Shunt indication mechanism and circuit breaker
By designing a linked excitation splitting coil, restriction part and indicator part, the problems of large size and large space occupancy of existing circuit breakers are solved, and a miniaturized circuit breaker design is realized, with clear display of closing and excitation tripping.
Patent Information
- Application Number
- CN202422378765.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The parts of the existing circuit breakers have large sizes and take up more space, which is not suitable for miniaturization scenarios.
A diversion indicator mechanism is designed, including a diversion coil, a restrictor and an indicator that is sequentially linked. In the closing state, the two ends of the restrictor are in conflict with the indicator and the base respectively. The torsion spring is used to keep stationary. There is no need for additional limiting features between the indicator and the limiting member. The diversion trip indication is performed through the diversion coil driving action.
The indicators and limiting parts are smaller in size, save space occupation, and are stationary in the closed state, and only act when the split excitation is tripped, displaying the split excitation tripped state to meet the needs of miniaturization.
Smart Images
Figure CN223218227U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a shunt indicating mechanism and a circuit breaker. Background Art
[0002] A circuit breaker's shunt release is primarily used for remote tripping, protecting the generator and power grid, and enabling remote disconnection of the circuit breaker. Therefore, circuit breakers are typically equipped with a shunt indication function to indicate that the shunt trip, when triggered by the shunt release, indicates that the trip was a shunt trip, not some other type of trip. Existing circuit breakers have numerous shunt indication mechanisms, resulting in larger components and occupying a large volume, making them unsuitable for miniaturization. Utility Model Content
[0003] The purpose of this application is to address the deficiencies in the above-mentioned prior art and provide a shunt indicating mechanism and a circuit breaker, which have small parts, can save space, and meet the needs of miniaturization scenarios.
[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:
[0005] In one aspect of an embodiment of the present application, a shunt indication mechanism is provided, comprising a shunt coil, a limiting member and an indicating member arranged in a base and linked in sequence, wherein the indicating member has an indicating area exposed from the base; in a closed state, one end of the limiting member contacts the indicating member and the other end contacts the base, so that the indicating member and the limiting member remain stationary.
[0006] Optionally, a first rotating shaft, a second rotating shaft and a mechanism seat are respectively provided in the base, the indicator and the mechanism seat are connected to the base via the first rotating shaft, and the limiting member is connected to the base via the second rotating shaft; a torsion spring is sleeved on the first rotating shaft, and two ends of the torsion spring are respectively connected to the indicator and the limiting member; a lap joint surface is provided on the limiting member;
[0007] When the switch is closed, the mechanism seat drives the indicator to rotate around the first rotating shaft. After the indicator rotates by a preset angle, the limiting member is driven to rotate around the second rotating shaft by the torsion spring until the indicator contacts the overlapping surface of the limiting member.
[0008] Optionally, a rib is provided in the base, and in the closed state, the indicator contacts the limiting member, the indicator is kept stationary by the limiting member, and the limiting member is kept stationary by interfering with the rib on the base.
[0009] Optionally, the center distance between the first rotating shaft and the second rotating shaft is smaller than a preset center distance; and / or the distance between the overlapping surface and the second rotating shaft is smaller than a preset distance.
[0010] Optionally, the shunt coil is provided with a push rod. When the shunt is tripped, the shunt coil works and the push rod moves toward the limiting part to push the overlapping surface of the limiting part to separate from the indicator part, and drives the indicator part to rotate through the torsion spring to complete the shunt indication.
[0011] Optionally, a first contact surface is formed on the indicator member, and a second contact surface is formed on the limiting member; in an open state, the first contact surface contacts the second contact surface to keep the indicator member and the limiting member stationary.
[0012] Optionally, the limiting member has at least one of the following settings:
[0013] The overlapping surface of the limiting member is an arc surface;
[0014] The limiting member has an end facing the indicating member and is chamfered so that the torsion spring moves along the chamfer to a fixed position.
