CN201311886Y - Electromagnetic contactor - Google Patents

Electromagnetic contactor Download PDF

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Publication number
CN201311886Y
CN201311886Y CNU2008201352807U CN200820135280U CN201311886Y CN 201311886 Y CN201311886 Y CN 201311886Y CN U2008201352807 U CNU2008201352807 U CN U2008201352807U CN 200820135280 U CN200820135280 U CN 200820135280U CN 201311886 Y CN201311886 Y CN 201311886Y
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CN
China
Prior art keywords
coil
contactor
flange
winding
magnetic circuit
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.)
Expired - Lifetime
Application number
CNU2008201352807U
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Chinese (zh)
Inventor
阿兰·波蒂尔
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ABB France SAS
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ABB France SAS
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Filing date
Publication date
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Publication of CN201311886Y publication Critical patent/CN201311886Y/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

The utility model relates to an electromagnetic contactor comprising a magnetic path and a coil (2) which is used for generating a magnetic field. The magnetic path comprises a fixed part (3) which is fixed relative to the coil and a movable part (4) which is movable relative to the coil under the action of the magnetic field generated by the coil; the coil forms a winding surrounding an axial channel (12); the movable part of the magnetic path moves in the axial channel which is longitudinally limited by two tail ends of the winding; the fixed part of the magnetic path comprises a containing cavity in which the winding of the coil is arranged; the containing cavity is at least partially fixed by a wall which comprises an opening (7) capable of enabling the movable part of the magnetic path to pass through; the contactor further comprises a control device for controlling voltage in wave trough or interruption. The control device for controlling voltage in wave trough or interruption comprises a flange (13) which extends from the wall and surrounds the opening; and the flange is positioned at the outer part of the axial channel set by the winding of the coil.

