Leakage indication mechanism and switch device

Abstract

A kind of electric leakage indicating mechanism and switch equipment, it includes: shell;Electric leakage indicating piece, and the bottom of electric leakage indicating piece is equipped with first lug and second lug, and the first lug and second lug staggered arrangement, and respectively located at both ends of electric leakage indicating piece;Electric leakage tripping mechanism, it includes contact support and rotatable setting on contact support on trip and lock, the first protrusion formed by the upper end of trip extending upwards, the first protrusion is located in the side of first lug, and constitutes the linkage of electric leakage indicating piece and trip, the second protrusion formed by the upper end of contact support extending upwards, the second protrusion is located in the side of second lug, and constitutes the linkage of electric leakage indicating piece and contact support, and the side of first lug and first protrusion cooperation with the side of second lug and second protrusion cooperation is arranged towards.The overall structure is simple, stable and reliable in performance, while installation is convenient, and indication is accurate.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a leakage current indicating mechanism and a switching device. Background Technology

[0002] Existing residual current operated circuit breakers (RCBOs) mainly determine whether there is leakage current in the line by whether the leakage electrode handle is in the closed or open state, so as to repair the line. However, there are many drawbacks to simply indicating the state of the handle. Moreover, serious leakage faults can even threaten personal safety and lead to adverse consequences. Therefore, the judgment of leakage faults is particularly important.

[0003] Relying on the position of the handle to determine whether there is a leakage is unreliable.

[0004] 1. When troubleshooting a circuit fault, if the leakage electrode handle is manually removed, it is impossible to confirm whether there is a leakage fault in the line. Therefore, it is impossible to confirm whether the circuit breaker tripped due to the leakage fault. Moreover, in many cases, the leakage fault in the line is not continuous. If the leakage electrode handle is manually closed after the intermittent leakage fault occurs, the leakage problem in the line can easily be overlooked, and secondary leakage can threaten personal safety.

[0005] 2. In special circumstances, the leakage electrode handle may not have come off due to a line leakage. In such cases, relying solely on the handle for indication is insufficient to accurately determine the cause of the fault, which greatly complicates troubleshooting for line problems or circuit breaker issues.

[0006] To avoid unreliability caused by leakage current indicator handles, some existing circuit breakers incorporate a leakage current indication mechanism. This mechanism utilizes the action of the leakage current trip unit to activate the leakage current indicator, thus indicating leakage current. For example, Chinese patent CN222365540U discloses a miniature circuit breaker that uses a leakage current indicator; the lever of the leakage current trip unit rotates the indicator to indicate leakage current. Simplifying the leakage current side mechanism of the circuit breaker is crucial for improving overall product reliability. Too many parts increase internal potential failure points, necessitating a redesign of the leakage current indication mechanism. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a leakage current indicating mechanism and a switching device.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A leakage current indicating mechanism, comprising: The housing has an arc-shaped mounting groove on its upper side and an indicator hole corresponding to the arc-shaped mounting groove on its upper surface. The leakage current indicator is arc-shaped and can slide in the arc-shaped mounting groove under the action of external force. The bottom of the leakage current indicator is provided with a first protrusion and a second protrusion, which are staggered and located at both ends of the leakage current indicator. A leakage current tripping mechanism is disposed within the housing. It includes a contact support and a tripping buckle and a locking buckle rotatably disposed on the contact support. The upper end of the tripping buckle extends upward to form a first protrusion. The first protrusion is located on one side of a first protrusion and constitutes a linkage between the leakage current indicator and the tripping buckle. The upper end of the contact support extends upward to form a second protrusion. The second protrusion is located on one side of a second protrusion and constitutes a linkage between the leakage current indicator and the contact support. The side of the first protrusion that engages with the first protrusion and the side of the second protrusion that engages with the second protrusion are arranged facing each other.

[0009] The tripping indicator is provided with elastic arms on both sides, and a limiting groove is formed on the outer side of the elastic arm. The arc-shaped mounting groove is provided with a limiting protrusion that cooperates with the limiting groove to limit the position.

[0010] The housing includes a middle housing and a side cover, which cooperate with each other to form an arc-shaped mounting groove.

[0011] A limiting block is provided at the end of the arc-shaped mounting groove on one side of the side cover.

[0012] A switching device comprising: The housing includes an intermediate housing and side covers disposed on both sides of the intermediate housing. The two sides of the intermediate housing respectively form a first space for accommodating a leakage current protection module and a second space for accommodating a circuit breaker module. The leakage current indication mechanism is provided in the first space.

[0013] The operating mechanism of the circuit breaker module and the leakage tripping mechanism of the leakage protection module are linked together by a pin.

