Signal terminal system of circuit breaker and circuit breaker

Abstract

The present invention provides a signal terminal system of a circuit breaker and a circuit breaker, belonging to the technical field of low-voltage electrical appliances. The signal terminal system of the circuit breaker includes: a moving contact, a stationary contact, a first signal terminal and a second signal terminal; the first signal terminal is directly electrically connected to the stationary contact, the second signal terminal is electrically connected to the stationary contact through an electronic component, and the moving contact and the stationary contact are respectively used to connect the load and the DC power supply correspondingly. The circuit breaker includes the above-mentioned signal terminal system of the circuit breaker. The purpose of the present invention is to provide a signal terminal system of a circuit breaker and a circuit breaker, which can provide a plurality of signal terminals with different settings, facilitate users to flexibly use the signal terminals, and reduce the types of circuit breakers, which is convenient for users to select.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and in particular to a signal terminal system of a circuit breaker and a circuit breaker. Background Art

[0002] Power distribution is an extremely important link in the generation, transmission and use of electricity. In power distribution, circuit breakers are widely used as switching devices that can close, carry and disconnect currents under normal circuit conditions, or close, carry and disconnect currents under abnormal circuit conditions within a specified time.

[0003] In some circuit breakers, signal terminals are provided to collect circuit information of the load circuits connected to the moving contacts and the stationary contacts in the circuit breakers. However, existing circuit breakers with signal terminals are all provided with corresponding dedicated signal terminals according to actual needs, and cannot flexibly adapt to changes in user needs in actual applications, resulting in users having to select different circuit breakers for different signal terminal requirements, which makes it difficult for users to select and flexibly apply circuit breakers. Summary of the invention

[0004] The object of the present invention is to provide a signal terminal system of a circuit breaker and a circuit breaker, which can provide a plurality of signal terminals with different settings, facilitate users to flexibly use the signal terminals, and reduce the types of circuit breakers to facilitate user selection.

[0005] The embodiment of the present invention is achieved as follows:

[0006] According to one aspect of an embodiment of the present invention, a signal terminal system of a circuit breaker is provided, comprising: a moving contact, a stationary contact, a first signal terminal and a second signal terminal;

[0007] The first signal terminal is directly electrically connected to the static contact, the second signal terminal is electrically connected to the static contact via an electronic component, and the moving contact and the static contact are respectively used to connect to a load and a DC power supply.

[0008] Optionally, the first signal terminal and the second signal terminal are respectively connected to two ends of the electronic component, and one end of the electronic component connected to the first signal terminal is connected to the stationary contact.

[0009] Optionally, the electronic component is a resistor or a diode.

[0010] Optionally, there are multiple electronic components connected to the second signal terminal, and the multiple electronic components are connected in series or in parallel between the second signal terminal and the stationary contact.

[0011] Optionally, the number of the first signal terminal is at least one, and the number of the second signal terminal is at least one.

[0012] Optionally, when there are at least two second signal terminals, the second signal terminals are connected in parallel with the first signal terminals through corresponding electronic components.

[0013] Optionally, for any second signal terminal, the electronic component corresponding to the second signal terminal is a resistor or a diode.

[0014] Optionally, the signal terminal system of the circuit breaker further includes a wiring terminal and a first plug board, the wiring terminal is electrically connected to the stationary contact, and the first plug board is electrically connected to the moving contact.

[0015] Optionally, the signal terminal system of the circuit breaker further includes a second plugboard, and the second plugboard is used to connect the through pole.

[0016] Another aspect of the embodiments of the present invention provides a circuit breaker, comprising: a signal terminal system of any one of the above circuit breaker.

[0017] The beneficial effects of the embodiments of the present invention include:

