EP2328165B1 - Elektromagnetisches Relais - Google Patents

Elektromagnetisches Relais Download PDF

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Publication number
EP2328165B1
EP2328165B1 EP10014802.2A EP10014802A EP2328165B1 EP 2328165 B1 EP2328165 B1 EP 2328165B1 EP 10014802 A EP10014802 A EP 10014802A EP 2328165 B1 EP2328165 B1 EP 2328165B1
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EP
European Patent Office
Prior art keywords
upstanding
electromagnetic relay
yoke
auxiliary yoke
attracted
Prior art date
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Active
Application number
EP10014802.2A
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English (en)
French (fr)
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EP2328165A1 (de
Inventor
Hiroyuki Kita
Katumi Tatibana
Yukiko Okumura
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Panasonic Corp
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Panasonic Corp
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Publication of EP2328165A1 publication Critical patent/EP2328165A1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/27—Relays with armature having two stable magnetic states and operated by change from one state to the other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/42—Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/643—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rotating or pivoting movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2236—Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature

Definitions

  • the present invention relates to an electromagnetic relay including an iron core, a bobbin arranged around the iron core, a conductive coil wound on the bobbin, an operation piece and a contact point mechanism.
  • an electromagnetic relay including an iron core, a bobbin arranged around the iron core, a conductive coil wound on the bobbin, an operation piece and a contact point mechanism.
  • the operation piece Upon supplying an electric current through the conductive coil, the operation piece is attracted to an end portion of the iron core.
  • the contact points of the contact point mechanism are connected to each other in a current-flowing state.
  • a conventional relay includes a plate-shaped base, an iron core provided on the base, a bobbin arranged around the iron core, a conductive coil wound on the bobbin, a yoke connected to one end portion of the iron core and an operation piece swingably supported on the yoke. As the operation piece is swung, the contact points of a contact point mechanism can make contact with or move away from each other.
  • the operation piece With this electromagnetic relay, the operation piece is attracted to the end portion of the iron core when an electric current flows through the conductive coil wound on the bobbin. Along with such movement of the operation piece, the contact points of the contact point mechanism are connected to each other in a current-flowing state (see, e.g., Japanese Patent Application Publication No. 2009-009710 ( JP2009-009710A )).
  • the electromagnetic relay disclosed in JP2009-009710A has a difficulty in reducing power consumption. Thus, a demand has existed for improvement of the electromagnetic relay.
  • Document JP 2006-196362 discloses a device according to the preamble of claim 1.
  • the present invention provides an electromagnetic relay capable of reducing power consumption.
  • an electromagnetic relay according to claim 1.
  • the auxiliary yoke may be arranged at the side of the upstanding portion close to or distant from the conductive coil.
  • the auxiliary yoke may be magnetically connected to the upstanding portion.
  • a separate member may be interposed between the auxiliary yoke and the upstanding portion as long as a desired magnetic flux can flow therethrough.
  • the auxiliary yoke may be either integrally formed with or separate from the upstanding portion.
  • Examples of the magnetic saturation portion include a through-hole, a recess portion or a slit formed to reduce the cross-sectional area of a specified section of the upstanding portion or the auxiliary yoke and a non-magnetic member or an insulating member provided in the upstanding portion or the auxiliary yoke.
  • the permanent magnet arranged between the upstanding portion and the auxiliary yoke can keep the second attracted portion either spaced apart from or attracted to the other end portion of the iron core.
  • the electric power is consumed only in the time period from the operation starting time of the operation piece to the operation ending time thereof. Therefore, it is possible to reduce power consumption as compared with the conventional electromagnetic relays.
  • the electromagnetic relay of the present invention is capable of reducing the required electric power as compared with the conventional electromagnetic relays, it is possible to employ a coil of small size and to reduce the overall size of the electromagnetic relay.
  • the auxiliary yoke may be arranged at the same side of the upstanding portion as the conductive coil and the magnetic saturation portion may be provided in the upstanding portion.
