circuit breaker

Abstract

The application provides a kind of circuit breaker, it is related to low-voltage electrical technology field.The circuit breaker includes shell, movable contact assembly, second indicating structure and third indicating structure.The movable contact assembly includes first trigger structure and second trigger structure, and first indicating structure is arranged between first trigger structure and second trigger structure, when the circuit breaker is in the state of opening, movable contact assembly is in the first position, and first indicating structure is in the position corresponding to indicating window.When the circuit breaker is in the state of closing, first trigger structure drives second indicating structure to be in the position corresponding to indicating window.When the circuit breaker is in the state of failure, movable contact assembly is in the third position, and second trigger structure drives third indicating structure to be in the position corresponding to indicating window.According to the circuit breaker provided in the application, the operator can avoid observing the state of the circuit breaker indicated by the indicating member from multiple positions, simplify the way for the operator to know the state of the circuit breaker, and improve the accuracy of identifying the state of the circuit breaker.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more particularly to a circuit breaker. Background Technology

[0002] A circuit breaker is an electrical component that protects a circuit. When an overload, short circuit, or other fault occurs in a circuit, the circuit breaker can be switched to the open position to disconnect the circuit and prevent the fault from escalating.

[0003] Based on the existing circuit breaker structure, it is possible to observe whether the circuit breaker is in the closed or open state from the handle. The circuit breaker also includes an indicating structure, allowing operators to understand the reason why the circuit breaker is in the open state through the indicating structure.

[0004] However, because the indicator structure and the handle are located in different positions on the circuit breaker, it is inconvenient for operators to observe the status of the circuit breaker, which may lead to misidentification. Utility Model Content

[0005] This application provides a circuit breaker. According to the circuit breaker provided by this application, operators can avoid observing the circuit breaker's status indicated by indicators from multiple locations, simplifying the way operators know the circuit breaker's status and improving the accuracy of circuit breaker status identification.

[0006] In a first aspect, this application provides a circuit breaker. The circuit breaker includes a housing, a moving contact assembly, a second indicating structure, and a third indicating structure. The moving contact assembly is rotatably mounted to the housing and includes a first trigger structure and a second trigger structure spaced apart. A first indicating structure is provided between the first and second trigger structures. When the circuit breaker is in the open state, the moving contact assembly is in a first position, and at least a portion of the first indicating structure is in the position corresponding to the indicating window. The second indicating structure is slidably mounted to the housing. During the process of switching the circuit breaker from the open state to the closed state, the moving contact assembly rotates from the first position to the second position, and the first trigger structure drives the second indicating structure to the position corresponding to the indicating window. The third indicating structure is slidably mounted to the housing. When the circuit breaker is in a fault state, the moving contact assembly is in a third position, and the second trigger structure drives the third indicating structure to the position corresponding to the indicating window.

[0007] In this application example, the housing is provided with an indicator window, through which the operator can observe the position of different indicators within the housing. When the first indicator is observed through the indicator window, it is determined that the circuit breaker is in the open state. When the second indicator is observed through the indicator window, it is determined that the circuit breaker is in the closed state. When the third indicator is observed through the indicator window, it is determined that the circuit breaker is in the tripped state, thus identifying an overload or short-circuit fault in the circuit and allowing for timely handling of the fault. According to the circuit breaker provided in this application, the positions of different indicators within the housing can be observed through the same indicator window, thereby determining whether the circuit breaker is in the open, closed, or tripped state. This avoids the operator needing to observe the circuit breaker's state from multiple locations, simplifying the operator's method of determining the circuit breaker's state and improving the accuracy of state identification.

[0008] In some possible implementations, the moving contact assembly is further provided with a reset structure, which is located between the first trigger structure and the second trigger structure. At least a portion of the first indicator structure is located on the side of the reset structure away from the first trigger structure. During the process of the circuit breaker switching from the closed state to the open state, the moving contact assembly rotates from the second position to the first position, and the reset structure drives the second indicator structure to move along a position away from the second trigger structure. At least a portion of the first indicator structure is located at the position corresponding to the indicator window.

[0009] In this example, during the process of switching the circuit breaker from the closed state to the open state, the first indicating structure rotates with the moving contact assembly and is positioned corresponding to the indicating window. Since the moving contact assembly is equipped with a reset structure, during the rotation of the moving contact assembly, the reset structure applies a force to the second indicating structure, causing the second indicating structure to move away from the indicating window. This prevents the second indicating structure from obscuring the first indicating structure, thus avoiding situations where the operator misidentifies the circuit breaker's state.

[0010] In some possible implementations, the second indicating structure includes a second display section connected to a contact protrusion. The second display section is slidable to a position corresponding to the indicating window. The contact protrusion is located on the side of the second display section opposite to the indicating window. During the process of switching the circuit breaker from the open state to the closed state, the first triggering structure pushes against the contact protrusion, causing the second display section to move to the position corresponding to the indicating window.

[0011] In this example, during the switching process of the circuit breaker from the open state to the closed state, the first triggering structure located on the moving contact assembly contacts the abutment protrusion, applying force to the abutment protrusion. Since the abutment protrusion is connected to the second display unit, it can drive the second display unit to the position corresponding to the indicator window. By providing the abutment protrusion, the distance between the second indicator structure and the first triggering structure can be reduced, thereby improving the reliability of the first triggering structure driving the second indicator structure to move.

