Miniature circuit breaker short circuit protection indicating mechanism
By designing a short-circuit protection indicating mechanism in a miniature circuit breaker and utilizing the coordinated action of the transmission and indicating components, the problem of the miniature circuit breaker's inability to clearly indicate during short-circuit protection is solved, thereby improving the circuit breaker's safety and ease of maintenance.
Patent Information
- Application Number
- CN202520353553.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing miniature circuit breakers, after implementing abnormal current protection, cannot clearly indicate whether it is due to overload protection or short circuit protection, making line maintenance and troubleshooting difficult.
A short-circuit protection indicating mechanism for a miniature circuit breaker was designed, comprising an adsorption core, a trip armature, a transmission component, an indicator, and a spring. After the trip armature is activated by the action of a magnetic field, the transmission component blocks the trip armature from resetting, thereby driving the indicator to activate and clearly indicate short-circuit protection.
It enables clear indication during short-circuit protection, ensures circuit breaker safety, simplifies line maintenance and troubleshooting, and improves the safety and reliability of miniature circuit breakers.
Smart Images
Figure CN223927323U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of miniature circuit breakers, and in particular to a short-circuit protection indicating mechanism of a miniature circuit breaker. BACKGROUND
[0002] At present, the low-voltage electrical appliance field is developing in the direction of intelligence, such as smart home, 5G communication, etc. Therefore, the miniature circuit breaker suitable for the 5G communication cabinet also needs to meet the needs of miniaturization and intelligence. However, the current miniature circuit breaker cannot clearly indicate whether it is due to overload protection or short-circuit protection after implementing abnormal current protection, which causes difficulties in troubleshooting the abnormal line. CONTENT OF THE UTILITY MODEL
[0003] In order to solve one of the technical problems existing in the prior art, the present application proposes a short-circuit protection indicating mechanism applied to a miniature circuit breaker, which can indicate a short-circuit problem after the miniature circuit breaker is actuated due to short-circuit protection.
[0004] The technical scheme adopted by the present application to solve its technical problems is: a short-circuit protection indicating mechanism of a miniature circuit breaker, comprising a circuit breaker shell, an adsorption iron core and a release armature are arranged in the circuit breaker shell, the adsorption iron core generates a magnetic field to adsorb the release armature when the circuit breaker is short-circuited, the release armature has a first state of being away from the adsorption iron core and a second state of being adsorbed by the adsorption iron core; the short-circuit protection indicating mechanism comprises an indicating piece, a transmission piece and a spring, the indicating piece is rotatably arranged on the circuit breaker shell, a first surface is arranged on the indicating piece, the first surface is normally located inside the circuit breaker shell, at least part of the first surface of the indicating piece extends outside the circuit breaker shell when the indicating piece is rotated in a first direction; the transmission piece is movably installed in the circuit breaker shell, a first end of the transmission piece abuts against the indicating piece, a second end of the transmission piece abuts against the release armature, the spring is arranged on the transmission piece and generates an elastic force to drive the transmission piece to rotate in a third direction, the transmission piece drives the indicating piece to rotate in the first direction when the transmission piece rotates in the third direction; when the release armature is in the first state, the release armature is in the path of the transmission piece rotating in the third direction, the transmission piece abuts against the side edge of the release armature, and the first surface of the indicating piece is located inside the circuit breaker shell; when the release armature is in the second state, the release armature is away from the rotation path of the transmission piece, the transmission piece rotates in the third direction under the action of the spring, the first end of the transmission piece drives the indicating piece to rotate in the first direction, so that the first surface extends outside the circuit breaker shell, and at the same time, the second end of the transmission piece rotates to the front of the release armature to limit the release armature to reset to the first state.
[0005] In some embodiments of this application, the trip armature has an adsorption surface and a first hinge ring, the trip armature is rotatably disposed within the circuit breaker housing via the first hinge ring, and at least a portion of the adsorption surface faces the adsorption core.
[0006] In some embodiments of this application, a mounting cylinder is provided in the middle of the transmission component, and the spring is installed inside the mounting cylinder.
[0007] In some embodiments of this application, the spring is a torsion spring.
[0008] In some embodiments of this application, a warning sign is provided on the first surface of the indicator.
[0009] In some embodiments of this application, the first surface of the indicator is provided with a first side and a second side, the first side and the second side are disposed opposite to each other, and the first end of the transmission member abuts against the first side; when the transmission member rotates in a third direction, the first end of the transmission member pushes the first side, the indicator rotates in a first direction, and the first surface and the second side extend out of the circuit breaker housing; when the second side is pressed, the indicator rotates in a second direction, and the first surface returns to the circuit breaker housing, wherein the first direction and the second direction are opposite to each other.
