Circuit breaker
By using a button structure of flexible and hard insulating materials in the circuit breaker, the problems of degraded performance of traditional circuit breakers and easy damage to the outdoors are solved, the stability and service life of the circuit breaker are improved, and safety and reliability are enhanced.
Patent Information
- Application Number
- CN202421138760.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The conductive properties of the button switches of traditional circuit breakers decrease as they increase their usage time, and outdoor use is susceptible to damage to ultraviolet rays and sharp objects, which affects the stability and reliability of the circuit breaker.
A circuit breaker is designed, using a button structure of flexible and hard insulating materials. Through the cooperation of the first and second key bodies, the use of conductive parts is reduced, the insulation performance is improved, and wear is prevented through hard insulating materials. Enhanced durability for outdoor use.
It improves the stability and service life of the circuit breaker, reduces the risk of degraded performance of conductive parts, and enhances the safety and reliability of the product.
Smart Images
Figure CN222365534U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switches, in particular to a circuit breaker. Background Art
[0002] At present, in order to protect the circuit from leakage current and overcurrent (overload and short circuit), the circuit breaker is usually used to start and break the circuit and automatically cut off the fault circuit to protect the equipment and prevent fire risks. The key switch of the traditional circuit breaker is usually equipped with a conductive part connected to the circuit breaker on the circuit breaker circuit board. As the use time increases, the conductive performance of the conductive part will be affected, thereby affecting the normal use of the circuit breaker. In addition, when the circuit breaker is used outdoors, its key switch is easily damaged by ultraviolet rays and sharp objects, which reduces the reliability of the key switch and affects the stability of the circuit breaker.
[0003] The above information disclosed in the Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may include information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention
[0004] The utility model provides a circuit breaker, which can improve the stability of the circuit breaker buttons.
[0005] In a first aspect of the present disclosure, a circuit breaker is provided, the circuit breaker comprising:
[0006] The circuit breaker body comprises a housing and a circuit board located in the housing, the circuit board is provided with a circuit breaker switch, and the housing is also provided with a through hole corresponding to the circuit breaker switch;
[0007] A key, comprising a first key body and a second key body that cooperate with each other, the first key body comprising a first protrusion and a second protrusion that are connected to each other, the diameter of the first protrusion is larger than the diameter of the second protrusion, the second key body is provided with a groove that cooperates with the second protrusion, and a third protrusion is provided at one end of the second protrusion close to the circuit board; the position of the second key body corresponds to the position of the through hole, when the second key body is pressed, the third protrusion contacts the circuit breaker, and the second key body is exposed at the end surface of the shell.
[0008] In an exemplary embodiment of the present disclosure, a diameter of the second key body is the same as a diameter of the through hole.
[0009] In an exemplary embodiment of the present disclosure, the first key body is made of a flexible insulating material, and the second key body is made of a hard insulating material.
[0010] In an exemplary embodiment of the present disclosure, the flexible insulating material is rubber, and the hard insulating material is resin.
[0011] In an exemplary embodiment of the present disclosure, the button is a cylindrical structure.
[0012] In an exemplary embodiment of the present disclosure, the first key body is further provided with a fourth protrusion, and the fourth protrusion is arranged around the first protrusion and has a distance between the fourth protrusion and the first protrusion.
[0013] In an exemplary embodiment of the present disclosure, the fourth protrusion is a circular ring structure.
[0014] In an exemplary embodiment of the present disclosure, a first frustum, a second frustum and a third frustum are arranged around the through hole with diameters increasing in sequence and are all located in the shell, and the first frustum, the second frustum and the third frustum are coaxial.
[0015] In an exemplary embodiment of the present disclosure, the second key body is provided with a fifth protrusion, and the diameter of the fifth protrusion is larger than the diameter of the first truncated cone so as to engage with the first truncated cone.
[0016] In an exemplary embodiment of the present disclosure, a diameter of the fourth protrusion is greater than a diameter of the third cone.
[0017] Beneficial effects:
[0018] In the utility model, the circuit breaker includes a circuit breaker body and a button. A circuit board is arranged in the shell of the circuit breaker body, a circuit breaker switch is arranged on the circuit board, and the button is provided with a first key body and a second key body connected to each other, the first key body can be inserted into the second key body, and the first key body is provided with a third protrusion corresponding to the circuit breaker switch. When the second key body is pressed, the third protrusion can contact the circuit breaker switch and press the circuit breaker switch to achieve (disconnection and) conduction of the circuit breaker switch. In addition, the button itself is composed of two insulators, which increases its insulation performance and improves the safety of the product. Moreover, the second key body uses a hard insulating material, which can prevent the key body from being worn due to long-term outdoor use, and can increase the service life of the circuit breaker. Moreover, the second key body uses a hard insulating material, which can prevent the key body from being worn due to long-term use, and can increase the service life of the circuit breaker, thereby improving the stability of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 It is a top view of the interior of a shell according to an embodiment of the present disclosure.
[0021] Figure 2 yes Figure 1 A cross-sectional view of the interior of a housing is shown.
