JP6631946B2 - Electromagnetic relay - Google Patents

Description

  The present invention relates to an electromagnetic relay.

  Conventionally, a contact block having a fixed contact portion having a fixed contact formed thereon and a movable contact portion having a movable contact formed to contact and separate from the fixed contact, and a drive for moving the movable contact so as to be able to contact and separate from the fixed contact An electromagnetic relay including a block and a block is known (for example, see Patent Document 1).

  In this Patent Document 1, the drive block includes an iron core having a body extending horizontally and a pair of legs extending downward from both ends of the body, a spool to which the iron core is attached, and an iron core. And a coil wound around a spool having the core attached thereto.

  Further, the drive block includes an armature block that swings by switching between excitation and non-excitation of the coil block.

  The armature block extends in the horizontal direction, and both ends are opposed to the legs of the iron core. By switching between excitation and non-excitation of the coil block, one end of the armature is the axis and the other end is the legs of the iron core. An armature that swings so as to approach and separate from the part is provided. The armature includes an arm portion main body extending in a horizontal direction, a support portion formed at one end in the horizontal direction of the arm portion main body and serving as an axis when swinging, and a magnetic pole portion formed at the other end in the horizontal direction. ing.

  Further, the armature block has an operation protrusion that comes into contact with the movable contact portion, and includes a card that moves with the swing of the armature.

  As described above, in Patent Document 1, the operation protrusion formed on the card is moved by switching the excitation and non-excitation of the coil block to swing the armature, and the movable contact is moved to the fixed contact with the movement of the operation protrusion. It is moved so that it comes in contact with and separates from.

JP 2013-218885 A

  However, in the above-described conventional technique, an extension portion that extends upward is formed in each of the support portion and the magnetic pole portion of the armature. Therefore, the center of gravity of the armature support part and the center of gravity of the magnetic pole part are located above the center of gravity of the arm body.

  The operation protrusion of the card presses the central portion in the vertical direction on the support portion side with respect to the horizontal center of the arm portion main body.

  As described above, in the related art, the operation protrusion of the card presses the support portion side of the arm main body with respect to the horizontal center. Therefore, when the pressing force of the operation projection is applied to the armature, the force for separating the support portion side from the iron core is larger than the force for separating the magnetic pole portion side from the iron core. As a result, the lower part of the armature may rise. If the lower part of the armature rises, there is a possibility that the armature cannot be smoothly swung.

  As described above, it is difficult to improve the stability of the operation of the electromagnetic relay in the above-described conventional technology.

  Therefore, an object of the present invention is to provide an electromagnetic relay capable of further improving the operation stability.

  An electromagnetic relay according to the present invention includes a contact block including: a fixed contact portion having a fixed contact formed thereon; and a movable contact portion having a movable contact that is separated from and separated from the fixed contact. A drive block that moves so as to be able to move toward and away from the main body, wherein the drive block has a trunk extending in one direction, and the trunk extending in a horizontal direction. An iron core having a leg portion extending downward from both ends in the extending direction, a coil frame to which the iron core is attached, and winding with the coil frame interposed in the body of the iron core. A coil to be turned, an armature arranged to extend from one leg to the other leg of the iron core, and swinging around one end, and with the swinging of the armature And a moving body that moves, wherein the armature is one leg of the iron core. A supporting portion that is the axis facing the shaft, a magnetic pole portion that faces the other leg portion of the iron core, and the supporting portion and the magnetic pole portion are connected to each other, and the magnetic pole portion is formed around the supporting portion as an axis. And an arm for swinging the arm so as to approach and separate from the other leg of the iron core, wherein the movable body is provided on the arm, and the movable body is pressed against the movable contact. The pressing protrusion is formed, and the pressing protrusion has a horizontal center of the armature in a side view in a state where an extending direction of the arm portion is a horizontal direction and a width direction of the arm portion is a vertical direction. And is formed on the magnetic pole part side.

  According to the present disclosure, it is possible to obtain an electromagnetic relay that can further improve operation stability.

