CN212625429U - Circuit breaker state indicating device and circuit breaker assembly - Google Patents
Circuit breaker state indicating device and circuit breaker assembly Download PDFInfo
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- CN212625429U CN212625429U CN202021395800.5U CN202021395800U CN212625429U CN 212625429 U CN212625429 U CN 212625429U CN 202021395800 U CN202021395800 U CN 202021395800U CN 212625429 U CN212625429 U CN 212625429U
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- circuit breaker
- indicating device
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Abstract
A circuit breaker state indicating device and circuit breaker assembly are disclosed. The circuit breaker state indicating device includes: a mechanical linkage comprising an actuator; the microswitch is provided with a button, a moving contact and a static contact; a plurality of output terminals electrically connected to one of the movable contact and the stationary contact, respectively, wherein the actuator of the mechanical linkage is configured to selectively engage to actuate a button of the micro-switch, actuation of the button causing the movable contact to move to selectively engage with the stationary contact, the movable contact being a silver contact. The circuit breaker assembly includes a circuit breaker and a circuit breaker state indicating device mounted with the circuit breaker.
Description
Technical Field
The utility model relates to a circuit breaker state indicating device and circuit breaker assembly including circuit breaker state indicating device.
Background
In a power distribution system, circuit breakers are used for line protection for terminal power distribution. In the event of an overload or short circuit of the system, the line is disconnected, avoiding damage to the line due to thermal stress or short circuit electrodynamic forces. In some industrial applications, a control device (e.g., a PLC) monitors the power distribution system by reading the state of the circuit breaker via a circuit breaker state indicating device.
There are two types of circuit breaker status indicating devices on the market, referred to as iOF and iOF + SD24, respectively. iOF status indicator of circuit breaker is usually used in PLC high current application (current ≧ 10mA), and its disadvantage is low reliability in PLC low current application (current <10mA), and there is often the case of signal loss. The iOF + SD24 breaker status indicator is designed for PLC low current applications (current <10mA) and rated voltage is 24V, failing to meet the high voltage (>24V) requirements.
Therefore, there is a need for a circuit breaker status indicating device that can be adapted for PLC low current, high voltage applications to meet market demands.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a circuit breaker state indicating device, it can be applicable to PLC low current, high voltage and use to satisfy the market demand.
According to an aspect of the utility model, a circuit breaker state indicating device is provided, include: a mechanical linkage comprising an actuator; the microswitch is provided with a button, a moving contact and a static contact; a plurality of output terminals electrically connected to one of the movable contact and the stationary contact, respectively, wherein the actuator of the mechanical linkage is configured to selectively engage to actuate a button of the micro-switch, actuation of the button causing the movable contact to move to selectively engage with the stationary contact, the movable contact being a silver contact.
Optionally, the actuator comprises an on-off actuator comprising an on-off microswitch that is selectively engaged to actuate a button of the on-off microswitch.
Optionally, the actuator comprises a trip actuator, the microswitch comprising a trip microswitch, the trip actuator selectively engaging to actuate a button of the trip microswitch.
Optionally, the actuator comprises a switch actuator and a trip actuator, the micro-switch comprising a switch micro-switch and a trip micro-switch, the switch actuator selectively engaging to actuate a button of the switch micro-switch, the trip actuator selectively engaging to actuate a button of the trip micro-switch.
Optionally, the plurality of output terminals are stud terminals.
Optionally, the movable contact is a silver gold plated contact.
Optionally, the stationary contact is a silver contact.
Optionally, the stationary contact is a silver gold plated contact.
Optionally, the circuit breaker status indication device further comprises a housing, the mechanical linkage and the micro-switch being mounted at least partially within the housing.
Optionally, the microswitch includes a plurality of output terminals electrically connected to one of the stationary contact and the movable contact, respectively, and the circuit breaker status indication device further includes a plurality of wires, where one end of each wire is electrically connected to one of the plurality of output terminals of the microswitch, and the other end of each wire is soldered to one of the plurality of output terminals.
Optionally, the other end of each wire is resistance welded to one of the plurality of output terminals.
According to the utility model discloses an on the other hand provides a circuit breaker subassembly, and the circuit breaker subassembly includes: a circuit breaker; according to the circuit breaker state indicating device, the circuit breaker state indicating device is installed together with the circuit breaker.
