Miniature circuit breaker short circuit protection indicating mechanism
By designing a short circuit protection indicator mechanism in a micro circuit breaker and short circuit indication using magnetic field and mechanical structure, the problem of inability to distinguish overload and short circuit protection in the prior art is solved, and the safety and maintenance convenience of the circuit breaker are improved.
Patent Information
- Application Number
- CN202510243416.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-05-02
AI Technical Summary
When abnormal current protection occurs in existing micro circuit breakers, it is impossible to clearly distinguish whether it is overload protection or short circuit protection, which makes it difficult to check the line maintenance.
A micro circuit breaker short circuit protection indicator mechanism is designed, which uses the magnetic field action of the adsorption core and tripping armature, combined with the mechanical structure of the transmission and spring to achieve the rotation of the indicator when the circuit breaker is short-circuited, and the first side extends out of the shell to clearly indicate the short circuit protection.
It realizes clear instructions when the circuit breaker is short-circuited, ensures safety, and simplifies the line maintenance and inspection process.
Smart Images
Figure CN119920658A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a technical field related to miniature circuit breakers, and in particular to a short-circuit protection indication mechanism for miniature circuit breakers. Background Art
[0002] At present, the field of low-voltage electrical appliances is developing towards intelligence, such as smart home and 5G communication. Therefore, the miniature circuit breakers suitable for 5G communication cabinets also need to meet the needs of miniaturization and intelligence. However, after achieving abnormal current protection, the current miniature circuit breakers cannot clearly indicate whether it is due to overload protection or short-circuit protection, which makes it difficult to troubleshoot abnormalities during line maintenance. Summary of the invention
[0003] In order to solve one of the technical problems existing in the prior art, the present application proposes a short-circuit protection indication mechanism applied to a miniature circuit breaker, which can indicate a short-circuit problem after the miniature circuit breaker is activated due to the short-circuit protection.
[0004] The technical solution adopted by the present application to solve its technical problems is: a short-circuit protection indication mechanism of a miniature circuit breaker, comprising a circuit breaker housing, wherein an adsorption iron core and a tripping armature are arranged in the circuit breaker housing, wherein the adsorption iron core generates a magnetic field to adsorb the tripping armature when the circuit breaker is short-circuited, and the tripping armature has a first state away from the adsorption iron core and a second state adsorbed by the adsorption iron core; the short-circuit protection indication mechanism comprises an indicating member, a transmission member and a spring, wherein the indicating member is rotatably arranged on the circuit breaker housing, wherein a first surface is arranged on the indicating member, wherein the first surface is usually located inside the circuit breaker housing, and when the indicating member rotates along a first direction, at least a part of the first surface extends out of the circuit breaker housing; the transmission member is movably installed in the circuit breaker housing, wherein a first end of the transmission member abuts against the indicating member, and a second end of the transmission member abuts against the indicating member, and a second end of the transmission member abuts against the indicating member. The trip armature is in contact with the trip armature, the spring is arranged on the transmission member and generates an elastic force driving the transmission member to rotate along a third direction, and the indicator member is driven to rotate along the first direction when the transmission member rotates along the third direction; wherein, when the trip armature is in the first state, the trip armature is on the path of the transmission member rotating along the third direction, the transmission member abuts against the side of the trip armature, and the first surface of the indicator member is located inside the circuit breaker housing; when the trip armature is in the second state, the trip armature leaves the rotation path of the transmission member, the transmission member rotates along the third direction under the action of the spring, the first end of the transmission member drives the indicator member to rotate along the first direction, so that the first surface extends out of the circuit breaker housing, and at the same time the second end of the transmission member rotates to the front of the trip armature to limit the trip armature from resetting to the first state.
[0005] In some embodiments of the present application, the trip armature has an adsorption surface and a first hinge ring, and the trip armature is rotatably disposed in the circuit breaker housing through the first hinge ring, and at least a portion of the adsorption surface faces the adsorption iron core.
[0006] In some embodiments of the present application, a mounting cylinder is provided in the middle of the transmission member, and the spring is installed in the mounting cylinder.
[0007] In some embodiments of the present application, the spring is a torsion spring.
[0008] In some embodiments of the present application, a warning mark is provided on the first surface of the indicator.
[0009] In some embodiments of the present application, a first edge and a second edge are provided on the first surface of the indicator, the first edge and the second edge are arranged opposite to each other, and the first end of the transmission member abuts against the first edge; when the transmission member rotates along the third direction, the first end of the transmission member pushes the first edge, the indicator rotates along the first direction, and the first surface and the second edge extend out of the circuit breaker housing; when the second edge is pressed, the indicator rotates along the second direction, and the first surface returns to the inside of the circuit breaker housing, wherein the first direction and the second direction are opposite directions to each other.
