CN221352586U - Contact assembly, pole unit, change-over switch and distribution equipment - Google Patents

Abstract

The application provides a contact assembly, a pole unit, a change-over switch and power distribution equipment, and relates to the technical field of piezoelectric devices. The contact assembly comprises a fixed contact group and a moving contact group electrically connected with the fixed contact group, wherein one side of the fixed contact group and/or the moving contact group is provided with at least one magnetic conduction piece which is used for collecting and absorbing a magnetic field when the moving contact group and the fixed contact group are in a connected and/or disconnected state. The contact assembly obtained through the design can improve short-time withstand current index of the contact assembly, meanwhile, the contact assembly is arranged at the joint of the fixed contact group and the moving contact group, a good magnetic attraction effect can be generated, even if the current is too large when the moving contact group rotates relative to the fixed contact group, the moving contact group can be subjected to enough magnetic attraction to keep the moving contact group from being influenced by a magnetic field generated by the fixed contact group to move reversely, and the reliability and the stability of the connection of the moving contact group and the fixed contact group are ensured.

Description

Contact assembly, pole unit, change-over switch and distribution equipment

Technical Field

The application relates to the technical field of piezoelectric devices, in particular to a contact assembly, a pole unit, a change-over switch and power distribution equipment.

Background

In the electrical technical field, automatic transfer switches are used for providing uninterrupted power supply for loads and can be switched between different power supplies to ensure the continuity of power supply.

In the course of conception and implementation of the present application, the inventors found that at least the following problems exist: in some reality, in order to improve short-time withstand current indexes of the contact assembly, a magnetic conduction block is attached to one side, away from the moving contact, of each static contact structure; however, the magnetic conduction distance of the magnetic conduction iron is short, and under the condition of large current, the static contact can generate a magnetic field to cause the moving contact to reversely rotate, so that the moving contact and the static contact are disconnected.

The foregoing description is provided for general background information and does not necessarily constitute prior art.

Disclosure of utility model

The application aims to solve the technical problems that a magnetic conduction block is attached to one side of each static contact structure in reality, and the static contact can generate a magnetic field to cause the moving contact to reversely rotate under the condition of large current due to the limitation of the magnetic conduction range of a magnetic conduction iron, so that the moving contact and the static contact are disconnected.

To solve the above technical problems, embodiments of the present application are implemented as follows:

In one aspect of the embodiment of the application, a contact assembly is provided, which comprises a fixed contact group and a moving contact group electrically connected with the fixed contact group, wherein one side of the fixed contact group and/or the moving contact group is provided with at least one magnetic conduction piece, and the magnetic conduction piece comprises at least one of the following functions:

the magnetic conduction piece is used for absorbing and/or collecting the magnetic field when the movable contact group and the fixed contact group are in a connected and/or disconnected state;

The magnetic conduction piece is used for biasing the magnetic field arc when the rotating contact group and the fixed contact group are in a connection and/or disconnection state.

Optionally, the fixed contact group includes a first fixed contact group and a second fixed contact group, and/or the moving contact group includes a first moving contact group and a second moving contact group, and the position of the magnetic conductive member further includes at least one of the following:

the magnetic conduction piece is positioned at one side of the joint of the first fixed contact group and the first movable contact group;

the magnetic conduction piece is positioned at one side of the joint of the second fixed contact group and the second movable contact group;

the magnetic conduction piece is positioned between the first fixed contact group and the second movable contact group;

the magnetic conduction piece is positioned between the second fixed contact group and the first movable contact group.

Optionally, the magnetic conductive piece is located at one side of the fixed contact group, and if the moving contact group and the fixed contact group are closed, the moving contact group and the fixed contact group continuously move along the closing direction to contact or sweep the magnetic conductive piece.

Optionally, the function of the magnetically permeable member includes at least one of:

When the first movable contact group is combined with the first fixed contact and is separated from the first fixed contact, the magnetic conduction piece is used for absorbing a magnetic field generated when the first movable contact group is combined with the first fixed contact and is separated from the first fixed contact; and/or deflecting the electric arc when the first movable contact group is combined with the first fixed contact and is separated.

When the second movable contact group is combined with the second fixed contact and is separated from the second fixed contact, the magnetic conduction piece is used for absorbing a magnetic field generated when the second movable contact group is combined with the second fixed contact and is separated from the second fixed contact; and/or deflecting the electric arc when the second fixed contact group is combined with the second movable contact and is separated.