Drawings
Fig. 1 shows a perspective view of a circuit breaker status indicating device according to an embodiment of the present invention from the back;
fig. 2 is a front view of the circuit breaker state indicating device of fig. 1, with the circuit breaker state indicating device in a closed state and a cover removed to show the interior of the circuit breaker state indicating device;
fig. 3 is a front view of the circuit breaker state indicating apparatus of fig. 1, which is in a state in which the circuit breaker state indicating apparatus is in after the toggle switch is toggled in a direction indicated by an arrow, and a cover is removed to show an inside of the circuit breaker state indicating apparatus;
fig. 4 is a front view of the circuit breaker state indicating apparatus of fig. 1, which is in a state in which the circuit breaker state indicating apparatus 100 is in after the trip mechanism of the circuit breaker is actuated, and a cover is removed to show the interior of the circuit breaker state indicating apparatus;
FIG. 5 shows a schematic diagram of the internal structure of the microswitch;
fig. 6 shows a schematic view of an installation of a circuit breaker state indicating device according to the present invention with a circuit breaker;
fig. 7 is a front view of a circuit breaker status indicating device according to another embodiment of the present invention;
fig. 8 is a front view of a circuit breaker status indicating apparatus according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1-4 illustrate a circuit breaker status indication device 100 according to an embodiment of the present invention, wherein fig. 1 is a perspective view from the back, and fig. 2-4 are front views illustrating the circuit breaker status indication device 100 in different positions with the cover removed to show the interior.
As shown, the circuit breaker state indicating device 100 includes a housing 110 and a mechanical linkage 120, a micro switch 140, and a stud terminal housed within the housing 110. The mechanical linkage 120 includes a toggle switch 122, a U-bar 124, a hook 126, a trip bar 128, an opening and closing actuation plate 132, and a trip actuation plate 134, among others.
In use, the circuit breaker state indicating device 100 is coupled back-to-back with a circuit breaker (miniature circuit breaker) wherein the toggle switch 122 of the circuit breaker state indicating device 100 is coupled with the toggle switch of the circuit breaker and the trip bar 128 of the circuit breaker state indicating device 100 is coupled with the trip mechanism of the circuit breaker. When the toggle switch 122 is toggled and/or the trip mechanism of the circuit breaker is actuated, the opening and closing actuation plate 132 and/or the trip actuation plate 134 correspondingly undergo a rotational movement about their pivot points under the action of the mechanical linkage 120. The specific structure, operation and principles of the mechanical linkage 120 are known in the art and will not be described in detail herein.
Upon rotational movement of the opening and closing actuation plate 132 about its pivot point, the push button 142 of the microswitch 140 is depressed (see FIG. 2) or sprung (see FIG. 4) by the interaction of the actuation surface of the opening and closing actuation plate 132 with the push button 142 of the microswitch 140.
As shown in fig. 2-4, the circuit breaker state indicating device 100 shown in fig. 2 is in a closed state; fig. 3 shows the state of the circuit breaker state indicating apparatus 100 after the toggle switch 122 of the circuit breaker state indicating apparatus 100 is toggled in the direction indicated by the hollow arrow; and fig. 3 shows the state of the circuit breaker state indicating device 100 after the trip mechanism of the circuit breaker connected to the circuit breaker state indicating device 100 is actuated.
Fig. 5 shows a schematic diagram of the micro-switch 140, wherein the micro-switch 140 includes a button 142, a moving contact 144, a stationary contact 146, and a stationary contact 148, and outputs 144a, 146a, and 148a connected to the moving contact 144, the stationary contact 146, and the stationary contact 148, respectively. When the button 142 is pressed by the actuation plate of the mechanical linkage, the movable contact 144 is in contact with the stationary contact 146, so that the output ends 144a and 146a are connected and the output end 144a and the output end 148a are disconnected, and when the button 142 is bounced, the movable contact 144 is in contact with the stationary contact 148, so that the output ends 144a and 146a are disconnected and the output end 144a and the output end 148a are connected.
