 is provided between the second connecting portion 42 and the first connecting portion 41, so that the second connecting portion 42 can move relative to the first connecting portion 41 through the space of the through hole 41a. This allows the second connecting portion 42 to move upward relative to the first connecting portion 41 under deformation, thereby detaching from the second conductive sheet 30. Optionally, the bending transition portion 43 is arranged in an arc shape to facilitate the movement of the second connecting portion 42 along the arc direction.

[0046] Please refer to the attached document. Figures 1-4 In this embodiment of the application, the second connecting part 42 is suspended relative to the first connecting part 41 so that the second connecting part 42 can move up and down along the connection between the second connecting part 42 and the first connecting part 41, so as to achieve the effect of the second connecting part 42 moving relative to the first connecting part 41.

[0047] Please refer to the attached document. Figure 2 and 5In this embodiment, the first conductive sheet 20 is provided with a first conductive head 21 and a second conductive head 22, which are located within the receiving cavity 10a. The first connecting portion 41 is provided with a plurality of conductive holes 41b, which are respectively connected to the first conductive head 21 and the second conductive head 22. This allows the first conductive sheet 20 to be connected to the first connecting portion 41 through the cooperation of the first conductive head 21, the second conductive head 22, and the plurality of conductive holes 41b, ensuring the connection stability of the first conductive sheet 20 relative to the first connecting portion 41. Specifically, there are two conductive holes 41b, which increases the connection strength of the first conductive sheet 20 relative to the first connecting portion 41.

[0048] Please refer to the attached document. Figures 2-4 In this embodiment of the application, the first connecting portion 41 is provided with an arc-shaped reinforcing portion 411. The arc-shaped reinforcing portion 411 is located between two adjacent conductive holes 41b and reinforces the first connecting portion 41. The arc-shaped reinforcing portion 411 strengthens the strength of the first connecting portion 41 and further enhances the connection strength of the first conductive sheet 20 relative to the first connecting portion 41, thus preventing the first conductive sheet 20 from detaching from the first connecting portion 41.

[0049] Please refer to the attached document. Figure 2 In this embodiment, the second conductive sheet 30 is connected to a first contact 31, which is located in the receiving cavity 10a. The first contact 31 is located on the top of the second conductive sheet 30, and the second connecting part 42 is connected to a second contact 421. The second contact 421 disengages from the first contact 31 as the second connecting part 42 is heated, so that the second conductive sheet 30 and the first conductive sheet 20 are in a de-energized state, thereby realizing the overload protection function of the overload protector 100. By adjusting the position of the second contact 421 and disengaging from the first contact 31 through the heating change of the second connecting part 42, the second connecting part 42 is disengaged from the second conductive sheet 30 under overload conditions, avoiding disengagement of the second conductive sheet 30 by human intervention, thus improving the safety of the overload protector 100.

[0050] Please refer to the attached document. Figures 1-3 In this embodiment, the overload protector 100 further includes a button 50, which is retractably connected to the housing 10 to adjust the position of the button 50 relative to the housing 10. When the button 50 is manually pressed, the bottom of the button 50 contacts the overload protection plate 40 and drives the second connecting part 42 to contact the second conductive plate 30, so that the second connecting part 42 abuts against the second conductive plate 30 under the pressure of the button 50. When the second connecting part 42 and the second conductive plate 30 are always in contact, the overload protector 100 is in a non-overload state.

[0051] Please refer to the attached document. Figure 2A spring 60 is provided between the button 50 and the housing 10. The two ends of the spring 60 are connected to the button 50 and the housing 10 respectively, and apply an elastic force to the button 50 so that the button 50 can drive the second connecting part 42 to abut against the second conductive sheet 30 under the elastic force of the spring 60, so that the second contact 421 and the first contact 31 remain in contact.

[0052] Please refer to the attached document. Figure 2 In this embodiment, when the overload protector 100 is in an overload state, the second conductive sheet 30 conducts heat to the second connecting part 42, causing the second connecting part 42 to gradually deform under heat and detach from the second conductive sheet 30. The second conductive sheet 30 and the first conductive sheet 20 are in a de-energized state to achieve overload protection, avoid detachment of the second conductive sheet 30 by human intervention, and improve the safety of the overload protector 100.