When the first fixed contact group and the second movable contact are combined and separated, the magnetic conduction piece is used for absorbing a magnetic field generated when the first fixed contact group and the second movable contact are combined and separated; and/or, deflecting the electric arc when the first fixed contact group is combined with the second movable contact group to break the gate.

When the second fixed contact group is combined with the first moving contact and is separated from the first moving contact, the magnetic conduction piece is used for absorbing a magnetic field generated when the second fixed contact group is combined with the first moving contact and is separated from the first moving contact, and/or deflecting an electric arc generated when the second fixed contact group is combined with the first moving contact and is separated from the first moving contact.

Optionally, the magnetic conductive member is made of at least one of the following materials: carbonyl iron; 10# steel; pure iron; DT4 pure iron; low carbon steel; iron-silicon alloy; iron-aluminum alloy; an Fe-Si-Al alloy; nickel-iron alloy; permalloy; iron-cobalt alloy; a soft magnetic ferrite; amorphous soft magnetic alloys; ultra-microcrystalline soft magnetic alloys.

Optionally, the distance between the magnetic conductive piece and the connection parts of the fixed contact group and the moving contact group comprises at least one of the following:

the distance between the connection parts of the magnetic conduction piece and the first fixed contact group and the connection parts of the first movable contact group are 1mm to 20mm;

or the distance between the connection parts of the magnetic conduction piece and the second fixed contact group and the second movable contact group is 1mm to 20mm;

or the distance between the magnetic conduction piece and the connection part of the first fixed contact group and the second movable contact group is 1mm to 20mm;

Or the distance between the magnetic conduction piece and the connection part of the second fixed contact and the first movable contact group is 1mm to 20mm.

Optionally, the magnetic permeability of the magnetic permeable member is greater than 0.5T henry/meter.

In another aspect of the embodiments of the present application, a pole unit is provided, comprising the contact assembly described above.

Optionally, the pole unit further comprises a shell, a groove is arranged on the shell, the groove is correspondingly arranged between the first fixed contact group and the second fixed contact group of the contact assembly, and the groove is positioned at one side of a contact point of a movable contact group and a fixed contact group of the contact assembly; the magnetic conduction piece of the contact assembly is clamped in the groove.

Optionally, the interval between the groove and the contact point of the movable contact group and the fixed contact group is 1mm to 20mm.

Optionally, the pole unit further comprises a load end, and the movable contact group of the contact assembly is fixedly connected with a braided cable, and the braided cable is used for being flexibly connected with the load end of the pole unit.

Optionally, the pole unit further comprises an arc extinguishing chamber, and the arc extinguishing chamber is arranged at the connection part of the moving contact group of the contact assembly and the first fixed contact group and/or the second fixed contact group.

In another aspect of the embodiments of the present application, a transfer switch is provided, including the pole unit described above.

The embodiment of the application also discloses a power distribution device which comprises the change-over switch.

The beneficial effects of the embodiment of the application include at least one of the following: the contact assembly provided by the application comprises a fixed contact group and a moving contact group electrically connected with the fixed contact group, wherein one side of the fixed contact group and/or the moving contact group is provided with at least one magnetic conduction piece, and the magnetic conduction piece comprises at least one of the following functions: the magnetic conduction piece is used for absorbing or converging a magnetic field when the movable contact group and the fixed contact group are in a connected and/or disconnected state and/or deflecting an electric arc when the movable contact group and the fixed contact group are in a connected and/or disconnected state; through the setting of magnetic conduction spare, can improve the short-time tolerance current index of contact subassembly when being convenient for production installation, it sets up in one side of static contact group and/or moving contact group simultaneously, can produce good magnetism effect to moving contact group and/or static contact group when the electricity is connected, even the moving contact group rotates with the too big electric current when contacting with the static contact group, also can produce sufficient magnetism suction to the moving contact group and keep it not influenced by the magnetic field that the static contact produced and reverse motion, guaranteed the reliability and the stability that moving contact group was connected with the static contact group.

The pole unit comprises the contact assembly, so that the short-time tolerance current index of the contact assembly can be improved, the current is not easy to break, and the safety and reliability are improved.

The change-over switch comprises the pole unit, so that the overall short-time tolerance current index can be improved, the current is not easy to break when the power supply is switched, and the safety and the reliability are improved.

The power distribution equipment is provided with the change-over switch, the pole unit is applied to the power distribution equipment, the power distribution equipment can be applied to full-house intelligence, and the power distribution equipment can be applied to intelligent home and the internet of things industry so as to realize full-house intelligent management.