[0015] Optionally, the indicator has at least one of the following settings:
[0016] The indicator is provided with an undercut groove, and one end of the torsion spring is arranged in the undercut groove;
[0017] A boss is formed on the indicator, and the indicator cooperates with the mechanism seat via the boss.
[0018] Optionally, the movement direction of the push rod is consistent with the movement direction of the limiting member.
[0019] In one aspect of an embodiment of the present application, a circuit breaker is provided, comprising a base and a shunt indication mechanism disposed in the base.
[0020] The beneficial effects of this application include:
[0021] The present application provides a shunt indicator mechanism and a circuit breaker, wherein the two ends of the limiting member respectively interfere with the indicator and the base, so that the limiting member is positioned and kept stationary by the base, and the indicator is kept stationary by the force of the limiting member, and both the indicator and the limiting member can remain stationary; there is no need to set additional limit matching features between the indicator and the limiting member, so the size of the indicator and the limiting member can be smaller to save overall space. When the limiting member and the indicator remain stationary in the closed state, when the switch is manually or short-circuited or overloaded, the limiting member and the indicator do not operate; only when the shunt is tripped, the shunt coil is used to activate the limiting member and the indicator, thereby completing the shunt trip indication, and the position of the indicator is used to show whether it is a shunt trip or other form of tripping. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 A schematic diagram of the open state of the shunt indicator mechanism provided in an embodiment of the present application;
[0024] Figure 2 A partial schematic diagram of the shunt indicator mechanism in the open state provided in an embodiment of the present application;
[0025] Figure 3 A schematic diagram of the closing process of the shunt indication mechanism provided in an embodiment of the present application;
[0026] Figure 4 A partial schematic diagram of the closing process of the shunt indication mechanism provided in an embodiment of the present application;
[0027] Figure 5 A schematic diagram of the closing state of the shunt indicator mechanism provided in an embodiment of the present application;
[0028] Figure 6 A partial schematic diagram of the closing state of the shunt indication mechanism provided in an embodiment of the present application;
[0029] Figure 7 This is one of the schematic diagrams of the limiting member structure of the shunt indicator mechanism provided in an embodiment of the present application;
[0030] Figure 8 This is a second schematic diagram of the limiting member structure of the shunt indicator mechanism provided in an embodiment of the present application;
[0031] Figure 9This is a schematic diagram of the indicator structure of the shunt indicator mechanism provided in an embodiment of the present application.
[0032] Icon: 10-base; 10a-rib position; 20-shunt indicating mechanism; 21-shunt coil; 22-push rod; 23-limiting member; 230-second rotating shaft; 231-lap joint; 232-chamfer; 233-second contact surface; 24-indicating member; 240-first rotating shaft; 241-torsion spring; 242-boss; 243-undercut groove; 244-first contact surface; 31-mechanism seat. DETAILED DESCRIPTION
[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application as claimed, but merely represents selected embodiments of the present application. It should be noted that, unless there is a conflict, the various features of the embodiments of the present application may be combined with each other, and the combined embodiments are still within the scope of protection of the present application.
[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0036] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0037] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0038] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0039] In one aspect of the embodiment of this application, please refer to Figure 1 , provides a shunt indicating mechanism 20, including a shunt coil 21, a limiting member 23 and an indicating member 24 arranged in a base 10 and linked in sequence, the indicating member 24 having an indicating area exposed from the base 10; Figure 5 、 Figure 6 One end of the limiting member 23 abuts against the indicating member 24 and the other end abuts against the base 10 so that the indicating member 24 and the limiting member 23 remain stationary.
