JP2006040661A - Latching relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a latching relay the stable operation of which is realized by using a simple magnetic circuit, which keeps a contact point state in such a manner that a switching of a contact point is made by supplying a current in the direction opposite to a direction supplied at a previous time into a coil, and after the switching, the contact switch state is kept by the magnetic force of a permanent magnet. <P>SOLUTION: A method of manufacturing the latching relay comprises the following steps of: forming a yoke 23 in a U shape; inserting one side leg 23a into the hole of a coil bobbin 22; making a hole 23e in the other side leg 23b and fitting a permanent magnet 24 into the hole; forming an amateur 25 in a dog leg shape; holding a bending portion 25c rockably at the top of the other side leg 23b of the yoke 23; making one side 25a facing to between both tops of the legs 23a, 23b of the yoke 23; and making the other side 25b extend beyond the permanent magnet 24 from the top of the other side leg portion 23b of the yoke 23. Therefor, the latching relay is constituted by the three parts of the permanent magnet 24, the yoke 23 and the amateur 25 without using such parts as springs etc. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a latching relay in which contact switching is performed by supplying a current in the opposite direction to that at the time of previous supply to the coil, and the contact state is maintained by the magnetic force of a permanent magnet after switching. Concerning configuration.

As described above, latching relays that do not need to be energized at all times in order to maintain a contact state by providing a permanent magnet in a magnetic circuit have been proposed in various ways in Patent Documents 1 to 3, for example. Yes.
JP-A 61-260523 Japanese Utility Model Publication No. 52-40357 JP-A-10-125200

  However, in each of the above-described prior arts, other parts such as a spring are used in combination to maintain the switching state by simply inserting a permanent magnet in the yoke, and the magnetic circuit is complicated.

  An object of the present invention is to provide a latching relay capable of realizing a stable operation with a simple magnetic circuit.

  The latching relay of the present invention is a latching relay in which contact switching is performed by supplying a current in the opposite direction to that of the previous supply to the coil, and the contact state is maintained by the magnetic force of a permanent magnet after switching. The yoke is formed in a U-shape or a U-shape, and one leg is inserted into the coil bobbin, and at least a part of the other leg of the yoke is replaced, and in the longitudinal direction of the leg The permanent magnet that is polarized is generally formed in an L shape or a U shape, and a bent portion is swingably supported at the tip of the other leg portion of the yoke. An arm that faces between the tips of both legs of the yoke and the other side extends from the tip of the other leg of the yoke beyond the permanent magnet, and is fixed to the armature, and presses and fixes the movable contact. Including cards that contact / separate contacts And wherein the door.

  According to the above configuration, the switching is performed in the latching relay in which the contact is switched by supplying the current in the direction opposite to that at the previous supply to the coil, and the contact is maintained by the magnetic force of the permanent magnet after the switching. In order to stably maintain the subsequent state without power supply, the arrangement of permanent magnets and the magnetic path configuration are devised. Specifically, the yoke is generally formed in a U-shape or a U-shape, and one leg portion is inserted through the coil bobbin, and the other leg portion is permanently provided with a hole. At least a part of the magnet is replaced with a permanent magnet, for example, by inserting a magnet or by cutting off the tip side and adding a permanent magnet instead. On the other hand, the armature is generally formed in an L shape or a dogleg shape, a bent portion is swingably supported at the tip of the other leg portion of the yoke, and one side is the yoke. And the other side extends from the tip of the other leg of the yoke beyond the permanent magnet.

  Therefore, since the permanent magnet is polarized in the longitudinal direction of the leg portion, for example, in a state where one side of the amateur is separated from the tip of one leg portion of the yoke, the other side of the amateur is the permanent magnet. The other leg of the yoke including the permanent magnet, the bent part of the amateur, the other side of the amateur, and the other leg of the yoke are attracted to the other leg of the yoke by the magnetic flux generated in Even if it is not energized, the amateur's state is maintained.