The power distribution equipment is provided with the contact mechanism and/or the change-over switch, and the contact mechanism and/or the change-over switch are applied to the power distribution equipment, so that the power distribution equipment can be applied to various use scenes, intelligent home, the Internet of things industry and more intelligent scenes, and intelligent management is realized. Alternatively, the application may be used in the following usage scenarios: fire electricity consumption: the fire control system comprises a fire control room, a fire pump, a smoke prevention and exhaust facility, a fire elevator, a drainage pump, fire emergency lighting and the like; roadway lighting, duty lighting, guard lighting and obstacle marker lights; rail transit; a security system power supply; an electronic information machine room power supply; passenger elevator power; a sewage pump; variable-frequency speed-regulating constant-pressure water supply living pump (or else, a secondary load); the system comprises a main office, a conference room, a general office, an archive room.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a contact assembly according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a pole unit according to an embodiment of the present application;

fig. 3 is a second schematic structural diagram of a pole unit according to an embodiment of the present application.

Icon: a 100-contact assembly; 110-a first stationary contact group; 120-a second static contact group; 130-magnetic conduction piece; 140-braiding a cable; 150-moving contact groups; 151-a first movable contact group; 152-a second set of moving contacts; 200-pole units; 210-a housing; 211-grooves; 220-load side; 230-arc extinguishing chamber.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the present application, it should be understood that terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are merely used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection or signal connection; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application will be understood by those skilled in the art according to the specific circumstances.

In some implementations, in order to improve the short-time current tolerance index of the contact assembly 100, a magnetic conductive block is attached to one side of each static contact structure, so that a certain interval exists between the static contacts, and current is easily disconnected when the pole unit switches power.

Driven by the intelligent and automatic high-new technology, the intelligent home industry enters a rapid development period. The smart home industry meets new challenges and opportunities in technological, marketing and industry revolution.

Divide intelligent house according to the function, can divide into eight modules with whole house intelligence: entertainment system, security protection system, control system, lighting system, kitchen and bathroom household electrical appliances system, network and communication system, health medical system, indoor environment system. And the eight modules are linked together, so that the whole house intelligence is finally realized.

In view of the above, in order to solve the above-mentioned problems, an aspect of the present application provides a contact assembly 100, which includes a fixed contact set and a moving contact set 150 electrically connected to the fixed contact set, wherein at least one magnetic conductive member 130 is disposed on one side of the fixed contact set and/or the moving contact set 150, and the magnetic conductive member 130 includes at least one of the following functions: the magnetic conductive member 130 is used for absorbing or collecting the magnetic field sum when the moving contact set 150 is in the connected and/or disconnected state with the fixed contact set, and deflecting the arc direction when the moving contact set 150 is in the connected and/or disconnected state with the fixed contact set.

Specifically, as shown in fig. 1, the contact structure includes a fixed contact group, and a movable contact group 150 that is rotatable relative to the fixed contact group and is connectable to the fixed contact group. At least one magnetic conduction piece 130 is arranged on one side of the fixed contact group and/or the movable contact group 150, and the magnetic conduction piece 130 is arranged at a position which can be swept by continuous movement after the movable contact group 150 is switched on; when the moving contact group 150 is connected or disconnected with the fixed contact group, the magnetic conductive member 130 can absorb the magnetic field and the deflection arc direction generated by the fixed contact group at the moment, so as to ensure that the movement direction of the moving contact group 150 is always consistent.

As shown in fig. 1, the fixed contact group includes a first fixed contact group 110 and a second fixed contact group 120 that are disposed at intervals, and accordingly, the moving contact group 150 may correspondingly dispose a first moving contact group 151 and a second moving contact group 152, and the first moving contact group 151 and the second moving contact group 152 may be connected to or disconnected from the first fixed contact group 110 and the second fixed contact group 120, respectively.

When the movable contact group 150 rotates to drive the first movable contact group 151 to rotate and connect with the first fixed contact group 110, the first power supply can be turned on; when the moving contact set 150 rotates to drive the second moving contact set 152 to rotate and contact the second fixed contact set 120, the second power supply can be turned on. The movable contact group 150 rotates between the first fixed contact group 110 and/or the second fixed contact group 120 to realize switching of power.