  • the first attracted portion can be enlarged as compared with the case where the auxiliary yoke is arranged at the opposite side of the upstanding portion from the conductive coil. This makes it possible to simplify the structure of the operation piece.
  • the primary yoke and the auxiliary yoke are formed into a single piece.
  • the magnetic saturation portion may be formed by reducing the cross-sectional area of a specified section of the upstanding portion.
  • the magnetic saturation portion includes, e.g., a through-hole, a recess portion or a slit. Therefore, it is possible to obtain the magnetic saturation portion in a simple and reliable manner as compared with the case where a non-magnetic member or an insulating member is provided as the magnetic saturation portion.
  • the magnetic saturation portion may include a through-hole formed in the upstanding portion.
  • At least one of opposite surfaces of the upstanding portion and the auxiliary yoke may include a step portion for holding the permanent magnet in position.
  • examples of the step portion include a recess portion or a raised portion with which the end surfaces of the permanent magnet can engage. There is no need for the step portion to engage with all the end surfaces of the permanent magnet.
  • the step portion may be arranged in any arbitrary position if it can hold the permanent magnet in position.
  • the permanent magnet is kept in position by the step portion. This reduces the possibility that the permanent magnet is moved out of its position by vibration or other causes, which makes it possible to maintain the initial performance of the permanent magnet for a prolonged period of time.
  • the step portion may include a recess portion formed in one of the upstanding portion and the auxiliary yoke, or a raised portion formed in one of the upstanding portion and the auxiliary yoke.
  • the electromagnetic relay of the present invention provides an advantageous effect in that the power consumption when the attracted portion is attracted to the other end portion of the iron core can be reduced by arranging the permanent magnet between the upstanding portion and the auxiliary yoke.
  • the electromagnetic relay of the present invention is capable of reducing the required electric power as compared with the conventional electromagnetic relays. This provides an advantageous effect in that it is possible to employ a coil of small size and to reduce the overall size of the electromagnetic relay.
  • the electromagnetic relay 10 includes a base 11, an iron core 12 erected from the base 11, a bobbin 13 provided around the iron core 12, a primary yoke 14 provided in a spaced-apart relationship with the bobbin 13, an operation piece 15 supported by the primary yoke 14, a contact point mechanism 16 supported by the operation piece 15, an auxiliary yoke 17 arranged in an opposing relationship with the primary yoke 14, a permanent magnet 18 provided between the auxiliary yoke 17 and the primary yoke 14, a magnetic saturation portion 21 provided in the primary yoke 14 and a cover 22 arranged on the base 11 for accommodating the iron core 12, the bobbin 13, the primary yoke 14, the operation piece 15, the contact point mechanism 16, the auxiliary yoke 17, the permanent magnet 18 and the magnetic saturation portion 21.
  • the iron core 12 is fixed at one end to the base 11 and extends rectilinearly from the base 11. That is to say, the iron core 12 is raised upright from the base 11.
  • the bobbin 13 is made of an insulating material and is coaxially provided with respect to the iron core 12 so that it can cover the iron core 12.
  • a conductive coil 24 is wound on the bobbin 13.
  • the primary yoke 14 includes a base end portion 26 connected to one end portion 12a of the iron core 12 and extending in the radial direction of the bobbin 13 and an upstanding portion 27 connected to the base end portion 26 and arranged parallel to the iron core 12.
  • the primary yoke 14 having the base end portion 26 and the upstanding portion 27 has a substantially L-like shape when seen in a side view.
  • the operation piece 15 includes a first attracted portion 31 extending along the upstanding portion 27 and a second attracted portion 32 moving toward or away from the other end portion 12b of the iron core 12.
  • the first attracted portion 31 and the second attracted portion 32 are connected to each other to form a substantially L-like shape.
  • the operation piece 15 is a member swinging about a tip end 27a of the upstanding portion 27.
  • the contact point mechanism 16 includes a card portion 34, a movable terminal 35 connected to the operation piece 15 through the card portion 34 and a fixed terminal 36 opposing to the movable terminal 35. Responsive to the operation of the operation piece 15, the card portion 34 of the contact point mechanism 16 is swung about the pivot shaft 34a. The movable terminal 35 moves together with the card portion 34. The movable terminal 35 is kept either in a contact state or a non-contact state with respect to the fixed terminal 36.