  When the coil is excited by supplying a current in one direction, the generated magnetic flux is converted into one leg of the yoke-the bent part of the yoke-the other leg of the yoke-the other side of the armature- Amateur bend-one side of the amateur-flows in the path of one leg of the yoke, the other leg of the yoke-the bend of the amateur-the other side of the amateur-the other leg of the yoke The armature of the armature is larger than the magnetic flux of the permanent magnet flowing along the path of the armature, and one side of the armature is attracted to the tip of one leg of the yoke, and the other side is separated from the other leg of the yoke. As a result, the magnetic flux generated by the permanent magnet is converted into the other leg portion of the yoke including the permanent magnet-the bending portion of the amateur-one side of the amateur-one leg portion of the yoke-the bending portion of the yoke- Even if it flows through the path of the other leg of the yoke and is not energized, the amateur state is maintained thereafter.

  On the other hand, when a current in the reverse direction is supplied to the coil and excited, the generated magnetic flux is applied to one leg of the yoke-one side of the amateur-the bent part of the amateur-the other side of the amateur- The other leg of the yoke-the bent part of the yoke-the flow of one leg of the yoke flows in the path, and the magnetic flux generated by the permanent magnet is reversed between one leg of the yoke and one side of the amateur Even if it flows in the direction, the magnetic flux generated by the coil is larger than that, so the other side of the armature is attracted to the other leg of the yoke, and one side of the armature is one side of the yoke Move away from the tip of the leg. As a result, the magnetic flux generated by the permanent magnet flows along the path of the other leg of the yoke including the permanent magnet, the bent part of the amateur, the other side of the amateur, and the other leg of the yoke. Even after energization, the amateur state is maintained.

  The amateur is provided with a card that presses the movable contact to contact / separate the fixed contact, and the contact is opened and closed by this card.

  In this way, the latching relay that can maintain the contact state by the magnetic force of the permanent magnet even when not energized can be roughly composed of three parts, a permanent magnet, a yoke, and an amateur. A stable operation can be realized with a simple magnetic circuit without using it.

  In the latching relay of the present invention, the permanent magnet is fitted into a notch formed by cutting from one side of the other leg of the yoke.

  According to said structure, the other leg part of the said yoke is notched from one side part, but the notch part is formed, and the said permanent magnet is engage | inserted by the notch part. That is, the other leg portion of the yoke has a cantilever-like tip end, and a permanent magnet is fitted between the tip end portion and the base end portion.

  Therefore, the distal end side portion and the proximal end side portion are connected by a thin beam portion, and a short circuit of the magnetic flux of the permanent magnet fitted therebetween can be suppressed.

  Furthermore, in the latching relay of the present invention, the permanent magnet is fitted into a recess formed in the other leg portion of the yoke.

  According to the above configuration, if the cross-sectional area of the recess is small, a lot of magnetic flux will not be short-circuited, and the processing of the yoke is simpler than the case of forming the hole by punching, and the processing cost Can be reduced.

  Further, in the latching relay of the present invention, the permanent magnet is fitted into a hole drilled in the other leg portion of the yoke, and a portion on the distal end side and a proximal end side of the yoke around the hole. A connecting portion that connects the portions is formed thin.

  According to said structure, the hole is drilled in the other leg part of the said yoke, and the said permanent magnet is engage | inserted in the hole. Then, around the hole, a connecting portion that connects the portion on the distal end side and the portion on the proximal end side of the yoke is formed thin by forming a V groove or a C groove.

  Therefore, the distal end side portion and the proximal end side portion are connected by the thin connecting portion, and a short circuit of the magnetic flux of the permanent magnet fitted therebetween can be suppressed.

  Furthermore, in the latching relay of the present invention, the hole is formed in a tapered shape.

  According to said structure, when a permanent magnet is inserted in a taper-shaped hole, it will fit without gap. As a result, the air gap can be reduced, the magnetic resistance can be reduced, and it can also be used for positioning the permanent magnet, so that assembly is easy.