The position of the magnetic conductive member 130 may be set at one side of the connection between the first moving contact group 151 and the first fixed contact group 110, and the interval between the magnetic conductive member 130 and the connection between the first fixed contact group 110 and the first moving contact group 151 is 1mm to 20mm; when the first movable contact group 151 rotates to connect with the first fixed contact group 110, the first fixed contact group 110 may generate a magnetic field due to a larger current and drive the first movable contact group 151 to rotate reversely, which easily results in easy disconnection; the magnetic conductive member 130 can absorb the magnetic field, so as to ensure the reliability and stability of the connection between the first fixed contact set 110 and the first movable contact set 151;

The position of the magnetic conductive member 130 may also be set at one side of the connection position of the second fixed contact group 120 and the second moving contact group 152, and the interval between the magnetic conductive member 130 and the connection position of the second fixed contact group 120 and the second moving contact group 152 is 1mm to 20mm; when the second moving contact set 152 rotates to connect with the second fixed contact set 120, the second fixed contact set 120 may generate a magnetic field due to a larger current and drive the second moving contact set 152 to rotate reversely, which easily results in easy disconnection; the magnetic conductive member 130 can absorb the magnetic field, so as to ensure the reliability and stability of the connection between the second fixed contact set 120 and the second movable contact set 152;

In addition, the magnetic conductive member 130 may be further disposed between the first fixed contact group 110 and the second movable contact group 152, where the space between the magnetic conductive member 130 and the connection between the first fixed contact group 110 and the second movable contact group 152 is 1mm to 20mm; when the second moving contact set 152 rotates to connect with the first fixed contact set 110, the first fixed contact set 110 may generate a magnetic field due to a larger current and drive the second moving contact set 152 to rotate reversely, which easily results in easy disconnection; the magnetic conductive member 130 can absorb the magnetic field, so as to ensure the reliability and stability of the connection between the first fixed contact set 110 and the second movable contact set 152;

The magnetic conductive member 130 may also be disposed between the second fixed contact group 120 and the first moving contact group 151, where the magnetic conductive member 130 is 1mm to 20mm apart from the connection between the second fixed contact group 120 and the first moving contact group 151; when the first moving contact set 151 rotates to connect with the second fixed contact set 120, the second fixed contact set 120 may generate a magnetic field due to a larger current and drive the first moving contact set 151 to rotate reversely, which easily results in easy disconnection; the magnetic conductive member 130 can absorb the magnetic field, so as to ensure the reliability and stability of the connection between the second fixed contact set 120 and the first movable contact set 151.

The magnetic conductive member 130 can guide an electromagnetic field or magnetic flux such that the magnetic flux is more concentrated in the magnetic conductive member 130, thereby reducing the magnetic flux at the moving contact group 150, and thus reducing the electromagnetic force (lorentz force) that the moving contact group 150 receives to tend to separate from the stationary contact. Therefore, the magnetic conductive member 130 can further improve the short-time withstand current index of the contact assembly 100.

In the embodiment of the present application, the magnetic conductive member 130 is disposed on one side of the fixed contact group and/or the moving contact group 150, so as to absorb a magnetic field and deflect an arc direction when the fixed contact group is connected to and/or disconnected from the moving contact group 150; in some reality, one side of each fixed contact structure, which is away from the moving contact, is stuck with a guide magnet; however, the magnetic conduction range of the magnetic conduction iron is limited, so that the static contact group can generate a magnetic field to cause the moving contact group 150 to reversely rotate under the condition of larger current, and the moving contact group 150 is disconnected from the static contact group. By adjusting the position of the magnetic conductive member 130, the short-time current tolerance index of the contact assembly 100 is improved, and when the moving contact group 150 rotates from the first fixed contact group 110 to the second fixed contact group 120, even if the current is too large, the fixed contact group generates a magnetic field for reversely rotating the moving contact group 150, the position of the moving contact group 150 can be fixed by the magnetic conductive member 130, the separation of the moving contact group 150 and the fixed contact group is avoided, the current is disconnected, and the reliability of the contact assembly 100 is improved.

The application provides a magnetic conductive member 130, which comprises a fixed contact group and a movable contact group 150 electrically connected with the fixed contact group, wherein one side of the fixed contact group and/or the movable contact group 150 is provided with at least one magnetic conductive member 130, and the magnetic conductive member 130 comprises at least one of the following functions: the magnetic conductive member 130 is used for collecting and absorbing the magnetic field when the movable contact group 150 and the fixed contact group are in a connected and/or disconnected state; the magnetic conductive member 130 is used for deflecting the arc direction when the moving contact set 150 is in a connected and/or disconnected state with the fixed contact set. Through the setting of magnetic conduction piece 130, can improve the short-time tolerance current index of contact assembly 100 when being convenient for production installation, it sets up in the junction of static contact group and moving contact group 150 simultaneously, can produce good magnetism effect to moving contact group 150/or static contact group when the electricity is connected, even moving contact group 150 rotates with the too big current when contacting with the static contact group, also can produce sufficient magnetism suction to moving contact group 150 and keep it not influenced by the magnetic field that the static contact group produced and reverse motion, guaranteed the reliability and the stability that moving contact group 150 is connected with the static contact group.

