CN110931314A

CN110931314A - Composite switch and distribution box with same

Info

Publication number: CN110931314A
Application number: CN201910813248.2A
Authority: CN
Inventors: 孙巍巍
Original assignee: Tianjin Zhongli Shendun Electronics Technology Co Ltd
Current assignee: Tianjin Zhongli Shendun Electronics Technology Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-03-27

Abstract

The invention relates to a compound switch and a distribution box with the compound switch. The composite switch adopts a modularized split type design and comprises a protection module, a control module and a communication acquisition driving module, so that the problems of strong and weak current mixing areas, weak anti-interference performance, poor protection precision and potential safety hazards in the prior art are solved, the production, debugging and maintenance are more convenient, and the interchangeability, maintainability and production efficiency are further improved; the block terminal that is furnished with compound switch is convenient for block terminal production and maintenance through the modular design of each part, compound switch cooperation multiloop control terminal's use has reduced distribution box volume and outside and has walked the line, integrated level and intelligent degree are higher, the extension of being convenient for, can realize carrying out local and long-range protection to all return circuits, control, monitoring, managerial function, solve the complicated in disorder and the too big problem of box size of strong and weak electric connection among the prior art, the installation is dismantled more fast, promote whole block terminal product production and work efficiency.

Description

Composite switch and distribution box with same

Technical Field

The invention belongs to the technical field of distribution equipment, and relates to a composite switch and a distribution box with the same.

Background

The composite switch is switching equipment for switching on, switching off and switching off current under the condition of a normal conductive loop, is an important component in a power distribution system, is widely applied to power distribution places such as industrial, commercial and civil houses and the like, but along with the development of an intelligent power distribution and utilization technology, the traditional composite switch cannot meet the current requirement and is not suitable for intelligent control of power distribution on-off; and the traditional composite switch has the problems of incomplete strong current and weak current partition, poor anti-interference performance, higher discreteness, poor protection precision and incomplete power distribution protection function, so that the power distribution system still has potential safety hazards. In view of the above problems, the present invention discloses a compound switch to solve the above problems.

The composite switch disclosed in the Chinese patent application publication specification (application number 201920066628.X) is integrally designed, solves the problems of poor protection precision and incomplete protection and power distribution potential safety hazard existing in the traditional circuit breaker in a low-voltage power distribution system in the prior art to a certain extent, is suitable for frequent on-off control of circuits, can realize local or remote centralized monitoring and management of the composite switch, and obviously improves the power distribution safety and the intelligent power distribution control degree. However, the composite switch has a problem of a strong and weak electric mixing region, and the safety is not high enough; on the other hand, the composite switch adopts an integrated design, so that the interchangeability, the maintainability and the production efficiency are not high enough.

The distribution box is an important component of power management and electrical control, the traditional distribution box is generally characterized in that equipment such as a circuit breaker, a current transformer and the like is simply arranged in the distribution box body and can meet the requirement of a user on power distribution, but the traditional distribution box is not suitable for intelligent control on power distribution on-off because the requirement of the user on power distribution is improved increasingly along with the increasing requirement of the user on power distribution, and has the problems of complex structure, huge box body, high assembly and maintenance difficulty, complex wiring and messy lines, low production and working efficiency and inconvenience for large-batch quick production; on the other hand, the traditional distribution box has poor controllability and expandability, poor integration level and low intelligent degree, and various operation controls are not systematic enough and are difficult to meet the higher and higher requirements of users on power distribution in a centralized mode. Therefore, it is necessary to invent a novel distribution box equipped with a combination switch to solve the above problems.

The distribution box disclosed in the chinese patent application publication, CN208656230U (application No. 201820266831.7), through the modular design and the plug-in connection of the structures of the distribution box, makes the installation and connection of the circuit breaker, the current transformer and the control contactor more rapid and accurate, and does not need an additional complicated external connection line. However, in actual production, the wiring of the circuit breaker and the contactor is still too much, so that the structure of the circuit breaker and the contactor is not compact enough, the connection relation is relatively complex, and the distribution box is large in size and weight, less in expanded load channel and not high enough in system integration level.

Disclosure of Invention

The invention aims to provide a composite switch and a distribution box with the same, which are used for solving the problems of the existing composite switch and the existing distribution box, so that the composite switch and the distribution box are modularized in structure, small in size, multiple in branches, good in safety, high in integration level and intelligence degree, convenient to assemble, maintain, monitor and control, capable of effectively improving production and working efficiency, better in controllability and expandability and capable of meeting the higher and higher distribution requirements of users.

In order to achieve the above object, an embodiment of the present invention first provides a compound switch, which adopts a modularized split design and includes a protection module, a control module and a communication acquisition driving module, and performs a partition design on strong current and weak current of the compound switch, wherein the protection module mainly includes a strong current area and a mechanical driving part, the control module mainly includes an electromagnetic driving part area, and the communication acquisition driving module mainly includes a weak current acquisition control area; the protection module is in mechanical driving connection with the control module and is used for acquiring the on-off state of the handle; the communication acquisition driving module is in mechanical driving connection and/or electrical connection with the protection module, and the communication acquisition driving module is electrically connected with the control module through a plug-in terminal; the protection module is provided with a first wire pressing frame of an inlet wire port and connected with a load power supply, the control module is provided with a second wire pressing frame of an outlet wire port and connected with a load, and the communication acquisition driving module is provided with a first plug terminal and connected with external communication acquisition equipment.

Optionally, the first wire pressing frame and the second wire pressing frame may adopt one of crimping, plugging and clamping, but are not limited to these three forms.

The protection module comprises a handle, a top rod and a microswitch top rod; the lower end of the ejector rod is exposed out of the protective module shell by a section and is used for being in mechanical driving connection with the communication acquisition driving module, and the protective module shell is provided with an opening at one end of a fourth connecting piece and is used for being electrically connected with the communication acquisition driving module; the control module is provided with a microswitch, the microswitch is in driving connection with the handle through a microswitch ejector rod, the on-off state of the handle is fed back in real time, and the protection module and the control module are provided with necessary openings on corresponding contact surfaces; the communication acquisition driving module comprises a first plug terminal, a second plug terminal, a fifth connecting piece and a shifting fork; the shifting fork is in driving connection with the ejector rod through the ejector rod opening, and the ejector rod is driven to move up and down by means of rotation of the shifting fork; the fifth connecting piece is electrically connected with the fourth connecting piece and the second connecting piece; the communication acquisition driving module is electrically connected with the control module through the second plug terminal, and is used for acquiring and controlling signals of the control module. Optionally, the fifth connecting member is electrically connected with the fourth connecting member and the second connecting member in a manner of screw connection and/or plug-in connection.