  • the contact point 37 (composed of the fixed terminal 36 and the movable terminal 35) comes into a current-flowing state. If the fixed terminal 36 and the movable terminal 35 are in the non-contact state, the contact point 37 comes into a current-interrupting state.
  • the auxiliary yoke 17 is arranged at the same side of the upstanding portion 27 as the conductive coil 24 while extending along the upstanding portion 27 (see Fig. 3 ).
  • the auxiliary yoke 17 is magnetically connected to the upstanding portion 27 through a magnetic connection portion 41. That is to say, the upstanding portion 27 (the primary yoke 14) and the auxiliary yoke 17 are integrally formed with each other through the magnetic connection portion 41.
  • the auxiliary yoke 17 helps prevent the fabrication process from becoming complicated while reducing the number of parts.
  • a step portion 42 having a substantially U-like shape is formed on a surface 17a of the auxiliary yoke 17 opposing to the upstanding portion 27 of the primary yoke 14, thereby defining a recess portion 43 (see Fig. 7 ) for accommodating the permanent magnet 18.
  • the auxiliary yoke 17 includes a bent portion 44 provided below the recess portion 43 and near the magnetic connection portion 41. The bent portion 44 is bent to extend away from the upstanding portion 27.
  • an accommodation space 45 (see Fig. 3 ) for accommodating the permanent magnet 18 is defined by the recess portion 43 and the primary yoke 14 in the state where the auxiliary yoke 17 is opposed to the primary yoke 14.
  • the accommodation space 45 has an upper opening 46 ( Fig. 3 ) through which the permanent magnet 18 can be inserted into the accommodation space 45.
  • the opening 46 is not necessarily required in the present invention but may be omitted by appropriately changing the structure or fabrication process of the electromagnetic relay 10.
  • the permanent magnet 18 By arranging the permanent magnet 18 within the recess portion 43 of the auxiliary yoke 17, it is possible to keep the permanent magnet 18 in a specified position in the step portion 42. This reduces the possibility that the permanent magnet 18 is moved out of its position by vibration or other causes, which makes it possible to maintain the initial performance of the permanent magnet 18 for a prolonged period of time.
  • the positional deviation of the permanent magnet 18 can be prevented by forming the recess portion 43 in the auxiliary yoke 17 to obtain the step portion 42, it is possible to suppress deviation of the attraction force (magnetic force) from a target value and to obtain stable operation characteristics.
  • the permanent magnet 18 is formed into a substantially rectangular shape and inserted into the accommodation space 45 through the opening 46 shown in Fig. 3 . Thus, the permanent magnet 18 is arranged between the upstanding portion 27 and the auxiliary yoke 17.
  • the magnetic saturation portion 21 is provided between a portion 47 of the upstanding portion 27 corresponding to the permanent magnet 18 and the magnetic connection portion 41 at the side of the upstanding portion 27 connected to the first attracted portion 31.
  • the magnetic saturation portion 21 is a substantially rectangular opening formed in the upstanding portion 27.
  • the magnetic saturation portion 21 is provided to reduce the cross-sectional area in a specified section of the upstanding portion 27, thereby keeping the magnetic flux flowing through the upstanding portion 27 in a saturated state.
  • the magnetic saturation portion 21 By forming the magnetic saturation portion 21 in the form of a through-hole, it is possible to obtain the magnetic saturation portion 21 in a simple and reliable manner as compared with the case where a non-magnetic member or an insulating member is provided as the magnetic saturation portion.
  • the magnetic saturation portion 21 in the form of the through-hole, a desired magnetic saturation degree can be obtained by appropriately selecting the position, shape and dimension of the through-hole.
  • the auxiliary yoke 17 is arranged at the same side of the upstanding portion 27 as the conductive coil 24, and the magnetic saturation portion 21 is provided in the upstanding portion 27. Therefore, the first attracted portion 31 can be enlarged in proportion to the step distance of the bent portion 44 from the upstanding portion 27 as compared with the case where the auxiliary yoke 17 is arranged at the opposite side of the upstanding portion 27 from the conductive coil 24.