[0012] In some possible implementations, the second indicating structure also includes a limiting protrusion. The limiting protrusion is spaced apart from the abutting protrusion, and during the process of switching the circuit breaker from the open state to the closed state, the limiting protrusion is used to limit the displacement of the second display unit relative to the indicating window.

[0013] In this example, the second indicating structure is provided with a limiting protrusion. During the process of switching the circuit breaker from the open state to the closed state, the limiting protrusion can contact the internal structure of the circuit breaker to limit the displacement of the second indicating structure relative to the indicating window, so that the second indicating structure remains in the position corresponding to the indicating window. This avoids the situation where, when the circuit breaker is in the closed state, the second indicating structure moves excessively and leaves the position corresponding to the indicating window, which could lead to the operator misidentifying the circuit breaker status.

[0014] In some possible implementations, the limiting protrusion includes a first limiting protrusion, which is located on the side of the second display unit away from the indicator window, and is located on the side of the abutment protrusion away from the second trigger structure. The first limiting protrusion can be engaged with the side of the first trigger structure away from the second trigger structure.

[0015] In this example, the first limiting protrusion is located on the side of the second display unit away from the indicator window, and also on the side of the abutment protrusion away from the second trigger structure. During the process of the circuit breaker switching from the open state to the closed state, the first trigger structure applies a force to the second indicator structure, causing the second indicator structure to move closer to the indicator window. When the second indicator structure reaches the position corresponding to the indicator window, if the second indicator structure continues to move towards the second trigger structure, the first limiting protrusion can engage with the side of the first trigger structure away from the second trigger structure. This allows the first trigger structure to apply a force away from the second trigger structure to the first limiting protrusion, preventing the second indicator structure from moving further towards the second trigger structure and maintaining the second indicator structure at the position corresponding to the indicator window. This avoids the situation where, when the circuit breaker is in the closed state, the second indicator structure moves excessively, causing it to leave the position corresponding to the indicator window, which could lead to the operator misidentifying the circuit breaker status.

[0016] In some possible implementations, the first triggering structure is provided with a clearance part, which is used to avoid the first limit protrusion during the process of switching the circuit breaker from the open state to the closed state.

[0017] In this application example, by setting an avoidance part in the first trigger structure, during the process of switching the circuit breaker from the open state to the closed state, the distance between the first trigger structure and the first limit protrusion can be made larger, thereby reducing the possibility of interference between the first trigger structure and the first limit protrusion during the rotation of the moving contact assembly, and ensuring the reliability of the first trigger structure driving the second indicator structure to the corresponding position of the indicator window.

[0018] In some possible implementations, the limiting protrusion includes a second limiting protrusion, which is located on the side of the second display unit near the indicator window and on the side of the abutment protrusion near the second trigger structure. The second limiting protrusion can abut against the housing or the second indicator structure.

[0019] In this example, the second limiting protrusion is located on the side of the second indicating structure near the indicating window. During the process of switching the circuit breaker from the open state to the closed state, the first triggering structure applies a force to the second indicating structure, causing the second indicating structure to move closer to the indicating window. When the second indicating structure reaches the position corresponding to the indicating window, since the second limiting protrusion is located on the side of the abutment protrusion near the second triggering structure, if the second indicating structure continues to move towards the second triggering structure, the second limiting protrusion can engage with the circuit breaker housing or the second indicating structure. The housing or the second indicating structure applies a force away from the second triggering structure to the second limiting protrusion, thus preventing the second indicating structure from moving further towards the second triggering structure. This keeps the second indicating structure at the position corresponding to the indicating window, preventing the second indicating structure from moving excessively when the circuit breaker is in the closed state, causing it to leave the position corresponding to the indicating window and leading to the operator misidentifying the circuit breaker status.

[0020] In some possible implementations, the first indicating structure has a first identifier; when the first identifier is in the position corresponding to the indicating window, it indicates that the circuit breaker is in the open state. The second indicating structure has a second identifier, which is different from the first identifier; when the second identifier is in the position corresponding to the indicating window, it indicates that the circuit breaker is in the closed state. The third indicating structure has a third identifier, which is different from both the first and second identifiers; when the third identifier is in the position corresponding to the indicating window, it indicates that the circuit breaker is in a fault state.

[0021] In this application example, a first identifier is set in the first indicator structure, a second identifier is set in the second indicator structure, and a third identifier is set in the third indicator structure. Since the first identifier, the second identifier, and the third identifier are all different, when the corresponding identifier is in the position corresponding to the indicator window, the operator can quickly and accurately determine the indicator in the corresponding position of the indicator window based on the identifier, and thus determine the state of the circuit breaker.

[0022] In some possible implementations, the first triggering structure is a first hook structure, which contacts the abutting protrusion.

[0023] In this application example, the first hook structure is set to contact the abutting protrusion surface, which can make the contact area between the first hook structure and the abutting protrusion larger, thereby ensuring the reliability of the contact between the first hook structure and the abutting protrusion.