In the composite switch, the protection module further comprises an electromagnetic release, a switch movable contact, a switch stationary contact, a bimetallic strip, a first driving mechanism, an auxiliary shifting block, a hook spring, a movable contact seat, a jumper bar, a buckle, a connecting shaft, a first connecting piece, an arc extinguishing grid and an arc striking plate; the switch movable contact corresponds to the switch fixed contact, and on-off control of current is realized through contact or separation of the switch movable contact and the switch fixed contact; the switch movable contact is electrically connected with the bimetallic strip; the switch stationary contact is electrically connected with the electromagnetic release and the arc extinguishing gate respectively; the ejector rod is in driving connection with the auxiliary shifting block, the auxiliary shifting block is in driving connection with the jumper bar, the jumper bar is in driving connection with the movable contact base, and the jumper bar is in driving connection with the bimetallic strip through the hook spring, so that the action of the jumper bar driven by the hook spring after the bimetallic strip is heated and deformed is realized; the movable contact seat is in driving connection with the switch movable contact, and the movable contact seat is in driving connection with the jumper bar; the jumper is in driving connection with the handle through a connecting shaft; the first connecting piece is electrically connected with the first wire pressing frame and the bimetallic strip respectively; the fourth connecting piece is electrically connected with the electromagnetic release; the arc striking plate is electrically connected with the bimetallic strip and is combined with the arc extinguishing grid to effectively reduce the phenomenon of arc striking and improve the safety of the composite switch.

In the composite switch, the control module further comprises a second driving mechanism, a fixed contact, a movable contact and a third connecting piece; the second driving mechanism is in driving connection with the movable contact; the movable contact corresponds to the fixed contact; the second connecting piece is electrically connected with the static contact; the third connecting piece is respectively and electrically connected with the static contact and the second wire pressing frame; the microswitch is in driving connection with the handle through the microswitch ejector rod.

In the composite switch, the communication acquisition driving module further comprises a composite switch current transformer, a first driving mechanism and a control circuit board; the composite switch current transformer is sleeved on at least one of the first connecting piece, the second connecting piece, the third connecting piece, the fourth connecting piece and the fifth connecting piece; the composite switch current transformer is connected with the control circuit board to realize the acquisition of current signals; the control circuit board is electrically connected with the first driving mechanism and/or the second driving mechanism to realize the action control of the first driving mechanism and/or the second driving mechanism; the shifting fork corresponds to the first driving mechanism and/or the ejector rod to realize driving connection of the first driving mechanism and/or the ejector rod; the control circuit board is electrically connected with the microswitch through the second plug terminal, and when the composite switch is switched on and off, signals can be transmitted to the control circuit board through the microswitch, so that the switching-on and switching-off state of the composite switch can be monitored in real time, and monitoring and management of managers are facilitated.

In the compound switch, the second driving mechanism comprises a static iron core, a coil and a movable iron core, and the movable iron core is in driving connection with the movable contact. Optionally, when the movable iron core is adsorbed by the static iron core, the movable contact and the static contact are closed; when the movable iron core is disconnected by the static iron core, the movable contact and the static contact are disconnected; or in another mode, when the static iron core adsorbs the movable iron core, the movable contact static contact is disconnected; when the movable iron core is disconnected by the static iron core, the movable contact and the static contact are closed. For example, the movable contact and the fixed contact are in a closed state, when the movable contact and the fixed contact are required to be disconnected, the coil is electrified to pulse current to enable the movable iron core to move so as to drive the movable contact and the fixed contact to be disconnected, uninterrupted power supply is not required to be carried out on the coil, continuous disconnection of the movable contact and the fixed contact can be realized, and waste of electric energy is effectively avoided; when the movable contact and the fixed contact are required to be closed, the coil is connected with reverse pulse current to enable the movable iron core to move so as to drive the movable contact and the fixed contact to be connected, meanwhile, the fixed iron core adsorbs the movable iron core, uninterrupted power supply is not required to be carried out on the coil, the movable contact and the fixed contact can be continuously closed, and waste of electric energy is effectively avoided. For another approach: when the static iron core adsorbs the movable iron core, the movable contact and the static contact are disconnected; when the movable iron core is disconnected by the static iron core, the movable contact and the static contact are closed, the principle is similar to that described above, and the details are not repeated. Therefore, the composite switch can be suitable for frequent on-off control of a circuit, meanwhile, the continuous power supply is not needed to keep on or off, the waste of electric energy is effectively avoided, the on-off is not needed to be controlled manually, the service life of the composite switch is not influenced, the intelligent control of the composite switch can be realized, the intelligent control degree of power distribution is improved, other additional breaking devices are not needed, and the space can be saved.

As a further improvement of the composite switch of the present invention, the control circuit board is provided with a first plug terminal and a second plug terminal. Optionally, the first plug terminal and the second plug terminal may be plugs or sockets, and may be at least one of an RS485 plug terminal, an RS232 plug terminal, a USB plug terminal, a network port, or a ZigBee wireless module; therefore, signals of the control circuit board, the first driving mechanism, the second driving mechanism, the micro switch or the current transformer can be output, or control signals can be input into the control circuit board, the first driving mechanism, the second driving mechanism, the micro switch or the current transformer. The composite switch can be in communication connection with external equipment through the first plug terminal, and can be connected with the external equipment such as a processor, a power distribution terminal, a monitoring host, an upper computer and the like to realize local or remote centralized monitoring and management on the composite switch, so that current and voltage signals are analyzed digitally through the external equipment, when an abnormality occurs, a circuit can be cut off in real time, the safety of power distribution equipment and electric equipment is protected, the problems of poor protection precision and incomplete protection and power distribution potential safety hazard existing in the traditional circuit breaker are solved, and the accurate and comprehensive protection of power distribution is realized; various power utilization conditions can be set according to the requirements of users to realize the control of the on-off of the composite switch; the intelligent control of the composite switch and the intelligent degree of power distribution control are improved.

