CN102903574A - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
CN102903574A
CN102903574A CN2012102624602A CN201210262460A CN102903574A CN 102903574 A CN102903574 A CN 102903574A CN 2012102624602 A CN2012102624602 A CN 2012102624602A CN 201210262460 A CN201210262460 A CN 201210262460A CN 102903574 A CN102903574 A CN 102903574A
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CN
China
Prior art keywords
armature
contact
electromagnet
connector
fixed
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN2012102624602A
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Chinese (zh)
Other versions
CN102903574B (en
Inventor
奥田晃弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Matsushita Electric Industrial Co Ltd
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.)
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Publication of CN102903574A publication Critical patent/CN102903574A/en
Application granted granted Critical
Publication of CN102903574B publication Critical patent/CN102903574B/en
Active legal-status Critical Current
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement
    • H01H50/642—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement intermediate part being generally a slide plate, e.g. a card
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2227—Polarised relays in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnets (AREA)
  • Telephone Set Structure (AREA)

Abstract

An electromagnetic relay includes an electromagnet; an armature driven by a magnetic force of the electromagnet and configured to rotate with respect to the electromagnet; a card configured to linearly move when pressed by the armature; a movable contact point moving together with the card; a fixed contact point with which the movable contact point comes into contact or out of contact in response to rotation of the armature; and a housing for storing the electromagnet, the armature, the card, the movable contact point and the fixed contact point, the electromagnet and the fixed contact point being fixed to the housing. The armature includes at least one armature member made of a magnetic material and a connector piece made of a plastically deformable material, the connector piece being arranged between the armature member and the card.

