CN110634710A

CN110634710A - Permanent magnetic contactor

Info

Publication number: CN110634710A
Application number: CN201910946465.9A
Authority: CN
Inventors: 朱军; 方旭; 林罗豪; 陈海多; 彭碧辉; 黄晓湖; 虞彭鑫; 刘小龙
Original assignee: Zhejiang United States Shuo Electric Polytron Technologies Inc
Current assignee: Zhejiang United States Shuo Electric Polytron Technologies Inc
Priority date: 2019-10-05
Filing date: 2019-10-05
Publication date: 2019-12-31

Abstract

The invention discloses a permanent magnet type contactor, which provides a closed pulse voltage through a high-low frequency conversion controller, an electromagnetic working system is electrified to drive an armature component to swing so as to drive a movable spring to act and realize the contact of a movable contact and a fixed contact, when the pulse voltage disappears, as a permanent magnet is arranged in the electromagnetic working system, a magnetic field still exists, and the movable contact and the fixed contact are always kept in contact; when a reverse pulse voltage is provided, a reverse magnetic field is formed, the armature component is driven to swing reversely, and the moving contact and the static contact are separated. The invention adopts a permanent magnet type electromagnetic working system, has small electric energy consumption, stable and reliable work, compact product structure and small volume, and can better meet the requirement of modern electrical installation.

Description

Permanent magnetic contactor

Technical Field

The invention relates to a contactor, in particular to a permanent magnet type sealing contactor for controlling an electrical load, and belongs to the technical field of electrical equipment.

Background

The contactor is an electric appliance which utilizes the current flowing through the coil to generate a magnetic field to close the contact so as to control the load, when the coil of the contactor is electrified, the coil current can generate the magnetic field, the generated magnetic field enables the static iron core to generate electromagnetic attraction to attract the movable iron core and drive the contact of the alternating current contactor to act, the normally closed contact is opened, the normally open contact is closed, and the normally closed contact and the normally open contact are linked; when the coil is powered off, the electromagnetic attraction disappears, the armature is released under the action of the release spring, the contact is restored, the normally open contact is disconnected, and the normally closed contact is closed.

When the contactor works, the contact action is realized through a magnetic field generated by electrifying the coil, the traditional contactor frequently acts, the consumed electric quantity is large, the action of the contactor is realized, meanwhile, the consumption of electric energy is effectively reduced, and the contactor becomes a hotspot for industry development.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the permanent magnet type contactor, which adopts an electromagnetic working system with a permanent magnet structure, has the advantages of low electric energy consumption, stable and reliable work, compact product structure and small volume, and can better meet the requirements of modern electrical installation.

In order to achieve the purpose, the invention provides the following technical scheme: the contactor comprises an electromagnetic working system, a contact working system and a control rod, wherein the electromagnetic working system and the contact working system are connected or disconnected through the control rod, when the contactor works, a closed pulse voltage is provided through a high-low frequency conversion controller, the electromagnetic working system is electrified to form a magnetic field to drive an armature component to swing, and an armature I drives the control rod to push a movable spring of the contact working system to realize the contact of a movable contact and a fixed contact; when the movable and static contacts are required to be separated, a reverse cut-off pulse voltage is provided, the electromagnetic working system is electrified reversely to form a reverse magnetic field, the armature component is driven to swing reversely, the armature I drives the control rod to pull the movable spring of the contact working system reversely, the movable and static contacts are separated, the product contact can be in a contact or cut-off state under the condition that continuous electrification is not required, and the electricity-saving performance is outstanding.

The invention relates to a permanent magnet type contactor, wherein an electromagnetic working system comprises a permanent magnet assembly and a coil assembly, wherein the permanent magnet assembly consists of an armature I, an armature II, a permanent magnet and an electromagnetic mounting seat, the permanent magnet is embedded and injected in the middle of the electromagnetic mounting seat, the armature made of high-permeability high-strength material is symmetrically arranged in two side plates of the electromagnetic mounting seat along the north-south poles and the north-south poles of the permanent magnet direction, the two poles of the armature are respectively magnetized into south poles and north poles, the magnetization of the two poles extends to the two ends of the armature, the electromagnetic mounting seat is fixed on a base through a rotating shaft in the middle, and the electromagnetic mounting seat is driven to swing on the rotating shaft in a small; the coil assembly consists of pins, an iron core, a yoke, a framework and an enameled wire, wherein forward or reverse rated pulse voltage is applied to the two pins respectively, the magnetic conducting iron core is electrified and magnetized, a bipolar magnetic field is formed at two ends of the yoke, and the framework is provided with an insert block for mounting and positioning with the base.