Description

Electromagnetic contactor
Technical field
The utility model relates to a kind of electromagnetic contactor.
Background technology
The main effect of electromagnetic contactor is to close and open circuit according to the appearance of control voltage.
Usually wish when having voltage, can not open circuit fast.
Yet the network disturbance that certain areas may exist and some environmental standard require to have MIN control when voltage is in trough or voltage interruption.This just need be equivalent to before opening circuit in the time of alternating voltage one-period usually, and contactor can bear the disappearance of control voltage.
The utility model content
For realizing this purpose, known ground can adopt the electromagnetic contactor of following type, and it comprises:
-be used to produce the coil in magnetic field,
-magnetic circuit comprises: with respect to the part of coil stationary, and under the action of a magnetic field that sends by coil with respect to the part of coil activity,
Described coil forms winding around axial passage, the movable part of described magnetic circuit can move in this axial passage, and the longitudinal size of axial passage is limited by two ends of the winding of coil,
The standing part of described magnetic circuit comprises cavity volume, is holding the winding of coil in cavity volume, and described cavity volume is made by wall at least in part, and described wall has the opening that the movable part that can make magnetic circuit passes through, and
Described contactor also is included in the control device of voltage when being in trough (creux) or voltage interruption.
Control device when voltage is in trough can be made of the energy snubber system, and this system is installed on the terminal (borne) of the coil of contactor.Yet this system but can increase the complexity and the cost of contactor.
In the power supply of contactor is under the situation of the electricity card that has been subjected to the chopper effect (for example described in the patent documentation EP0789378 like that) control, when contactor close and process in voltage interruption in electric current in the coil be diode by free runner (roue libre) when being maintained, the control characteristic in alternating voltage cycle can obtain naturally according to the feature of the magnetic circuit of the equipment that is used for medium-sized or large-scale specification and coil.
Yet for the equipment of small dimension more, the effect of the diode that this performance can't be by free runner and obtaining naturally is because the ratio value of the L/R of the assembly of the magnetic circuit/coil in off position is too small.
Therefore, the technical problems to be solved in the utility model provides a kind of like this contactor, promptly no matter the size of contactor is much, it all can obtain control in a kind of improved mode when voltage is in trough or voltage interruption, keep in touch the simple in structure of device simultaneously, and do not make the oversize of its magnetic circuit.
For this reason, a purpose of the present utility model provides a kind of contactor of the above-mentioned type, it is characterized in that, control device when voltage is in trough or voltage interruption comprises: begin the flange that extends around opening from wall, described flange is positioned at the outside of the described axial passage that the winding by described coil defines.
That is, a kind of electromagnetic contactor comprises:
-be used to produce the coil in magnetic field,
-magnetic circuit comprises: with respect to the part of described coil stationary, and can be under the action of a magnetic field that sends by described coil with respect to the part of described coil activity,
Described coil forms winding around the axial passage, and the described movable part of described magnetic circuit moves in described axial passage, and described axial passage is defined by two ends of the winding of described coil in the vertical,
The described standing part of described magnetic circuit comprises cavity volume, accommodates the winding of described coil in described cavity volume, and described cavity volume is defined by wall at least in part, and described wall comprises the opening that the movable part that can make described magnetic circuit passes through,
Described contactor also comprises the control device when voltage is in trough or voltage interruption,
It is characterized in that,
Control device when described voltage is in trough or voltage interruption comprises: begin around the flange of described opening extension from described wall, described flange is positioned at the described axial passage outside of being made by the winding of described coil.
By above-mentioned setting of the present utility model, the surface channel of the flux between standing part and the movable part has been thus lifted to the height of flange with respect to movable part.For this reason, the magnetic permeability under the magnetic circuit closure state strengthens, and need not to occupy the coil region relative with movable part, and need not to leave surplus for magnetic circuit.
Advantageously, described flange begins to extend around described opening and towards the inside of described cavity volume from described wall.
The above-mentioned volume that can limit contactor that is provided with.Advantageously, the inside dimension of the winding of described coil is greater than the size of the channel part of being made by described flange.
According to an embodiment, the inside dimension of the winding of described coil is less than the external dimensions of described flange.
Advantageously, described contactor comprises bobbin, and described bobbin allows the winding of described coil around described bobbin setting, and described bobbin comprises the cavity volume that is used to admit described flange.
The above-mentioned thickness that can utilize existing bobbin that is provided with is inserted on the winding with the wire guide of permission with coil.For this reason, the existence of flange does not also mean that the height that reduces winding, does not mean that the height of the assembly that increase is made of the standing part of the winding of bobbin, coil and magnetic circuit yet.
Advantageously, described bobbin comprises the wall that described flange and described axial passage (described movable part moves therein) are separated.
Advantageously, the standing part of described magnetic circuit comprises:
-main body is provided with open chamber in the described main body, the chamber of described opening forms the cavity volume of described coil, and
-lid, described lid are used for partly sealing described cavity volume, are provided with the access portal of the movable part of described magnetic circuit in the described cavity volume,
