KR20120039206A - Manufacturing method of sealed contactor - Google Patents

Manufacturing method of sealed contactor Download PDF

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Publication number
KR20120039206A
KR20120039206A KR1020100100771A KR20100100771A KR20120039206A KR 20120039206 A KR20120039206 A KR 20120039206A KR 1020100100771 A KR1020100100771 A KR 1020100100771A KR 20100100771 A KR20100100771 A KR 20100100771A KR 20120039206 A KR20120039206 A KR 20120039206A
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KR
South Korea
Prior art keywords
vent
contact
sealing
forming
chamber
Prior art date
Application number
KR1020100100771A
Other languages
Korean (ko)
Inventor
최연순
Original Assignee
엘에스산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020100100771A priority Critical patent/KR20120039206A/en
Publication of KR20120039206A publication Critical patent/KR20120039206A/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/64—Protective enclosures, baffle plates, or screens for contacts
    • H01H1/66—Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • H01H2050/025—Details concerning sealing, e.g. sealing casing with resin containing inert or dielectric gasses, e.g. SF6, for arc prevention or arc extinction

Abstract

The present invention relates to an electronic switchgear device for injecting and sealing SOHO gas into the airtight space, the sealing contact structure for injecting the SOHO gas by forming a vent in the airtight space of the extinguishing portion is arranged movable contact and the mobile contact and sealing the vent Including a method of manufacturing, it is possible to provide a method of sealing the space to lower the unit cost of the product, and improve the reliability of the sealing.

Description

Manufacturing method of Sealed contactor

The present invention relates to an electronic switchgear, and more particularly, to an electronic switchgear for sealing by injecting SOHO gas into the airtight space of the electronic switchgear.

Electronic switchgear that opens and closes DC power is installed between a battery and a DC power converter in an electric vehicle such as a hybrid car, a fuel cell car, a golf cart, and an electric forklift truck to convert DC power from a battery to DC power. Function to supply or shut off the device.

In addition, the electronic switchgear for opening and closing the DC power is installed between the DC generator and the inverter for converting the galvanic power into AC power of commercial frequency and voltage in an eco-friendly power generation system such as a solar power system and a wind power generation system. In addition, it also functions to supply or cut off DC power to the inverter.

The electronic opening and closing device may include an actuator having a fixed contact and a movable contact and driving an movable contact to enable the opening and closing control of the contact.

In particular, the electronic switchgear for opening and closing the DC power used in electric vehicles, when the movable contact is momentarily released from the fixed contact, that is, when the contact is off (arc) can be generated (arc) and the arc quickly Spaces in which contacts are arranged for extinguishing constitute a hermetic space and are to be filled with SOHO gas in the hermetic space.

Soho gas needs to be kept above a certain level in an airtight space in order to maintain its life as a certain level of electronic components and to maintain reliable function. Therefore, SOHO gas needs a technology for sealing.

The present invention provides a method of manufacturing an electronic switchgear device capable of sealing a space capable of containing an arc extinguishing gas for extinguishing an arc generated when the contact point of the electronic switchgear is turned off.

The present invention provides a method capable of sealing a space without using a subsidiary material when generating an airtight space of the electronic switchgear.

According to a preferred embodiment of the present invention, a method of manufacturing a sealed contact combines a housing, a connecting body, and a plate, which form a gas tight space in which a fixed contact and a movable contact are disposed, and forms a space in which a core for driving the movable contact is disposed. Forming a combination having a sealing structure by combining a cylinder, forming a vent for the supply and exhaust of SOHO gas in a portion of the combination, placing the combination is formed in the chamber and the chamber hydrogen (H 2 ) atmosphere Forming a furnace and sealing the assembly by welding a vent formed in the assembly in a chamber.

In addition, the forming of the laminate may combine the housing, the connecting member and the cylinder to form a sealing structure.

In addition, the step of forming the vent to form a vent projecting outward in the lower portion of the cylinder.

Also. In the forming of the chamber in a hydrogen atmosphere, a combination in which a vent is formed in a cylinder is placed in the chamber, and hydrogen gas is injected into the chamber in a vacuum state at a predetermined pressure.

In addition, the step of sealing the binder deforms the vent formed in the cylinder in the chamber in the hydrogen atmosphere and welds the modified vent.

In addition, the step of sealing the assembly seals the assembly by projecting welding or laser welding the modified vent.

The present invention can obtain an electronic switchgear that can seal a space that can contain the arc extinguishing gas for extinguishing the arc generated when the contact of the electronic switchgear off.