The invention relates to a permanent magnet contactor, wherein an electromagnetic mounting seat is of an integrated structure consisting of side plates and a fixed block, the fixed block is arranged in the middle, two sides of the fixed block are respectively connected with one side plate, two rectangular through holes are arranged on the side plates, and the two rectangular through holes are armature mounting holes and are in interference fit with an armature and used for fixedly mounting the armature; the fixing block is of a long strip rectangular structure, a round through hole is formed in the middle of the fixing block and matched with the rotating shaft, a small rectangular boss is arranged at the lower portion of the fixing block, a rectangular permanent magnet is embedded in the boss, and two ends of the permanent magnet are exposed and used for positioning during injection molding.

The invention relates to a permanent magnet contactor, wherein a contact working system consists of a static spring and a movable spring, the static spring comprises a static contact, a static spring piece and a static spring leading-out end, the movable spring comprises a movable contact, a movable spring piece and a movable spring leading-out end, an armature iron arranged on an electromagnetic mounting seat after being electrified is acted by magnetic field force and swings around a rotating shaft, a push block at the top end of the armature iron I pushes a control rod so as to drive the movable spring piece at the other end of the control rod and then drive the movable contact to move and contact with the static contact; when reverse pulse voltage is applied, the magnetic field acts reversely, the push block at the top end of the armature I pulls the control rod reversely to drive the movable spring at the other end of the control rod, and the movable contact is separated from the static contact.

The invention relates to a permanent magnet contactor, wherein a movable spring piece consists of two thin sheets respectively, an elastic piece I and an elastic piece II are sequentially arranged from top to bottom, one end of the movable spring piece, which corresponds to a leading-out end of the movable spring, is of a rectangular structure and is fixedly riveted with the leading-out end of the movable spring through three anchor points, a semicircular buffering arch is arranged at one end of the elastic piece I, which is close to the leading-out end of the movable spring, the other end of the elastic piece I is provided with an arch mounting piece, a mounting hole is formed in the mounting piece, and a fixed end of a rectangular boss structure is arranged in the middle of the top of an action end; the elastic piece II is a rectangular plate, a mounting hole is formed in the action end of the elastic piece II, the moving contact is riveted with the mounting piece of the elastic piece I and the elastic piece II through a rivet, the top end parts of the elastic piece I and the elastic piece II are separated from each other by virtue of elasticity, and a rectangular right-angled bent fixing hook is arranged in the middle of the top end of the elastic piece II.

The invention relates to a permanent magnet contactor, wherein one end of a control rod is provided with a bayonet, after a movable spring is inserted into the bayonet, the fixed end and a fixed hook are clamped in the bayonet, and the other end of the control rod is provided with an embedding groove which is tightly matched and clamped with a pushing block of an armature I in an interference fit manner.

The electromagnetic working system adopting the permanent magnet has the advantages that when the electromagnetic working system works, the closed pulse voltage is provided by the high-low frequency switching controller, the electromagnetic system is electrified to form a magnetic field to drive the armature component to swing, the armature drives the control rod to push the shunt reed of the contact system to realize the contact of the movable contact and the fixed contact, when the pulse voltage disappears, the magnetic field still exists because the permanent magnet is arranged in the electromagnetic system, the movable contact and the fixed contact are always kept in contact by the magnetic field force, and the separation of the movable contact and the fixed contact can be realized only by applying a reverse pulse voltage to the traditional contactor, the traditional contactor only needs to supply power all the time, the movable contact and the fixed contact are in contact due to the left and right magnetic field force, when the power is cut off, the magnetic field force disappears, the movable contact and the fixed contact are separated to realize the cut-off, and the traditional contactor consumes, the service life of electrical components is influenced by frequent power-on and power-off; according to the permanent magnet system, the permanent magnet is embedded at the bottom of the electromagnetic mounting seat, the armature I and the armature II are respectively fixed on the two side plates of the electromagnetic mounting seat, the permanent magnet component swings around the rotating shaft through the magnetic field force of the armature dipolar magnetization field, the movable contact is driven to be in contact with or disconnected from the stationary contact through the control rod connecting the armature I and the movable contact, the overall structures of the electromagnetic working system, the contact working system and the control rod are simple and compact, the product volume is smaller than that of a conventional product, and the requirement of small-volume high-density installation of modern electric elements is more easily met; the movable contact spring is composed of a spring plate I and a spring plate II in sequence from top to bottom, the movable contact spring is fixedly riveted with a leading-out end of the movable contact spring through three anchor points, the spring plate I is provided with a semicircular buffering arch, the other end of the spring plate I is provided with an arched door-shaped mounting piece, the movable contact is riveted with the mounting piece of the spring plate I and the spring plate II through rivets, and the top end parts of the spring plate I and the spring plate II are separated from each other through elasticity.

