CN117672730A - Switch - Google Patents

Abstract

The utility model provides a switch, includes electric operating mechanism, leakage current collection system, at least one phase circuit and a neutral pole circuit, phase circuit and neutral pole circuit all couple with leakage current collection system, and leakage current collection system is equipped with the leakage signal end, phase circuit includes moving contact subassembly, stationary contact, first wiring end and second wiring end, moving contact subassembly is including setting up the moving contact on the contact supports, and first wiring end and second wiring end are connected with stationary contact and moving contact respectively, neutral pole circuit includes first neutral pole wiring end and second neutral pole wiring end, and electric operating mechanism is equipped with the control wiring end, electric operating mechanism includes motor, gear train and drive mechanism, the motor passes through gear train drive mechanism, and drive mechanism and contact support are connected, and drive moving contact and stationary contact can be through control signal control, and can monitor residual current.

Description

Switch

Technical Field

The invention relates to the field of piezoelectric devices, in particular to a switch.

Background

The existing switch is unreliable in installation wiring, low in automation degree, insufficient in current carrying capacity along with the improvement of electricity load, often prone to burning or fusion welding, and free of a leakage detection function.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an intelligent switch.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a switch, includes electric operating mechanism, leakage current collection system, at least one phase circuit and a neutral pole circuit, phase circuit and neutral pole circuit all couple with leakage current collection system, and leakage current collection system is equipped with leakage signal end, phase circuit includes moving contact subassembly, stationary contact, first wiring end and second wiring end, electric operating mechanism is connected with the moving contact subassembly, the moving contact subassembly is including setting up the moving contact on the contact supports, first wiring end and second wiring end are connected with stationary contact and moving contact respectively, neutral pole circuit includes first neutral pole wiring end and second neutral pole wiring end, electric operating mechanism is equipped with control wiring end, electric operating mechanism includes motor, gear train and drive mechanism, the motor passes through gear train drive transmission mechanism, and drive mechanism is connected with the contact support, drives moving contact and stationary contact and separation.

Preferably, the neutral pole circuit is a through pole, i.e. the first neutral pole terminal and the second neutral pole terminal are directly and electrically connected to form a circuit loop of the neutral pole circuit.

Preferably, the first neutral terminal and the second neutral terminal are integrally formed.

Preferably, the gear set comprises an output gear, the transmission mechanism comprises a lever and a connecting rod, the lever and the contact support are rotatably arranged, the connecting rod is connected between the lever and the contact support, and the lever is in driving fit with the output gear.

Preferably, the switch further comprises a current collection device, the current collection device being coupled to the phase circuit.

Preferably, the switch is provided with a communication terminal, and the control terminal of the electric operating mechanism and the leakage signal end of the leakage current acquisition device are connected with the communication terminal.

Preferably, the electric operating mechanism is arranged at one end of the shell, the phase circuit and the neutral pole circuit are arranged at the other end of the shell, the first wiring terminal, the second wiring terminal, the first neutral pole wiring terminal and the second neutral pole wiring terminal are all arranged at the other end of the shell, and the first direction is from the end of the shell provided with the electric operating mechanism to the other end provided with the first wiring terminal, the second wiring terminal, the first neutral pole wiring terminal and the second neutral pole wiring terminal.

Preferably, the circuit loop of the phase circuit and the circuit loop of the neutral pole circuit are stacked along a third direction, the first terminal and the second terminal are arranged at intervals side by side along a second direction, the first neutral pole terminal and the second neutral pole terminal are arranged at intervals side by side along the second direction, the first terminal and the first neutral pole terminal are stacked along the third direction, the second terminal and the second neutral pole terminal are stacked along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

Preferably, the motor is arranged at one end of the shell, the gear set and the transmission mechanism are positioned between the moving contact assembly and the motor in the first direction, and the first wiring terminal, the moving contact, the fixed contact and the second wiring terminal are sequentially arranged in the second direction.

Preferably, the electric operating mechanism further comprises a control circuit, and the gear set, the transmission mechanism and the control circuit are stacked along a third direction.

Preferably, the phase circuit further comprises an arc extinguishing mechanism comprising arc extinguishing chambers superposed on the corresponding stationary contacts in a second direction, the arc extinguishing chambers being located between the first and second terminals in the second direction.

Preferably, the leakage current acquisition device is a zero sequence transformer, and the first wiring terminal and the first neutral wiring terminal pass through the zero sequence transformer.

Preferably, the lever and the output gear are coaxially arranged, the lever is provided with at least one limiting protrusion matched with the output gear, the output gear is provided with at least one driving protrusion matched with the lever, and the driving protrusion and the limiting protrusion are enabled to drive the lever to rotate when the output gear rotates.

Preferably, the motor comprises a baffle plate, wherein the gear set comprises an output gear and a plurality of transmission gears, and the motor drives the output gear through the transmission gears; the transmission gears and the output gears are arranged on one side of the partition board, and the lever, the connecting rod, the contact support and the moving contact are arranged on the other side of the partition board.

Preferably, the electric control device comprises an electric control shell, wherein the electric control shell comprises an electric control first shell and an electric control second shell, a module accommodating cavity is formed by arranging the electric control first shell and the electric control second shell relatively, the electric control first shell and the electric control second shell are internally provided with a partition plate, the module accommodating cavity is divided into an electric control first space and an electric control second space, the electric control first space is formed between the partition plate and the electric control first shell, the electric control second space is formed between the partition plate and the electric control second shell, a gear set is arranged in the electric control first space, and a transmission mechanism, a moving contact assembly and a control circuit are arranged in the electric control second space.

The switch is a novel switch, and is provided with an electric operating mechanism, wherein the electric operating mechanism comprises a motor, a gear set and a transmission mechanism, the transmission mechanism is driven by the motor to drive the gear set to drive a movable contact assembly, a traditional operating mechanism with a lock catch and a jump catch can be omitted, the switch can be controlled to be closed and disconnected through a control signal, and a leakage current sampling device is arranged to monitor whether a phase circuit and a neutral pole circuit have residual currents or not.