Optionally, the contact surfaces of the shells, which are connected in pairs, of the protection module, the control module and the communication acquisition driving module can be tightly connected through at least one of a concave-convex part, a guide rail, a plug pin and a screw in a corresponding shape, so that the modules are prevented from sliding in three axial directions, and reliable connection is realized.

The embodiment of the invention also provides a distribution box with the composite switch, which comprises a box body and a box door, wherein the box body is provided with at least one wire inlet and at least one wire outlet, the wire inlet and the wire outlet are generally positioned at the top or the bottom or the left side and the right side of the box body and can be arranged differently according to the requirements of users, and the box body is connected with the box door through hinges so that the box door can rotate within a certain angle range; the box door is provided with a display screen, the display screen is used for displaying power supply information and realizing the setting of human-computer interaction parameters, and the display screen is also provided with a remote communication interface to realize the remote monitoring control of power distribution; the box body is also provided with a fuse, a DC power supply, an incoming line breaker, an incoming line copper bar, an incoming line branching terminal, a PE branching terminal, a composite switch and a multi-loop control terminal; the display screen is electrically connected with the DC power supply and is connected with the multi-loop control terminal through a communication cable so as to read and control the multi-loop control terminal and the incoming line breaker; at least one path of the composite switch is electrically connected with the multi-loop control terminal through a first plug-in terminal, and the composite switch is clamped with the multi-loop control terminal through a clamp; the first wire pressing frame of the composite switch is electrically connected with the wire outlet end of the wire inlet and distribution terminal, the second wire pressing frame of the composite switch is connected with a load, the load is unequal from 1 path to multiple paths as required, and at least one group of multi-loop control terminals can be arranged as required; the fuse is connected to a circuit between the incoming line breaker and the multi-loop control terminal and provides protection for the voltage collected by the multi-loop control terminal; any phase voltage of the outgoing line of the circuit breaker is converted into DC direct current through a DC power supply to be output, and necessary secondary DC power supplies are respectively provided for the multi-loop control terminal, the weak electric control module and the display screen; the circuit breaker outlet end is connected with an inlet wire distributing terminal through an inlet wire copper bar and is connected with at least one path of composite switch after being distributed; the PE distributing terminal is electrically connected with the PE ground of the box body, so that the box body is well grounded.

The distribution box provided by at least one embodiment of the invention further comprises a current transformer and a weak electric control module, wherein the current transformer is electrically connected with the incoming line breaker and the incoming line copper bar and is electrically connected with the weak electric control module, the current transformer can also be installed at the input end of the incoming line breaker and is used for detecting current signals of a main line and transmitting signals to the weak electric control module, relevant current information is displayed on a display screen through analysis and calculation, the weak electric control module is in communication connection with the display screen and the multi-loop control terminal and is electrically connected with the DC power supply and the incoming line breaker, and information collection of each module unit is mainly realized.

The distribution box provided by at least one embodiment of the invention further comprises a surge protector, wherein incoming lines of the surge protector are taken from the incoming line copper bar and the N branching terminal, and outgoing lines PE of the surge protector are connected to the PE branching terminal and used for lightning protection of the distribution box.

The distribution box provided by at least one embodiment of the invention further comprises a zero sequence transformer and a multifunctional fireproof detector, wherein the zero sequence transformer is sleeved on a line between the incoming line end and the incoming line breaker and is electrically connected with the weak current control module; the multifunctional fireproof detector is in communication connection with the weak electric control module and the display screen. The zero sequence transformer is sleeved on a line between the incoming line end and the incoming line breaker and is electrically connected with the weak current control module, and is used for outputting zero sequence current on the secondary side of the zero sequence transformer when detecting abnormality in the circuit, so that the weak current control module of the connected zero sequence transformer outputs an alarm signal; the power supply of the multifunctional fire detector is taken from any one of three-phase voltages and is in communication connection with the weak electric control module and the display screen.

Optionally, the multifunctional fire detector comprises at least one of: multifunctional fire detector, fault arc detector and temperature sensor.

The distribution box provided by at least one embodiment of the invention further comprises a self-contained power supply, wherein the self-contained power supply is electrically connected with the weak electric control module, the display screen and the multi-loop control terminal respectively, so as to provide a standby working power supply for the weak electric control module, the display screen and the multi-loop control terminal when power failure occurs outside, ensure that main modules of the distribution box work normally, and reduce and avoid power failure loss.

The distribution box provided by at least one embodiment of the invention further comprises a partition board, the partition board is arranged on the box body through the supporting frame, unit modules are convenient to install, and a gap between the partition board and the rear wall of the box body can be provided with wiring.

At least one embodiment of the present invention provides a power distribution box further comprising a support bracket for mechanically connecting the rear wall of the box body to the partition and securing the partition for mounting the associated module.

Optionally, the display screen comprises at least one of: touch screen, LCD screen, LED screen, OLED screen.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

Fig. 1 is a schematic diagram of an internal structure of a composite switch according to a first embodiment of the present invention;

fig. 2 is a schematic front view of a composite switch according to a first embodiment of the present invention;

fig. 3 is an isometric view of a hybrid switch according to a first embodiment of the invention;

fig. 4 is a schematic front view of a composite switch control module according to a first embodiment of the present invention;

fig. 5 is an isometric view of a hybrid switch control module according to a first embodiment of the present invention;

fig. 6 is a schematic front view of a composite switch protection module according to a first embodiment of the present invention;

fig. 7 is an isometric view of a hybrid switch protection module according to a first embodiment of the present invention;

fig. 8 is a left side view schematically illustrating a composite switch protection module according to a first embodiment of the present invention;

fig. 9 is a schematic front view of a composite switch communication acquisition driving module according to a first embodiment of the present invention;

fig. 10 is an isometric view of a combined switch communication acquisition driving module according to a first embodiment of the present invention;

fig. 11 is a schematic structural diagram of a distribution box equipped with a combination switch according to a second embodiment of the present invention;

fig. 12 is a schematic structural diagram of a distribution box equipped with a combination switch according to a third embodiment of the present invention;

fig. 13 is a schematic structural view of a distribution box equipped with a combination switch according to a fourth embodiment of the present invention;

fig. 14 is a schematic structural diagram of a distribution box equipped with a combination switch according to a fifth embodiment of the present invention;

fig. 15 is a schematic structural view of a distribution box equipped with a combination switch according to a sixth embodiment of the present invention;

fig. 16 is a schematic structural view of a distribution box equipped with a combination switch according to a seventh embodiment of the present invention;

fig. 17 is a schematic structural diagram of a box body of the distribution box equipped with the combination switch according to an eighth embodiment of the present invention;

fig. 18 is a schematic structural diagram of a door of the distribution box equipped with the combination switch according to an eighth embodiment of the present invention;

in the figure:

1. a door lock; 2. a box door; 3. a display screen; 4. a weak electric control module; 5. a self-contained power source; 6. a zero sequence transformer; 7. a fuse; 8. a DC power supply; 9. a multifunctional fire detector; 10. an incoming line breaker; 11. A partition plate; 12. a current transformer; 13. leading in a copper bar; 14. a surge protector; 15. an incoming line branching terminal; 16. PE branch terminals; 17. a composite switch; 1701. a housing; 170101, a contactor housing; 170102, a circuit breaker housing, 170103, a controller housing; 1702. a handle; 1703. a jumper bar; 1704. an electromagnetic release; 1705. Switching a movable contact; 1706. a switch stationary contact; 1707. an arc chute; 1708. an arc striking plate; 1709. a bimetal; 1710. a composite switch current transformer; 1711. a first drive mechanism; 1712. buckling; 1713. a movable contact base; 1714. a control circuit board; 1715. a first plug terminal; 1716 a second drive mechanism; 171601, a movable iron core; 171602, a coil; 171603, a movable iron core; 1717. a second plug terminal; 1718. a stationary contact; 1719. A movable contact; 1720. a first connecting member; 1721. a second connecting member; 1722. a third connecting member; 1723. a microswitch; 1724. a clip; 1725. a first wire pressing frame; 1726. a second wire pressing frame; 1727. a connecting shaft; 1728. Hooking a spring; 1729. a top rod; 1730. an auxiliary shifting block; 1731. a shifting fork; 1732. a microswitch push rod; 1733. A first connecting fastener; 1734. a second connecting fastener; 1735. a fourth connecting member; 1736. a fifth connecting member; 1750. a control module; 175001, a control module recess; 175002, control module projection; 175003, a control module base; 175004, microswitch opening; 1751. a protection module; 175101, protection module first projection; 175102, protection module base, 175103, protection module second projection; 175104, a top rod opening of the microswitch; 1752. a communication acquisition driving module; 175202, control module base socket; 175203, a first recess of the communication acquisition drive module; 175204, a second concave part of the communication acquisition driving module; 175205, protection module base socket; 175206, a second connection point; 175207, a first connection point; 175208, a mandril opening; 18; a C-shaped support frame; 19. a box body; 20. a multi-loop control switch; 21. n branch terminals; 22. a support frame; 23. and (7) a hinge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. In the embodiment, the positions of the described objects in the distribution box and/or the composite switch, such as "up", "down", "left" and "right", are only used for indicating the relative positional relationship, and when the absolute position of the described object is changed, the relative positional relationship may also be changed accordingly.

The following describes in detail a distribution box equipped with a combination switch according to an embodiment of the present invention with reference to the accompanying drawings.

Example one

Fig. 1 to 10 show a schematic diagram of the structure of the composite switch of the first embodiment and schematic diagrams of respective modules. As shown in fig. 1, the composite switch according to the first preferred embodiment of the present invention includes a protection module 1751, a control module 1750, and a communication acquisition driver module 1752; the protection module 1751 comprises a handle 1702, a fourth connecting piece 1735, a push rod 1729, a micro switch push rod 1732 and a micro switch push rod opening 175104; the protection module 1751 is provided with a microswitch push rod opening 175104, one end of the push rod 1729 is exposed out of the shell of the protection module 1751, and the shell of the protection module 1751 is provided with an opening at one end of a fourth connecting piece 1735; the control module 1750 comprises a microswitch 1723 and a second connecting piece 1721; the microswitch 1723 passes through the microswitch opening 175004 and the microswitch push rod opening 175104 and is in driving connection with the handle 1702 through a microswitch push rod 1732; the communication acquisition driving module 1752 comprises a first plug terminal 1715, a second plug terminal 1717, a fifth connecting piece 1736 and a shifting fork 1731; the shifting fork 1731 is in driving connection with the top rod 1729 through a top rod opening 175208, and the top rod 1729 is driven to move up and down by means of rotation of the shifting fork 1731; the fifth connection member 1736 is electrically connected to the fourth connection member 1735 at a first connection point 175207 by a first connection fastener 1733, and the fifth connection member 1736 is electrically connected to the second connection member 1721 at a second connection point 175206 by a second connection fastener 1733; the communication acquisition driving module 1752 is electrically connected with the control module 1750 through a second plug terminal 1717, and acquires and controls signals of the control module.