  • Use of this configuration in the electromagnetic relay 10 makes it possible to simplify the structure of the operation piece 15.
  • the cover 22 is arranged on the base 11 and formed into a substantially rectangular parallelepiped shape (box-like shape) so that it can accommodate the iron core 12, the bobbin 13, the primary yoke 14, the operation piece 15, the contact point mechanism 16, the auxiliary yoke 17, the permanent magnet 18 and the magnetic saturation portion 21.
  • a planar material (metal plate) is first punched into a specified shape, thereby forming the auxiliary yoke 17, the primary yoke 14 and the magnetic connection portion 41. Then, the step portion 42 is press-formed into a substantially U-like shape on the surface 17a of the auxiliary yoke 17 opposing to the upstanding portion 27 of the primary yoke 14, thus forming the recess portion 43 for accommodation of the permanent magnet 18.
  • the recess portion 43 may be formed simultaneously with punching the planar material (metal plate) into a specified shape.
  • the accommodation space 45 (see Fig. 3 ) for accommodating the permanent magnet 18 can be defined between the recess portion 43 and the primary yoke 14 by bringing the auxiliary yoke 17 into an opposing relationship with the primary yoke 14.
  • the base end portion 26 of the primary yoke 14 is bent toward the upstanding portion 27 at a right angle so that the primary yoke 14 having the base end portion 26 and the upstanding portion 27 can have a substantially L-like shape when seen in a side view.
  • the permanent magnet 18 is inserted into the accommodation space 45 through the opening 46 (see Fig. 3 ) so that it can be held within the recess portion 43 in the accommodation space 45.
  • the operation piece 15 is arranged in such a state that the second attracted portion 32 thereof is spaced apart from the other end portion 12b of the iron core 12.
  • the first attracted portion 31 of the operation piece 15 is in contact with the upstanding portion 27.
  • the magnetic flux 50 of the permanent magnet 18 flows through the upstanding portion 27 of the primary yoke 14, the operation piece 15, the magnetic connection portion 41 and the auxiliary yoke 17. Consequently, the second attracted portion 32 of the operation piece 15 is kept spaced apart from the other end portion 12b of the iron core 12 under the influence of the magnetic flux 50 of the permanent magnet 18.
  • the conductive coil 24 is kept non-excited as illustrated in Fig. 8C .
  • the magnetic flux 50 of the permanent magnet 18 flows through the upstanding portion 27 of the primary yoke 14, the operation piece 15, the iron core 12, the base end portion 26 of the primary yoke 14, the magnetic connection portion 41 and the auxiliary yoke 17. Consequently, the second attracted portion 32 of the operation piece 15 is kept attracted to the other end portion 12b of the iron core 12 under the influence of the magnetic flux 50 of the permanent magnet 18.
  • the second attracted portion 32 is attracted to the other end portion 12b, so that the contact point 37 (namely, the fixed terminal 36 and the movable terminal 35) shown in Fig. 3 is kept in a current-flowing state.
  • the operation piece 15 is arranged in such a state that the second attracted portion 32 thereof is attracted to the other end portion 12b of the iron core 12.
  • the first attracted portion 31 of the operation piece 15 is separated away from the upstanding portion 27.
  • the magnetic flux 50 of the permanent magnet 18 flows through the upstanding portion 27 of the primary yoke 14, the operation piece 15, the iron core 12, the base end portion 26 of the primary yoke 14, the magnetic connection portion 41 and the auxiliary yoke 17. Consequently, the second attracted portion 32 of the operation piece 15 is kept attracted to the other end portion 12b of the iron core 12 under the influence of the magnetic flux 50 of the permanent magnet 18.
  • the conductive coil 24 is kept non-excited as illustrated in Fig. 9C .