Description

Electromagnetic relay
Technical field
The present invention relates to a kind of electromagnetic relay.
Background technology
Routinely, available such electromagnetic relay, it is via the magnetic force that uses electromagnet, by driving rotatably the armature that is connected to armature contact armature contact is brought to fixed contact and contacts or disengage (seeing for example H4-24242 Japanese utility model application open file).
About the electromagnetic relay of this type, known have an as shown in Figure 3 electromagnetic relay of example.
Now will describe the electromagnetic relay shown in Fig. 3 in detail.Electromagnetic relay shown in Fig. 3 comprises electromagnet 1, the armature 2 that is driven rotatably by the magnetic force of this electromagnet 1 and the housing 3 that is used for holding this electromagnet 1 and this armature 2.Electromagnet 1 is fixed to housing 3.In the explanation hereinafter, will define upside, downside, left side and right side based on Fig. 3.The front side of the drawing among Fig. 3 will be called " front side ".Yet these directions only limit for convenience of description, and may not meet the direction under the condition of actual use.
Housing 3 comprises body 31 and lid (not shown), and this body 31 has the storage recess 30 of opening the front side, and this lid is attached to the front side of body 31, to seal this storage recess 30.
Be fixed to housing 3 for the supporter 4 that supports rotatably armature 2 with respect to housing 3.This supporter 4 comprises flat standing part 41 and cylinder axis part 42, the thickness direction of this standing part 41 extends upward in front and back, and the left and right end portions of this standing part 41 is divided and is fixed to body 31, and this cylinder axis part is outstanding forward from the central area of the front surface of this standing part 41.The axial direction of shaft portion 42 extends upward in front and back.About being used for this standing part 41 is fixed to the method for body 31, can use such as the known modes such as (fitting) of cooperation.Armature 2 has the dead eye 20 of circular cross-section.This dead eye 20 extends through armature 2 at fore-and-aft direction.The internal diameter of this dead eye 20 is slightly larger than the external diameter of shaft portion 42.Shaft portion 42 inserts in the dead eye 20, and armature 2 is supported with respect to housing 3 thus, with the central axis rotation around shaft portion 42.
Electromagnet 1 comprises coil (not shown) and pole piece 11, and this coil is fixed to body 31 at the rear side place of standing part 41, so that its axial direction extends upward at upper and lower, this pole piece 11 is made by magnetic material, and by coil magnetizing.Pole piece 11 comprises body part (not shown) and variable magnetic pole part 11a, and this body part extends through coil at above-below direction, and this variable magnetic pole part 11a is outstanding forward from the top and bottom of this body part.Thus, pole piece 11 has the shape that substantially is U-shaped as a whole.More specifically, depend on the flow direction of the electric current that is supplied to coil, variable magnetic pole part 11a is geomagnetic into opposed polarity.The polarity of variable magnetic pole part 11a is mutually different.A plurality of (among Fig. 3 being three) coil terminals 60 remains in the housing 3.Coil terminals 60 is electrically connected to coil at the one end.The other end of coil terminals 60 is outstanding towards the left side of housing 3.Electric current is sent to coil by coil terminals 60.More specifically, the electromagnetic relay shown in Fig. 3 is so-called twin coil latching-type.Coil is provided with tap.Coil terminals 60 is electrically connected to opposite end and the tap of coil.
Armature 2 comprises two couples of fixed magnetic pole part 21a that are separately positioned on its upper part and end portion.Among the variable magnetic pole part 11a each is between every couple of fixed magnetic pole part 21a.In every couple of fixed magnetic pole part 21a, the fixed magnetic pole part 21a that is present in variable magnetic pole part 11a left side is geomagnetic into opposed polarity with the fixed magnetic pole part 21a that is present in variable magnetic pole part 11a right side.More specifically, armature 2 comprises two permanent magnets 22, two armature member 21 and molding synthetic resin body 23, the N utmost point of these two permanent magnets 22 is towards an identical left side or right, this two armature member 21 are made by magnetic material, and this permanent magnet 22 and this armature member 21 are inserted moulding with this molding synthetic resin body 23.In the armature 21 each has flat rectangular shape.In the armature member 21 each is at the magnetic pole of each in permanent magnet 22 of an equal magnetic attachment in surface of thickness direction.The opposite ends of each in the armature member 21 is prominent each that exceeds in the permanent magnet 22 up and down, and this opposite ends is served as fixed magnetic pole part 21a.If electric current supply is to the coil of electromagnet 1, then, depend on the direction of electric current flowing through coil, one that is present among the fixed magnetic pole part 21a on the left side of corresponding variable magnetic pole part 11a and right side is attracted to corresponding variable magnetic pole part 11a, thus, armature 2 is with respect to housing 3 rotations.In case electric current supply is to coil, the position of armature 2 position of the mobile armature contact 51 of armature 2 (and with) just keeps (locking) by the magnetic force of permanent magnet 22, until electric current flowing through coil on inverse direction.