In one implementation of the present application, the functions of the magnetic conductive member 130 include at least one of:

When the first moving contact group 151 and the first fixed contact group 110 are combined and separated, the magnetic conductive member 130 is used for absorbing a magnetic field generated when the first moving contact group 151 and the first fixed contact group 110 are combined and separated; and/or deflecting the electric arc when the first movable contact group is combined with the first fixed contact and is separated.

When the second moving contact group 152 and the second fixed contact group 120 are combined and separated, the magnetic conductive member 130 is used for absorbing the magnetic field generated when the second moving contact group 152 and the second fixed contact group 120 are combined and separated; and/or deflecting the electric arc when the second fixed contact group is combined with the second movable contact and is separated.

When the first fixed contact group and the second movable contact are combined and separated, the magnetic conduction piece is used for absorbing a magnetic field generated when the first fixed contact group and the second movable contact are combined and separated; and/or, deflecting the electric arc when the first fixed contact group is combined with the second movable contact group to break the gate.

When the second fixed contact group is combined with the first moving contact and is separated from the first moving contact, the magnetic conduction piece is used for absorbing a magnetic field generated when the second fixed contact group is combined with the first moving contact and is separated from the first moving contact, and/or deflecting an electric arc generated when the second fixed contact group is combined with the first moving contact and is separated from the first moving contact.

Specifically, the magnetic conductive member 130 is disposed at a connection position between the fixed contact group and the movable contact group 150 along a movement path of the movable contact group 150; when the moving contact group 150 rotates clockwise or anticlockwise, the magnetic conduction effect of the magnetic conduction piece 130 can be received, the magnetic conduction piece 130 can absorb the magnetic field which is generated when the fixed contact group and the moving contact group 150 are switched on and off and enables the moving contact group 150 to move reversely, so that the timely overlarge current is ensured, the moving contact group 150 and the fixed contact can still be kept connected, meanwhile, the arc can be offset, and the switching-on and switching-off reliability of the contact assembly 100 is improved.

In a preferred embodiment of the present application, the magnetic conductive member 130 may be a rectangular block, or may be a square structure, and of course, in addition to this, the magnetic conductive member 130 may also be configured as a circle, a diamond, or the like, as long as the magnetic field and the offset arc direction that can absorb the magnetic field when the moving contact group 150 is in the connected and/or disconnected state with the fixed contact group, so that the connection or separation of the moving contact group 150 and the fixed contact group is reliable and stable, and the specific configuration structure of the magnetic conductive member 130 is not limited in any way; the size of the magnetic conductive member 130 is set based on the preset gap at one side of the fixed contact set and/or the movable contact set 150, so that the magnetic conductive member 130 does not occupy additional space; meanwhile, the magnetic conductive member 130 has a larger thickness, so that the thickness of the magnetic conductive member 130 is larger than the thicknesses of the first static contact group 110 and the second static contact group 120, and thus, the electromagnetic field or magnetic flux generated by the first static contact group 110 or the second static contact group 120 is guided more and is intensively distributed in the magnetic conductive member 130, which can further improve the short-time withstand current index of the contact assembly 100.

Further, the magnetic conductive member 130 is made of at least one of the following materials: carbonyl iron; 10# steel; pure iron; DT4 pure iron; low carbon steel; iron-silicon alloy; iron-aluminum alloy; an Fe-Si-Al alloy; nickel-iron alloy; permalloy; iron-cobalt alloy; a soft magnetic ferrite; amorphous soft magnetic alloys; ultra-microcrystalline soft magnetic alloys. Further, the magnetic permeability of the magnetic conductive member 130 is greater than 0.5T henry/m.

