CN106062913A - Electromagnetic contact apparatus - Google Patents
Electromagnetic contact apparatus Download PDFInfo
- Publication number
- CN106062913A CN106062913A CN201580010449.9A CN201580010449A CN106062913A CN 106062913 A CN106062913 A CN 106062913A CN 201580010449 A CN201580010449 A CN 201580010449A CN 106062913 A CN106062913 A CN 106062913A
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- China
- Prior art keywords
- contact
- contact mechanism
- accommodation space
- movable plunger
- yoke
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
- Electromagnets (AREA)
Abstract
This invention provides an electromagnetic contact apparatus wherein a mobile plunger and a mobile contactor are operated stably during a release operation. This electromagnetic contact apparatus (1) comprises: a contact point mechanism (2) having a pair of fixed contactors (23, 24) and a mobile contactor (25) capable of establishing contact with and separating from the pair of fixed contactors (23, 24); an electromagnet unit (3) for driving the contact point mechanism (2), having a mobile plunger (35) coupled to the mobile contactor (25) through a coupling shaft (37); and a hermetically sealed housing chamber (4) housing the contact point mechanism (2), the coupling shaft (37), and the mobile plunger (35). The housing chamber (4) is constituted in such a manner that a contact point mechanism housing space (A), which houses the contact point mechanism (2), and a mobile plunger housing space (B), which houses the mobile plunger (35), are partitioned by a partitioning member (10), which the coupling shaft (37) is passed through. The partitioning member (10) is provided with a communicating portion (11a) wherethrough the contact point mechanism housing space (A) and the mobile plunger housing space (B) communicate.
Description
Technical field
The present invention relates to carry out the electromagnetic contactor of the opening and closing of current path.
Background technology
As the electromagnetic contactor of the opening and closing carrying out current path, always, the most known knot having described in patent documentation 1
Structure.
Electromagnetic contactor described in patent documentation 1 includes having a pair fixed contact and can be with this pair fixed contact
The contact mechanism of the movable contact being contacting and separating and drive the electromagnet unit of this contact mechanism.Electromagnet unit includes leading to
Cross the movable plunger of connection shaft and the movable contact link of contact mechanism and produce magnet by excitation in electromagnet unit
Drive the magnet exciting coil of movable plunger.
And, contact mechanism is incorporated in the contact mechanism storage shell that the upper surface with yoke engages.Additionally, electromagnet
The movable plunger of unit is configured to be inserted through the movable plunger through hole being formed in yoke in the vertical direction, and receives
It is contained in the cover that the lower surface with yoke engages.Contact mechanism storage shell and cover are formed can via formed in yoke
The sealing container of dynamic plunger through hole connection.Additionally, be provided with reset between the bottom and the bottom of cover of movable plunger
Spring.
And, in sealing container, the contact mechanism accommodation space of storage contact mechanism is movable with storage movable plunger
Plunger accommodation space is inserted through the partition member of connection shaft and separates.
Prior art literature
Patent documentation
Patent documentation 1: No. 2012/157176 publication of International Publication
Summary of the invention
Invent problem to be solved
But, this patent documentation 1 record electromagnetic contactor in, by from the conducting state of contact mechanism to load
In the case of electric current supply blocking, stop the excitation of the magnet exciting coil of electromagnet unit.Thus, movable plunger is due to back-moving spring
Force and rise, the movable contact linked by connection shaft and movable plunger is risen, and becomes movable contact and fixing touches from a pair
The open circuit that head leaves starts state.When becoming open circuit and starting state, at contact portion and the movable contact of a pair fixed contact
Electric arc is produced between contact portion.
Now, due to the heat of produced electric arc, exist from a pair fixed contact and the contact portion of movable contact and around
The situation that insulant produces gas, the internal pressure of the contact mechanism accommodation space sealed in container drastically raises.Herein, by
Separated and only relative to contact mechanism accommodation space by partition member with contact mechanism accommodation space in movable plunger accommodation space
Vertical, thus exist produce between the internal pressure of movable plunger accommodation space and the internal pressure of contact mechanism accommodation space poor,
The action of movable plunger and movable contact becomes unstable situation.Specifically, movable contact is from the high contact of internal pressure
The movable plunger accommodation space side (lower side) that mechanism's accommodation space internally pressure is low is pressed back, although in release way, also
It is to produce movable contact again to contact with a pair fixed contact, interdict failed phenomenon to what the electric current of load-side supplied.
Therefore, the present invention is the invention completed to solve above-mentioned problem, it is intended that divide to utilize possessing
The contact mechanism accommodation space of storage contact mechanism and the side of the movable plunger accommodation space of storage movable plunger is separated every parts
In the electromagnetic contactor of receiving room that formula is constituted, that sealed, it is provided that a kind of movable plunger and can of making when carrying out release movement
The electromagnetic contactor that the having stable behavior ground of moving contact is carried out.
For solving the mode of problem
In order to achieve the above object, the electromagnetic contactor of a mode of the present invention is characterised by, including: there is a pair
Fixed contact and the contact mechanism of movable contact can being contacting and separating with this pair fixed contact；Have by connection shaft with
The movable plunger that above-mentioned movable contact links, the electromagnet unit that drives above-mentioned contact mechanism；With receive above-mentioned contact mechanism,
Above-mentioned connection shaft and above-mentioned movable plunger the receiving room of sealing, above-mentioned receiving room is inserted through the separating part of above-mentioned connection shaft
Part is separated into the contact mechanism accommodation space receiving above-mentioned contact mechanism and the movable plunger storage sky receiving above-mentioned movable plunger
Between, above-mentioned partition member is provided with the connection making above-mentioned contact mechanism accommodation space connect with above-mentioned movable plunger accommodation space
Portion.