In addition, the neutral pole circuit adopts a straight-through pole mode, so that the intelligent switch is simple in overall structure and convenient to miniaturize.

In addition, the transmission mechanism consists of a lever and a connecting rod, only comprises the lever and the connecting rod, the lever is connected with the output gear, the connecting rod is connected between the lever and the contact support, the structure is very simple, no complex structure exists, the transmission is reliable and the size is small.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a switch embodiment of the present invention;

FIG. 2 is an exploded schematic view of the overall structure of a switch embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of the switch embodiment of the present invention with the housing removed, showing the structure of one side of the first electrical operator embodiment;

FIG. 4 is another schematic view of the internal structure of the switch embodiment of the present invention with the housing removed, showing the structure of the other side of the first electrical operator embodiment;

FIG. 5 is a schematic side view of a second embodiment of an electrical actuator within a housing of a switch of the present invention;

FIG. 6 is a schematic diagram of another side structure of a second embodiment of an electrical actuator within a housing of a switch of the present invention;

FIG. 7 is a schematic view of the output gear and lever of the electrical operating mechanism of the switch of the present invention;

FIG. 8 is another schematic view of the output gear and lever of the electrical operating mechanism of the switch of the present invention;

FIG. 9 is a cross-sectional view of the moving contact assembly of the switch of the present invention;

Detailed Description

Specific embodiments of the switch of the present invention are further described below with reference to the examples shown in the drawings. The switch of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1-6, an embodiment of an intelligent switch disclosed by the invention comprises a housing 1, an electric operating mechanism 3, a leakage current acquisition device 9, at least one phase circuit and a neutral electrode circuit, wherein the electric operating mechanism 3, the leakage current acquisition device 9, the at least one phase circuit and the neutral electrode circuit are arranged in the housing 1, the phase circuit and the neutral electrode circuit are both coupled with the leakage current acquisition device 9, and the leakage current acquisition device 9 is provided with a leakage current signal end 910 for outputting an acquired leakage current signal; each phase circuit comprises a moving contact assembly, a fixed contact 220, a first wiring terminal 21 and a second wiring terminal 22, wherein the moving contact assembly comprises a contact support 53 and a moving contact 530 arranged on the contact support 53, the first wiring terminal 21 and the second wiring terminal 22 are respectively connected with the fixed contact 220 and the moving contact 530, the electric operating mechanism 3 is connected with the contact support 53 of at least one phase circuit, the moving contact 530 is driven to contact and separate from the fixed contact 220, the closing and breaking control of a switch is realized, one end of the first wiring terminal 21 and one end of the second wiring terminal 22 are respectively connected with the fixed contact 220 and the moving contact 530, and the other end of the first wiring terminal 22 is used for wiring; the neutral circuit comprises a first neutral terminal 24 and a second neutral terminal 25 for connection, and the electric operator 3 is provided with a corresponding control terminal 310 for receiving control signals. One of the first terminal 21 and the second terminal 22 serves as an incoming line end of the phase circuit, and the other serves as an outgoing line end. A first neutral terminal 24 and a second neutral terminal 25, one of which serves as the neutral inlet and the other as the neutral outlet.

The switch of this embodiment is a novel intelligent switch, is equipped with electric operating mechanism 3 and includes motor 31, gear train 30 and drive mechanism 5, drives drive mechanism 5 drive moving contact subassembly through motor 31 drive gear train 30, does not adopt traditional take hasp and jump the operating device who detains, can carry out closure and breaking control through analog signal button 50 or external control signal, is equipped with leakage current collection device 9 moreover, monitors whether phase circuit and neutral pole circuit have residual current, its simple structure, small reliability height.

Preferably, the first terminal 21, the second terminal 22, the first neutral terminal 24 and the second neutral terminal 25 are all connected with a wiring terminal 23, at least one end of the housing 1 is provided with a wiring slot for accommodating the wiring terminal 23, the wiring terminal 23 in this embodiment is in a bus bar type structure, and an external copper bar plug-in type is connected to the wiring terminal 23. Of course, other structures of terminals can be provided to accommodate different wiring modes. As other embodiments, the first terminal 21, the second terminal 22, the first neutral terminal 24 and the second neutral terminal 25 may have one end protruding out of the housing 1, and a portion protruding out of the housing 1 is a terminal structure, and is connected to an external busbar clamp in a plug-in manner. In addition, the user can set corresponding wiring terminals 23 on the parts of the first wiring terminal 21 and the second wiring terminal 22 extending out of the switch according to the needs so as to match different wiring modes or can directly connect wires without setting the wiring terminals 23.

The intelligent switch adopts the electric operating mechanism 3 to drive the movable contact 530, the electric operating mechanism 3 can be controlled by the control terminal 310 to realize the on-off control of the intelligent switch, and the residual current signal is acquired by the leakage current acquisition device 9, so that the intelligent switch has simple structure, small volume and high reliability.

As shown in fig. 1-6, the switch of the present embodiment includes only one phase circuit, i.e., the switch includes only one set of moving contact assemblies, stationary contacts 220, first terminals 21, and second terminals 22. The switch comprises a leakage current acquisition device 9, a phase circuit and a neutral pole circuit, wherein the phase circuit and the neutral pole circuit are coupled with the leakage current acquisition device 9. The leakage current acquisition device 9 is a zero sequence transformer 91, and the circuit loop of the phase circuit and the circuit loop of the neutral pole circuit both pass through the zero sequence transformer 91. Of course, as other embodiments, the switch may also include multiple phase circuits.

