CN102280313A - Relay - Google Patents

Relay Download PDF

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Publication number
CN102280313A
CN102280313A CN2011102056169A CN201110205616A CN102280313A CN 102280313 A CN102280313 A CN 102280313A CN 2011102056169 A CN2011102056169 A CN 2011102056169A CN 201110205616 A CN201110205616 A CN 201110205616A CN 102280313 A CN102280313 A CN 102280313A
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CN
China
Prior art keywords
relay
gap
parts
contact
permanent magnet
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Granted
Application number
CN2011102056169A
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Chinese (zh)
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CN102280313B (en
Inventor
柚场誉嗣
高野哲
佐宗裕文
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Fujitsu Component Ltd
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Fujitsu Component Ltd
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Publication date
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Publication of CN102280313A publication Critical patent/CN102280313A/en
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Publication of CN102280313B publication Critical patent/CN102280313B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H2050/049—Assembling or mounting multiple relays in one common housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity

Abstract

A relay is disclosed that includes a first opening and closing part including an openable and closable first gap; a second opening and closing part including an openable and closable second gap, the second opening and closing part being placed side by side with the first opening and closing part so that the first gap and the second gap are arranged side by side; a magnetization driving part configured to cause the first opening and closing part and the second opening and closing part to simultaneously operate; and a permanent magnet configured to apply a magnetic field on the first gap of the first opening and closing part and the second gap of the second opening and closing part in the same direction.

Description

Relay
The application is that the application number of on June 23rd, 2008 application is 200810128681.4, denomination of invention is divided an application for the patent application of " relay ".
Technical field
The present invention relates to relay, more specifically, the present invention relates to direct current high voltage control relay, it can be used in the circuit that must block high voltage direct current.
Background technology
In some circuit, the electric current of being flowed through is the direct current of high pressure, and these circuit for example are the circuit of battery circumferential in the electric motor car and the circuit in the uninterrupted power supply (ups) Unity, wherein, to the civilian power interruptions of computer system power supply the time, UPS is activated and to computer system power supply.
Under situation about relay being applied in these circuit, when the one-tenth docking point that is in contact with one another of relay is separated from each other, owing on relay, acting on high voltage, so between contact, will there be arc current to flow through, this arc current can damage contact, thereby has shortened the available work life-span of relay.
The unit of the high voltage direct current circuit of disconnection and closed UPS comprises the assembly of relay and semiconductor switch.Semiconductor switch has reduced the current value of relay of flowing through, thereby has prevented to produce electric arc between the contact of relay when open circuit.
But,, except relay, also need to be provided with semiconductor switch, thereby increased the number of parts according to above-mentioned structural design.In the reliability direction, this is a problem, in addition, has also increased cost.
Disclosed 2001-176370 Japanese Patent Application Publication a kind of relay that is applied in the battery of electric vehicle peripheral circuit.According to the design of this relay, near contact, be provided with permanent magnet, thereby the arc current that is produced in the time of utilizing the magnetic force of permanent magnet to come the deflection contact to separate can prevent that thus contact is damaged, and then improve the durability of relay.In addition, design according to this relay, one docking point group arranged abreast, and the arc current that produces between the arc current that produces between contact group and another contact group is all by outside deflection therein, with this make two arc currents be mutually away from.
But this relay is set at the centre of interconnection circuit, and this interconnection circuit couples together an electrode of DC power supply-for example anodal with load circuit, and two above-mentioned contact groups are connected in parallel in the interconnection circuit.
Thereby, even when two contacts of relay when being disconnected, the negative pole of DC power supply still keeps being connected with load circuit, thereby DC power supply and load circuit are fully not separate.The result is exactly to exist such risk: carry electric current-especially under the unsettled situation of earth potential continuously to load circuit.
In addition, above-mentioned relay belongs to the terminals connecting-type, and its size is big.In addition, above-mentioned relay is not designed to and can be installed on the printed circuit board (PCB).
Disclosed 10-326553 Japanese Patent Application Publication a kind of relay, it has a docking point group and is arranged on into permanent magnet between the docking point group, and this relay is designed to and can be installed on the printed circuit board (PCB).But the electric arc that produces at each contact group place can not be blown out laterally, can not be simultaneously severed from dc power anode and the extended interconnection circuit of negative pole respectively.
Summary of the invention
Various execution mode of the present invention can solve or alleviate above-mentioned one or more problems.
According to one embodiment of the present invention, the application provides a kind of relay, and in this relay, above-mentioned one or more problems can be solved or alleviate.
According to one embodiment of the present invention, the application provides a kind of relay, and it comprises: first opens and closes parts, and it has and can separate and closeable first gap; Second opens and closes parts, and it has and can separate and closeable second gap, and described second opens and closes parts is arranged to first to open and close parts side-by-side, so that first gap and second gap are arranged abreast; The excitation driver part, it is configured to impel the first switching parts and second to open and close parts and side by side moves; And permanent magnet, it is configured to apply magnetic field with identical direction to first first gap and second second gap that opens and closes parts that opens and closes parts.
According to one embodiment of the present invention, the application provides a kind of relay, it comprises: the first relay main body, it comprises that first opens and closes the parts and the first excitation driver part, the first excitation driver part is configured to impel first to open and close parts work, first opens and closes parts comprises first travelling contact and first fixed contact, two contacts across first gap mutually facing to, thereby removable state for being in contact with one another and disengaging mutually, first opens and closes parts also comprises the first fluid spring terminal with described first travelling contact, and the first fixing spring terminal with described first fixed contact; The second relay main body, it comprises that second opens and closes the parts and the second excitation driver part, the second excitation driver part is configured to impel second to open and close parts work, second opens and closes parts comprises second travelling contact and second fixed contact, these two contacts across second gap mutually facing to, thereby removable state for being in contact with one another and disengaging mutually, second opens and closes parts also comprises second fluid spring terminal with described second travelling contact and the second fixing spring terminal with described second fixed contact; Housing, it comprises side plate parts and top board parts, and is hiding the first relay main body and the second relay main body; And first permanent magnet and second permanent magnet, they are fixed on the top board parts of housing, so that respectively facing to first gap and second gap, first permanent magnet is oriented to the identical magnetic pole that has facing to first gap and second gap with second permanent magnet.
According to one embodiment of the present invention, the application provides a kind of relay, it comprises: the first relay main body, it comprises that first opens and closes the parts and the first excitation driver part, the first excitation driver part is configured to impel first to open and close parts work, first opens and closes parts comprises first travelling contact and first fixed contact, these two contacts across first gap mutually facing to, thereby removable state for being in contact with one another and disengaging mutually, first opens and closes parts also comprises second travelling contact and second fixed contact, these two contacts across second gap mutually facing to, thereby removable state for being in contact with one another and disengaging mutually, first opens and closes parts also comprises the first fixing spring terminal with described first fixed contact, the second fixing spring terminal with described second fixed contact, and the first movable elastic component with described first travelling contact and second travelling contact, the first movable elastic component strides across the first fixing spring terminal and the second fixing spring terminal extends; The second relay main body, it comprises that second opens and closes the parts and the second excitation driver part, the second excitation driver part is configured to impel second to open and close parts work, second opens and closes parts comprises the 3rd travelling contact and the 3rd fixed contact, these two contacts across third space mutually facing to, thereby removable state for being in contact with one another and disengaging mutually, second opens and closes parts also comprises the 4th travelling contact and the 4th fixed contact, these two contacts across the 4th gap mutually facing to, thereby removable state for being in contact with one another and disengaging mutually, second opens and closes parts also comprises the 3rd fixing spring terminal with described the 3rd fixed contact, the 4th fixing spring terminal with described the 4th fixed contact, and the second movable elastic component with described the 3rd travelling contact and the 4th travelling contact, the second movable elastic component strides across the 3rd fixing spring terminal and the 4th fixing spring terminal extends; Housing, it comprises side plate parts and top board parts, and is hiding the first relay main body and the second relay main body; And first permanent magnet and second permanent magnet, they are fixed on the top board parts of housing, so that first permanent magnet is facing to first gap and second gap, and making second permanent magnet facing to third space and the 4th gap, first permanent magnet is oriented to the identical magnetic pole that has facing to first to the 4th gap with second permanent magnet.
According to one embodiment of the present invention, the application provides a kind of relay, it comprises: first opens and closes parts, these parts comprise first travelling contact and first fixed contact, these two contacts across first gap mutually facing to, so that can move to the state that is in contact with one another and is separated from each other, first opens and closes parts also comprises second travelling contact and second fixed contact, these two contacts across second gap mutually facing to, so that can move to the state that is in contact with one another and is separated from each other, first opens and closes parts also comprises first fixing spring terminal with described first fixed contact and the second fixing spring terminal with described second fixed contact, and comprise that the first movable elastic component with first travelling contact and second travelling contact, the first movable elastic component stride across the first fixing spring terminal and the second fixing spring terminal extends; Second opens and closes parts, it comprises the 3rd travelling contact and the 3rd fixed contact, these two contacts across third space mutually facing to, so that can move to the state that is in contact with one another and is separated from each other, second opens and closes parts also comprises the 4th travelling contact and the 4th fixed contact, these two contacts across the 4th gap mutually facing to, so that can move to the state that is in contact with one another and is separated from each other, second opens and closes parts also comprises the 3rd fixing spring terminal with described the 3rd fixed contact and the 4th fixing spring terminal with described the 4th fixed contact, and comprise that the second movable elastic component with the 3rd travelling contact and the 4th travelling contact, the second movable elastic component stride across the 3rd fixing spring terminal and the 4th fixing spring terminal extends; Single excitation driver part, it is configured to impel first to open and close the parts and the second switching parts work; Housing, it comprises side plate parts and top board parts, and is hiding the first switching parts, second switching parts and the excitation driver part; And first permanent magnet and second permanent magnet, they are fixed on the top board parts of housing, so that first permanent magnet is facing to first gap and second gap, and making second permanent magnet facing to third space and the 4th gap, first permanent magnet is oriented to the identical magnetic pole that has facing to first to the 4th gap with second permanent magnet.