The invention is further described below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a working principle diagram (closed) of the embodiment of the present invention.

Fig. 3 is a working principle diagram (disconnected) of the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an electromagnetic working system according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a permanent magnet assembly according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a movable spring according to an embodiment of the present invention.

In the figure: the magnetic circuit breaker comprises a permanent magnet assembly 1, an armature 11I, a 111 push block, an armature 12 II, a permanent magnet 13, an electromagnetic mounting seat 14, a side plate 141, a fixed block 142, a coil assembly 2, a pin 21, an iron core 22, a yoke 23, a skeleton 24, an enameled wire 25, a movable spring 3, a movable contact 31, a movable spring 32, a spring piece 321I, a fixed end 3211, a buffer arch 3212, a 3213 mounting piece, a spring piece 322 II, a fixed hook 3221, a leading-out end of the movable spring 33, a static spring 4, a static contact 41, a static spring 42, a static spring 43, a leading-out end of a control rod 5, a bayonet 51, a caulking groove 52, a base 6.

The embodiment of the invention provides a permanent magnet type contactor, which adopts an electromagnetic working system with a permanent magnet structure, has the advantages of low power consumption, stable and reliable work, compact product structure and small volume, and can better meet the requirements of modern electrical installation.

As shown in fig. 1, 2 and 3, a permanent magnetic contactor according to an embodiment of the present invention includes an electromagnetic operating system, a contact operating system and 5 control rods, the electromagnetic operating system and the contact operating system are inserted in a 6 base, and the electromagnetic operating system and the contact operating system are connected or disconnected through the 5 control rods, when the contactor works, a high-low power frequency conversion controller provides a closed pulse voltage, the electromagnetic operating system is powered on to form a magnetic field to drive an armature assembly to swing, 11 armature I drives the 5 control rods to push 32 movable reeds of the contact operating system, so as to achieve contact between the movable contact and the fixed contact, when the pulse voltage disappears, because the electromagnetic operating system is provided with 13 permanent magnets, the magnetic field still exists, and the magnetic field force keeps the movable contact 31 and the fixed contact 41 in contact all the time, thereby overcoming the disadvantages of frequent opening and closing of the conventional; when the movable and static contacts are required to be separated, a reverse cut-off pulse voltage is provided, the electromagnetic working system is electrified reversely to form a reverse magnetic field, the armature component is driven to swing reversely, the 11 armature I drives the 5 control rod to pull the 32 movable reeds of the contact working system reversely, the movable and static contacts are separated, the product contact can be in a contact or cut-off state under the condition that continuous electrification is not required, and the electricity-saving performance is outstanding.

As shown in fig. 1, 4 and 5, a permanent magnet contactor according to an embodiment of the present invention includes a permanent magnet assembly 1 and a coil assembly 2, where the permanent magnet assembly 1 includes a 11 armature I, a 12 armature II, a 13 permanent magnet, and a 14 electromagnetic mounting base, where the 13 permanent magnet is embedded and injection molded in the middle of the 14 electromagnetic mounting base, the armature made of a high magnetic permeability and high strength material is symmetrically arranged in two 141 side plates of the 14 electromagnetic mounting base along the direction of the 13 permanent magnet, the two poles of the armature are respectively magnetized into a south pole and a north pole, the two poles of the armature are magnetized and extended to the two ends of the armature, the 14 electromagnetic mounting base is fixed on a 6 base through a 7 rotating shaft in the middle, and the 14 electromagnetic mounting base is driven to swing on the 7 rotating shaft by a magnetic field force formed by energization; the 2 coil assembly consists of 21 pins, a 22 iron core, a 23 yoke, a 24 skeleton and 25 enameled wires, wherein forward or reverse rated pulse voltage is applied to the two 21 pins respectively, the 22 iron core is electrified and magnetized, a bipolar magnetic field is formed at two ends of the 23 yoke, and an insert block is arranged on the 24 skeleton and used for mounting and positioning with the 6 base.