In the above compound switch, the protection module 1751 further includes an electromagnetic trip 1704, a switch moving contact 1705, a switch stationary contact 1706, a bimetallic strip 1709, a first driving mechanism 1711, an auxiliary shifting block 1730, a hook spring 1728, a moving contact base 1713, a trip bar 1703, a buckle 1712, a connecting shaft 1727, a first connecting member 1720, an arc extinguishing grid 1707 and an arc striking plate 1708; the switch movable contact 1705 corresponds to the switch fixed contact 1706, and on-off control of current is realized through contact or separation of the switch movable contact 1705 and the switch fixed contact 1706; the switch movable contact 1705 is electrically connected with the bimetal 1709; the switch static contact 1706 is electrically connected with the electromagnetic release 1704 and the arc extinguishing grid 1707 respectively; the push rod 1709 is in driving connection with an auxiliary shifting block 1730, the auxiliary shifting block 1730 is in driving connection with the jumper bar 1703, the jumper bar 1730 is in driving connection with the movable contact base 1713, and the jumper bar 1703 is in driving connection with the bimetallic strip 1729 through the hook spring 1728, so that the action of the jumper bar 1703 driven by the hook spring 1728 after the bimetallic strip 1729 is deformed by heat is realized; the movable contact base 1713 is in driving connection with the switch movable contact 1705, and the movable contact base 1713 is in driving connection with the jumper 1703; the jumper 1703 is in driving connection with the handle 1702 through a connecting shaft 1727; the first connector 1720 is electrically connected to the first wire pressing frame 1725 and the bimetal 1709 respectively; the fourth connection 1735 is electrically connected to the electromagnetic trip 1704; the arc striking plate 1708 is electrically connected with the bimetallic strip 1709 and is used in combination with the arc extinguishing grid 1707 to effectively reduce the phenomenon of arc striking and improve the safety of the composite switch.

In the above compound switch, the control module 1750 further includes a second driving mechanism 1716, a stationary contact 1718, a movable contact 1719, and a third connecting member 1722; the second driving mechanism 1716 is in driving connection with the movable contact 1719; the movable contact 1719 corresponds to the fixed contact 1718; the second connecting piece 1721 is electrically connected with the stationary contact 1718; the third connecting piece 1722 is electrically connected to the stationary contact 1718 and the second wire pressing frame 1726 respectively; the second driving mechanism 1716 comprises a fixed iron core 171601, a coil 171602 and a movable iron core 171603, wherein the movable iron core 171603 is in driving connection with the movable contact 1719; the microswitch 1723 is in driving connection with the handle 1702 through the microswitch push rod 1732, and collects the on-off state of the handle 1702 in real time.

In the compound switch, the communication acquisition driving module 1752 further includes a compound switch current transformer 1710, a first driving mechanism 1711 and a control circuit board 1714; the composite switch current transformer 1710 is sleeved on at least one of the first connecting piece 1720, the second connecting piece 1721, the third connecting piece 1722, the fourth connecting piece 1735 and the fifth connecting piece 1736; the composite switch current transformer 1710 is connected with the control circuit board 1714 to realize the collection of current signals; the control circuit board 1714 is electrically connected with the first driving mechanism 1711 and/or the second driving mechanism 1716, so that the action control of the first driving mechanism 1711 and/or the second driving mechanism 1716 is realized; the shifting fork 1731 corresponds to the first driving mechanism 1711 and/or the top rod 1729, so that the first driving mechanism 1711 and/or the top rod 1729 are in driving connection; the control circuit board 1714 is electrically connected with the microswitch 1723 through a second plug terminal 1717, when the composite switch is switched on and switched off, a signal can be transmitted to the control circuit board 1714 through the microswitch 1723, so that the switching-on and switching-off state of the composite switch can be monitored in real time, and monitoring and management of managers are facilitated.

As a further improvement of the compound switch of the present invention, the second driving mechanism 1716 includes a stationary core 171601, a coil 171602 and a movable core 171603, and the movable core 171603 is drivingly connected to the movable contact 1719. Alternatively, when the stationary core 171601 attracts the movable core 171603, the movable contact is closed with the stationary contact 1718; when the stationary core 171601 breaks the movable core 171603, the movable contact 1719 and the stationary contact 1718 are separated; continuous breaking of the movable contact 1719 and the fixed contact 1718 can be realized without continuously supplying power to the coil 171602, so that waste of electric energy is effectively avoided; therefore, the composite switch can be suitable for frequent on-off control of a circuit, meanwhile, the continuous power supply is not needed to keep on or off, the waste of electric energy is effectively avoided, the on-off is not needed to be controlled manually, the service life of the composite switch is not influenced, the intelligent control of the composite switch can be realized, the intelligent control degree of power distribution is improved, other additional breaking devices are not needed, and the space can be saved.

As a further improvement of the compound switch of the present invention, the control circuit board 1714 is provided with a first plug terminal 1715 and a second plug terminal 1717. Optionally, the first plug terminal 1715 and/or the second plug terminal 1717 may be a plug or a socket, and may be at least one of an RS485 plug terminal, an RS232 plug terminal, a USB plug terminal, a network port, or a ZigBee wireless module; thus, signals of the control circuit board 1714, the first drive mechanism 1711, the second drive mechanism 1716, the microswitch 1723, or the current transformer 1710 can be output, or control signals can be input to the control circuit board 1714, the first drive mechanism 1711, the second drive mechanism 1716, the microswitch 1723, or the current transformer 1710. The composite switch can be in communication connection with external equipment through the plug-in terminal, and can be connected with external equipment such as a processor, a power distribution terminal, a monitoring host, an upper computer and the like to realize local or remote centralized monitoring and management on the composite switch, so that current and voltage signals are analyzed digitally through the external equipment, when an abnormality occurs, a circuit can be cut off in real time, the safety of power distribution equipment and electric equipment is protected, the problems of poor protection precision and incomplete protection and power distribution potential safety hazard existing in the traditional circuit breaker are solved, and the accurate and comprehensive protection of power distribution is realized; various power utilization conditions can be set according to the requirements of users to realize the control of the on-off of the composite switch; the intelligent control of the composite switch and the intelligent degree of power distribution control are improved.

Optionally, the protection module base socket 175205 is connected with the protection module base 175102, and the communication acquisition drive module second recess 175204 is connected with the protection module second projection 175103; a control module socket 175202 is connected to the control module base 175003, and the communications acquisition drive module first recess 175203 is connected to the controller protrusion 175002; the control module recess 175001 is connected with the protection module first protrusion 175101. Concave-convex parts, bolts, screws and the like in corresponding shapes are arranged on the contact surfaces of the protection module, the control module and the communication acquisition driving module which are connected in pairs to realize the tight and reliable connection among the contact surfaces of the protection module, the control module and the communication acquisition driving module.