The electric operating mechanism 3 is connected with a moving contact assembly of a phase circuit, the electric operating mechanism 3 comprises a motor 31, a gear set 30 and a transmission mechanism 5, the moving contact assembly comprises a moving contact 530 arranged on a contact support 53, the motor 31 drives the transmission mechanism 5 through the gear set 30, the transmission mechanism 5 is connected with the contact support 53, the moving contact 530 is driven to contact and separate from the fixed contact 220, the closing and breaking of the phase circuit are achieved, the moving contact 530 is arranged opposite to the fixed contact 220, one ends of a first wiring terminal 21 and a second wiring terminal 22 are respectively connected with the fixed contact 220 and the moving contact 530, and the other ends of the first wiring terminal 21 and the second wiring terminal 22 are used for wiring. The first wiring terminal 21 is connected with the fixed contact 220, and the second wiring terminal 22 is connected with the movable contact 530; alternatively, the first terminal 21 may be connected to the moving contact 530, and the second terminal 22 may be connected to the fixed contact 220. The first terminal 21 is used as the inlet terminal of the phase circuit, and the second terminal 22 is used as the outlet terminal of the phase circuit, which can be interchanged according to the requirement. The first terminal 21, the fixed contact 220, the moving contact 530 of the moving contact assembly, and the second terminal 22 form a circuit loop of a phase circuit, and in this embodiment, the first terminal 21 passes through the zero sequence transformer 91.

Preferably, the switch is provided with an arc extinguishing mechanism 6, the arc extinguishing mechanism 6 comprises an arc extinguishing chamber 60, the arc extinguishing chamber 60 is correspondingly arranged with the moving contact 530 and the fixed contact 220, and is used for extinguishing an arc generated when the moving contact 220 and the fixed contact 220 are separated, so that the circuit bearing capacity of the switch can be improved. Of course, as another embodiment, the arc extinguishing mechanism 6 may not be provided.

Preferably, the other ends of the first terminal 21 and the second terminal 22 are terminal blocks, and external terminal blocks 23 are connected to the terminal blocks, so that different terminal blocks 23 can be selected according to the needs to support different connection modes.

Preferably, the phase circuit is further provided with a current acquisition device (not shown in the figure) for acquiring a current signal of the switch, the current acquisition device being coupled to the phase circuit. Preferably, the current collection means is disposed at the inlet terminal, the current collection means being coupled to the first terminal 21. Further, preferably, the current collecting device is a shunt, in particular a manganese-copper alloy shunt, the shunt and the corresponding first wiring terminal 21 are integrally formed, and a signal wiring terminal is arranged on the shunt and used for collecting signals. Of course, as other embodiments, the shunt may be integrally formed with the second terminal 22. Of course, as another embodiment, the current collecting device may be a current transformer, and the first terminal 21 passes through the current transformer, and the current transformer is disposed in the housing 1. The current transformer can also be arranged outside the shell 1, and the wiring board structure of the first wiring terminal 21 or the second wiring terminal 22 extending out of the shell 1 is correspondingly prolonged and penetrates through the corresponding current transformer.

The neutral pole circuit comprises a first neutral pole terminal 24 and a second neutral pole terminal 25, wherein the first neutral pole terminal 24 and the second neutral pole terminal 25 are respectively used as a wire inlet end and a wire outlet end of the neutral pole circuit, the first neutral pole terminal 24 is used as the wire inlet end, and the second neutral pole terminal 25 is used as the wire outlet end; of course, the first neutral terminal 24 serves as the outlet terminal and the second neutral terminal 25 serves as the inlet terminal.

In a preferred embodiment shown in fig. 3-4, the neutral pole circuit is a through pole, i.e. the first neutral pole terminal 24 and the second neutral pole terminal 25 are directly electrically connected to form a circuit loop of the neutral pole circuit, and no break point is formed between the moving contact and the fixed contact. Preferably, the first neutral terminal 24 and the second neutral terminal 25 are integrally formed and pass through the zero sequence transformer 91. Of course, as another embodiment, the neutral pole circuit also includes a moving contact 530 and a fixed contact 220, the first neutral pole terminal 24 and the second neutral pole terminal 25 are respectively connected with the moving contact 530 and the fixed contact 220, and the electric operating mechanism 3 also drives the moving contact assembly of the neutral pole circuit to move, so that the moving contact 530 cooperates with the fixed contact 220, and it is also possible to implement closing and breaking of the neutral pole circuit. The neutral pole circuit of the intelligent switch of the embodiment adopts a straight-through pole mode, so that the intelligent switch has a simple integral structure and is convenient for the miniaturization design of the intelligent switch. Specifically, the neutral pole circuit only includes a neutral pole terminal plate, and the neutral pole terminal plate is bent into a U-shaped structure, and two opposite side walls of the U-shaped structure are respectively used as a first neutral pole terminal 24 and a second neutral pole terminal 25.

The intelligent switch of this embodiment adopts electric operating mechanism 3 drive moving contact 530, does not set up traditional operating mechanism who takes hasp and jump knot, can realize intelligent switch's on-off control through control terminal 310 control electric operating mechanism 3, obtains the electric current acquisition signal through current collector's shunt signal terminal, obtains residual current signal through electric leakage signal end 910, carries out the connection of main loop through binding post 23, intelligent switch simple structure, small reliability height.

As shown in fig. 5-6, the gear set 30 includes an output gear 33 and a plurality of transmission gears 32, the motor 31 drives the output gear 33 through the transmission gears 32, and the output gear 33 is in driving engagement with the transmission mechanism 5. The transmission gear 32 of the present embodiment includes a first transmission gear fitted over the output shaft of the motor 31, the first transmission gear directly driving the output gear 33, and as other embodiments, a plurality of second transmission gears that transmit between the first transmission gear and the output gear 33 may be included. Preferably, each gear of the gear set, including the output gear 33 and the transmission gear 32 are all straight gears, and teeth are arranged on radial side walls of the output gear 33 and the transmission gear 32, so that the transmission is simple and reliable. Of course, bevel gears or bevel gears are also possible as other embodiments. The number of the transmission gears 32 can be adjusted as required.