With the mobile armature contact 51 of the rotation of armature 2, and be housed inside in the housing 3 with fixed contact 52 that this armature contact 51 contacts or disengages.Armature contact 51 and fixed contact 52 are electrically connected to respectively terminal board 61 and 62.In other words, along with the contacting or disengaging of armature contact 51 and fixed contact 52, the electrical connection between the terminal board 61 and 62 is switched on or cuts off.In the terminal board 61 and 62 each formed at the upwardly extending metallic plate of right and left by its thickness direction.In the terminal board 61 and 62 each is fixed to housing 3 with this pattern, that is, its upper part projects to housing 3 outsides.Armature contact 51 is electrically connected and is mechanically attached to terminal board 61 by holding contact spare 7.The end portion of this holding contact spare 7 is fixed to the right surface of terminal board 61, and the upper part elastically deformable of this holding contact spare 7, with the end portion dislocation on left and right directions with respect to holding contact spare 7.Holding contact spare 7 comprises a plurality of holding contact springs 71, and each in these a plurality of holding contact springs 71 is by forming at the upwardly extending leaf spring of upper and lower.Holding contact spring 71 superposes at thickness direction, and part and end portion mutually combine in the top.Armature contact 51 is fixed to the upper part of holding contact spare 7, thus armature contact 51 can be in the left side of fixed contact 52 with respect to housing 3 dislocation flexibly on left and right directions.
Armature 2 and armature contact 51 are mobile together by the sheet 8 that is connected to holding contact spare 7 and armature 2.This sheet 8 is flat as a whole, and its thickness direction extends upward at upper and lower.Sheet 8 is by the guiding of the inner surface of housing 3, thereby sheet 8 can move up at right and left with respect to housing 3.The terminal board 61 that is connected to armature contact 51 is not configured as interferes with the mobile route of sheet 8, thereby terminal board 61 should not hinder the dislocation of sheet 8.Armature recess 81(by the upper part of the right armature member 21 of armature 2 being inserted sheet 8 its upwards, downwards with to front opening) in, armature 2 and sheet 8 interconnect.Keeper recess by the upper part of holding contact spare 7 being inserted sheet 8 (not shown, its upwards, downwards with to front opening) in, holding contact spare 7 and sheet 8 interconnect.In leftmost one upper part in holding contact spring 71, be provided with flexure strip contact portion 72, this flexure strip contact portion 72 contacts with the inner surface towards the right side of keeper recess.Flexure strip contact portion 72 tilts, to extend gradually away from remaining holding contact spring 71.
Go in armature 2 dextrorotations under the state (hereinafter referred to as " closure state ") of moving range boundary (armature contact 51 contacts with fixed contact 52), because the strain of flexure strip contact portion 72 produces contact between armature contact 51 and the fixed contact 52.
Under state as shown in Figure 3, armature 2 is rotated counterclockwise to the moving range boundary state (hereinafter referred to as " off-state ") of (armature contact 51 keeps disengaging with fixed contact 52), holding contact spare 7 is strain as a whole, thereby its upper part is with respect to end portion dislocation left.At this moment, the spring force of holding contact spare 7 plays the effect of armature contact 51 towards fixed contact 52 biasings.In other words, along with the strain quantitative change is large, the current minimum (hereinafter referred to as " minimal turn-on electric current ") that is converted to the coil of the required electromagnet 1 of flowing through of closure state diminishes.
In this, about the method for Adjustment operation characteristic quantity (for example contact under minimal turn-on electric current or the closure state), can consider to use the method for the part plastic deformation that is connected to sheet 8 of armature 2.
Yet in above illustrated example, the part that is connected to sheet 8 of armature 2 is armature member 21.This armature member 21 forms relatively thick, with abundant increase magnetic force.Therefore, be difficult by using method Adjustment operation characteristic quantity mentioned above.
Summary of the invention
In view of above, the invention provides a kind of electromagnetic relay, its operating characteristics amount can easily be regulated.
According to an aspect of the present invention, provide a kind of electromagnetic relay, it comprises: electromagnet; Armature, it passes through the magnetic drive of this electromagnet, and is configured to respect to this electromagnet rotation; Sheet, it is configured to Linear-moving when being pressed by this armature; Armature contact, it is mobile with this sheet; Fixed contact, armature contact contact or disengage with this fixed contact in response to the rotation of armature; And housing, it is used for holding this electromagnet, this armature, this sheet, this armature contact and this fixed contact, this electromagnet and fixed contact are fixed to housing, wherein, this armature comprises at least one armature member of being made by magnetic material and the connector of being made by plastic deformable material, and this connector is arranged between armature member and the sheet.