Specifically, the magnetic permeability of the magnetic conductive member 130 is greater than 0.5T henry/m; the magnetic conductive member 130 may be carbonyl iron; 10# steel; pure iron; DT4 pure iron; low carbon steel; iron-silicon alloy; iron-aluminum alloy; an Fe-Si-Al alloy; nickel-iron alloy; permalloy; iron-cobalt alloy; a soft magnetic ferrite; amorphous soft magnetic alloys; one or more of the ultracrystalline soft magnetic alloys, which have excellent magnetic permeability. In a preferred scheme of the application, the pure iron material is preferably DT4 iron, and DT4 pure iron is an iron material of high purity iron and has good magnetic property and mechanical property; meanwhile, the chemical components of the DT4 pure iron contain less impurity elements, so that the magnetic performance of the DT4 pure iron is more stable and reliable. In another preferred scheme of the application, the magnetic conduction member 130 can also be made of 10# steel, the 10# steel has lower carbon content and better magnetic conductivity, and the magnetic performance of the magnetic conduction member 130 can be ensured to be stable and reliable.

In another aspect of the present application, a pole unit 200 is provided, comprising the contact assembly 100 described above.

Specifically, in a preferred embodiment of the present application, as shown in fig. 2, the pole unit 200 includes a contact assembly 100, and the contact assembly 100 is disposed within a housing 210 of the pole unit 200; the movable contact group 150 of the contact assembly 100 is rotatably disposed in the housing 210, the first fixed contact group 110 and the second fixed contact group 120 of the contact assembly 100 are fixedly disposed in the housing 210, and the first fixed contact group 110 is disposed above the second fixed contact group 120; a gap exists between the first fixed contact group 110 and the second fixed contact group 120, and a magnetic conduction piece 130 of the contact assembly 100 is arranged at the gap; the magnetic conductive member 130 is disposed between the first fixed contact set 110 and the second fixed contact set 120 along the movement path of the moving contact set 150, so that the short-time current tolerance index of the contact assembly 100 can be improved, and even if the current is too large when the moving contact set 150 rotates to contact the first fixed contact set 110 and/or the second fixed contact set 120 to switch the power supply, enough magnetic attraction force can be generated on the moving contact set 150 to keep the moving contact set 150 from being influenced by the magnetic field generated by the fixed contact set to move reversely, thereby ensuring the connection reliability and stability of the pole unit 200. The specific structure and advantages of the contact assembly 100 are described in detail above, and are not repeated here.

In an implementation manner of the present application, the pole unit 200 further includes a housing 210, where a groove 211 is provided on the housing 210, and the groove 211 is correspondingly disposed between the first fixed contact group 110 and the second fixed contact group 120 of the contact assembly 100 and is located at one side of a contact point where the moving contact group 150 of the contact assembly 100 closes with the fixed contact group; the magnetic conductive member 130 of the contact assembly 100 is clamped in the groove 211.

Specifically, as shown in fig. 3, the pole unit 200 further includes a housing 210, the first static contact group 110 and the second static contact group 120 are fixed on the housing 210, and a certain gap exists between the first static contact group 110 and the second static contact group 120; the position of the shell 210 corresponding to the gap is provided with a groove 211, the distance between the groove and the contact point of the fixed contact group and the moving contact group 150 is kept between 1 mm and 20mm, and the position of the groove is contacted or swept if the moving contact group 150 continuously moves after being switched on. The magnetic conductive member 130 of the contact assembly 100 is clamped in the groove 211 to be fixedly connected with the housing 210. Such a connection facilitates the installation of the magnetic conductive member 130, and improves the assembly efficiency and connection stability of the pole unit 200. It should be noted that, the groove 211 may be disposed between the first fixed contact set 110 and the second fixed contact set 120, and may also be disposed at a side of a connection portion between the first fixed contact set 110 and/or the second fixed contact set 120 and the moving contact set 150, and the specific location of the groove 211 is not limited in the present application.

In one embodiment of the present application, the pole unit 200 further includes a load end 220, and the movable contact group 150 of the contact assembly 100 is fixedly connected to a braided cable 140, and the braided cable is used for being flexibly connected to the load end 220 of the pole unit 200.

Specifically, the pole unit 200 further includes a load end 220, as shown in fig. 2, where the load end 220 is disposed at a relative position between the first fixed contact set 110 and the second fixed contact set 120; a braided cable 140 is correspondingly arranged on the moving contact group 150 of the contact assembly 100, and one end of the braided cable is in soft connection with the load end 220 so as to realize connection between the pole unit 200 and a load.

In an implementation manner of the present application, an arc extinguishing chamber 230 is further disposed at a connection portion between the moving contact group 150 of the contact assembly 100 and the first fixed contact group 110 and/or the second fixed contact group 120.