It is a figure which shows the electromagnetic relay concerning 1st Embodiment of this invention, Comprising: (a) is the perspective view seen from one direction, (b) is the perspective view seen from the other direction. FIG. 2 is an exploded view showing the electromagnetic relay according to the first embodiment of the present invention, and is a perspective view seen from one direction. FIG. 2 is an exploded view showing the electromagnetic relay according to the first embodiment of the present invention, and is a perspective view seen from another direction. It is a figure showing the state where the cover of the electromagnetic relay concerning a 1st embodiment of the present invention was removed, (a) is a perspective view seen from one direction, and (b) is a perspective view seen from the other direction. 2A and 2B are diagrams illustrating a drive block according to the first embodiment of the present invention, wherein FIG. 2A is a perspective view as viewed from one direction, and FIG. 2B is a perspective view as viewed from another direction. FIG. 2 is an exploded view showing the drive block according to the first embodiment of the present invention into a coil block and an armature block, and is a perspective view seen from one direction. FIG. 2 is an exploded view showing the drive block according to the first embodiment of the present invention into a coil block and an armature block, and is a perspective view seen from another direction. It is a figure which disassembles and shows the coil block concerning 1st Embodiment of this invention, and was seen from one direction. FIG. 2 is an exploded view showing the coil block according to the first embodiment of the present invention, and is a perspective view seen from another direction. It is a figure which shows the coil frame concerning 1st Embodiment of this invention, Comprising: (a) is the perspective view seen from one direction, (b) is the perspective view seen from the other direction. It is a figure showing the coil frame concerning a 1st embodiment of the present invention, and is the perspective view seen from the side where an iron core is inserted. It is a figure showing the coil frame concerning a 1st embodiment of the present invention, (a) is a side view seen from the side where an iron core is inserted, and (b) was seen from the side where a coil binding part projects. It is a side view. It is a perspective view showing the state where the iron core was inserted in the coil frame concerning a 1st embodiment of the present invention. It is a figure showing the coil frame block concerning a 1st embodiment of the present invention, and is a perspective view seen from one direction. It is sectional drawing which shows the coil block concerning 1st Embodiment of this invention, Comprising: It is sectional drawing which shows the state which wound the coil around the coil frame block. It is a figure which disassembles and shows the armature block concerning 1st Embodiment of this invention, (a) is the perspective view seen from one direction, (b) is the perspective view seen from the other direction. It is a figure which shows the armature block concerning 1st Embodiment of this invention, (a) is the side view seen from the pressing protrusion side, (b) is the side view seen from the recessed part side. It is sectional drawing which shows the armature block concerning 1st Embodiment of this invention, and is sectional drawing cut | disconnected in the position corresponding to a press protrusion and a recessed part. It is a figure which shows the positional relationship between the iron core and armature block concerning 1st Embodiment of this invention, (a) is a perspective view seen from one direction, (b) is a perspective view seen from another direction. is there. It is a figure showing the physical relationship between the iron core concerning a 1st embodiment of the present invention, and an armature block, and is a side view seen from the armature block side. FIG. 4 is a diagram illustrating a positional relationship between the iron core and the armature block according to the first embodiment of the present invention, as viewed from the tip end side of the iron core. FIG. 3 is a diagram illustrating a positional relationship between the iron core and the armature block according to the first embodiment of the present invention, as viewed from a fulcrum side of the armature block. It is a figure which shows the contact block concerning 1st Embodiment of this invention, Comprising: (a) is the perspective view seen from one direction, (b) is the perspective view seen from the other direction. FIG. 3A is a diagram illustrating a movable contact portion according to the first embodiment of the present invention, in which FIG. 4A illustrates a movable contact portion in a free state before assembly, and FIG. It is a figure showing a movable contact part in a state where it is not made. FIG. 3 is a diagram illustrating a positional relationship between the movable contact portion and the armature block according to the first embodiment of the present invention, and is a perspective view seen from the movable contact portion side. FIG. 3 is a diagram illustrating a positional relationship between a movable contact portion and a pressing protrusion according to the first embodiment of the present invention. It is the perspective view which looked at the base concerning a 1st embodiment of the present invention from one direction. It is a perspective view showing the contact block accommodation space of the base concerning a 1st embodiment of the present invention. FIG. 2 is a perspective view showing a drive block housing space of the base according to the first embodiment of the present invention. It is a figure which shows the positional relationship between the separation wall of a base and coil which concerns on 1st Embodiment of this invention, (a) is a perspective view, (b) is a side view seen from the drive block accommodation space, (c). Is a plan view. FIG. 4 is a diagram illustrating a method of attaching a drive block to a base according to the first embodiment of the present invention. It is a figure explaining the method of attaching a contact block to a base concerning a 1st embodiment of the present invention, and is a perspective view showing the state where a movable contact part was attached to a contact block accommodation space. It is a figure explaining the method of attaching a contact block to a base concerning a 1st embodiment of the present invention, and is a perspective view showing the state where a fixed contact part was attached to a contact block accommodation space. FIG. 2 is a cross-sectional view illustrating a state where contacts of the electromagnetic relay according to the first embodiment of the present invention are open. It is a sectional view showing the state where the contact of the electromagnetic relay concerning a 1st embodiment of the present invention was closed. FIG. 3 is a sectional view illustrating an insulation distance from a coil to a movable contact portion in the electromagnetic relay according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating an insulation distance from an armature to a movable contact portion in the electromagnetic relay according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating a relationship between an upper protrusion of the armature block and a partition of the base in the electromagnetic relay according to the first embodiment of the present invention. It is a perspective view showing the state where the cover of the electromagnetic relay concerning a 2nd embodiment of the present invention was removed. It is a perspective view showing the state where a coil frame and a leaf spring concerning a 2nd embodiment of the present invention were disassembled. It is sectional drawing of the electromagnetic relay concerning 2nd Embodiment of this invention, Comprising: It is sectional drawing which shows the state in which the support part of the armature was supported by the leaf spring and the iron core. It is a perspective view showing the state where the cover of the electromagnetic relay concerning a 3rd embodiment of the present invention was removed. It is a perspective view showing a base concerning a 3rd embodiment of the present invention. It is a perspective view showing the coil frame concerning a 3rd embodiment of the present invention. It is sectional drawing of the electromagnetic relay concerning 3rd Embodiment of this invention, Comprising: It is sectional drawing which shows the state in which the support part of the armature was supported by the base and the iron core. It is a perspective view showing a coil frame block concerning a 4th embodiment of the present invention. It is a perspective view showing a coil block concerning a 4th embodiment of the present invention. It is a sectional view showing a coil block concerning a 4th embodiment of the present invention, and is a sectional view showing the state where a coil was wound around a coil frame block.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Hereinafter, the longitudinal direction of the electromagnetic relay will be described as the front-rear direction X, the lateral direction of the electromagnetic relay will be described as the width direction Y, and the thickness direction of the electromagnetic relay will be described as the vertical direction Z.

  Note that a plurality of embodiments described below include similar components. Therefore, in the following, the same reference numerals are given to those similar components, and redundant description will be omitted.

(1st Embodiment)
The electromagnetic relay 1 according to the present embodiment includes a substantially rectangular parallelepiped housing 20, as shown in FIGS.

  The housing 20 has a resin base 200 to which the contact device 10 is mounted, and a substantially box shape with one end opened, and a resin cover 300 arranged to cover the base 200 to which the contact device 10 is mounted. And

  The contact device 10 is housed inside the housing 20 by covering the base 200 with the cover 300.

  The contact device 10 includes a contact block 60 having a fixed contact 660 and a movable contact 610 that contacts and separates from the fixed contact 660; a drive block 40 that moves the movable contact 610 to and away from the fixed contact 660; It is composed of

  That is, a contact block 60 having a fixed contact 660 and a movable contact 610 that contacts and separates from the fixed contact 660 inside the housing 20, and a drive block that moves the movable contact 610 so as to be able to contact and separate from the fixed contact 660. 40 are accommodated.

  In a state where the base 200 on which the contact device 10 is assembled is covered with the cover 300, the contact device 10 is fixed to the base 200 by applying an adhesive 100 to the back surface of the base 200, and the base 200 and the cover 200 are covered. 300 is fixed (see FIG. 4).

  Further, in the present embodiment, a hole 301 for performing heat sealing and a stepped portion 302 for avoiding a problem due to a gate at the time of molding the cover 300 are provided in the top wall portion of the cover 300.

  As shown in FIG. 2, the drive block 40 includes a coil 72 and an iron core 800 formed of a magnetic material and around which the coil 72 is wound. When the coil 72 is energized, the iron core 800 is used as an electromagnet. It has a coil block 70 to function and an armature block 50 that swings by the action of the iron core 800 as an electromagnet.

  In the present embodiment, the partition wall 220 is provided on the base portion 210 of the base 200 so as to extend substantially in the X direction and to rise upward in the Z direction. By providing the partition wall 220, the contact block 60 and the drive block 40 are separated and assembled to the base 200 in an insulated state.

  That is, the inside of the housing 20 is divided into two in the Y direction by a partition wall 220 extending substantially in the X direction, and the respective spaces are a contact block housing space 230 and a drive block housing space 240 (FIG. 28). And FIG. 29).

  Further, a separation wall 222 extending substantially in the X direction and protruding in the Y direction is formed on the drive block housing space 240 side of the partition wall 220. By providing the separation wall 222, the coil 72 of the coil block 70 and the armature block 50 are separated from each other and can be assembled to the base 200 in an insulated state.

  That is, by providing the separation wall 222, the drive block housing space 240 is divided into the coil housing space 250 and the armature block housing space 260.

  As described above, in the present embodiment, the interior of the housing 20 is mainly partitioned into three spaces (the contact block housing space 230, the coil housing space 250, and the armature block housing space 260). Then, the contact block 60, the coil block 70, and the armature block 50 are accommodated in the respective spaces.

  In the present embodiment, the coil block 70 is formed by winding the coil 71 around the coil frame block 71 (see FIGS. 6, 7, and 14).

  The coil frame block 71 includes a body 810 extending in the X direction (one direction) and both ends of the body 810 in the extending direction of the body 810 in a state in which the body extends in the horizontal direction (X direction). And an iron core 800 having legs 820 and 830 extending downward from the iron core 800.