As shown in fig. 5-6, the transmission mechanism 5 includes a lever 51 and a connecting rod 52, the moving contact assembly includes a contact support 53 and a moving contact 530 disposed on the contact support 53, the lever 51 and the contact support 53 are rotatably disposed, the connecting rod 52 is connected between the lever 51 and the contact support 53, the lever 51 is in driving fit with the output gear 33, the moving contact 530 is mounted on the contact support 53, the output gear 33 drives the lever 51 to rotate, the lever 51 drives the contact support 53 to rotate through the connecting rod 52, and the contact support 53 rotates to drive the moving contact 530 to swing, so as to realize the closing and opening actions of the switch.

Preferably, the transmission mechanism 5 is composed of a lever 51 and a connecting rod 52, only the lever 51 and the connecting rod 52 are provided, the lever 51 is connected with the output gear 33, the connecting rod 52 is connected between the lever 51 and the contact support 53, the structure is very simple, no complex structure exists, and the transmission is reliable and the volume is small. Of course, as a modified embodiment, other transmission links may be added; or the contact support 53 is directly driven by the lever 51, for example, the lever 51 extension projection is provided with an integral driving arm which is inserted into the driving groove of the plug support 53 to be engaged.

Preferably, the moving contact assembly further comprises a contact supporting spring 54, the contact supporting 53 is installed in the shell 1 through the contact supporting spring 54, and the acting force of the contact supporting spring 54 drives the contact supporting 53 to rotate towards the breaking position, so that a control circuit can be simplified. Of course, as other embodiments, the contact support spring 54 may not be provided.

As shown in fig. 1 and 2, the housing 1 of the switch of the present embodiment includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are fastened together to form the housing 1 of the switch. The electric operating mechanism 3 is arranged at one end of the shell 1, and the phase circuit and the neutral pole circuit are arranged at the other end of the shell 1, so that a control circuit of the electric operating mechanism 3 is far away from a wiring end of a switch main loop, and weak current and strong current are separated.

Preferably, the electric operating mechanism 3 comprises an electric operating shell 8, a motor 31, a gear set 30 and a transmission mechanism 5 are arranged in the electric operating shell 8, and the electric operating shell 8 is installed in the shell 1 after the electric operating mechanism 3 is assembled into an integral driving module, so that the assembly efficiency is high, and the insulation property is improved. As a preferred embodiment, the contact support 53 is also mounted on the electric operation housing 8, the contact support 53 is at least partially mounted in the electric operation housing 8, and one end of the moving contact 530 provided with the moving contact extends out of the electric operation housing 8 to be matched with the fixed contact 220.

As shown in fig. 3-4, in the first embodiment of the electric actuator 3, the motor 31 is disposed at one end of the housing 1, and the first terminal 21, the second terminal 22, the first neutral terminal 24, and the second neutral terminal 25 are disposed at the other end of the housing 1 remote from the motor 31. The first direction is from the end of the shell 1 provided with the electric operating mechanism 3 to the other end provided with the first wiring terminal 21, the second wiring terminal 22, the first neutral wiring terminal 24 and the second neutral wiring terminal 25, and is also the height direction of the shell 1; in the height direction, the motor 31 is disposed above the lever 51, and the lever 51, the link 52, and the contact support 53 are disposed in this order in the first direction of the housing 1, i.e., the height direction. As shown in fig. 3 to 4, the circuit loops of the phase circuit and the circuit loops of the neutral pole circuit are stacked in the third direction, that is, in the width (i.e., thickness) direction of the case 1; the first terminals 21 and the second terminals 22 are arranged at intervals side by side along the second direction, that is, the length direction of the housing 1, the first neutral terminals 24 and the second neutral terminals 25 are arranged at intervals side by side along the second direction, that is, the length direction of the housing 1, the first terminals 21 and the first neutral terminals 24 are stacked along the third direction, the second terminals 22 and the second neutral terminals 25 are stacked along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. The first terminal 21 and the first neutral terminal 24 pass through the zero sequence transformer 91. Of course, the second connection 22 and the second neutral connection 25 can also pass through the zero sequence transformer 91. The first terminal 21, the second terminal 22, the first neutral terminal 24 and the second neutral terminal 25 are each provided with a connection terminal 23.

The first terminal 21, the second terminal 22, the first neutral terminal 24 and the second neutral terminal 25 are all arranged at the other end of the housing 1, which is beneficial to wiring and simplifying structural layout, and meanwhile, strong current is far away from weak current. Of course, as other embodiments of the deterioration, the first terminal 21, the second terminal 22, the first neutral terminal 24 and the second neutral terminal 25 may not be provided on the same side wall.

As shown in fig. 5 to 6, the second embodiment of the electric actuator 3 is different from the first embodiment in the assembly positions of the motor 31 and the lever 51. In the second embodiment, the lever 51 is disposed at one end of the housing 1, away from the first terminal 21 and the second terminal 22, and the motor 31 is disposed between the lever 51 and the first terminal 21. In the height direction, the lever 51 is disposed above the motor 31, the output shaft of the motor 31 is parallel to the axial direction of the lever 51, the lever 51 is disposed coaxially with the output gear 33, and a first transmission gear on the output shaft of the motor 31 is in driving engagement with the output gear 33. Referring to fig. 6, the other end of the lever 51 remote from the output gear 33 is connected to a link 52, and the link 52 is connected to a contact support 53.

Preferably, referring to fig. 5-6, the electric operator 3 further includes a control circuit, and the motor 31 is connected to the control circuit, and receives a control signal through the control circuit and controls the forward rotation, the reverse rotation and/or the stop rotation of the motor 31 to drive the gear set 30 and the transmission mechanism 5. Preferably, the control circuit comprises at least one micro-switch 41, at least one micro-switch 41 being used to monitor the position of the gear set 30 and/or the transmission 5 for accurate closing and opening control. Preferably, the control circuit includes a circuit board 40, the micro switch 41 and the diode are mounted on the circuit board 40, so as to facilitate assembly, and the control terminal 310 may also be disposed on the circuit board 40 and extend out of the housing 1, so as to facilitate wiring.