[0040] When the shunt trip is tripped, Figure 1 、 Figure 2 As shown, the shunt coil 21 is energized to generate electromagnetic force, and the shunt coil 21 is provided with a push rod 22. Under the action of the electromagnetic force, the push rod 22 moves toward Figure 1 Pushing the right side of the restraining member 23 activates the indicator 24. When the indicator 24 activates, the indicator area on the indicator 24 rotates to the inspection window of the base 10, displaying different colors to indicate the current state of the circuit breaker. For example, when the red indicator area rotates to the inspection window and is exposed, it indicates that the circuit breaker is currently in the shunt trip state, thus providing shunt trip indication.
[0041] In addition, the shunt coil 21 of the present application is a solenoid coil, and its push rod 22 is directed toward Figure 1 The right side action sets the force point of the limiting member 23 to the direction Figure 1 On the right side, when the push rod 22 moves to push the limiting member 23, the movement directions of the push rod 22 and the limiting member 23 are consistent. Compared with the existing shunt indicating mechanism 20, which is suitable for the snap-type coil system but has difficulty in layout when applied to the solenoid coil system, the setting of this application can meet the layout plan of the solenoid coil to save space.
[0042] More importantly, when the switch is closed, Figure 5 、 Figure 6As shown, the two ends of the limiting member 23 respectively interfere with the indicator 24 and the base 10. In this way, the limiting member 23 is positioned and kept stationary by the base 10, and the indicator 24 is kept stationary by the force of the limiting member 23. Both the indicator 24 and the limiting member 23 can remain stationary. No additional limiting matching features are required between the indicator 24 and the limiting member 23. Therefore, the size of the indicator 24 and the limiting member 23 can be smaller to save overall space. When the limiting member 23 and the indicator 24 remain stationary in the closed state, when the circuit breaker is manually or short-circuited or overloaded, the limiting member 23 and the indicator 24 do not operate. Only when the shunt is tripped, the shunt coil 21 is used to activate the limiting member 23 and the indicator 24, thereby completing the shunt trip indication. The position of the indicator 24 is used to show whether it is a shunt trip or other form of tripping.
[0043] Specifically, a first rotating shaft 240, a second rotating shaft 230 and a mechanism seat 31 are respectively provided in the base 10, the indicator 24 and the mechanism seat 31 are connected to the base 10 through the first rotating shaft 240, and the limiting member 23 is connected to the base 10 through the second rotating shaft 230; a torsion spring 241 is sleeved on the first rotating shaft 240, and the two ends of the torsion spring 241 are respectively connected to the indicator 24 and the limiting member 23; a lap joint surface 231 is formed on one end of the limiting member 23 facing the indicator 24.
[0044] When closing the circuit breaker, the mechanism seat 31 drives the indicator 24 to rotate around the first rotating shaft 240. After the indicator 24 rotates to a preset angle, the limiting member 23 is driven to rotate around the second rotating shaft 230 through the torsion spring 241 until the indicator 24 contacts the overlapping surface 231 of the limiting member 23, thereby forming a conflict between the indicator 24 and the limiting member 23.
[0045] The indicator 24 and the mechanism base 31 are coaxially arranged on the first rotating shaft 240 to be connected to the base 10 through the first rotating shaft 240 ; the limiting member 23 is arranged in the base 10 through the second rotating shaft 230 .
[0046] During the closing process, if Figure 3 、 Figure 4 As shown, the operating mechanism is driven to make the mechanism seat 31 drive the indicator 24 to rotate clockwise around the first rotating shaft 240. After the indicator 24 rotates to a preset angle, the limiting member 23 is driven to rotate clockwise around the second rotating shaft 230 by the torsion spring 241 until the indicator 24 contacts the overlapping surface 231 of the limiting member 23; and the other end of the limiting member 23 contacts the base 10, so that the indicator 24 and the limiting member 23 can be kept in a stationary state; when manual or short-circuit or overload tripping is performed, the indicator 24 is kept stationary by the force of the limiting member 23, and the limiting member 23 contacts the base 10 and remains stationary, and the indicator 24 cannot move, avoiding the tripping display of non-shunt tripping. Only when the shunt tripping is performed by the shunt coil 21, the indicator 24 can perform the shunt tripping display.