[0010] In some embodiments of the present application, a reset protrusion is also provided on the indicator member, and when the indicator member rotates along the second direction, the reset protrusion pushes the first end of the transmission member to cause the transmission member to rotate and reset along the fourth direction, wherein the third direction and the fourth direction are opposite directions to each other.
[0011] In some embodiments of the present application, an elastic member is provided on the tripping armature, and after the transmission member is rotated and reset along the fourth direction, the tripping armature is reset to the first state under the elastic force of the elastic member.
[0012] In some embodiments of the present application, a second hinge ring is provided on the indicator, and the indicator is rotatably disposed in the circuit breaker housing through the second hinge ring.
[0013] By implementing the present application, the following beneficial effects are achieved: the present application proposes a short-circuit protection indication mechanism for a miniature circuit breaker. When the circuit breaker is short-circuited and the attraction core causes the tripping armature to actuate, the tripping armature is blocked by a transmission member so that the tripping armature cannot be reset, thereby preventing the circuit breaker from being connected. Only after manual reset can the disconnection operation be normally connected, thereby ensuring safety; the transmission member actuates and drives the indication member to actuate at the same time, thereby realizing the short-circuit protection indication function; the short-circuit protection indication mechanism for the miniature circuit breaker of the present application has a simple structure, a small number of parts required, stable and reliable operation, thereby improving the safety of the miniature circuit breaker, and at the same time having a short-circuit protection indication function, thereby facilitating line maintenance and troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:
[0015] Figure 1 It is a structural schematic diagram of the short-circuit protection indicator mechanism of the miniature circuit breaker provided in the present application;
[0016] Figure 2 It is one of the structural schematic diagrams of the short-circuit protection indicator mechanism of the miniature circuit breaker in the short-circuit state;
[0017] Figure 3 This is the second structural diagram of the short-circuit protection indicator mechanism of the miniature circuit breaker in the short-circuit state;
[0018] Figure 4 It is a schematic diagram of the structure of the trip armature;
[0019] Figure 5 It is a structural schematic diagram of the indicator;
[0020] Figure 6 It is a structural diagram of the transmission parts.
[0021] Description of Figure Numbers:
[0022] Circuit breaker housing 100, adsorption core 200, tripping armature 300, adsorption surface 310, first hinge ring 310, indicator 400, first surface 410, first edge 411, reset protrusion 412, second edge 413, second hinge ring 420, transmission member 500, first end 510, second end 520, mounting cylinder 530, spring 600. DETAILED DESCRIPTION
[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are now described in detail with reference to the accompanying drawings.
[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.
[0025] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.
[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.
[0027] The following is combined with Figures 1 to 6 , the short-circuit protection indication mechanism of the miniature circuit breaker of the present application is further explained.
[0028] See also Figures 1 to 3Some embodiments of the present application disclose a short-circuit protection indication mechanism for a miniature circuit breaker, including a circuit breaker housing 100, wherein an adsorption core 200 and a trip armature 300 are arranged in the circuit breaker housing 100, wherein the adsorption core 200 generates a magnetic field to adsorb the trip armature 300 when the circuit breaker is short-circuited, and the trip armature 300 has a first state away from the adsorption core 200 and a second state adsorbed by the adsorption core 200; the short-circuit protection indication mechanism includes an indication member 400, a transmission member 500 The indicator 400 is rotatably arranged on the circuit breaker housing 100, and a first surface 410 is arranged on the indicator 400. The first surface 410 is usually located inside the circuit breaker housing 100. When the indicator 400 rotates along the first direction, at least part of the first surface 410 extends out of the circuit breaker housing 100; the transmission member 500 is movably installed in the circuit breaker housing 100, the first end of the transmission member 500 is in contact with the indicator 400, and the second end 520 of the transmission member 500 is in contact with the indicator 400. The trip armature 300 is in contact with the trip armature 300, the spring 600 is arranged on the transmission member 500 and generates an elastic force driving the transmission member 500 to rotate along the third direction, and the transmission member 500 rotates along the third direction to drive the indicator member 400 to rotate along the first direction; wherein, when the trip armature 300 is in the first state, the trip armature 300 is in the path of the transmission member 500 rotating along the third direction, the transmission member 500 abuts against the side of the trip armature 300, and the first surface 410 of the indicator member 400 is located at the circuit breaker. 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 along the third direction under the action of the spring 600. The first end of the transmission member 500 drives the indicator 400 to rotate along the first direction, so that the first surface 410 extends out of the circuit breaker housing 100, and at the same time, the second end 520 of the transmission member 500 rotates to the front of the trip armature 300 to limit the trip armature 300 from resetting to the first state. The present application proposes a short-circuit protection indication mechanism for a miniature circuit breaker. When the circuit breaker is short-circuited and the attraction core 200 causes the tripping armature 300 to actuate, the transmission member 500 is used to block the tripping armature 300, so that the tripping armature 300 cannot be reset, thereby achieving the situation that the circuit breaker cannot be connected, and the normal connection and disconnection operation can only be performed after manual reset, thereby ensuring safety; the transmission member 500 actuates and simultaneously drives the indication member 400 to actuate, thereby realizing the short-circuit protection indication function; the short-circuit protection indication mechanism for the miniature circuit breaker of the present application has a simple structure, a small number of required parts, stable and reliable operation, thereby improving the safety of the miniature circuit breaker, and at the same time having the short-circuit protection indication function, thereby facilitating line maintenance and troubleshooting.