The present invention can provide a method of lowering the unit cost of the product by sealing the space without using the subsidiary material when generating the airtight space of the electronic switchgear, and improve the reliability of the sealing.

1 is a view showing an electronic switching device according to an embodiment of the present invention.
2 is a view showing the opening and closing state of the electronic switchgear according to an embodiment of the present invention.
3 is a view showing an airtight space into which the arc extinguishing gas of the electronic switching device according to an embodiment of the present invention is injected.
4 is a view showing a sealing contact manufacturing structure (I) according to an embodiment of the present invention.
5 is a view showing a sealed contact manufacturing structure (II) according to another preferred embodiment of the present invention.
6 is a view showing a sealed contact manufacturing structure (III) according to another preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a view showing an electronic switching device according to an embodiment of the present invention. Referring to FIG. 1, the electronic switching device 100 includes a extinguishing unit 110 and a driving unit 120.

The extinguishing unit 110 includes a fixed contact 111 and a movable contact 112, and includes an opening and closing structure of the contact so that switching to an external device connected to the electronic switching device 100 is performed.

The driver 120 includes an actuator to control the opening and closing of the contact using an electrical signal. The electronic switch device 100 typically switches an external device connected to the electronic switch device 100 by the vertical movement of the driving unit 120 through the actuator.

The driving unit 120 generates a magnetic force by an electrical signal to generate a driving force of the contact point 121, a fixed iron core 122 is fixedly disposed inside the excitation coil 121, a fixed iron core 122 It has a movable iron core 123 disposed to face to.

Between the excitation coil 121 and the fixed iron core 122 and the movable iron core 123 is provided a coil bobbin 124 recommended for the excitation coil 121, the vertical direction along the axial direction of the coil bobbin 124 The fixed iron core 122 and the movable iron core 123 are disposed. The fixed iron core 122 and the movable iron core 123 form a magnetic path through which magnetic flux generated by the excitation coil 121 passes. The movable iron core 123 has a driving force to move up and down by the magnetic flux generated by the excitation coil 121.

Between the coil bobbin 124 and the fixed iron core 122 and the movable iron core 123 is made of a nonmagnetic material, the plunger is formed in a cylindrical shape that is open on the side of the arcuate portion 110, the bottom of the other side is blocked. A cap or cylinder 125.

The plunger cap or cylinder 125 has a form such as a container in which the fixed iron core 122 and the movable iron core 123 are accommodated, and the outer diameter of each of the fixed iron core 122 and the movable iron core 123 is a plunger cap 125. It is formed into a cylindrical shape having a diameter the same as the inner diameter in). The movable iron core 123 is movable in the axial direction of the plunger cap 125.

The moving range of the movable core 123 is determined between the joining position to be joined to the fixed core 122 and the bottom surface of the other side of the plunger cap 125 and the initial position falling. The joining force of the movable core 123 and the fixed core 122 is provided by the coil spring by the excitation coil 121, and the spring force in the direction in which the movable core 123 returns to the initial position is a return spring ( 126).

A insertion hole 127 through which the fixed iron core 122 is inserted is provided at the center of the driving unit 120, and the fixed iron core 122 is inserted into the insertion hole 127 to the driving unit 120. It is fixed.

A central portion of the driving unit 120 is provided with a movable iron core 123 that is approached and spaced apart from the fixed iron core 122. Inside the core bobbin 124 of the central portion may be provided with a guide for guiding the movement of the movable core (123).

In addition, the central portion of the fixed iron core 122 and the movable iron core 123 has a through hole 128 is provided with a shaft 130 connected through the arc-shaped unit 110 and the drive unit 120 in the axial direction. The shaft 130 penetrates in the axial direction through the through hole 128, and the shaft 130 has a movable contact 112 at the upper end and a movable iron core 123 at the lower end thereof. The vertical movement of the transfer to the movable contact (112).

A housing 114, which is formed in a box shape having a lower opening, is installed in a form above the driving unit 120. A terminal hole is provided at an upper portion of the housing 114, and a fixed contact 111 is provided through the terminal hole. And the fixed terminal 115 is inserted.

Inside the housing 114, a movable contact 112 is disposed at the bottom of the fixed contact 111 and has a space for contacting and separating with the fixed contact 111 for switching.