Invention effect
According to the electromagnetic contactor of the present invention, it is provided with at partition member and makes contact mechanism accommodation space receive with movable plunger
Receiving the interconnecting part of space connection, therefore, the gas in contact mechanism accommodation space is by interconnecting part and movable plunger accommodation space
Interior gas circulation, even if when carrying out release movement, the internal pressure of contact mechanism accommodation space and movable plunger storage sky
Between internal pressure become uniform pressure also by interconnecting part.Therefore, it is possible to possessing storage to be touched by partition member
It is close that the mode that the contact mechanism accommodation space of some mechanism separates with the movable plunger accommodation space of storage movable plunger is constituted
In the electromagnetic contactor of the receiving room of envelope, it is provided that stably carry out the dynamic of movable plunger and movable contact when carrying out release movement
The electromagnetic contactor made.
Accompanying drawing explanation
Fig. 1 is the sectional view of the electromagnetic contactor of the first embodiment representing the present invention.
Fig. 2 is by receiving room, non-movable piston, spool in the electromagnetic contactor shown in Fig. 1 and the excitation wire being wound in spool
The axonometric chart that circle and bottom yoke are indicated with decomposing.
Fig. 3 is the exploded perspective view of the electromagnetic contactor shown in Fig. 1.
Fig. 4 is the axonometric chart when the insulating cylinder portion of the electromagnetic contactor shown in oblique upper viewing pie graph 1.
Fig. 5 is the axonometric chart when the permanent magnet of the electromagnetic contactor shown in obliquely downward side viewing pie graph 1.
Fig. 6 is the figure of the effect of the electromagnetic contactor of the first embodiment for the present invention is described.
Fig. 7 be represent the variation of the auxiliary yoke used in the electromagnetic contactor shown in Fig. 1, when watching from oblique upper
Axonometric chart.
Fig. 8 be represent the variation of the yoke used in the electromagnetic contactor shown in Fig. 1, standing when watch from oblique upper
Body figure.
Detailed description of the invention
Hereinafter, referring to the drawings embodiments of the present invention are illustrated.
(the first embodiment)
As shown in Figures 1 to 6, electromagnetic contactor 1 includes contact machine to the electromagnetic contactor of first embodiment of the present invention
Structure 2, the electromagnet unit 3 of contact-actuating mechanism 2 and storage contact mechanism 2, connection shaft described later 37 and movable plunger 35
The receiving room 4 sealed.
Contact mechanism 2 is incorporated in the contact mechanism storage shell 5 constituting receiving room 4, and this contact mechanism storage shell 5 includes
The insulated substrate 7 of the flat ceramic of the upper end of metal square tube body 6 and closing the party's cylinder 6.Square tube body 6 is in lower end
It is close with the upper surface of the yoke described later 8 constituting receiving room 4 that portion has the flange part 6a prominent to outside direction, its flange part 6a
Sealing-in is closed.Insulated substrate 7 is formed a pair through hole 7a, 7b with vacating predetermined distance.Upper surface at insulated substrate 7
The lower surface of the surrounding of through hole 7a, 7b and insulated substrate 7, position that square tube body 6 is contacted, be carried out metalized.
Contact mechanism 2 includes by pair of conductors portion 21,22 (hereinafter referred to as first conductor portion the 21, second conductor portion 22)
It is fixed on a pair fixed contact 23,24 (hereinafter referred to as first fixed contact the 23, second fixed contact 24) of insulated substrate 7
With the movable contact 25 that can configure with being contacting and separating with this first fixed contact 23 and the second fixed contact 24.First conductor
Portion 21 is inserted through the through hole 7a of insulated substrate 7 and is fixed, and the second conductor portion 22 is inserted through the through hole of insulated substrate 7
7b and fixed.
Herein, the first fixed contact 23 is the conductive plate in the lateral plan being made up of copper etc. for C font, including along insulation
Upper plate portion 23a that the lower surface of substrate 7 extends laterally, the intermediate plate portion extended downwards from the outboard end of upper plate portion 23a
23b, the lower board unit 23c extended to inner side abreast with upper plate portion 23a from the bottom of intermediate plate portion 23b.Lower board unit 23c bag
Include to the extension of the lower section of movable contact 25, the first contact portion of movable contact 25 and the first contact portion 23d of its upper surface.
On the other hand, the second fixed contact 24 is also in the lateral plan being made up of copper etc. as the first fixed contact 23
For the conductive plate of C font, upper plate portion 24a that extends laterally including the lower surface along insulated substrate 7, from upper plate portion 24a
Intermediate plate portion 24b that side end extends downwards and from the bottom of intermediate plate portion 24b with upper plate portion 24a abreast to inner side
The lower board unit 24c extended.Lower board unit 24c includes extending to the lower section of movable contact 25, the second contact portion of movable contact 25 with
Second contact portion 24d of its upper surface.
First fixed contact 23 and the second fixed contact 24 are fixed on the first conductor portion 21 and the second conductor portion 22 respectively,
As its fixing means, it is possible to enumerate brazing, be screwed.
Additionally, with the medial surface of the intermediate plate portion 23b that covers the first fixed contact 23 and the centre of the second fixed contact 24
The mode of the medial surface of plate portion 24b is the magnetic plate 28 of C font when being provided with in terms of plane.Thereby, it is possible to shielding by
Between the magnetic field that produces of the electric current of plate portion 23b, 24b flowing.
Further, the plastic insulating boot 26 of the generation limiting electric arc is installed at the first fixed contact 23,
Second fixed contact 24 is also provided with the plastic insulating boot 27 of the generation limiting electric arc.Thus, fixing tactile first
The inner peripheral surface of 23 only exposes the first contact portion 23d of the upper surface side of lower board unit 23c.Additionally, at the second fixed contact 24
Inner peripheral surface only exposes the second contact portion 24d of the upper surface side of lower board unit 24c.
And, movable contact 25 is the conductive plate long on the left and right directions of Fig. 1 with copper etc. as material, with solid first
The mode being configured with two ends in determining contact 23 and the second fixed contact 24 configures.This movable contact 25 is by being fixed in electromagnetism
The connection shaft 37 of the movable plunger described later 35 of body unit 3 supports.Central part at movable contact 25 is formed inserts connection shaft
The through hole of 37.