  The iron core 800 is formed of a substantially C-shaped thin plate, and can be formed, for example, by punching a plate-shaped magnetic material.

  The coil frame block 71 includes a coil frame 700 to which the iron core 800 is attached. Furthermore, the coil frame block 71 is electrically connected to the coil 72, one end of which is electrically connected to the coil 72, and the other end of which projects downward in the Z direction of the housing 20 (in this embodiment, (Two) coil terminals 900. The coil terminal 900 is electrically connected to an external power supply or the like, and power is supplied to the coil 72 through the coil terminal 900.

  As shown in FIGS. 10 to 12, the coil frame 700 extends in the X direction, and includes a body 720 around which the coil 72 is wound, and flanges 710 provided at both ends of the body 720 in the X direction. , Is provided.

  An opening 731 is formed on one side of the coil frame 700 in the Y direction (the partition 220 when the coil block 70 is mounted on the base 200), and a groove 730 into which the iron core 800 is inserted is formed.

  The groove portion 730 extends in the X direction and the Z direction, is provided with a substantially C-shaped base wall portion 740 when viewed from the Y direction, and is provided continuously on an upper portion of the base wall portion 740, and is provided on one side in the Y direction. An upper wall 750 protruding from the base wall 740, a lower wall 760 protruding to one side in the Y direction, and an extending wall 770 extended to both sides in the X direction of the upper wall 750. It is defined.

  A notch 711 is formed at a portion of the flange 710 corresponding to the groove 730 so as to communicate with the groove 730 so that the insertion of the iron core 800 is not hindered by the flange 710.

  Further, in the present embodiment, the extension walls 770 on both sides in the X direction each include a horizontal wall 711 extending substantially horizontally. Further, the extension wall 770 on one side in the X direction (on the support portion 512 side of the armature 510 described later) includes a hanging wall 772 that is continuously provided so as to protrude downward from the horizontal wall 771.

  By inserting the upper side of the body 810 of the iron core 800 and the legs 820, 830 (the side of the body 810) into the groove 730, the iron core 800 is assembled to the coil frame 700 (see FIG. 13).

  In the present embodiment, press-fit ribs 751 and 751 are provided at positions corresponding to the flanges 710 and 710 on the groove 730 side of the upper wall (wall defining the groove 730), respectively, and the iron core 800 is provided in the groove 730. Press-fit. Further, in the present embodiment, the press-fit ribs 751 and 751 are provided at locations where the flanges 710 and 710 are formed so as to extend along the inner periphery of the flanges 710 and 710. Therefore, when the iron core 800 is press-fitted into the groove portion 730, a press force is generated from the inner peripheral surfaces of the flange portions 710, 710 toward the outer peripheral direction of the flange portions 710, 710. As described above, the deformation of the coil frame 710 is suppressed by generating the press input in the outer peripheral direction of the flange portion.

  Further, the inner surface of the hanging wall (the wall defining the groove 730) 772 on the groove 730 side moves in the direction (opening 731 side) in which the iron core 800 press-fitted (inserted) into the groove 730 comes off. The protrusion 780 for suppressing is formed.

  In the present embodiment, the amount of protrusion increases toward the depth side (base wall 740 side) of the groove portion 730, and the surface on the depth side (base wall 740 side) is a substantially right angle that is a flat surface substantially parallel to the base wall 740. A triangular projection 780 is formed on the inner surface of the hanging wall 772 facing the groove 730.

  By doing so, when the iron core 800 is press-fitted (inserted) into the groove 730, the iron core 800 is guided by the inclined surface of the projection 780, so that the iron core 800 is easily press-fitted (inserted) into the groove 730. be able to. On the other hand, when the iron core 800 is pressed (inserted) into the groove 730, the side surface (the surface on the side of the opening 731) of the iron core 800 is pressed by the surface on the back side (the base wall 740 side) of the protrusion 780. It is possible to more reliably suppress the iron core 800 press-fitted (inserted) into the 730 from moving in the direction in which the iron core 800 is separated (toward the opening 731).

  Further, in the present embodiment, the hanging wall (the wall defining the groove 730) 772 and the base wall (the groove 730) are defined in a state viewed from the Y direction (the direction in which the iron core 800 is inserted into the groove 730). A relief portion 781 that exposes the entire protrusion 780 is formed at a portion of the wall 740 corresponding to the protrusion 780.

  By forming the escape portion 781, the height of the projection 780 can be easily adjusted when the coil frame 700 is molded with resin using a mold.

  In the present embodiment, the other side in the X direction of the coil frame 700 and the iron core 800 (the magnetic pole portion 513 side of the armature 510 described later) is a portion fixed by chucking when the coil 72 is wound. Therefore, the protrusion 780 is provided only on one side in the X direction (the magnetic pole portion 513 side of the armature 510). As described above, when fixing by chucking, the protrusion 780 is formed on the opposite surface, which is a portion that is easily lifted by the principle of leverage, so that one side in the X direction of the iron core 800 (the magnetic pole portion 513 of the armature 510). Side) can be more reliably prevented from floating.

  In addition, the iron core 800 is formed with an uneven portion 811 in order to reduce the magnetic flux density or prevent erroneous insertion, and the shape of the groove 730 is changed to a shape corresponding to the shape of the uneven portion 811. I am trying to become.

  Further, the coil terminal 900 includes a terminal binding portion 910 to which the starting end 721 and the terminal end 722 of the coil 72 are tied, a press-fitting piece 920 which is pressed into the coil frame 700 to fix the coil terminal 900 to the coil frame 700, and a housing 20. And a terminal portion 930 that is exposed outside and electrically connected to an external power supply or the like.

  In the present embodiment, the coil terminal 900 on the outer side in the X direction has an insertion hole 771 a formed in the horizontal wall 771 on one side in the X direction (the magnetic pole portion 513 side of the armature 510), and the tip protrudes outside the coil frame 700. As described above, the terminal binding portion 910 is inserted, and the press-fitting side 920 is press-fitted into the press-fitting groove 772 a formed in the hanging wall 772, thereby being fixed to the coil frame 700.

  On the other hand, the coil terminal 900 on the inner side in the X direction is inserted into an insertion hole 771a formed in the horizontal wall 771 on one side in the X direction (on the side of the magnetic pole portion 513 of the armature 510) so that its tip projects outside the coil frame 700. The terminal binding portion 910 is inserted, and the press-fitting side 920 is press-fitted into the press-fitting groove 712 formed in the flange portion 710, thereby being fixed to the coil frame 700.

  As described above, this coil frame 700 is formed by resin molding using a mold, and resin is poured into the mold from a plurality of resin gates.

  In the present embodiment, the coil frame 700 is formed using two resin gates. Therefore, two (at least two) resin gate traces 741 are formed in the coil frame 700 according to the present embodiment. As described above, by forming the coil frame 700 using two (at least two) resin gates, it is possible to reliably fill the resin into the large portions of the molding volume on both sides in the X direction. As a result, the tolerance of the molding conditions is expanded, and molding under more optimal molding conditions becomes possible. Further, since the molding flow can be stabilized, the warpage can be reduced. In addition, it is possible to reduce the variation in the warp. As a result, the coil frame 700 can be more accurately formed.