[0018] A signal terminal system of a circuit breaker provided by an embodiment of the present invention comprises a moving contact, a stationary contact, a first signal terminal and a second signal terminal. During application, the moving contact and the stationary contact are connected to the load circuit. For example, one of the moving contact and the stationary contact is connected to the electrode of a DC power supply and the other is connected to the load. The on-off of the load circuit is achieved by controlling whether the moving contact and the stationary contact are in contact. The first signal terminal and the second signal terminal are both connected to the stationary contact and can be used to connect to a signal device, so that circuit information can be transmitted between the load circuit and the signal device through the first signal terminal and / or the second signal terminal. Among them, the first signal terminal is directly electrically connected to the static contact, and the second signal terminal is electrically connected to the static contact through an electronic component. Through the first signal terminal and the second signal terminal, multiple signal terminals of connection forms can be provided to the user at the same time (a signal terminal directly connected to the static contact for the signal device to obtain a battery signal, and a signal terminal connected to the static contact through an electronic component for the signal device to obtain a load signal), so that the user can select and connect according to actual needs and the specific setting needs of the signal device, or connect different signal devices to the circuit breaker through the first signal terminal and the second signal terminal at the same time according to actual needs. When the type of the connected signal device needs to be replaced, the corresponding first signal terminal or second signal terminal that meets the connection requirements can be selected for connection, reducing the need to replace the corresponding circuit breaker when the signal device type is replaced. Through the circuit breaker signal terminal system of the above structure, multiple signal terminals of connection forms can be provided for the circuit breaker at the same time, so as to adapt to the connection requirements of different signal devices, facilitate user use, and reduce the types of models set for circuit breakers corresponding to different signal devices, which is convenient for production and user selection.

[0019] A circuit breaker provided by an embodiment of the present invention adopts the above-mentioned signal terminal system of the circuit breaker, and can provide a plurality of signal terminals with different settings, so as to facilitate users to flexibly use the signal terminals, and reduce the types of circuit breakers, so as to facilitate users to select. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 One of the structural schematic diagrams of the signal terminal system of the circuit breaker provided by the embodiment of the present invention;

[0022] Figure 2 A second structural schematic diagram of a signal terminal system of a circuit breaker provided in an embodiment of the present invention;

[0023] Figure 3 A third structural diagram of a signal terminal system of a circuit breaker provided in an embodiment of the present invention;

[0024] Figure 4 A fourth structural schematic diagram of a signal terminal system of a circuit breaker provided in an embodiment of the present invention;

[0025] Figure 5 The fifth structural diagram of the signal terminal system of the circuit breaker provided in the embodiment of the present invention.

[0026] Icon: 110 - moving contact; 120 - stationary contact; 131 - first signal terminal; 132 - second signal terminal; 140 - electronic component; 150 - wiring terminal; 161 - first socket board; 162 - second socket board. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] 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, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] An embodiment of the present invention provides a signal terminal system of a circuit breaker, such as Figure 1 As shown, it includes: a moving contact 110, a stationary contact 120, a first signal terminal 131 and a second signal terminal 132; the first signal terminal 131 is directly electrically connected to the stationary contact 120, and the second signal terminal 132 is electrically connected to the stationary contact 120 through an electronic component 140. The moving contact 110 and the stationary contact 120 are respectively used to connect the load and the DC power supply.

[0034] In practical applications, the electrode of the DC power supply connected to the moving contact 110 or the stationary contact 120 of the signal terminal system of the circuit breaker can be called a protection electrode, and the other electrode of the DC power supply is directly connected to the load and can be called a through electrode. In the signal terminal system of the circuit breaker, one of the moving contact 110 and the stationary contact 120 is connected to the protection electrode of the DC power supply, and the other is connected to the load, so that the signal terminal system of the circuit breaker can be connected between the DC power supply and the load, so that the load and the protection electrode and the through electrode of the DC power supply form a load circuit, so that the on and off of the circuit can be controlled by whether the moving contact 110 and the stationary contact 120 are in contact or not.

[0035] Among them, the first signal terminal 131 and the second signal terminal 132 can adopt the same specifications or different specifications. Technical personnel in this field can set the specifications of the first signal terminal 131 and the second signal terminal 132 according to actual needs so that the first signal terminal 131 and the second signal terminal 132 can adapt to the signal equipment to which they are to be connected.

[0036] The electronic component 140 connected between the second signal terminal 132 and the static contact 120 can generally be a resistor, a diode, an inductor, etc. The specific selection of the electronic component 140 can be set according to the specific needs of the signal device connected to the circuit breaker through the second signal terminal 132.