The lower portion of the movable contact 112 is provided with a contact spring 113 to have an elastic force when the movable contact 112 is in contact with the fixed contact 111. Through the contact spring 113, the movable contact 112 can be maintained in contact with the fixed contact 111 at a predetermined pressure or more. In addition, the contact spring 113 reduces the moving speed of the movable iron core 123 and the shaft 130 when the movable contact 112 is separated from the fixed contact 111, so that the movable core 123 is the plunger cap 125. ), The impact force can be reduced to prevent noise and vibration.

2 is a view showing the opening and closing state of the electronic switchgear according to an embodiment of the present invention. Referring to FIG. 2, (a) of FIG. 2 shows a closed state of the electronic switchgear, and (b) shows an opened state of the electronic switchgear.

According to the structure described above with reference to FIG. 1, when energizing the exciting coil 121, magnetic flux is generated around the exciting coil 121. By the magnetic flux, the fixed core 122 and the movable core 123 become different polarities, and the movable core 123 is attracted to the fixed core 122 so that the movable core 123 and the fixed core 122 contact each other. do. As such, when the movable iron core 123 is in the joining position with the fixed iron core 122, the fixed contact 111 and the movable contact 112 are in contact with each other. When the stationary contact 111 and the movable contact 112 is in contact with each other to supply power to the external device, this state is a closed state of Figure 2 (a).

In addition, when the excitation coil 121 is shorted, the magnetic force generation of the excitation coil 121 is stopped and the driving force of the movable iron core 123 is lost, so that the movable core 123 is initially initialized by the elastic force of the return spring 126. Return to position As the movable iron core 123 is returned to the initial position, the shaft 130 is moved, and the movable contact 112 is separated from the fixed contact 111.

At this time, the return spring 126 is received and installed in the spring receiving groove 201 installed in the fixed iron core 122, the movable core 123 is closed (when moved to the bonded position) of Figure 2 (a) Since the return spring 126 is compressed and the entire return spring 126 is accommodated in the spring receiving groove 201, the return spring 126 does not interfere with the engagement of the fixed core 122 by the movable core 123. Do not. When the movable iron core 123 returns to the initial position, the power supply to the external device is stopped, and this state is the open state of FIG.

The electronic switching device switches the external device by repeatedly performing the closed state of FIG. 2A and the open state of FIG. 2B.

3 is a view showing an airtight space into which the arc extinguishing gas of the electronic switching device according to an embodiment of the present invention is injected.

Referring to FIG. 3, the housing 110, the connecting body 301, the upper plate 302, and the arc-out part 110, the fixed iron core 122, and the movable iron core 123 of the electronic switching device are housed in an airtight space. The plunger cap 125 is installed and hermetically bonded to form an airtight space surrounded by the housing 114, the connecting body 301, and the plunger cap 125.

The housing 114 is formed in a box shape from a heat resistant material such as ceramic or the like. An opening 310 is formed below the housing 114. In addition, two terminal holes 321 and 322 are formed in the upper portion 320 of the housing 114.

The connecting body 301 is formed of a metal material or the like and is hermetically bonded to the opening 310 of the housing 114 to form the opening 330 in the lower part of the connecting body 301, and the connecting body through a joining method such as welding. The opening 330 of the 301 and the upper plate 302 are hermetically bonded.

The housing 114 forms an airtight space 340 for accommodating the fixed contact 111 and the movable contact 112 by the airtight bonding of the connecting body 301 and the top plate 302. The hermetic space 340 is sealed with an insulating gas composed mainly of hydrogen.

Each of the fixed terminals 350 in the airtight space 340 is formed in a cylindrical shape with a conductor such as a copper material, and has a sunshade so as to have a fixed contact at the lower end and an external device at the upper end thereof. The movable contact 360 is formed on a flat plate with a conductor such as a copper-based material and a movable contact is formed on the upper surface. The movable contact is integrally formed with the movable contact 360.

4 is a view showing a sealing contact manufacturing structure (I) according to an embodiment of the present invention.

Referring to FIG. 4, in the sealing structure of the contact, a fixed contact 401 and a moving contact 402 are disposed in a space in which a housing 403 made of a ceramic material, a connecting body 404, and a plate 405 are combined. .

The movable contact 402 is connected to the shaft 410, and the shaft 410 moves through the connector 404 and the plate 405 and passes through a fixed iron core 420 fixed to the lower portion of the plate 405. It is combined with the iron core (430).

The cylinder 440 accommodates the fixed iron core 420 and the moving iron core 430 coupled to the lower portion of the plate 405, and is coupled to and fixed to the plate 405.