  Further, in the present embodiment, two resin gate traces 741 are formed near the flange 710 formed on the coil frame 700. That is, two resin gate marks 741 are formed near the flange portions 710 on both sides in the X direction, which are large portions of the molding volume.

  A bulge 742 is formed on the coil frame 700 on the opposite side of the resin gate mark 741. In this way, by providing the bulging portion 742 and increasing the wall thickness, the rigidity of the coil frame 700 can be ensured.

  Furthermore, in the present embodiment, a support-side protruding piece (positioning portion) 743 that protrudes downward is connected to the lower end of the hanging wall 772. At this time, a support-side protruding piece (positioning portion) 743 is continuously provided below the hanging wall 772 so as to be separated from the iron core 800 by a predetermined distance in the Y direction. Specifically, the lower end of the hanging wall 772 extends in the Y direction, and a support-side protruding piece (positioning portion) 743 is formed to extend downward from the tip of the extending portion. In this manner, by extending the lower end of the hanging wall 772 in the Y direction, a space is formed above the extended portion. In the present embodiment, the space formed above the extended portion (the upper portion of the support-side protruding piece 743) is a coil extraction space 790. In addition, the upper surface of the extended portion that defines the lower end of the coil extraction space 790 has a smooth curve that is convex downward so that the extracted coil can be easily entangled with the terminal entanglement portion 910. And the surface.

  In the present embodiment, a bulging portion 742 is formed in the coil extraction space 790. For this reason, the surface of the bulging portion 742 has a smooth curved surface without an edge so that the coil 72 can be prevented from being cut by the edge.

  Then, the coil frame block 71 is formed by attaching the coil terminals 900 to the coil frame 700 to which the iron core 800 is assembled, the coil 72 is wound around the body 810 and the body 720, and the start end 721 and the end 722 are drawn out of the coil outlet. The coil block 70 is formed by pulling the coil block 791 out of the coil terminal space 790 and tying it to the terminal tying part 910 of the coil terminal 900.

  In such a coil block 70, the body 810 of the iron core 800 has the upper surface 812 and the lower surface 813 (two surfaces separated from each other) and one side surface 814 covered with the body 720 of the coil frame 700, and the other. The coil 72 is wound in a state where the side surface 815 is not covered by the body 720 (see FIG. 15). That is, the body 810 of the iron core 800 is assembled to the substantially C-shaped body 720. As described above, the rigidity of the coil frame 700 is ensured by assembling the body 810 of the iron core 800 with the substantially C-shaped body 720.

  Further, a space 70a into which the support 512 of the armature 510 is inserted is formed between one leg 820 of the iron core 800 and the support-side protruding piece (positioning portion) 743 (FIG. 14). reference).

  In addition, the supporting portion side protruding piece (positioning portion) 743 is a plate that presses the supporting portion 512 of the armature 510 and is substantially L-shaped (see FIG. 34). An engagement end 743 a that engages with the engagement protrusion 218 of the base 200 is provided at the lower end of the support-side protruding piece (positioning part) 743.

  On the other hand, at the lower end of the other side in the X direction of the base wall 740 (the magnetic pole portion 513 side of the armature 510), a magnetic pole portion side protruding piece (restriction portion) 744 protruding downward is continuously provided.

  At this time, the magnetic pole part side protruding piece (regulating part) 744 is continuously provided below the base wall 740 so as to be separated from the iron core 800 by a predetermined distance in the Y direction. Specifically, the lower end of the base wall 740 is extended in the Y direction, and the magnetic pole side projecting piece (restriction portion) 744 is formed so as to extend downward from the tip of the extended portion.

  The magnetic pole portion side protruding piece (restriction portion) 744 restricts the magnetic pole portion 513 from swinging in a direction away from the other leg portion 830 of the iron core 800, and has a substantially flat plate shape.

  Then, a space 70b into which the magnetic pole portion 513 of the armature 510 is inserted is formed between the other leg portion 830 of the iron core 800 and the magnetic pole portion side protruding piece (restriction portion) 744 ( (See FIG. 7).

  Then, with the magnetic pole portion 513 of the armature 510 inserted into the space 70b, the mutually facing surfaces of the magnetic pole portion 513 and the leg 830 become the magnetic pole surfaces 513a and 831 respectively.

  As a resin material for forming the coil frame 700, a liquid crystal polymer (LCP) having high fluidity and excellent heat resistance can be used. If the oil frame 700 is formed using this liquid crystal polymer (LCP), the uneven shape can be formed more accurately.

  The armature block 50 is arranged so as to extend from one leg 820 to the other leg 830 of the iron core 800, and the armature 510 swings around one end as a shaft 512 a, and the armature 510 swings. And a moving body 520 that moves with the movement.

  In the present embodiment, the armature 510 has a substantially rectangular shape that is long in the X direction, and is opposed to one leg portion 820 of the iron core 800 and serves as a shaft 512a. And a magnetic pole part 513 facing the leg part 830. Further, the armature 510 connects the support portion 512 and the magnetic pole portion 513 in series, and swings the magnetic pole portion 513 so as to approach or separate from the other leg portion 830 of the iron core 800 with the support portion 512 as an axis. An arm 511 is provided.

  In the present embodiment, the armature 510 is in a side view (a state viewed from the Y direction) in a state where the extending direction of the arm portion 511 is the horizontal direction (X direction) and the width direction of the arm portion 511 is the up and down direction. , Are substantially line-symmetric with respect to a horizontal line at the center in the vertical direction.

  In the present embodiment, a line segment L described later substantially coincides with the horizontal line at the center in the vertical direction, and is substantially line-symmetric with respect to this line segment L.

  Specifically, the support portion 512 has a rectangular shape substantially line-symmetric with respect to the line segment L, and the magnetic pole portion 513 also protrudes upward and downward from the arm portion 511. It has a line-symmetric square shape. The arm portion 511 that connects the support portion 512 and the magnetic pole portion 513 also has a substantially line-symmetrical square shape with respect to the line segment L.

  Also, when the extending direction of the arm portion 511 is set to the horizontal direction (X direction) and the width direction of the arm portion 511 is set to the vertical direction, the upper surface 512b of the support portion 512 The lower surface 512c is a flat surface.

  Further, in a side view (a state viewed from the Y direction) in which the extending direction of the arm portion 511 is the horizontal direction (X direction) and the width direction of the arm portion 511 is the vertical direction, the upper surface 512b of the support portion 512 and The lower surface 512c is located closer to the center in the vertical direction than the upper surface 520a and the lower surface 520b of the moving body 520.

  As described above, in the present embodiment, the support portion 512 is not provided with the extending portion (the shaft portion supported by the coil frame 700 and the base 200) extending in the up-down direction (Z direction). In this case, the weight of the armature block 50 is reduced, and the armature block 50 is less inclined.

  Further, since the support portion 512 is not provided with an extending portion extending in the vertical direction, in this embodiment, one of the leg portion 820 of the iron core 800 and any one of the coil frame 700 and the base 200 is used. The supporting portion 512 is positioned by the positioning portion formed on one side. This makes it possible to reduce an assembly error as compared with a case where the support portion 512 is positioned by both the coil frame 700 and the base 200, and it is possible to assemble with higher accuracy.