Described main body comprises the shoulder at the edge of recessed described chamber, and described shoulder is used to place the edge of described lid.
According to a kind of possibility, described flange and described lid constitute by single.
According to another kind of possibility, described flange is made of the element different with described lid.
Because above-mentioned setting, so only by changing two kinds of forms that lid can provide contactor: a kind of is the form that hurtles down that does not comprise the lid of flange; Another kind is the control forms of voltage when being in trough or voltage interruption, and this form comprises the lid with flange, but it can not increase volume, can significantly not increase expense yet.
Advantageously, the movable part of described magnetic circuit is handled through surface protection, and described surface protection processing can be avoided producing non-magnetic sedimentary deposit on the described standing part of described magnetic circuit and the contact point between the described movable part.
The above-mentioned increase that the parasitic magnetic gap that can avoid relevant with surface treatment is set, and the control can improve electric current and be in trough and current interruptions the time.
Advantageously, described surface treatment is that phosphatization is handled.
Handle the magnetic permeability that can obtain enough protections and maximum such as the phosphatization of zinc and/or iron.
Description of drawings
By means of with reference to subsidiary, according to the description (exemplary and non-limiting) of the schematic diagram of an embodiment of the utility model, the utility model will be better understood.
Fig. 1 is the part stereogram according to contactor of the present utility model;
Fig. 2 is the phantom of the contactor of Fig. 1;
Fig. 3 is the detailed view of the exaggerated scale of Fig. 2;
Fig. 4 is second detailed view of the exaggerated scale of Fig. 2.
Embodiment
To an embodiment shown in Figure 3, electromagnetic contactor of the present utility model comprises the insulation shell (not shown) that is used for fixing on support according to Fig. 1.
This insulation shell is formed with cavity volume, accommodates in this cavity volume:
-be used to produce the coil 2 in magnetic field, and
-magnetic circuit, described magnetic circuit comprise the part 3 with respect to coil stationary, and can be under the action of a magnetic field that sends by coil 2 with respect to the part 4 of coil 2 activities.
Movable contact bar 5 fixedly mounts in known manner with the movable part 4 of magnetic circuit.Contact bar 5 comprises armature contact, and according to the position of movable part 4, described armature contact contacts with fixed contact or is separated with these fixed contacts, so that power circuit is closed or open.When coil 2 was not switched on, the elastic device 6 with spring shape can bring back to movable part 4 on its resting position.
The standing part 3 of magnetic circuit comprises main body 8, the bottom that this main body 8 comprises stylolitic part and is positioned at this stylolitic part end.This main body forms open chamber, thereby forms the cavity volume that holds coil 2 in it.
The standing part 3 of magnetic circuit also comprises the lid 9 that is used for partly sealing cavity volume, and this lid 9 forms wall, is provided with access portal 7 in this wall, and this access portal 7 allows movable part 4 processes of magnetic circuit.
Main body 8 comprises the shoulder 10 at the edge of recessed chamber, and this shoulder is used to place the edge of lid 9.
Movable part 4 is cylindrical, and its diameter can make in its admission passage opening 7 and in axial passage 12 and move, and forms the winding of coil 2 around this axial passage.The winding of this coil extends between first terminal 2a that approaches access portal 7 and the second terminal 2b away from access portal 7.Axial passage is by defining in the vertical with winding two terminal 2a, 2b corresponding two tail end section S1, S2.
According to feature of the present utility model, flange 13 is by lid 9 initial formation, and towards the inside that is arranged on the cavity volume in the standing part 3, form around opening 7.
This flange 13 is with respect to the inner surface of lid 9, extends being less than or equal on the length L of distance D, thereby the inner surface of lid 9 is separated with winding.
Therefore, flange 13 is in the axial passage outside of being made by the winding of coil 2.
In an illustrated embodiment, flange 13 constitutes by single with lid.According to a kind of modification, flange 13 also can be made of the discrete component that is arranged on the lid.
The interior diameter d1 of coil windings is greater than the diameter d 2 of the channel part of being made by flange 13.
The interior diameter d1 of coil windings is less than the overall diameter d3 of flange 13.
Contactor comprises bobbin (carcasse) 14, and this bobbin allows to be provided with around bobbin at its tubular portion 15 places the winding of coil 2, and this tubular portion 15 is made by the wall of axial passage 12, and movable part 4 can move in passage 12.
Bobbin also comprises cavity volume 17, and this cavity volume 17 is used to admit the flange 13 of opening 7.The axial passage 12 that the wall of tubular portion is made flange 13 and described wall separates, thereby directly contacts at flange 13 places between the movable part 4 that can avoid armature and the standing part 3.The diameter d 4 of axial passage 12 is less than the diameter d 2 of the channel part of being made by flange 13.
Standing part 3 and movable part 4 have tapering part 18,19 in opposite directions.Especially, standing part 3 comprises the tapering part 18 of projection, and this part is arranged on the bottom of main body 8.Movable part has recessed tapering part 19.Certainly, recess can be positioned on the standing part, and bossing can be positioned on the movable part.
The shape that described two tapering parts 18,19 have is suitable for can leaving magnetic gap (entrefer) between two tapering parts when standing part and movable part contact with each other.Particularly, when standing part and movable part contacted, the smooth terminal end of two tapering parts can not contact.Contact point is between movable part 4 and standing part 3, between the bottom of the main body of the annular section 20 of movable part end and standing part.
At the contact point place, handle by the protection on surface and to avoid occurring non-magnetic coating.Particularly, surface treatment is the phosphatization processing of zinc and/or iron.
Obviously, the utility model is not limited to the above preferred embodiment of describing as non-limiting example, and on the contrary, the utility model comprises all modification of above-mentioned execution mode.