As a result, the housing 403, the connecting body 404, the plate 405 and the cylinder 440 are combined to form a sealing structure (combination).

The part of the cylinder 440 of the combination is inserted into the vacuum chamber 400 in a state in which a hole (vent, vent) is formed in a part (which may be effective for welding in the lower case).

In this state, the insulating gas is injected into the vacuum chamber 400 using the gas pump 450. As the insulating gas, hydrogen (H 2 ) gas is mainly used, and a mixed gas of hydrogen (H 2 ) and nitrogen (N 2 ) may be used. The insulating gas may be injected above a predetermined pressure (usually about 2 atmospheres) so as to be easily injected into the space inside the assembly, and may be evacuated before the insulating gas is injected into the chamber 400, and the mixed gas may be injected. When used, the mixed gas may be injected into the chamber 400 or each gas may be sequentially injected to allow the mixed gas to be injected into the chamber 400.

When the insulating gas atmosphere is formed in the chamber 400, the insulating gas is supplied through the supply / exhaust vent of the assembly, and the insulating gas is injected into the space of the assembly.

After a predetermined time such that an insulating gas is injected into the inner space of the assembly, the vent 441 formed by the protruding deformation structure of the cylinder 440 is deformed to be close to the circular shape of the cylinder 440, and the vent 441 part Airtight welding using projection welding or laser welding is performed. In other words, the metal around the vent 441 is melted and the gap is hermetically welded to seal the assembly.

5 is a view showing a sealed contact manufacturing structure (II) according to another preferred embodiment of the present invention.

Referring to FIG. 5, in the sealing structure of the contact, a fixed contact 501 and a moving contact 502 are disposed in a space in which a housing 503 made of a ceramic material, a connecting body 504, and a plate 505 are combined. .

The movable contact 502 is connected to the shaft 510, and the shaft 510 passes through the connecting body 504 and the plate 505 and passes through the fixed iron core 520 fixed to the lower portion of the plate 505. It is coupled with the iron core (530).

The cylinder 540 receives the fixed iron core 520 and the moving iron core 530 coupled to the lower portion of the plate 505, and is coupled to and fixed to the plate 505.

As a result, the housing 503, the connecting body 504, the plate 505, and the cylinder 540 are combined to form a sealing structure (combining body).

It is inserted into the vacuum chamber 500 in a state in which a vent 506 for supply / exhaust is formed in a part of the connecting structure 504 of the sealing structure. The supply and exhaust vent 506 may form a vent 506 on the left and right sides thereof.

In this state, the insulating gas is injected into the vacuum chamber 500 using the gas pump 550. As the insulating gas, hydrogen (H 2 ) gas is mainly used, and a mixed gas of hydrogen (H 2 ) and nitrogen (N 2 ) may be used. The insulating gas may be injected above a predetermined pressure (usually about 2 atmospheres) so as to be easily injected into the space inside the assembly, and may be evacuated before the insulating gas is injected into the chamber 500, and the mixed gas may be injected. When used, the mixed gas may be injected into the chamber 500 or the respective gases may be sequentially injected to allow the mixed gas to be injected into the chamber 500.

When the insulating gas atmosphere is formed in the chamber 500, the insulating gas is supplied through the supply / exhaust vent 506 of the assembly, and the insulating gas is injected into the space of the assembly.

After a certain period of time such that an insulating gas is injected into the inner space of the assembly, a gas tight welding using projection welding or laser welding is performed on the vent 506 formed in the connecting body 504. That is, the metal around the vent 506 is melted and the gap is hermetically welded to seal the assembly.

6 is a view showing a sealed contact manufacturing structure (III) according to another preferred embodiment of the present invention.

Referring to FIG. 6, in the sealing structure of the contact, a fixed contact 601 and a moving contact 602 are disposed in a space in which a housing 603 made of a ceramic material, a connecting body 604, and a plate 605 are combined. .

The movable contact 602 is connected to the shaft 610, and the shaft 610 moves through the connecting iron 620 fixed to the lower portion of the plate 605 by passing through the connector 604 and the plate 605. It is coupled with the iron core (630).

The cylinder 640 receives the fixed iron core 620 and the moving iron core 630 coupled to the bottom of the plate 605, and is coupled to and fixed to the plate 605.

As a result, the housing 603, the connecting body 604, the plate 605 and the cylinder 640 are combined to form a sealing structure (combination).

