JP5202072B2 - relay - Google Patents

Description

  The present invention relates to a relay, and more particularly to a direct current high voltage control relay that can be used in a circuit necessary for interrupting a high voltage direct current.

  There is a circuit through which high-voltage direct current flows. For example, an uninterruptable power supply (UPS) circuit that starts and supplies power when a commercial power supply to a computer system fails, and a circuit near a battery of an electric vehicle. When a relay is applied to such a circuit, when a high voltage is applied to the relay, an arc current is generated between the contacts when the pair of contacts in contact with the relay is separated. The arc current damages the contacts and shortens the life of the relay.

  A device that opens and closes a high-voltage direct current circuit of a UPS has a configuration in which a relay and a semiconductor switch are combined. The semiconductor switch has a role of reducing the value of the current flowing through the relay when the circuit is interrupted so that no arc is generated between the contacts of the relay.

  However, in addition to the relay, a semiconductor switch is required, and the number of parts increases, which causes a problem in terms of reliability. In addition, the cost increases.

Japanese Patent Application Laid-Open No. 2001-176370 describes a relay that is applied to a circuit in the vicinity of a battery of an electric vehicle. In this relay, a permanent magnet is provided near the contact, and the arc current generated when the contact leaves is deflected using the magnetic force of the permanent magnet to prevent the contact from being damaged and improve durability. The relay is described. In addition, this relay has a configuration in which a pair of contact sets are arranged side by side, and arc currents generated at the positions of the respective contact sets are deflected outward so as to be separated from each other.
JP 2001-176370 A Japanese Patent Laid-Open No. 10-326553

  However, this relay is configured in the middle of the circuit wiring that connects one electrode of the DC power source, for example, the anode and the load circuit, and the pair of contact points is connected in parallel to the circuit wiring. It is the structure which is done.

  For this reason, even when the two contact pairs of the relay are both open, the cathode of the DC power supply and the load circuit remain connected, and the DC power supply and the load circuit are completely independent. is not. For this reason, there is a risk that a current continues to be supplied to the load circuit, particularly when the ground potential is unstable.

  Further, the relay is a terminal connection type, has a large size, and does not have a structure that can be mounted on a printed circuit board.

  The relay disclosed in Japanese Patent Laid-Open No. 10-326553 includes a pair of contact sets, a permanent magnet between the pair of contact sets, and has a structure that can be mounted on a printed circuit board. However, the arc generated at each contact set is not blown outward, and the circuit wiring extending from the anode and cathode of the DC power supply is cut off at the same time. Absent.

  An object of this invention is to provide the relay made in view of said point.

The present invention provides a first fixed spring terminal having a terminal connectable to circuit wiring, a first fixed contact provided on the first fixed spring terminal, and a first movable terminal having a terminal connectable to the circuit wiring. A spring terminal, a first opening / closing part having a first movable contact provided at a position facing the first fixed contact of the first movable spring terminal and in contact with the first fixed contact so as to be openable and closable; ,
A second fixed spring terminal having a terminal connectable to the circuit wiring; a second fixed contact provided on the second fixed spring terminal; a second movable spring terminal having a terminal connectable to the circuit wiring; A second opening / closing part having a second movable contact provided at a position facing the second fixed contact of the second movable spring terminal and in contact with the second fixed contact so as to be openable and closable ;
An excitation driving unit that operates the first opening and closing unit and the second opening and closing unit simultaneously;
A magnetic field of the same direction is applied to a first gap between the first fixed contact and the first movable contact and a second gap between the second fixed contact and the second movable contact. It has a permanent magnet for a,
The first opening / closing portion and the second opening / closing portion are formed by opening / closing directions of the first fixed contact and the first movable contact, and opening / closing of the second fixed contact and the second movable contact. It is provided in parallel so that the direction is parallel,
The permanent magnet is configured to apply a magnetic field in a direction orthogonal to the opening / closing direction and the arrangement direction of the first opening / closing portion and the second opening / closing portion .

  The present invention has the following effects.

  Since the permanent magnet is provided so that a magnetic field in the same direction acts on the first gap of the first opening / closing part and the second gap of the second opening / closing part, the first opening / closing part is connected to the anode of the DC power source. With a single relay by connecting in the middle of the first circuit wiring connecting the load and the load, and connecting the second switching part in the middle of the second circuit wiring connecting the cathode of the DC power source and the load. Both the first circuit wiring and the second circuit wiring can be cut off simultaneously.

  Since the arcs generated in the first gap and the second gap are both blown out and extinguished, damage to the first opening / closing part and the second opening / closing part can be suppressed, and the relay operates many times. There is no performance deterioration later and the product has a long life.

  Since the circuit wiring formed on the printed circuit board on which the relay is mounted need not intersect, the circuit wiring can be formed using only one side of the printed circuit board.

Next, an embodiment of the present invention will be described.
[Principle of DC high voltage control relay]
First, the principle of the DC high voltage control relay according to the present invention will be described.

  FIG. 1 shows a principle configuration of a relay according to the present invention, and FIG. 2 shows an electric circuit device including the relay.

  The relay 10 acts on the first opening / closing part 11 and the second opening / closing part 20 arranged side by side, the first permanent magnet 30 acting on the first opening / closing part 11, and the second opening / closing part 20. And a second permanent magnet 40.

  X1-X2 is the direction in which the first opening / closing part 11 and the second opening / closing part 20 are arranged, and Y1-Y2 is the fixed contact and the movable contact of the first and second opening / closing parts 11, 20 facing each other. The direction Z1-Z2 is the longitudinal direction of the spring terminals of the first and second opening / closing parts 11 and 20.

  The first opening / closing part 11 includes a first fixed spring terminal 13 having a first fixed contact 12 and a first movable spring terminal 15 having a first movable contact 14. Reference numeral 17 denotes a first gap between the first fixed contact 12 and the first movable contact 14, and the Y direction is the direction of the gap.

  The second opening / closing part 20 has a second fixed spring terminal 23 having a second fixed contact 22 and a second movable spring terminal 25 having a second movable contact 24. Reference numeral 27 denotes a second gap between the second fixed contact 22 and the second movable contact 24, and the Y direction is the direction of the gap.

  Reference numeral 16 denotes an excitation coil as an excitation drive unit, which is arranged to face the first and second opening / closing units 11 and 20.

  As shown in FIG. 1 (B), the first permanent magnet 30 as the arc extinguishing means is powerful and is disposed on the Z1 side of the first opening / closing part 11, with the Z2 side being the N pole, The Z1 side is the S pole, and a strong magnetic field 53 in the Z2 direction is continuously applied to the first gap 17.

  As shown in FIG. 1 (D), the second permanent magnet 40 as the arc extinguishing means is strong and is disposed on the Z1 side of the second opening / closing part 20, and the first permanent magnet Similar to 30, the Z2 side is the N pole and the Z1 side is the S pole, and the strong magnetic field 54 in the Z2 direction is continuously applied to the second gap 27. The magnetic fields 53 and 54 are indicated by magnetic lines of force. The directions of the magnetic fields 53 and 54 (Z2 direction) at the locations of the first and second gaps 17 and 27 are directions orthogonal to the direction (Y) of the first and second gaps 17 and 27, respectively.

  The relay 10 has terminals 61 to 64 protruding in the Z2 direction from the bases of the spring terminals 13, 23, 15, 25, and is configured to be mounted on a printed circuit board.

