Alarm switch with indication function and circuit breaker equipped with alarm switch

Abstract

The utility model relates to an alarm switch with an indication function and a circuit breaker equipped with the alarm switch, the alarm switch with the indication function comprises an alarm switch shell, and a microswitch, an indication device and a battery which are arranged on the alarm switch shell, and the microswitch, the indication device and the battery form an alarm indication loop. Signal output of the indicating device is realized by controlling on-off of the alarm indicating loop through the microswitch. The circuit breaker comprises a main shell, an operating mechanism and a contact system, the operating mechanism and the contact system are arranged in the main shell, the contact system is switched on or switched off when the operating mechanism acts, the alarm switch with the indication function is arranged in the main shell, and when the circuit breaker is tripped, the operating mechanism drives the microswitch to act, the alarm indication loop is switched on, and the alarm indication loop is switched off. And the indicating device realizes signal output. The utility model has the advantages that when the circuit breaker has a tripping fault, maintenance personnel can conveniently and quickly find the faulted circuit breaker through the indication of the indicating device, the purpose of field indication is achieved, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage circuit breakers, and in particular relates to an alarm switch with an indication function and a circuit breaker equipped with the alarm switch. Background Art

[0002] The alarm switch is an external accessory of the circuit breaker. In the secondary circuit of the circuit breaker, when the circuit breaker fails, the alarm switch provides the current fault indication signal of the circuit breaker to the outside world in a mechanical linkage way. However, this signal is often sent remotely. When the maintenance personnel arrive at the site, they cannot quickly and intuitively find the faulty circuit breaker, especially in insufficient light or when there are a large number of circuit breakers. In view of the existence of the above problems, how to find the faulty circuit breaker economically and quickly and find a solution to the fault has become a new challenge.

[0003] In view of the above-mentioned prior art, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0004] The primary task of the utility model is to provide an alarm switch with an indication function, which realizes on-site indication of a fault signal by adding an indication device, and can facilitate maintenance personnel to quickly and reliably find the faulty circuit breaker.

[0005] Another task of the utility model is to provide a circuit breaker that can quickly indicate a fault and ensure that the above-mentioned effects of the alarm switch with an indication function are fully realized.

[0006] The primary task of the utility model is accomplished in this way: an alarm switch with an indication function includes an alarm switch housing and a micro switch, an indication device and a battery arranged on the alarm switch housing. The micro switch, the indication device and the battery constitute an alarm indication circuit, and the signal output of the indication device is realized by controlling the on and off of the alarm indication circuit through the micro switch.

[0007] Another task of the utility model is accomplished as follows: a circuit breaker includes a main housing and an operating mechanism and a contact system arranged in the main housing. When the operating mechanism is actuated, the contact system is connected or disconnected. An alarm switch with an indication function is arranged in the main housing. When the circuit breaker is tripped, the operating mechanism drives the micro switch to actuate, the alarm indication circuit is connected, and the indication device outputs a signal.

[0008] In another embodiment of the utility model, the main shell includes a base and a middle cover covering the base, a cavity is provided in the middle cover, and the alarm switch is provided in the cavity.

[0009] In another embodiment of the utility model, the operating mechanism includes a tripping lever, and when the circuit breaker is tripped, the tripping lever drives the micro switch to operate.

[0010] In another embodiment of the utility model, it further comprises an upper cover covering the middle cover, an observation window is arranged on the upper cover at a position corresponding to the indicating device, and the indicating device outputs a signal to the outside through the observation window.

[0011] In another embodiment of the utility model, the output signal of the indicating device is a light wave signal and / or a sound wave signal.

[0012] In another embodiment of the utility model, the indicating device includes an indicator light, and the indicator light is located outside the upper cover through the observation window to facilitate external observation.

[0013] In another embodiment of the utility model, the indicating device includes an indicator light, a light guide column is provided on the observation window, the indicator light is located on the inner side of the upper cover, the light emitted by the indicator light is irradiated on the light guide column, and the light guide column outputs a signal to the outside.

[0014] In a further embodiment of the present invention, the battery is a button cell or a dry cell.

[0015] In yet another embodiment of the present invention, the indicator light may be one or a plurality of indicator lights arranged in an array.