The vent 606 is formed in a portion of the plate 605 of the sealing structure and is inserted into the vacuum chamber 600. The supply / exhaust vent 606 may form a vent 606 at a lower portion in the cylinder side direction.

In this state, the insulating gas is injected into the vacuum chamber 600 using the gas pump 650. As the insulating gas, hydrogen (H 2 ) gas is mainly used, and a mixed gas of hydrogen (H 2 ) and nitrogen (N 2 ) may be used. The insulating gas may be injected above a predetermined pressure (usually about 2 atmospheres) so as to be easily injected into the space inside the assembly. The insulating gas may be evacuated before the insulating gas is injected into the chamber 600. When used, the mixed gas may be injected into the chamber 600 or each gas may be sequentially injected to allow the mixed gas to be injected into the chamber 600.

When the insulating gas atmosphere is formed in the chamber 600, the insulating gas is supplied through the supply / exhaust vent 606 of the plate 605, and the insulating gas is injected into the space of the assembly.

After a certain period of time such that an insulating gas is injected into the inner space of the assembly, a gas tight welding using projection welding or laser welding is performed on the vent 606 formed in the plate 605. That is, the metal around the vent 606 is melted and the gap is hermetically welded to seal the assembly.

The insulating gas is filled in the airtight space, and the sealing unit is combined with the driving unit including the electric actuator to complete the electronic switching device. The electronic switching device may be used as a DC power converter that performs a function of supplying or blocking a DC current.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be construed to include various embodiments within the scope of the claims.

400 chamber
401 fixed contact
402 Movable Contact
403 housing
404 connector
405 plates
410 shaft
420 fixed core
430 moving core
440 cylinder
441 Ventilation hole (vent)
450 gas pump

Claims (9)

A housing having a sealing structure by combining a housing, a connecting body, and a plate, which form an airtight space in which the fixed contact and the movable contact are disposed, and a cylinder forming a space in which the core for driving the movable contact is arranged; step;
Forming a vent for supply / exhaust of SOHO gas in a portion of the combination;
Placing the vented conjugate in a chamber and forming the chamber in a hydrogen (H 2 ) atmosphere; And
Sealing the assembly by welding a vent formed in the assembly in the chamber. The method of claim 1, wherein forming the conjugate
Sealing contact manufacturing method of coupling the housing, the connecting body and the cylinder to form a sealing structure. The method of claim 1, wherein forming the conjugate
The housing of the ceramic material, the connector of the metal material for fixing the housing, a flat plate to the lower portion of the connecting member and the manufacturing method of the sealing contact to form a sealing structure by coupling the cylinder to the lower portion of the flat plate. The method of claim 1, wherein forming the vent
Sealing contact manufacturing method for forming a vent projecting to the outside in the lower portion of the cylinder. The method of claim 1, wherein forming the vent
Sealing contact manufacturing method for forming a vent projecting to the outside on the left or right side of the connecting body. The method of claim 1, wherein forming the vent
The manufacturing method of the sealing contact which forms the vent which protruded outward to the cylinder side direction of the said plate. The method of claim 1, wherein forming the chamber in a hydrogen atmosphere
A method of manufacturing a sealed contact in which a combination in which a vent is formed in the cylinder is put into the chamber, and hydrogen gas is injected into the chamber in a vacuum state at a predetermined pressure. The method of claim 1 wherein the step of sealing the assembly
And a vent formed in the cylinder in the chamber in the hydrogen atmosphere, and welding the deformed vent. The method of claim 8, wherein the sealing of the assembly
And a method of manufacturing a sealed contact to seal the assembly by projecting welding or laser welding the modified vent.
KR1020100100771A 2010-10-15 2010-10-15 Manufacturing method of sealed contactor KR20120039206A (en)

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KR1020100100771A KR20120039206A (en) 2010-10-15 2010-10-15 Manufacturing method of sealed contactor

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Application Number Priority Date Filing Date Title
KR1020100100771A KR20120039206A (en) 2010-10-15 2010-10-15 Manufacturing method of sealed contactor

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KR20120039206A true KR20120039206A (en) 2012-04-25

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KR1020100100771A KR20120039206A (en) 2010-10-15 2010-10-15 Manufacturing method of sealed contactor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021019810A1 (en) * 2019-07-31 2021-11-18 富士電機機器制御株式会社 Gas sealing method for magnetic contactors and sealing valves used in this method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021019810A1 (en) * 2019-07-31 2021-11-18 富士電機機器制御株式会社 Gas sealing method for magnetic contactors and sealing valves used in this method

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