[0014] The upper end of the housing is provided with a leakage electrode handle and an operating handle. The leakage electrode handle is linked to the leakage tripping mechanism via a first connecting rod, and the operating handle is linked to the operating mechanism via a second connecting rod. A pin is provided between the leakage electrode handle and the operating handle.

[0015] The beneficial effects of this utility model are as follows: By utilizing the trip latch and contact support to drive the leakage current indicator, the working status of the leakage current indicator can be indicated. During operation, the handle drives the trip latch and the latch to engage, and drives the contact support to perform a closing action. The contact support drives the leakage current indicator to slide relative to each other, thereby achieving its closing indication. When leakage occurs, the leakage current trip device drives the latch to act, the latch and the trip latch to unlock, and the trip latch synchronously drives the leakage current indicator to act, thereby achieving leakage fault indication. Its overall structure is simple, its performance is stable and reliable, and it is also easy to install and provides accurate indication. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0017] Figure 3 This is a partially enlarged schematic diagram of the leakage current indicator of this utility model.

[0018] Figure 4 This is a schematic diagram showing the cooperation between the leakage current indicator and the leakage current tripping mechanism of this utility model.

[0019] Figure 5 This is a schematic diagram of the leakage current indicator of this utility model.

[0020] Figure 6 This is a partial schematic diagram of the arc-shaped mounting groove of this utility model.

[0021] Figure 7 This is a structural schematic diagram of the present invention (shell omitted). Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Please see Figure 1 and Figure 2 This utility model discloses a leakage current indicating mechanism, which is mainly used for leakage current indication on the leakage side of a circuit breaker. It includes an arc-shaped mounting groove on the housing, a leakage current indicator that can be slidably installed in the arc-shaped mounting groove, and a leakage current tripping mechanism for driving the relative movement of the leakage current indicator.

[0025] By uniquely designing the trip lever and contact support of the leakage current tripping mechanism, the leakage current indicator is activated separately, eliminating the need for an additional lever to activate the leakage current indicator, resulting in a more compact and simple structure with high reliability.

[0026] The housing 100 has an arc-shaped mounting groove 120 on its upper side and an indicator hole 110 corresponding to the arc-shaped mounting groove 120 on its upper surface. The housing is composed of a middle housing and a side cover. The corresponding arc-shaped mounting grooves are arranged on the middle housing and the side cover. The two together restrict the leakage current indicator, so that the leakage current indicator can slide relatively in the arc-shaped mounting groove. Both ends of the indicator are supported by the arc-shaped mounting groove.

[0027] like Figure 3 As shown, the leakage current indicator 200 is arc-shaped and can slide within the arc-shaped mounting groove 120 under external force. The arc shape corresponds to the curvature of the housing surface, allowing for better switching of the line of sight. Since the leakage current circuit breaker is installed at a high position, the arc-shaped indicator is more suitable for observation under normal conditions. The bottom of the leakage current indicator 200 is provided with a first protrusion 210 and a second protrusion 220, which are not coaxially arranged and are located at both ends of the leakage current indicator 200. The use of two independently arranged first and second protrusions better meets the driving requirements of the arc-shaped path and can also be normally supported by the contacts and driven by the action of the tripping.

[0028] like Figure 4 As shown, the leakage current tripping mechanism 300 is disposed within the housing 100. It includes a contact support 310 and a tripping buckle 320 and a locking buckle 330 rotatably disposed on the contact support 310. The upper end of the tripping buckle 320 extends upward to form a first protrusion 321. The first protrusion 321 is located on one side of the first protrusion 210 and constitutes a linkage between the leakage current indicator 200 and the tripping buckle 320. The upper end of the contact support 310 extends upward to form a second protrusion 311. The second protrusion 311 is located on one side of the second protrusion 220 and constitutes a linkage between the leakage current indicator 200 and the contact support 310. The side of the first protrusion 210 that engages with the first protrusion 321 and the side of the second protrusion 220 that engages with the second protrusion 311 are arranged facing each other.

[0029] The upward-extending protrusion is directly supported by the jumper and contact. When it rotates, the protrusion can engage with the corresponding protrusion of the leakage current indicator and drive it to move synchronously. The staggered design of the protrusion means that the two protrusions are staggered along the moving direction of the leakage current indicator, so that the corresponding protrusion engages with the corresponding protrusion. At the same time, since the movements of the two drive the leakage current indicator to move in opposite directions, the mating surfaces of the two protrusions and the protrusions face opposite directions.