[0024] In some possible implementations, the second trigger structure is a second hook structure, which contacts the surface of the third indicator structure.

[0025] In this application example, the second hook structure is made to contact the third indicator structure surface, which can make the contact area between the second hook structure and the third indicator structure larger, thereby ensuring the contact reliability between the second hook structure and the third indicator structure. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a circuit breaker provided as an example of this application.

[0027] Figure 2 This is a schematic diagram of a circuit breaker in the open state, provided as an example of this application.

[0028] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0029] Figure 4 This is a schematic diagram of a circuit breaker in the closed state, provided as an example of this application.

[0030] Figure 5 for Figure 4 A magnified view of a portion of point B in the middle.

[0031] Figure 6 This is a schematic diagram of a circuit breaker in a tripped state, provided as an example of this application.

[0032] Figure 7 for Figure 6 A magnified view of a portion of point C in the middle.

[0033] Figure 8This is a schematic diagram of the structure of a moving contact assembly provided as an example of this application.

[0034] Figure 9 A schematic diagram of the structure of a second indicator provided as an example of this application.

[0035] Explanation of reference numerals in the attached figures: 100. Circuit breaker; 110. Housing; 111. Indicator window; 120. Moving contact assembly; 121. First trigger structure; 122. Second trigger structure; 123. Reset structure; 124. First indicator structure; 125. Contact support; 126. Trip lever; 127. Moving contact body; 130. Second indicator structure; 131. Second display unit; 132. Abutment protrusion; 133. Limiting protrusion; 1331. First limiting protrusion; 140. Third indicator structure; 150. Operating handle. Detailed Implementation

[0036] To make the purpose, technical solutions, and advantages of the examples in this application clearer, the technical solutions in the examples of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only a part of the examples in this application, not all of them. Based on the examples in this application, all other examples obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terms used herein in the description of the application are for the purpose of describing particular examples only and are not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the description, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0038] In this document, the term "example" means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of this application. The appearance of the phrase "example" in various places in the specification does not necessarily refer to the same example, nor is it a separate or alternative example mutually exclusive with other examples. It will be explicitly and implicitly understood by those skilled in the art that the examples described herein can be combined with other examples.

[0039] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0040] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the circuit breaker in this application.

[0041] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0042] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0043] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] To enable those skilled in the art to better understand the present application, the circuit breaker provided in the example of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0045] For example, this application provides a circuit breaker. Figure 1 This application provides a schematic diagram of the structure of a circuit breaker as an example. Figure 2 This application provides a schematic diagram illustrating the structure of a circuit breaker in the open state. Figure 3 for Figure 2 A magnified view of a portion of point A in the middle. Figure 4 This application provides a schematic diagram illustrating the structure of a circuit breaker in the open state. Figure 5 for Figure 4 A magnified view of a portion of point B in the middle. Figure 6 This application provides a schematic diagram illustrating the structure of a circuit breaker in the open state. Figure 7 for Figure 6 A magnified view of a portion of point C in the middle.

[0046] Please refer to Figures 1-7 The circuit breaker 100 includes a housing 110, a moving contact assembly 120, a second indicating structure 130, and a third indicating structure 140.

[0047] The housing 110 is provided with an indicator window 111. A moving contact assembly 120 is rotatably mounted to the housing 110. The moving contact assembly 120 includes a first trigger structure 121 and a second trigger structure 122 spaced apart. A first indicator structure 124 is provided between the first trigger structure 121 and the second trigger structure 122. When the circuit breaker 100 is in the open state, the moving contact assembly 120 is in a first position, and at least part of the first indicator structure 124 is in the position corresponding to the indicator window 111. A second indicator structure 130 is slidably mounted to the housing 110. During the process of the circuit breaker 100 switching from the open state to the closed state, the moving contact assembly 120 rotates from the first position to the second position, and the first trigger structure 121 drives the second indicator structure 130 to the position corresponding to the indicator window 111. The third indicating structure 140 is slidably mounted to the housing 110. When the circuit breaker 100 is in a fault state, the moving contact assembly 120 is in the third position, and the second triggering structure 122 drives the third indicating structure 140 to the position corresponding to the indicating window 111.

[0048] The housing 110 can be made of insulating materials, such as bakelite, nylon, polyvinyl chloride, polycarbonate (also known as PC plastic), etc. The housing 110 made of insulating materials can reduce the possibility of current inside the housing 110 being conducted to the outside of the housing 110, thus ensuring the safety of the circuit breaker 100 in use.

[0049] The indicator window 111 can be a rectangular hole, a circular hole, an elliptical hole, or other regular-shaped hole. The indicator window 111 can also be an irregular-shaped hole, as long as it ensures that the operator can observe the position of the first indicator, the second indicator, and the third indicator through the indicator window 111.

[0050] A protective plate may be provided at the indicator window 111. The protective plate may be a transparent plate structure, as long as it does not affect the operator's observation of the position of different indicators inside the housing 110 from the indicator window 111.

[0051] By installing a protective plate at the indicator window 111, the possibility of foreign objects such as water and dust from the external environment entering the circuit breaker 100 through the indicator window 111 can be reduced, thus ensuring the reliability of the circuit breaker 100.