According to an aspect of the present invention, be provided with permanent magnet, thereby can on first gap (first gap) and second that opens and closes parts opens and closes the gap (second gap) of parts, apply the magnetic field of equidirectional.Thereby, by being provided with first with the centre of first interconnection circuit of load and opening and closing parts and the second switching parts are set connecting dc power anode, just can utilize single relay to cut off first interconnection circuit and second interconnection circuit simultaneously in the centre of second interconnection circuit that is connected dc power cathode and load.
In addition,, extinguishes on the electric arc in first gap and the generation of second gap location owing to all outwards being blown out, so, can prevent that the first switching parts and second are opened and closed parts causes damage.The result is exactly, even through after the off-on operation repeatedly, the performance of relay any decline can not occur yet, thereby relay can be competent at very long available labour time.
In addition, when being installed to relay on the printed circuit board (PCB), need not to cross over the interconnection circuit on this printed circuit board (PCB).Thereby, can only utilize the one-sided interconnection circuit that forms of printed circuit board (PCB).
Description of drawings
From detailed description considered in conjunction with the accompanying drawings hereinafter, can clearly realize that other purpose of the present invention, feature and advantage more, in the accompanying drawings:
Schematic diagram among Fig. 1 has been represented the structural principle according to relay of the present invention;
Schematic diagram among Fig. 2 has represented to have the circuit arrangement according to relay of the present invention;
Schematic diagram among Fig. 3 has been represented the another kind of structural principle according to relay of the present invention;
Perspective representation among Fig. 4 according to the relay of first embodiment of the invention, this view is observed and is made through housing;
Fig. 5 A to Fig. 5 D be respectively shown in Figure 4, according to top plan view, X2 sectional view, Y2 sectional view and the upward view of the relay of first embodiment of the invention;
Graphical presentation among Fig. 6 utilize the failure of current effect that realizes according to the relay of first embodiment of the invention;
Fig. 7 represented according to first embodiment of the invention, permanent magnet is fixed to another kind of structure on the housing;
Fig. 8 A is respectively X2 sectional view, Y2 sectional view and a upward view according to the relay of second embodiment of the invention to Fig. 8 C;
Perspective representation among Fig. 9 according to the main body of the relay of second embodiment of the invention;
Schematic diagram among Figure 10 has been represented the relay according to third embodiment of the invention;
Perspective representation among Figure 11 according to the relay of third embodiment of the invention, this view is observed and is made through housing;
Figure 12 A to Figure 12 D be respectively shown in Figure 11, according to top plan view, X2 sectional view, Y2 sectional view and the upward view of the relay of third embodiment of the invention;
Schematic diagram among Figure 13 has been represented the relay according to four embodiment of the invention;
Schematic diagram among Figure 14 has been represented the relay according to fifth embodiment of the invention;
Perspective representation among Figure 15 according to the relay of sixth embodiment of the invention, this view is observed and is made through housing;
Figure 16 A has represented according to the first and second permanent magnet blocks parts of the 6th execution mode of the present invention and the figure of the relation of the position between first and second gaps to Figure 16 B;
Perspective representation among Figure 17 according to the state of relay when not having housing of seventh embodiment of the invention, in this view, the permanent magnet blocks part is expressed as transparent;
Figure 18 A to Figure 18 C be respectively shown in Figure 17, according to X2 sectional view, Y2 sectional view and the upward view of the relay of seventh embodiment of the invention;
Schematic diagram among Figure 19 has been represented being connected according to the relay of seventh embodiment of the invention and this relay and DC power supply and load circuit;
Figure 20 A has represented the electric arc that produces at gap location, the graphical presentation among Figure 20 B according to the form of the arc voltage of seventh embodiment of the invention;
Perspective representation among Figure 21 according to relay eighth embodiment of the invention, that do not have housing, among the figure, the permanent magnet blocks part is expressed as transparent;
Perspective representation among Figure 22 according to relay ninth embodiment of the invention, that do not have housing, among the figure, the permanent magnet blocks part is expressed as transparent;
Decomposition diagram among Figure 23 has been represented the relay according to tenth embodiment of the invention; And
Figure 24 is the Y2 sectional view according to the relay of tenth embodiment of the invention.
Embodiment
Hereinafter the accompanying drawing with reference to embodiment of the present invention is described.
[principle of high direct voltage control relay]
At first introduce principle according to high direct voltage control relay of the present invention.
Schematic diagram among Fig. 1 has been represented the structural principle according to relay of the present invention.Schematic diagram among Fig. 2 has represented to have the circuit arrangement of this relay.
Referring to Fig. 1 and Fig. 2, relay 10 comprises: the first switching parts 11 and second that are arranged side by side open and close parts 20; The first permanent magnet blocks part 30, it acts on first and opens and closes on the parts 11; And the second permanent magnet blocks part 40, it acts on second and opens and closes on the parts 20.
In the accompanying drawings, what the X1-X2 line referred to is the arranged direction that the first switching parts 11 and second open and close parts 20, what the Y1-Y2 line referred to is that first, second opens and closes travelling contact and the opposed facing direction of fixed contact on the parts 11 and 20, and what Z1-Z2 referred to is first, second length direction that opens and closes parts 11 and 20 upper spring terminals.
First opens and closes parts 11 comprises first fixing spring terminal 13 that has first fixed contact 12 and the first fluid spring terminal 15 with first travelling contact 14.Between first fixed contact 12 and first travelling contact 14, exist first gap 17.The direction in first gap 17 is the direction of Y1-Y2.
Second opens and closes parts 20 comprises second fixing spring terminal 23 that has second fixed contact 22 and the second fluid spring terminal 25 with second travelling contact 24.Between second fixed contact 22 and second travelling contact 24, exist second gap 27.The direction in second gap 27 is the direction of Y1-Y2.
Magnet exciting coil 16 as the excitation driver part is arranged to open and close parts 11 and 20 facing to first, second.In Fig. 2,, magnet exciting coil 16 is expressed as the Y2 side that is in switching parts 11 and 20 for the ease of the diagram expression.Figure 13 and Figure 14 also belong to same situation.
Referring to (b) part among Fig. 1, be disposed in the Z1 side of the first switching parts 11 as the first permanent magnet blocks part 30 of arc suppressor or arc arrester, and its N utmost point is in the Z2 side, the S utmost point is in the Z1 side, this piece spare has enough strong magnetic force, thereby can apply the high-intensity magnetic field 53 of Z2 direction in first gap 17.
Referring to (d) part among Fig. 1, identical with the first permanent magnet blocks part 30, be disposed in the Z1 side of the second switching parts 20 as the second permanent magnet blocks part 40 of arc suppressor or arc arrester, and its N utmost point is in the Z2 side, the S utmost point is in the Z1 side, this piece spare has enough strong magnetic force, thereby can apply the high-intensity magnetic field 54 of Z2 direction in second gap 27.
In the drawings, magnetic field 53 and 54 is referred to by the magnetic line of force.Magnetic field 53 in first, second gap 17 and 27 and 54 direction (Z2 direction) are perpendicular to the direction (Y1-Y2 direction) of first, second gap 17 and 27.
Relay 10 comprises respectively the terminals 61,62,63 and 64 from the base portion of spring terminal 13,15,23 and 25 along the projection of Z2 direction, and comprise with magnet exciting coil 16 on the terminals 120 and 121 that are connected of corresponding end, terminals 120 and 121 are along the projection of Z2 direction, thereby can be installed on the printed circuit board (PCB).
On terminals 61, indicated that with symbol and/or character or letter these terminals 61 are to be used for being connected with the positive pole of DC power supply.And understand that at terminals 63 subscripts terminals 63 will be connected with the negative pole of DC power supply with symbol and/or character or letter.Indicate that on terminals 62 these terminals 62 will be connected with an end of load circuit.Similarly, indicate that on terminals 64 these terminals 64 will be connected with the other end of load circuit.
Adopted the circuit 70 of this relay 10 to comprise: DC power supply 71, its output is up to the voltage of hundreds of volt; Load circuit 72; First interconnection circuit 73, its positive pole and load circuit 72 with DC power supply 71 couples together; And second interconnection circuit 74, its negative pole and load circuit 72 with DC power supply 71 couples together.Circuit 70 comprises the circuit part 75 that is positioned at DC power supply 71 1 sides and is positioned at the circuit part 76 of load circuit 72 1 sides that in this circuit 70, the flow direction of electric current is indicated by the arrow among Fig. 1 and Fig. 2.