In the field of railways or wind power generation, etc., there is a demand for using a PLC having a low current (e.g., less than 10mA) and a high voltage (e.g., more than 24V). For such applications with low PLC current and high voltage, the existing circuit breaker status indication devices, such as iOF or iOF + SD24 circuit breaker status indication devices, have low reliability and often have signal loss. The utility model discloses an inventor is through many-sided experiment and research discovery, can improve the reliability in the low and high application of voltage of PLC electric current and effectively eliminate the signal loss phenomenon by a wide margin through improving micro-gap switch's contact. Therefore, the utility model discloses a novel micro-gap switch, wherein the contact is silver-plated gold contact. In an alternative embodiment, the contacts are silver contacts. In one embodiment, the movable contact of the microswitch is a silver gold plated contact. In an alternative embodiment, the movable contact of the microswitch is a silver contact. In another embodiment, the moving contact and the fixed contact of the microswitch are silver gold plated contacts. In an alternative embodiment, the moving contact and the fixed contact of the microswitch are both silver contacts. Here, the silver contact means that the contact body is made of silver, and the silver gold-plated contact means that the silver contact body is plated with gold. The utility model discloses an inventor discovers through the experiment, and static contact and moving contact all adopt silver-colored gilding contact can improve the reliability in the low and high application of voltage of PLC electric current well and effectively eliminate the signal loss phenomenon. However, the inventor of the utility model also finds that only the moving contact adopts silver-plated gold contact and the static contact adopts silver contact, also can improve the reliability in the low and high application of voltage of PLC electric current well and effectively eliminate the signal loss phenomenon, the cost is reduced simultaneously by a wide margin.
The utility model discloses an inventor has still found that circuit breaker state indicating device's wiring end adopts the double-screw bolt wiring end, can further improve stability, eliminates the signal phenomenon of losing. In the preferred embodiment, the microswitch 140 of the circuit breaker status indicating device 100 adopts silver plated gold contacts, and the terminal of the circuit breaker status indicating device adopts stud terminals, which can effectively improve the reliability of the PLC in the application of low current and high voltage and effectively eliminate the signal loss phenomenon.
Fig. 6 shows a circuit breaker assembly 10 according to an embodiment of the present invention, the circuit breaker assembly 10 including a circuit breaker state indicating device 100 and a circuit breaker 180. As shown, in the installed state, the housing 110 of the circuit breaker state indicating device 100 is installed back-to-back with the housing 182 of the circuit breaker 180. Wherein the toggle switch 122 of the circuit breaker state indicating apparatus 100 is connected with the toggle switch 184 of the circuit breaker 180, and the trip bar 128 of the circuit breaker state indicating apparatus 100 is connected with the trip mechanism (not shown) of the circuit breaker 180.
Fig. 7 shows a circuit breaker status indication apparatus 200 according to another embodiment of the present invention. The circuit breaker state indicating device 200 is mainly different from the circuit breaker state indicating device 100 in that the installation positions of the micro switch 240 and the micro switch 140 are different. In fig. 7, the wires from the micro-switch to the stud terminals are not shown for simplicity. Those skilled in the art will appreciate that the embodiment of fig. 7 is similar to the embodiment of fig. 2-4 in that the wires from the micro-switches to the stud terminals are similar. As shown in fig. 7, the circuit breaker status indicating device of the present invention has two positions 240a and 240b for installing the micro switch in the housing. The micro switch of the circuit breaker state indicating device 100 is installed at the position 240a, and the micro switch of the circuit breaker state indicating device 200 is installed at the position 240 b. Correspondingly, the micro switch 140 of the circuit breaker state indicating device 100 is selectively engaged with the opening and closing actuating plate, and the micro switch 240 of the circuit breaker state indicating device 200 is selectively engaged with the trip actuating plate 234. Accordingly, the PLC can read a state in which the trip switch of the circuit breaker state indicating device 100 is tripped or the trip mechanism is tripped through the stud terminal of the circuit breaker state indicating device 100, and can read a state in which the trip mechanism of the circuit breaker is tripped through the stud terminal of the circuit breaker state indicating device 200.
Fig. 8 shows a circuit breaker status indication apparatus 300 according to another embodiment of the present invention. The circuit breaker state indicating device 300 differs from the circuit breaker state indicating devices 100, 200 primarily in the microswitch arrangement. Additionally, in fig. 8, the wires from the micro-switch to the stud terminals are not shown for simplicity. For simplicity, not all stud terminals are shown in fig. 8. Those skilled in the art will appreciate that the embodiment of fig. 8 is similar to the embodiment of fig. 2-4 in that the wires from the micro-switches to the stud terminals are similar. As shown in fig. 8, the circuit breaker state indicating device 300 includes two microswitches 340a, 340b, which are disposed at positions 240a, 240b shown in fig. 7, respectively. Correspondingly, the microswitch 340a of the circuit breaker status indicating device 300 is selectively engaged with the opening and closing actuation plate 332, and the microswitch 340b is selectively engaged with the trip actuation plate 334. Accordingly, the PLC can read the state of the trip switch of the circuit breaker state indicating device 300 and the trip mechanism of the circuit breaker through the stud terminal of the circuit breaker state indicating device 300.