  • the magnetic flux 50 of the permanent magnet 18 flows through the upstanding portion 27 of the primary yoke 14, the operation piece 15, the magnetic connection portion 41 and the auxiliary yoke 17. Consequently, the first attracted portion 31 of the operation piece 15 is kept in contact with the upstanding portion 27 (namely, the second attracted portion 32 of the operation piece 15 is kept spaced apart from the other end portion 12b of the iron core 12) under the influence of the magnetic flux 50 of the permanent magnet 18.
  • the second attracted portion 32 is spaced apart from the other end portion 12b, so that the contact point 37 (namely, the fixed terminal 36 and the movable terminal 35) shown in Fig. 3 is kept in a current-interrupting state.
  • the permanent magnet 18 arranged between the upstanding portion 27 and the auxiliary yoke 17 is capable of keeping the second attracted portion 32 spaced apart from the other end portion 12b of the iron core 12 even if the conductive coil 24 is not excited.
  • the permanent magnet 18 is capable of keeping the second attracted portion 32 attracted to the other end portion 12b of the iron core 12 even when the conductive coil 24 is not excited.
  • the conductive coil 24 is excited (namely, the electric power is consumed) only in the time period from the operation starting time of the operation piece 15 to the operation ending time thereof. Therefore, as compared with the conventional electromagnetic relays, it is possible to reduce power consumption when the second attracted portion 32 is kept spaced apart from the other end portion 12b of the iron core 12 or when the second attracted portion 32 is kept attracted to the other end portion 12b of the iron core 12.
  • the electromagnetic relay 10 is capable of reducing the required electric power as compared with the conventional electromagnetic relays, it is possible to employ a coil of small size and to reduce the overall size of the electromagnetic relay 10.
  • the primary yoke 14 and the auxiliary yoke 17 according to the second embodiment are formed from separate members. Other configurations remain the same as the first embodiment.
  • the primary yoke 14 and the auxiliary yoke 17 By forming the primary yoke 14 and the auxiliary yoke 17 from separate members, it becomes possible make the primary yoke 14 and the auxiliary yoke 17 differ in thickness. This makes it possible to control the magnetic force to have a desired value.
  • the upstanding portion 60 of the third embodiment differs from the upstanding portion 27 of the first embodiment in that the magnetic saturation portion 21 provided in the upstanding portion 27 of the first embodiment is changed to a magnetic saturation portion 61.
  • Other configurations remain the same as the first embodiment.
  • the magnetic saturation portion 61 of the present embodiment is a recess portion formed on the surface 62 of the upstanding portion 27 opposing to the operation piece 15 shown in Fig. 3 .
  • the recess portion as the magnetic saturation portion 61 in the upstanding portion 60, it is possible to reduce the cross-sectional area in a specified section of the upstanding portion 60 and to obtain the magnetic saturation portion 61 in a simple and reliable manner as compared with the case where a non-magnetic member or an insulating member is provided as the magnetic saturation portion.
  • the magnetic saturation portion 61 in the form of the recess portion, a desired magnetic saturation degree can be obtained by appropriately selecting the position, shape and dimension of the recess portion.
  • the upstanding portion 70 of the fourth embodiment differs from the upstanding portion 27 of the first embodiment in that the magnetic saturation portion 21 provided in the upstanding portion 27 of the first embodiment is changed to a magnetic saturation portion 71.
  • Other configurations remain the same as the first embodiment.
  • the magnetic saturation portion 71 of the present embodiment includes a plurality of circular through-holes formed in the upstanding portion 70.
  • the through-holes as the magnetic saturation portion 71 in the upstanding portion 70, it is possible to reduce the cross-sectional area in a specified section of the upstanding portion 70 and to obtain the magnetic saturation portion 71 in a simple and reliable manner as compared with the case where a non-magnetic member or an insulating member is provided as the magnetic saturation portion.
  • the magnetic saturation portion 71 in the form of the through-holes, a desired magnetic saturation degree can be obtained by appropriately selecting the position, shape and dimension of the through-holes.
  • the upstanding portion 80 of the fifth embodiment differs from the upstanding portion 27 of the first embodiment in that the magnetic saturation portion 21 provided in the upstanding portion 27 of the first embodiment is changed to a magnetic saturation portion 81.