[0016] The utility model adds an indicating device to the alarm switch, so that when a circuit breaker trips, maintenance personnel can quickly find the faulty circuit breaker through the indication of the indicating device, thereby achieving the purpose of on-site indication, and the structure is simple and the cost is low. The circuit breaker can ensure the full realization of the above-mentioned effects of the alarm switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the circuit breaker of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the circuit breaker of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the middle cover described in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the alarm switch described in the utility model;

[0021] Figure 5 It is an electrical connection diagram of the alarm indicating circuit described in the utility model. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as within the protection scope of the present invention.

[0023] like Figure 1 As shown, a circuit breaker includes a main housing 2, an operating mechanism 3 and a contact system (not shown in the figure) arranged in the main housing 2, wherein the contact system includes a moving contact and a stationary contact, wherein the moving contact is provided with a moving contact point, and the corresponding stationary contact point is provided with a stationary contact point. The operating mechanism 3 is actuated to drive the moving contact point and the stationary contact point to contact or separate, thereby realizing the connection or disconnection of the contact system.

[0024] like Figure 4 As shown, in order to realize on-site indication of faults, an alarm switch with an indication function is arranged in the main housing 2, and the alarm switch comprises an alarm switch housing 1, and a micro switch 11, an indication device 12 and a battery 13 arranged on the alarm switch housing 1. The micro switch 11, the indication device 12 and the battery 13 are connected in series to form an alarm indication circuit. The alarm indication circuit is controlled by the micro switch 11 to finally realize the signal output of the indication device 12. The alarm indication circuit is as shown in FIG. Figure 5 shown.

[0025] The alarm switch is installed in this way: the main housing 2 includes a base 21 and a middle cover 22 covering the base 21 , a cavity 221 is provided in the middle cover 22 , and the alarm switch is provided in the cavity 221 .

[0026] See Figure 1 Combined with Figure 2 , the alarm switch works as follows: when the circuit breaker is tripped, the operating mechanism 3 drives the micro switch 11 to operate, the alarm indication circuit is connected, and the indication device 12 realizes signal output. Specifically, the operating mechanism 3 includes a tripping lever 31. When the circuit breaker is tripped, the tripping lever 31 drives the micro switch 11 to operate. In this example, a linkage rod 32 is also hingedly provided on the tripping lever 31, and a button push rod 111 is also provided on the micro switch 11. The tripping lever 31 operates and then the linkage rod 32 moves synchronously to press the button push rod 111 to trigger the micro switch 11 to close. More specifically, when the circuit breaker is tripped, the process of how to trigger the micro switch 11 to operate can refer to our patent, and the circuit breaker described in the patent application number CN201420456971.2 is not repeated here.

[0027] The output signal of the indicating device 12 is a light wave signal and / or a sound wave signal. Taking the output of the light wave signal as an example, the indicating device 12 includes an indicator light 121, and the battery 13 supplies power to the indicator light 121. The indicator light 121 is electrically connected to the two ends of the micro switch 11 through an electrical connection (usually a wire), and the micro switch 11 is arranged in the alarm indication circuit in the form of a normally open contact. When the circuit breaker has a tripping fault, the operating mechanism 3 drives the normally open contact of the micro switch 11 to close, the alarm indication circuit is connected, and the indicator light 121 lights up to provide a signal to the outside world. Usually, when a fault occurs, the indicator light 121 is set to a constant light mode. Of course, the indicating device 12 can also include an auxiliary circuit board. Through the control of the auxiliary circuit board, the indicator light 121 can be set to a flashing mode, which is more conducive to the observation of maintenance personnel. Of course, if the output signal also includes a sound wave signal, the indicator device 12 may also include a buzzer, which sends out an alarm signal, and can notify the maintenance personnel to quickly reach the area where the sound wave is sent, and then find the corresponding circuit breaker with a fault alarm more quickly through the indicator light 121. The combination of light wave signals and sound wave signals is more efficient.

[0028] like Figure 3 As shown, the circuit breaker further comprises an upper cover 23 covering the middle cover 22 , and an observation window 231 is arranged on the upper cover 23 at a position corresponding to the indicating device 12 , and the indicating device 12 outputs signals to the outside through the observation window 231 .