In the above-below direction substantially central portion of connection shaft 37, it is protrudedly formed flange part 37a to outside direction.Movable tactile
Its through hole is inserted from the top of connection shaft 37 and is positioned in flange part 37a by 25.And, insert from the top of connection shaft 37
Logical contact spring 39, is inserted through connection shaft 37 by fixed component 38 from the top of connection shaft 37, to be obtained by contact spring 39
The mode of the force of regulation utilizes fixed component 38 to be stopped the upper end of contact spring 39.
This movable contact 25 becomes first contact portion at two ends in the released state and the second contact portion is solid with first respectively
Second contact portion 24d of the first contact portion 23d and the second fixed contact 24 of determining contact 23 separates with keeping predetermined distance respectively
State.Additionally, movable contact 25 puts into the position the first contact portion with two ends with the second contact portion respectively by contacting bullet
The contact pressure of regulation that spring 39 produces and the first contact portion 23d of the first fixed contact 23 and the second of the second fixed contact 24
The mode that contact portion 24d contacts respectively sets.
Additionally, the inner peripheral surface of the square tube body 6 at contact mechanism storage shell 5, it is configured with as shown in Figure 1 in there being end square tube
The insulating cylinder portion 14 that shape is formed.As shown in Figure 1 and Figure 4, this insulating cylinder portion 14 is included in central part and has inserting of connection shaft 37
Two end edge portions with the flat part 14a of hole 14e, from the direction that the movable contact 25 of flat part 14a extends extend downwards one
A pair bottom wall part 14c to lower section extension portion 14b, extending to outside direction from the lower end of each lower section extension portion 14b and with bag
Enclose flat part 14a, the mode of the surrounding of extension portion 14b and a pair bottom wall part 14c extends upward below a pair surrounding wall portion
14d.Insulating cylinder portion 14 is formed by being shaped the such as synthetic resin of insulating properties.This insulating cylinder portion 14 has blocking electricity
The arc insulation function on the impact of metal square tube body 6.
As it is shown in figure 1, this insulating cylinder portion 14 is arranged in contact mechanism storage shell 5 as follows, it may be assumed that connection shaft 37 leads to
Cross and be formed at the slotting universal hole 14e of flat part 14a and insert in the vertical direction, cover partition member 10 described later in this condition
Top and outside covering, and cover the outside of contact mechanism 2.Specifically, insulating cylinder portion 14 is covered structure by flat part 14a
The anti-foreign body becoming partition member 10 enters the upside of parts 13, by extension portion 14b below a pair cover anti-foreign body enter parts 13,
Auxiliary yoke 12 and the outside of permanent magnet 11, and the outside of contact mechanism 2 is covered by surrounding wall portion 14d.
Additionally, as shown in Figure 1 to Figure 3, electromagnet unit 3 has bottom yoke 31 for U-shaped from the side, under this
The central part of the base plate of portion's yoke 31 is configured with non-movable piston 32.And, it is configured with spool 33 in the outside of non-movable piston 32.
As it is shown in figure 1, spool 33 includes the central cylinder portion 33a supplying non-movable piston 32 to insert, from central authorities' cylindrical portion 33a
Bottom to radial direction lower flange portion 33b protruding outside, from the upper end of central authorities' cylindrical portion 33a to radial direction lateral process
The upper flange part 33c gone out.And, as shown in Figure 1 to Figure 3, by spool 33 central cylinder portion 33a, lower flange portion 33b and on
The accommodation space winding that flange part 33c is constituted is provided with magnet exciting coil 34.
Additionally, in the upper end becoming open end of bottom yoke 31, be fixed with the yoke 8 of tabular.Central authorities in this yoke 8
Portion is formed with movable plunger through hole 8a.
Additionally, the top of the non-movable piston 32 in the central cylinder portion 33a being arranged in spool 33, it is configured with in there being end cylinder
The cover 9 that shape is formed, be arranged on this cover 9 open end, to radial direction flange part 9a protruding outside and yoke 8
Lower surface sealing engagement.Thus, formed by the movable plunger through hole 8a of yoke 8 and contact mechanism storage shell 5 and cap
Part 9 connection, the container (receiving room 4) of sealing.
And, in the inside of this cover 9, it is configured with the movable plunger 35 of back-moving spring 36 at above-below direction at foot
On be contained movably.Movable plunger 35 is included in the circle that the inside of cover 9 is contained the most movably
Cylinder portion and be arranged on this cylindrical portion upper end, to radial direction periphery lobe 35a protruding outside.The circle of movable plunger 35
The movable plunger through hole 8a of yoke 8 is inserted by cylinder portion in the vertical direction, and periphery lobe 35a of movable plunger 35 has ratio
The external diameter that movable plunger through hole 8a is big, is arranged in the top of yoke 8.
Additionally, at the upper surface of yoke 8, as shown in figures 1 and 3, profile be square, there is the central opening of circle
And the permanent magnet 11 being formed as annular is fixed in the way of surrounding periphery lobe 35a of movable plunger 35.Permanent magnet 11 with
Being magnetized for the mode of S pole such as N pole, lower end side as a example by upper end side on above-below direction i.e. thickness direction.
And, at the upper surface of permanent magnet 11, it is fixed with profile same with permanent magnet 11, there is the week than movable plunger 35
The auxiliary yoke 12 of the through hole 12a of the internal diameter that edge lobe 35a is little.Connection shaft 37 is inserted in the vertical direction in through hole 12a
Logical.
Further, at the upper surface of auxiliary yoke 12, it is fixed with the anti-foreign body entrance parts 13 having resilient tabular.This is prevented
It is the profile in the same size with auxiliary yoke 12 that foreign body enters parts 13, has through hole 13a at central part, this through hole
13a inserts connection shaft 37 in the vertical direction and has the internal diameter that the outer peripheral face with connection shaft 37 contacts.Anti-foreign body inlet portion
Part 13 for example, rubber system.This anti-foreign body enters parts 13 and has following function, it may be assumed that when touching at the first of the first fixed contact 23
The foreign bodies such as the melt produced near the second contact portion 24d of some portion 23d and the second fixed contact 24 and dust pass through insulating cylinder
When the slotting universal hole 14e in portion 14 falls lower section, this foreign body is stoped to enter movable plunger 35 side.Additionally, this anti-foreign body inlet portion
Part 13 has elasticity, has and is pointed to the function that the insulating cylinder portion 14 of the upside that anti-foreign body enters parts 13 exerts a force upward.