[0052] Figure 8 A schematic diagram of a moving contact assembly provided as an example in this application is shown below. Figure 2 , Figure 3 as well as Figure 8The moving contact assembly 120 includes a cooperating contact support 125, a moving contact body 127, and a trip latch 126. The contact support 125 is rotatably mounted to the housing 110. The cooperation method of the contact support 125, the moving contact body 127, and the trip latch 126 is similar to that of the contact support, the moving contact body, and the trip latch in the prior art, and will not be described in detail here. In this example, the first trigger structure 121 is disposed on the contact support 125, and the second trigger structure 122 is disposed on the trip latch 126.

[0053] The moving contact assembly 120 is rotatably mounted to the housing 110 via a hole-shaft engagement. The first trigger structure 121 and the second trigger structure 122 can be bosses, protrusions, hook-like structures, or other structures provided on the moving contact assembly 120 that can drive the corresponding indicator to move. This application example does not impose specific limitations on this.

[0054] Please refer to Figure 2 and Figure 3 When the circuit breaker 100 is in the open state, the moving contact assembly 120 is in the first position, and the first indicating structure 124 is located at the position corresponding to the indicating window 111. That is, the operator can observe the first indicating structure 124 through the indicating window 111, and thus determine that the circuit breaker 100 is in the open state based on the position of the first indicating structure 124. At this time, the second indicating structure 130 is located on the side of the indicating window 111 closer to the first triggering structure 121, and the third indicating structure 140 is located on the side of the indicating window 111 closer to the second triggering structure 122.

[0055] The first indicator structure 124 can be integrally disposed with the moving contact assembly 120, or the first indicator structure 124 can be a structural component installed on the moving contact assembly 120. This application example does not impose specific limitations on this.

[0056] During the process of switching circuit breaker 100 from the open state to the closed state, such as Figures 2-4As shown, the operating mechanism drives the moving contact assembly 120 to rotate clockwise, thereby bringing the moving contact assembly 120 into contact with the stationary contact, and putting the circuit breaker 100 in the closed state. During the rotation of the moving contact assembly 120, the first trigger structure 121 located on the moving contact assembly 120 rotates close to the reset structure 123. During the rotation of the first trigger structure 121, the first trigger structure 121 contacts the second indicating structure 130 and applies a force to the second indicating structure 130, causing the second indicating structure 130 to move closer to the indicating window 111 until the circuit breaker 100 is in the closed state. At this time, the operating mechanism is in the second position, and at least part of the second indicating structure 130 is in the position corresponding to the indicating window 111. That is, the operator can observe the second indicating structure 130 through the indicating window 111, and thus determine that the circuit breaker 100 is in the closed state based on the position of the second indicating structure 130.

[0057] The first trigger structure 121 can directly contact the plate-shaped second indicator structure 130. The second indicator structure 130 can also be provided with a protrusion, and the first trigger structure 121 contacts the protrusion on the second indicator structure 130.

[0058] During the process of switching the circuit breaker 100 from the closed state to the open state, the second indicating structure 130 can leave the position corresponding to the indicating window 111 under the action of the structural component provided on the moving contact assembly 120. Alternatively, a connecting structure is provided between the second indicating structure 130 and the operating handle 150, so that the rotation of the operating handle 150 can drive the second indicating structure 130 to leave the position corresponding to the indicating window 111 through the connecting structure.

[0059] The inner wall of the housing 110 is provided with a sliding groove, and part of the second indicator structure 130 extends into the sliding groove and can slide within the sliding groove.

[0060] If overload, short circuit, or other phenomena occur in the circuit, please refer to... Figure 6 and Figure 7 The magnetic deactivation mechanism in the circuit breaker 100 drives the operating mechanism to operate, which in turn applies a force to the moving contact assembly 120, causing the moving contact assembly 120 to separate from the stationary contact assembly. Regarding the operation of the moving contact assembly in the circuit breaker 100 when overload or short circuit occurs, the process is similar to the rotation process of the moving contact assembly 120 in the prior art, and will not be described in detail here. The second triggering structure 122 of the trip latch 126 applies a force to the third indicating structure 140 as the trip latch 126 operates, causing the third indicating structure 140 to move to the position corresponding to the indicating window 111. That is, the operator can observe the third indicating structure 140 through the indicating window 111 and determine whether the circuit breaker 100 is in the closed state based on the position of the third indicating structure 140.

[0061] The second trigger structure 122 can directly contact the plate-shaped third indicator structure 140. The third indicator structure 140 can also be provided with a protrusion, and the second trigger structure 122 contacts the protrusion on the third indicator structure 140.

[0062] The first indicator structure 124, the second indicator structure 130, and the third indicator structure 140 are structural components of different colors, or the first indicator structure 124, the second indicator structure 130, and the third indicator structure 140 are provided with different markings so that operators can distinguish between the first indicator structure 124, the second indicator structure 130, and the third indicator structure 140.