Example two

Fig. 11 is a schematic structural diagram of a distribution box equipped with a compound switch according to a second embodiment of the present invention, which includes a box body 19 and a box door 2, where the box body is provided with an incoming line and an outgoing line, the incoming line and the outgoing line are generally located at the top or the bottom or at the left and right sides of the box body, and may be set differently according to user requirements, and the box body 19 and the box door 2 are connected by a hinge 23, so that the box door 2 rotates within a certain angle range; the box door is provided with a display screen 3, and the display screen 3 is utilized to display power supply information and realize the setting of human-computer interaction parameters; the box body 19 is also provided with a fuse 7, a DC power supply 8, an incoming line breaker 10, an incoming line copper bar 13, an incoming line branching terminal 15, a PE branching terminal 16, a composite switch 17 and a multi-loop control terminal 20; the display screen 3 is electrically connected with the DC power supply 8, and is connected with the multi-loop control terminal 20 and the incoming line breaker 10 through communication cables so as to read and control the multi-loop control terminal 20 and the incoming line breaker 10; the composite switch 17 has 36 paths (the embodiment can be expanded to 36 paths at most due to the volume limitation of the box body, if the external expansion box can be expanded to 72 paths at most) and is connected on the multi-loop control terminal 20 through plugging, the incoming line end of the composite switch 17 is connected with the outgoing line end of the incoming line branching terminal 15, the outgoing line end of the composite switch 17 is connected with a load, the load can be connected with 36 paths at most, and the multi-loop control terminal 20 can be provided with 3 groups (12 paths in each group) as required; the fuse 7 is connected to a circuit between the incoming line breaker 10 and the multi-loop control terminal 20, and provides protection for the voltage collected by the multi-loop control terminal 20; any phase voltage of the outgoing line of the incoming line breaker 10 is converted into DC direct current through a DC power supply 8 and output, and necessary secondary direct current power supplies are respectively provided for the multi-loop control terminal 20, the weak electric control module 4 and the display screen 3; the outlet end of the incoming line breaker 10 is connected with an incoming line branching terminal 15 through an incoming line copper bar 13 and is connected with a composite switch 17 after branching; the PE branch terminal 16 is connected with the PE ground of the box body 19, so that good grounding of the box body 19 is ensured.

The embodiment of the invention at least comprises a current transformer 12 and a weak current control module 4, wherein the current transformer 12 is connected with the incoming line breaker 10 and the incoming line copper bar 13 and is connected with the weak current control module 4, the current transformer 12 can also be installed at the input end of the incoming line breaker 10 and is used for detecting the current signal of the main line and transmitting the signal to the weak current control module 4, relevant current information is displayed on the display screen 3 through analysis and calculation, the weak current control module 4 is in communication connection with the display screen 3, the multi-loop control terminal 20 and the incoming line breaker 10 and is electrically connected with the DC power supply 8, and the information acquisition of each module unit is mainly realized.

The embodiment of the invention at least comprises a surge protector 14, wherein incoming lines A, B, C, N of the surge protector 14 are taken from an incoming line copper bar 13 and an N distribution terminal 21, and outgoing lines PE of the surge protector 14 are connected to a PE distribution terminal 16 and used for lightning protection of the distribution box.

The embodiment of the invention at least comprises a zero sequence transformer 6 and a multifunctional fireproof detector 9, wherein the zero sequence transformer 6 is sleeved on a line between an incoming line end and an incoming line breaker 10 and is connected with the weak current control module 4; the multifunctional fireproof detector 9 is connected with the weak current control module 4 and the display screen 3 through communication.

The zero sequence transformer 6 is sleeved on a line between the incoming line and the incoming line breaker 10 and is electrically connected with the weak current control module 4, and is used for outputting zero sequence current on the secondary side of the zero sequence transformer 6 when detecting abnormality occurring in a circuit, so that the weak current control module 4 of the connected zero sequence transformer 6 outputs an alarm signal; the multifunctional fireproof detector 9 supplies power from any one of three-phase voltages and is in communication connection with the weak electric control module 4 and the display screen 3.

Optionally, the multifunctional fire detector 9 may be replaced by at least one of a fault arc detector, a fault arc protector, and a temperature sensor.

The embodiment of the invention at least comprises a self-contained power supply 5, wherein the self-contained power supply 5 is respectively connected with the weak current control module 4, the display screen 3 and the multi-loop control terminal 20, and provides a standby working power supply for the weak current control module 4, the display screen 3 and the multi-loop control terminal 20 when power failure occurs to the outside, so that the main modules of the distribution box can work normally, and the power failure loss is reduced and avoided.

The embodiment of the invention at least further comprises a partition plate 11, wherein the partition plate 11 is used for being installed on the box body 19 through the supporting frame 18, unit modules are convenient to install, and a gap between the partition plate 11 and the rear wall of the box body 19 can be used for arranging and routing.

The embodiment of the invention also comprises at least a support frame 18, said support frame 18 being used to mechanically connect the rear wall of the cabinet to the partition 11 and to fix the partition 11, the partition 11 being used to mount the relative module.

The distribution box provided by at least one embodiment of the invention further comprises a door lock 1, wherein the door lock 1 is used for protecting the box body and the box door and preventing personnel from opening the box door randomly to cause abnormity or safety accidents.

The block terminal passes through compound switch and multi-loop control terminal's modularization matching design, make block terminal simple structure small and many shunts, improve the controllability and the scalability of block terminal, block terminal integrated level and intelligent degree are high, and this block terminal need not use complicated connection to walk the line when the equipment, the problem that the strong and weak electricity wiring is complicated and the circuit is in disorder among the prior art has been solved, it is all convenient more quick with the dismantlement to make block terminal installation, show the assembly and the maintenance efficiency that promote whole block terminal product, effectively improve production efficiency, and satisfy the increasingly high distribution demand of user.

EXAMPLE III

Fig. 12 is a schematic structural diagram of a distribution box according to a third embodiment of the present invention, where the same parts as those in the second embodiment are denoted by the same reference numerals, and only differences are described below, this example reduces the self-contained power supply 5, synchronously reduces the connection with the self-contained power supply 5, and the distribution box has no corresponding power-off protection function.

Example four

Fig. 13 shows a schematic structural diagram of the distribution box according to the fourth embodiment of the present invention, and the same parts as those in the second embodiment are denoted by the same reference numerals, and only differences will be described below, in this example, compared with the second embodiment, the surge protector 14 is omitted, the connection with the surge protector 14 is reduced synchronously, and the distribution box has no corresponding lightning protection function.