  The terminal 61 is designated by a symbol and / or character to be connected to the positive pole of the DC power supply. The terminal 63 is designated by a symbol and / or character to be connected to the negative pole of the DC power supply. The terminal 62 is specified to be connected to one end of the load circuit. Similarly, the terminal 64 is specified to be connected to the opposite end of the load circuit.

  The electric circuit 70 to which the relay 10 is applied includes a DC power supply 71 that outputs a high voltage of several hundred volts, a load circuit 72, a first circuit wiring 73 that connects the positive electrode of the DC power supply 71 and the load circuit 72, A second circuit wiring 74 that connects the negative pole of the DC power supply 71 and the load circuit 72 is provided. 75 is a circuit unit on the DC power supply 71 side, and 76 is a circuit unit on the load circuit 72 side. Arrows indicate the direction of current flow.

  The first circuit wiring 73 and the second circuit wiring 74 are formed as patterns on one side of the printed circuit board 80. In the printed circuit board 80, as shown in FIG. 2, two through holes 81 and 82 are formed in the middle of the first circuit wiring 73 in an arrangement corresponding to the terminals 61 and 62, and Two through holes 83 and 84 are formed in the middle of the second circuit wiring 74 in an arrangement corresponding to the terminals 63 and 64.

  73P is a pattern extending from the positive pole of the DC power supply 71 in the first circuit wiring 73, and 74P is a pattern extending from the negative pole of the DC power supply 71 in the second circuit wiring 74. is there. 73L is a pattern extending from one end of the load circuit 72 in the first circuit wiring 73, and 74L is a pattern extending from one end of the second circuit wiring 74 on the opposite side of the load circuit 72. . A through hole 81 is formed at the end of the pattern 73P, a through hole 83 is formed at the end of the pattern 74P, a through hole 82 is formed at the end of the pattern 73L, and a through hole 84 is formed at the end of the pattern 74L.

  In the relay 10, terminals 61, 62, 63, 64 are inserted into through holes 81, 82, 83, 84 and soldered to be mounted on a printed circuit board 80.

  When the exciting coil 16 is energized with a direct current, the first movable point 14 is in contact with the first fixed contact 12 and the second movable contact 24 is the second fixed contact. 22, the relay 10 is closed, the current is flowing as indicated by the arrow, and the load circuit 72 is operating.

  When the energization of the exciting coil 16 is cut off, the first movable contact 14 is separated from the first fixed contact 12, and the second movable contact 24 is separated from the second fixed contact 22. At the moment when the first movable contact 14 is separated from the first fixed contact 12, an arc (arc current) is generated in the first gap 17, and similarly, the second movable contact 24 is moved from the second fixed contact 22. At the moment of separation, an arc is generated in the second gap 27.

  Here, since a strong magnetic field 53 acts on the first gap 17 by the first permanent magnet piece 30, as shown in FIG. 1C, the arc is applied to the arc based on Fleming's left-hand rule. The Lorentz force F2 in the X2 direction acts, the arc is deflected in the X2 direction, and blown off in the X2 direction from the gap 17 as indicated by reference numeral 90, and is quickly extinguished. Further, since the arc is blown off from the gap 17 in the X2 direction and quickly extinguished, the first movable contact 14 and the first fixed contact 12 are not damaged.

  Since the strong magnetic field 54 acts on the second gap 27 by the second permanent magnet piece 40, as shown in FIG. 1 (E), the arc is in the X1 direction based on Fleming's left-hand rule. The Lorentz force F1 acts, the arc is deflected in the X1 direction, and is blown off from the gap 27 in the X1 direction as indicated by reference numeral 91 so that the arc is quickly extinguished. Further, since the arc is blown off from the gap 27 in the X1 direction and quickly extinguished, the second fixed contact 22 and the second movable contact 24 are not damaged.

  When the first movable contact 14 is separated from the first fixed contact 12 and the second movable contact 24 is separated from the second fixed contact 22, both the first circuit wiring 73 and the second circuit wiring 74 are brought together. The electrical circuit 70 is disconnected at the same time at the relay 10, and the circuit portion 75 on the DC power supply 71 side and the circuit portion 76 on the load circuit 72 side are separated from each other, i.e., both are cut off and completely independent. Thus, even when the ground potential is unstable, no current is supplied to the load circuit.

  Further, since the movable contacts 14 and 24 and the fixed contacts 12 and 22 are not damaged, the relay 10 does not deteriorate in performance even after many operations and has a long life.

  FIG. 3 shows another schematic configuration of the principle of the relay according to the present invention. The configuration of the relay 10X shown in FIG. 1 is such that the first permanent magnet piece 30X and the second permanent magnet piece 40X are oriented so that the Z2 side is the S pole and the Z1 side is the N pole. The difference is that the terminal 63 is designated to be connected to the negative pole, and the terminal 63 is designated to be connected to the positive pole of the power source. Magnetic fields 53X and 54X in the Z1 direction act on the first and second gaps 17 and 27.

  The electric circuit 70X to which the relay 10X having this configuration is applied is different from the configuration shown in FIG. 1 in that it has a DC power supply 71X having the opposite pole direction.

  When the exciting coil is energized with a direct current, the opposing contacts are in contact, the relay 10X is closed, the current flows as shown by the arrow, and the load circuit 72 operates. ing.

  When the energization of the exciting coil 16 is cut off, the first movable contact 14 is separated from the first fixed contact 12, and the second movable contact 24 is separated from the second fixed contact 22. At the moment when the first movable contact 14 is separated from the first fixed contact 12, an arc (arc current) is generated in the first gap 17, and similarly, the second movable contact 24 is moved from the second fixed contact 22. At the moment of separation, an arc is generated in the second gap 27.

  Here, since the strong magnetic field 53X acts on the first gap 17 by the first permanent magnet piece 30X, as shown in FIG. 3C, the arc is applied to the arc based on Fleming's left-hand rule. The Lorentz force F2 in the X2 direction acts, the arc is deflected in the X2 direction, and blown off in the X2 direction from the gap 17 as indicated by reference numeral 90, and is quickly extinguished.

  Since the strong magnetic field 54X is acting on the second gap 27 by the second permanent magnet piece 40X, as shown in FIG. 3 (E), the arc is in the X1 direction based on Fleming's left-hand rule. The Lorentz force F1 acts, the arc is deflected in the X1 direction, and is blown off from the gap 27 in the X1 direction as indicated by reference numeral 91 so that the arc is quickly extinguished.

  FIG. 4 is a perspective view showing a small DC high voltage control relay 10A according to the first embodiment of the relay of the present invention through a case. FIG. 5 is a diagram showing the relay 10A of FIG. In each figure, the same reference numerals are given to the portions corresponding to the components shown in FIG.

  The relay 10A is an implementation of the relay 10 having the principle configuration shown in FIG. 1. The base 100 has a Y2 side on the X2 side, a first opening / closing part 11 on the X2 side, and a second opening / closing part 20 on the X1 side. The yoke 102 is erected in the center of the base 100, the armature 103 and the card 104 are provided, and the exciting coil unit 105 is mounted and fixed on the Y1 side of the base 100. The whole is covered with a rectangular box-shaped case 110, and a terminal protrudes from the lower surface of the base 100, as will be described later, and has a width W, a length L, and a height H. The excitation coil unit 105, the yoke 102, the armature 103, and the card 104 constitute an excitation drive unit. The width W, length L, and height H are about 20 to 30 mm, the relay 10A is small, has a terminal on the lower surface, and can be mounted on the printed circuit board 80 and used.