[0063] The operator can determine the state of the circuit breaker 100 solely based on the positions of the first indicating structure 124, the second indicating structure 130, and the third indicating structure 140 observed through the indicating window 111, or simultaneously based on the positions of the different indicators observed through the indicating window 111 and the position of the operating handle 150 in the operating mechanism. The structure of the operating handle 150 is the same as that of operating handles in the prior art, and will not be described in detail here.

[0064] In this application example, the housing 110 is provided with an indicator window 111, through which the operator can observe the positions of different indicators within the housing 110. When the first indicator is observed through the indicator window 111, it is determined that the circuit breaker 100 is in the open state. When the second indicator is observed through the indicator window 111, it is determined that the circuit breaker 100 is in the closed state. When the third indicator is observed through the indicator window 111, it is determined that the circuit breaker 100 is in the tripped state, thus identifying an overload or short-circuit fault in the circuit and promptly addressing the fault. According to the circuit breaker 100 provided in this application, the positions of different indicators within the housing 110 can be observed through the same indicator window 111, thereby determining whether the circuit breaker 100 is in the open, closed, or tripped state. This avoids the operator needing to observe the state of the circuit breaker 100 from multiple locations, simplifying the operator's method of determining the state of the circuit breaker 100 and improving the accuracy of state identification.

[0065] Based on the circuit breaker 100 provided in the example above, please refer to... Figures 2-5The moving contact assembly 120 is also provided with a reset structure 123, which is located between the first trigger structure 121 and the second trigger structure 122. At least a portion of the first indicator structure 124 is located on the side of the reset structure 123 away from the first trigger structure 121. During the process of the circuit breaker 100 switching from the closed state to the open state, the moving contact assembly 120 rotates from the second position to the first position, and the reset structure 123 drives the second indicator structure 130 to move away from the second trigger structure 122. At the same time, at least a portion of the first indicator structure 124 is in the position corresponding to the indicator window 111.

[0066] The reset structure 123 can be a protrusion, hook, or other structure provided on the moving contact assembly 120. Specifically, the reset structure 123 is provided on the contact support 125.

[0067] The first indicator structure 124 may be located only on the side of the reset structure 123 away from the first trigger structure 121. Alternatively, the first indicator structure may be located on the side of the reset structure 123 away from the first trigger structure 121, while also being located on the side of the reset structure 123 facing the first trigger structure 121. This application example does not impose any specific limitations on this.

[0068] During the process of switching the circuit breaker 100 from the closed state to the open state, the operating mechanism drives the contact assembly 120 to rotate counterclockwise, causing the moving contact assembly 120 to separate from the stationary contact. The reset structure 123 can abut against the second indicating structure 130, applying force to the second indicating structure 130. Under the action of the reset structure 123, the second indicating structure 130 moves away from the second trigger structure 122, thereby causing the second indicating structure 130 to move away from the indicating window 111. The first indicating structure 124 arrives at the position corresponding to the indicating window 111 along with the rotation of the moving contact assembly 120.

[0069] In this example, during the switching process of the circuit breaker 100 from the closed state to the open state, the first indicating structure 124 moves to the position corresponding to the indicating window 111 as the moving contact assembly 120 rotates. Since the moving contact assembly 120 is provided with a reset structure 123, during the rotation of the moving contact assembly 120, the reset structure 123 applies a force to the second indicating structure 130, causing the second indicating structure 130 to move away from the indicating window 111. This prevents the second indicating structure 130 from obstructing the first indicating structure 124, thus avoiding the operator's misidentification of the circuit breaker 100's state.

[0070] Based on the circuit breaker 100 provided in the above example, Figure 9 Please refer to the structural schematic diagram of a second indicator provided as an example of this application. Figures 2-5 as well as Figure 9The second indicator structure 130 includes a second display section 131 connected to a contact protrusion 132. The second display section 131 is slidable to a position corresponding to the indicator window 111. The contact protrusion 132 is located on the side of the second display section 131 opposite to the indicator window 111. During the process of the circuit breaker 100 switching from the open state to the closed state, the first trigger structure 121 pushes against the contact protrusion 132, so that the second display section 131 moves to the position corresponding to the indicator window 111.

[0071] The second display unit 131 has a plate-like structure, which can be a rectangular plate, a circular plate, an elliptical plate, or other shapes.

[0072] The abutment protrusion 132 can be a protrusion, boss, ridge, or the like that can cooperate with the first trigger structure 121 so that the second display part 131 can move to the position corresponding to the indicator window 111. The second display part 131 and the abutment protrusion 132 are integrally formed, or the abutment protrusion 132 is fixedly connected by means of insertion, bonding, fusion bonding, etc. This application example does not make specific limitations in this regard.

[0073] When the moving contact assembly 120 is provided with a reset structure 123, during the process of the circuit breaker 100 rotating from the closed state to the open state, the reset structure 123 pushes against the side of the abutment protrusion 132 close to the second trigger structure 122, so that the second display part 131 moves away from the second trigger structure 122.

[0074] In this example, during the switching process of the circuit breaker 100 from the open state to the closed state, the first trigger structure 121 provided on the moving contact assembly 120 contacts the abutment protrusion 132, applying force to the abutment protrusion 132. Since the abutment protrusion 132 is connected to the second display unit 131, it can drive the second display unit 131 to the position corresponding to the indicator window 111. By providing the abutment protrusion 132, the distance between the second indicator structure 130 and the first trigger structure 121 can be reduced, thereby improving the reliability of the first trigger structure 121 driving the second indicator structure 130 to move.