The embodiment of the invention discloses a permanent magnet contactor, wherein a 14 electromagnetic mounting seat is of an integrated structure consisting of a 141 side plate and a 142 fixed block, the 142 fixed block is arranged in the middle, two sides of the 142 fixed block are respectively connected with the 141 side plate, the 141 side plate is provided with two rectangular through holes, and the two rectangular through holes are armature mounting holes which are in interference fit with an armature and are used for fixedly mounting the armature; the 142 fixed block is a long strip rectangular structure, the middle of the 142 fixed block is provided with a round through hole which is matched with the 7 rotating shaft, the lower part of the 142 fixed block is provided with a small rectangular boss, a rectangular 13 permanent magnet is embedded in the boss, and two ends of the 13 permanent magnet are exposed and used for positioning during injection molding.

As shown in fig. 1, 2, 3, and 6, a permanent magnet contactor according to an embodiment of the present invention includes a contact operating system including a 4 static spring and a 3 dynamic spring, the 4 static spring includes a 41 static contact, a 42 static spring, and a 43 static spring leading-out end, the 3 dynamic spring includes a 31 dynamic contact, a 32 dynamic spring, and a 33 dynamic spring leading-out end, an armature mounted on a 14 electromagnetic mount is acted by a magnetic field force after being powered on and swings around a 7 rotating shaft, a 111 push block at a top end of an 11 armature I pushes a 5 control rod, thereby driving the 32 dynamic spring at the other end of the 5 control rod, driving the 31 dynamic contact to move, and contacting with the 41 static contact; when reverse pulse voltage is applied, the magnetic field acts reversely, the 5 control rod is pulled reversely by the 111 push block at the top end of the 11 armature I, and the 32 movable contact spring at the other end of the 5 control rod is driven, so that the 31 movable contact is separated from the 41 fixed contact.

As shown in fig. 6, in the permanent magnet contactor according to the embodiment of the present invention, the 32 movable spring pieces are respectively composed of two thin pieces, from top to bottom, 321 spring pieces I and 322 spring pieces II are sequentially provided, one end of the 32 movable spring piece corresponding to the leading-out end of the 33 movable spring piece is in a rectangular structure, and is riveted and fixed with the leading-out end of the 33 movable spring piece through three anchor points, wherein a half-arc 3212 buffer arch is provided at one end of the 321 spring piece I adjacent to the leading-out end of the 33 movable spring piece, an arched 3213 mounting piece is provided at the other end, a mounting hole is provided on the 3213 mounting piece, and a 3211 fixed end having a rectangular boss structure is provided in the middle of the top of the action end of the; the 322 shrapnel II is a rectangular plate, the action end of the 322 shrapnel II is provided with a mounting hole, the 31 moving contact is riveted with the 3213 mounting piece of the 321 shrapnel I and the 322 shrapnel II together through a rivet, the top end parts of the 321 shrapnel I and the 322 shrapnel II are separated from each other by virtue of elasticity, and the middle of the top end of the 322 shrapnel II is provided with a rectangular and right-angled 3221 fixing hook.

As shown in fig. 2 and fig. 3, in the permanent magnet contactor according to the embodiment of the present invention, a 51 bayonet is arranged at one end of a control rod 5, after a movable spring 32 is inserted into the 51 bayonet, the fixed end 3211 and the fixed hook 3221 are inserted into the 51 bayonet, and a 52 caulking groove is arranged at the other end to be tightly fitted and clamped with the 111 pushing block of the 11 armature I.

The present embodiments are to be considered as illustrative and not restrictive, and all changes and modifications that come within the spirit of the invention are desired to be protected by the following claims.