[0037] A signal terminal system of a circuit breaker provided in an embodiment of the present invention comprises a moving contact 110, a stationary contact 120, a first signal terminal 131 and a second signal terminal 132. In the application process, the moving contact 110 and the stationary contact 120 are connected to the load circuit. For example, one of the moving contact 110 and the stationary contact 120 is connected to the electrode of the DC power supply and the other is connected to the load. The on-off of the load circuit is achieved by controlling whether the moving contact 110 and the stationary contact 120 are in contact. The first signal terminal 131 and the second signal terminal 132 are both connected to the stationary contact 120 and can be used to connect to a signal device, so that circuit information can be transmitted between the load circuit and the signal device through the first signal terminal 131 and / or the second signal terminal 132. Among them, the first signal terminal 131 is directly electrically connected to the static contact 120, and the second signal terminal 132 is electrically connected to the static contact 120 through the electronic component 140. The first signal terminal 131 and the second signal terminal 132 can provide users with signal terminals of multiple connection forms at the same time (signal terminals directly connected to the static contact 120 for the signal device to obtain battery signals, and signal terminals connected to the static contact 120 through the electronic component 140 for the signal device to obtain load signals), so that users can select connections according to actual needs and specific setting needs of the signal device, or connect different signal devices to the circuit breaker through the first signal terminal 131 and the second signal terminal 132 at the same time according to actual needs. When the type of connected signal device needs to be changed, the corresponding first signal terminal 131 or second signal terminal 132 that meets the connection requirements can be selected for connection, thereby reducing the need to replace the corresponding circuit breaker when changing the type of signal device. Through the circuit breaker signal terminal system of the above structure, it is possible to provide the circuit breaker with signal terminals of multiple connection forms at the same time, so as to adapt to the connection requirements of different signal devices, facilitate user use, and reduce the types of models of circuit breakers set to correspond to different signal devices, which is convenient for production and user selection.

[0038] Alternatively, if Figure 1 As shown, the first signal terminal 131 and the second signal terminal 132 are respectively connected to two ends of the electronic component 140 , and one end of the electronic component 140 connected to the first signal terminal 131 is connected to the stationary contact 120 .

[0039] The electronic component 140 can be set as one, the first signal terminal 131 and the second signal terminal 132 can be set as one respectively. Of course, the first signal terminal 131 and the second signal terminal 132 can also be set as multiple respectively, or one of them can be set as multiple. When the first signal terminal 131 and the second signal terminal 132 are both multiple or one of them is multiple, those skilled in the art can make adaptive adjustments to connect the first signal terminal 131 and the second line number terminal to the two ends of the electronic component 140 respectively, so as to provide multiple second signal terminals 132 connected to the same electronic component 140, so as to facilitate the simultaneous access of multiple signal devices of the same type; for example, Figure 2 As shown, when the first signal terminal 131 and the second signal terminal 132 are respectively set to be multiple, one end of the electronic component 140 is respectively connected to each first signal terminal 131, and the other end is respectively connected to each second signal terminal 132, and the end of the electronic component 140 connecting the first signal terminal 131 is connected to the static contact 120; when the first signal terminal 131 is one and the second signal terminal 132 is multiple, or the first signal terminal 131 is multiple and the second signal terminal 132 is one, the connection settings of the first signal terminal 131 and the second signal at both ends of the electronic component 140 are similar to the above examples and are not repeated here.

[0040] The first signal terminal 131 and the second signal terminal 132 are respectively connected to the two ends of the electronic component 140, and the end of the electronic component 140 connected to the first signal terminal 131 is connected to the static contact 120, so that the first signal terminal 131 directly connected to the static contact 120 and the second connection terminal connected to the static contact 120 through the electronic component 140 can be arranged relatively close to each other, and the overall structure is more compact, which is convenient for the arrangement and layout of the signal terminal system of the circuit breaker in the circuit breaker, and is beneficial to optimize the internal layout of the circuit breaker and reduce the volume of the circuit breaker.

[0041] Optionally, the electronic component 140 is a resistor or a diode.

[0042] When the electronic element 140 is set as a resistor, the resistor can provide a current limiting function for the electrical connection between the second signal terminal 132 and the static contact 120, reducing the current of the second signal terminal 132 connection line, so as to provide the user with a second signal terminal 132 adapted to a signal device with a relatively small working current, and transmit a load signal to the signal device with a relatively small working current, and a first signal terminal 131 adapted to a conventional signal device that can be directly connected to the static contact 120, and transmit a battery signal to the conventional signal device. The signal device with a relatively small working current is connected to the static contact 120 through the second signal terminal 132 corresponding to the connection resistor, which can avoid the influence of large current on the normal use of the signal device.