Referring to fig. 2, the switch is provided with a communication terminal 110, a control terminal 310 of the electric operating mechanism 3 and a leakage signal terminal 910 of the leakage current collecting device 9 are connected with the communication terminal 110, and a communication interface hole is provided on the housing 1 for the communication terminal 110 to extend. Preferably, the signal leakage signal end 910 of the leakage current acquisition device 9 is also connected to the circuit board 40 of the electric operating mechanism 3, and the control terminal 310 of the electric operating mechanism 3 and the leakage signal end 910 of the leakage current acquisition device 9 are connected to an external controller through the communication terminal 110 on the circuit board 40. Of course, as other embodiments, the signal terminals of the current collecting device may be connected to the circuit board 40, and the circuit board 40 is connected to an external controller through the integrated communication terminal 110. Of course, as other embodiments, the circuit board 40 may be connected to an external controller through a wire extending to the outside of the housing 1. As other embodiments, the signal leakage signal terminal 910 of the leakage current sampling device 9, the control terminal 310 of the electric operating mechanism 3 and/or the signal terminal of the current sampling device may be connected to an external controller separately without the circuit board 40; or connected to the integrated communication terminal 110, and connected to an external controller through the integrated communication terminal 110. Preferably, the communication terminal 110 of the switch and the external controller can be connected by plugging via a plug terminal.

As shown in fig. 3-4, the motor 31 is disposed at one end of the housing 1, the gear set 30 and the transmission mechanism 5 are located between the moving contact assembly and the motor 31 in the first direction, and the first terminal 21, the moving contact 530, the fixed contact 220 and the second terminal 22 are sequentially disposed along the second direction, that is, the length direction, where one end of the fixed contact 220 provided with the fixed contact corresponds to one end of the corresponding moving contact 530 provided with the moving contact. Preferably, the stationary contact 220 and the first terminal 21 are integrally formed.

Preferably, the gear set 30, the transmission mechanism 5 and the control circuit are stacked in the third direction, i.e., the width direction of the housing 1, and located between the arc extinguishing mechanism 6 and the motor 31 in the first direction. The arc extinguishing mechanism 6 is arranged between the movable contact assembly and the other end of the shell 1 provided with the first wiring end 21 and the second wiring end 22, the movable contact assembly is connected with the transmission mechanism 5, the movable contact assembly is positioned between the transmission mechanism 5 and the corresponding arc extinguishing mechanism 6 in the first direction, one end of the fixed contact 220 provided with a fixed contact is correspondingly arranged with one end of the corresponding movable contact 530 provided with a movable contact, the arc extinguishing mechanism 6 comprises an arc extinguishing chamber 60, and the arc extinguishing chamber 60 is overlapped on the corresponding fixed contact 220 along the second direction, namely the length direction of the shell 1. The arc extinguishing chamber 60 is located between the corresponding first and second terminals 21 and 22 in the second direction.

The gear set 30, the transmission mechanism 5 and the control circuit are sequentially stacked, the structure is compact, the size of the switch is reduced, the transmission mechanism 5 is positioned between the gear set 30 and the control circuit, and the relationship between the gear set 30 and the control circuit can be adjusted as required, for example, the gear set 30 is positioned in the middle. Preferably, the motor 1 is installed inside the housing 1 in a lying state, and the length direction of the motor 1 is set along the width direction of the housing 1, that is, the axial direction of the output shaft of the motor 1 is set along the second direction.

Preferably, as shown in fig. 5-6, a partition 81 is provided in the housing 1 to separate the transmission mechanism 5 from the gear set 30 and/or the control circuit, and the lever 51 and the contact support 53 are rotatably mounted on the partition 81, and insulation and reliability are improved by the partition 81. The electric operation housing 8 of the present embodiment includes a partition plate 81, an electric operation first housing 82 and an electric operation second housing 83, the electric operation first housing 82 and the electric operation second housing 83 are respectively located at two sides of the partition plate 81, the partition plate 81 and the electric operation first housing 82 are oppositely arranged to form an electric operation first space for assembling the gear set 30, and the partition plate 81 and the electric operation second housing 83 are oppositely arranged to form an electric operation second space for assembling the transmission mechanism 5 and the control circuit; the contact support 53 and the moving contact 530 are also installed in the second space of the electric operation, and one end of the moving contact 530 provided with the moving contact extends out of the electric operation housing 8, and the partition board 81, the first electric operation housing 82 and the second electric operation housing 83 are assembled in the housing 1 after being fixedly connected.

As another embodiment, the electric operation first casing 82, the electric operation second casing 83, and the partition 81 may be omitted, and the components may be directly mounted in the casing 1, and may be positioned and mounted by a structure on a side wall of the casing 1. Or only set up the baffle 81, the baffle 81 can dismantle with shell 1 and be connected be equipped with motor fixed knot on the baffle 81 and construct, can install shell 1 again after assembling motor 31 and baffle 81 in, it is fixed with motor 31 through baffle 81 and shell 1 cooperation, convenient assembling is efficient, and the reliability is high.

Preferably, referring to fig. 1 and 5-6, the housing 1 includes a first housing 11 and a second housing 12, where the first housing 11 and the second housing 12 are fastened relatively to form the housing 1 of the switch, and the first housing 11 and/or the second housing 12 are provided with a pressing rib that presses the partition 81 or the electric operating housing 8 when fastened, and/or the first housing 11 and/or the second housing 12 are provided with a fastening structure that is in clamping fit with the partition 81 or the electric operating housing 8, so as to realize detachable installation of the housing 1 and the partition 81 or the electric operating housing 8. The buckling direction of the first housing 11 and the second housing 12 of this embodiment is the first direction, i.e., the height direction of the housing 1.

Preferably, as shown in fig. 5-6 and 7-8, in a preferred embodiment in which the output gear 33 of the present embodiment is in driving engagement with the lever 51, the output gear 33 of the present embodiment is in driving engagement with the lever 51 coaxially disposed. The lever 51 is provided with a first connecting hole 512 for connecting the connecting rod 52, at least one limiting protrusion 511 matched with the output gear 33 and a first protrusion 510, the limiting protrusion 511 is convexly arranged on the end face of the lever 51, which is close to one end of the output gear 33, the first protrusion 510 is convexly arranged on the radial side wall of the connecting rod 52, and the lever 51 triggers the micro switch 41 to switch state when rotating to the driving switch closing and/or driving switch breaking position.