Specifically, as shown in fig. 2 and 3, the pole unit 200 further includes an arc extinguishing chamber 230, where the arc extinguishing chamber 230 is disposed at a contact position of the first static contact group 110 and/or the second static contact group 120 and the moving contact group 150, when the first static contact group 110 and/or the second static contact group 120 contact the moving contact group 150, the first static contact group 110 or the second static contact group 120 can transmit the generated arc to the arc extinguishing chamber 230 through the striking contact point for arc extinguishing, thereby ensuring that the contact assembly 100 is not easily damaged by the arc ablation, and improving the reliability and safety of the pole unit 200.

In another aspect of the present application, a transfer switch is provided, which includes the pole unit 200 described above. Specifically, the fixed contact group and the movable contact group 150 in the transfer switch can realize switching of the power supply by separation or connection. When the movable contact group 150 rotates towards the fixed contact group to switch the power supply, the fixed contact group easily generates a magnetic field at the moment due to overlarge current so as to drive the movable contact group 150 to reversely rotate; the magnetic conductive member 130 can absorb the magnetic field generated by the fixed contact group, so as to ensure that the movable contact group 150 is stably connected with the fixed contact group, ensure that the current is not easy to break when the power supply is switched, and improve the safety and reliability of the use process of the switching power supply.

The embodiment of the application also provides a power distribution device, wherein the power distribution device is provided with the change-over switch, and the power distribution device can be configured as at least one of the following: distribution box, cable, switch board, motor, switch socket, lamps and lanterns, air conditioner, electric water heater, ammeter, camera, phone, computer etc.. The power distribution equipment can use the related structure of the circuit breaker to realize intelligent management, but is not limited to the power distribution equipment with the intelligent management, and can also be used in the non-intelligent power distribution equipment in the traditional industry.

The embodiment of the application also provides distribution equipment, the circuit breaker is applied to the distribution equipment, the distribution equipment can be applied to full-house intelligence, and the distribution equipment is applied to the intelligent home and the Internet of things industry so as to realize full-house intelligent management.

Alternatively, the embodiment of the application can be used for: fire electricity consumption: the fire control system comprises a fire control room, a fire pump, a smoke prevention and exhaust facility, a fire elevator, a drainage pump, fire emergency lighting and the like; roadway lighting, duty lighting, guard lighting and obstacle marker lights; rail transit; a security system power supply; an electronic information machine room power supply; passenger elevator power; a sewage pump; variable-frequency speed-regulating constant-pressure water supply living pump (or else, a secondary load); the system comprises a main office, a conference room, a general office, an archive room.

It can be understood that the above scenario is merely an example, and does not constitute a limitation on the application scenario of the technical solution provided by the embodiment of the present application, and the technical solution of the present application may also be applied to other scenarios. For example, as one of ordinary skill in the art can know, with the evolution of the system architecture and the appearance of new service scenarios, the technical solution provided by the embodiment of the present application is also applicable to similar technical problems.

The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The units in the device of the embodiment of the application can be combined, divided and deleted according to actual needs.

In the present application, the same or similar term concept, technical solution and/or application scenario description will be generally described in detail only when first appearing and then repeatedly appearing, and for brevity, the description will not be repeated generally, and in understanding the present application technical solution and the like, reference may be made to the previous related detailed description thereof for the same or similar term concept, technical solution and/or application scenario description and the like which are not described in detail later.

In the present application, the descriptions of the embodiments are emphasized, and the details or descriptions of the other embodiments may be referred to.

The technical features of the technical scheme of the application can be arbitrarily combined, and all possible combinations of the technical features in the above embodiment are not described for the sake of brevity, however, as long as there is no contradiction between the combinations of the technical features, the application shall be considered as the scope of the description of the application.

Claims (12)

1. The utility model provides a contact assembly, includes the static contact group and with static contact group electric connection's moving contact group (150), its characterized in that, the static contact group and/or at least one side of moving contact group (150) is furnished with at least one magnetic conduction spare (130), magnetic conduction spare (130) include following at least one kind of function:

The magnetic conduction piece (130) is used for collecting and/or absorbing magnetic fields when the movable contact group (150) and the fixed contact group are in a connected and/or disconnected state;

The magnetic conduction piece (130) is used for deflecting the direction of an electric arc when the movable contact group (150) and the fixed contact group are in a connection and/or disconnection state.

2. The contact assembly of claim 1, wherein the magnetic conductive member (130) is located at one side of the fixed contact group, and if the moving contact group (150) is closed with the fixed contact group, the moving contact group continuously moves along a closing direction to contact or sweep the magnetic conductive member (130).