[0043] When the electronic element 140 is set as a diode, the diode can provide rectification, voltage stabilization or polarity protection for the electrical connection between the second signal terminal 132 and the static contact 120, so that the user can be provided with a second signal terminal 132 adapted to the signal device requiring rectification, voltage stabilization or polarity protection, and transmit a load signal thereto, and a first signal terminal 131 adapted to the conventional signal device that can be directly connected to the static contact 120, and transmit a battery signal thereto. It is convenient for the user to selectively connect conventional signal devices and signal devices requiring rectification, voltage stabilization or polarity protection to the circuit breaker, or to connect them to the circuit breaker at the same time through the signal terminal system of the circuit breaker. When it is necessary to switch the type of signal device connected to the circuit breaker through the signal terminal (switch between conventional signal devices and signal devices requiring rectification, voltage stabilization or polarity protection), it is not necessary to replace the circuit breaker as a whole, but only to switch the corresponding signal terminal (select the corresponding first signal terminal 131 or second signal terminal 132 according to the type of signal device required).

[0044] Alternatively, if Figure 3 As shown, there are multiple electronic components 140 connected to the second signal terminal 132 , and the multiple electronic components 140 are connected in series (the series connection is not shown in the drawings) or in parallel between the second signal terminal 132 and the stationary contact 120 .

[0045] By connecting multiple electronic components 140 between the second signal terminal 132 and the stationary contact 120, and connecting these electronic components 140 in series or in parallel, the electrical connection between the second signal terminal 132 and the stationary contact 120 can meet the connection adaptation requirements of signal devices with more complex connection requirements, so that the signal terminal system of the circuit breaker can provide adaptation for more types of signal devices, thereby improving the wide applicability of the signal terminal system of the circuit breaker.

[0046] Optionally, the number of the first signal terminal 131 is at least one, and the number of the second signal terminal 132 is at least one.

[0047] In the embodiment of the present invention, there may be various combinations of the number of the first signal terminals 131 and the second signal terminals 132, such as Figure 2 , Figure 3 and Figure 4 As shown, for example, there is one first signal terminal 131 and multiple second signal terminals 132; or there are multiple first signal terminals 131 and one second signal terminal 132; or there are multiple first signal terminals 131 and multiple second signal terminals 132 respectively. Figure 2 and Figure 4As shown, when there are multiple second signal terminals 132 , each second signal terminal 132 can be connected to the stationary contact 120 via the same electronic component 140 , or each second signal terminal 132 can correspond to one or more electronic components 140 and be connected to the stationary contact 120 .

[0048] In the embodiment of the present invention, when there are multiple second signal terminals 132, and each second signal terminal 132 is respectively connected to one or more electronic components 140, each electronic component 140 may be the same device or different devices, which is not limited here, and those skilled in the art may select and set the electronic components 140 according to actual needs. For example, the adaptation of signal devices corresponding to different connection requirements may be provided through multiple second signal terminals 132 of different types of correspondingly connected electronic components 140, or multiple second signal terminals 132 of the same type of correspondingly connected electronic components 140 may be used to simultaneously provide multiple signal terminals for signal devices with the same connection requirement, so as to facilitate simultaneous access to multiple signal devices of the same type.

[0049] Alternatively, if Figure 4 As shown, when there are at least two second signal terminals 132 , the second signal terminals 132 are connected in parallel with the first signal terminals 131 through corresponding electronic components 140 .

[0050] The second signal terminals 132 are connected in parallel with the first signal terminals 131 through corresponding electronic components 140 , so that the connection structure when multiple second signal terminals 132 are provided is more compact, which is convenient for the overall layout of the signal terminal system of the circuit breaker and for installation in the circuit breaker.

[0051] Optionally, for any second signal terminal 132 , the electronic component 140 corresponding to the second signal terminal 132 is a resistor or a diode.

[0052] When the second signal terminal 132 is set to at least two, for any second signal terminal 132, the corresponding electronic component 140 connected thereto can be a resistor or a diode, which can provide multiple signal devices adapted to different needs. When the electronic components 140 are resistors or diodes, respectively, the functions and effects of the correspondingly connected second signal terminals 132 have been described above and will not be repeated here. Among them, the electronic components 140 correspondingly connected to each second signal terminal 132 can be the same (all resistors or all diodes). Of course, the electronic components 140 correspondingly connected to each second signal terminal 132 can also be different devices (partially resistors and partially diodes) set according to actual needs. For example, there are two second signal terminals 132 and one first signal terminal 131. One of the two second signal terminals 132 is connected in parallel with the first signal terminal 131 through a resistor, and the other is connected in parallel with the first signal terminal 131 through a diode.