  • Other configurations remain the same as the first embodiment.
  • the magnetic saturation portion 81 of the present embodiment includes a plurality of circular blind holes formed on the surface 82 of the upstanding portion 80 opposing to the operation piece 15 shown in Fig. 3 .
  • the blind holes as the magnetic saturation portion 81 in the upstanding portion 80, it is possible to reduce the cross-sectional area in a specified section of the upstanding portion 80 and to obtain the magnetic saturation portion 81 in a simple and reliable manner as compared with the case where a non-magnetic member or an insulating member is provided as the magnetic saturation portion.
  • the magnetic saturation portion 81 is formed in the form of blind holes, a desired magnetic saturation degree can be obtained by appropriately selecting the position, shape and dimension of the blind holes.
  • the auxiliary yoke 90 of the sixth embodiment differs from the auxiliary yoke 17 of the first embodiment in that the step portion 42 provided in the auxiliary yoke 17 of the first embodiment is changed to a step portion 92.
  • Other configurations remain the same as the first embodiment.
  • the step portion 92 is formed into a substantially L-like shape on the surface 94 of the auxiliary yoke 90 opposing to the upstanding portion 27 of the primary yoke 14 shown in Fig. 3 .
  • a recess portion 93 for holding the permanent magnet 18 is defined by forming the step portion 93 on the surface 94.
  • step portion 92 is formed into the substantially L—like shape in the auxiliary yoke 90 of the sixth embodiment, it is possible to insert the permanent magnet 18 from one lateral side of the auxiliary yoke 90. This makes it possible to freely design the insertion step of the permanent magnet 18, e.g., to perform the insertion of the permanent magnet 18 at the final step, thereby simplifying the fabrication process.
  • the auxiliary yoke 100 of the seventh embodiment differs from the auxiliary yoke 17 of the first embodiment in that the step portion 42 provided in the auxiliary yoke 17 of the first embodiment is changed to a step portion 102.
  • Other configurations remain the same as the first embodiment.
  • the step portion 102 includes a plurality of hemispherical dowels (raised portions) formed on the surface 103 of the auxiliary yoke 100 opposing to the upstanding portion 27 of the primary yoke 14 shown in Fig. 3 .
  • the step portion 102 By forming the step portion 102 on the surface 103, it is possible for the step portion 102 to hold the permanent magnet 18 in position.
  • the step portion 102 of the auxiliary yoke 100 of the seventh embodiment includes hemispherical dowels, it is possible to avoid reduction in the cross-sectional area of a magnetic path caused by the depth of a recess portion as compared with the case where the recess portion is formed in the auxiliary yoke.
  • the primary yoke 14 and the auxiliary yoke 17 of the eighth embodiment differ from those of the first embodiment in that the upstanding portion 27 of the primary yoke 14 is arranged near the bobbin 13, the auxiliary yoke 17 arranged near the operation piece 15 and the magnetic saturation portion 21 formed in the auxiliary yoke 17.
  • Other configurations remain the same as the first embodiment.
  • the eighth embodiment of this configuration can provide the same advantageous effects as provided by the first embodiment set forth earlier.
  • the electromagnetic relay 10 according to the present invention is not limited to the first through eighth embodiments described above but may be changed or modified in many different forms.
  • the present invention is not limited thereto.
  • the magnetic saturation portions may be formed in the form of slits or the like.
  • step portions 42, 92 and 102 are formed in the auxiliary yokes 17, 90 and 100 according to the first, sixth and seventh embodiments, the present invention is not limited thereto.
  • the step portions 42, 92 and 102 may be formed in the upstanding portions 27.
  • the shapes and configurations of the iron core 12, the bobbin 13, the primary yoke 14, the operation piece 15, the contact point mechanism 16, the auxiliary yokes 17, 90 and 100, the permanent magnet 18, the magnetic saturation portions 21, 61, 71 and 81, the conductive coil 24, the upstanding portions 27, 60, 70 and 80, the first attracted portion 31, the second attracted portion 32, the magnetic connection portion 41, the step portions 42, 92 and 102 and the recess portion 43 employed in the first through eighth embodiments are not limited to the illustrated ones but may be appropriately changed.