[0010] In some embodiments of this application, the indicator is further provided with a reset protrusion. When the indicator rotates in the second direction, the reset protrusion pushes the first end of the transmission member, causing the transmission member to rotate and reset in the fourth direction, wherein the third direction and the fourth direction are opposite to each other.
[0011] In some embodiments of this application, the trip armature is provided with an elastic element. After the transmission member rotates and resets in the fourth direction, the trip armature is reset to the first state under the elastic force of the elastic element.
[0012] In some embodiments of this application, the indicator is provided with a second hinge ring, and the indicator is rotatably disposed within the circuit breaker housing via the second hinge ring.
[0013] By implementing this application, the following beneficial effects are achieved: This application proposes a short-circuit protection indicating mechanism for miniature circuit breakers. When the circuit breaker is short-circuited and the iron core is attracted, causing the trip armature to actuate, a transmission component blocks the trip armature, preventing it from resetting. This prevents the circuit breaker from being connected, and normal connection and disconnection operations can only be performed after manual reset, ensuring safety. The transmission component simultaneously drives the indicating component to actuate, realizing the short-circuit protection indicating function. The short-circuit protection indicating mechanism for miniature circuit breakers in this application has a simple structure, requires fewer parts, operates stably and reliably, improves the safety of miniature circuit breakers, and also has a short-circuit protection indicating function, facilitating line maintenance and troubleshooting. Attached Figure Description
[0014] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0015] Figure 1 This is a schematic diagram of the structure of the short-circuit protection indicating mechanism of the miniature circuit breaker provided in this application;
[0016] Figure 2 This is one of the structural schematic diagrams of the short-circuit protection indication mechanism of a miniature circuit breaker under short-circuit conditions;
[0017] Figure 3 This is the second schematic diagram of the structure of the short-circuit protection indicator mechanism of a miniature circuit breaker under short-circuit conditions;
[0018] Figure 4 This is a schematic diagram of the trip armature structure;
[0019] Figure 5 This is a structural schematic diagram of the indicator;
[0020] Figure 6 This is a structural schematic diagram of the transmission component.
[0021] Explanation of icon numbers:
[0022] Circuit breaker housing 100, adsorption core 200, trip armature 300, adsorption surface 310, first hinge ring 310, indicator 400, first surface 410, first side 411, reset protrusion 412, second side 413, second hinge ring 420, transmission component 500, first end 510, second end 520, mounting cylinder 530, spring 600. Detailed Implementation
[0023] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a chemical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] The following is in conjunction with the appendix Figures 1 to 6 The following is a further explanation of the short-circuit protection indication mechanism of the miniature circuit breaker in this application.
[0028] See Figures 1 to 3Some embodiments of this application disclose a short-circuit protection indicating mechanism for a miniature circuit breaker, including a circuit breaker housing 100. An adsorption core 200 and a trip armature 300 are disposed within the circuit breaker housing 100. When the circuit breaker is short-circuited, the adsorption core 200 generates a magnetic field to attract the trip armature 300. The trip armature 300 has a first state of being away from the adsorption core 200 and a second state of being attracted by the adsorption core 200. The short-circuit protection indicating mechanism includes an indicating element 400 and a transmission element 500. Along with spring 600, indicator 400 is rotatably mounted on circuit breaker housing 100. Indicator 400 has a first surface 410, which is normally located inside circuit breaker housing 100. When indicator 400 rotates in a first direction, at least a portion of the first surface 410 extends outside circuit breaker housing 100. Transmission member 500 is movably mounted inside circuit breaker housing 100. The first end of transmission member 500 abuts against indicator 400, and the second end 520 of transmission member 500... The trip armature 300 abuts against the spring 600, which is mounted on the transmission member 500 and generates an elastic force that drives the transmission member 500 to rotate in a third direction. When the transmission member 500 rotates in the third direction, it drives the indicator 400 to rotate in the first direction. Specifically, when the trip armature 300 is in the first state, it is located on the path of the transmission member 500's rotation in the third direction, the transmission member 500 abuts against the side of the trip armature 300, and the first surface 410 of the indicator 400 is located at the open circuit. Inside the circuit breaker housing 100; when the trip armature 300 is in the second state, the trip armature 300 leaves the rotation path of the transmission member 500, and the transmission member 500 rotates in the third direction under the action of the spring 600. The first end of the transmission member 500 drives the indicator 400 to rotate in the first direction, so that the first surface 410 extends out of the circuit breaker housing 100. At the same time, the second end 520 of the transmission member 500 rotates to the front of the trip armature 300 to restrict the trip armature 300 from resetting to the first state. This application proposes a short-circuit protection indicating mechanism for miniature circuit breakers. When the circuit breaker is short-circuited and the adsorption core 200 causes the trip armature 300 to actuate, the transmission component 500 blocks the trip armature 300, preventing it from resetting. This prevents the circuit breaker from being connected, and normal connection and disconnection operations can only be performed after manual reset, ensuring safety. Simultaneously, the transmission component 500 actuates the indicating component 400, realizing the short-circuit protection indicating function. The short-circuit protection indicating mechanism of this application has a simple structure, requires fewer parts, operates stably and reliably, improves the safety of miniature circuit breakers, and provides short-circuit protection indicating function, facilitating line maintenance and troubleshooting.