[0075] Based on the circuit breaker 100 provided in the example above, please refer to... Figures 2-5 as well as Figure 9 The second indicating structure 130 also includes a limiting protrusion 133. The limiting protrusion 133 is spaced apart from the abutting protrusion 132. During the process of switching the circuit breaker 100 from the open state to the closed state, the limiting protrusion 133 is used to limit the displacement of the second display section 131 relative to the indicating window 111.

[0076] The limiting protrusion 133 can be a protruding column, a boss, or other structures.

[0077] The limiting protrusion 133 and the abutting protrusion 132 are spaced apart. Specifically, the limiting protrusion 133 can be located on the side of the abutting protrusion 132 away from the indicator window 111, or it can be located on the side of the abutting protrusion 132 closer to the indicator window 111. This application example does not impose specific limitations on this. Due to the different positions of the limiting protrusion 133, the corresponding structural components that cooperate with the limiting protrusion 133 are different. For details on the specific settings of the limiting protrusion 133, please refer to the relevant description below.

[0078] In this example, the second indicating structure 130 is provided with a limiting protrusion 133. During the process of switching the circuit breaker 100 from the open state to the closed state, the limiting protrusion 133 can contact the structure inside the circuit breaker 100 to limit the displacement of the second indicating structure 130 relative to the indicating window 111, so that the second indicating structure 130 is maintained at the position corresponding to the indicating window 111. This avoids the situation where, when the circuit breaker 100 is in the closed state, the second indicating structure 130 moves excessively and leaves the position corresponding to the indicating window 111, thus preventing the operator from misidentifying the state of the circuit breaker 100.

[0079] Next, the specific settings of the limiting protrusion 133 will be described in detail.

[0080] For some possible implementations, please refer to Figures 2-5 as well as Figure 9 The limiting protrusion 133 includes a first limiting protrusion 1331, which is located on the side of the second display section 131 away from the indicator window 111, and is located on the side of the abutment protrusion 132 away from the second trigger structure 122. The first limiting protrusion 1331 can be engaged with the side of the first trigger structure 121 away from the second trigger structure 122.

[0081] Along the direction from the second display section 131 toward the abutment protrusion 132, the dimensions of the first limiting protrusion 1331 and the abutment protrusion 132 may be the same or different. This application example does not impose specific limitations on this, as long as it ensures that during the rotation of the moving contact assembly 120, the abutment protrusion 132 does not interfere with the reset structure 123 on the moving contact assembly 120, and when the circuit breaker 100 is in the closed state, the first limiting protrusion 1331 can engage with the first trigger structure 121 to limit the position of the second indicating structure 130 relative to the indicating window 111. The structure of the abutment protrusion 132 and the first limiting protrusion 1331 may be the same or different. Taking the first limiting protrusion 1331 as an example, the first limiting protrusion 1331 may be prismatic, cylindrical, or frustum-shaped, etc.

[0082] The first limiting protrusion 1331 and the first trigger structure 121 can be in surface contact or in line contact. This application example does not impose specific restrictions on this.

[0083] In this example, the first limiting protrusion 1331 is located on the side of the second display section 131 away from the indicator window 111, and the first limiting protrusion 1331 is also located on the side of the abutment protrusion 132 away from the second trigger structure 122. During the process of the circuit breaker 100 switching from the open state to the closed state, the first trigger structure 121 applies a force to the second indicator structure 130, causing the second indicator structure 130 to move closer to the indicator window 111. When the second indicator structure 130 reaches the position corresponding to the indicator window 111, if the second indicator structure 130 continues to move towards the second trigger structure 122, the first limiting protrusion 1331 can engage with the side of the first trigger structure 121 away from the second trigger structure 122, so that the first trigger structure 121 applies a force to the first limiting protrusion 1331 away from the second trigger structure 122, thereby preventing the second indicator structure 130 from moving further closer to the second trigger structure 122, and keeping the second indicator structure 130 at the position corresponding to the indicator window 111. To avoid situations where the second indicating structure 130 moves excessively when the circuit breaker 100 is in the closed state, causing the second indicating structure 130 to leave the position corresponding to the indicating window 111, thus leading to the operator misidentifying the status of the circuit breaker 100.

[0084] Based on the circuit breaker 100 provided in the above example, the first triggering structure 121 is provided with a clearance part. During the process of switching the circuit breaker 100 from the open state to the closed state, the clearance part is used to avoid the first limit protrusion 1331.

[0085] During the process of switching the circuit breaker 100 from the closed state to the open state, the clearance part is always positioned towards the first trigger structure 121. The clearance part can be a groove structure provided in the first trigger structure 121, or it can be a cross-sectional structure or a chamfered structure provided in the first trigger structure 121. This application example does not impose specific limitations on this.