[0047] Specifically, a rib 10a is provided in the base 10; in the closed state, Figure 5 、 Figure 6 As shown, the indicator 24 contacts the limiting member 23, and the indicator 24 is kept stationary by the force applied by the limiting member 23, while the limiting member 23 can be kept stationary by interfering with the rib 10a on the base 10. There is no need to cut a groove on the indicator 24 to limit the movement of the limiting member 23, thereby reducing the size of the indicator 24 and the limiting member 23.
[0048] When performing shunt tripping, if Figure 1 、 Figure 2 As shown, the shunt coil 21 works to drive the push rod 22 to move toward the limiting member 23. The push rod 22 pushes the overlapping surface 231 of the limiting member 23 to separate from the indicator 24, and drives the indicator 24 to rotate through the torsion spring 241 to complete the shunt indication.
[0049] When the push rod 22 pushes the limiting member 23 to operate, the limiting member 23 rotates counterclockwise around the second rotating shaft 230 to separate the overlapping surface 231 of the limiting member 23 from the indicator member 24; the indicator member 24 rotates counterclockwise around the first rotating shaft 240 under the action of the torsion spring 241 to expose the shunt display area (red) at the inspection window of the base 10, indicating the shunt tripping status.
[0050] For example, a first contact surface 244 is formed on the indicator 24, and a second contact surface 233 is formed on the limiting member 23. In the open state, the second contact surface 233 of the limiting member 23 contacts the first contact surface 244 of the indicator 24 to keep both stationary.
[0051] The torsion spring 241 between the indicator 24 and the limiting member 23 has its two ends connected to the indicator 24 and the limiting member 23 respectively. The torsion spring 241 acts on the indicator 24 and the limiting member 23 at the same time to form an interaction force, providing counterclockwise and clockwise forces to the indicator 24 and the limiting member 23 respectively, driving the indicator 24 and the limiting member 23 to move and close and reset.
[0052] Furthermore, if Figure 7 、 Figure 8 As shown, the overlapping surface 231 of the limiting member 23 can be an arc surface, so that the arc-shaped overlapping surface 231 and the indicator member 24 overlap more easily to enter a locked state, which can prevent the indicator member 24 from rotating and prevent other forms of non-shunt tripping from causing the indicator member 24 to rotate.
[0053] The distance between the overlapping surface 231 of the limiting member 23 and the second rotating shaft 230 is smaller than the preset distance, that is, the rotation radius and the movement arc of the overlapping surface 231 around the second rotating shaft 230 are small, so the size of the limiting member 23 and the indicator member 24 can be set smaller to achieve space saving.
[0054] In addition, when the center distance between the first rotating shaft 240 and the second rotating shaft 230 is reduced and is smaller than the preset center distance, the sizes of the indicator 24 and the limiting member 23 can also be reduced, thereby achieving the purpose of small parts and space saving.
[0055] The end of the limiting member 23 facing the indicator member 24 is further formed with a chamfer 232 , so that when the limiting member 23 and the torsion spring 241 are pre-assembled into place, the torsion spring 241 will move along the chamfer 232 to a fixed position after the base 10 is buckled.
[0056] For the indicator 24, if Figure 9 As shown, an undercut groove 243 is provided thereon, and one end of the torsion spring 241 is disposed in the undercut groove 243 to prevent the torsion spring 241 from sliding off the indicator 24 .
[0057] A boss 242 is also formed on the indicator member 24 on the mating surface with the mechanism seat. For example, the boss 242 protrudes 0.2 mm. The indicator member 24 cooperates with the mechanism seat 31 through the boss 242, which can reduce the friction between the indicator member 24 and the mechanism seat 31 and prevent the indicator member 24 from not moving and failing to complete the shunt indication.
[0058] On this basis, an embodiment of the present application further discloses a circuit breaker, including a base 10 , in which a shunt indicating mechanism 20 as described above is disposed.