And, as depicted in figs. 1 and 2, yoke 8, contact mechanism storage shell 5 and cover 9 constitute storage contact mechanism
2, the receiving room 4 of the sealing of connection shaft 37 and movable plunger 35, wherein, this yoke 8 is tabular, has in the vertical direction for can
The movable plunger through hole 8a that dynamic plunger 35 is inserted, this contact mechanism storage shell 5 engages with the upper surface of yoke 8, receives in inside
Receiving contact mechanism 2, this cover 9 engages with the lower surface of yoke 8, receives movable plunger 35 in inside.At the receiving room 4 sealed
In, it is enclosed the mixed gas of hydrogen, nitrogen, hydrogen and nitrogen, air, SF6Deng gas.
And, as it is shown in figure 1, this receiving room 4 will storage contact machine with the partition member 10 passing through to insert connection shaft 37
The mode that the contact mechanism accommodation space A of the structure 2 and movable plunger accommodation space B receiving movable plunger 35 separates is constituted.
And, it is provided with at this partition member 10 and makes contact mechanism accommodation space A and movable plunger accommodation space B connect
Interconnecting part 11a.
This partition member 10 and interconnecting part 11a are described in detail.
First, as shown in figures 1 and 3, partition member 10 is by yoke 8, above-mentioned permanent magnet 11, the auxiliary of above-mentioned tabular
The anti-foreign body of yoke 12 and tabular enters parts 13 and constitutes, and wherein, this permanent magnet 11 is fixed on the upper surface of yoke 8, can with encirclement
The mode of periphery lobe 35a of dynamic plunger 35 is formed, and auxiliary yoke 12 is fixed on the upper surface of permanent magnet 11, in the vertical direction
Inserting connection shaft 37, anti-foreign body enters parts 13 and is fixed on the upper surface of auxiliary yoke 12, inserts connection shaft 37 in the vertical direction,
And contact with the outer peripheral face of connection shaft 37, there is elasticity.And, in the inside of receiving room 4, by partition member 10, will be
The contact mechanism accommodation space A that the top of partition member 10 and outside are formed and the movable post formed in the inner side of partition member 10
Plug accommodation space B separates.
And, in the inside of contact mechanism storage shell 5, it is configured with insulating cylinder portion 14 as described above.As it is shown in figure 1,
This insulating cylinder portion 14 is arranged in contact mechanism accommodation space A as follows, it may be assumed that connection shaft 37 is by being formed at flat part
The slotting universal hole 14e of 14a inserts in the vertical direction, covers with extension portion 14b below flat part 14a and a pair in this condition
Outside the top of partition member 10 and covering, and cover the outside of contact mechanism 2 with surrounding wall portion 14d.And, at this insulating cylinder
The upper end of surrounding wall portion 14d in portion 14, as shown in Figure 1 and Figure 4, is formed and makes the contact mechanism of contact mechanism 2 side receive
The cylinder portion interconnecting part 14f that space A connects with the contact mechanism accommodation space A of partition member 10 side.Therefore, contact mechanism storage
The contact mechanism accommodation space A of contact mechanism 2 side clipping insulating cylinder portion 14 in the A of space touches with partition member 10 side
Point mechanism accommodation space A is connected by cylinder portion interconnecting part 14f, the contact mechanism accommodation space A of contact mechanism 2 side and separating part
Internal pressure in the contact mechanism accommodation space A of part 10 side becomes uniform.
And, constituting the lower surface of permanent magnet 11 of partition member 10, as shown in Figure 1 and Figure 5, be formed so that
The interconnecting part 11a that the groove that the contact mechanism accommodation space A and movable plunger accommodation space B of partition member 10 side connects is constituted.
As shown in Figure 1 and Figure 4, permanent magnet 11 lower surface formed interconnecting part 11a permanent magnet 11 movable contact 25 extend
The lower surface at the both ends in direction is formed with multiple (in the first embodiment, being respectively 2 in each end, 4 altogether).Such as figure
Shown in 5, each interconnecting part 11a is at the lower surface of each end in the direction of movable contact 25 extension of permanent magnet 11, by from external end edge
Inboard end edge, portion continuous print groove is formed.
Herein, as it is shown in figure 1, make touching of partition member 10 side at the interconnecting part 11a of the lower surface formation of permanent magnet 11
Point mechanism accommodation space A connects with movable plunger accommodation space B.Thus, the contact mechanism accommodation space A of contact mechanism 2 side
With the internal pressure of contact mechanism accommodation space A of partition member 10 side and the internal pressure in movable plunger accommodation space B
Become identical.
It addition, insulating cylinder portion 14 is not necessarily arranged, in the case of being not provided with insulating cylinder portion 14, permanent magnet 11 times
The interconnecting part 11a that surface is formed makes do not have the contact mechanism accommodation space A and movable plunger accommodation space B in insulating cylinder portion 14 even
Logical.
Then, the action to the electromagnetic contactor 1 of the first embodiment illustrates.
Now, the first conductor portion 21 being connected with the first fixed contact 23 and the power supply source such as supplying big electric current connect
Connecing, the second conductor portion 22 being connected with the second fixed contact 24 is connected with load device.
In this condition, the magnet exciting coil 34 of electromagnet unit 3 is in non-excited state, is in unfavorable electromagnet unit
3 release conditions producing the captivation making movable plunger 35 decline.
Under these release conditions, movable plunger 35 is reset spring 36 to the upper direction force left from yoke 8.Same with this
Time, the captivation that the magnetic force of permanent magnet 11 produces acts on auxiliary yoke 12, attracts periphery lobe 35a of movable plunger 35.Cause
This, the upper surface of periphery lobe 35a of movable plunger 35 contacts with the lower surface of auxiliary yoke 12.