EXAMPLE five

Fig. 14 shows a schematic structural diagram of the distribution box according to the fifth embodiment of the present invention, and the same parts as those in the second embodiment are denoted by the same reference numerals, and only differences will be described below, in this example, compared with the third embodiment, the multifunctional fire-protection detector 9 is omitted, the connection with the multifunctional fire-protection detector 9 is reduced, and the distribution box has no corresponding fire-protection function.

EXAMPLE six

Fig. 15 shows a schematic structural diagram of the distribution box according to a sixth embodiment of the present invention, where the same parts as those in the second embodiment use the same reference numerals, and only the differences are described below, in this embodiment, compared with the first embodiment, the multifunctional fire-protection detector 9 and the zero-sequence transformer 6 are omitted, the connections between the multifunctional fire-protection detector 9 and the zero-sequence transformer 6 are reduced synchronously, and the distribution box has no corresponding fire-protection and zero-sequence current abnormality monitoring functions.

EXAMPLE seven

Fig. 16 shows a schematic structural diagram of the distribution box according to a seventh embodiment of the present invention, where the same parts as those in the second embodiment are denoted by the same reference numerals, and only differences are described below, in this embodiment, compared with the first embodiment, the weak current control module 4 and the current transformer 12 are reduced, the connection between the weak current control module 4 and the current transformer 12 is synchronously reduced, and the distribution box does not have the function of monitoring abnormal fire prevention and zero sequence current.

Example eight

Fig. 17 shows a schematic structural diagram of a distribution box according to an eighth embodiment of the present invention, where the same parts as those in the second embodiment use the same reference numerals, and only the differences are described below, where the distribution box according to this embodiment is provided with a fuse 7, a DC power supply 8, an incoming line breaker 10, an incoming line copper bar 13, an incoming line distribution terminal 15, a PE distribution terminal 16, a compound switch 17, and a multi-loop control terminal 20, where the positions of the above module units in the box body are different from those in fig. 3, and the connection relationship is the same as that in fig. 3; the composite switch 17 and the multi-loop control terminal 20 are distributed on the left side and the right side of the lower half part of the box body, and can also be distributed on a single side according to the number, and the specific position can be adjusted according to the requirement.

Optionally, the distribution box may also be equipped with a multifunctional fire detector 9 or a self-contained power supply 15 to meet different requirements of users.

The distribution box provided with the compound switch provided by the second to the eighth embodiments of the invention can freely add and freely combine the self-contained power supply 5, the surge protector 14, the multifunctional fire detector 9, the zero sequence transformer 6, the multifunctional fire detector 9, the current transformer 12 and the weak current control module 4 on the basis of the second embodiment, so that different user requirements are met.

The composite switch and the distribution box with the same provided by the eight embodiments of the invention have the beneficial effects that: the composite switch adopts a modularized split type design and comprises a circuit breaking module, a contact module and a control module, so that the problems of strong and weak current mixing areas, weak anti-interference performance, poor protection precision and power distribution potential safety hazards in the prior art are effectively solved, the production, debugging and maintenance are more convenient, and the interchangeability, maintainability and production efficiency are further improved; the modular design of each part structure is convenient for the production and maintenance of the distribution box, the composite switch is matched with the multi-loop control terminal, the size of the distribution box is greatly reduced, the types and the size of modules are reduced, the expansibility is improved, the interchangeability and the maintainability are improved, the installation and the connection are more rapid and accurate, and no extra complex external connecting circuit is needed, only corresponding modules need to be directly assembled and connected on the distribution box according to requirements, the controllability and the expandability of the distribution box are improved, the distribution box is simple in structure, small in size and multiple in branching circuits, the integration degree and the intelligence degree are high, different distribution requirements are met, the problem that strong and weak electric connection in the prior art is complex and messy is solved, the installation and the disassembly are faster, and the assembly and maintenance efficiency of the.

The following points need to be explained:

(1) in the embodiments of the present invention and the drawings, the same reference numerals refer to the same meanings unless otherwise defined.

(2) The drawings of the embodiments of the invention only relate to the structures related to the embodiments of the invention, and other structures can refer to common designs.

(3) In the drawings, which are used to describe embodiments of the invention for purposes of clarity, certain features may be exaggerated or minimized in size, i.e., the drawings are not drawn to scale.

(4) Without conflict, embodiments of the present invention and features of the embodiments may be combined with each other to arrive at new embodiments.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A compound switch is characterized in that the compound switch adopts a modularized split type design and partitions strong and weak current of the compound switch, and comprises a protection module (1751), a control module (1750) and a communication acquisition driving module (1752); the protection module (1751) and the control module (1750) are in mechanical drive connection; the communication acquisition driving module (1752) is in mechanical driving connection and/or electric connection with the protection module (1751), and the communication acquisition driving module (1752) is in electric connection with the control module (1750); the protection module (1751) is connected with a load power supply, the control module (1750) is connected with a load, and the communication acquisition driving module (1752) is connected with external communication acquisition equipment;

the protection module (1751) mainly comprises a switching device, a mechanical driving device, an electromagnetic tripping device and an arc extinguishing device; the control module (1750) mainly comprises an electromagnetic driving device; the communication acquisition driving module (1752) mainly comprises a control circuit board (1714), a current sensing device and a mechanical driving device, and state information of the switching device, the electromagnetic driving device, the current sensing device and the mechanical driving device is acquired, controlled and driven through the control circuit board (1714).