Claims

1. A permanent magnet contactor is characterized in that: the contactor comprises an electromagnetic working system, a contact working system and a control rod, wherein the electromagnetic working system and the contact working system are connected or disconnected through the control rod, when the contactor works, a closed pulse voltage is provided through a high-low frequency conversion controller, the electromagnetic working system is electrified to form a magnetic field to drive an armature component to swing, and an armature I drives the control rod to push a movable spring of the contact working system to realize the contact of a movable contact and a fixed contact; when the movable and static contacts are required to be separated, a reverse cut-off pulse voltage is provided, the electromagnetic working system is electrified reversely to form a reverse magnetic field, the armature component is driven to swing reversely, the armature I drives the control rod to pull the movable spring of the contact working system reversely, the movable and static contacts are separated, the product contact can be in a contact or cut-off state under the condition that continuous electrification is not required, and the electricity-saving performance is outstanding.

2. A permanent magnet contactor according to claim 1, wherein: the electromagnetic working system comprises a permanent magnet assembly and a coil assembly, wherein the permanent magnet assembly consists of an armature I, an armature II, a permanent magnet and an electromagnetic mounting seat, the permanent magnet is embedded and injected in the middle of the electromagnetic mounting seat, the armature made of high-permeability and high-strength material is symmetrically arranged in two side plates of the electromagnetic mounting seat along the north-south poles of the permanent magnet, the two poles of the armature are respectively magnetized into south poles and north poles, the two poles are magnetized and extended to the two ends of the armature, the electromagnetic mounting seat is fixed on a base through a rotating shaft in the middle, and the electromagnetic mounting seat is driven to swing on the rotating shaft in a small amplitude by magnetic field force formed by electrify; the coil assembly consists of pins, an iron core, a yoke, a framework and an enameled wire, wherein forward or reverse rated pulse voltage is applied to the two pins respectively, the magnetic conducting iron core is electrified and magnetized, a bipolar magnetic field is formed at two ends of the yoke, and the framework is provided with an insert block for mounting and positioning with the base.

3. A permanent magnet contactor according to claim 1 or 2, wherein: the electromagnetic mounting seat is of an integrated structure consisting of side plates and a fixing block, the fixing block is arranged in the middle, two sides of the fixing block are respectively connected with one side plate, two rectangular through holes are formed in the side plates, and the two rectangular through holes are armature mounting holes and are in interference fit with an armature to be used for fixedly mounting the armature; the fixing block is of a long strip rectangular structure, a round through hole is formed in the middle of the fixing block and matched with the rotating shaft, a small rectangular boss is arranged at the lower portion of the fixing block, a rectangular permanent magnet is embedded in the boss, and two ends of the permanent magnet are exposed and used for positioning during injection molding.

4. A permanent magnet contactor according to claim 1, wherein: the contact working system consists of a static spring and a movable spring, the static spring comprises a static contact, a static reed and a static spring leading-out end, the movable spring comprises a movable contact, a movable reed and a movable spring leading-out end, an armature mounted on the electromagnetic mounting seat after being electrified is acted by magnetic field force and swings around a rotating shaft, and a push block at the top end of the armature I pushes the control rod so as to drive the movable reed at the other end of the control rod and then drive the movable contact to move and contact with the static contact; when reverse pulse voltage is applied, the magnetic field acts reversely, the push block at the top end of the armature I pulls the control rod reversely to drive the movable spring at the other end of the control rod, and the movable contact is separated from the static contact.

5. A permanent magnet contactor according to claim 1 or 4, wherein: the movable spring piece is respectively composed of two sheets, and is sequentially provided with a spring piece I and a spring piece II from top to bottom, one end of the movable spring piece, which corresponds to a leading-out end of the movable spring, is of a rectangular structure and is riveted and fixed with the leading-out end of the movable spring through three anchor points, wherein one end of the spring piece I, which is close to the leading-out end of the movable spring, is provided with a semicircular buffering arch, the other end of the spring piece I is provided with an arch mounting piece, the mounting piece is provided with a mounting hole, and the middle of the top of an action end of the spring piece I is provided; the elastic piece II is a rectangular plate, a mounting hole is formed in the action end of the elastic piece II, the moving contact is riveted with the mounting piece of the elastic piece I and the elastic piece II through a rivet, the top end parts of the elastic piece I and the elastic piece II are separated from each other by virtue of elasticity, and a rectangular right-angled bent fixing hook is arranged in the middle of the top end of the elastic piece II.

6. A permanent magnet contactor according to claim 1, wherein: one end of the control rod is provided with a bayonet, the fixed end and the fixed hook are clamped in the bayonet after the movable spring is inserted into the bayonet, and the other end of the control rod is provided with an embedding groove which is clamped by the pushing block of the armature I in an interference fit manner.