Therefore, the first contact portion of the movable contact 25 of the contact mechanism 2 linked with movable plunger 35 by connection shaft 37
With the second contact portion relative to the first contact portion 23d of the first fixed contact 23, the second contact portion 24d of the second fixed contact 24
Leave predetermined distance upward.Therefore, the current path between the first fixed contact 23 and the second fixed contact 24 is in blocking
State, contact mechanism 2 becomes off state.
Under these release conditions, contact mechanism accommodation space A is connected by interconnecting part 11a with movable plunger accommodation space B,
Gas in contact mechanism accommodation space A and the gas circulation in movable plunger accommodation space B, contact mechanism accommodation space A's
The internal pressure of internal pressure and movable plunger accommodation space B becomes identical.
When the magnet exciting coil 34 from these release conditions, to electromagnet unit 3 is energized, produces in this electromagnet unit 3 and inhale
Gravitation, the opposing force of back-moving spring 36 and the captivation of permanent magnet 11 and movable plunger 35 is pressed downwards.This movable post
The lower surface descending through periphery lobe 35a of plug 35 is encountered the upper surface of yoke 8 and is stopped.
So, owing to movable plunger 35 declines, the movable contact 25 linked by connection shaft 37 and movable plunger 35 also under
Fall, the first contact portion of the movable contact 25 of contact mechanism 2 and the second contact portion due to contact spring 39 contact pressure and with
First contact portion 23d of the first fixed contact 23 and the second contact portion 24d of the second fixed contact 24 contact respectively.
Therefore, the big electric current in power supply source is become by the first fixed contact 23, movable contact the 25, second fixed contact
24 conducting states being supplied to load device.
Under the conducting state of this contact mechanism 2, contact mechanism accommodation space A and movable plunger accommodation space B also by
Interconnecting part 11a connects, and the internal pressure of contact mechanism accommodation space A and the internal pressure of movable plunger accommodation space B become phase
With.
And, from the conducting state of contact mechanism 2, by feed to load device electric current supply blocking in the case of, will
Energising to the magnet exciting coil 34 of electromagnet unit 3 stops.
When by when the energising of magnet exciting coil 34 is stopped, electromagnet unit 3 is utilized to make movable plunger 35 move downwards
Captivation disappears, and thus, movable plunger 35 rises due to the force of back-moving spring 36, and periphery lobe 35a is near auxiliary yoke
12, the captivation of permanent magnet 11 increases therewith.
Owing to this movable plunger 35 rises, the movable contact 25 linked by connection shaft 37 is risen.Corresponding, in profit
When applying contact pressure with contact spring 39, the first contact portion of movable contact 25 and the second contact portion and the first fixed contact 23
The first contact portion 23d and the second contact portion 24d of the second fixed contact 24 contact respectively.Afterwards, connecing at contact spring 39
In the moment that touch pressure disappears, become movable contact 25 from breaking that the first fixed contact 23 and the second fixed contact 24 leave upward
Road starts state.
State is started when becoming such open circuit, solid with first in the first contact portion and second contact portion of movable contact 25
Determine to produce between the first contact portion 23d of contact 23 and the second contact portion 24d of the second fixed contact 24 electric arc, due to electric arc,
The "on" position of electric current exists.
Now, due to the heat of produced electric arc, fix from first contact portion 23d and second of the first fixed contact 23 and touch
Second contact portion 24d of 24 and insulant about produce gas, the internal pressure of contact mechanism accommodation space A relative to
The internal pressure of movable plunger accommodation space B to uprise.But, due to contact mechanism accommodation space A and movable plunger storage sky
Between B connected by interconnecting part 11a, so the inside of the internal pressure of contact mechanism accommodation space A and movable plunger accommodation space B
Pressure is identical, will not unilaterally raise.
That is, the contact mechanism storage sky of contact mechanism 2 side clipping insulating cylinder portion 14 in contact mechanism accommodation space A
Between A connected by cylinder portion interconnecting part 14f with the contact mechanism accommodation space A of partition member 10 side, contact mechanism 2 side touch
Mechanism accommodation space A is identical with the internal pressure in the contact mechanism accommodation space A of partition member 10 side for point.And, connection
Portion 11a makes the contact mechanism accommodation space A of partition member 10 side connect with movable plunger accommodation space B.Therefore, contact mechanism
The contact mechanism accommodation space A of 2 sides, the contact mechanism accommodation space A and movable plunger accommodation space B of partition member 10 side
Internal pressure identical.I.e., as shown in Figure 6, the gas in the contact mechanism accommodation space A of contact mechanism 2 side is as with accompanying drawing
As labelling R represents, pass through in the contact mechanism accommodation space A of partition member 10 side, flow to movably through interconnecting part 11a
In plunger accommodation space B.Thus, the contact mechanism accommodation space A of contact mechanism 2 side, the contact machine of partition member 10 side
The internal pressure of structure accommodation space A and movable plunger accommodation space B becomes identical.
Therefore, when carrying out release movement, movable contact 25 will not be to movable plunger accommodation space B side (lower side) quilt
Press back, it is possible to stably carry out movable plunger 35 and the action of movable contact 25.
It addition, as shown in Figure 6, in first contact portion 23d and the second of the second fixed contact 24 of the first fixed contact 23
Near contact portion 24d, the produced foreign body D such as melt and dust can fall in insulating cylinder portion 14, does not enter movable plunger storage
In space B.In the case of this foreign body D falls lower section by the slotting universal hole 14e in insulating cylinder portion 14, by anti-foreign body inlet portion
Part 13 stops foreign body D to enter in movable plunger accommodation space B.Additionally, this foreign body D is hardly from being formed at insulating cylinder portion 14
The cylinder portion interconnecting part 14f of the upper end of surrounding wall portion 14d enters in the contact mechanism accommodation space A of partition member 10 side, even if
In the case of entrance, also due to the contact mechanism accommodation space A of partition member 10 side is narrow path, so this foreign body D
Substantially without the interconnecting part 11a arriving the lower surface being formed at permanent magnet 11.Therefore, there is not this foreign body D by interconnecting part 11a
Enter the problem in movable plunger accommodation space B.