  In the latching relay of the present invention, a bracket for receiving the inserted permanent magnet is provided behind the hole.

  According to said structure, the permanent magnet engage | inserted by the hole is received by the bracket, and it can position and can prevent falling.

  Furthermore, in the latching relay of the present invention, the permanent magnet is formed in a rectangular shape and is magnetized in one diagonal direction, and the other leg portion of the yoke is rotated in a diamond shape by 45 degrees. A rectangular hole is formed, and the permanent magnet is fitted into the hole.

  According to the above configuration, the rectangular permanent magnet is rotated 45 degrees and fitted into the other leg portion of the yoke, and correspondingly, the permanent magnet is magnetized in one diagonal direction. The other leg of the yoke is provided with a rectangular hole rotated 45 degrees in a diamond shape.

  Therefore, even if permanent magnets of the same size are used, the width of the connecting portion connecting the portion on the distal end side and the portion on the proximal end side of the yoke becomes wider around the hole, and the connecting portion The magnetic flux generated from the corner portion of the adjacent permanent magnet is small, and the short-circuit magnetic flux can be reduced.

  In the latching relay of the present invention, the permanent magnet is fitted into a hole drilled in the other leg of the yoke, and a recess is formed around the hole, corresponding to the permanent magnet. A convex part is formed, The said concave part and convex part are formed so that the polarity and front and back of a permanent magnet may be prescribed | regulated.

  According to the above configuration, the permanent magnet is fixed by being fitted into a hole drilled in the other leg portion of the yoke. When the permanent magnet is fixed, a recess is formed around the hole, and the permanent magnet Corresponding convex portions are formed in. Then, for example, two concave portions and convex portions are provided at asymmetric positions on the four sides of the rectangular permanent magnet, so that the concave portions and convex portions are formed so as to define the polarity of the permanent magnet.

  Therefore, the polarity (magnetization direction) of the permanent magnet can be matched by simply fitting the permanent magnet into the yoke with the concave portion and the convex portion being matched, and assembly is easy. In addition, it is possible to prevent the permanent magnet from being biased in the hole.

  As described above, the latching relay of the present invention performs contact switching by supplying a current in the direction opposite to that at the previous supply to the coil, and after switching, the latching relay maintains the contact state by the magnetic force of the permanent magnet. In the relay, in order to stably maintain the state after switching without being energized, the yoke is generally formed in a U shape or a U shape, and one leg portion is inserted through the coil bobbin. The other leg portion is formed by drilling a hole and fitting a permanent magnet, or cutting off the tip side and adding a permanent magnet instead, and replacing at least a part thereof with a permanent magnet, The amateur is generally formed in an L shape or a dogleg shape, and a bent portion is swingably supported at the tip of the other leg portion of the yoke, and one side is the both leg portions of the yoke. Between the tips of the other and the other Sides to extend beyond the permanent magnets from the tip of the other leg of said yoke.

  Therefore, a latching relay that can maintain the contact state by the magnetic force of the permanent magnet even when not energized can be roughly composed of three parts, a permanent magnet, a yoke, and an amateur, without using parts such as a spring. Stable operation can be realized with a simple magnetic circuit.

[Embodiment 1]
FIG. 1 is a longitudinal sectional view showing an overall configuration of a latching relay according to a first embodiment of the present invention. This latching relay is generally composed of a contact portion 1 and a drive portion 2, which are mounted on a common electrically insulating base 3 and then electrically insulated or metal casing. 4 is covered and sealed.

  The contact portion 1 is composed of two contact members 5 and 6. The contact member 5 on the fixed side is made of a band-shaped metal plate having rigidity, and the base end side protrudes from the base 3 to the outside to be one terminal, and is provided on the free end side of the fixed terminal 11. The fixed contact 12 is configured.