[0029] In some embodiments of this application, such as Figure 4As shown, the trip armature 300 has an adsorption surface 310 and a first hinge ring 320. The trip armature 300 is rotatably disposed within the circuit breaker housing 100 via the first hinge ring 320, with at least a portion of the adsorption surface 310 facing the adsorption core 200. The trip armature 300 is hinged within the circuit breaker housing 100 and is further limited by a limiting structure within the circuit breaker housing 100, restricting its rotation to a certain range.
[0030] In some embodiments of this application, such as Figure 6 As shown, a mounting cylinder 530 is provided in the middle of the transmission component 500, and the spring 600 is installed inside the mounting cylinder 530. Furthermore, the spring 600 is preferably a torsion spring, which can ensure a small volume and can easily drive the transmission component 500 to rotate.
[0031] In some embodiments of this application, a warning label is provided on the first side 410 of the indicator 400 to make it easier for the operator to notice the indication of short-circuit protection activation. Furthermore, the warning label may be a red image.
[0032] In some embodiments of this application, such as Figure 5 As shown, the first surface 410 of the indicator 400 is provided with a first side 411 and a second side 413, which are arranged opposite to each other. The first end 510 of the transmission member 500 abuts against the first side 411. When the transmission member rotates in a third direction, the first end 510 of the transmission member 500 pushes the first side 411, and the indicator 400 rotates in the first direction. The first surface 410 and the second side 413 extend out of the circuit breaker housing 100. When the second side 413 is pressed, the indicator 400 rotates in the second direction, and the first surface 410 returns to the circuit breaker housing 100. The first direction and the second direction are opposite to each other.
[0033] In some embodiments of this application, such as Figure 5 As shown, the indicator 400 is also provided with a reset protrusion 412. When the indicator 400 rotates in the second direction, the reset protrusion 412 pushes the first end 510 of the transmission member 500, so that the transmission member 500 rotates and resets in the fourth direction. The third direction and the fourth direction are opposite to each other.
[0034] In some embodiments of this application, the trip armature 300 is provided with an elastic element. After the transmission member 500 rotates and resets in the fourth direction, the trip armature 300 is reset to the first state under the elastic force of the elastic element.
[0035] In some embodiments of this application, the indicator 400 is provided with a second hinge ring 420, and the indicator 400 is rotatably disposed within the circuit breaker housing 100 via the second hinge ring 420.
[0036] The operating mode of the short-circuit protection indicating mechanism of the miniature circuit breaker in this application is as follows:
[0037] Normal operating condition of circuit breaker: such as Figure 1 As shown, when the circuit breaker is in normal working condition, the trip armature 300 is in the first state, and the second end 520 of the transmission component 500 is slightly resting on the side of the trip armature 300 under the action of the spring 600. The first surface 410 of the indicator 400 is inside the circuit breaker housing 100 and does not protrude from the circuit breaker panel, and is in a non-indicating state. At this time, the circuit breaker and the overload trip circuit breaker can be operated normally.
[0038] Short circuit protection status: such as Figure 2 and Figure 3 As shown, when the circuit breaker is subjected to a short-circuit current, the adsorption core 200 is energized and generates a magnetic field. The adsorption core 200 adsorbs the trip armature 300, causing the trip armature 300 to enter the second state. The trip armature 300 moves away from the second end 520 of the transmission member 500. Under the action of the spring 600, the second end 520 of the transmission member 500 rotates to the adsorption surface 310 of the trip armature 300, preventing the trip armature 300 from resetting when the circuit breaker trips. The first end 510 of the transmission member 500 pushes the first side 411 of the indicator 400, causing the first surface 410 of the indicator 400 to extend out of the circuit breaker panel, thus performing the indicating function.
[0039] Clearing the alarm state: When the circuit breaker is in the short circuit indication state, after the operator has cleared the fault, simply press the second side 413 of the indicator 400 to make it flush with the circuit breaker panel. During this process, the reset protrusion 412 of the indicator 400 will push the first end 510 of the transmission component 500, causing the transmission component 500 to rotate against the elastic force of the spring 600. The second end 520 of the transmission component 500 will return to the side of the trip armature 300. At this time, the trip armature 300 is no longer restricted by the transmission component 500 and is reset to the first state. The circuit breaker can then perform normal connection and disconnection operations.