3. The contact assembly of claim 1, wherein the stationary contact set comprises a first stationary contact set (110) and a second stationary contact set (120), and/or the moving contact set (150) comprises a first moving contact set (151) and a second moving contact set (152), the position of the magnetically permeable member (130) further comprising at least one of:

The magnetic conduction piece (130) is positioned at one side of the joint of the first fixed contact group (110) and the first movable contact group (151);

the magnetic conduction piece (130) is positioned at one side of the connecting part of the second fixed contact group (120) and the second movable contact group (152);

The magnetic conduction piece (130) is positioned between the first fixed contact group (110) and the second movable contact group (152);

The magnetic conduction piece (130) is positioned between the second fixed contact group (120) and the first movable contact group (151).

4. A contact assembly according to claim 3, wherein the function of the magnetically permeable member (130) comprises at least one of:

when the first movable contact group (151) is closed and opened with the first fixed contact group (110), the magnetic conduction piece (130) is used for absorbing a magnetic field when the first movable contact group (151) is closed and opened with the first fixed contact group (110); and/or, the electric arc when the first movable contact group (151) and the first fixed contact group (110) are switched on and off is deflected;

When the second movable contact group (152) is closed and opened with the second fixed contact group (120), the magnetic conduction piece (130) is used for absorbing a magnetic field when the second movable contact group (152) is closed and opened with the second fixed contact group (120); and/or, deflecting the electric arc when the second movable contact group (152) and the second fixed contact group (120) are closed and opened;

when the first fixed contact group (110) and the second movable contact group (152) are closed and opened, the magnetic conduction piece (130) is used for absorbing a magnetic field when the first fixed contact group (110) and the second movable contact group (152) are closed and opened; and/or, deflecting the electric arc when the first fixed contact group (110) and the second movable contact group (152) are switched on and off;

when the second static contact group (120) is closed and opened with the first moving contact group (151), the magnetic conduction piece (130) is used for absorbing a magnetic field when the second static contact group (120) is closed and opened with the first moving contact group (151), and/or deflecting an electric arc when the second static contact group (120) is closed and opened with the first moving contact group (151).

5. The contact assembly of claim 1, wherein the magnetically permeable member (130) is at least one of: carbonyl iron; 10# steel; pure iron; DT4 pure iron; low carbon steel; iron-silicon alloy; iron-aluminum alloy; an Fe-Si-Al alloy; nickel-iron alloy; permalloy; iron-cobalt alloy; a soft magnetic ferrite; amorphous soft magnetic alloys; ultra-microcrystalline soft magnetic alloys.

6. A contact assembly according to claim 3, wherein the distance between the magnetic conductive member (130) and the connection of the stationary contact set and the moving contact set (150) comprises at least one of:

The space between the magnetic conduction piece (130) and the connection part of the first fixed contact group (110) and the first movable contact group (151) is 1mm to 20mm;

the space between the magnetic conduction piece (130) and the connection parts of the second fixed contact group (120) and the second movable contact group (152) is 1mm to 20mm;

the distance between the magnetic conduction piece (130) and the connection part of the first fixed contact group (110) and the second movable contact group (152) is 1mm to 20mm;

the distance between the magnetic conduction piece (130) and the connection part of the second fixed contact group (120) and the first movable contact group (151) is 1mm to 20mm.

7. A pole unit, characterized in that the pole unit (200) comprises a contact assembly (100) according to any one of claims 1-6.

8. The pole unit according to claim 7, wherein the pole unit (200) further comprises a housing (210), a groove (211) is provided on the housing, the groove (211) is correspondingly provided between the first fixed contact group (110) and the second fixed contact group (120) of the contact assembly (100), and is located at one side of a contact point of the moving contact group (150) and the fixed contact group of the contact assembly (100); the magnetic conduction piece (130) of the contact assembly (100) is clamped in the groove (211).

9. The pole unit of claim 7, wherein the pole unit (200) further comprises a load end (220), wherein the movable contact group (150) of the contact assembly (100) is fixedly connected with a braided cable, and wherein an end of the braided cable remote from the movable contact group (150) is flexibly connected with the load end (220).

10. The pole unit of claim 7, wherein the pole unit (200) further comprises an arc chute (230), the arc chute (230) being arranged at the connection of the moving contact group (150) and the first stationary contact group (110) and/or the second stationary contact group (120) of the contact assembly (100).

11. A transfer switch, characterized by comprising a pole unit (200) according to any one of claims 7-10.

12. A power distribution apparatus comprising the transfer switch of claim 11.