  Further, the movable contact member 6 is made of a rigid band-shaped metal plate, protrudes outward from the base 3 and has one end serving as the other terminal, and the other end side of the fixed terminal 13. The movable spring 14 is formed of a thin belt-like metal plate having a base end fixed and elastic, and a movable contact 15 provided on the free end side of the movable spring 14.

  On the other hand, the drive unit 2 includes a coil bobbin 22 around which the coil 21 is wound, a U-shape or a U-shape, and a leg 23 a inserted through the coil bobbin and a contact point. A permanent magnet 24 for maintaining the state and generally formed in an L shape or a U shape, and a bent portion 25c is swingably supported on the distal end side of the other leg portion 23b of the yoke 23 And a card 26 that is fixed to the armature 25 and presses the movable spring 14 to bring the movable contact 15 into / out of contact with the fixed contact 12.

  FIG. 2 is a cross-sectional view taken along section line II-II in FIG. 1, and FIG. 3 is a bottom view of the drive unit 2. In FIG. 2, the cut surface of FIG. 1 is indicated by II. It should be noted that in the present invention, the permanent magnet 24 is provided by replacing at least a part of the other leg portion 23b of the yoke 23, and the armature 25 corresponds to the one side. 25a faces between the tips of the leg portions 23a, 23b of the yoke 23, and the other side 25b extends beyond the permanent magnet 24 from the tip of the other leg portion 23b of the yoke 23 and hits the tip. 25d is formed. In an armature 25 in which a belt-like magnetic body is formed by bending with a press or the like, the bent portion 25c is formed in a narrow width by forming V-shaped notches from both sides, and the notches. This portion engages with a pair of engagement pieces 29a and 29b formed at the tip of the other leg portion 23b, so that the armature 25 can swing as described above.

  In the drive unit 2, the permanent magnet 24 is fitted in a hole 23 e formed in the other leg 23 b of the yoke 23. The permanent magnet 24 is polarized in the longitudinal direction of the leg portion 23b, and the armature 25 extends from the bent portion 25c supported by the tip end of the leg portion 23b to the swing piece 25d. A magnetic circuit can be formed with portions on both sides of the permanent magnet 24 in the portion 23b.

  In FIG. 1, a terminal for supplying an exciting current to the coil 21 of the drive unit 2 is omitted. The fixed terminals 11 and 13 together with the terminals are insert-molded on the base 3.

  FIG. 4 is a diagram for explaining the operation of the latching relay configured as described above, and shows the drive unit 2 excluding the card 26. As described above, since the permanent magnet 24 is polarized in the longitudinal direction of the leg portion 23b, for example, one side 25a of the armature 25 is one leg portion 23a of the yoke 23 as shown in FIG. In the state of being separated from the tip 23d of the armature 25, the other side 23b of the armature 25 is attracted to the other leg 23b of the yoke 23 by the magnetic flux generated by the permanent magnet 24 indicated by the solid line arrow in the figure, The contact piece 25d is in contact with the leg portion 23b, and the other leg portion 23b of the yoke 23 including the permanent magnet 24-the bent portion 25c of the armature 25-the other side 25b of the armature 25-the contact of the armature 25. The piece 25d flows along the path of the other leg portion 23b of the yoke 23, and the state of the armature 23 is maintained even when power is not supplied.

  When the coil 21 is excited by supplying a current in one direction, the generated magnetic flux is one leg portion 23a of the yoke 23-the bent portion of the yoke 23, as indicated by a broken arrow in the figure. 23c—the other leg 23b of the yoke 23—the armature 25 hit piece 25d—the other side 25b of the armature 25—the bent portion 25c of the armature 25—the one side 25a of the armature 25—the one leg of the yoke 23 23a, the other leg 23b of the yoke 23-the bent portion 25c of the armature 25-the other side 25b of the armature 25-the contact piece 25d of the armature 25-the path of the other leg 23b of the yoke 23 The armature 25 has one side 25a adsorbed to the tip 23d of one leg 23a of the yoke 23, and the contact piece 25d is the other leg 2 of the yoke 23. Away from the b, the state shown in FIG. 4 (b). As a result, the magnetic flux generated by the permanent magnet 23 is one of the other leg portion 23b of the yoke 23 including the permanent magnet 24, the bent portion 25c of the armature 25, and the armature 25, as indicated by the solid arrow in the drawing. Side 25a-one leg portion 23a of the yoke 23-bent portion 23c of the yoke 23-the other leg portion 23b of the yoke 23, and the state of the armature 25 is maintained thereafter even if no current is applied. .