First interconnection circuit 73 and second interconnection circuit 74 are formed on the side of printed circuit board (PCB) 80, and are made into the form of circuit pattern.Referring to Fig. 2, on printed circuit board (PCB) 80, be shaped on two through holes 81 and 82 in the centre of first interconnection circuit 73, their arrangement is corresponding to first two terminals 61 and 62 that open and close parts 11, and, be shaped on two through holes 83 and 84 in the centre of second interconnection circuit 74, their arrangement is corresponding to second two terminals 63 and 64 that open and close parts 20.
First interconnection circuit 73 comprises the anodal extended circuit pattern 73P from DC power supply 71, and second interconnection circuit 74 comprises from the extended circuit pattern 74P of the negative pole of DC power supply 71.First interconnection circuit 73 comprises that from the extended circuit pattern 73L of load circuit 72 1 ends, second interconnection circuit 74 comprises from the extended circuit pattern 74L of load circuit 72 other ends.Through hole 81 is formed in the place, end of circuit pattern 73P, and through hole 83 is formed in the place, end of circuit pattern 74P, and through hole 82 is formed in the place, end of circuit pattern 73L, and through hole 84 is formed in the place, end of circuit pattern 74L.
Terminals 61,62,63 and 64 are respectively inserted in through hole 81,82,83 and 84, and be welded on herein, terminals 120 and 121 are inserted into and are welded in the corresponding through hole of making on the printed circuit board (PCB) 80, so just relay 10 has been installed on the printed circuit board (PCB) 80, and can have used this relay.
When thereby direct current flows through from magnet exciting coil 16 when making that magnet exciting coil 16 is energized, first travelling contact 14 will contact with first fixed contact 12, and second travelling contact 24 will contact with second fixed contact 22, so just closed relay 10.The result is exactly, and electric current will flow according to the direction of arrow indication, thereby load circuit 72 is in running order.
When stopping to magnet exciting coil 16 power supply, first travelling contact 14 moves and breaks away from and the contacting of first fixed contact 12, and second travelling contact 24 moves and breaks away from and the contacting of second fixed contact 22.In case first travelling contact 14 moves and disengages with first fixed contact 12, will produce electric arc (arc current) at 17 places, first gap at once, similarly, break away from case second travelling contact 24 moves and the contacting of second fixed contact 22, then will produce electric arc (arc current) at 27 places, second gap at once.
With this understanding, apply high-intensity magnetic field 53 by the first permanent magnet blocks part 30 to first gap 17.Thereby, shown in (c) among Fig. 1 part, Left Hand Rule according to Fleming, on electric arc, will act on long-range navigation thatch power (Lorentz) F2 of X2 direction, thereby make electric arc as 90 indications of mark among the figure: from first gap 17, to be blown, thereby can to extinguish immediately along X2 direction deflection.In addition, owing to electric arc is blown out, also extinguishes immediately, so first travelling contact 14 and first fixed contact 12 can not be subjected to any infringement along the X2 direction from first gap 17.
Apply high-intensity magnetic field 54 by the second permanent magnet blocks part 40 to second gap 27.Thereby, shown in (e) among Fig. 1 part,, on electric arc, will act on the long-range navigation thatch power F1 of X1 direction according to the Left Hand Rule of Fleming, thereby make electric arc as 91 indications of mark among the figure: from second gap 27, to be blown, thereby can to extinguish immediately along X1 direction deflection.In addition, owing to electric arc is blown out, also extinguishes immediately, so second travelling contact 24 and second fixed contact 22 can not be subjected to any infringement along the X1 direction from second gap 27.
Move apart first fixed contact 12 when first travelling contact 14 and disengage with it and when second travelling contact 24 moves apart second fixed contact 22 and disengages with it, first interconnection circuit 73 and the part place of second interconnection circuit 74 in relay 10 are disconnected simultaneously, thereby, in electric current 70, the circuit part 75 that is positioned at DC power supply 71 1 sides is separated with the circuit part 76 that is positioned at load circuit 72 1 sides, has realized independent fully mutually thus.The result is exactly, even earth potential is unsettled, also can not carry any electric current to load circuit 72.
In addition because travelling contact 14,24 and fixed contact 12,22 can not be damaged, so, even relay 10 through after repeatedly working, descending can not appear in its performance yet, thereby relay 10 has the very long available work life-span.
Schematic diagram among Fig. 3 has been represented the another kind of structure according to relay of the present invention.
Referring to Fig. 3, the difference of relay 10X and relay 10 shown in Figure 1 is: the first permanent magnet blocks part 30X and the second permanent magnet blocks part 40X are oriented to and make their the S utmost point be in the Z2 side, and the N utmost point then is in the Z1 side; Understand that at terminals 61 subscripts these terminals 61 will link to each other with the negative pole of power supply; And understand that at terminals 63 subscripts these terminals 63 will link to each other with the positive pole of power supply.Applied magnetic field 53X and 54X respectively to first gap 17 and second gap 27, the direction in two magnetic fields all is the Z1 direction.
The circuit 70X that has been equipped with the relay 10X of this structure is with the difference of circuit 70 shown in Figure 1: the directed situation with DC power supply 71 shown in Figure 1 of the terminals of the DC power supply 71X that it is included is opposite.
When direct current make through magnet exciting coil 16 (see figure 2)s magnet exciting coil 16 when electric, mutually facing to contact 12 and 14 and contact 22 and 24 be in contact with one another, thereby with relay 10X closure.The result is exactly that electric current can flow by the direction of arrow indication among Fig. 3, makes that load circuit 72 is in running order.
When stopping to magnet exciting coil 16 power supply, first travelling contact 14 moves and breaks away from and the contacting of first fixed contact 12, and second travelling contact 24 moves and breaks away from and the contacting of second fixed contact 22.In case first travelling contact 14 moves and disengages with first fixed contact 12, will produce electric arc (arc current) at 17 places, first gap at once, similarly, in case second travelling contact 24 moves apart second fixed contact 22 and disengages, will produce electric arc (arc current) at 27 places, second gap at once.
Under this condition, apply high-intensity magnetic field 53X to first gap 17 by the first permanent magnet blocks part 30X.Thereby, shown in (c) among Fig. 3 part,, on electric arc, will act on the long-range navigation thatch power F2 of X2 direction according to the Left Hand Rule of Fleming, thereby make electric arc as 90 indications of mark among the figure: to be blown from first gap 17 along X2 direction deflection, thereby can to extinguish immediately.
Apply high-intensity magnetic field 54X by the second permanent magnet blocks part 40X to second gap 27.Thereby, shown in (e) among Fig. 3 part,, on electric arc, will act on the long-range navigation thatch power F1 of X1 direction according to the Left Hand Rule of Fleming, thereby make electric arc as 91 indications of mark among the figure: from second gap 27, to be blown, thereby can to extinguish immediately along X1 direction deflection.
[first execution mode]
Perspective representation among Fig. 4 according to the small size high direct voltage control relay 10A of first embodiment of the invention, this view is observed and is made through 110 couples of relay 10A of housing.
Fig. 5 A is respectively top plan view (Z1 side), X2 sectional view, the Y2 sectional view of relay 10A shown in Figure 4 to Fig. 5 D; And upward view (Z2 side).In these accompanying drawings, come the corresponding element of element among mark and Fig. 1 with identical number designation, and omit description these elements.
Relay 10A is the form of implementation of the relay 10 of principle structure shown in Figure 1.Relay 10A has: first opens and closes parts 11 and second opens and closes parts 20, and on the Y2 of base portion 100 side, two open and close parts lays respectively at X2 and X1 side; Yoke 102, it is arranged in the middle place of base portion 100 according to vertical (uprightly) attitude; Be arranged on armature 103 and the plug-in unit 104 located in the middle of the base portion 100; And magnet exciting coil 105, it is installed on the Y1 side of base portion 100, and is fixed on here.Relay 10A by housing 110 shades, and housing is a rectangular shape.As hereinafter introducing, stretch out some terminals from the bottom surface of base portion 100.The width of relay 10A be W, length be L, highly for H.Magnet exciting coil unit 105, yoke 102, armature 103 and plug-in unit 104 have constituted the excitation driver part.Width W, length L and height H all are about 20mm to 30mm.Relay 10A is undersized, and its terminals are positioned on (base portion 100) bottom surface, and this relay can be installed to printed circuit board (PCB) 80 enterprising enforcements usefulness.
First opens and closes parts 11 has the first paired fixing spring terminal 13 and the first fluid spring terminal 15, these two terminals be arranged on the Y1-Y2 direction mutually facing to.Second opens and closes parts 20 has the second paired fixing spring terminal 23 and the second fluid spring terminal 25, these two terminals be arranged on the Y1-Y2 direction mutually facing to.
Magnet exciting coil unit 105 has bobbin 107 and is twining the magnet exciting coil 16 of bobbin 107.Armature 103 is that letter is L shaped, and it is being supported by yoke 102, and armature 103 has horizontal component, and one end is facing to the electrode of 105 upper ends, magnet exciting coil unit.Armature 103 has vertical component, and the plug-in unit of being made by insulating resin 104 is connected on this vertical component.The end of plug-in unit 104 opposite sides is connected to all right one way or the other spring terminal 15 and 25 each the middle interconnecting pieces of moving and divides.