  The first opening / closing part 11 includes a pair of a first fixed spring terminal 13 and a first movable spring terminal 15 facing each other in the Y direction. The second opening / closing part 20 is formed by arranging a pair of a second fixed spring terminal 23 and a second movable spring terminal 25 facing each other in the Y direction.

  The exciting coil unit 105 has a structure in which the exciting coil 16 is wound around a winding frame 107. The armature 103 has an L-shape and is supported by the yoke 102, the end of the horizontal portion faces the electrode at the upper end of the exciting coil unit 105, and the card made of insulating resin in the vertical portion. 104 is attached, and the opposite end of the card 104 is attached to a central connecting portion of the movable spring terminals 15 and 25.

  The case 110 is made of a material having excellent heat resistance, for example, a thermosetting resin (for example, an epoxy resin or a phenol resin).

  The top plate portion 111 of the case 110 is insert-molded with first and second permanent magnet pieces 30 and 40 on the inner surface thereof and at a position closer to the Y2 side. When the case 110 is attached to the base 100, the first and second permanent magnet pieces 30, 40 are arranged to face the upper side (Z1 side) of the first and second gaps 17, 27, respectively.

The first and second permanent magnet pieces 30 and 40 are samarium cobalt magnets having a length (X direction) of about 7 mm, a width (Y direction) of about 5 mm, and a thickness (Z direction) of about 2 to 3 mm. , The following characteristics,
Residual magnetic flux density Br: 1.07-1.15 Tesla
Coercivity _{H CB; 597~756kA} / m
Maximum energy product (BH) max: 199 to 247 kJ / m ³
Coercive force H _CJ ; 637 to 1432 kA / m
And is powerful. Samarium cobalt magnets have the characteristics that they are superior in heat resistance compared to neodymium magnets and are not easily demagnetized by heat. Both the first and second permanent magnet pieces 30 and 40 are in the direction in which the Z1 side is the S pole and the Z2 side is the N pole.

  On the bottom surface of the base 100, terminals 61 to 64 protrude in the Z2 direction from the bases of the spring terminals 13, 23, 15 and 25, and terminals 120 and 121 to which the ends of the exciting coil 16 are connected protrude. Yes.

  As shown in FIG. 5 (D), on the bottom surface of the base 100, for each terminal, a display “characterized as a positive pole of a power source” or the like is made by characters represented by resin molding. The indication “plus pole of power supply” specifies that the terminal 61 should be connected to the positive pole side of the power supply. The terminal 63 is specified by the display “negative pole of power supply” to be connected to the negative pole side of the power supply. The terminal 62 is designated by the display “load” to be connected to one end of the load circuit. The terminal 64 is designated by the display “load” to be connected to the opposite end of the load circuit. This designation may be made by a display printed directly on the surface of the side plate portion or the top surface of the top plate portion of the case 110, or may be made by sticking a seal printed with the designation to the case 110.

  As shown in FIGS. 1 and 2, the relay 10 </ b> A spans the first circuit wiring 73 and the second circuit wiring 74 and passes the terminals 61, 62, 63, 64 through the through holes 81. , 82, 83, 84 and soldered, and the terminals 120, 121 are inserted into corresponding through holes and soldered, and mounted on the printed circuit board 80 for use. In addition, instead of the terminals 61, 62, 63, 64 and the terminals 120, 121 protruding linearly below the bottom surface of the base 100, L-shaped terminals are provided, and each terminal is provided on a pad on the printed circuit board. The relay 10A may be surface-mounted on the printed circuit board by soldering.

  Here, there is no polarity of the exciting coil 16, and the direction of the current to the exciting coil 16 is not specified. Therefore, the constraint condition of the circuit for driving the relay 10A can be reduced.

  When energization to the exciting coil 16 is cut off, the relay 10A is in the state shown in FIGS. 4 and 5A to 5D, and the movable contacts 14 and 24 are away from the fixed contacts 12 and 22, respectively. .

  When a direct current is applied to the exciting coil 16 through the terminals 120 and 121, the exciting coil unit 105 is excited, the horizontal portion of the armature 103 is attracted to the exciting coil unit 105, and the movable spring is operated via the card 104. The terminals 15 and 25 are pushed in the Y2 direction, the movable contacts 14 and 24 come into contact with the fixed contacts 12 and 22, respectively, and the relay 10A is in a “closed” state. A current flows as shown by an arrow in FIG. 1, and the load circuit 72 operates.

  When the energization of the exciting coil 16 is cut off, the movable contact 14 is separated from the fixed contact 12, and at the same time, the movable contact 24 is separated from the fixed contact 22, and an arc is generated in the gaps 17 and 27. Since the movable contacts 14 and 24 and the fixed contacts 12 and 22 are thin disks and the opposing surfaces are spherical, the arc is between the center of the movable contacts 14 and 24 and the center of the fixed contacts 12 and 22. Occurs. However, as shown in FIG. 5A, the arc in the gap 17 is caused by the Lorentz force F2 generated based on the Fleming's left-hand rule by the action of the magnetic force of the permanent magnet piece 30, as indicated by reference numeral 90. The arc in the gap 27 is quickly blown off by being deflected in the direction, and the arc in the gap 27 is caused by the Lorentz force F1 generated based on Fleming's left-hand rule by the action of the magnetic force of the permanent magnet piece 40, as indicated by reference numeral 91. It is deflected in the X1 direction, blown away, and quickly extinguished.

  As the arcs in the gaps 17 and 27 are quickly extinguished, firstly, the circuit current flowing in the electric circuit 70 is quickly cut off at 938 μs, for example, as shown by line I in FIG. The Secondly, the movable contacts 14 and 24 and the fixed contacts 12 and 22 are prevented from being damaged, so that the relay 10 has a long life without deterioration of performance even after many opening and closing operations. FIG. 6 shows a circuit current cutoff waveform when the voltage is 400 VDC and the current is 10A.

  The arc 90 generated in the gap 17 hits the inner surface of the side plate portion 112 on the X2 side of the case 110, and the arc 91 generated in the gap 27 hits the side plate portion 113 on the X1 side. Here, since the case 110 is made of a material having excellent heat resistance, the inner surfaces of the side plate portions 112 and 113 are not damaged. In addition, the melt contained in the arc is deposited and deposited on the inner surfaces of the side plate portions 112 and 113, but the inner surface of the side plate portions 112 and 113 and the gaps 17 and 27 are separated by a dimension A of about 2 to 4 mm. Therefore, there is no influence on the opening and closing parts 11 and 20, and no problem occurs.

  If the arc is not deflected, the arc stays in the gaps 17 and 27 and continues, and the movable contacts 14 and 24 and the fixed contacts 12 and 22 are severely damaged and melt and disappear. The circuit current flowing in the electric circuit 70 is as shown by line II in FIG. The portion of line IIa in FIG. 6 means that the movable contacts 14 and 24 and the fixed contacts 12 and 22 have dissolved and disappeared.

  Since the first and second permanent magnet pieces 30 and 40 are separate, the permanent magnet piece 30 and the permanent magnet piece 40 are connected to form one permanent magnet piece as described later (see FIG. 10). Compared to the above, the volume of the material of the permanent magnet is small, and the material cost is reduced.