  In the present embodiment, as described above, the support portion 512 is positioned by the one leg portion 820 of the iron core 800 and the support portion side protruding piece (positioning portion) 743 formed on the coil frame 700. ing. As described above, by forming the support-side protruding pieces (positioning portions) 743 on the coil frame 700 to which the iron core 800 is mounted, the mounting error can be further reduced.

  Further, on one of the coil frame 700 and the base 200, a restricting portion for restricting the magnetic pole portion 513 from swinging in a direction away from the other leg portion 830 of the iron core 800 is formed. By doing so, it becomes possible to assemble with higher accuracy, the accuracy of the stroke (oscillation range) of the armature block 50 can be further improved, and the stroke can be stabilized.

  In the present embodiment, the magnetic pole part side projecting piece (restriction part) 744 is formed on the coil frame 700.

  As described above, in the present embodiment, the positioning of the support portion 512 and the description of the swing range of the magnetic pole portion 513 are described by the support portion side projecting piece (positioning section) 743 and the magnetic pole section side projecting piece (positioning section) provided on the coil frame 700. (Regulator) 744. Therefore, the sandwiching dimension of the support portion 512 and the stroke of the magnetic pole portion 513 can be further stabilized.

  The moving body 520 is provided on the arm 511 of the armature 510. The moving body 520 is formed by resin molding using a mold, and the armature 510 may be pressed into a moving body 520 formed separately from the armature 510, or the armature may be pressed. The 510 and the moving body 520 may be integrally formed by insert molding.

  Note that a liquid crystal polymer (LCP) having high fluidity and excellent heat resistance can be used as a resin material for forming the moving body 520. If the moving body 520 is formed using this liquid crystal polymer (LCP), the uneven shape can be formed more accurately, and the thickness of the moving body 520 can be made relatively thin.

  Further, a pressing protrusion 521 for pressing the movable contact 610 is formed on the moving body 520.

  The pressing protrusion 521 can be formed on a line L connecting the center of gravity C1 of the support portion 512 and the center of gravity C2 of the magnetic pole portion 513.

  In addition, the pressing protrusion 21 can be formed on a line connecting the magnetic center of the support portion 512 and the magnetic center of the magnetic pole portion 513.

  In the present embodiment, the center of gravity C1 of the support portion 512 and the center of magnetic force of the support portion 512 are substantially matched, and the center of gravity C2 of the magnetic pole portion 513 is substantially matched with the center of magnetic force of the magnetic pole portion 513. . Therefore, a line segment connecting the center of magnetic force of the support portion 512 and the center of magnetic force of the magnetic pole portion 513 substantially coincides with a line segment L connecting the center of gravity C1 of the support portion 512 and the center of gravity C2 of the magnetic pole portion 513.

  Furthermore, in the present embodiment, the line segment is a side view (a state viewed from the Y direction) in a state where the extending direction of the arm section 511 is the horizontal direction (X direction) and the width direction of the arm section 511 is the up and down direction. L is set to be substantially horizontal.

  That is, in the present embodiment, the pressing projection 521, the center of gravity (center of magnetic force) C1 of the support portion 512, and the center of gravity (center of magnetic force) C2 of the magnetic pole portion 513 are set at substantially the same height. Further, the pressing projection 521, the center of gravity (center of magnetic force) C1 of the support portion 512, and the center of gravity (center of magnetic force) C2 of the magnetic pole portion 513 are located between the upper and lower ends of the armature block 50.

  By doing so, it is possible to prevent the lower side of the armature block 50 from rotating (see arrow a in FIG. 22) when pressed by the pressing protrusion 21.

  Further, in the present embodiment, the pressing protrusion 521 is configured such that the extending direction of the arm portion 511 is the horizontal direction (X direction), and the width direction of the arm portion 511 is the up and down direction (a state viewed from the Y direction). ), The armature 510 is formed closer to the magnetic pole portion 513 than the horizontal center C3 of the armature 510 is.

  Thus, when the pressing force of the pressing protrusion 521 is applied to the armature 510, the force separating the support portion 512 side from the iron core 800 is greater than the force separating the magnetic pole portion 513 side from the iron core 800. Become smaller. As a result, it is possible to prevent the lower part of the support portion 512 of the armature 510 from rising. In addition, it is not necessary to increase the force of the holding plate for holding the support portion 512 so much. For example, the support portion 512 can also be formed by a protruding piece that is simply protruded from the coil frame 700 such as a support portion side protruding piece (positioning portion) 743. Movement can be suppressed. If the pressing force at the time of pressing the support portion 512 by the pressing plate is reduced, the generation of large friction when the armature block 50 is swung is suppressed, and the operation stability can be improved. become able to.

  The contact block 60 has a fixed contact portion 650 on which a fixed contact 660 is formed, and a movable contact portion 600 on which a movable contact 610 that comes into contact with and separates from the fixed contact 660 is formed.

  The movable contact portion 600 has a movable contact 610 formed thereon, and has a leaf spring 620 having a plate thickness and a plate width. The portion of the movable contact portion 600 excluding the movable contact 610 can be formed by, for example, pressing and bending a single metal plate material.

  In the present embodiment, the leaf spring 620 is connected to the operating piece 621 to which the movable contact 610 is attached, and is continuously connected to one end of the operating piece 621 in the X direction to move the operating piece 621 in the Y direction. And

  The operating piece 621 is formed with a slit 621a extending substantially in the X direction, and has a bifurcated tip end. One movable contact 610 is fixed to each of the two branches.

  Then, the operating piece 621 moves in the Y direction by being pressed by the pressing protrusion 521, and the movable contact 610 moves and comes into contact with or separates from the fixed contact 660 with the movement of the operating piece 621.

  In the present embodiment, as shown in FIGS. 25 and 26, the pressing region R1 of the pressing protrusion 521 is set on the spring piece 622 side of the operating piece 621. That is, the pressing protrusion 521 presses a portion of the operation piece 621 where the slit 621a is not formed. Further, in the present embodiment, the vertical width (width in the plate width direction of the leaf spring 620) W1 of the pressing region R1 is equal to the plate width (vertical width) in a portion corresponding to the pressing region R1 of the leaf spring 620. It is set to be less than half of W2.

  By doing so, even if the movable contact portion 600 and the armature block 50 are tilted, the displacement of the pressing point can be minimized, and the generation of a force for lifting the lower side of the armature block 50 can be suppressed. Can be.

  A fixed piece 630 is continuously provided at one end in the X direction of the spring piece 620, and the movable contact portion 600 is fixed to the base 200 by fixing the fixed piece 630 to the base 200.

  The fixing piece 630 includes a press-fitting piece 631 that is press-fitted into the press-fitting groove 212 of the base 200, and a curved portion 632 that is provided below the press-fitting piece 631 and covers the notch 213 of the base 200.

  A movable terminal portion 640 that is exposed downward from the housing 20 is provided continuously below the curved portion 632.

  Then, by pressing the press-fitting piece 631 into the press-fitting groove 212 of the base 200, the movable-side terminal portion 640 is exposed from below the housing 20 with the curved portion 632 covering the notch 213. A mating member such as a bus bar is electrically connected to the movable terminal portion 640 exposed from below the housing 20.