  On the other hand, when a current in the reverse direction is supplied to the coil 21 to be excited, the generated magnetic flux is generated by one leg 23a of the yoke 23-the armature 25, as indicated by a broken arrow in the figure. The path of one side 25a-the bent part 25c of the armature 25-the other side 25b of the armature 25-the other leg part 23b of the yoke 23-the bent part 23c of the yoke 23-the one leg part 23a of the yoke 23. Even if the magnetic flux generated by the permanent magnet 24 flows in the opposite direction between the one leg portion 23a of the yoke 23 and the one side 25a of the armature 25, the magnetic flux generated by the coil 21 rather than that. Therefore, the contact piece 25d of the other side 25b of the armature 25 is attracted to the other leg portion 23b of the yoke 23, and the one side 25a of the armature 25 is the tip 23d of the one leg portion 23a of the yoke 23. The above figure The state shown in (a). As a result, the magnetic flux generated by the permanent magnet is, as indicated by the solid arrow in the figure, the other leg portion 23b of the yoke 23 including the permanent magnet 24, the bent portion 25c of the armature 25, and the other armature 25. The state of the armature 25 is maintained thereafter even if it flows through the path of the side 25b-the contact piece 25d of the armature 25d-the other leg 23b of the yoke 23 and is not energized.

  In this way, the latching relay capable of maintaining the contact state by the magnetic force of the permanent magnet 24 even when not energized can be roughly constituted by the three parts of the permanent magnet 24, the yoke 23 and the amateur 25, and the spring A stable operation can be realized with a simple magnetic circuit without using any components. Further, since the magnetic flux generated by the coil does not pass through the permanent magnet 24 having a large magnetic resistance, the path through the armature 25 or through the horizontal column portions 23x and 23y of the permanent magnet 24 can be configured. Is small and highly efficient.

[Embodiment 2]
FIG. 5 is a cross-sectional view of the driving part 32 of the latching relay according to the second embodiment of the present invention. FIG. 5 corresponds to FIG. 2 described above, and an overall cross-sectional view of the front view including the contact portion appears in the same manner as FIG. Moreover, it is similar to the configuration of FIG. 1 and FIG. It should be noted that in the drive unit 32, a yoke 33 is used instead of the yoke 23. The yoke 33 has a different manner of embedding the permanent magnet 34. The other leg 33b of the yoke 33 has a notch 33d cut out from one side, and the permanent magnet 34 It fits into the notch 33d.

  By configuring in this way, the other leg 33b of the yoke 33 is cantilevered so that its tip is held, and a permanent magnet is provided between the tip 33e and the base 33f. 34 will be fitted. Therefore, the distal-side portion 33e and the proximal-side portion 33f are connected by the thin beam portion 33g, and a short circuit of the magnetic flux of the permanent magnet 34 fitted therebetween can be suppressed. Further, in the notch 33d, when the same size magnet is used in the notch 33d, the width of the beam portion 33g can be doubled, and press working is easy.

[Embodiment 3]
FIG. 6 is a cross-sectional view of the driving part 42 of the latching relay according to the third embodiment of the present invention. FIG. 6 corresponds to FIG. 2 and FIG. 5 described above, and an overall cross-sectional view of the front view including the contact portion appears in the same manner as FIG. Moreover, it is similar to the configuration of FIG. 1 and FIG. It should be noted that in the drive unit 42, a yoke 43 is used instead of the yoke 23. In this yoke 43, the other leg portion 43b is divided into a distal end portion 43e and a proximal end portion 43f, and a permanent magnet 44 is sandwiched therebetween.