Housing 110 is to be made by the heat-resisting material of height, and this material for example is thermosetting resin (for example epoxy resin or a phenolic resins).
Housing 110 comprises top board parts 111.Utilize insert molding technology with first, second permanent magnet blocks part 30 and 40 on the Y2 sidepiece of top board parts 111 inner surfaces.First, second permanent magnet blocks part 30 and 40 is arranged to: when housing 110 was connected on the base portion 110, they laid respectively at the next-door neighbour top (being positioned at the Z1 side in gap) of first, second gap 17 and 27.
First, second permanent magnet blocks part 30 and 40 is samarium-cobalt magnets, and its length (size on the X1-X2 direction) is about 7mm, and width (size on the Y1-Y2 direction) is 5mm, and between the 3mm, this magnet is a kicker magnet to thickness (size on the Z1-Z2 direction) at 2mm.First, second permanent magnet blocks part 30 and 40 has following characteristic:
Residual magnetic flux density Br:1.07 is to 1.15 teslas;
Coercive force H CB: 597 to 756kA/m;
Ceiling capacity product (BH) max:199 is to 247kJ/m 3And
Coercive force H CJ: 637 to 1432kA/m.
Than neodium magnet, samarium-cobalt magnet has better thermal endurance, and is not easy to be subjected to thermal demagnetization.First, second permanent magnet blocks part 30 and 40 is oriented to and makes their the S utmost point be positioned at the Z1 side, and the N utmost point is positioned at the Z2 side.
The terminals 61,62,63 and 64 that stretch out from the base portion of spring terminal 13,15,23 and 25 stretch out along the Z2 direction from the bottom surface of base portion 100 respectively.In addition, the terminals 120 that are connected with the corresponding end of magnet exciting coil 16 and 121 stretch out along the Z2 direction from the bottom surface of base portion 100.
Referring to Fig. 5 D, for each terminals 61-64 is provided with the indication that waits such as " positive source ", the letter during these are indicated is formed by resin molded on the bottom surface of base portion 100.Utilizing indication information " positive source " to indicate terminals 61 will be connected with the positive pole of power supply.Utilizing indication information " power cathode " to indicate terminals 63 will be connected with the negative pole of power supply.Utilizing indication " load " to indicate terminals 62 will link to each other with an end of load circuit.And utilizing indication " load " to indicate terminals 64 will be connected with the other end of load circuit.As alternative, also can utilize and directly be printed on housing 110 side plate parts 112 or 113 (referring to Fig. 5 A and Fig. 5 C) surface or the indication information on top board parts 111 upper surfaces indicates these and is connected, perhaps can indicate, on label, print indication information by attached label on housing 110.
Identical with situation illustrated in figures 1 and 2, relay 10A is installed to printed circuit board (PCB) 80 enterprising enforcements and is used, it is set on first interconnection circuit 73 and second interconnection circuit 74, each terminals 61-64 is inserted into and is welded among the through hole 81-84, and terminals 120 and 121 are inserted into and are welded in the corresponding through hole.As alternative, can adopt L shaped wiring to bring in the terminals 61-64 of replacement from the downward straight line projection in the bottom surface of base portion 100, thereby, by L shaped terminals being welded on the corresponding pad on the printed circuit board (PCB), just relay 10A can be installed on the printed circuit board (PCB) with the form of mounted on surface.
With this understanding, magnet exciting coil 16 does not have any polarity, thereby does not indicate the sense of current in the magnet exciting coil 16.The result is exactly to have reduced the restrictive condition to the circuit that drives relay 10A.
When magnet exciting coil 16 not when electric, relay 10A is in Fig. 4 and Fig. 5 A to the state shown in Fig. 5 D, under this state, first, second travelling contact 14 and 24 disengages with first, second fixed contact 12 and 22 respectively.
When direct current when terminals 120 and 121 flow through from magnet exciting coil 16, magnet exciting coil unit 105 is encouraged, thereby attracts the horizontal component of armature 103, and with its adhesive to magnet exciting coil unit 105.Because the This move of armature 103, first, second fluid spring terminal 15,25 is squeezed on the Y2 direction, makes first, second travelling contact 14,24 realize contacting with first, second fixed contact 12 and 22 respectively thus.So closed relay 10A.The result is exactly that electric current will flow according to the direction of arrow indication among Fig. 1, thereby makes load circuit 72 carry out work.
When stopping to magnet exciting coil 16 power supplies, first travelling contact 14 moves and breaks away from and the contacting of first fixed contact 12, and meanwhile, second travelling contact 24 moves and breaks away from and the contacting of second fixed contact 22, thereby, in first gap 17 and second gap 27, will produce electric arc.Travelling contact 14,24 and fixed contact the 12, the 22nd, thin plate-like, their apparent surface is spherical.Thereby electric arc is to produce between the center of the center of travelling contact 14 and 24 and fixed contact 12 and 22.But shown in Fig. 5 A, utilize the first permanent magnet blocks part 30 magneticaction, will produce long-range navigation thatch power F2 according to the Left Hand Rule of Fleming, electric arc in first gap 17 is blown along X2 direction deflection as 90 indications of mark among the figure, thereby can extinguish rapidly by this long-range navigation thatch power F2; And, utilize the second permanent magnet blocks part 40 magneticaction, will produce long-range navigation thatch power F1 according to the Left Hand Rule of Fleming, electric arc in second gap 27 is blown along X1 direction deflection as 91 indications of mark among the figure, thereby can extinguish rapidly by this long-range navigation thatch power F1.
Graphical presentation among Fig. 6 be that 400VDC, electric current are under the situation of 10A at voltage, the waveform when electric current is turned off in the circuit.
Shown in the waveform I among Fig. 6, owing to the electric arc in the gap 17,27 is extinguished rapidly, so the electric current of the circuit 70 of flowing through can turn-off-for example be turn-offed in 938 μ s fast.In addition, prevented to travelling contact 14 and 24 and fixed contact 12 and 22 cause damage, thereby even passed through repeatedly off-on operation, relay 10A also can have very long working life, and performance does not descend.
As label 90 indications, the electric arc that produces in first gap 17 touches the side plate parts 112 of the housing 110 of X2 side, and as label 91 indications, the electric arc that produces in second gap 27 touches the side plate parts 113 of the housing 110 of X1 side.But, because housing 110 is to make with high heat-resisting material, so the surface, inside of side plate parts 112 and 113 can not be damaged.In addition, the fused mass in the electric arc (melted material) can adhere to and deposit on the surface, inside of side plate parts 112 and 113.But because a segment distance A has been left with gap 17,27 respectively in the surface, inside of side plate parts 112,113, this distance is about 2mm to 4mm, impacts so can not open and close parts 11 and 20 to first, second, thereby can not go wrong.
If electric arc is not deflected, then electric arc will be stayed in gap 17 and 27, and exist herein, thereby it is badly damaged to make that travelling contact 14,24 and fixed contact 12,22 are subjected to, and be fallen by scorification.In the case, the electric current that flows through from circuit 70 is represented that by the waveform II among Fig. 6 in the drawings, the part of representing with IIa among the waveform II demonstrates travelling contact 14,24 and fixed contact 12,22 has been fallen by scorification.
Because first, second permanent magnet blocks part the 30, the 40th, separately, so, with first, second permanent magnet blocks part 30 and 40 is combined into the situation of single permanent magnet blocks part (referring to Figure 10, hereinafter will be described this situation) compare, design separately can reduce the volume of permanent magnet material, thereby can reduce material cost.
In addition, because the permanent magnet blocks part 30 and 40 that causes electric arc to be blown out is separately positioned on the top (being positioned at the Z1 side) of gap 17 and 27, so, can need not to consider under the prerequisite of permanent magnet blocks part 30 and 40 that the design to as the magnet exciting coil unit 105 of relay 10A excitation driver part is optimized.
To introduce the remodeling form of the fixed structure of housing 110, permanent magnet blocks part 30 and 40 and two permanent magnet blocks parts 30 and 40 below according to this execution mode.
Can adopt ceramic shell member and thermosetting resin, utilize insert molding technology to make housing 110, resin wherein for example is ABS (acrylonitrile-butadiene-styrene (ABS)) resin, PBT (polybutylene terephthalate) resin or LCP (liquid crystal polymer) resin.In addition, available epoxy or phenolic resins are made high-temperature part on the housing 110-the be part facing to gap 17 and 27 on side plate parts 112 and 113.
First, second permanent magnet blocks part 30 and 40 can also be neodium magnet or ferrimagnet.
As shown in Figure 7, first, second permanent magnet blocks part 30 and 40 fixed structure can also be like this: have depression 115 on the upper surface of housing 110A top board parts, permanent magnet blocks part 30,40 is pressed onto in the depression 115.As alternative, also can utilize two-sided tape that permanent magnet blocks part 30,40 is bonded on the lower surface of housing top board parts, perhaps can utilize bonding agent permanent magnet blocks part 30,40 to be bonded on the top board parts of housing, perhaps, can utilize adhesive permanent magnet blocks part 30,40 to be fixed on the top board parts of housing, perhaps, permanent magnet blocks part 30,40 can be press fit in the correspondence depression of making on the housing, so that temporarily assemble, and then utilize bonding agent that it is bonded in the corresponding depression.