  When the case 300 is fitted with the movable contact portion 600 fixed to the base 200, the curved portion 632 is located near the inner surface of the case 300. Therefore, when the adhesive 100 is applied to the bottom surface of the base 200 and sealed, the curved portion 632 prevents entry of the adhesive 100 into the interior, and can suppress occurrence of operation failure, contact failure, and the like. .

  On the other hand, the fixed contact portion 650 has a plate portion 670 on which the fixed contact 660 is formed and which has a plate thickness and a plate width. The portion of the fixed contact portion 650 other than the fixed contact 660 can be formed, for example, by pressing a single metal plate and bending it.

  In the present embodiment, the plate portion 670 includes a wide portion 671 extending in the up-down direction, and a protrusion 672 extended to the other side in the X direction (the tip side of the fixed contact portion 650).

  A fixed piece 680 is connected to one end of the plate 670 in the X direction. The fixed contact 650 is fixed to the base 200 by fixing the fixed piece 680 to the base 200.

  The fixing piece 680 extends upward and is press-fitted into the press-fitting groove 223 of the base 200, a downwardly extending extending piece 682, and protrudes in the Y direction from a lower portion of the extending piece 682. , A press-fitting piece 683 press-fitted into the press-fitting groove 214 of the base 200, and a curved portion 684 connected to the press-fitting piece 683 and covering the notch 215 of the base 200.

  In addition, a fixed terminal portion 690 that is exposed downward from the housing 20 is provided continuously below the curved portion 684.

  The press-fitting piece 681 is press-fitted into the press-fitting groove 223 of the base 200, and the press-fitting piece 683 is press-fitted into the press-fitting groove 214 of the base 200. 690 will be exposed from below the housing 20. A mating member such as a bus bar is electrically connected to the fixed terminal portion 690 exposed from below the housing 20.

  When the case 300 is fitted with the fixed contact portion 650 fixed to the base 200, the curved portion 684 is located near the inner surface of the case 300. For this reason, when the adhesive 100 is applied to the bottom surface of the base 200 and sealed, the curved portion 684 prevents the adhesive 100 from entering the inside, thereby suppressing the occurrence of operation failure, contact failure, and the like. .

  The base 200 includes a base portion 210. As shown in FIGS. 27 and 28, the base portion 210 has a press-fitting groove 212 into which the press-fitting piece 631 of the movable contact portion 600 is press-fitted, and a base of the movable contact portion 600. A notch 213 covered by the curved portion 632 is formed. The notch 213 is provided to expose the movable terminal 640 below the base 210.

  The base 210 has a press-fit groove 214 into which the press-fitting piece 683 of the fixed contact 650 is press-fitted, and a notch 215 covered by the curved portion 684 of the fixed contact 650. The notch 215 is provided to expose the fixed terminal portion 690 below the base portion 210.

  In addition, as described above, the partition wall 220 extends substantially in the X direction and rises upward in the Z direction on the base portion 210 of the base 200.

  The inside of the housing 20 is defined by the partition wall 220 into a contact block housing space 230 and a drive block housing space 240.

  In the present embodiment, the partition 220 has a shape having irregularities in the Y direction, so that the contact block housing space 230 and the drive block housing space 240 are formed on both sides of the partition 220 in the Y direction.

  Specifically, a substantially L-shaped area below the partition wall 220 is recessed in the Y direction, and the recessed portion is used as the contact block housing space 23.

  The contact block housing space 23 has a lower surface 232 a of the top wall 232, an upper surface 234 a of the bottom wall 234, and a contact between the side surface 231 a of the side wall 231 and the back wall 233 in a state where the base 210 is located below. It is defined by the side inner surface 233a.

  In the present embodiment, the bottom wall 234 is a part of the base 210, and the back wall 233 and the side wall 231 are a part of the partition 220.

  The side wall 231 is formed on the X-direction tip side of the partition movable contact portion 600 and the fixed contact portion 650.

  Further, a through hole 221 is formed in the inner wall 233 (partition wall 220). By inserting the pressing protrusion 521 of the armature block 50 into the through hole 221, the movable contact portion 600 is pressed by the pressing protrusion 521. I am trying to be.

  In the present embodiment, the through hole 221 is formed in a size corresponding to the pressing protrusion 521. That is, the through hole 221 is a hole having a size slightly larger than the pressing protrusion 521. As described above, by reducing the size of the through hole 221 into which the pressing protrusion 521 is inserted, the gap formed between the pressing protrusion 521 and the through hole 221 is reduced, and consumable powder is moved to the drive block housing space 240 side. Scattering can be suppressed.

  Furthermore, in the present embodiment, the distance from the fixed contact 660 in the contact portion with the bottom wall 234 of the contact block 60 is shortest when viewed from the moving direction of the movable contact 610 (when viewed from the Y direction). The pressing protrusion 521 is located between the shortest contact portion 60a and the fixed contact 660.

  That is, the through hole 221 is formed so as to be located between the shortest contact portion 60a and the fixed contact 660 when viewed from the Y direction.

  In the present embodiment, the fixed contact 660 side of the extending portion 682 of the fixed contact portion 650 is the shortest contact portion 60a.

  By doing so, the distance between the fixed contact 660 and the shortest contact portion 60a can be made relatively large, and short-circuiting and insulation deterioration due to scattering of consumable powder can be suppressed.

  Further, between the shortest contact portion 60a on the bottom wall 234 and the fixed contact 660, a protruding ridge 211a extending in the moving direction (Y direction) of the movable contact 610 and projecting upward is formed.

  In the present embodiment, two protrusions 211a are juxtaposed in the X direction. By forming the protruding ridges 211a in this way, the insulation distance between the fixed contact 660 and the shortest contact portion 60a can be increased, and the scattering of consumable powder in the shortest contact portion 60a can be suppressed. Can be.

  In the present embodiment, a concave portion 211 is formed in the side wall 231 in a direction away from the contact block 60. In this manner, by forming the concave portion 211 that is depressed in a direction away from the contact block 60, it is possible to prevent the consumable powder from adhering to the side wall 231 and to suppress the insulation deterioration at the side wall 231. Become like

  Further, a step 231a that is recessed toward the contact-side inner surface 233a (concave inward in the Y direction) is formed at an end of the side wall 231 on the side opposite to the contact-side inner surface 233a on the contact block 60 side (the cover 300 side). I have. When the step portion 231a is covered with the cover 300, the step portion 231a is formed between the cover 300 and the base 200 and serves as a gap communicating with the contact block housing space 230.

  By forming such a step portion 231a on the side wall 231, it is possible to suppress insulation deterioration in the cover 300.

  In the present embodiment, as shown in FIG. 32, the distance D1 from the contact block 50 to the lower surface 232a of the top wall 232 is set to be larger than the vertical width W3 of the movable contact 610.

  Specifically, the notch 232b is formed in the top wall 232, so that the space distance above the movable contact 610 is increased. As described above, by increasing the spatial distance above the movable contact 610, it is possible to suppress insulation deterioration at the ceiling wall 232.