Preferably, the interconnective line of rotation of the contact position of armature and sheet and armature is formed the angle with respect to the dislocation direction of this sheet, and this connector can bend to, so that, when looking from the direction of the rotation that is parallel to this armature, this angle becomes more near the right angle.
Preferably, this connector can be made by nonmagnetic substance.
In the present embodiment, can come the Adjustment operation characteristic quantity by making the connector plastic deformation, and not require that this connector is magnetic, and this connector is more yielding than armature member.Therefore, compare with the situation that armature member and sheet directly contact, regulate easily the operating characteristics amount of electromagnetic relay.
Description of drawings
Fig. 1 shows the front view of electromagnetic relay according to an embodiment of the invention, wherein is the clear lid that removed.
Fig. 2 shows the front view of the comparative example of this electromagnetic relay, wherein is the clear lid that removed.
Fig. 3 shows the front view of conventional electromagnetic relay, wherein is the clear lid that removed.
Embodiment
With reference to the accompanying drawing that forms this paper part, describe a preferred embodiment of the present invention in detail.
The base configuration of present embodiment is basic identical with the example shown in Fig. 3.To common parts be described no longer.
In the present embodiment, as shown in fig. 1, armature 2 comprises and is connected to right armature member 21 and the prominent connector 24 that exceeds this right armature member 21 upwards.This connector 24 inserts in the armature recess 81 of sheet 8.Connector 24 is made by plastic deformable material.Connector 24 forms flat pattern, to have the thickness less than the thickness of armature member 21.The rotation quadrature of the thickness direction of connector 24 and armature 2.
About the method that is used for connector 24 and armature member 21 are bonded together, can suitably use the known mode such as filleting, cooperation or welding.About the material of connector 24, preferably use nonmagnetic substance, for example aluminium.
Use structure mentioned above, by making thickness less than armature member 21 and than armature member 21 more yielding connector 24 plastic deformations, the operating characteristics amount that can regulate electromagnetic relay.Therefore, compare with the situation that armature member 21 is inserted the armature recess 81 of sheet 8, be easier to the Adjustment operation characteristic quantity.
For example, if connector 24 bendings are moving right moving plate 8(namely, if the upper part of connector 24 is with respect to its end portion dislocation to the right), then the distortion quantitative change of flexure strip contact portion 72 is large under closure state.This is so that the contact that can obtain to increase.On the other hand, diminish at open mode lower contact keeper 7 deflection as a whole.Thus, the minimal turn-on electric current uprises.
On the contrary, if connector 24 bendings are being moved to the left sheet 8(namely, if the upper part of connector 24 is with respect to its end portion dislocation left), then the deflection of flexure strip contact portion 72 diminishes under closure state.This makes it possible to reduce contact.On the other hand, large in open mode lower contact keeper 7 distortion quantitative change as a whole.Thus, minimal turn-on electric current step-down.
With armature 2(connector 24) form angle (hereinafter referred to as " driving angle ") with the interconnective line of rotation of the contact position of sheet 8 and armature 2 with respect to the dislocation direction of sheet 8, when from the front side, namely look in the direction of the rotation that is parallel to armature 2, if poor between right angle (90 degree) and this angle becomes large, then the component of the revolving force of armature 2 (it works as the thrust of pressing tablet 8 up or down) becomes greatly.If it is large that this component becomes, then act between connector 24 and the sheet 8 or the frictional force between the inner surface of sheet 8 and housing 3 becomes large.This has also increased the required actuating force (inputing to the electrical power of electromagnet 1) of on-off state of double-throw contact.
In the example shown in Figure 1, connector 24 bendings are to guarantee to drive nearly 90 degree of corner connection.More specifically, because the rotation (the namely central axis of shaft portion 42) of armature 2 is positioned at the left side of the moving range of armature recess 81, connector 24 bends to the substantially shape of similar S, thereby it is present near the sheet 8 end parts and can be positioned at the left side that is present near the end parts the armature member 21.Therefore, compare with connector 24 unbending situations as shown in Figure 2, can reduce acting between connector 24 and the sheet 8 or the frictional force between the inner surface of sheet 8 and housing 3.This is so that can reduce electrical power required when the open and close contact.
Substitute set forth as mentioned like that with connector 24 and armature member 21 and sheet 8 directly contiguously, can arrange additional member between connector 24 and the sheet 8 or between armature member 21 and the connector 24.
Although illustrate and illustrated the present invention with regard to this embodiment, the present invention is not limited to this.It will be understood by those of skill in the art that under not departing from by claim limited range subsequently, can make a variety of changes and revise.