Although the present invention shows a mechanical linkage of a particular construction, the present invention is not limited thereto and any suitable mechanical linkage may be employed. For example, in a preferred embodiment of the present invention, the opening and closing actuation plate and the trip actuation plate are in the form of actuation plates, however the present invention is not limited thereto and any suitable actuator may be employed to selectively engage with the buttons of the micro-switch.
In the preferred embodiment of the present invention, the terminal of the circuit breaker status indicator device is in the form of a stud terminal. However, the present invention is not limited thereto, and the terminal of the circuit breaker state indicating device may adopt any suitable form of terminal.
The above description is only for the purpose of illustrating exemplary embodiments of the principles of the present invention, and is not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also within the scope of the invention.
Claims (12)
1. A circuit breaker status indicating device, comprising:
a mechanical linkage comprising an actuator;
the microswitch is provided with a button, a moving contact and a static contact;
a plurality of output terminals electrically connected to one of the moving contact and the stationary contact, respectively,
wherein the actuator of the mechanical linkage is configured to be selectively engaged to actuate a button of the micro-switch, actuation of the button causing the movable contact to move to selectively engage with the stationary contact, the movable contact being a silver contact.
2. The circuit breaker status indicating device of claim 1, wherein the actuator comprises a switch actuator, and the microswitch comprises a switch microswitch, the switch actuator selectively engaging to actuate a button of the switch microswitch.
3. The circuit breaker condition indicating device of claim 1, wherein the actuator comprises a trip actuator, and the microswitch comprises a trip microswitch, the trip actuator selectively engaging to actuate a button of the trip microswitch.
4. The circuit breaker state indicating device of claim 1, wherein the actuator comprises a trip actuator and a trip actuator, the microswitch comprises a trip microswitch and an on-off actuator, the trip actuator selectively engages to actuate a button of the on-off microswitch, and the trip actuator selectively engages to actuate a button of the trip microswitch.
5. The circuit breaker status indication device of any one of claims 1-4, wherein said plurality of output terminals are stud terminals.
6. The circuit breaker status indicating device of any one of claims 1-4, wherein the movable contact is a silver gold plated contact.
7. The circuit breaker status indicating device of any one of claims 1-4, wherein the stationary contact is a silver contact.
8. The circuit breaker status indicating device of any one of claims 1-4, wherein the stationary contact is a silver gold plated contact.
9. The circuit breaker state indicating device of any one of claims 1-4, further comprising a housing, the mechanical linkage and the microswitch being at least partially mounted within the housing.
10. The circuit breaker status indicating device of any one of claims 1-4, wherein the micro switch includes a plurality of output terminals electrically connected to one of the stationary contact and the movable contact, respectively, and further comprising a plurality of wires, each wire having one end electrically connected to one of the plurality of output terminals of the micro switch and another end soldered to one of the plurality of output terminals.
11. The circuit breaker status indicating device of claim 10 wherein said other end of each conductor is resistance welded to one of said plurality of output terminals.
12. A circuit breaker assembly, comprising:
a circuit breaker;
the circuit breaker status indicating device of any one of claims 1-11, the circuit breaker status indicating device being mounted with the circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021395800.5U CN212625429U (en) | 2020-07-15 | 2020-07-15 | Circuit breaker state indicating device and circuit breaker assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021395800.5U CN212625429U (en) | 2020-07-15 | 2020-07-15 | Circuit breaker state indicating device and circuit breaker assembly |
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| CN212625429U true CN212625429U (en) | 2021-02-26 |
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| CN202021395800.5U Active CN212625429U (en) | 2020-07-15 | 2020-07-15 | Circuit breaker state indicating device and circuit breaker assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4270438A1 (en) | 2022-04-12 | 2023-11-01 | Schneider Electric Industries SAS | State-indicating device for low current applications with wider operating range |
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2020
- 2020-07-15 CN CN202021395800.5U patent/CN212625429U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4270438A1 (en) | 2022-04-12 | 2023-11-01 | Schneider Electric Industries SAS | State-indicating device for low current applications with wider operating range |
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