阅读说明：本技术 一种永磁式密封接触器 (Permanent magnet type sealing contactor ) 是由 彭碧辉 朱军 方旭 林罗豪 陈海多 黄晓湖 虞彭鑫 刘小龙 于 2019-10-05 设计创作，主要内容包括：本发明公开了一种永磁式密封接触器,该接触器通过高低电频转换控制器提供一个闭合脉冲电压,电磁工作系统通电,驱动永磁组件摆动,进而带动动簧片动作,实现动静触点接触,当脉冲电压消失,由于电磁工作系统中设有永磁体,磁场仍然存在,动静触头始终保持接触；当提供一个反向脉冲电压,形成反向磁场,驱动永磁组件反向摆动,动静触点分开；外壳嵌套在基座底板上,边缘经封胶加工形成气密性密封结构；保护罩卡扣在外壳外壁上形成接线保护。本发明采用永磁式电磁工作系统,电能消耗小,工作稳定可靠；采用气密式密封结构,大大提高产品的环境适应能力；采用保护罩,提高了产品接线的安全性。(The invention discloses a permanent magnet type sealing contactor, which provides a closed pulse voltage through a high-low frequency conversion controller, an electromagnetic working system is electrified to drive a permanent magnet assembly to swing so as to drive a movable reed 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 permanent magnet assembly is driven to reversely swing, and the moving contact and the static contact are separated; the shell is nested on the base bottom plate, and the edge of the shell is processed by sealing glue to form an airtight sealing structure; the protective cover is buckled on the outer wall of the shell to form wiring protection. The invention adopts a permanent magnet type electromagnetic working system, so that the electric energy consumption is small, and the work is stable and reliable; the airtight sealing structure is adopted, so that the environmental adaptability of the product is greatly improved; and the safety of product wiring is improved by adopting the protective cover.)

1. The utility model provides a sealed contactor of permanent magnetism, this contactor comprises sealed main part and terminal, its characterized in that: the sealing main body comprises an electromagnetic working system, a contact working system, a control rod, a base, a shell and a protective cover, wherein the electromagnetic working system and the contact working system are inserted on the base and are connected or disconnected through the control rod; 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 of not needing continuous electrification, and the electricity-saving performance is outstanding; the shell is nested on the base bottom plate, and the edge of the shell is processed by sealing glue to form an airtight sealing structure; the pin of electromagnetism operating system and external pulse power supply cooperation, the cooperation of the end of drawing forth and the load wiring end of contact operating system, the safety cover buckle forms the wiring protection on the shell outer wall.

2. A permanent magnet sealed 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 sealed 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 sealed 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 sealed 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 sealed 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.

7. A permanent magnet sealed contactor according to claim 1, wherein: the base is an injection molding body which is of an integrated structure and consists of a bottom plate, a contact working system mounting table and an electromagnetic working system mounting table, the bottom plate is of a rectangular structure, the edge of the bottom plate is matched with the shell, the bottom plate is inserted into the shell in a clamping mode, and sealing is achieved through sealing glue; the contact working system mounting table main body is of a rectangular frame structure, a static spring mounting seat and a movable spring mounting seat which are of a cuboid structure are arranged in the contact working system mounting table main body, the bottom of the movable spring mounting seat extends to the lower portion of the electromagnetic working system mounting table, and the creepage distance is effectively increased by adopting concave-convex rectangular teeth, so that the insulativity is improved; the electromagnetic working system mounting platform is close to the contact working system mounting platform, a semi-closed rectangular protective structure is adopted, caulking grooves are formed in two side walls and used as yoke mounting grooves for inserting yokes, and rotating shaft holes are formed in the two side walls and used for mounting rotating shafts; the top is provided with a notch which is used as a yielding port and is used as the yielding of the top end of the armature I, and by adopting the structure, the creepage distance can be effectively increased, and the electrical insulation protection performance is improved;

a permanent magnet sealed contactor according to claim 1, wherein: the shell is a cuboid hollow shell with an opening at one end, and the size of an inner hole is matched with the bottom plate of the base; the three lateral surface of shell respectively is equipped with a rectangular channel on as the constant head tank bottom is equipped with a little wedge type square boss as the buckle platform, with the bayonet socket cooperation of the connecting plate of safety cover realizes the safety cover and seal shell's fixed, and the top edge is equipped with the card strip, with the cooperation of safety cover cardboard.