[0086] In this application example, by providing a clearance part in the first trigger structure 121, during the process of switching the circuit breaker 100 from the open state to the closed state, the distance between the first trigger structure 121 and the first limit protrusion 1331 can be larger, thereby reducing the possibility of interference between the first trigger structure 121 and the first limit protrusion 1331 during the rotation of the moving contact assembly 120, and ensuring the reliability of the first trigger structure 121 driving the second indicator structure 130 to the corresponding position of the indicator window 111.

[0087] In some possible implementations, the limiting protrusion includes a second limiting protrusion, which is located on the side of the second display section 131 near the indicator window 111 (not shown in the figure), and the second limiting protrusion is located on the side of the abutment protrusion 132 near the second trigger structure 122. The second limiting protrusion can abut against the housing 110 or the second indicator structure 130.

[0088] The second limiting protrusion can be prismatic, cylindrical, or frustum-shaped, etc.

[0089] When the circuit breaker 100 is in the closed state, the second limiting protrusion can extend from the indicating window 111 to the outside of the housing 110. The second limiting protrusion can also be flush with the outer wall of the housing 110, or it can be lower than the outer wall of the housing 110. When the second limiting protrusion is flush with the outer wall of the housing 110, or when the second limiting protrusion is lower than the outer wall of the housing 110, the extension of the second limiting protrusion to the outside of the housing 110 can be avoided. This reduces or even avoids the possibility that the external structure of the circuit breaker 100 might accidentally touch the second limiting protrusion, causing the second limiting protrusion to move under force and causing the second indicating structure 130 to disengage from the corresponding position of the indicating window 111.

[0090] When the second limiting protrusion is lower than the outer wall of the housing 110, the second limiting protrusion can abut against the side wall of the indicator window 111, the second limiting protrusion can abut against the protrusion structure provided on the inner wall of the housing 110, and the second limiting protrusion can also contact the third indicator structure 140. This application example does not impose specific limitations on this.

[0091] In this example, the second limiting protrusion is located on the side of the second indicating structure 130 near the indicating window 111. During the process of the circuit breaker 100 switching from the open state to the closed state, the first triggering structure 121 applies a force to the second indicating structure 130, causing the second indicating structure 130 to move closer to the indicating window 111. When the second indicating structure 130 reaches the position corresponding to the indicating window 111, since the second limiting protrusion is located on the side of the abutment protrusion 132 close to the second trigger structure 122, if the second indicating structure 130 continues to move towards the second trigger structure 122, the second limiting protrusion can engage with the housing 110 or the second indicating structure 130. The housing 110 or the second indicating structure 130 exerts a force away from the second trigger structure 122 at the point where the second limiting protrusion is applied, thereby preventing the second indicating structure 130 from moving further towards the second trigger structure 122. This keeps the second indicating structure 130 at the position corresponding to the indicating window 111, preventing the second indicating structure 130 from moving excessively when the circuit breaker 100 is in the closed state, causing the second indicating structure 130 to leave the position corresponding to the indicating window 111, which could lead to the operator misidentifying the status of the circuit breaker 100.

[0092] In this application example, the first limiting protrusion 1331 may be provided only on the side of the second display part 131 away from the indicator window 111, or the second limiting protrusion may be provided only on the side of the second display part 131 facing the indicator window 111, or the first limiting protrusion 1331 may be provided on the side of the second display part 131 away from the indicator window 111 and the second limiting protrusion may be provided on the side of the second display part 131 facing the indicator window 111. This application example does not impose specific limitations on this.

[0093] Based on the circuit breaker 100 provided in the above example, the first indicating structure 124 is provided with a first identifier. When the first identifier is in the position corresponding to the indicating window 111, it indicates that the circuit breaker 100 is in the open state. The second indicating structure 130 is provided with a second identifier, which is different from the first identifier. When the second identifier is in the position corresponding to the indicating window 111, it indicates that the circuit breaker 100 is in the closed state. The third indicating structure 140 is provided with a third identifier, which is different from both the first and second identifiers. When the third identifier is in the position corresponding to the indicating window 111, it indicates that the circuit breaker 100 is in a fault state.

[0094] The first, second, and third identifiers can be different colors. For example, the first identifier can be green, the second identifier can be red, and the third identifier can be yellow. The first, second, and third identifiers can also be other different colors, such as blue, orange, or purple, as long as the operator can determine the status of the circuit breaker 100 by identifying the corresponding indicator in the indicator window 111.

[0095] The first, second, and third identifiers can be different Chinese characters, letters, numbers, or shapes. For example, if the first, second, and third identifiers are Chinese characters, the first identifier indicates a tripped circuit breaker, the second indicates a closed circuit breaker, and the third indicates a tripped circuit breaker. The first, second, and third identifiers can belong to the same category of identifiers, for example, all being color identifiers, or all being Chinese character identifiers. Alternatively, the first, second, and third identifiers can belong to different categories of identifiers, for example, the first identifier is a color identifier, the second is a Chinese character identifier, and the third is a letter identifier, etc.

[0096] In this application example, a first identifier is set in the first indicator structure 124, a second identifier is set in the second indicator structure 130, and a third identifier is set in the third indicator structure 140. Since the first identifier, the second identifier, and the third identifier are all different, when the corresponding identifier is in the position corresponding to the indicator window 111, the operator can quickly and accurately determine the indicator in the position corresponding to the indicator window 111 based on the identifier, and thus determine the state of the circuit breaker 100.