  In addition, since the arrangement position of the permanent magnet pieces 30 and 40 that blow off the arc is above the gaps 17 and 27 (on the Z1 side), the design of the excitation coil unit 105 that is the excitation drive unit of the relay 10 is a permanent magnet. This can be performed optimally without considering the presence of the pieces 30 and 40.

  Next, a modified example of the case 110, a modified example of the permanent magnet pieces 30 and 40, and a modified example of the fixing structure of the permanent magnet pieces 30 and 40 will be described.

The case 110 is made of a ceramic case member such as ABS (Acrylonitrile Butadiene Styrene) resin, PBT (polybutylene terephthalate) resin, or LCP (Liquid Crystal).
(Polymer) resin may be used for insert molding. In addition, the case 110 may have a configuration in which a portion that is at a high temperature, that is, a portion of the side plate that faces the gaps 17 and 27 is, for example, an epoxy resin or a phenol resin.

  The first and second permanent magnet pieces 30 and 40 may be neodymium magnets or ferrite magnets.

  As shown in FIG. 7, the fixing structure of the first and second permanent magnet pieces 30 and 40 is such that the case has a shape having a recess 115 on the top surface of the top plate, and the permanent magnet piece 30 (40) It is good also as a structure press-fit in the recessed part 115. FIG. Or the structure which adhered to the lower surface of the top plate part of the case using a double-sided tape, the structure adhered to the top plate part of the case using an adhesive, or the top plate part of the case using an adhesive It is good also as a structure fixed to the case, or a structure which press-fits into the recessed part formed in the case, makes temporary assembly, and adhere | attached with the adhesive agent.

  FIG. 8 shows a relay 10B according to a second embodiment of the relay of the present invention. The relay 10B has two relay main bodies 130 shown in FIG. 9, which are incorporated in the case 110B, and are arranged side by side.

  The case 110B is formed with relay body housing portions 115X1 and 115X2 arranged side by side, and the first and second permanent magnet pieces 30 and 40 are fixed to the top plate portions of the relay body housing portions 115X1 and 115X2. It is.

  As shown in FIG. 9, the relay main body 130 has an opening / closing part 11C on the Y2 side of the base 100C, a yoke 102C is erected at the center of the base 100C, and the armature 103C and the card 104C. The excitation coil unit 105C is mounted and fixed on the Y1 side of the base 100C, and the terminals 61C and 62C and the terminal 120C protrude from the lower surface of the base 100C.

  The opening / closing part 11C is configured such that a pair of fixed spring terminal 13C and movable spring terminal 15C are opposed to each other, the fixed contact 12C and the movable contact 14C are opposed to each other, and a gap 17C is formed therebetween. is there.

  130X1 is a relay body incorporated in the relay body housing portion 115X1, and 130X2 is a relay body incorporated in the relay body housing portion 115X2. The relay body 130X1 has a first gap 17B, and the relay body 130X2 has a second gap 27B. Both the first and second permanent magnet pieces 30 and 40 are oriented so that the Z2 side is an N pole and the Z1 side is an S pole, and magnetic fields of the same direction act on the gaps 17B and 27B. Further, the exciting coil of the exciting coil unit of the relay main body 130X1 and the exciting coil of the exciting coil unit 105B of the relay main body 130X2 are connected in series.

  Below the base 100B of the relay 10B, terminals 61B to 64B and terminals 120B and 121B to which ends of the exciting coils connected in series are projected. As shown in FIG. 8C, characters 100 are displayed on the lower surface of the base 100B. The terminal 61B should be connected to the positive pole of the power source, and the terminal 63B is the negative pole of the power source. The terminal 62B is specified to be connected to one end of the load circuit, and the terminal 64B is specified to be connected to the opposite end of the load circuit.

  As shown in FIGS. 1 and 2, the relay 10 </ b> B spans the first circuit wiring 73 and the second circuit wiring 74 and passes through the terminals 61 </ b> B, 62 </ b> B, 63 </ b> B, and 64 </ b> B through the through holes 81. , 82, 83, 84 and soldered, and the terminals 120, 121 are inserted into corresponding through holes and soldered, and mounted on the printed circuit board 80 for use.

  The relay 10B operates with the relay body 130X1 and the relay body 130X2 operating simultaneously. Arcs generated in the gaps 17B and 27B during the operation of the relay 10B are deflected to the outside and blown off toward the side plate portions 112B and 113B as in the case of the relay 10 of the first embodiment, and are quickly cut off. The Therefore, damage to the movable contact and the fixed contact of the relay main bodies 130X1 and 130X2 is suppressed, and thus the relay 10B has a long life.

  FIG. 10 schematically shows a relay 10D according to the third embodiment of the present invention. FIG. 11 is a perspective view showing the case 10D of the relay 10D according to the third embodiment of the present invention, and FIG. 12 is a view showing the relay 10D.

  The relay 10D of FIG. 10 is different in the configuration in which the first and second permanent magnet pieces 30 and 40 in the relay 10 shown in FIG. The other configuration is the same as that of the relay 10 shown in FIG.

  The permanent magnet piece 45 has an elongated rectangular parallelepiped shape extending over the gap 17 and the gap 27, and the Z2 side is an N pole and the Z1 side is an S pole. The configuration with a single permanent magnet piece is possible because the magnetic field in the same direction is applied to the gap 17 and the gap 27.

  Actually, as shown in FIGS. 12A to 12D, the permanent magnet piece 45 is incorporated in the lower surface of the top plate portion of the case 110 </ b> D, and is disposed immediately above the gap 17 and the gap 27. . Magnetic fields in the same direction act on the gap 17 and the gap 27.

  The arc generated in the gaps 17 and 27 during the operation of the relay 10D is the same as that of the relay 10 of the first embodiment, as shown by reference numerals 90D and 91D in FIG. As in the case, both are deflected outward and blown toward the side plate portions 112D and 113D to be quickly cut off. Therefore, damage to the movable contact and the fixed contact of the relay 10D is suppressed, and thus the relay 10D has a long life.

  The configuration with a single permanent magnet piece as described above reduces the number of parts compared to the configuration in which the first permanent magnet piece 30 and the second permanent magnet piece 40 described above are separately provided. It has the effect that it can do and the processing cost which divides a permanent magnet piece can be held down.

  FIG. 13 shows a relay 10E according to the fourth embodiment of the present invention. The relay 10E has two opening / closing parts 200 and 201 corresponding to the first circuit wiring 73, two opening / closing parts 210 and 211 corresponding to the second circuit wiring 74, and a total of four opening / closing parts 200. , 201, 210, 211 are incorporated into one case. The relay 10E has a configuration in which a parallel circuit portion branched in the middle of both the first and second circuit wirings 73 and 74 is formed in the circuit pattern of the printed circuit board. Used in parts.

  The case has a wall part 220 that partitions the opening / closing part 201 and the opening / closing part 210. A permanent magnet piece is arranged for each of the opening / closing sections 200, 201, 210, and 211. The direction of the magnetic pole of the permanent magnet piece is such that a magnetic field in a direction penetrating the paper surface of FIG. 13 from the front side to the back side acts on the opening / closing portions 200 and 211, and the paper surface of FIG. It is determined that a magnetic field in a direction penetrating through the magnetic field acts.

  The arc generated in the opening / closing part 200 is blown off toward the inner surface of the case in the X2 direction, and the arc generated in the opening / closing part 211 in the X1 direction. The arc generated in the opening / closing part 210 is blown off toward the wall part 220 in both the X1 direction and the arc generated in the opening / closing part 210 in the X2 direction.