The output gear 33 is provided with at least one driving protrusion 330 matched with the lever 51, the driving protrusion 330 is arranged on the end surface of the output gear 33 close to one end of the lever 51, and a first tooth 331 is arranged on the radial side wall of the output gear 33 and is used for being meshed with the transmission gear 32. The output gear 33 and the lever 51 are coaxially assembled, the driving protrusion 330 and the limiting protrusion 511 are arranged in a staggered mode, the transmission gear 32 drives the output gear 33 to rotate through the first tooth 331, and when the output gear 33 rotates, the driving protrusion 330 and the limiting protrusion 511 are limited, the lever 51 is driven to rotate, and the lever 51 is driven to rotate between a lever closing position and a lever breaking position. The lever 51 of this embodiment is provided with two limiting protrusions 511 on both sides of the rotation axis of the lever 51, the driving protrusion 330 drives the lever 51 to rotate towards the lever closing position by one limiting protrusion 511, and drives the lever 51 to rotate towards the lever breaking position by the other limiting protrusion 511, and the rotation direction of the lever 51 towards the lever closing position is opposite to the rotation direction of the lever breaking position. The output gear 33 is also provided with two driving protrusions 330, although it is also possible to provide one driving protrusion 330 and one limiting protrusion 511.

The connecting rod 52 is a U-shaped rod, one end of which is inserted into the first connecting hole 512 of the lever 51, and the other end of which is inserted into the second connecting hole 533 of the contact support 53, and the two are linked.

The output gear 33 of the present embodiment is disposed coaxially with the lever 51, so that the occupied space can be reduced. As another embodiment, the output gear 33 and the lever 51 may not be coaxially disposed, for example, the axes of the output gear 33 and the lever 51 may be disposed in parallel with each other, the output gear 33 may be radially provided with a first gear 331, and the lever 51 may be radially provided with a lever gear, and the first gear 331 and the lever gear may be engaged with each other for transmission. In addition, as other embodiments, the output gear 33 and the lever 51 may be driven by gear engagement, and the first gear 331 of the output gear 33 and/or the lever gear of the lever 51 may be a sector gear, and when the lever 51 is driven to rotate to the lever closing position or the lever breaking position, the output gear 33 and the lever 51 may be disengaged, so that the micro switch 41 may not be provided, and the control of closing and breaking may be achieved by the control circuit driving the motor to rotate for a preset time according to the control signal.

Preferably, in order to achieve accurate control of closing and opening, the control circuit of the electric operating mechanism 3 is further provided with at least one micro switch 41, and when the output gear 33 or the lever 51 or the contact support 53 rotates to a position for closing and/or opening the driving switch, the micro switch 41 is triggered to switch the state so as to monitor the position state of the gear set 30 and/or the transmission mechanism 5 and/or the contact support 53, or monitor the closing state or opening state of the switch. In this embodiment, when the switch is in the closed state, i.e. the lever 51 is rotated to the lever closed position, the first protrusion 510 on the lever 51 acts on the micro switch 41. As other embodiments, the output gear 33 or the contact support 53 may act on the micro switch 41. As another embodiment, two micro switches 41 may be provided, when the switch is in the closed state, the gear set 30 and/or the transmission mechanism 5 and/or the contact support 53 acts on one micro switch 41 to avoid the other micro switch 41, and when the switch is in the breaking state, the gear set 30 and/or the transmission mechanism 5 and/or the contact support 53 acts on the other micro switch 41 to avoid the one micro switch 41.

As shown in fig. 3-4 and 9, the moving contact assembly comprises a contact support 53, a moving contact 530 and a contact spring 535, wherein the moving contact 530 is connected with the contact support 53 through the contact spring 535 to realize over travel. The contact support 53 of this embodiment is provided with a contact cavity 534, the moving contact 530 extends into the contact cavity 534, and one end provided with the moving contact extends out of the contact cavity 534, and a contact spring 535 is installed in the contact cavity 534 and acts between the moving contact 530 and the side wall of the contact cavity 534 to fix the moving contact 530. Of course, as other embodiments, the contact support 53 is not provided with the contact cavity 534, but it is also possible to provide a corresponding clamping structure to connect with the moving contact 530. The movable contact 530 of the present embodiment includes two movable contact pieces 531, and the movable contact pieces 531 are provided with movable contacts, however, as other embodiments, the movable contact 530 may be provided with only one movable contact piece 531 and one movable contact.

The contact support 53 is rotatably mounted in the housing 1, a rotation mounting structure 532 is arranged at the axial end of the contact support 53, and the rotation mounting structure 532 is a rotation protrusion or a rotation groove; the radial direction of the contact support 53 is provided with a contact cavity 534 penetrating through the contact support 53, two ends of the contact cavity 534 are respectively provided with a first opening 5341 and a second opening 5343, a cavity side wall protrusion 5342 is arranged in the contact cavity 5341, the cavity side wall protrusion 5342 is close to the first opening 5341, the middle part of the movable contact piece 531 is abutted against the cavity side wall protrusion 5342 under the action of the contact spring 535, and the movable contact piece 531 can rotate based on the cavity side wall protrusion 5342 as a fulcrum.

As shown in fig. 3-6, a preferred embodiment of the first terminal 21 and the second terminal 22. The first terminal 21 is integrally formed, a first end of the first terminal 21 is connected with the connecting terminal 23 or extends out of the housing 1 to serve as a wire inlet end, a second end of the first terminal is connected with the moving contact 530 through a flexible wire, and the first terminal 21 is further provided with a first striking plate 213, and the first striking plate 213 extends from a position close to the breaking position of the moving contact 530 to the direction of the arc extinguishing chamber 60 of the arc extinguishing mechanism 6.