[0030] like Figure 5As shown, the leakage current indicator 200 has elastic arms 230 on both sides. A limiting groove 231 is formed on the outer side of each elastic arm 230. The arc-shaped mounting groove 120 is correspondingly provided with a limiting protrusion 121 that engages with the limiting groove 231. The elastic arm serves to support the leakage current indicator and, through its elastic deformation force, allows for switching between different settings. When the leakage current indicator moves, the suspended end of the elastic arm approaches the limiting protrusion, causing it to deform inward under force, thus allowing the limiting protrusion to enter the limiting groove, thereby indicating the setting. The cooperation of both also prevents the leakage current indicator from accidentally resetting.

[0031] like Figure 6 As shown, a limiting block 122 is provided at the end of the arc-shaped mounting groove on one side of the side cover. This limiting block is used to limit the maximum movement distance of the leakage current indicator.

[0032] like Figure 1 and Figure 7 As shown, this utility model also discloses a switching device, which includes: The housing 100 includes an intermediate housing and side covers disposed on both sides of the intermediate housing. The two sides of the intermediate housing respectively form a first space for accommodating a leakage current protection module and a second space for accommodating a circuit breaker module. The leakage current indication mechanism is provided in the first space.

[0033] The operating mechanism 400 of the circuit breaker module and the leakage tripping mechanism 300 of the leakage protection module are linked together by a pin 500. The pin 500 passes through the intermediate housing, so that the action of the leakage protection module can directly act on the operating mechanism of the circuit breaker module to trip it.

[0034] The upper end of the housing is provided with a leakage electrode handle 700 and an operating handle 800. The leakage electrode handle 700 is linked to the leakage tripping mechanism 300 through a first connecting rod, and the operating handle 800 is linked to the operating mechanism 400 through a second connecting rod. A pin 600 is provided between the leakage electrode handle 700 and the operating handle 800, and the pin shaft enables the two to be linked, so that the circuit breaker can be closed or opened simultaneously by operating either handle.

[0035] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. An electric leakage indicating mechanism characterized by: It includes: The housing (100) has an arc-shaped mounting groove (120) on its upper side and an indicator hole (110) corresponding to the arc-shaped mounting groove (120) on its upper surface. The leakage current indicator (200) is arc-shaped and can slide in the arc-shaped mounting groove (120) under the action of external force. The bottom of the leakage current indicator (200) is provided with a first protrusion (210) and a second protrusion (220). The first protrusion (210) and the second protrusion (220) are not coaxial and are located at both ends of the leakage current indicator (200). A leakage tripping mechanism (300) is disposed within the housing (100). It includes a contact support (310) and a tripping buckle (320) and a locking buckle (330) rotatably disposed on the contact support (310). The upper end of the tripping buckle (320) extends upward to form a first protrusion (321). The first protrusion (321) is located on one side of the first protrusion (210) and constitutes a linkage between the leakage indicator (200) and the tripping buckle (320). The upper end of the contact support (310) extends upward to form a second protrusion (311). The second protrusion (311) is located on one side of the second protrusion (220) and constitutes a linkage between the leakage indicator (200) and the contact support (310). The side of the first protrusion (210) that cooperates with the first protrusion (321) and the side of the second protrusion (220) that cooperates with the second protrusion (311) are arranged facing each other.

2. The electric leakage indicating mechanism according to claim 1, wherein: The leakage current indicator (200) is provided with elastic arms (230) on both sides. A limiting groove (231) is formed on the outer side of the elastic arm (230). The arc-shaped mounting groove (120) is provided with a limiting protrusion (121) that forms a limiting fit with the limiting groove (231).

3. The leakage current indicating mechanism according to claim 1, characterized in that: The housing (100) includes an intermediate housing and a side cover, which cooperate with each other to form an arc-shaped mounting groove (120).

4. A leakage current indicating mechanism according to claim 3, characterized in that: A limiting block (122) is provided at the end of the arc-shaped mounting groove on one side of the side cover.

5. A switching device, characterized in that: It includes: The housing (100) includes an intermediate housing and side covers disposed on both sides of the intermediate housing, and the two sides of the intermediate housing respectively form a first space for accommodating a leakage current protection module and a second space for accommodating a circuit breaker module, wherein the first space is provided with a leakage current indication mechanism as described in any one of claims 1 to 4.

6. A switching device according to claim 5, characterized in that: The operating mechanism (400) of the circuit breaker module and the leakage tripping mechanism (300) of the leakage protection module are linked together by a pin (500).

7. A switching device according to claim 5, characterized in that: The upper end of the housing is provided with a leakage electrode handle (700) and an operating handle (800). The leakage electrode handle (700) is linked to the leakage tripping mechanism (300) via a first connecting rod. The operating handle (800) is linked to the operating mechanism (400) via a second connecting rod. A pin (600) is provided between the leakage electrode handle (700) and the operating handle (800).

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