8. A permanent magnet sealed contactor according to claim 1, wherein: the protective cover is of a stepped rectangular cover shell structure, the size of the bottom of the protective cover is consistent with that of the shell, three rectangular connecting plates are respectively arranged on the edges of the bottom of the protective cover, a rectangular opening is arranged in the middle of each connecting plate and is used as a bayonet to be matched with a bayonet table of the shell, and clamping plates are arranged on the periphery of the edge of the bottom of the protective cover and are matched with clamping strips at the top of the shell; two square holes are arranged on one side of the bottom of the base and are used as pin ports, and pins of the coil assembly arranged on the base penetrate through the pin ports; the protection cover is respectively provided with a static spring leading-out end wire locking cover and a dynamic spring leading-out end wire locking cover, wherein the top surface of each leading-out end wire locking cover is provided with a rectangular wire locking interface, the side surface of each leading-out end wire locking cover is provided with a round screw fastening port, and the leading-out end wire locking cover is used for leading-out end protection; because the movable spring draws forth the end longer, the safety cover is established to right angle ladder structure of bending, set up two on the bottom plate respectively and draw forth the end guiding hole, wear out as drawing forth the end direction, be equipped with two locking wire terminal fixed slots respectively between lower floor's bottom plate and the roof, the locking wire terminal card is put in the fixed slot, the movable spring draws forth the end and passes the bottom plate through drawing forth the end guiding hole, the locking wire screw passes through screw fastening mouth locking wire terminal and movable spring and draws forth the end, the static spring draws forth the end and passes the bottom plate through drawing forth the end guiding hole, the locking wire screw passes through screw fastening mouth locking wire terminal.

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.

In addition, working devices of contactors for controlling electric loads sold in the market are exposed in the atmosphere, dust, moisture, corrosive gas and the like in the using environment can pollute the contact of the contactor, the contact is increased in coking, ignition and ignition, and the effective service life of the contactor is shortened.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a permanent magnet type sealing contactor, which adopts an electromagnetic working system with a permanent magnet structure, and has the advantages of low electric energy consumption and stable and reliable work; the airtight sealing structure is adopted, so that the environmental adaptability of the product is greatly improved, and severe environments such as moisture, dust and the like can be met; and the safety of product wiring is further improved by adopting the protective cover.

In order to achieve the purpose, the invention provides the following technical scheme: a permanent magnet type sealed contactor is composed of a sealed main body and a wiring terminal, wherein the sealed main body comprises an electromagnetic working system, a contact working system, a control rod, a base, a shell and a protective cover, the electromagnetic working system and the contact working system are inserted on the base, and the electromagnetic working system and the contact working system are connected or disconnected through the control rod; 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 of not needing continuous electrification, and the electricity-saving performance is outstanding; the shell is nested on the base bottom plate, and the edge of the shell is processed by sealing glue to form an airtight sealing structure; the pin of electromagnetism operating system and external pulse power supply cooperation, the cooperation of the end of drawing forth and the load wiring end of contact operating system, the safety cover buckle forms the wiring protection on the shell outer wall.

The invention relates to a permanent magnet type sealing 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 and high-strength material is symmetrically arranged in two side plates of the electromagnetic mounting seat along the north and 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 amplitude by magnetic field force; 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 type sealing 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, the side plates are provided with two rectangular through holes, 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 type sealing contactor, wherein a 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 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 I pushes a 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.