  Instead of the permanent magnet piece facing the opening / closing part 201 and the permanent magnet piece facing the opening / closing part 210, one long and narrow permanent magnet piece spanning the opening / closing parts 201, 210 may be provided.

  This relay 10E has an effect that the current flowing through the open / close sections 200, 201, 210, and 211 can be reduced.

  FIG. 14 shows a relay 10F according to the fifth embodiment of the present invention. The relay 10F is different from the relay 10E in FIG. 13 in that the case has a wall part 230 that partitions the opening / closing part 200 and the opening / closing part 201, and a wall part 231 that partitions the opening / closing part 210 and the opening / closing part 211. Unlike the permanent magnet pieces arranged for each of the opening / closing sections 200, 201, 210, 211, the direction of the magnetic poles is the back side of the paper surface of FIG. 14 for all the opening / closing sections 200, 201, 210, 211. The structure is different in that it is determined such that a magnetic field in a direction penetrating the slab is applied.

  The arc generated in the opening / closing part 200 is blown off in the X2 direction toward the inner surface of the case, the arc generated in the opening / closing part 201 is blown out in the X2 direction toward the wall 230, and the arc generated in the opening / closing part 210 is X1 direction. The arc generated in the opening / closing portion 211 is blown off toward the inner surface of the case in the X1 direction, and the arc generated in the opening / closing portion 201 is blown out in the X2 direction toward the wall portion 230.

  Instead of the permanent magnet piece facing the opening / closing part 200 and the permanent magnet piece facing the opening / closing part 201, a single long and narrow permanent magnet piece spanning the opening / closing parts 200, 201 may be provided. Instead of the permanent magnet piece facing the opening / closing part 210 and the permanent magnet piece facing the opening / closing part 211, a single long and narrow permanent magnet piece spanning the opening / closing parts 210, 211 may be provided. Further, instead of the permanent magnet pieces facing the individual opening / closing sections, a single elongated permanent magnet piece having a size extending over all the opening / closing sections 200, 201, 210, 211 may be provided.

  Similar to the relay 10E, the relay 10F also has an effect of reducing the current flowing through the open / close sections 200, 201, 210, and 211.

  FIG. 15 shows a relay 10G according to the fifth embodiment of the present invention. The relay 10G is different from the relay 10A shown in FIG. 4 in the first and second permanent magnet pieces 30G and 40G.

  FIGS. 16A and 16B show the positional relationship of the first and second permanent magnet pieces 30 </ b> G and 40 </ b> G with respect to the first and second gaps 17 and 27.

  The diameter d of the stationary contacts 12 and 22 is 3 mm.

  The first and second permanent magnet pieces 30G, 40G are flat rectangular parallelepipeds, and have a length l (X direction) of 6.6 mm and a width w (Y direction) of 5 mm. The length l is about twice the diameter d of the fixed contacts 12 and 22 and l> d.

  The first permanent magnet piece 30G faces the upper side (Z1 side) immediately above the first gap 17, and the center 30GC in the X direction is in the X2 direction (first direction with respect to the center of the fixed contact 12). The dimension e (about 0.8 mm) is shifted in the direction in which the arc generated in the gap 17 is blown away. Therefore, in the first permanent magnet piece 30G, the length a1 (4 mm) protruding from the center of the fixed contact 12 toward the X2 direction, and the length protruding from the edge of the fixed contact 12 toward the X2 direction. b1 (1.5 mm) is longer than the corresponding length when the first permanent magnet piece 30G is arranged with its center 30GC aligned with the line in the Z direction passing through the center of the fixed contact 12.

  Further, in the first permanent magnet piece 30G, the length a1 (4 mm) on the X2 direction side from the center of the fixed contact 12 is longer than the length a2 (2.6 mm) on the X1 direction side from the center of the fixed contact 12. That is, a1> a2, and the length b1 (1.5 mm) protruding from the edge of the fixed contact 12 in the X2 direction is the length b2 (1.5 mm) protruding from the edge of the fixed contact 12 in the X1 direction. 1.1 mm), i.e., b1> b2.

  Therefore, the first permanent magnet piece 30G is compared with a configuration (indicated by a two-dot chain line in FIG. 16) in which the center 30GC is arranged in alignment with the Z-direction line passing through the center of the fixed contact 12. The space over which the magnetic field generated by the magnet piece 30G extends is wider than the first gap 17 in the X2 direction than in the X1 direction. In other words, a limited magnetic field from the first permanent magnet piece 30G effectively acts on the arc.

  Therefore, when the arc generated in the gap 17 is deflected in the X2 direction by the action of the magnetic force of the first permanent magnet piece 30 as indicated by reference numeral 90G in FIG. 15, the magnetic field generated by the first permanent magnet piece 30G. Acts efficiently on the deflected arc, and the arc is blown off better than in the relay 10A shown in FIG.

  The second permanent magnet piece 40G faces the upper side (Z1 side) immediately above the first gap 27, and the center 40GC in the X direction is in the X1 direction (second direction with respect to the center of the fixed contact 22). The dimension e (about 0.8 mm) is shifted in the direction in which the arc generated in the gap 27 is blown away. Therefore, the second permanent magnet piece 40G is compared with a configuration (indicated by a two-dot chain line in FIG. 16) in which the center 40GC is arranged so as to coincide with the Z-direction line passing through the center of the fixed contact 22. The space to which the magnetic field by the permanent magnet piece 40G extends is wider than the second gap 27 in the portion in the X2 direction. Therefore, when the arc in the gap 27 is deflected in the X1 direction by the action of the magnetic force of the second permanent magnet piece 40G as indicated by reference numeral 91G in FIG. 15, the magnetic field by the second permanent magnet piece 40G is deflected. The arc is effectively blown off and is quickly extinguished as compared with the case of the relay 10A shown in FIG.

FIG. 17 is a perspective view showing the relay 10H according to the seventh embodiment of the present invention with the case removed and the permanent magnet seen through. FIG. 18 is an projection view showing the relay 10H of FIG. FIG. 19 is a diagram schematically showing the relay 10H of FIG. 17 and showing the connection between the relay 10H and the power source and the load.
[Configuration of relay 10H]
The relay 10H has a configuration in which the first relay body 250X2 is disposed on the X2 side and the second relay body 250X1 is disposed on the X1 side, and is incorporated in the case 110H, and is arranged side by side.

  The first relay body 250X2 has a first opening / closing part 11HX2 on the Y2 side of the base 100HX2, a yoke 102HX2 is erected at the center of the base 100HX2, and the armature 103HX2 and the card 104HX2 are provided. The excitation coil unit 105HX2 is mounted and fixed on the Y1 side of the base 100HX2, and the terminals 61HX2, 62HX2 and the terminal 120HX2 protrude from the lower surface of the base 100HX2. The first opening / closing part 11HX2 has a first gap. The first gap has a first gap portion and a second gap portion.

  The first opening / closing part 11HX2 is a movable spring member having a size straddling the first and second fixed spring terminals 251X2 and 252X2 and the first and second fixed spring terminals 251X2 and 253X2 arranged in the X direction. 255X2. Fixed contacts 252X2 and 254X2 are fixed to the first and second fixed spring terminals 251X2 and 252X2, respectively. The lower end of the movable spring 255X2 is fixed to the base 100HX2, and can be bent. The movable fixed contacts 256X2 and 257X2 are fixed to the movable spring 255X2.