The first end of the second terminal 22 is connected with the connecting terminal 23 or extends out of the housing 1 to serve as a wire outlet, the second end of the second terminal 22 is provided with a fixed contact to serve as a fixed contact 220, namely, the fixed contact 220 and the second terminal 22 are integrally formed, the second terminal 22 is further provided with a second arc striking piece 223, the second arc striking piece 223 extends from the fixed contact 220 to the direction of the arc extinguishing chamber 60 of the arc extinguishing mechanism 6, the first terminal 21 and the second terminal 22 connected with the moving contact 530 and the fixed contact 220 are directly used as wire inlet and outlet ends, the second terminal 22 and the fixed contact 220 are integrally formed, the whole circuit is simple, and the assembly is convenient. It should be noted that, as other embodiments, the first terminal 21 is electrically connected to the moving contact 530, and the second terminal is electrically connected to the fixed contact 220 and is also possible to be integrally formed.

The first striking piece 213 and the second striking piece 223 are respectively and closely arranged at two sides of the arc extinguishing chamber 60 in the second direction, and respectively introduce the electric arcs generated when the moving and static contacts are disconnected into the arc extinguishing chamber 60, so as to realize quick arc extinguishing. The plane where the first striking plate 213 and the second striking plate 223 are located is basically parallel to the plane where the arc extinguishing grid plate of the arc extinguishing chamber 60 is located, the second striking plate 223, the arc extinguishing chamber 60 and the first striking plate 213 are basically arranged in sequence along the length direction of the housing 1, and the plane where the swinging direction of the moving contact 530 is located is parallel to the length direction of the housing 1.

Between the first end and the second end of the first terminal 21 is a first connection piece 214, and between the first end and the second end of the second terminal 22 is a second connection piece 224, where the first connection piece 214 and the second connection piece 224 are arranged in parallel at intervals. Preferably, the first terminal 21 is further provided with a shunt as a current sampling device integrally connected between the first end and the second end of the first terminal 21, i.e. the shunt is part of the first connection piece 214.

Specifically, the first terminal 21 includes a first outer tab 211, a first connecting tab 214, a first inner tab 212 and a first striking tab 213, which are sequentially connected and serve as a first end, the first inner tab 212 is bent and connected with one end of the first connecting tab 214, the first inner tab 212 is electrically connected with the moving contact 530, the first inner tab 212 is electrically connected with two moving contact tabs 531 through two flexible wires respectively, the first outer tab 211 is bent and connected with the other end of the first connecting tab 214, the first outer tab 211 is connected with the connecting terminal 23, the first striking tab 213 is connected with one side edge of the first inner tab 212, and the first striking tab 213, the first inner tab 212 and the first outer tab 211 are parallel and perpendicular to the plane where the first connecting tab 214 is located. The second terminal 22 includes a second outer tab 221 as a first end, a second connecting tab 224, a second inner tab 222 as a second end, and a second striking tab 223, which are sequentially connected, wherein the second inner tab 222 is bent and connected with one end of the second connecting tab 224, the second outer tab 221 is bent and connected with the other end of the second connecting tab 224, the second outer tab 221 is connected with the connecting terminal 23, the second striking tab 223 is connected with one side edge of the second inner tab 222, the planes of the second striking tab 223, the second inner tab 222 and the second outer tab 221 are parallel, and are perpendicular to the plane of the second connecting tab 224, the second inner tab 222 is electrically connected with the fixed contact 220, and preferably, two fixed contacts are disposed on the second inner tab 222 as the fixed contact 220.

The arc-extinguishing chamber 60 comprises an arc-extinguishing chamber and a plurality of arc-extinguishing gate sheets arranged in the arc-extinguishing chamber, wherein the plurality of arc-extinguishing gate sheets are stacked at intervals, an arc-extinguishing notch is arranged at one end close to the moving contact 530, one end of the arc-extinguishing chamber 60 close to the moving contact is an air inlet end, the other end of the arc-extinguishing chamber is an air outlet end, and the stacking direction of the plurality of arc-extinguishing gate sheets is the height direction of the arc-extinguishing chamber 60. The first striking plate 213 and the second striking plate 223 are respectively disposed at two sides of the height of the arc extinguishing chamber 60 in the second direction. Preferably, the first outer tab 211, the first striking tab 213, the arc extinguishing chamber 60, the second striking tab 223 and the second outer tab 221 are arranged at intervals side by side in the second direction, and the length extension directions are consistent and all extend along the first direction. The first striking plate 213 and the first inner plate 212 are integrally arranged opposite to the first outer plate 211, and the first connecting plate 214 is connected between the first inner plate 212 and the first outer plate 211 to enable the first terminal 21 to be in an approximate U-shaped structure; the second striking piece 223 and the second inner tab 222 are integrally opposite to the second outer tab 221, the second connecting piece 224 is connected between the second inner tab 222 and the second outer tab 221 to enable the second terminal 22 to be in a similar U-shaped structure, the first terminal 21 is integrally provided with the first striking piece 213, the second terminal 22 is integrally provided with the fixed contact 220 and the second striking piece 223, and the structure is simple and convenient to assemble. The first wiring terminal 21 and the second wiring terminal 22 are arranged on two sides of the arc extinguishing chamber at intervals side by side, so that a U-shaped layout is formed in a loop from the inlet wire end to the outlet wire end of the switch, the whole circuit is positioned at one end of the switch, and the loop structure is compact.

Preferably, as shown in fig. 4-5, the electric operating mechanism 3 and the moving contact assembly of the embodiment are installed on the electric operating shell 8, and the driving structure formed by the electric operating mechanism 3 and the moving contact assembly firstly forms a driving module and then is installed in the shell 1, so that the reliability is high, the assembly efficiency is high, and the automatic assembly is convenient. Specifically, the driving module comprises an electric operation shell 8, an electric operation mechanism 3 and a moving contact assembly, wherein the electric operation mechanism 3 comprises a motor 31, a gear set 30 and a transmission mechanism 5, the motor 31 drives the transmission mechanism 5 through the gear set 30, the transmission mechanism 5 is connected with the moving contact assembly, and the moving contact assembly comprises a contact support 53 and a moving contact 530 arranged on the contact support 53; the motor 31, the gear set 30 and the transmission mechanism 5 are arranged in the electric operation shell 8, the contact support 53 is arranged in the electric operation shell 8 or partially extends out of the electric operation shell 8, and one end of the moving contact 530 provided with a moving contact point extends out of the electric operation shell 8.