  By constituting in this way, the short circuit of the magnetic flux of the permanent magnet 44 by the yoke 43 can be eliminated. Further, compared to forming the hole 23e and the notch 33d, the yoke 43 can be easily processed, and the processing cost can be reduced.

[Embodiment 4]
7 and 8 are cross-sectional views of the driving unit 52 of the latching relay according to the fourth embodiment of the present invention. 7 is a front view corresponding to FIG. 1 described above, FIG. 8 is a side view corresponding to FIG. 2, FIG. 5 and FIG. 6, and the entire configuration including the contact portion is the same as FIG. Therefore, illustration is abbreviate | omitted. 7, the cut surface of FIG. 8 is indicated by VIII-VIII, and in FIG. 8, the cut surface of FIG. 7 is indicated by VII-VII. Moreover, it is similar to the configuration of FIG. 1 and FIG. It should be noted that in the drive unit 52, a yoke 53 is used instead of the yoke 23. Even in the yoke 53, the way of embedding the permanent magnet 54 is different, and a recess 53d is formed in the thickness direction in the other leg 53b of the yoke 53, and the permanent magnet 54 is formed in the recess 53d. It is inserted. If the cross-sectional area of the recess 53d is small, many magnetic fluxes are not short-circuited.

  By comprising in this way, compared with the case where the said hole 23e is formed by punching, the process of the yoke 53 is simple and can reduce a process cost.

[Embodiment 5]
9 and 10 are cross-sectional views of the driving portion 62 of the latching relay according to the fifth embodiment of the present invention. 9 is a front view corresponding to FIG. 1 and FIG. 7 described above, and FIG. 10 is a side view corresponding to FIG. 2, FIG. 5, FIG. 6 and FIG. Since it is the same as FIG. 1 described above, the illustration is omitted. 9, the cut surface of FIG. 10 is indicated by XX, and in FIG. 10, the cut surface of FIG. 9 is indicated by IX-IX. Moreover, it is similar to the configuration of FIG. 1 and FIG. It should be noted that in the drive unit 62, a yoke 63 is used instead of the yoke 23. And this yoke 63 is formed in J shape, and the other leg part 63b side is short. A permanent magnet 64 is attached to the leg portion 63b, and the armature 65 is attached to the tip 64a of the permanent magnet 64 by the hinge or the like.

  By configuring in this way, it is not necessary to process portions for embedding the permanent magnets 24 and 34 such as the hole 23e and the notch 33d, so that the processing of the yoke 63 is simple and the processing cost is reduced. Can do.

[Embodiment 6]
FIGS. 11 and 12 are cross-sectional views of the driving portions 72 and 82 of the latching relay according to the sixth embodiment of the present invention. 11 and 12 correspond to FIG. 2 described above, and the entire cross-sectional view of the front view including the contact portion appears in the same manner as FIG. Also, parts corresponding to those in FIGS. 1 and 2 are denoted by the same reference numerals. It should be noted that these drive units 72 and 82 use yokes 73 and 83 in place of the yoke 23. In these yokes 73 and 83, the permanent magnet 24 is similar to the yoke 23 in that the permanent magnet 24 is fitted into the holes 73d and 83d formed in the other leg portions 73b and 83b. , 83d, connecting portions 73i, 73j; 83i, 83j for connecting the distal end portions 73e, 83e and the proximal end portions 73f, 83f of the yokes 73, 83 are formed thin.

  That is, in the yoke 73 of FIG. 11, the recesses 73k and 73l are respectively formed in the connecting portions 73i and 73j, and in the yoke 83 of FIG. 12, the V grooves 83k and 83l are respectively formed in the connecting portions 83i and 83j. Yes.