[0040] It is understood that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application's patent. It should be noted that, for those skilled in the art, without departing from the concept of this application, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of this application, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. Therefore, all equivalent transformations and modifications made within the scope of the claims of this application should fall within the coverage of the claims of this application.
Claims
1. A short-circuit protection indicating mechanism for a miniature circuit breaker, comprising a circuit breaker housing (100), wherein an adsorption core (200) and a trip armature (300) are disposed within the circuit breaker housing (100), the adsorption core (200) generating a magnetic field to adsorb the trip armature (300) when the circuit breaker is short-circuited, the trip armature (300) having a first state of being away from the adsorption core (200) and a second state of being adsorbed by the adsorption core (200); characterized in that: The short-circuit protection indicating mechanism includes an indicating element (400), a transmission element (500), and a spring (600). The indicating element (400) is rotatably mounted on the circuit breaker housing (100). The indicating element (400) has a first surface (410), which is normally located inside the circuit breaker housing (100). When the indicating element (400) rotates in a first direction, at least a portion of the first surface (410) extends outside the circuit breaker housing (100). The transmission element (500)... 0) The transmission member (500) is movably installed inside the circuit breaker housing (100). The first end (510) of the transmission member (500) abuts against the indicator (400), and the second end (520) of the transmission member (500) abuts against the trip armature (300). The spring (600) is disposed on the transmission member (500) and generates an elastic force that drives the transmission member (500) to rotate in a third direction. When the transmission member (500) rotates in the third direction, it drives the indicator (400) to rotate in the first direction. When the trip armature (300) is in the first state, the trip armature (300) is located on the path of the transmission member (500) rotating in the third direction, the transmission member (500) abuts against the side of the trip armature (300), and the first surface (410) of the indicator (400) is located inside the circuit breaker housing (100); When the trip armature (300) is in the second state, the trip armature (300) leaves the rotation path of the transmission member (500), and the transmission member (500) rotates in the third direction under the action of the spring (600). The first end (510) of the transmission member (500) drives the indicator (400) to rotate in the first direction, so that the first surface (410) extends out of the circuit breaker housing (100). At the same time, the second end (520) of the transmission member (500) rotates to the front of the trip armature (300) to restrict the trip armature (300) from resetting to the first state.
2. The miniature circuit breaker short-circuit protection indicating mechanism according to claim 1, characterized in that, The trip armature (300) has an adsorption surface (310) and a first hinge ring (320). The trip armature (300) is rotatably disposed in the circuit breaker housing (100) via the first hinge ring (320), and at least a portion of the adsorption surface (310) faces the adsorption core (200).
3. The miniature circuit breaker short-circuit protection indicating mechanism according to claim 1, characterized in that, The transmission component (500) has a mounting cylinder (530) in the middle, and the spring (600) is installed inside the mounting cylinder (530).
4. The short-circuit protection indicating mechanism for a miniature circuit breaker according to claim 3, characterized in that, The spring (600) is a torsion spring.
5. The short-circuit protection indicating mechanism for a miniature circuit breaker according to claim 1, characterized in that, A warning sign is provided on the first side (410) of the indicator (400).
6. The short-circuit protection indicating mechanism for a miniature circuit breaker according to claim 1, characterized in that, The indicator (400) has a first side (411) and a second side (413) on its first surface (410), the first side (411) and the second side (413) are arranged opposite to each other, and the first end (510) of the transmission member (500) abuts against the first side (411). When the transmission member rotates in a third direction, the first end (510) of the transmission member (500) pushes the first side (411), the indicator (400) rotates in a first direction, and the first surface (410) and the second side (413) extend out of the circuit breaker housing (100); when the second side (413) is pressed, the indicator (400) rotates in a second direction, and the first surface (410) returns to the circuit breaker housing (100), wherein the first direction and the second direction are opposite to each other.
7. The miniature circuit breaker short-circuit protection indicating mechanism according to claim 6, characterized in that, The indicator (400) is also provided with a reset protrusion (412). When the indicator (400) rotates in the second direction, the reset protrusion (412) pushes the first end (510) of the transmission member (500) to rotate and reset in the fourth direction, wherein the third direction and the fourth direction are opposite to each other.
8. The short-circuit protection indicating mechanism for a miniature circuit breaker according to claim 7, characterized in that, The trip armature (300) is provided with an elastic element. After the transmission member (500) rotates and resets in the fourth direction, the trip armature (300) is reset to the first state under the elastic force of the elastic element.
9. The short-circuit protection indicating mechanism for a miniature circuit breaker according to claim 1, characterized in that, The indicator (400) is provided with a second hinge ring (420), and the indicator (400) is rotatably disposed inside the circuit breaker housing (100) via the second hinge ring (420).