[0022] Figure 3 It is a structural schematic diagram of a shell end surface according to an embodiment of the present disclosure.
[0023] Figure 4 It is a schematic structural diagram of a first key body according to an embodiment of the present disclosure.
[0024] Figure 5 It is a cross-sectional view of a first key body and a second key body cooperating with each other according to an embodiment of the present disclosure.
[0025] Description of reference numerals:
[0026] 100, housing; 110, circuit board; 120, circuit breaker; 130, through hole; 140, button; 150, first key body; 160, second key body; 170, first protrusion; 180, second protrusion; 190, third protrusion; 200, fourth protrusion; 210, fifth protrusion; 220, first cone; 230, second cone; 240, third cone. DETAILED DESCRIPTION
[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and the concepts of the example embodiments are fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure.
[0028] The described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the main technical ideas of the present disclosure.
[0029] When a structure is “on” another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is “directly” disposed on the other structure, or that the structure is “indirectly” disposed on the other structure via another structure.
[0030] The terms "a", "an", "the" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open-ended inclusive meaning and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. The terms "first" and "second" etc. are used only as labels and are not intended to limit the quantity of their objects.
[0031] At present, in order to protect the circuit from leakage current and overcurrent (overload and short circuit), the circuit breaker is usually used to start and break the circuit and automatically cut off the fault circuit to protect the equipment and prevent fire risks. The key switch of the traditional circuit breaker is usually equipped with a conductive part connected to the circuit breaker switch on the circuit breaker circuit board. As the use time increases, the conductive performance of the conductive part will be affected, thereby affecting the normal use of the circuit breaker. In addition, when the circuit breaker is used outdoors, its keys are easily damaged by ultraviolet rays and sharp objects, which reduces the reliability of the keys and affects the stability of the circuit breaker.
[0032] In an embodiment of the present disclosure, a circuit breaker is provided, such as Figure 1-Figure 5 As shown, the circuit breaker may include a circuit breaker body and a button 140. The circuit breaker body may include a housing 100 and a circuit board 110 located in the housing 100. The circuit board 110 is provided with a circuit breaker 120, and the housing 100 is also provided with a through hole 130 corresponding to the circuit breaker 120. The button 140 may include a first key body 150 and a second key body 160 that cooperate with each other, the first key body 150 includes a first protrusion 170 and a second protrusion 180 that are connected to each other, the diameter of the first protrusion 170 is larger than the diameter of the second protrusion 180, the second key body 160 is provided with a groove that cooperates with the second protrusion 180, and a third protrusion 190 is provided at one end of the second protrusion 180 close to the circuit board 110; the position of the second key body 160 corresponds to the position of the through hole 130, when the second key body 160 is pressed, the third protrusion 190 contacts the circuit breaker 120, and the second key body 160 is exposed on the end surface of the shell 100.
[0033] In the present disclosure, the circuit breaker includes a circuit breaker body and a button 140. A circuit board 110 is disposed in the housing 100 of the circuit breaker body, a circuit breaker 120 is disposed on the circuit board 110, and the button 140 is provided with a first key body 150 and a second key body 160 connected to each other, the second key body 160 can be inserted into the first key body 150, and the first key body 150 is provided with a third protrusion 190 corresponding to the circuit breaker 120. When the second key body 160 is pressed, the third protrusion 190 can contact the circuit breaker 120 and press the circuit breaker 120 to achieve the conduction of the circuit breaker 120. Since the button 140 is not provided with a conductive member, the circuit breaker 120 is pressed only by the button 140 itself to achieve the conduction of the circuit breaker 120, so that the risk of the performance of the conductive member being reduced as the use time increases can be reduced, thereby improving the stability of the circuit breaker.
[0034] The following is a detailed description of the various components of the circuit breaker provided in the embodiment of the present disclosure in conjunction with the accompanying drawings:
[0035] In an embodiment of the present disclosure, the diameter of the second key body 160 is the same as the diameter of the through hole 130 , so that the second key body 160 can pass through the through hole 130 and be exposed on the end surface of the circuit breaker housing 100 , so as to facilitate pressing by a user.
[0036] Optionally, the first key body 150 is a flexible insulating material, and the second key body 160 is a hard insulating material. Since the first key body 150 is a flexible insulating material, when the user presses it, the first key body 150 can contact the circuit breaker 120 through elastic deformation, and when the pressing is finished, the first key body 150 returns to the initial position through elastic recovery to disconnect the circuit breaker 120. When the circuit breaker is used outdoors, since the second key body 160 is a hard insulating material, the second key body 160 is not easily affected by sharp objects and has a strong wear resistance, which can improve the reliability of the circuit breaker.
[0037] Since the first key body 150 and the second key body 160 are both made of insulating materials, the insulation performance of the key 140 is increased and the safety of the product is improved. Moreover, the second key body 160 uses a hard insulating material to prevent the key body from being worn out due to long-term outdoor use, thereby increasing the service life of the circuit breaker. Moreover, the second key body 160 uses a hard insulating material to prevent the key body from being worn out due to long-term use, thereby increasing the service life of the circuit breaker. Therefore, the risk of the performance of the conductive parts being reduced as the use time increases can be reduced, thereby improving the stability of the circuit breaker.