  With this configuration, the distal end portions 73e and 83e and the proximal end portions 73f and 83f are connected by the thin connecting portions 73i and 73j; 83i and 83j, and the permanent magnet 24 fitted between them is connected. Short-circuiting of magnetic flux can be suppressed. Further, the V grooves 83k and 83l are easier to process than the recesses 73k and 73l.

[Embodiment 7]
FIG. 13 is a cross-sectional view of the latching relay drive unit 92 according to the seventh embodiment of the present invention. FIG. 13 corresponds to FIG. 2 and the like described above, and an overall cross-sectional view of the front view including the contact portion appears in substantially the same manner as FIG. Also, parts corresponding to those in FIGS. 1 and 2 are denoted by the same reference numerals. It should be noted that in the driving portion 92, the hole 93d is formed in a rectangular shape rotated 45 degrees in a rhombus shape in the other leg portion 93b of the yoke 93, and the permanent magnet 94 is correspondingly formed. It is formed in a rectangular shape and is magnetized in one diagonal direction.

  Therefore, even if the permanent magnet 94 having the same size as the permanent magnet 24 is used, the width of the connecting portions 93i and 93j that connect the distal end portion 93e and the proximal end portion 93f of the yoke 93 is increased. In addition to being easy to press, the magnetic flux generated from the corner portion of the permanent magnet 94 adjacent to the connecting portions 93i, 93 is small, and the short-circuit magnetic flux can be reduced.

[Embodiment 8]
FIG. 14 is a sectional view of the driving unit 102 of the latching relay according to the eighth embodiment of the present invention. FIG. 14 is a front view corresponding to FIG. 1 and the like, and the overall configuration including the contact portion is the same as that of FIG. It should be noted that in this drive unit 102, the hole 103d formed in the leg 103b of the yoke 103 is formed in a tapered shape. Correspondingly, the permanent magnet 104 is formed in a quadrangular frustum shape.

  With this configuration, when the permanent magnet 104 is fitted into the tapered hole 103d, the permanent magnet 104 is fitted without a gap, so that the air gap can be reduced, the magnetic resistance can be reduced, and the permanent magnet 104 can be positioned. Can also be used and is easy to assemble.

[Embodiment 9]
FIG. 15 is a sectional view of the driving unit 112 of the latching relay according to the ninth embodiment of the present invention. FIG. 15 is a front view corresponding to FIG. 1 and the like, and the overall configuration including the contact portion is the same as that of FIG. It should be noted that in this drive unit 112,
Brackets 113e and 113f for receiving the fitted permanent magnet 24 are formed behind the hole 113d formed in the leg 113b of the yoke 113.

  With this configuration, the permanent magnet 24 fitted in the hole 113d can be positioned and can be prevented from coming off.

[Embodiment 10]
FIG. 16 is a cross-sectional view of the latching relay drive unit 122 according to the tenth embodiment of the present invention. FIG. 16 corresponds to FIG. 2 described above, and an overall cross-sectional view of the front view including the contact portion appears substantially the same as FIG. It should be noted that in the driving portion 122, the permanent magnet 124 is fitted into a hole 123d formed in the other leg portion 123b of the yoke 123, and the hole 123d is surrounded by the vertical direction in FIG. The concave portions 123m and 123n are formed, and the corresponding permanent portions 124m and 124n are formed on the permanent magnet 124. The concave portion 123m and the convex portion 124m corresponding thereto, and the concave portion 123n and the convex portion 124n corresponding thereto are different in shape (the concave portion 123m and the convex portion 124m are large in FIG. 16), and the polarity of the permanent magnet is changed. It is formed to prescribe.

  Therefore, the polarity (magnetization direction) of the permanent magnet 124 can be matched by simply fitting the permanent magnet 124 into the yoke 123 with the concave portions 123m, 123n and the convex portions 124m, 124n being aligned with each other. It is. Further, it is possible to prevent the permanent magnet 124 from being biased to one side in the left-right direction in FIG.