And, in the first contact portion of the first contact portion of movable contact 25 and the second contact portion with the first fixed contact 23
The electric arc produced between second contact portion 24d of 23d and the second fixed contact 24 is by electric from these according to Fleming lefft-hand rule
The flowing of the electric current of arc and the magnetic flux produced at not shown electric arc extinguishing arc permanent magnet and the Lorentz force that produces of relation
Stretch and extinguishing arc.
And, at the end of the release movement of movable plunger 35, the upper surface of periphery lobe 35a of movable plunger 35 with
The lower surface contact of auxiliary yoke 12, open circuit terminates.
Then, with reference to Fig. 7, the variation assisting yoke 12 used in the electromagnetic contactor 1 shown in Fig. 1 is illustrated.
At the electromagnetic contactor 1 shown in Fig. 1, interconnecting part 11a is the two of the direction of movable contact 25 extension of permanent magnet 11
The lower surface of end is formed with multiple (respectively form 2 in each end, amount to 4), is formed without interconnecting part at auxiliary yoke 12.At figure
Auxiliary yoke 12 shown in 7 is different from the auxiliary yoke 12 shown in Fig. 1, the two ends in the direction that the movable contact 25 at auxiliary yoke 12 extends
Portion is formed with multiple (respectively form 2 in each end, amount to 4) interconnecting part 12b.Each interconnecting part 12b by from auxiliary yoke 12 can
Two edges, outer end in the direction that moving contact 25 extends form breach towards inner side and are formed.And, each interconnecting part 12b makes separating part
The contact mechanism accommodation space A of part 10 side connects with movable plunger accommodation space B.It addition, using the auxiliary shown in this Fig. 7
In the case of yoke 12, it is also possible to as shown in Figure 1, form interconnecting part 11a at permanent magnet 11.
Additionally, the variation with reference to the Fig. 8 yoke 8 to using in the electromagnetic contactor 1 shown in Fig. 1 illustrates.
At the electromagnetic contactor 1 shown in Fig. 1, interconnecting part 11a is the two of the direction of movable contact 25 extension of permanent magnet 11
The lower surface of end is formed with multiple (respectively form 2 in each end, amount to 4), is formed without interconnecting part in yoke 8.In Fig. 8 institute
The yoke 8 shown, different from the yoke 8 shown in Fig. 1, yoke 8 movable plunger through hole 8a movable contact 25 extend side
To both sides be formed with multiple (respectively formed in each side 2, amount to 4) 8b.Each interconnecting part 8b is passed through by the movable plunger from yoke 8
The groove with the end that the edge, both sides in the direction that the movable contact 25 of through hole 8a extends extends laterally is formed.And, each interconnecting part
8b makes the contact mechanism accommodation space A of partition member 10 side connect with movable plunger accommodation space B.It addition, using this Fig. 8
In the case of shown yoke 8, it is also possible to as shown in Figure 1, form interconnecting part 11a at permanent magnet 11 or use Fig. 7 institute
The auxiliary yoke 12 shown.
(summary)
As it has been described above, the electromagnetic contactor 1 at the first embodiment includes: have a pair fixed contact 23,24 and energy
The contact mechanism 2 of enough movable contacts 25 being contacting and separating with a pair fixed contact 23,24；Have by connection shaft 37 with movable
Movable plunger 35, contact-actuating mechanism 2 electromagnet unit 3 that contact 25 links；With storage contact mechanism 2, connection shaft 37
The receiving room 4 of the sealing with movable plunger 35.And, receiving room 4 is inserted through the partition member 10 of connection shaft 37 and is separated into receipts
Receive contact mechanism 2 contact mechanism accommodation space A with storage movable plunger 35 movable plunger accommodation space B.And, separating part
Be provided with on part 10 make contact mechanism accommodation space A connect with movable plunger accommodation space B interconnecting part 11a, 12b, 8b, 15.
Make contact mechanism accommodation space A and movable plunger accommodation space B even accordingly, because be provided with on partition member 10
Logical interconnecting part 11a, 12b, 8b, 15, even if so when carrying out release movement, by interconnecting part 11a, 12b, 8b, 15, contact
The internal pressure of mechanism accommodation space A also becomes identical with the internal pressure of movable plunger accommodation space B.Therefore, possess with
By partition member 10, the movable plunger of the contact mechanism accommodation space A of storage contact mechanism 2 with storage movable plunger 35 is received
In electromagnetic contactor 1 that the mode that space B of receiving separates is constituted, receiving room 4 that seal, using the teaching of the invention it is possible to provide carrying out release movement
Time make the electromagnetic contactor 1 that carries out of having stable behavior ground of movable plunger 35 and movable contact 25.
Additionally, in the electromagnetic contactor 1 of the first embodiment, receiving room 4 is by the yoke 8 of tabular, contact mechanism storage
Shell 5 and cover 9 are constituted, and wherein, this yoke 8 constitutes electromagnet unit 3, has and inserts movable plunger 35 in the vertical direction
Movable plunger through hole 8a, this contact mechanism storage shell 5 engages with the upper surface of yoke 8, receives contact mechanism 2 in inside, should
Cover 9 engages with the lower surface of yoke 8, receives movable plunger 35 in inside.
Thereby, it is possible to use constituted electromagnet unit 3 yoke 8, simple structure constituted receiving room 4.
Additionally, at the electromagnetic contactor 1 of the first embodiment, partition member 10 by yoke 8, permanent magnet 11, tabular auxiliary
The anti-foreign body helping yoke 12 and tabular enters parts 13 and constitutes, and the contact mechanism of the top and outside that will be formed in partition member 10 is received
The movable plunger accommodation space B of the inner side receiving space A and be formed at partition member 10 separates, and wherein, this permanent magnet 11 is fixed
At the upper surface of yoke 8, constitute electromagnet unit 3 and formed in the way of surrounding periphery lobe 35a of movable plunger 35, should
Auxiliary yoke 12 is fixed on the upper surface of permanent magnet 11, constitutes electromagnet unit 3 and inserts at above-below direction for connection shaft 37, and this is prevented
Foreign body enter parts 13 be fixed on auxiliary yoke 12 upper surface, insert at above-below direction for connection shaft 37, with connection shaft 37 outside
Circumferential contact and there is elasticity.