  The fixed contact 252X2 and the movable contact 256X2 are spaced apart from each other, and a first gap portion 261 is formed therebetween. The fixed contact 254X2 and the movable contact 257X2 are spaced apart from each other, and a second gap portion 262 is formed therebetween.

  Further, terminals 61H and 62H and a terminal 120H protrude from the lower surface of the base 100HX2.

  The second relay body 250X1 has the same configuration as the first relay body 250X2 and includes a second opening / closing part 11HX1. The second opening / closing part 11HX1 has a second gap. The second gap has a third gap portion and a fourth gap portion.

  The second opening / closing part 11HX1 has a third gap part 263 between the fixed contact 252X1 and the movable contact 256X1, and has a fourth gap part 264 between the fixed contact 254X1 and the movable contact 257X1. Terminals 61H and 62H and a terminal 120H protrude from the lower surface of the base 100HX2.

  The excitation coil 16HX2 of the excitation coil unit 105HX2 and the excitation coil 16HX1 of the excitation coil unit 105HX1 are connected in series.

  The rectangular parallelepiped first and second permanent magnet pieces 30H and 40H are fixed to the top plate portion 111H of the case 110H. The first permanent magnet piece 30H is located on the Z1 side of the first gap portion 261 and the second gap portion 262 and straddles the first and second gap portions 261 and 262. The second permanent magnet piece 40H is located on the Z1 side of the third gap portion 263 and the fourth gap portion 264 and straddles the third and fourth gap portions 263, 264.

  The first and second permanent magnet pieces 30H and 40H are oriented in such a manner that the Z2 side is the N pole and the Z1 side is the S pole, and the first to fourth gap portions 261 to 264 are as shown in FIG. A magnetic field in the same direction is acting.

  As shown in FIG. 18C, characters 100 are displayed on the lower surfaces of the bases 100HX1 and 100HX2. The terminal 61H should be connected to the positive pole of the power source, and the terminal 63H has a negative power source. The terminal 62H is specified to be connected to one end of the load circuit, and the terminal 64H is specified to be connected to the opposite end of the load circuit.

As shown in FIG. 18A, the case 110H has a partition plate portion 115H in the center. The partition plate portion 115H is made of, for example, ceramic having heat resistance, and is located between the first relay body 250X2 and the second relay body 250X1 and partitions.
[Mounting of relay 10H and operation of relay 10H]
As shown in FIG. 19, an electric circuit 70 to which the relay 10H is applied includes a DC power supply 71 that outputs a high voltage of several hundred volts, a load circuit 72, a positive electrode of the DC power supply 71, and a load circuit 72 connected to the load circuit 72. 1 circuit wiring 73, and a second circuit wiring 74 that connects the negative pole of the DC power supply 71 and the load circuit 72. The first circuit wiring 73 and the second circuit wiring 74 are formed as patterns on one surface of the printed circuit board 80H.

  The first circuit wiring 73 has a pattern 73 </ b> P extending from the positive pole of the DC power supply 71 and a pattern 73 </ b> L extending from one end of the load circuit 72. The second circuit wiring 74 has a pattern 73 </ b> P that extends from the negative pole of the DC power supply 71 and a pattern 74 </ b> L that extends from the opposite end of the load circuit 72.

  The relay 10H having the above configuration is mounted by inserting the terminal 61H into the end of the pattern 73P, the terminal 63H into the end of the pattern 73P, the terminal 62H into the end of the pattern 73P, and the terminal 64H into the through hole at the end of the pattern 74L and soldering. It is. That is, the first relay body 250X2 is provided in the middle of the first circuit wiring 73, and the second relay body 250X1 is provided in the middle of the second circuit wiring 74. Terminals 120H and 121H are also inserted into the through holes and soldered.

  When a direct current is applied to the exciting coils 16HX1 and 16HX2 through the terminals 120H and 121H, the exciting coil units 105HX2 and 105HX1 are simultaneously excited, and for the first relay body 250X2, the horizontal portion of the armature 103HX2 is the exciting coil unit 105HX2. The movable spring member 225X2 is pushed in the Y2 direction via the card 104HX2, the movable contacts 256X2 and 257X2 come into contact with the fixed contacts 252X2 and 254X2, respectively, and the first relay body 250X2 is “closed”. State. Regarding the second relay body 250X1, the horizontal portion of the armature 103HX1 operates by being attracted to the exciting coil unit 105HX1, the movable spring member 225X1 is pushed in the Y2 direction via the card 104HX1, and the movable contacts 256X1, 257X1 are moved. The second relay body 250X1 is in a “closed” state by contacting the fixed contacts 252X1 and 254X1, respectively. As a result, a current flows as shown by an arrow in FIG. 19, and the load circuit 72 operates. In the movable spring member 225X2, the current flows from the movable contact 257X2 side toward the movable contact 256X2. In the movable spring member 225X1, current flows from the movable contact 257X1 side toward the movable contact 256X1 side.

  When the energization to the exciting coils 16HX1 and 16HX2 is cut off, the movable contacts 256X2 and 257X2 are separated from the fixed contacts 252X2 and 254X2, respectively. At the same time, the movable contacts 256X1 and 257X1 are separated from the fixed contacts 252X1 and 254X1, respectively. An arc is generated in the gap portions 261, 262, 263, 264.

  Here, the arc in the gap portion 261 is deflected in the X2 direction and blown toward the side plate portion 112H as indicated by reference numeral 271. The arc in the gap portion 262 is deflected in the X1 direction as indicated by reference numeral 272. Then, it is blown off toward the partition plate portion 115H and the arc is quickly extinguished. The arc in the gap portion 263 is deflected in the X2 direction as indicated by reference numeral 273 and blown off toward the partition plate portion 115H, and the arc in the gap portion 264 is deflected in the X1 direction as indicated by reference numeral 274, and the side plate. The part 113H is blown off toward the partition plate part 115H and is quickly extinguished.

  FIG. 20A shows an arc 272 generated in the gap portion 262 between the movable contact 257X2 which is an anode and the fixed contact 254X2 which is a cathode. FIG. 5B shows the configuration of the voltage Varc of the arc 272 (voltage value that can maintain the arc).

The voltage Varc of the arc 272 is the sum of the following two voltages V1 and V2.
Varc = V1 + V2.

  Here, V1 is the sum of the anode drop voltage v1 generated in the vicinity of the movable contact 257X2 and the cathode drop voltage v2 generated in the vicinity of the fixed contact 254X2, and is (v1 + v2).

  V2 is the arc column voltage (the product of the arc column electric field strength and its length).

Here, when the movable contact 257X2 that has been in contact with the fixed contact 254X2 is separated from the fixed contact 254X2, no arc is generated between the movable contact 257X2 and the fixed contact 254X2, that is, the movable contact 257X2 is fixed. In order to interrupt the current with the contact 254X2, the arc voltage Varc is larger than the voltage E of the DC power supply 71, that is,
It is a necessary condition that Varc> E.

  Since the relay 10H of the present embodiment has a configuration in which two gap portions 262 and 261 are connected in series to the first circuit wiring 73 that connects the positive pole of the DC power supply 71 and the load circuit 72, the drop voltage V1 is In the case where one circuit wiring 73 has one gap portion, for example, when the relay 10A shown in FIG. 5 is used, it is twice as compared with the arc voltage Varc. Is less likely to occur.