[second execution mode]
Fig. 8 A is respectively X2 sectional view, Y2 sectional view and a upward view (Z2 side) according to the relay 10B of second embodiment of the invention to Fig. 8 C.
Relay 10B comprises two relay main body 130X1 and 130X2, and they are combined into one, and is arranged side by side on the X1-X2 of housing 110B direction.The structure of two relay main body 130X1, the 130X2 all structure with relay main body 130 shown in Figure 9 is identical.
Housing 110B comprises that the relay main body accommodates parts 115X1, and it is used to accommodating relay main body 130X1, and housing 110B comprises that also the relay main body accommodates parts 115X2, and it is used to accommodating relay main body 130X2.The relay main body is accommodated parts 115X1 and 115X2 and is formed on the X1-X2 direction and is arranged side by side.First, second permanent magnet blocks part 30 and 40 is respectively fixed to the relay main body and accommodates on the top board parts 111B2 of parts 115X2 and the top board parts 111B1 that the relay main body is accommodated parts 115X1.
Referring to Fig. 9, relay main body 130 comprises: on base portion 100C, be positioned at the switching parts 11C of its Y2 side; Yoke 102C, it is set on the centre position of base portion 100C, and is in vertical (uprightly) state; Be arranged on the armature 103C and the plug-in unit 104C that locate in the middle of the base portion 100C; Magnet exciting coil unit 105C, it is installed on the Y1 side of base portion 100C, and is fixed on herein; And the terminals 61C and 62C and the terminals 120C that stretch out from the bottom surface of base portion 100C.
Open and close the fluid spring terminal 15C that parts 11C has the fixing spring terminal 13C that has fixed contact 12C and has travelling contact 14C.Fixing spring terminal 13C and fluid spring terminal 15C be arranged to mutually facing to, thereby make fixed contact 12C and travelling contact 14C across the gap 17C that forms between them mutually facing to.
Relay main body 130X1 is included in the relay main body and accommodates among the parts 115X1, and relay main body 130X2 is included in the relay main body and accommodates among the parts 115X2.Relay main body 130X2 has the first gap 17B (the gap 17C among corresponding Fig. 9), and relay main body 130X1 has the second gap 27B (corresponding gap 17C shown in Figure 9).First, second permanent magnet blocks part 30 and 40 all is oriented to and makes the N utmost point be in the Z2 side, and the S utmost point is in the Z1 side, and act on two gap 17B and magnetic field on the 27B have identical towards.Magnet exciting coil among the magnet exciting coil unit 105B1 of relay main body 130X1, connected with the magnet exciting coil among the magnet exciting coil unit 105B2 of relay main body 130X2.
Terminals 61B and 62B (corresponding respectively terminals 61C and 62C shown in Figure 9), terminals 63B and 64B (corresponding respectively terminals 61C and 62C shown in Figure 9) and terminals 120B and 121B (corresponding terminals 120C shown in Figure 9) are connected with corresponding end on the magnet exciting coil that is connected in series, and these terminals stretch out downwards from the base portion 100B of relay 10B.Referring to Fig. 8 C, on the bottom surface of base portion 100B, be provided with the indication letter.These letters have indicated terminals 61B and will be connected with the positive pole of power supply.Also having indicated terminals 63B will be connected with the negative pole of power supply.And having indicated terminals 62B will be connected with an end of load circuit.Also having indicated terminals 64B will be connected with the other end of load circuit.
Identical with situation illustrated in figures 1 and 2, relay 10B is installed on the printed circuit board (PCB) 80 and is used, it is set on first interconnection circuit 73 and second interconnection circuit 74, and its terminals 61B-64B is inserted into and is welded among the through hole 81-84, and terminals 120B and 121B are inserted into and are welded in the corresponding through hole.
When relay 10B worked, relay main body 130X1 and relay main body 130X2 moved simultaneously.Identical with the situation of the relay 10A of above-mentioned first execution mode, in the process of relay 10B work, all blown out to side plate parts 112B and 113B at the electric arc of gap 17B and the generation of 27B place, thereby can be extinguished rapidly to extrinsic deflection.Thereby, can avoid travelling contact (the travelling contact 14C among corresponding Fig. 9) to each relay main body 130X1 and 130X2 and fixed contact (correspondence the fixed contact 12C among Fig. 9) to cause damage, make relay 10B have long useful life.
[the 3rd execution mode]
Schematic diagram among Figure 10 has been represented the relay 10D according to third embodiment of the invention.
Figure 11 is the perspective view of relay 10D, and this view is observed and made relay 10D through housing 110D.
Figure 12 A is respectively vertical view cutaway drawing (Z1 side), X2 sectional view, the Y2 sectional view of relay 10D to Figure 12 D; And upward view (Z2 side).
First, second permanent magnet blocks part 30 and 40 in utilizing common single permanent magnet blocks part 45 replacements relay 10 shown in Figure 1, the relay 10D and the relay shown in Figure 1 10 of the 3rd execution mode have identical construction.
Permanent magnet blocks part 45 is elongated rectangular shape, strides across gap 17 and 27 and extends, and the N utmost point of this permanent magnet is in the Z2 side, and the S utmost point is in the Z1 side.Since this structure can to gap 17 and 27 apply identical towards magnetic field, be feasible so adopt the design of monolithic permanent magnet blocks part 45.
In actual conditions, to shown in Figure 12 D, permanent magnet blocks part 45 is set on the lower surface of top board parts 111D of housing 110D as Figure 12 A, thereby is disposed immediately in the top of gap 17 and 27.Identical towards the action of a magnetic field on gap 17 and 27.
Identical with the situation of the relay 10A of above-mentioned first execution mode, respectively as label 90D among Figure 12 A and 91D indication, when relay 10B worked, the electric arc that 17 and 27 places produce in the gap was all blown out to side plate parts 112D and 113D to extrinsic deflection, thereby can be extinguished rapidly.Thereby, can avoid to the travelling contact 14 of relay 10D and 24 and fixed contact 12 and 22 cause damage, make relay 10 have long useful life.
Compare with the above-mentioned design of the second permanent magnet blocks part 40 with the branch first permanent magnet blocks part 30 that is arranged, adopt the design of monolithic permanent magnet blocks part 45 can reduce number of components and parts, and eliminated the processing cost that permanent magnet is divided into piece spare.
[the 4th execution mode]
Schematic diagram among Figure 13 has been represented the relay 10E according to four embodiment of the invention.
Relay 10E comprises corresponding to two of first interconnection circuit 73 and opens and closes parts 200 and 201 and open and close parts 210 and 211 corresponding to two of second interconnection circuit 74, this relay has four and opens and closes parts 200,201,210 and 211, and these parts are incorporated in the same housing (not shown).Be in first, second interconnection circuit 73 and 74 each the bifurcated parallel circuit parts of centre if the printed circuit pattern of printed circuit board (PCB) 80 has, then this relay 10E just can be installed on the parallel circuit part and be used.
Housing comprises wall components 220, and it will open and close parts 201 and open and close parts 210 separately.For opening and closing parts 200,201,210 and 211, each is provided with permanent magnet blocks part (not shown).The magnetic pole of permanent magnet blocks part is oriented to like this: making that act on the direction that opens and closes the magnetic field of parts 200 and 211 on each is the paper that enters into Figure 13, is to leave the paper of Figure 13 and act on the direction that opens and closes the magnetic field of parts 201 and 210 on each.
Blown out along X2 and X1 direction respectively at the electric arc that opens and closes the generation of parts 200 and 211 places, and be blown to the inner surface of housing.Blown out along X1 direction and X2 direction respectively at the electric arc that opens and closes the generation of parts 201 and 210 places, and be blown to wall components 220.
Can adopt the extension size to be enough to stride across the elongated permanent magnet blocks part that opens and closes parts 201 and 210 replaces facing to two permanent magnet blocks parts that open and close parts 201 and 210.
According to the design of this relay 10E, can reduce the electric current in each switching parts 200,201,210 and 211.
[the 5th execution mode]
Schematic diagram among Figure 14 has been represented the relay 10F according to fifth embodiment of the invention.
The difference of relay 10F in this execution mode and relay 10E shown in Figure 13 (the 4th execution mode) is: replaced the wall components 220 among Figure 13, be provided with the wall components 230 that to open and close parts 200 and to open in 201 minutes, and be provided with the wall components 231 that to open and close parts 210 and to open in 211 minutes; Its difference also is: for the magnetic pole of the switching parts 200,201,210 of correspondence and the 211 permanent magnet blocks parts that are provided with is oriented to like this: acting on each direction that opens and closes the magnetic field on parts 200,201,210 and 211 all is the paper that enters into Figure 14.
Blown out along the X2 direction at the electric arc that opens and closes the generation of parts 200 places, and blowed to the inner surface of housing.Blown out along the X2 direction at the electric arc that opens and closes the generation of parts 201 places, and blowed to wall components 230.Blown out along the X1 direction at the electric arc that opens and closes the generation of parts 210 places, and blowed to wall member 231.Blown out along the X1 direction at the electric arc that opens and closes the generation of parts 211 places, and blowed to the inner surface of housing.