Thereby, it is possible to use constitute the permanent magnet 11 of electromagnet unit 3 and auxiliary yoke 12 and anti-foreign body enter parts 13, with
Simple structure constitutes partition member 10, and anti-foreign body entrance parts 13 can be utilized to stop the contact at a pair fixed contact
The foreign bodies such as the melt produced near portion and dust enter in movable plunger accommodation space B from contact mechanism accommodation space A.
Further, in the electromagnetic contactor 1 of the first embodiment, contact mechanism storage shell 5 be internally provided with shape
Become the insulating cylinder portion 14 having bottom tube-like, described insulating cylinder portion 14 with insert connection shaft 37 in the vertical direction state under cover
The mode in the outside of the top of lid partition member 10 and outside and contact mechanism 2 is provided with and is arranged in contact mechanism accommodation space A
In.Utilize this insulating cylinder portion 14, in the case of contact mechanism storage shell 5 is metal, it is possible to blocking electric arc is to this metal system
Contact mechanism storage shell 5 impact.
And, at the electromagnetic contactor 1 of the first embodiment, it is formed in insulating cylinder portion 14 and makes contact mechanism 2 side
The cylinder portion interconnecting part 14f that contact mechanism accommodation space A connects with the contact mechanism accommodation space A of partition member 10 side.Thus,
The contact mechanism accommodation space A of contact mechanism 2 side clipping insulating cylinder portion 14 in contact mechanism accommodation space A and separating part
The contact mechanism accommodation space A of part 10 side is connected by cylinder portion interconnecting part 14f, it is possible to make the contact machine of contact mechanism 2 side
Internal pressure in the contact mechanism accommodation space A of structure accommodation space A and partition member 10 side is uniform.
Additionally, in the electromagnetic contactor 1 of the first embodiment, interconnecting part 11a constitutes partition member 10 by being formed at
Permanent magnet 11, make the groove that the contact mechanism accommodation space A and movable plunger accommodation space B of partition member 10 side connect be formed,
Interconnecting part 12b is by being formed at auxiliary yoke 12, the contact mechanism accommodation space A making partition member 10 side and movable plunger storage sky
Between the breach of B connection is formed, interconnecting part 8b is by making the contact mechanism accommodation space A of partition member 10 side receive with movable plunger
Groove that space B connects, that be formed at yoke 8 is formed.
Therefore, there is no need to enter parts 13 at the anti-foreign body constituting partition member 10 and form interconnecting part.Enter at anti-foreign body
In the case of parts 13 are formed with interconnecting part, there are the melt produced near the contact portion of a pair fixed contact and dust etc.
Foreign body enters the problem in movable plunger accommodation space B from contact mechanism accommodation space A.
Above, being illustrated first embodiment of the present invention, the present invention is not limited to this, it is possible to carry out various
Change, improvement.
Such as, as long as receiving room 4 is can to receive to have a pair fixed contact 23,24 and the contact mechanism of movable contact 25
2, connection shaft 37 and the closed structure of movable plunger 35, just might not be by yoke 8, contact mechanism storage shell 5, cover 9 structure
Become.
If additionally, partition member 10 contact mechanism accommodation space A in spaced-apart manner and movable plunger accommodation space B structure
Become receiving room 4, just might not be entered parts 13 by permanent magnet 11, auxiliary yoke 12 and anti-foreign body and constitute.
Additionally, insulating cylinder portion 14 can also be not provided with.
Further, interconnecting part is separating in the way of making contact mechanism accommodation space A connect with movable plunger accommodation space B
Parts 10 are formed, in the case of being constituted partition member 10 by permanent magnet 11, auxiliary yoke 12, anti-foreign body entrance parts 13,
It forms place is permanent magnet 11, auxiliary yoke 12, arbitrary place of anti-foreign body entrance parts 13.Additionally, interconnecting part can also
Enter the parts of combination in any in parts 13 formed at permanent magnet 11, auxiliary yoke 12, anti-foreign body.
Additionally, interconnecting part makes contact mechanism accommodation space A connect with movable plunger accommodation space B, it is also possible to for Fig. 1
To the interconnecting part 11a shown in Fig. 6 be made up of the hole beyond groove or breach, the interconnecting part 12b shown in Fig. 7 by the groove beyond breach or
The structure that interconnecting part 8b shown in hole composition, Fig. 8 is made up of the breach beyond groove or hole.
Additionally, the quantity of interconnecting part is arbitrary quantity, it is not as shown in interconnecting part 11a, the Fig. 7 shown in Fig. 1 to Fig. 6
Interconnecting part 8b shown in interconnecting part 12b, Fig. 8 is defined in 4.
The explanation of reference
1 electromagnetic contactor
2 contact mechanisms
3 electromagnet unit
4 receiving rooms
8 yokes
8a movable plunger through hole
9 covers
10 partition members
11 permanent magnets
11a, 12b, 8b interconnecting part
12 auxiliary yokes
13 anti-foreign bodies enter parts
14 insulating cylinder portions
14f cylinder portion interconnecting part
23 first fixed contacts (fixed contact)
24 second fixed contacts (fixed contact)
25 movable contacts
35 movable plunger
35a periphery lobe
37 connection shafts
A contact mechanism accommodation space
B movable plunger accommodation space.