  Further, in the present embodiment, a ridge 233b is formed above the contact block 60 on the contact side inner surface 233a of the back wall 233 (partition wall 220). By forming the ridge 233b, the contact block 60 and the top wall 232 can be more reliably insulated from each other, and the insulation deterioration at the top wall 232 can be further suppressed.

  In the present embodiment, in a state viewed from the moving direction of the movable contact 610 (a state viewed from the Y direction), a portion corresponding to the movable contact 610 on the contact side inner surface 233a of the inner wall 233 (partition wall 220) is provided. A concave portion 233c that is recessed in a direction away from the movable contact 610 is formed.

  The concave portion 233c is formed such that all of the two movable contacts 610, 610 exist in the region of the concave portion 233c when viewed from the Y direction.

  By forming such a concave portion 233c, it is possible to suppress insulation deterioration at the back wall 233 (partition wall 220).

  On the other hand, on the drive block housing space 240 side of the partition wall 220, a separation wall 222 extending substantially in the X direction and projecting in the Y direction is formed. The drive block housing space 240 is divided into a coil housing space 250 and an armature block housing space 260 by the separation wall 222.

  In the present embodiment, when the drive block 40 is mounted on the base 200 and the body 810 extends in the horizontal direction (X direction), the separation wall 222 is configured such that the tip 222 a of the separation wall 222 It protrudes from the coil 72 from one end to the other end in the direction (extending direction of the trunk portion 810) (see FIG. 30).

  That is, the separation wall 222 is formed such that the entire coil 72 exists in the region of the separation wall 222 when viewed from above (see FIG. 30C).

  Further, in the present embodiment, a through hole 221 is formed at the center of the separation wall 222 in the X direction.

  As described above, the separation wall 222 is spread over the entire coil 72, and the through-hole 221 is formed in the center of the separation wall 222 in the X direction, so that both ends of the coil 72 and the contact block 60 through the through-hole 221 are connected. The insulation distance b can be increased (see FIG. 30B).

  Further, in the present embodiment, the insulation distance between the coil 72 and the contact block 50 via the through hole 221 at the center of the separation wall 222 in the X direction is made longer.

  Specifically, an upper protruding portion (moving-body-side convex portion which is at least one of the moving-body-side concave portion and the moving-body-side convex portion) 523 is formed in a portion of the moving body 520 facing the partition wall 220.

  The upper protrusion 523 is formed so as to be positioned between the separation wall 222 and the through hole 221 (the pressing protrusion 521) in the vertical direction when the armature block 50 is assembled to the base 20. Further, the through hole 221 (pressing protrusion 521) is located at the center of the upper protrusion 523 in the X direction.

  Then, a separation plate side concave portion 261 into which the upper projecting portion (moving body side convex portion) 523 is inserted is formed in a portion of the separating wall 222 corresponding to the upper projecting portion (moving body side convex portion) 523.

  When the moving body 520 has a moving body side concave portion, the separation wall 222 has a separating plate side convex portion inserted into the moving body side concave portion.

  In this way, by forming the separation plate side concave portion 261 to be inserted into the upper protrusion (moving body side protrusion) 523 and the upper protrusion (moving body side protrusion) 523, the separation wall 222 penetrates in the center in the X direction. The insulation distance c between the coil 72 and the contact block 60 via the hole 221 can be increased (see FIG. 36).

  Further, in the present embodiment, the moving body 520 is formed so as to cover the entire circumference of the arm portion 511. In other words, the armature 510 is exposed only on both sides in the X direction (the support portion 512 side and the magnetic pole portion 513 side), and the portion where the moving body 520 is formed moves all around from one end to the other end in the X direction. Covered with body 520.

  Although a concave portion 522 is formed on the opposite side of the pressing protrusion 521 of the moving body 520, the armature 510 is not exposed at the portion where the concave portion 522 is formed (see FIG. 18).

  Then, the drive block 40 is mounted on the base 200 on the side of the moving body 520 where the pressing protrusion 521 is formed, and the body 810 of the iron core 800 is moved in the horizontal direction (X direction) while the extending direction of the body 810 is set in the horizontal direction (X direction). A protrusion 524 is formed to extend from the upper surface 520a to the lower surface 520b of the body 520.

  In the present embodiment, the pressing protrusion 521 is formed closer to the magnetic pole portion 513 than the horizontal center C3 of the armature 510 when viewed from the Y direction. 524 are formed.

  In this manner, by forming the protrusion 524 on the magnetic pole portion 513 side of the moving body 520, the insulation distance d between the magnetic pole portion 513 and the contact block 50 via the through hole 221 is made longer (FIG. 34).

  A concave ridge 262 is formed at a portion of the partition 220 corresponding to the protrusion 524 so that the protrusion 524 does not interfere with the partition 220 when the armature block 50 is swung.

  Further, a guide groove 216 is formed on the armature block housing space 260 side of the base portion 210. Then, the guide protrusion 525 formed on the moving body 520 of the armature block 50 is introduced into the guide groove 216 so that the swing of the armature block 50 is guided.

  A groove 217 is also formed in the center of the base portion 210 in the X direction on the armature block housing space 260 side (a portion corresponding to the through hole 211), and the groove 217 makes contact with the coil 72 and the armature 510. The insulation distance from the block 60 is ensured.

  Further, in the present embodiment, the partition wall 220 has the upper end 220a positioned above the iron core 800 in a state where the drive block 40 is assembled to the base 200 and the extending direction of the body 810 is in the horizontal direction (X direction). It is formed so that.

  When the partition wall 220 is viewed from the side where the contact block 60 is assembled (when viewed from the Y direction), the iron core 800 is not exposed from the upper end 220a of the partition wall 220. This makes it possible to increase the insulation distance e between the iron core 800 (drive block 40) and the contact block 60 (see FIG. 33).

  The partition 220 has the drive block 40 mounted on the base 200 and the trunk 810 extending in the horizontal direction (X direction) in a state where the trunk 810 extends in the iron core 800 (X direction). A side wall 270 is formed to cover the end surface 800a.

  Then, when the side wall 270 is viewed from the outside in the X direction (the extending direction of the trunk portion 810), the end face 800a is not exposed.

  This also makes it possible to increase the insulation distance f between the iron core 800 (drive block 40) and the contact block 60 (see FIGS. 33 and 37).

  In the side wall 270, the contact block 60 is attached to the base 200, and the body 810 extends in the horizontal direction (X direction). An extension wall 271 is formed to cover the end surfaces 600a and 650a (in the extending direction of 810).

  Then, when the extension wall 271 is viewed from the outside in the X direction (extending direction of the trunk portion 810), the end surface 600a of the movable contact portion 600 and the end surface 650a of the fixed contact portion 650 are not exposed.

  By doing so, the insulation distance f between the armature 510 (drive block 40) and the contact block 60 can be made longer.

  Assembling of the drive block 40 and the contact block 60 to the base 200 can be performed, for example, as follows.

  First, the armature block 50 is housed in the armature block housing space 260 of the base 200. At this time, the pressing protrusion 521 is inserted into the through hole 221, and the guide protrusion 525 is stored in a state of being inserted into the guide groove 216.