[0053] Compared with the prior art, the beneficial effects of this utility model are:

[0054] This utility model provides an overload protector 100. A housing 10 has a receiving cavity 10a. A first conductive sheet 20 passes through the housing 10 and is bent towards the receiving cavity 10a. A portion of the first conductive sheet 20 is exposed on the outside of the housing 10 and is used to connect conductive wires. A second conductive sheet 30 passes through the housing 10 and is bent towards the receiving cavity 10a. A portion of the second conductive sheet 30 is exposed on the outside of the housing 10 and is used to connect conductive wires. The second conductive sheet 30 and the first conductive sheet 20 are positive and negative electrodes, respectively. An overload protection sheet 40 is received in the receiving cavity 10a. The overload protection sheet 40 includes a first... A first connecting part 41 and a second connecting part 42 are provided. The first connecting part 41 is electrically connected to the first conductive sheet 20, and the second connecting part 42 is connected to the first connecting part 41 and moves relative to the first connecting part 41 under overload conditions. The second connecting part 42 contacts the second conductive sheet 30 under normal conditions, or the second connecting part 42 is disconnected from the second conductive sheet 30 under overload conditions. The second conductive sheet 30 is disconnected under overload conditions by the overload protection sheet 40, which avoids the second conductive sheet 30 being disconnected by human intervention, thus achieving overload protection and improving the safety of the overload protector 100.

[0055] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0056] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0057] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An overload protector characterized by, include: The shell has a receiving cavity; A first conductive sheet passes through the housing and is bent into the receiving cavity; a portion of the first conductive sheet is exposed on the outside of the housing and is used to connect conductive wires; A second conductive sheet passes through the housing and is bent into the receiving cavity; a portion of the second conductive sheet is exposed on the outside of the housing and is used to connect conductive wires; the second conductive sheet and the first conductive sheet are positive and negative electrodes to each other; An overload protection plate is housed in the receiving cavity. The overload protection plate includes a first connecting portion and a second connecting portion. The first connecting portion is electrically connected to the first conductive plate, and the second connecting portion is connected to the first connecting portion and moves relative to the first connecting portion in an overload state. The second connecting portion contacts the second conductive plate in a natural state, or the second connecting portion detaches from the second conductive plate in an overload state.

2. The overload protector of claim 1, wherein, The overload protection sheet is a heat-deformable part, and under overload conditions, it triggers the deformation of the second connecting part relative to the first connecting part to detach from the second conductive sheet.

3. The overload protector of claim 2, wherein, The first connecting part is provided with a through hole, and the second connecting part is bent downward from the inner sidewall of the through hole, with a bending transition portion between the second connecting part and the first connecting part.

4. The overload protector of claim 3, wherein, The second connecting part is suspended relative to the first connecting part.

5. The overload protector of claim 3, wherein, The first conductive sheet is provided with a first conductive head and a second conductive head, and the first conductive head and the second conductive head are located within the receiving cavity; The first connecting part is provided with a plurality of conductive holes, and the plurality of conductive holes are respectively connected to the first conductive head and the second conductive head.

6. The overload protector of claim 5, wherein, The first connecting portion is provided with an arc-shaped reinforcing portion, which is located between two adjacent conductive holes and reinforces the first connecting portion.

7. The overload protector of claim 3, wherein, The bending transition section is arranged in an arc.

8. The overload protector of claim 4, wherein, The second conductive sheet is connected to a first contact, which is located in the receiving cavity; The second connection part is connected to a second contact. The second contact disengages from the first contact as the second connection part is heated, so that the second conductive sheet and the first conductive sheet are in a de-energized state, thereby realizing the overload protection function of the overload protector.

9. The overload protector of claim 1, wherein, The overload protector also includes a button, which is retractably connected to the housing; When the button is manually pressed, the bottom of the button contacts the overload protection plate, which in turn causes the second connecting part to contact the second conductive plate.

10. The overload protector of claim 9, wherein, When the overload protector is in an overload state, the second conductive sheet conducts heat to the second connecting part, causing the second connecting part to gradually deform under heat and detach from the second conductive sheet, and the second conductive sheet and the first conductive sheet are in a de-energized state.

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