Claims (4)
1. an electromagnetic contactor, it is characterised in that including:
There is a pair fixed contact and the contact mechanism of movable contact can being contacting and separating with this pair fixed contact；
Electromagnet list that there is the movable plunger by connection shaft and the link of described movable contact, that drive described contact mechanism
Unit；With
Receive the receiving room of the sealing of described contact mechanism, described connection shaft and described movable plunger,
Described receiving room is inserted through the partition member of described connection shaft and is separated into the contact mechanism receipts receiving described contact mechanism
The movable plunger accommodation space receiving space and receive described movable plunger,
The company making described contact mechanism accommodation space connect it is provided with described movable plunger accommodation space on described partition member
Logical portion.
2. electromagnetic contactor as claimed in claim 1, it is characterised in that:
Described receiving room is made up of the yoke of tabular, contact mechanism storage shell and cover, and wherein, described yoke constitutes described electricity
Magnet unit, has the movable plunger through hole inserted in the vertical direction for described movable plunger, and described contact mechanism is received
Shell engages with the upper surface of this yoke, receives described contact mechanism in inside, and described cover connects with the lower surface of described yoke
Close, receive described movable plunger in inside,
Described partition member is entered parts by the anti-foreign body of described yoke, permanent magnet, the auxiliary yoke of tabular and tabular and constitutes, by shape
Become described contact mechanism accommodation space and the inner side being formed at described partition member with outside above described partition member
Described movable plunger accommodation space separate, wherein, described permanent magnet is fixed on the upper surface of described yoke, constitutes described electricity
Magnet unit and by surround described movable plunger periphery lobe in the way of formed, described auxiliary yoke is fixed on this permanent magnet
Upper surface, constitutes described electromagnet unit and inserts in the vertical direction for described connection shaft, and it is solid that described anti-foreign body enters parts
It is scheduled on the upper surface of described auxiliary yoke, inserts in the vertical direction for described connection shaft, contact with the outer peripheral face of described connection shaft
And there is elasticity.
3. electromagnetic contactor as claimed in claim 2, it is characterised in that:
Be formed as having the insulating cylinder portion of bottom tube-like being internally provided with of described contact mechanism storage shell, described insulating cylinder portion with
Top and outside and the described contact mechanism of described partition member is covered under the state inserting described connection shaft on above-below direction
The mode in outside be arranged in described contact mechanism accommodation space, this insulating cylinder portion is formed and makes described contact mechanism side
The cylinder portion interconnecting part that connects with the contact mechanism accommodation space of described partition member side of contact mechanism accommodation space.
4. electromagnetic contactor as claimed in claim 3, it is characterised in that:
Described interconnecting part is constituted by being formed in the described permanent magnet of described partition member, described auxiliary yoke or described yoke
, groove, hole or the breach that the contact mechanism accommodation space making described partition member side connects with described movable plunger accommodation space
Constitute.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-184454 | 2014-09-10 | ||
| JP2014184454 | 2014-09-10 | ||
| PCT/JP2015/003171 WO2016038769A1 (en) | 2014-09-10 | 2015-06-24 | Electromagnetic contact apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106062913A true CN106062913A (en) | 2016-10-26 |
| CN106062913B CN106062913B (en) | 2017-12-15 |
Family
ID=55458549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580010449.9A Active CN106062913B (en) | 2014-09-10 | 2015-06-24 | Electromagnetic contactor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6237916B2 (en) |
| CN (1) | CN106062913B (en) |
| WO (1) | WO2016038769A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110651351A (en) * | 2017-08-10 | 2020-01-03 | 欧姆龙株式会社 | Electromagnetic relay |
| CN110678949A (en) * | 2017-04-06 | 2020-01-10 | 沙尔特宝有限公司 | Switching device with contact cover |
| CN115280455A (en) * | 2020-03-11 | 2022-11-01 | 株式会社电装 | Electromagnetic relay |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7095487B2 (en) * | 2018-08-24 | 2022-07-05 | オムロン株式会社 | Electromagnetic relay |
| JP7294111B2 (en) * | 2019-12-18 | 2023-06-20 | 富士電機機器制御株式会社 | magnetic contactor |
| JP7363565B2 (en) * | 2020-02-21 | 2023-10-18 | 富士電機機器制御株式会社 | electromagnetic contactor |
| JP7414024B2 (en) * | 2021-01-21 | 2024-01-16 | 富士電機機器制御株式会社 | electromagnetic contactor |
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| JP2014063674A (en) * | 2012-09-21 | 2014-04-10 | Fujitsu Component Ltd | Electromagnetic relay |
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- 2015-06-24 CN CN201580010449.9A patent/CN106062913B/en active Active
- 2015-06-24 WO PCT/JP2015/003171 patent/WO2016038769A1/en active Application Filing
- 2015-06-24 JP JP2016547659A patent/JP6237916B2/en active Active
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| JPH03105060A (en) * | 1989-09-19 | 1991-05-01 | Nippondenso Co Ltd | Starter |
| US5420555A (en) * | 1992-06-25 | 1995-05-30 | Matsushita Electric Works, Ltd. | Plural sealed contact units with common electromagnetic operating mechanism |
| CN103069531A (en) * | 2010-12-02 | 2013-04-24 | 富士电机株式会社 | Electromagnetic contactor, gas sealing method for electromagnetic contactor, and method for manufacturing electromagnetic contactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110678949A (en) * | 2017-04-06 | 2020-01-10 | 沙尔特宝有限公司 | Switching device with contact cover |
| CN110678949B (en) * | 2017-04-06 | 2021-12-14 | 沙尔特宝有限公司 | Switching device with contact cover |
| CN110651351A (en) * | 2017-08-10 | 2020-01-03 | 欧姆龙株式会社 | Electromagnetic relay |
| CN110651351B (en) * | 2017-08-10 | 2021-12-07 | 欧姆龙株式会社 | Electromagnetic relay |
| CN115280455A (en) * | 2020-03-11 | 2022-11-01 | 株式会社电装 | Electromagnetic relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106062913B (en) | 2017-12-15 |
| WO2016038769A1 (en) | 2016-03-17 |
| JP6237916B2 (en) | 2017-11-29 |
| JPWO2016038769A1 (en) | 2017-04-27 |
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Address after: Saitama Prefecture, Japan Patentee after: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Address before: Tokyo, Japan Patentee before: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. |