  The second circuit wiring 74 that connects the negative pole of the DC power source 71 and the load circuit 72 is also provided with two gap portions 263 and 264 connected in series, and the arc voltage Varc is increased as described above. Therefore, the arc is less likely to occur.

  Therefore, when the relay 10H is mounted as shown in FIG. 19, it is difficult to generate an arc in each gap portion 261 to 264 as described above, and the inside of each gap portion 261 to 264 As a result of the arc generated in the arc being blown off and the arc extinguished quickly, the movable contacts 256X2, 257X2, 256X1, 257X1 and the fixed contacts 252X2, 254X2, 252X1, 254X1 are prevented from being damaged. 10H has a long life without degradation of performance even after many opening and closing operations.

  Further, the relay 10H has four gaps 261 to 264, and is the same as the relay 10E shown in FIG. 13 and the relay 10F shown in FIG. However, the number of terminals protruding to the bottom of the relay 10H is eight in the case of the relays 10E and 10F shown in FIGS. 18 (C)). Therefore, the number of patterns related to the relay 10H on the printed circuit board is small, and it is sufficient to form the pattern on one side without using both sides of the printed circuit board, and the manufacturing cost of the printed circuit board is low.

  Further, when the first relay main body 250X2 and the second relay main body 250X1 can be disposed sufficiently apart from each other, the partition plate portion 115H may be omitted. When the partition plate portion 115H is omitted, the first and second permanent magnet pieces 30H and 40H can be integrated, that is, a configuration including one elongated permanent magnet piece.

  Further, the partition plate portion 115H may be a separate member from the case 110H.

  FIG. 21 is a perspective view showing the relay 10J according to the eighth embodiment of the present invention with the case removed and the permanent magnets 30J and 40J seen through.

  The relay 10J is different from the relay 10H shown in FIG. 17 in that the first relay main body 250X2 and the second relay main body 250X1 are integrated, and the excitation driving unit 300 is single. .

  The excitation drive unit 300 includes an excitation coil unit 301, a yoke (not shown), an armature 302, and a card 303. The card 303 straddles the movable spring member 255X2 and the movable spring member 255X1.

  On the single base 310, the 1st opening-and-closing part 11JX2 and the 2nd opening-and-closing part 11JX1 are arrange | positioned along with the X direction.

  When the single excitation drive unit 300 is driven, the movable spring members 225X2 and 225X1 are pushed in the Y2 direction via the card 303, and the first relay body 250X2 and the second relay body 250X1 are simultaneously closed. State.

  FIG. 22 is a perspective view showing the relay 10K according to the eighth embodiment of the present invention, with the case removed, and through the permanent magnets 30K and 40K.

  The relay 10K is different from the relay 10H shown in FIG. 17 in movable spring members 280X2 and 280X2.

  The movable spring member 280X2 has a size straddling the first and second fixed spring terminals 251X2 and 253X2, and the movable fixed contacts 256X2 and 257X2 are fixed to the Y2 side surface of the card 104KX2. It is. The card 104KX2 is fixed to a vertical portion of the L-shaped armature 103KX2.

  The movable spring member 280X1 has a size straddling the third and fourth fixed spring terminals 251X3 and 253X4, and the movable fixed contacts 256X3 and 257X4 are fixed to the Y2 side surface of the card 104JX1. It is. The card 104KX1 is fixed to a vertical portion of the L-shaped armature 103KX1.

  When the first relay body 250X2 and the second relay body 250X1 are simultaneously driven, the cards 104KX2 and 104KX1 are simultaneously displaced in the Y2 direction, and the movable spring members 280X2 and 280X1 are simultaneously displaced in the Y2 direction.

  Note that, like the relay 10J of the eighth embodiment, the two exciting coil units 105HX2 and 105HX1 of the relay 10K may be combined into a single exciting coil unit. In the relay having this configuration, one exciting coil unit is driven, and the movable spring members 280X1 and 280X2 are displaced.

  FIG. 23 is an exploded view of a relay 10L according to the ninth embodiment of the present invention. FIG. 24 is a cross-sectional view of the relay 10K.

  This relay 10K is different from the relay 10B shown in FIG. 8 in the case fixing structure.

  In the case 110K, the hole 320X2 near the lower end of the side plate 112K is engaged with the locking claw 310X2 of the base 100LX2 of the relay main body 130X2, and the hole 320X1 near the lower end of the side plate 113K is connected to the base 100LX1 of the relay main body 130X1. The hole 321 on the X2 side near the lower end of the central partition plate portion (insulating barrier) 115K is engaged with the locking claw portion 311X2 of the base 100LX2 of the relay main body 130X2, A hole 322 on the X1 side near the lower end of the central partition wall (insulating barrier) 115K is engaged with the locking claw 310X1 of the base 100LX1 of the relay main body 130X1, and is coupled to the relay main bodies 130X1 and 130X2. The coupling strength between the relay main bodies 130X1 and 130X2 and the case 110K is high. The partition wall portion 115K has a function of fixing the relay main bodies 130X1 and 130X2.

It is a figure which shows schematic structure of the principle of the relay which becomes this invention. It is a figure which shows the electric circuit apparatus containing the relay which becomes this invention. It is a figure which shows another schematic structure of the principle of the relay which becomes this invention. It is a perspective view which shows the relay which becomes Example 1 of this invention seeing through a case. It is a figure which shows the relay of FIG. It is a figure explaining the state of interruption | blocking of the circuit current by a relay. It is a figure which shows another example of the fixing structure to the case of a permanent magnet. It is a figure which shows the relay which becomes Example 2 of this invention. It is a perspective view which shows a relay main body. It is the schematic of the relay which becomes Example 3 of this invention. It is a perspective view which shows the relay which becomes Example 3 of this invention seeing through a case. It is a figure which shows the relay of FIG. It is a figure which shows the relay which becomes Example 4 of this invention. It is a figure which shows the relay which becomes Example 5 of this invention. It is a perspective view which shows the case which sees through the relay which becomes Example 6 of this invention. It is a figure which shows the positional relationship with respect to the 1st, 2nd gap of the 1st, 2nd permanent magnet piece in the relay shown in FIG. It is a perspective view which shows the relay which becomes Example 7 of this invention with the case removed, and seeing through a permanent magnet. FIG. 18 is an projection diagram showing the relay H of FIG. It is a figure which shows the connection of a relay, a power supply, and load while showing the relay of FIG. 17 roughly. It is a figure which shows the structure of the arc and arc voltage Varc which generate | occur | produce in a gap. It is a perspective view which shows the relay which becomes Example 8 of this invention with the case removed, and seeing through a permanent magnet. It is a perspective view which shows the relay which becomes Example 9 of this invention with the case removed, and seeing through a permanent magnet. It is a perspective view which decomposes | disassembles and shows the relay used as Example 10 of this invention. It is sectional drawing of the relay of FIG.