[0038] For example, the flexible insulating material may be rubber, polyvinyl alcohol, polyester, polyimide, etc., and the rigid insulating material may be resin, such as polyoxymethylene resin, polytetramethylene terephthalate, etc. The present disclosure does not make any special limitation here.
[0039] Optionally, the button 140 is a cylindrical structure.
[0040] In an embodiment of the present disclosure, the first key body 150 is further provided with a fourth protrusion 200 , and the fourth protrusion 200 is arranged around the first protrusion 170 and has a distance between the fourth protrusion 200 and the first protrusion 170 .
[0041] Optionally, a first truncated cone 220, a second truncated cone 230, and a third truncated cone 240 with increasing diameters are disposed on the through hole 130, and are all located in the housing 100, and the first truncated cone 220, the second truncated cone 230, and the third truncated cone 240 are coaxial. It should be noted that the arrangement of the first truncated cone 220, the second truncated cone 230, and the third truncated cone 240 can enable the first key body 150 and the second key body 160 in the present disclosure to be engaged in the housing 100 and not easily moved.
[0042] For example, the second key body is provided with a fifth protrusion 210, and the diameter of the fifth protrusion 210 is larger than the diameter of the first cone 220 so as to engage with the first cone 220. In this way, the second key body 160 is engaged into the shell 100, and contact with the circuit breaker can be achieved by pressing the second key body 160.
[0043] For example, the fourth protrusion 200 is surrounded by the first protrusion 170 and has a distance between it and the first protrusion 170, and the diameter of the fourth protrusion 200 is larger than the diameter of the third cone 240, so that the third cone 240 can be engaged in the gap formed by the first protrusion 170 and the fourth protrusion 200, thereby fixing the second key body 160.
[0044] In one embodiment of the present disclosure, the number of buttons 140 can be two, one button 140 serves as a test function, and the other button 140 serves as a reset function. The circuit breaker 120 can also include a test switch and a reset switch. Specifically, when one of the buttons 140 serves as a test function, its circuit breaker 120 serves as a test switch. When the test switch is turned on, a simulated leakage current will be generated on the circuit board 110. The zero-sequence current transformer senses this current, which is then amplified by the integrated circuit to cause the thyristor to operate, so that the coil loses voltage and the test switch is disconnected, thereby playing a role in equipment leakage protection. When the other button 140 serves as a reset function, its circuit breaker 120 serves as a reset switch. When the reset switch is turned on, the two transistors on the circuit board 110 are turned on, the coil is energized, and the reset switch is quickly closed. At this time, the two transistors are cut off, and the closure of the reset switch is maintained by the coil and the transistor to achieve the reset function.
[0045] It should be understood that the present disclosure does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The present disclosure can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present disclosure. It should be understood that the present disclosure disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for implementing the present disclosure and will enable those skilled in the art to utilize the present disclosure.
Claims
1. A circuit breaker, characterized in that: The circuit breaker comprises: The circuit breaker body comprises a housing and a circuit board located in the housing, the circuit board is provided with a circuit breaker switch, and the housing is also provided with a through hole corresponding to the circuit breaker switch; A key, comprising a first key body and a second key body that cooperate with each other, the first key body comprising a first protrusion and a second protrusion that are connected to each other, the diameter of the first protrusion is larger than the diameter of the second protrusion, the second key body is provided with a groove that cooperates with the second protrusion, and a third protrusion is provided at one end of the second protrusion close to the circuit board; the position of the second key body corresponds to the position of the through hole, when the second key body is pressed, the third protrusion contacts the circuit breaker, and the second key body is exposed at the end surface of the shell.
2. The circuit breaker according to claim 1, characterized in that: The diameter of the second key body is the same as the diameter of the through hole.
3. The circuit breaker according to claim 1, characterized in that: The first key body is made of flexible insulating material, and the second key body is made of rigid insulating material.
4. The circuit breaker according to claim 3, characterized in that: The flexible insulating material is rubber, and the rigid insulating material is resin.
5. The circuit breaker according to claim 1, characterized in that: The button is a cylindrical structure.
6. The circuit breaker according to claim 1, characterized in that: The first key body is further provided with a fourth protrusion, which is arranged around the first protrusion and has a distance between the fourth protrusion and the first protrusion.
7. The circuit breaker according to claim 6, characterized in that: The fourth protrusion is a circular ring structure.
8. The circuit breaker according to claim 6, characterized in that: A first frustum, a second frustum and a third frustum are arranged around the through hole with diameters increasing in sequence and are all located in the shell. The first frustum, the second frustum and the third frustum are coaxial.
9. The circuit breaker according to claim 8, characterized in that The second key body is provided with a fifth protrusion, and the diameter of the fifth protrusion is greater than the diameter of the first truncated cone so as to be engaged with the first truncated cone.
10. The circuit breaker according to claim 8, characterized in that The diameter of the fourth protrusion is greater than the diameter of the third cone.