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Claims (11)

  1. Elektromagnetisches Relais, umfassend:
    einen Eisenkern (12);
    eine Spule (13), die um den Eisenkern angeordnet ist und mit einer leitenden Wicklung umwunden ist;
    ein Primärjoch (14), der einen Basisendbereich (26), der mit einem Endbereich des Eisenkerns verbunden ist und sich in radialer Richtung von der Spule erstreckt, und einen aufrecht stehenden Bereich, der mit dem Basisendbereich verbunden ist und parallel zu dem Eisenkern angeordnet ist, umfasst;
    ein Funktionsteil (15), das einen ersten Anziehungsbereich (31), der sich entlang des aufrecht stehenden Bereichs (27) erstreckt, und einen zweiten Anziehungsbereich (32), der beweglich zu oder weg von dem anderen Endbereich des Eisenkerns ist, umfasst, wobei der erste Anziehungsbereich und der zweite Anziehungsbereich in einer im Wesentlichen L-artigen Form miteinander verbunden sind, wobei das Funktionsteil so angeordnet ist, dass es um ein Kippende des aufrecht stehenden Bereichs schwingt;
    einen Kontaktpunktmechanismus (16), der durch den Betrieb des Funktionsteils angetrieben wird; gekennzeichnet durch
    ein Hilfsjoch (17), der sich entlang des aufrecht stehenden Bereichs des Primärjochs erstreckt und magnetisch mit dem aufrecht stehenden Bereich durch einen magnetischen Verbindungsbereich (41) verbunden ist;
    einen Permanentmagneten (18), der zwischen dem aufrecht stehenden Bereich des Primärjochs und dem Hilfsjoch angeordnet ist; und
    einen magnetischen Sättigungsbereich, der zwischen einem Bereich des aufrecht stehenden Bereichs oder dem Hilfsjoch, der nahe zu dem ersten Anziehungsbereich des Funktionsteils angeordnet ist, der dem Permanentmagneten entspricht, und dem magnetischen Verbindungsbereich vorgesehen ist,
    wobei das elektromagnetische Relais so gestaltet ist, dass es den magnetischen Fluss von dem Permanentmagneten gestattet, durch den aufrecht stehenden Bereich (27), das Funktionsteil, den magnetischen Verbindungsbereich und das Hilfsjoch zu fließen, wenn der zweite Anziehungsbereich von dem anderen Endbereich des Eisenkerns getrennt angeordnet ist, wobei die leitende Wicklung nicht erregt gehalten wird, und durch den aufrecht stehenden Bereich, das Funktionsteil, den Eisenkern, den Basisendbereich, den magnetischen Verbindungsbereich und das Hilfsjoch zu fließen, wenn der zweite Anziehungsbereich zu dem anderen Endbereich des Eisenkerns angezogen wird, wobei die leitende Spule nicht erregt gehalten wird,
    wobei das Primärjoch und das Hilfsjoch aus einem Stück ausgebildet sind.
  2. Elektromagnetisches Relais nach Anspruch 1, bei welchem das Hilfsjoch an der gleichen Seite des aufrecht stehenden Bereichs wie die leitende Wicklung angeordnet ist und der magnetische Sättigungsbereich im aufrecht stehenden Bereich bereitgestellt ist.
  3. Elektromagnetisches Relais nach Anspruch 2, bei welchem der magnetische Sättigungsbereich durch Reduzieren der Querschnittsfläche eines bestimmten Abschnitts des aufrecht stehenden Bereichs ausgebildet ist.
  4. Elektromagnetisches Relais nach einem der Ansprüche 2 oder 3, bei welchem der magnetische Sättigungsbereich ein Durchgangsloch umfasst, das in dem aufrecht stehenden Bereich ausgebildet ist.
  5. Elektromagnetisches Relais nach einem der Ansprüche 1 bis 4, bei welchem wenigstens eine von entgegen gesetzten Oberflächen des aufrecht stehenden Bereichs und des Hilfsjochs einen Stufenbereich umfasst, um den Permanentmagnet in Position zu halten.