Explanation of symbols

10, 10X, 10A to 10H, 10J, 10K, 10L Relay 11 First opening / closing part 20 Second opening / closing part 12 First fixed contact 13 First fixed spring terminal 14 First movable contact 15 First movable Spring terminal 16 Excitation coil 17 First gap 22 Second fixed contact 23 Second fixed spring terminal 24 Second movable contact 25 Second movable spring terminal 27 Second gap 30, 30X First permanent magnet 40 , 40X Second permanent magnet 45 Permanent magnet 53, 54 Magnetic field 61-64 Terminal 70 Electrical circuit 71 DC power supply 72 Load circuit 73 First circuit wiring 74 Second circuit wiring 75 Circuit section 76 on the DC power supply side 76 Load circuit Circuit portion 80 printed circuit board 81-84 through hole 90, 91 arc 100 base 102 yoke 103 armature 104 card 105 Excitation coil unit 110 Case 111 Top plate portion 112, 113 Side plate portion 115H Partition plate portion 115K Partition wall portion 261 First gap portion 262 Second gap portion 263 Third gap portion 264 Fourth gap portion

Claims (15)

A first fixed spring terminal having a terminal connectable to circuit wiring; a first fixed contact provided on the first fixed spring terminal; a first movable spring terminal having a terminal connectable to the circuit wiring; A first opening / closing part having a first movable contact provided at a position facing the first fixed contact of the first movable spring terminal and in contact with the first fixed contact so as to be openable and closable ;
A second fixed spring terminal having a terminal connectable to the circuit wiring; a second fixed contact provided on the second fixed spring terminal; a second movable spring terminal having a terminal connectable to the circuit wiring; A second opening / closing part having a second movable contact provided at a position facing the second fixed contact of the second movable spring terminal and in contact with the second fixed contact so as to be openable and closable ;
An excitation driving unit that operates the first opening and closing unit and the second opening and closing unit simultaneously;
A magnetic field of the same direction is applied to a first gap between the first fixed contact and the first movable contact and a second gap between the second fixed contact and the second movable contact. It has a permanent magnet for a,
The first opening / closing portion and the second opening / closing portion are formed by opening / closing directions of the first fixed contact and the first movable contact, and opening / closing of the second fixed contact and the second movable contact. It is provided in parallel so that the direction is parallel,
The permanent magnet causes a magnetic field to act in a direction orthogonal to the opening / closing direction and the arrangement direction of the first opening / closing portion and the second opening / closing portion.
A relay characterized by that . The permanent magnet has a length equal to or longer than a distance between the first gap and the second gap in the arrangement direction of the first opening / closing portion and the second opening / closing portion.
The relay according to claim 1 . Before SL permanent magnet includes a first permanent magnet provided on the first opening and closing part and a second permanent magnet provided in the second closing part,
In the first permanent magnet, the center in the arrangement direction of the first opening / closing part and the second opening / closing part is shifted from the first gap in a direction in which Lorentz force acts in the first gap. In place,
The center of the second permanent magnet in the arrangement direction of the first opening / closing portion and the second opening / closing portion is shifted from the second gap in a direction in which Lorentz force acts in the second gap. In place
The relay according to claim 1 . The first opening and closing part before reporting, the second opening and closing part and the case covering the excitation driver possess,
The permanent magnet is fixed to the case.
Relay according to any one of claims 1 to 3, characterized in that.   A relay having a first relay body and a second relay body,
  The first relay body and the second relay body are:
  A first fixed spring terminal having a terminal connectable to circuit wiring; a first fixed contact provided on the first fixed spring terminal; a first movable spring terminal having a terminal connectable to the circuit wiring; A first opening / closing part having a first movable contact provided at a position facing the first fixed contact of the first movable spring terminal and in contact with the first fixed contact so as to be openable and closable;
  A second fixed spring terminal having a terminal connectable to the circuit wiring; a second fixed contact provided on the second fixed spring terminal; a second movable spring terminal having a terminal connectable to the circuit wiring; A second opening / closing part having a second movable contact provided at a position facing the second fixed contact of the second movable spring terminal and in contact with the second fixed contact so as to be openable and closable;
  An excitation driving unit that operates the first opening and closing unit and the second opening and closing unit simultaneously;
  A magnetic field of the same direction is applied to a first gap between the first fixed contact and the first movable contact and a second gap between the second fixed contact and the second movable contact. Each having a permanent magnet,
  The first opening / closing portion and the second opening / closing portion are formed by opening / closing directions of the first fixed contact and the first movable contact, and opening / closing of the second fixed contact and the second movable contact. It is provided in parallel so that the direction is parallel,
  The permanent magnet causes a magnetic field to act in a direction orthogonal to the opening / closing direction and the arrangement direction of the first opening / closing portion and the second opening / closing portion.
A relay characterized by that.   A case that covers the first relay body and the second relay body;
  The permanent magnet is fixed to the case.
The relay according to claim 5. The case will have a partition plate portion separating the first relay main body and the second relay main body
The relay according to claim 6 .   The case is
  A first partition plate that separates the first gap and the second gap of the first relay body;
  A second partition plate portion separating the first gap and the second gap of the second relay body;
The relay according to claim 6.   A relay having a first relay body and a second relay body,
  The first relay body and the second relay body are:
  A first fixed spring terminal having a terminal connectable to the circuit wiring; a first fixed contact provided on the first fixed spring terminal; a second fixed spring terminal having a terminal connectable to the circuit wiring; A second fixed contact provided on the second fixed spring terminal, a movable spring terminal, provided on the movable spring terminal, provided at a position facing the first fixed contact, and capable of opening and closing with the first fixed contact. A first movable contact that contacts the second fixed contact, and a second movable contact that is provided at a position facing the second fixed contact and that contacts the second fixed contact in an openable and closable manner. An opening and closing part;
  An excitation drive unit that simultaneously operates the opening and closing unit;
  A magnetic field of the same direction is applied to a first gap between the first fixed contact and the first movable contact and a second gap between the second fixed contact and the second movable contact. With permanent magnets,
Each with
  The opening / closing part is provided with an opening / closing direction of the first fixed contact and the first movable contact parallel to an opening / closing direction of the second fixed contact and the second movable contact,
  The permanent magnet acts a magnetic field in a direction orthogonal to the opening / closing direction and the arrangement direction of the first gap and the second gap.
A relay characterized by that.   A case that covers the first relay body and the second relay body;
  The permanent magnet is fixed to the case.
The relay according to claim 9. The relay according to any one of claims 1 to 10, wherein the permanent magnet is a samarium cobalt magnet, a neodymium magnet, or a ferrite magnet . The case is formed of a thermosetting resin.
The relay according to claim 4 , wherein the relay is any one of the above.   A circuit device having a relay according to any one of claims 1 to 4, which opens and closes a DC power source, a load to which power is supplied from the DC power source, and the DC power source and the load.
  The first opening / closing part of the relay is connected between an anode of the DC power source and one end of the load,
  The second opening / closing part of the relay is connected between a cathode of the DC power supply and the other end of the load.
A circuit device.   A circuit device having a relay according to any one of claims 5 to 8, which opens and closes a DC power supply, a load to which power is supplied from the DC power supply, and the DC power supply and the load.
  The relay is
  The first opening and closing portion and the second opening and closing portion of the first relay body are connected in parallel between the anode of the load and one end of the load;
  The first opening / closing part and the second opening / closing part of the second relay body are connected in parallel between the cathode of the load and the other end of the load.
A circuit device.   A circuit device having a DC power supply, a load to which power is supplied from the DC power supply, and a relay according to claim 9 or 10 that opens and closes between the DC power supply and the load,
  The relay is
  The first fixed spring terminal of the first relay body is connected to the anode of the DC power source, the second fixed spring terminal is connected to one end of the load;
  The first fixed spring terminal of the second relay body is connected to the cathode of the DC power source, and the second fixed spring terminal is connected to the other end of the load.
A circuit device.

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