[0059] This circuit breaker includes the same structure and beneficial effects as the shunt indicator mechanism 20 in the aforementioned embodiment. The structure and beneficial effects of the shunt indicator mechanism 20 have been described in detail in the aforementioned embodiment and will not be repeated here.
[0060] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A shunt indicating mechanism, characterized in that: The invention comprises a shunt coil (21), a limiting member (23) and an indicating member (24) which are arranged in a base (10) and are linked in sequence, wherein the indicating member (24) has an indicating area exposed from the base (10); in a closed state, one end of the limiting member (23) contacts the indicating member (24) and the other end contacts the base (10), so that the indicating member (24) and the limiting member (23) remain stationary.
2. The shunt indicating mechanism according to claim 1, characterized in that: A first rotating shaft (240), a second rotating shaft (230) and a mechanism seat (31) are respectively provided in the base (10); the indicator (24) and the mechanism seat (31) are connected to the base (10) via the first rotating shaft (240); the limiting member (23) is connected to the base (10) via the second rotating shaft (230); a torsion spring (241) is sleeved on the first rotating shaft (240); two ends of the torsion spring (241) are respectively connected to the indicator (24) and the limiting member (23); a lap joint surface (231) is provided on the limiting member (23); When the switch is closed, the mechanism seat (31) drives the indicator (24) to rotate around the first rotating shaft (240). After the indicator (24) rotates by a preset angle, the limiting member (23) is driven to rotate around the second rotating shaft (230) through the torsion spring (241) until the indicator (24) contacts the overlapping surface (231) of the limiting member (23).
3. The shunt indicating mechanism according to claim 2, characterized in that: A rib portion (10a) is provided in the base (10); in a closed state, the indicator (24) contacts the limiting member (23); the indicator (24) is kept stationary by the limiting member (23); and the limiting member (23) is kept stationary by contacting the rib portion (10a) on the base (10).
4. The shunt indicating mechanism according to claim 3, characterized in that: The center distance between the first rotating shaft (240) and the second rotating shaft (230) is smaller than a preset center distance; and / or the distance between the overlapping surface (231) and the second rotating shaft (230) is smaller than a preset distance.
5. The shunt indicating mechanism according to claim 2, characterized in that: The shunt coil (21) is provided with a push rod (22). When the shunt is tripped, the shunt coil (21) works, and the push rod (22) moves toward the limiting member (23) to push the overlapping surface (231) of the limiting member (23) to separate from the indicating member (24), and drives the indicating member (24) to rotate through the torsion spring (241) to complete the shunt indication.
6. The shunt indicating mechanism according to claim 5, characterized in that: A first contact surface (244) is formed on the indicator (24), and a second contact surface (233) is formed on the limiting member (23); in an open state, the first contact surface (244) contacts the second contact surface (233) to keep the indicator (24) and the limiting member (23) stationary.
7. The shunt indicating mechanism according to any one of claims 2 to 6, characterized in that: The limiting member (23) has at least one of the following configurations: The overlapping surface (231) of the limiting member (23) is an arc surface; A chamfer (232) is formed on one end of the limiting member (23) facing the indicating member (24), so that the torsion spring (241) moves along the chamfer (232) to a fixed position.
8. The shunt indicating mechanism according to any one of claims 2 to 6, characterized in that: The indicator (24) has at least one of the following configurations: The indicator (24) is provided with an undercut groove (243), and one end of the torsion spring (241) is provided in the undercut groove (243); A boss (242) is formed on the indicator (24), and the indicator (24) cooperates with the mechanism seat (31) via the boss (242).
9. The shunt indicating mechanism according to claim 5 or 6, characterized in that: The movement direction of the push rod (22) is consistent with the movement direction of the limiting member (23).
10. A circuit breaker, characterized in that: The invention comprises a base (10), and a shunt indicating mechanism (20) according to any one of claims 1 to 9, which is arranged in the base (10).