  6. Elektromagnetisches Relais nach Anspruch 5, bei welchem der Stufenbereich einen Aussparungsbereich umfasst, der in einem von dem aufrecht stehenden Bereich und dem Hilfsjoch ausgebildet ist.
  7. Elektromagnetisches Relais nach Anspruch 5, bei welchem der Stufenbereich einen gehobenen Bereich umfasst, der in einem von dem aufrecht stehenden Bereich und dem Hilfsjoch ausgebildet ist.
  8. Elektromagnetisches Relais nach einem der Ansprüche 1 bis 7, bei welchem das Primärjoch, das Hilfsjoch und der magnetische Verbindungsbereich durch Biegen einer ebenen Metallplatte ausgebildet werden.
  9. Elektromagnetisches Relais nach einem der Ansprüche 1 bis 3, bei welchem der magnetische Sättigungsbereich mehrere kreisförmige Durchgangslöcher umfasst, die in dem aufrecht stehenden Bereich ausgebildet sind.
  10. Elektromagnetisches Relais nach einem der Ansprüche 1 bis 3, bei welchem der magnetische Sättigungsbereich mehrere kreisförmige Sacklöcher umfasst, die in dem aufrecht stehenden Bereich ausgebildet sind.
  11. Elektromagnetisches Relais nach Anspruch 5, bei welchem der Stufenbereich eine L-artige Form ist, die in einem von dem aufrecht stehenden Bereich und dem Hilfsjoch ausgebildet ist.
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JP6024287B2 (ja) * 2012-08-24 2016-11-16 オムロン株式会社 電磁石装置、その組立方法およびそれを用いた電磁継電器
JP6461484B2 (ja) * 2014-04-17 2019-01-30 富士通コンポーネント株式会社 電磁継電器
CN105244233B (zh) * 2015-10-15 2017-09-29 首瑞（天津）电气设备有限公司 一种磁保持继电器动触头推动机构
JP6897409B2 (ja) * 2017-08-04 2021-06-30 オムロン株式会社 電磁継電器
CN107910168B (zh) * 2017-12-01 2023-08-08 广东电网有限责任公司电力科学研究院 一种试验铁芯
JP7068929B2 (ja) * 2018-05-31 2022-05-17 富士通コンポーネント株式会社 電磁継電器
CN114156122B (zh) * 2021-12-15 2024-06-14 正勤电气(沈阳)有限公司 一种分离磁路型双稳态永磁操动机构
CN118553564B (zh) * 2024-07-24 2024-10-11 宁波杰盈电器科技有限公司 一种磁保持继电器

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EP0836212B1 (de) * 1996-10-08 2004-03-24 TYCO Electronics Austria GmbH Bistabiles Elektromagnetsystem für ein Relais
JP2006196362A (ja) * 2005-01-14 2006-07-27 Matsushita Electric Works Ltd ラッチ式リレー

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ATA126182A (de) * 1982-03-30 1987-06-15 Schrack Elektronik Ag Elektromagnetisches relais
JPH01113306U (de) * 1988-01-25 1989-07-31
JPH08180785A (ja) * 1994-12-26 1996-07-12 Nippondenso Co Ltd 電磁継電器
JP2006040661A (ja) * 2004-07-26 2006-02-09 Matsushita Electric Works Ltd ラッチングリレー
JP2009009710A (ja) 2007-06-26 2009-01-15 Panasonic Electric Works Co Ltd 電磁リレー
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EP0836212B1 (de) * 1996-10-08 2004-03-24 TYCO Electronics Austria GmbH Bistabiles Elektromagnetsystem für ein Relais
JP2006196362A (ja) * 2005-01-14 2006-07-27 Matsushita Electric Works Ltd ラッチ式リレー

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JP5446780B2 (ja) 2014-03-19
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EP2328165A1 (de) 2011-06-01
TW201131610A (en) 2011-09-16
CN102074418B (zh) 2013-10-23

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