Preferably, the electric operating mechanism 3 further comprises a control circuit comprising a circuit board 40 and a micro-switch 41, said control circuit also being arranged inside the electric operating housing 8.

As another preferred embodiment, the motor 31 is disposed outside one end of the electric operating housing 8, and one end of the electric operating housing 8 is provided with a motor fixing structure for fixing the motor 31, so that the overall volume of the module can be effectively reduced, and the wiring and the assembly of the motor 31 are facilitated.

Preferably, the electric operation housing 8 of the present embodiment includes an electric operation first housing 82 and an electric operation second housing 83, the electric operation first housing 82 and the electric operation second housing 83 are relatively buckled to form a module accommodating cavity, a partition board 81 is arranged in the electric operation housing 8 to partition the module accommodating cavity into an electric operation first space and an electric operation second space, an electric operation first space is formed between the partition board 81 and the electric operation first housing 82, an electric operation second space is formed between the partition board 81 and the electric operation second housing 83, a gear set 30 is arranged in the electric operation first space, and a transmission mechanism 5, a moving contact assembly and a control circuit are arranged in the electric operation second space. Specifically, the plurality of transmission gears 32, the output gears 33 are installed in an electrically operated first space on one side of the partition 81, and the lever 51, the link 52, the contact support 53, and the moving contact 530 are installed in an electrically operated second space on the other side of the partition 81.

Preferably, the partition 81 and/or the electrically operated first casing 82 and/or the electrically operated second casing 83 and/or the side wall of the casing 1 opposite to the partition 81 is provided with a rotation hole or a rotation groove structure for installing the rotation shaft of the transmission gear 32. Corresponding positions of the partition board 81, the electric operation first shell 82 and the electric operation second shell 83 are provided with assembly structures, and the assembly structures are assembly holes fixed by buckles or rivets or screws.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims (10)

1. The utility model provides a switch, includes electric operating mechanism (3), leakage current collection system (9), at least one phase circuit and a neutral pole circuit, phase circuit and neutral pole circuit all couple with leakage current collection system (9), and leakage current collection system (9) are equipped with leakage signal end (910), phase circuit includes moving contact subassembly, stationary contact (220), first wiring end (21) and second wiring end (22), electric operating mechanism (3) are connected with moving contact subassembly, moving contact subassembly is including setting up moving contact (530) on contact support (53), and first wiring end (21) and second wiring end (22) are connected with stationary contact (220) and moving contact (530) respectively, neutral pole circuit includes first neutral pole wiring end (24) and second neutral pole wiring end (25), its characterized in that: the electric operating mechanism (3) is provided with a control wiring terminal (310), the electric operating mechanism comprises a motor (31), a gear set (30) and a transmission mechanism (5), the motor (31) drives the transmission mechanism (5) through the gear set (30), the transmission mechanism (5) is connected with the contact support (53), and the movable contact (530) is driven to be contacted with and separated from the fixed contact (220).

2. The switch of claim 1, wherein: the neutral pole circuit is a through pole, namely, a first neutral pole terminal (24) and a second neutral pole terminal (25) are directly and electrically connected to form a circuit loop of the neutral pole circuit.

3. The switch of claim 2, wherein: the first neutral terminal (24) and the second neutral terminal (25) are integrally formed.

4. The switch of claim 1, wherein: the gear set (30) comprises an output gear (33), the transmission mechanism (5) comprises a lever (51) and a connecting rod (52), the lever (51) and the contact support (53) are rotatably arranged, the connecting rod (52) is connected between the lever (51) and the contact support (53), and the lever (51) is in driving fit with the output gear (33).

5. The switch of claim 1, wherein: the switch also includes a current collection device coupled to the phase circuit.

6. The switch of claim 1, wherein: the switch is provided with a communication terminal (110), and a control terminal (310) of the electric operating mechanism (3) and a leakage signal end (910) of the leakage current acquisition device (9) are connected with the communication terminal (110).

7. The switch of claim 1, wherein: the electric operating mechanism (3) is arranged at one end of the shell (1), the phase circuit and the neutral pole circuit are arranged at the other end of the shell (1), the first wiring end (21), the second wiring end (22), the first neutral pole wiring end (24) and the second neutral pole wiring end (25) are all arranged at the other end of the shell (1), and the first direction is from one end of the shell (1) provided with the electric operating mechanism (3) to the other end provided with the first wiring end (21), the second wiring end (22), the first neutral pole wiring end (24) and the second neutral pole wiring end (25).

8. The switch of claim 7, wherein: the circuit loops of the phase circuit and the circuit loops of the neutral pole circuit are overlapped along a third direction, the first wiring terminal (21) and the second wiring terminal (22) are arranged at intervals side by side along a second direction, the first neutral pole wiring terminal (24) and the second neutral pole wiring terminal (25) are arranged at intervals side by side along the second direction, the first wiring terminal (21) and the first neutral pole wiring terminal (24) are overlapped along the third direction, the second wiring terminal (22) and the second neutral pole wiring terminal (25) are overlapped along the third direction, and the first direction, the second direction and the third direction are mutually perpendicular.

9. The switch of claim 8, wherein: the motor (31) is arranged at one end of the shell (1), the gear set (30) and the transmission mechanism (5) are positioned between the moving contact assembly and the motor (31) in the first direction, and the first wiring terminal (21), the moving contact (530), the fixed contact (220) and the second wiring terminal (22) are sequentially arranged in the second direction.

10. The switch of claim 8, wherein: the electric operating mechanism (3) further comprises a control circuit, and the gear set (30), the transmission mechanism (5) and the control circuit are stacked along a third direction.