Can adopt the extension size to be enough to stride across the elongated permanent magnet blocks part that opens and closes parts 200 and 201 replaces facing to the permanent magnet blocks part that opens and closes parts 200 and 201.And can adopt and extend size and be enough to stride across the elongated permanent magnet blocks part that opens and closes parts 210 and 211 and replace facing to two permanent magnet blocks parts that open and close parts 210 and 211.As alternative, can adopt the extension size to be enough to stride across the elongated permanent magnet blocks part that opens and closes parts 200,201,210 and 211 and replace facing to the permanent magnet blocks part that opens and closes parts 200,201,210 and 211.
Identical with the above-mentioned relay 10E in the 4th execution mode, according to the design of this relay 10F, reducing to flow through, each opens and closes the electric current of parts 200,201,210 and 211.
[the 6th execution mode]
Figure 15 has represented the relay 10G according to sixth embodiment of the invention.
The difference of relay 10G in this execution mode and relay 10A shown in Figure 4 (first execution mode) is: replaced first, second permanent magnet blocks part 30 and 40 with first, second permanent magnet blocks part 30G and 40G.
Figure 16 A and Figure 16 B have represented the position relation between first, second permanent magnet blocks part 30G and 40G and first, second gap 17 and 27.
The diameter d of each fixed contact 12,22 all is 3mm.
First, second permanent magnet blocks part 30G and 40G are flat cuboids, and its length l is that 6.6mm (X1-X2 direction size), width w are 5mm (Y1-Y2 direction size).Length l is greater than the diameter of fixed contact 12 and 22 (l＞d), and be approximately the twice of fixed contact 12 and 22 diameter d.
The first permanent magnet blocks part 30G is facing to first gap 17, and is positioned at the next-door neighbour top (being positioned at the Z1 side) in first gap 17.The center 30GC of the first permanent magnet blocks part 30G on the X1-X2 direction with respect to the off-centring of fixed contact 12 certain size e (being about 0.8mm), the direction of skew is X2 direction (on this direction, the electric arc that first gap 17 is produced is subjected to blow).Thereby, compare with situation about aligning through the straight line (shown in the double dot dash line among Figure 16 A) at fixed contact 12 centers on the Z1-Z2 direction with the first permanent magnet blocks part 30G being arranged to make its center 30GC, the length a1 (being about 4.1mm) that the first permanent magnet blocks part 30G goes up with respect to fixed contact 12 centers upwardly extending part in X2 side has increased, and the length b1 (being about 2.6mm) with respect to X2 lateral edges upwardly extending part in X2 side of fixed contact 12 on the first permanent magnet blocks part has also increased.
In addition, in the first permanent magnet blocks part 30G, the length a1 (being about 4.1mm) that is in the part of X2 side with respect to fixed contact 12 centers is greater than the length a2 (being about 2.5mm) that is in the part of X1 side with respect to fixed contact 12 centers, i.e. a1＞a2; And with respect to the length b1 (being about 2.6mm) of X2 lateral edges extension on the X2 direction of fixed contact 12 greater than the length b2 (being about 1.0mm) with respect to X1 lateral edges upwardly extending part of fixed contact 12, i.e. b1＞b2 in X1 side.
Thereby, compare with situation about on the Z1-Z2 direction, aligning with the first permanent magnet blocks part 30G being arranged to make its center 30GC through the straight line at fixed contact 12 centers, the space that the magnetic field that is applied by the first permanent magnet blocks part 30G is covered with, with respect to first gap 17 at the extension yardstick on the X2 direction greater than the extension yardstick on the X1 direction.That is to say that the limited magnetic field that the first permanent magnet blocks part 30G produces acts on the electric arc efficiently.
Therefore, when the electric arc that produces in the gap 17 under the magneticaction of the first permanent magnet blocks part 30G during to the deflection of X2 direction (referring to) as the label 90G among Figure 15, the first permanent magnet blocks part magnetic field energy that 30G produces acts on the deflection electric arc more efficiently, thereby, compare with the situation of relay 10A shown in Figure 4 (first execution mode), can blow out electric arc satisfactorily, and it is extinguished rapidly.
The second permanent magnet blocks part 40G is facing to second gap 27, and is positioned at the next-door neighbour top (being positioned at the Z1 side) in second gap 27.The center 40GC of the second permanent magnet blocks part 40G on the X1-X2 direction with respect to the off-centring of fixed contact 22 certain size e (being about 0.8mm), the direction of skew is X1 direction (on this direction, the electric arc that second gap 27 is produced is subjected to blow).Thereby, with the second permanent magnet blocks part 40G is arranged to make its center 40GC and compares in the situation (shown in the double dot dash line among Figure 16 A) that aligns through the straight line at fixed contact 22 centers on the Z1-Z2 direction, the length a1 (being about 4.1mm) that the second permanent magnet blocks part 40G goes up with respect to fixed contact 22 centers upwardly extending part in X1 side has increased, and the length b1 (being about 2.6mm) with respect to X1 lateral edges upwardly extending part in X1 side of fixed contact 22 on the second permanent magnet blocks part has also increased.
In addition, on the second permanent magnet blocks part 40G, be in the length a1 (being about 4.1mm) of the part of X1 side, be in the length a2 (being about 2.5mm) of the part of X2 side, i.e. a1＞a2 greater than center with respect to fixed contact 22 with respect to fixed contact 22 centers; And with respect to the length b1 (being about 2.6mm) of X1 lateral edges extension on the X1 direction of fixed contact 22, greater than the length b2 (being about 1.0mm) with respect to X2 lateral edges upwardly extending part of fixed contact 22, i.e. b1＞b2 in X2 side.
Thereby, compare with situation about on the Z1-Z2 direction, aligning with the second permanent magnet blocks part 40G being arranged to make its center 40GC through the straight line at fixed contact 22 centers, the space that the magnetic field that is applied by the second permanent magnet blocks part 40G is covered with respect to second gap 27 at the extension yardstick on the X1 direction greater than the extension yardstick on the X2 direction.That is to say that the limited magnetic field that the second permanent magnet blocks part 40G produces acts on the electric arc efficiently.
Therefore, when the electric arc that produces in the gap 27 under the action of a magnetic field of the second permanent magnet blocks part 40G during to the deflection of X1 direction (referring to) as the label 91G among Figure 15, the second permanent magnet blocks part magnetic field energy that 40G produces more effectively acts on the deflection electric arc, thereby, compare with the situation of relay 10A shown in Figure 4 (first execution mode), can blow out electric arc satisfactorily, and it is extinguished rapidly.
[the 7th execution mode]
Perspective representation among Figure 17 according to the relay 10H of seventh embodiment of the invention, do not express housing 110H (seeing Figure 18 A and 18B) among the figure.For ease of describing, in Figure 17, first, second permanent magnet blocks part 30H and 40H are expressed as transparent.
Figure 18 A is respectively X2 sectional view, Y2 sectional view and the upward view (Z2 end view) of relay 10H shown in Figure 17 to Figure 18 C.
Schematic among Figure 19 show relay 10H and with being connected of DC power supply 71 and load circuit 72.
[structure of relay 10H]
Relay 10H comprises the first relay main body 250X2 and the second relay main body 250X1, and two relay main bodys are arranged side by side in housing 110H along the X1-X2 direction, lay respectively at X2 side and X1 side.
To Figure 18 C and Figure 19, the first relay main body 250X2 comprises referring to Figure 17, Figure 18 A: first opens and closes parts 11HX2, and it is positioned at the Y2 side on base portion 100HX2; Yoke 102HX2, it is arranged in the middle place of base portion 100HX2 according to vertical (uprightly) attitude; Be arranged on the armature 103HX2 and the plug-in unit 104HX2 that locate in the middle of the base portion 100HX2; Magnet exciting coil unit 105HX2, it is mounted and is fixed on the Y1 side of base portion 100HX2; And terminals 61H, 62H and terminals 120H, these terminals stretch out from the bottom surface of base portion 100HX2.First opens and closes parts 11HX2 has first gap, and it has first gap portion 261 and second gap portion 262.
First opens and closes parts 11HX2 comprises: first, second fixing spring terminal 251X2 and 252X2, and they are disposed on the X1-X2 direction; Movable elastic component 255X2, its size is enough to be covered with first, second fixing spring terminal 251X2 and 252X2.Fixed contact 252X2 and 254X2 are respectively fixed on first, second fixing spring terminal 251X2 and the 253X2.The lower end of movable elastic component 255X2 is fixed on the base portion 100HX2 by the form according to bending.Travelling contact 256X2 and 257X2 are fixed on the fluid spring terminal 255X2.
Fixed contact 252X2 and travelling contact 256X2 across first gap portion that forms between them mutually facing to.Fixed contact 254X2 and travelling contact 257X2 across second gap portion 262 that forms between them mutually facing to.
The structure of the second relay main body 250X1 is identical with the structure of above-mentioned relay main body 250X2, and it comprises that second opens and closes parts 11HX1.Second opens and closes parts 11HX1 comprises second gap, and second gap comprises third space part 263 and the 4th gap portion 264.