[0029] The indicator light 121 of the indicating device 12 is located outside the upper cover 23 through the observation window 231, which is convenient for external observation. When this structure is adopted, an external thread can usually be provided on the outside of the indicator light 121, and an internal thread can be provided on the inner wall of the observation window 231, and the indicator light 121 can be fixed to the inner wall through the cooperation of the internal and external threads. Of course, the indicator light 121 can also be fixed together with the alarm switch housing 1, and the indicator light 121 can be fixed by installing and fixing the alarm switch housing 1.

[0030] In addition, the indicator light 121 can also be set on the inner side of the upper cover 23. At this time, a light guide column is set on the observation window 231, and the light emitted by the indicator light 121 is irradiated on the light guide column, and the light guide column outputs a signal to the outside. The use of this structure does not affect the overall appearance of the circuit breaker, and the indicator light 121 is exposed and there is a risk of damage. The light guide column can be transparent glass or a transparent injection molded part. The material used for the transparent glass can be quartz glass, silicate glass, soda-lime glass or fluoride glass. The material used for the transparent injection molded part can be polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET) or polyvinyl chloride (PVC). Of course, the light guide column can also be made of other types of transparent materials, which will not be explained one by one here.

[0031] The color of the indicator light 121 can be selected according to actual needs, and usually red or green can be selected.

[0032] The battery 13 is a button cell or a dry cell.

[0033] The indicator light 121 can be one or multiple indicator lights arranged in an array. In the present embodiment, one indicator light 121 is used. If multiple indicator lights are provided, they can be arranged to flash at intervals, which is more convenient for maintenance personnel to observe.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An alarm switch with an indication function, characterized in that: The invention comprises an alarm switch housing (1), a micro switch (11), an indicating device (12) and a battery (13) arranged on the alarm switch housing (1); the micro switch (11), the indicating device (12) and the battery (13) constitute an alarm indicating circuit; the micro switch (11) controls the on and off of the alarm indicating circuit to realize the signal output of the indicating device (12).

2. A circuit breaker, comprising a main housing (2), an operating mechanism (3) and a contact system arranged in the main housing (2), wherein the operating mechanism (3) is activated to connect or disconnect the contact system, and characterized in that: An alarm switch with an indication function as claimed in claim 1 is arranged in the main housing (2). When the circuit breaker is tripped, the operating mechanism (3) drives the micro switch (11) to operate, the alarm indication circuit is connected, and the indication device (12) realizes signal output.

3. A circuit breaker according to claim 2, characterized in that: The main housing (2) comprises a base (21) and a middle cover (22) covering the base (21); a cavity (221) is provided in the middle cover (22); and the alarm switch is provided in the cavity (221).

4. A circuit breaker according to claim 2, characterized in that: The operating mechanism (3) comprises a tripping lever (31). When the circuit breaker is tripped, the tripping lever (31) drives the micro switch (11) to operate.

5. A circuit breaker according to claim 3, characterized in that: It also includes an upper cover (23) covering the middle cover (22), an observation window (231) being arranged on the upper cover (23) at a position corresponding to the indicating device (12), and the indicating device (12) outputs a signal to the outside through the observation window (231).

6. A circuit breaker according to any one of claims 2 to 5, characterized in that: The output signal of the indicating device (12) is a light wave signal and / or a sound wave signal.

7. A circuit breaker according to claim 5, characterized in that: The indicating device (12) comprises an indicator light (121), and the indicator light (121) is located outside the upper cover (23) through an observation window (231) to facilitate external observation.

8. A circuit breaker according to claim 5, characterized in that: The indicating device (12) comprises an indicator light (121). A light guide column is arranged on the observation window (231). The indicator light (121) is located on the inner side of the upper cover (23). The light emitted by the indicator light (121) irradiates the light guide column, and the light guide column outputs a signal to the outside.

9. A circuit breaker according to claim 6, characterized in that: The battery (13) is a button battery or a dry battery.

10. A circuit breaker according to claim 7 or 8, characterized in that: The indicator light (121) may be one or a plurality of indicator lights arranged in an array.

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