2. The compound switch of claim 1, wherein the protection module (1751) is provided with a handle (1702), a push rod (1729) and a microswitch push rod (1732), and one end of the push rod (1729) is exposed out of the lower end of the protection module (1751); the control module (1750) is provided with a microswitch (1723) and a second connecting piece (1721); the microswitch (1723) is in mechanical drive connection with the handle (1702) through the microswitch push rod (1732) and transmits a switching-on state signal of the handle to the communication acquisition driving module (1752); the communication acquisition driving module (1752) comprises a first plug terminal (1715), a second plug terminal (1717), a fifth connecting piece (1736) and a shifting fork (1731), the shifting fork (1731) is connected through the mechanical driving of the ejector rod (1729) and drives the ejector rod (1729) to move up and down and is connected with the handle (1702) through the driving of a transmission device, the fifth connecting piece (1736) is electrically connected with the fourth connecting piece (1735) at a first connecting point (175207) through a first connecting fastener (1733), and the fifth connecting piece (1736) is electrically connected with the second connecting piece (1721) at a second connecting point (175206) through a second connecting fastener (1733); the communication acquisition driving module (1752) is electrically connected with the control module (1750) through the second plug terminal (1717) to acquire and control electric signals.

3. A compound switch according to claim 1 or 2, characterized in that said protection module (1751) further comprises an electromagnetic trip (1704), an auxiliary block (1730), a hook spring (1728), a movable contact base (1713), a jumper (1703), a buckle (1712), a connecting shaft (1727); the switch movable contact (1705) is electrically connected with the bimetallic strip (1709); the switch static contact (1706) is electrically connected with the electromagnetic release (1704) and the arc extinguishing grid (1707) respectively; the ejector rod (1729) is in driving connection with the auxiliary shifting block (1730), the auxiliary shifting block (1730) is in driving connection with the jumper bar (1703), the jumper bar (1703) is in driving connection with the movable contact base (1713), and the jumper bar (1703) is in driving connection with the bimetallic strip (1709) through the hook spring (1728); the movable contact seat (1713) is in driving connection with the switch movable contact (1705), and the movable contact seat (1713) is in driving connection with the jumper bar (1703); the jumper (1703) is in driving connection with the handle (1702) through the connecting shaft (1727).

4. A switch of the multiple type according to claim 1 or 2, wherein the control module (1750) further comprises a second driving mechanism (1716), the second driving mechanism (1716) is drivingly connected to the movable contact (1719) and electrically connected to the second socket terminal (1717), and the second socket terminal (1717) is electrically connected to the microswitch (1723).

5. A compound switch according to claim 1 or 2, characterized in that the communication acquisition drive module (1752) further comprises a compound switch current transformer (1710), a first drive mechanism (1711), a control circuit board (1714); the composite switch current transformer (1710) is sleeved on at least one of the first connecting piece (1720), the second connecting piece (1721), the third connecting piece (1722), the fourth connecting piece (1735) and the fifth connecting piece (1736); the composite switch current transformer (1710) is electrically connected with the control circuit board (1714); the control circuit board (1714) is electrically connected with the first driving mechanism (1711) and/or the second driving mechanism (1716), and the control circuit board (1714) is electrically connected with the microswitch (1723) through a second plug-in terminal (1717); the shifting fork (1731) corresponds to the first driving mechanism (1711) and/or the top rod (1729).

6. A distribution box, comprising the compound switch of any one of claims 1-5, further comprising a box body (19) and a box door (2), wherein the box body (19) is provided with at least one wire inlet and at least one wire outlet, the box body (19) and the box door (2) are rotatably connected through a hinge (23), and the distribution box is characterized in that the box door (2) is provided with a display screen (3), and the box body (19) is internally provided with a fuse (7), a DC power supply (8), a wire inlet breaker (10), a wire inlet copper bar (13), a wire inlet distributing terminal (15), a PE distributing terminal (16), a compound switch (17) and a multi-loop control terminal (20); the display screen (3) is connected with the DC power supply (8) and is connected with the multi-loop control terminal (20) through a communication cable; at least one composite switch (17) is plugged on the multi-loop control terminal (20) through a first plugging terminal (1715), and a second wire pressing frame (1726) is electrically connected with a wire outlet end of the wire inlet branching terminal (15); the fuse (7) is connected to a circuit between the incoming line breaker (10) and the multi-loop control terminal (20); any phase voltage outgoing line of the incoming line breaker (10) is converted by the DC power supply (8) and outputs direct current voltage, and the output end of the DC power supply (8) is electrically connected with the multi-loop control terminal (20) and the display screen (3) respectively; the incoming line breaker (10) is connected with the input end of the incoming line branching terminal (15) through the incoming line copper bar (13), and is electrically connected with the composite switch (17) after being branched by the incoming line branching terminal (15); the PE branch terminal (16) is electrically connected to the PE ground of the case (19).

7. The distribution box according to claim 6, further comprising a current transformer (12) and a weak current control module (4), wherein said current transformer (12) is connected to said incoming line breaker (10) and said incoming line copper bar (13) and electrically connected to said weak current control module (4); and the weak electric control module (4) is in communication connection with the display screen (3) and the multi-loop control terminal (20), and is electrically connected with the DC power supply (8) and the incoming line breaker (10).

8. The distribution box of claim 6 or 7, further comprising a surge protector (14), wherein an incoming line of the surge protector (14) is taken from an incoming line copper bar (13), an N line of the surge protector (14) is taken from the N branching terminal (21), and an outgoing line PE of the surge protector (14) is electrically connected to the PE branching terminal (16).

9. The distribution box according to claim 8, further comprising a zero sequence transformer (6) and a multifunctional fire detector (9), wherein the zero sequence transformer (6) is sleeved on the N lines between the incoming line terminal and the incoming line breaker (10) and electrically connected with the weak electric control module (4); the multifunctional fireproof detector (9) is electrically connected with the weak electric control module (4) and the display screen (3) through communication.

10. The electrical box according to claim 9, further comprising a self-contained power source (5), said self-contained power source (5) being electrically connected to said weak electrical control module (4), said display screen (3), and said multi-loop control terminal (20).

11. The electric box according to any one of claims 6, 7 or 9, characterized in that said box body (19) is provided with a partition (11) and a C-shaped support frame (18), said partition (11) being used for mounting a corresponding unit module; the C-shaped support frame (18) is used for mechanically connecting the box body (19) and the partition plate (11) and fixing the partition plate (11).

12. The electric box according to claim 8, characterized in that said box body (19) is provided with a partition (11) and a C-shaped support frame (18), said partition (11) being used for mounting the corresponding unit module; the C-shaped support frame (18) is used for mechanically connecting the box body (19) and the partition plate (11) and fixing the partition plate (11).