Second opens and closes parts 11HX1 has third space part 263, and it is between fixed contact 252X1 and travelling contact 256X1, and second opens and closes parts also has the 4th gap portion 264, and it is between fixed contact 254X1 and travelling contact 257X1.Terminals 63H and 64H and terminals 121H stretch out from the bottom surface of base portion 100HX2.
In Figure 19, those are referred to identical number designation with the first relay main body 250X2 components identical among the second relay main body 250X1, but add suffix " X1 ", rather than suffix " X2 " at Figure 17.
Magnet exciting coil 16HX1 among the magnet exciting coil unit 105HX1 of magnet exciting coil 16HX2 among the magnet exciting coil unit 105HX2 of the first relay main body 250X2 and the second relay main body 250X1 is being connected.
First, second permanent magnet blocks part 30H and 40H are rectangular shape, and they are fixed on the top board parts 111H of housing 110H.The first permanent magnet blocks part 30H is positioned in the Z1 side of first gap portion 261 and second gap portion 262, thereby can extend across first, second gap portion 261 and 262.The second permanent magnet blocks part 40H is positioned in the Z1 side of the 3rd, the 4th gap portion 263 and 264, thereby can extend across the 3rd, the 4th gap portion 263 and 264.
First, second permanent magnet blocks part 30H and 40H are oriented to that the N utmost point that makes them is positioned at the Z2 side, the S utmost point is positioned at the Z1 side.As shown in figure 19, on first to the 4th gap portion 261-264, acting on oriented phase magnetic field together.
Referring to Figure 18 C, on the bottom surface of each base portion 100HX1 and 100HX2, be provided with the indication letter.These indications have indicated terminals 61H and will be connected with the positive pole of power supply.And indicated terminals 63H and will be connected with the negative pole of power supply.Also having indicated terminals 62H will be connected with an end of load circuit.And indicated terminals 64H and will be connected with the other end of load circuit.
Referring to Figure 18 B, housing 110H has partition component 115H in the centre position.This partition component for example is to be made by heat-resisting ceramic material.Partition component 115H is positioned between the first relay main body 250X2 and the second relay main body 250X1, thereby first, second relay main body 250X2 and 250X1 branch are opened.
[installation of relay 10H and work]
Referring to Figure 19, adopted the circuit 70 of relay 10H to comprise: DC power supply 71, its output is up to the voltage of hundreds of volt; Load circuit 72; First interconnection circuit 73, its positive pole and load circuit 72 with DC power supply 71 couples together; And second interconnection circuit 74, its negative pole and load circuit 72 with DC power supply 71 couples together.First interconnection circuit 73 and second interconnection circuit 74 are formed on the side of printed circuit board (PCB) 80H, and are made into the form of circuit pattern.
First interconnection circuit 73 comprises from the anodal extended circuit pattern 73P of DC power supply 71 and from the extended circuit pattern 73L of load circuit 72 1 ends.Second interconnection circuit 74 comprises from the extended circuit pattern 74P of the negative pole of DC power supply 71 and from the extended circuit pattern 74L of the other end of load circuit 72.
Relay 10H with above-mentioned structure is installed on the printed circuit board (PCB) 80H, and, terminals 61H be inserted into and welding position to the through hole that is arranged in circuit pattern 73P end place, terminals 63H is inserted into and is welded in place in the through hole at place, circuit pattern 74P end, terminals 62H is inserted into and is welded in place in the through hole at place, circuit pattern 73L end, and terminals 64H is inserted into and is welded in place in the through hole at place, circuit pattern 74L end.That is to say that the first relay main body 250X2 is set at the centre of first interconnection circuit 73, the second relay main body 250X1 is set at the centre of second interconnection circuit 74. Terminals 120H and 121H also are inserted into and are welded in the corresponding through hole of making on the printed circuit board (PCB) 80H.
When direct current when terminals 120H and 121H flow through from magnet exciting coil 16HX2 and 16HX1, magnet exciting coil unit 105HX2 and 105HX1 are encouraged simultaneously.The result is exactly, and in the first relay main body 250X2, the horizontal component of armature 103HX2 is attracted, and by adhesive to magnet exciting coil unit 105HX2.Because the This move of armature 103HX2, movable elastic component 255X2 is squeezed on the Y2 direction, makes travelling contact 256X2 realize contacting with fixed contact 252X2 and 254X2 respectively with 257X2 thus.The so closed first relay main body 250X2.In the second relay main body 250X1, the horizontal component of armature 103HX1 is attracted, and by adhesive to magnet exciting coil unit 105HX1.Because the This move of armature 103HX1, movable elastic component 255X1 is squeezed on the Y2 direction, makes travelling contact 256X1 realize contacting with fixed contact 252X1 and 254X1 respectively with 257X1 thus.The so closed second relay main body 250X1.
The result is exactly that electric current flows according to arrow shown in Figure 19, makes load circuit 72 carry out work thus.In movable elastic component 255X2, electric current from travelling contact 25,7X2 one effluent to travelling contact 25,6X2 one side.In movable elastic component 255X1, electric current from travelling contact 25,7X1 one effluent to travelling contact 25,6X1 one side.
When stopping to magnet exciting coil 16HX2 and 16HX1 power supply, travelling contact 256X2 moves with 257X2 and breaks away from and the contacting of fixed contact 252X2 and 254X2, meanwhile, travelling contact 256X1 moves with 257X1 and breaks away from and the contacting of fixed contact 252X1 and 254X1, thereby, in first to the 4th gap portion 261-264, all produced electric arc.
In the case, electric arc in first gap portion 261 blows out to the side plate parts 112H of housing 110H along X2 direction deflection as 271 indications of mark among the figure, thereby can extinguish rapidly, electric arc in second gap portion 262 blows out to the partition component 115H of housing 110H along X1 direction deflection as 272 indications of mark among the figure, extinguished rapidly thus, electric arc in the third space part 263 blows out to the partition component 115H of housing 110H along X2 direction deflection as 273 indications of mark among the figure, extinguished rapidly thus, and, electric arc in the 4th gap portion 264 blows out to the side plate parts 113H of housing 110H along X1 direction deflection as 274 indications of mark among the figure, is extinguished rapidly thus.
Graphical presentation among Figure 20 A the electric arc 272 that in second gap portion 262, produces, this electric arc is between as anodal travelling contact 257X2 and the fixed contact 254X2 as negative pole.Graphical presentation among Figure 20 B the form of the voltage Varc of electric arc 272 (but voltage of pilot arc).
What provide as the following formula is such, and the voltage Varc of electric arc 272 is two voltage V1 and V2 sum:
Varc＝V1+V2
Wherein, V1 is that V2 is arc stream (field intensity of arc column and the product of its length) near positive electrical pressure drop v1 that produces the travelling contact 257X2 and near produce fixed contact 254X2 negative electricity pressure drop v2 sum (V1=v1+v2).
With this understanding, arc voltage Varc must be greater than the voltage E of DC power supply 71, that is to say, when the travelling contact 257X2 that contacts with fixed contact 254X2 moves and separates with fixed contact 254X2, in order to prevent between travelling contact 257X2 and fixed contact 254X2, to produce electric arc, that is, in order to cut off the electric current between travelling contact 257X2 and the fixed contact 254X2, Varc＞E is the condition that must satisfy.
Relay 10H in this execution mode has the gap portion 262 and 261 of two series connection, and these two gap portions are arranged in first interconnection circuit 73 that the positive pole of DC power supply 71 and load circuit 72 are coupled together.Thereby, compare with the situation that only has single gap portion in first interconnection circuit 73-for example compare with the situation (first execution mode) that adopts relay 10A shown in Figure 4, voltage drop V1 will be a twice, thereby improve arc voltage Varc, make that electric arc is not easy to take place.
In second interconnection circuit 74 that DC power supply 71 negative poles and load circuit 72 are coupled together, two gap portions 263 and 264 are also connected.Thereby as described above, arc voltage Varc has been enhanced, and makes that electric arc is not easy to take place.
Thereby, when relay 10H is installed as shown in Figure 19, be not easy to produce electric arc at first to the 4th gap portion 261-264 place, and, as mentioned above, the electric arc that produces at first to the 4th gap portion 261-264 place can be blown and extinguish immediately, thereby, prevented from travelling contact 256X2,257X2,256X1,257X1 and fixed contact 252X2,254X2,252X1,254X1 are caused damage.The result is exactly, even relay 10H can not descend through its performance of opening and closing operations repeatedly yet, thereby relay 10H has long working life.
In addition, although the gap of relay 10H (261 to 264) number is four, this is identical with relay 10F shown in Figure 14 with relay 10E shown in Figure 13, but the terminals number (for circuit 70) that stretches out from relay 10H bottom is four, and this number is half (referring to Figure 18 C) that relay 10E or relay 10F go up terminals number (eight).The result is exactly, according to the design of relay 10H, the number of the circuit pattern relevant with relay can be reduced on the printed circuit board (PCB), and can only make circuit pattern on a side of printed circuit board (PCB), and need not to chart, thereby can reduce the manufacturing cost of printed circuit board (PCB) in both sides.