[0029] In some embodiments of the present application, Figure 4As shown, the trip armature 300 has an adsorption surface 310 and a first hinge ring 320. The trip armature 300 is rotatably arranged in the circuit breaker housing 100 through the first hinge ring 320, and at least part of the adsorption surface 310 faces the adsorption iron core 200. The trip armature 300 is hingedly arranged inside the circuit breaker housing 100, and is limited by a limiting structure in the circuit breaker housing 100 so that it can only rotate within a certain range.
[0030] In some embodiments of the present application, Figure 6 As shown, a mounting cylinder 530 is provided in the middle of the transmission member 500, and the spring 600 is installed in the mounting cylinder 530. Further, the spring 600 is preferably a torsion spring, which can ensure a small volume and can conveniently drive the transmission member 500 to rotate.
[0031] In some embodiments of the present application, a warning mark is provided on the first surface 410 of the indicator 400, so that the operator can more easily notice the indication of the activation of the short circuit protection. Further, the warning mark can be a red picture.
[0032] In some embodiments of the present application, Figure 5 As shown, a first side 411 and a second side 413 are provided on the first surface 410 of the indicator 400, 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 along the third direction, the first end 510 of the transmission member 500 pushes the first side 411, the indicator 400 rotates along the first direction, and the first side 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 along the second direction, and the first side 410 returns to the circuit breaker housing 100, wherein the first direction and the second direction are opposite directions to each other.
[0033] In some embodiments of the present application, Figure 5 As shown, a reset protrusion 412 is also provided on the indicator 400. When the indicator 400 rotates along the second direction, the reset protrusion 412 pushes the first end 510 of the transmission member 500 to reset the transmission member 500 along the fourth direction, wherein the third direction and the fourth direction are opposite directions to each other.
[0034] In some embodiments of the present application, an elastic member is provided on the trip armature 300 , and after the transmission member 500 is rotated and reset along the fourth direction, the trip armature 300 is reset to the first state under the elastic force of the elastic member.
[0035] In some embodiments of the present application, a second hinge ring 420 is provided on the indicator 400 , and the indicator 400 is rotatably disposed in the circuit breaker housing 100 through the second hinge ring 420 .
[0036] The working mode of the short-circuit protection indicator mechanism of the miniature circuit breaker of the present application is as follows:
[0037] Normal working state of circuit breaker: Figure 1 As shown, when the circuit breaker is in normal working state, the trip armature 300 is in the first state, the second end 520 of the transmission member 500 is slightly placed on the side of the trip armature 300 under the action of the spring 600, and the first surface 410 of the indicator 400 is inside the circuit breaker housing 100 and does not extend out of the panel of the circuit breaker, 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: Figure 2 and Figure 3 As shown, when the circuit breaker is subjected to a short-circuit current, the adsorption core 200 is energized to generate a magnetic field, and the adsorption core 200 adsorbs the trip armature 300, so that the trip armature 300 enters the second state, and the trip armature 300 leaves 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, restricting the trip armature 300 from resetting when the circuit breaker is tripped and disconnected, and the first end 510 of the transmission member 500 pushes the first side 411 of the indicator 400, so that the first surface 410 of the indicator 400 extends out of the panel of the circuit breaker to perform an indication function.