The invention relates to a permanent magnet type sealing 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 arched door-shaped installation piece, an installation hole is formed in the installation piece, and a fixed end of a rectangular boss structure is arranged in the middle of the top of; 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 type sealing contactor, wherein one end of a control rod is provided with a bayonet, after a movable reed 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 invention relates to a permanent magnet type sealing contactor, wherein a base is an injection molding body which is of an integrated structure and consists of a bottom plate, a contact working system mounting table and an electromagnetic working system mounting table, the bottom plate is of a rectangular structure, the edge of the bottom plate is matched with a shell, the bottom plate is inserted into the shell in a clamping manner, and sealing is realized through sealing glue; the contact working system mounting table main body is of a rectangular frame structure, a static spring mounting seat and a movable spring mounting seat which are of a cuboid structure are arranged in the contact working system mounting table main body, the bottom of the movable spring mounting seat extends to the lower portion of the electromagnetic working system mounting table, and the creepage distance is effectively increased by adopting concave-convex rectangular teeth, so that the insulativity is improved; the electromagnetic working system mounting platform is close to the contact working system mounting platform, a semi-closed rectangular protective structure is adopted, caulking grooves are formed in two side walls and used as yoke mounting grooves for inserting yokes, and rotating shaft holes are formed in the two side walls and used for mounting rotating shafts; the top is provided with a notch which is used as a yielding port and is used as the yielding of the top end of the armature I, and by adopting the structure, the creepage distance can be effectively increased, and the electrical insulation protection performance is improved;

the invention relates to a permanent magnet type sealing contactor, wherein the shell is a cuboid hollow shell with an opening at one end, and the size of an inner hole is matched with the bottom plate of the base; the three lateral surface of shell respectively is equipped with a rectangular channel on as the constant head tank bottom is equipped with a little wedge type square boss as the buckle platform, with the bayonet socket cooperation of the connecting plate of safety cover realizes the safety cover and seal shell's fixed, and the top edge is equipped with the card strip, with the cooperation of safety cover cardboard.

The invention relates to a permanent magnet type sealing contactor, wherein a protective cover is of a stepped rectangular housing structure, the size of the bottom of the protective cover is consistent with that of a shell, three rectangular connecting plates are respectively arranged on the edges of the bottom of the protective cover, a rectangular opening is arranged in the middle of each connecting plate and is used as a bayonet to be matched with a buckling platform of the shell, and clamping plates are arranged on the periphery of the edge of the bottom of the protective cover and are matched with clamping strips at the top of the shell; two square holes are arranged on one side of the bottom of the base and are used as pin ports, and pins of the coil assembly arranged on the base penetrate through the pin ports; the protection cover is respectively provided with a static spring leading-out end wire locking cover and a dynamic spring leading-out end wire locking cover, wherein the top surface of each leading-out end wire locking cover is provided with a rectangular wire locking interface, the side surface of each leading-out end wire locking cover is provided with a round screw fastening port, and the leading-out end wire locking cover is used for leading-out end protection; because the movable spring draws forth the end longer, the safety cover is established to right angle ladder structure of bending, set up two on the bottom plate respectively and draw forth the end guiding hole, wear out as drawing forth the end direction, be equipped with two locking wire terminal fixed slots respectively between lower floor's bottom plate and the roof, the locking wire terminal card is put in the fixed slot, the movable spring draws forth the end and passes the bottom plate through drawing forth the end guiding hole, the locking wire screw passes through screw fastening mouth locking wire terminal and movable spring and draws forth the end, the static spring draws forth the end and passes the bottom plate through drawing forth the end guiding hole, the locking wire screw passes through screw fastening mouth locking wire terminal.

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, and the movable contact is in contact with or disconnected from the fixed contact through the control rod connecting the armature I and the movable contact, so that the overall structure is 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; according to the invention, the electromagnetic working system and the contact working system are both arranged on the base, the base is nested in the shell, and the edge of the base, which is in contact with the shell, is processed by sealing glue to form a sealing system, so that the environmental adaptability of the product in use is greatly improved and expanded; according to the invention, the protective cover is sleeved on the shell, and the leading-out ends and the wiring ends of the moving and static springs of the sealing main body are all placed in the protective cover, so that the use is safer.

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