In addition, if the first relay main body 250X2 and the second relay main body 250X1 can be separated from each other enough big distance, then partition component 115H can be cancelled.Under the situation of cancellation partition component 115H, first, second permanent magnet blocks part 30H and 40H can be gathered together, that is to say that the permanent magnet blocks part that available monolithic is elongated replaces first, second permanent magnet blocks part.
In addition, partition component 115H can be and housing 110H member independently.
[the 8th execution mode]
Perspective representation among Figure 21 according to the relay 10J of eighth embodiment of the invention, do not express housing among the figure.For ease of describing, in Figure 21, first, second permanent magnet blocks part 30J and 40J are expressed as transparent.
Relay 10J is with the difference of relay 10H shown in Figure 17 (the 7th execution mode): the first relay main body 250X2 and the second relay main body 250X1 are integrated into, and replace magnet exciting coil unit 105HX2 and 150HX1 with single excitation driver part 300.
Excitation driver part 300 comprises magnet exciting coil unit 301, yoke 302, armature 303 and plug-in unit 304.The expanded range of plug-in unit 304 is comprising movable elastic component 255X2 and movable elastic component 255X1.
The first switching parts 11JX2 and second opens and closes parts 11JX1 and is arranged on the single base portion 310 along the X1-X2 direction.
When this single excitation driver part 300 is activated, utilize plug-in unit 304 to make movable elastic component 255X2 and 255X1 on the Y2 direction, be squeezed, thereby simultaneously closed first open and close parts 11JX2 and second and open and close parts 11JX1.
[the 9th execution mode]
Perspective representation among Figure 22 according to ninth embodiment of the invention, with the relay 10K of housing.In Figure 22, for ease of describing, first, second permanent magnet blocks part 30K and 40K are expressed as transparent.
The difference of relay 10K and relay 10H shown in Figure 17 (the 7th execution mode) is: utilize movable elastic component 280X2 and 280X1 to replace movable elastic component 255X2 and 255X1 shown in Figure 17 respectively.
The size of movable elastic component 280X2 is enough big, is enough to stride across first, second fixing spring terminal 251X2 and 253X2, and is fixed with travelling contact 256X2 and 257X2 thereon.Movable elastic component 280X2 is fixed on the Y2 side surface of plug-in unit 104KX2.Plug-in unit 104KX2 is fixed on the vertical component of L shaped armature 103KX2.
The size of movable elastic component 280X1 is enough big, is enough to stride across the 3rd, the 4th fixing spring terminal 251X1 and 253X1 and extends, and be fixed with travelling contact 256X1 and 257X1 thereon.Movable elastic component 280X1 is fixed on the Y2 side surface of plug-in unit 104KX1.Plug-in unit 104KX1 is fixed on the vertical component of L shaped armature 103KX1.
When the first relay main body 250X2 and the second relay main body 250X1 were driven simultaneously, plug-in unit 104KX2 and 104KX1 were activated on the Y2 direction simultaneously, thereby movable elastic component 280X2 and 280X1 are subjected to displacement on the Y2 direction simultaneously.
As the relay 10J (referring to Figure 21) of above-mentioned the 8th execution mode, available single magnet exciting coil unit replaces magnet exciting coil unit 105HX2 and the 105HX1 of relay 10K.According to such structural design, single magnet exciting coil unit is driven and mobile movable elastic component 280X2 and 280X1.
[the tenth execution mode]
Decomposition diagram among Figure 23 has been represented the relay 10L according to tenth embodiment of the invention.
Figure 24 is the Y2 sectional view of relay 10L shown in Figure 23.
Relay 10L and Fig. 8 A are the fixed structure of housing to the difference of the relay 10B shown in Fig. 8 C (second execution mode).
Housing 110K comprises side plate parts 112K, 113K and central dividing plate parts (insulation barrier) 115K.By following structure housing 110K is attached on relay main body 130X1 and the 130X2: will engage with jaw members 310X2 on the relay main body 130X2 base portion 100LX2 built in the hole 320X2 near the part side plate parts 112K lower end; To engage with jaw members 310X1 on the relay main body 130X1 base portion 100LX1 built in the hole 320X1 near the part side plate parts 113K lower end; And will engage with the jaw members 311X2 of relay main body 130X2 base portion 100LX2 built in the X2 side depression near the part partition component 115K lower end 321; And will engage with the jaw members 311X1 of relay main body 130X1 base portion 100LX1 built in the X1 side depression near the part partition component 115K lower end 322.Thereby the bond strength between housing 110K and relay main body 130X1 and the 130X2 is very high.The function of partition component 115K is that relay main body 130X1 and 130X2 are fixed.
According to an aspect of the present invention, be provided with permanent magnet, thereby can on first gap (first gap) and second that opens and closes parts opens and closes the gap (second gap) of parts, apply the magnetic field of equidirectional.Thereby, by being provided with first with the centre of first interconnection circuit of load and opening and closing parts and the second switching parts are set connecting dc power anode, just can utilize single relay to cut off first interconnection circuit and second interconnection circuit simultaneously in the centre of second interconnection circuit that is connected dc power cathode and load.
In addition,, extinguishes on the electric arc in first gap and the generation of second gap location owing to all outwards being blown out, so, can prevent that the first switching parts and second are opened and closed parts causes damage.The result is exactly, even through after the off-on operation repeatedly, the performance of relay any decline can not occur yet, thereby relay can be competent at very long available labour time.
In addition, need not on the printed circuit board (PCB) that this relay has been installed, to be provided with the interconnection circuit of intersection.Thereby, only utilize the one-sided of printed circuit board (PCB) just can form interconnection circuit.
The present invention is not limited to specifically described execution mode in the literary composition, under the prerequisite departing from the scope of the invention not, can make remodeling and change.
The application is based on the proposition of patent application formerly of following Japan: the 2007-239233 patent application of submitting on September 14th, 2007; And the 2008-089410 patent application of submitting on March 31st, 2008, these full contents in first to file are incorporated among the application as a reference.

Claims (3)

1. relay, it comprises:
First opens and closes parts, and it has and can separate and closeable first gap;
Second opens and closes parts, and it has and can separate and closeable second gap, and described second opens and closes parts is arranged to first to open and close parts side-by-side, so that first gap and second gap are arranged abreast;
The excitation driver part, it is configured to impel the first switching parts and second to open and close parts and side by side moves; And
Permanent magnet, it is configured to apply magnetic field with identical direction to first first gap and second second gap that opens and closes parts that opens and closes parts,
Wherein, first first gap that opens and closes parts comprises first gap portion and second gap portion;
First opens and closes parts comprises: first travelling contact and first fixed contact, two contacts across first gap portion mutually facing to, thereby removable state for being in contact with one another and disengaging mutually; Second travelling contact and second fixed contact, these two contacts across second gap portion mutually facing to, thereby removable for being in contact with one another and the state that disengages mutually; The first fixing spring terminal with described first fixed contact; The second fixing spring terminal with described second fixed contact; And the first movable elastic component with described first, second travelling contact, the first movable elastic component strides across the first fixing spring terminal and the second fixing spring terminal extends;
Second second gap that opens and closes parts comprises third space part and the 4th gap portion;
Second opens and closes parts comprises: the 3rd travelling contact and the 3rd fixed contact, two contacts across the third space part mutually facing to, thereby removable state for being in contact with one another and disengaging mutually; The 4th travelling contact and the 4th fixed contact, these two contacts across the 4th gap portion mutually facing to, thereby removable for being in contact with one another and the state that disengages mutually; The 3rd fixing spring terminal with described the 3rd fixed contact; The 4th fixing spring terminal with described the 4th fixed contact; And the second movable elastic component with described the 3rd, the 4th travelling contact, the second movable elastic component strides across the 3rd fixing spring terminal and the 4th fixing spring terminal extends; And
Described permanent magnet is configured to apply magnetic field with identical direction to first gap portion, second gap portion, third space part and the 4th gap portion.
2. relay according to claim 1 is characterized in that:
Described permanent magnet is a kind of in samarium-cobalt magnet, neodymium magnet and the ferrite magnet.
3. circuit arrangement, it comprises: first interconnection circuit, its positive pole and load with DC power supply couples together; Second interconnection circuit, its negative pole and load with DC power supply couples together, and it is characterized in that, comprising:
Relay according to claim 1,
Wherein, described relay is configured to like this: making the switching parts of winning can switch on and off first interconnection circuit, and making the second switching parts can switch on and off second interconnection circuit.
CN201110205616.9A 2007-09-14 2008-06-23 Relay Active CN102280313B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007239233 2007-09-14
JP2007-239233 2007-09-14
JP2008089410A JP5202072B2 (en) 2007-09-14 2008-03-31 relay
JP2008-089410 2008-03-31

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DE602008003078D1 (en) 2010-12-02
DE602008003394D1 (en) 2010-12-23
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JP5202072B2 (en) 2013-06-05
CN102306573A (en) 2012-01-04
CN102280314A (en) 2011-12-14
CN102280313B (en) 2014-07-09
CN101388303A (en) 2009-03-18
CN102306572A (en) 2012-01-04
TWI400737B (en) 2013-07-01
TW200912983A (en) 2009-03-16
CN101388303B (en) 2012-05-02
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CN102280314B (en) 2014-07-09
CN102306573B (en) 2014-01-08
JP2009087918A (en) 2009-04-23

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