It is a longitudinal section showing the whole latching relay composition concerning a 1st embodiment of the present invention. It is sectional drawing seen from the cut surface line II-II of FIG. It is a bottom view of the drive part of the latching relay shown in FIG. It is a figure for demonstrating the operation | movement of the latching relay of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 3rd Embodiment of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 4th Embodiment of this invention. It is sectional drawing seen from the cut surface line VIII-VIII of FIG. It is sectional drawing of the drive part of the latching relay which concerns on the 5th Embodiment of this invention. It is sectional drawing seen from the cut surface line XX of FIG. It is sectional drawing of the drive part of the latching relay which concerns on the 6th Embodiment of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 6th Embodiment of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 7th Embodiment of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 8th Embodiment of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 9th Embodiment of this invention. It is sectional drawing of the drive part of the latching relay which concerns on the 10th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Contact part 2,32,42,52,62,72,82,92,102,112,122 Drive part 3 Base 4 Casing 5 and 6 Contact member 11, 13 Fixed terminal 12 Fixed contact 14 Movable spring 15 Movable contact 21 coil 22 coil bobbin 23, 33, 43, 53, 63, 73, 83, 93, 103, 113, 123 yoke 23a one leg 23b, 33b, 43b, 53b, 63b, 73b, 83b, 93b, 103b, 113b, 123b Other leg portion 23c Bending portion 23e Hole 24, 34, 44, 54, 64, 94, 104, 124 Permanent magnet 25, 65 Amateur 25a One side 25b The other side 25c Bending portion 25d One piece 26 Card 29a , 29b Engagement piece 33d Notch 53d Recess 73i, 73j; 83i, 83j; 93i, 93j Connecting portion 7 k, 73l recess 83k, 83L V grooves 73d, 83d, 93d, 103d, 113d, 123d holes 113e, 113f bracket 123m, 123n recesses 124m, 124n protrusion

Claims (8)

In the latching relay that switches the contact by supplying the current in the opposite direction to the previous supply to the coil, and maintains the contact state by the magnetic force of the permanent magnet after switching,
In general, the yoke is formed in a U-shape or a U-shape, and one leg is inserted through the coil bobbin;
Replacing at least a part of the other leg of the yoke, and the permanent magnet polarized in the longitudinal direction of the leg;
In general, it is formed in an L shape or a K shape, and a bent portion is swingably supported at the tip of the other leg of the yoke, and one side is between the tips of the two legs of the yoke. And the other side extends beyond the permanent magnet from the tip of the other leg of the yoke,
A latching relay, comprising: a card fixed to the amateur and pressing a movable contact to contact / separate the fixed contact.   The latching relay, wherein the permanent magnet is fitted into a notch formed by cutting from one side of the other leg of the yoke.   The latching relay according to claim 1, wherein the permanent magnet is fitted in a recess formed in the other leg of the yoke.   The permanent magnet is fitted into a hole drilled in the other leg portion of the yoke, and a connecting portion for connecting the portion on the distal end side and the portion on the proximal end side of the yoke around the hole is thin-walled. The latching relay according to claim 1, wherein the latching relay is formed as follows.   The latching relay according to claim 4, wherein the hole is formed in a tapered shape.   The latching relay according to claim 4, further comprising a bracket for receiving the fitted permanent magnet behind the hole.   The permanent magnet is formed in a rectangular shape and is magnetized in one diagonal direction, and the other leg portion of the yoke is provided with a rectangular hole rotated 45 degrees in a diamond shape, The latching relay according to claim 1, wherein the permanent magnet is fitted into the hole.   The permanent magnet is fitted into a hole drilled in the other leg of the yoke, a recess is formed around the hole, and a corresponding protrusion is formed in the permanent magnet, and the recess and The latching relay according to claim 1, wherein the convex portion is formed so as to define the polarity and front and back of the permanent magnet.

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