[0039] Release the alarm state: When the circuit breaker is in the short circuit indication state, after the operator eliminates the fault, he only needs to press the second side 413 of the indicator 400 to reset 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 member 500, so that the transmission member 500 overcomes the elastic force of the spring 600 and rotates, and the second end 520 of the transmission member 500 returns to the side of the trip armature 300. At this time, the trip armature 300 is not restricted by the transmission member 500 and resets to the first state, and the circuit breaker can be normally connected and disconnected.
[0040] It can be understood that the above embodiments only express the preferred implementation methods of the present application, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present application; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present application, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the present application should fall within the scope of the claims of the present application.
Claims
1. A short-circuit protection indication mechanism for a miniature circuit breaker, comprising a circuit breaker housing (100), wherein an adsorption iron core (200) and a trip armature (300) are arranged in the circuit breaker housing (100), wherein the adsorption iron core (200) generates a magnetic field to adsorb the trip armature (300) when the circuit breaker is short-circuited, and the trip armature (300) has a first state away from the adsorption iron core (200) and a second state adsorbed by the adsorption iron core (200); characterized in that: The short-circuit protection indicating mechanism comprises an indicating member (400), a transmission member (500) and a spring (600); the indicating member (400) is rotatably arranged on the circuit breaker housing (100); a first surface (410) is arranged on the indicating member (400); the first surface (410) is normally located inside the circuit breaker housing (100); when the indicating member (400) rotates in a first direction, at least a portion of the first surface (410) extends out of the circuit breaker housing (100); the transmission member (500) is arranged on the indicating member (400); 0) is movably mounted in the circuit breaker housing (100), the first end (510) of the transmission member (500) is in contact with the indicator member (400), the second end (520) of the transmission member (500) is in contact with the trip armature (300), the spring (600) is arranged on the transmission member (500) and generates an elastic force driving the transmission member (500) to rotate along a third direction, and when the transmission member (500) rotates along the third direction, it drives the indicator member (400) to rotate along the first direction; Wherein, when the trip armature (300) is in the first state, the trip armature (300) is on a path where the transmission member (500) rotates along a third direction, the transmission member (500) abuts against a side edge 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 along the third direction under the action of the spring (600). The first end (510) of the transmission member (500) drives the indicator member (400) to rotate along the first direction, so that the first surface (410) extends out of the circuit breaker housing (100), and at the same time, the second end (520) of the transmission member (500) rotates to the front of the trip armature (300) to limit the trip armature (300) from resetting to the first state.
2. The short-circuit protection indicator mechanism of a miniature circuit breaker 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 arranged in the circuit breaker housing (100) via the first hinge ring (320), with at least a portion of the adsorption surface (310) facing the adsorption iron core (200).
3. The short-circuit protection indicator mechanism of a miniature circuit breaker according to claim 1, characterized in that: A mounting tube (530) is provided in the middle of the transmission member (500), and the spring (600) is mounted in the mounting tube (530).
4. The short-circuit protection indicator 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 indicator mechanism for a miniature circuit breaker according to claim 1, characterized in that: A warning mark is provided on the first surface (410) of the indicator (400).
6. The short-circuit protection indicator mechanism for a miniature circuit breaker according to claim 1, characterized in that: A first side (411) and a second side (413) are provided on the first surface (410) of the indicating member (400), 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) is in contact with the first side (411); When the transmission member rotates along the third direction, the first end (510) of the transmission member (500) pushes the first edge (411), the indicating member (400) rotates along the first direction, and the first surface (410) and the second edge (413) extend out of the circuit breaker housing (100); when the second edge (413) is pressed, the indicating member (400) rotates along the second direction, and the first surface (410) returns to the inside of the circuit breaker housing (100), wherein the first direction and the second direction are opposite directions to each other.
7. The short-circuit protection indicator mechanism for a miniature circuit breaker according to claim 6, characterized in that: The indicator member (400) is also provided with a reset protrusion (412). When the indicator member (400) rotates in the second direction, the reset protrusion (412) pushes the first end (510) of the transmission member (500) to reset the transmission member (500) by rotating in the fourth direction, wherein the third direction and the fourth direction are opposite directions to each other.
8. The short-circuit protection indicator mechanism for a miniature circuit breaker according to claim 7, characterized in that: An elastic member is provided on the tripping armature (300), and after the transmission member (500) is rotated and reset in the fourth direction, the tripping armature (300) is reset to the first state under the elastic force of the elastic member.
9. The short-circuit protection indicator 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 arranged in the circuit breaker housing (100) via the second hinge ring (420).