[0053] Alternatively, if Figure 5 As shown, the signal terminal system of the circuit breaker further includes a wiring terminal 150 and a first plug board 161 . The wiring terminal 150 is electrically connected to the stationary contact 120 , and the first plug board 161 is electrically connected to the moving contact 110 .

[0054] The static contact 120 and the moving contact 110 can be more conveniently connected to the load and the electrode of the DC power supply through the wiring terminal 150 and the first plug board 161. Among them, the wiring terminal 150 can be connected to the load, and the first plug board 161 can be connected to the electrode of the DC power supply. Of course, in actual applications, the first plug board 161 can also be connected to the load according to the wiring requirements and the wiring terminal 150 is connected to the electrode of the DC power supply. There is no limitation here, as long as the signal terminal system of the circuit breaker can be connected to the load circuit through the first plug board 161 and the wiring terminal 150.

[0055] Alternatively, if Figure 5 As shown, the signal terminal system of the circuit breaker further includes a second plug board 162, and the second plug board 162 is used for connecting the through pole.

[0056] Typically, the second power strip 162 also includes a line for connecting to a load, so that the through pole of the DC power supply can be conveniently and quickly connected to the load through the second power strip 162 .

[0057] A second plug board 162 is provided, and through the connection between the second plug board 162 and the straight-through pole, the signal terminal system of the circuit breaker can provide a separate straight-through pole plug board (for connecting connection lines that are not controlled by on and off), thereby making it more convenient to set up the connection lines of the load circuit without the need for an external straight-through pole.

[0058] Another aspect of the embodiments of the present invention provides a circuit breaker, comprising: a signal terminal system of any one of the above circuit breaker.

[0059] Generally, the circuit breaker further includes a housing, an operating mechanism and an arc extinguishing chamber disposed in the housing, the signal terminal system of the circuit breaker is also disposed in the housing, the operating mechanism is connected to the moving contact 110 of the signal terminal system of the circuit breaker, and the moving contact 110 can be controlled by the operating mechanism to make the moving contact 110 contact or move away from the static contact 120, so as to realize the on-off control of the load circuit connected through the moving contact 110 and the contact head. Among them, the opening of the arc extinguishing chamber corresponds to the contact position of the moving contact 110 and the static contact 120, so as to extinguish the arc generated when the moving contact 110 and the static contact 120 are disconnected (moved away).

[0060] The circuit breaker adopts the signal terminal system of the circuit breaker mentioned above, and can provide a plurality of signal terminals with different settings, so as to facilitate the flexible use of the signal terminals by users, and reduce the types of circuit breakers, so as to facilitate the selection of models by users.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A signal terminal system for a circuit breaker, characterized in that: include: A moving contact, a stationary contact, and a first signal terminal and a second signal terminal for connecting to a signal device; The first signal terminal is directly electrically connected to the static contact, the second signal terminal is electrically connected to the static contact via an electronic component, and the moving contact and the static contact are respectively used to connect to a load and a DC power supply; The first signal terminal and the second signal terminal are connected to two ends of the electronic component respectively, and one end of the electronic component connected to the first signal terminal is connected to the stationary contact.

2. The signal terminal system of the circuit breaker according to claim 1, characterized in that: The electronic component is a resistor or a diode.

3. The signal terminal system of the circuit breaker according to claim 1, characterized in that: There are multiple electronic components connected to the second signal terminal, and the multiple electronic components are connected in series or in parallel between the second signal terminal and the stationary contact.

4. The signal terminal system of the circuit breaker according to claim 1, characterized in that: The number of the first signal terminal is at least one, and the number of the second signal terminal is at least one.

5. The signal terminal system of the circuit breaker according to claim 4, characterized in that: When there are at least two second signal terminals, the second signal terminals are connected in parallel with the first signal terminals through the corresponding electronic components.

6. The signal terminal system of the circuit breaker according to claim 5, characterized in that: For any one of the second signal terminals, the electronic component corresponding to the second signal terminal is a resistor or a diode.

7. The signal terminal system of the circuit breaker according to claim 1, characterized in that: The signal terminal system of the circuit breaker further comprises a wiring terminal and a first plug board, wherein the wiring terminal is electrically connected to the stationary contact, and the first plug board is electrically connected to the moving contact.

8. The signal terminal system of the circuit breaker according to claim 7, characterized in that: The signal terminal system of the circuit breaker further comprises a second plug board, and the second plug board is used for connecting a through pole.

9. A circuit breaker, characterized in that: A signal terminal system for a circuit breaker comprising the signal terminal system of any one of claims 1 to 8.

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