[0097] Based on the circuit breaker 100 provided in the above example, the first triggering structure 121 is a first hook structure, and the first hook structure is in contact with the abutting protrusion 132.

[0098] In this application example, the first hook structure is set to contact the surface of the abutting protrusion 132, which can make the contact area between the first hook structure and the abutting protrusion 132 larger, thereby ensuring the reliability of the contact between the first hook structure and the abutting protrusion 132.

[0099] Based on the circuit breaker 100 provided in the above example, the second triggering structure 122 is a second latching structure, and the second latching structure is in surface contact with the third indicating structure 140.

[0100] In this application example, the second hook structure is made to contact the third indicator structure 140, which can make the contact area between the second hook structure and the third indicator structure 140 larger, thereby ensuring the contact reliability between the second hook structure and the third indicator structure 140.

[0101] In this application example, the first trigger structure 121 can be set as the first hook structure, and the first hook structure contacts the surface of the abutting protrusion 132. Alternatively, the second trigger structure 122 can be set as the second hook structure, and the second hook structure contacts the surface of the third indicator structure 140. Furthermore, based on setting the first trigger structure 121 as the first hook structure and the first hook structure to contact the surface of the abutting protrusion 132, the second trigger structure 122 can also be set as the second hook structure, and the second hook structure contacts the surface of the third indicator structure 140.

[0102] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A circuit breaker, characterized in that, include: The casing is equipped with an indicator window; The moving contact assembly is rotatably mounted to the housing. The moving contact assembly includes a first trigger structure and a second trigger structure spaced apart. A first indicator structure is provided between the first trigger structure and the second trigger structure. When the circuit breaker is in the open state, the moving contact assembly is in a first position, and at least part of the first indicator structure is in the position corresponding to the indicator window. The second indicator structure is slidably installed on the housing. During the process of the circuit breaker switching from the open state to the closed state, the moving contact assembly rotates from the first position to the second position, and the first trigger structure drives the second indicator structure to the position corresponding to the indicator window. The third indicator structure is slidably mounted to the housing. When the circuit breaker is in a fault state, the moving contact assembly is in the third position, and the second trigger structure drives the third indicator structure to the position corresponding to the indicator window.

2. The circuit breaker according to claim 1, characterized in that, The moving contact assembly is further provided with a reset structure, which is located between the first trigger structure and the second trigger structure. At least a portion of the first indicator structure is located on the side of the reset structure away from the first trigger structure. During the process of the circuit breaker switching from the closed state to the open state, the moving contact assembly rotates from the second position to the first position, and the reset structure drives the second indicator structure to move along a position away from the second trigger structure. At least a portion of the first indicator structure is located at the position corresponding to the indicator window.

3. The circuit breaker according to claim 1 or 2, characterized in that, The second indicating structure includes: The second display unit can be slid to the position corresponding to the indicator window; The abutment protrusion is connected to the side of the second display unit opposite to the indicator window. During the process of the circuit breaker switching from the open state to the closed state, the first trigger structure pushes against the abutment protrusion to move the second display unit to the position corresponding to the indicator window.

4. The circuit breaker according to claim 3, characterized in that, The second indicating structure also includes: A limiting protrusion is provided at a distance from the abutting protrusion. During the process of the circuit breaker switching from the open state to the closed state, the limiting protrusion is used to limit the displacement of the second display unit relative to the indicator window.

5. The circuit breaker according to claim 4, characterized in that, The limiting protrusion includes a first limiting protrusion, which is located on the side of the second display unit away from the indicator window, and is also located on the side of the abutting protrusion away from the second trigger structure. The first limiting protrusion can be engaged with the side of the first trigger structure away from the second trigger structure.

6. The circuit breaker according to claim 5, characterized in that, The first triggering structure is provided with a clearance part, which is used to avoid the first limit protrusion during the process of the circuit breaker switching from the open state to the closed state.

7. The circuit breaker according to claim 4, characterized in that, The limiting protrusion includes a second limiting protrusion, which is located on the side of the second display unit near the indicator window, and is also located on the side of the abutment protrusion near the second trigger structure. The second limiting protrusion can abut against the housing or the second indicator structure.

8. The circuit breaker according to claim 1, characterized in that, The first indicator structure is provided with a first identifier. When the first identifier is in the position corresponding to the indicator window, it indicates that the circuit breaker is in the open state. The second indicator structure is provided with a second identifier, which is different from the first identifier. When the second identifier is in the position corresponding to the indicator window, it indicates that the circuit breaker is in the closed state. The third indicator structure is provided with a third identifier, which is different from the first identifier and the second identifier. When the third identifier is in the position corresponding to the indicator window, it indicates that the circuit breaker is in a fault state.

9. The circuit breaker according to claim 4, characterized in that, The first triggering structure is a first hook structure, which contacts the abutting protrusion.

10. The circuit breaker according to claim 4 or 9, characterized in that, The second triggering structure is a second hook structure, which is in contact with the surface of the third indicating structure.

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