Claims (3)

1. electromagnetic relay comprises:
Electromagnet;
Armature by the magnetic drive of described electromagnet, and is configured to respect to described electromagnet rotation;
Sheet, it is configured to Linear-moving when being pressed by described armature;
Armature contact, it is mobile with described;
Fixed contact, described armature contact contact or disengage with described fixed contact in response to the rotation of described armature; And
Housing, it is used for holding described electromagnet, described armature, described, described armature contact and described fixed contact, and described electromagnet and described fixed contact are fixed to described housing,
Wherein, described armature comprises at least one armature member of being made by magnetic material and the connector of being made by plastic deformable material, and described connector is arranged between described armature member and described.
2. relay according to claim 1, it is characterized in that, with described armature and described contact position and the dislocation direction formation angle of the interconnective line of rotation with respect to described of described armature, described connector bends to, so that, when looking from the direction of the rotation that is parallel to described armature, described angle becomes more near the right angle.
3. relay according to claim 1 and 2 is characterized in that, described connector is made by nonmagnetic substance.
CN201210262460.2A 2011-07-27 2012-07-26 Electromagnetic relay Active CN102903574B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP164191/2011 2011-07-27
JP2011164191A JP5821030B2 (en) 2011-07-27 2011-07-27 Electromagnetic relay

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Publication Number Publication Date
CN102903574A true CN102903574A (en) 2013-01-30
CN102903574B CN102903574B (en) 2016-04-27

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JP (1) JP5821030B2 (en)
CN (1) CN102903574B (en)
ES (1) ES2445806T3 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN103681116A (en) * 2013-12-18 2014-03-26 周灵通 Small large-power magnetic latching relay
CN105097362A (en) * 2014-05-12 2015-11-25 松下知识产权经营株式会社 Contact device
CN105161368A (en) * 2015-09-22 2015-12-16 林勇 Spring-type magnetic holding relay
CN106024523A (en) * 2016-07-30 2016-10-12 贾晓轻 Power relay control method

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GB2511569B (en) * 2013-03-08 2015-05-06 Christopher John Stanton Improved switch and associated methods
JP6406596B2 (en) * 2014-05-12 2018-10-17 パナソニックＩｐマネジメント株式会社 Contact device
CN104037026B (en) * 2014-06-30 2016-05-04 惠州亿纬锂能股份有限公司 A kind of magnetic latching relay

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CN101763985A (en) * 2008-12-25 2010-06-30 东莞市三友联众电器有限公司 Equidirectional dual-thrust electromagnetic relay
WO2011028250A1 (en) * 2009-08-27 2011-03-10 Tyco Electronics Corporation Electrical switching devices having moveable terminals
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Publication number Priority date Publication date Assignee Title
CN103681116A (en) * 2013-12-18 2014-03-26 周灵通 Small large-power magnetic latching relay
CN105097362A (en) * 2014-05-12 2015-11-25 松下知识产权经营株式会社 Contact device
CN105097362B (en) * 2014-05-12 2019-03-19 松下知识产权经营株式会社 Contact making device
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CN105161368A (en) * 2015-09-22 2015-12-16 林勇 Spring-type magnetic holding relay
CN106024523A (en) * 2016-07-30 2016-10-12 贾晓轻 Power relay control method
CN106024523B (en) * 2016-07-30 2018-07-31 永春康馨专利技术服务有限公司 Power relay control method

Also Published As

Publication number Publication date
EP2551870B1 (en) 2014-01-29
ES2445806T3 (en) 2014-03-05
EP2551870A1 (en) 2013-01-30
CN102903574B (en) 2016-04-27
JP5821030B2 (en) 2015-11-24
JP2013030309A (en) 2013-02-07

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