Claims (11)

1. electromagnetic contactor comprises:
-be used to produce the coil (2) in magnetic field,
-magnetic circuit comprises: the part (3) fixing with respect to described coil (2), and can be under the action of a magnetic field that sends by described coil with respect to the part (4) of described coil activity,
Described coil (2) forms winding on every side at axial passage (12), and the described movable part (4) of described magnetic circuit moves in described axial passage (12), and described axial passage is defined by two ends of the winding of described coil (2) in the vertical,
The described standing part (3) of described magnetic circuit comprises cavity volume, accommodates the winding of described coil in described cavity volume, and described cavity volume is defined by wall at least in part, and described wall comprises the opening (7) that the movable part (4) that can make described magnetic circuit passes through,
Described contactor also comprises the control device when voltage is in trough or voltage interruption,
It is characterized in that,
Control device when described voltage is in trough or voltage interruption comprises: begin around the flange (13) of described opening (7) extension from described wall, described flange (13) is positioned at the described axial passage outside of being made by the winding of described coil (2).
2. contactor according to claim 1 is characterized in that, described flange (13) extends around described opening (7) and towards the inside of described cavity volume from described wall.
3. according to each described contactor among the aforementioned claim 1-2, it is characterized in that the inside dimension (d1) of the winding of described coil (2) is greater than the size (d2) of the channel part of being made by described flange (13).
4. according to each described contactor among the aforementioned claim 1-2, it is characterized in that the inside dimension (d1) of the winding of described coil (2) is less than the external dimensions (d3) of described flange (13).
5. according to each described contactor among the aforementioned claim 1-2, it is characterized in that, described contactor comprises bobbin (14), described bobbin (14) allows the winding of described coil (2) around described bobbin setting, and described bobbin (14) comprises the cavity volume (17) that is used to admit described flange (13).
6. contactor according to claim 5 is characterized in that, described bobbin (14) comprises the wall that described axial passage (12) that described flange (13) and described movable part (4) are moved separates within it.
7. according to each described contactor among the aforementioned claim 1-2, it is characterized in that the standing part of described magnetic circuit (3) comprising:
-main body (8) is provided with open chamber in the described main body, the chamber of described opening forms the cavity volume of described coil (2), and
-lid (9), described lid are used for partly sealing described cavity volume, are provided with the access portal (7) of the movable part (4) of described magnetic circuit in the described lid (9),
Described main body (8) comprises the shoulder (10) at the edge of recessed described chamber, and described shoulder (10) is used to place the edge of described lid (9).
8. contactor according to claim 7 is characterized in that, described flange (13) constitutes by single with described lid (9).
9. contactor according to claim 7 is characterized in that, described flange (13) is made of the element different with described lid (9).
10. according to each described contactor among the aforementioned claim 1-2; it is characterized in that; the movable part of described magnetic circuit (4) is handled through surface protection, and described surface protection processing can be avoided producing non-magnetic sedimentary deposit on the described standing part (3) of described magnetic circuit and the contact point between the described movable part (4).
11. contactor according to claim 10 is characterized in that, described surface treatment is that phosphatization is handled.
CNU2008201352807U 2008-01-07 2008-09-12 Electromagnetic contactor Expired - Lifetime CN201311886Y (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0800070A FR2926160B1 (en) 2008-01-07 2008-01-07 ELECTROMAGNETIC CONTACTOR
FR08/00070 2008-01-07

Publications (1)

Publication Number Publication Date
CN201311886Y true CN201311886Y (en) 2009-09-16

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Family Applications (2)

Application Number Title Priority Date Filing Date
CNU2008201352807U Expired - Lifetime CN201311886Y (en) 2008-01-07 2008-09-12 Electromagnetic contactor
CNA2008101672496A Pending CN101483119A (en) 2008-01-07 2008-10-16 Electromagnetic contactor

Family Applications After (1)

Application Number Title Priority Date Filing Date
CNA2008101672496A Pending CN101483119A (en) 2008-01-07 2008-10-16 Electromagnetic contactor

Country Status (3)

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EP (1) EP2077571B1 (en)
CN (2) CN201311886Y (en)
FR (1) FR2926160B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI480377B (en) * 2013-04-02 2015-04-11 Genereach Biotechnology Corp Methods for detecting Bacillus anthracis

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816320A1 (en) * 1968-12-21 1970-07-09 Bosch Gmbh Robert Electromagnetic relay
US3575676A (en) * 1969-11-04 1971-04-20 Gen Electric High-speed, high-current solenoid
US4893101A (en) * 1988-10-21 1990-01-09 Ericson Manufacturing Company Resettable ground fault circuit interrupter
SE505747C2 (en) 1996-02-07 1997-10-06 Asea Brown Boveri Contactor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI480377B (en) * 2013-04-02 2015-04-11 Genereach Biotechnology Corp Methods for detecting Bacillus anthracis

Also Published As

Publication number Publication date
FR2926160A1 (en) 2009-07-10
EP2077571A1 (en) 2009-07-08
EP2077571B1 (en) 2013-08-21
FR2926160B1 (en) 2009-12-25
CN101483119A (en) 2009-07-15

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GR01 Patent grant
CX01 Expiry of patent term
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Granted publication date: 20090916