  Thereafter, the coil block 70 is inserted into the base 200 from above and assembled.

  In addition, the coil terminal insertion hole 201 is formed in the base 200 so as to penetrate vertically from the partition wall 220 to the base 210.

  The base 200 has positioning portions 219 into which the tips 821 and 832 of the legs 820 and 830 are inserted to position the iron core 800 with respect to the base 200.

  Further, a guide groove 272 for guiding the legs 820 and 830 to the positioning portion 219 is formed in the side wall 271 formed on the base 200.

  Therefore, in the present embodiment, the coil block 70 is assembled to the base 200 while the terminal portions 930 of the coil terminals 900 are inserted into the coil terminal insertion holes 201 and the legs 820 and 830 are guided by the guide grooves 272. .

  By inserting the support portions 512 of the armature block 50 into the space 70a and the magnetic pole portions 513 into the space 70b, the tips 821 and 832 of the legs 820 and 830 are inserted into the positioning portion 219. The coil block 70 is assembled to the base 200.

  At this time, the engagement end 743 a of the support portion side protruding piece (positioning portion) 743 is engaged with the engagement protrusion 218 of the base 200.

  As described above, in the present embodiment, by assembling the iron core 800 and the coil frame 700, the positioning of the coil block 70 with the stroke of the armature block 50 stabilized on the base 200 can be performed by the support portion of the armature block 50. This is performed on the 512 side and the magnetic pole portion 513 side. By doing so, it is possible to suppress the occurrence of warpage in the coil frame 700 and the base 200, and it is possible to further stabilize the stroke and operation of the armature block 50.

  Then, the press-fitting piece 631 of the movable contact portion 600 is press-fitted into the press-fitting groove 212 formed on the armature block housing space 260 side of the base 200 (see FIG. 32). Thus, the movable contact portion 600 is assembled to the base 200 with the movable contact 610 housed in the armature block housing space 260. At this time, the operating piece 621 of the leaf spring 620 is pressed by the pressing protrusion 521, and the movable contact portion 600 changes from the free state shown in FIG. 24A to the biased state shown in FIG. That is, in the present embodiment, the movable contact portion 600 is assembled to the base 200 in a state where the operation piece 621 of the leaf spring 620 is urged in a direction away from the fixed contact 610.

  Then, with the movable contact portion 600 assembled to the base 200, the press-fitting piece 681 of the fixed contact portion 650 is press-fitted into the press-fitting groove 223 of the base 200, and the press-fitting piece 683 is press-fitted into the press-fitting groove 214 of the base 200. In this manner, the fixed contact portion 650 is assembled to the base 200 in a state where the fixed contact 660 is housed in the armature block housing space 260 while facing the movable contact 610 (see FIG. 33).

  Then, the electromagnetic relay 1 is assembled by attaching the cover 300 from above, fixing it with the adhesive 100, and heat sealing the hole 301.

  The assembling order when assembling the drive block 40 and the contact block 60 to the base 200 needs to assemble the coil block 70 after the positive block 50, but the assembling order of the other members is limited to the above order. is not.

    Next, the operation of the electromagnetic relay 1 will be described.

  First, when no voltage is applied to the coil 72 of the coil block 70 (no current is supplied), the armature block 50 is urged in a direction away from the partition wall 220 by the urging force of the movable contact portion 600. Therefore, the movable contact 610 and the fixed contact 660 are separated from each other, and the magnetic pole portion 513 of the armature block 50 is separated from the leg 830 of the iron core 800 (see FIG. 34). At this time, the movement (rotation) of the magnetic pole portion 513 is regulated by the magnetic pole portion side projecting piece (regulating portion) 744 (see FIG. 38).

  When a voltage is applied (energized) to the coil 72 of the coil block 70 to excite the coil 72, a magnetic force is generated between the magnetic pole surface 513a of the magnetic pole portion 513 and the magnetic pole surface 831 of the leg portion 830, The magnetic pole 513 is attracted to the leg 830. That is, the armature block 50 rotates around the shaft 512a of the support portion 512.

  Then, with the rotation of the armature block 50, the pressing protrusion 521 of the moving body 520 also moves, and the pressing protrusion 521 presses the operating piece 621 of the movable contact portion 600 to move the operating piece 621 to the fixed contact portion 650. Move to the side. Thus, the movable contact 610 attached to the operation piece 621 contacts the fixed contact 72.

  On the other hand, when the voltage application to the coil 72 is released (discontinuation of electricity), the movable contact 610 is separated from the fixed contact 660 by the urging force of the movable contact portion 600, and the armature block 50 rotates in the opposite direction. The magnetic pole portion 513 is separated from the leg portion 830.

(2nd Embodiment)
The electromagnetic relay according to this embodiment has basically the same configuration as the electromagnetic relay 1 shown in the first embodiment, except that the hinge spring 743A is attached to the coil frame 700. This is different from the embodiment.

  As shown in FIGS. 39 and 40, the hinge spring 743A is attached to an attachment hole 743B formed in the coil frame 700 so as to extend downward.

  The hinge spring 743A according to the present embodiment also positions the support portion 512 of the armature block 50, similarly to the support portion-side protruding piece 743 shown in the first embodiment.

  Further, in the present embodiment, the hinge spring 743A presses the support portion 512 toward one leg portion 820 of the iron core 800.

  By doing so, it is possible to suppress the lower portion of the support portion 512 from floating.

  At this time, in a side view (a state viewed from the Y direction) in a state where the extending direction of the arm portion 511 is set to the horizontal direction and the width direction of the arm portion 511 is set to the up and down direction, the hinge spring 743A moves the support portion 512 up and down. It presses the center part in the direction.

  In this manner, by pressing the center of the support portion 512 in the vertical direction by the hinge spring 743A, the center of gravity and the vicinity of the center of the magnetic force of the support portion 512 are pressed, and the armature block 50 is inclined. Can be suppressed.

(Third embodiment)
The electromagnetic relay according to the present embodiment has basically the same configuration as the electromagnetic relay 1 shown in the first embodiment, except that the support portion 511 includes one leg 820 of the iron core 800 and the base 820. The second embodiment is different from the first embodiment in that the positioning is performed by the positioning unit 281 formed in the first embodiment 200.

  Further, the second embodiment is different from the first embodiment in that a restricting portion 282 for restricting the magnetic pole portion 513 from swinging in a direction away from the other leg portion 830 of the iron core 800 is formed on the base 200.

  As described above, in the present embodiment, since the positioning portion and the regulating portion are formed on the base 200, the support portion-side protruding piece 743 and the magnetic pole portion-side protruding piece 744 are provided on the coil frame 700 as shown in FIG. Not formed.

  Even if the positioning portion 281 and the regulating portion 281 are formed on the base 200 as in the present embodiment, variations due to dimensional errors and the like can be reduced, and operation stability can be further improved.

(Fourth embodiment)
The electromagnetic relay according to this embodiment has basically the same configuration as the electromagnetic relay 1 shown in the first embodiment, except that the coil frame 700 and the iron core 800 are integrally formed by insert molding. Is different from the first embodiment.

  Further, in the present embodiment, as shown in FIG. 46, the coil terminal 900 is also integrally formed by insert molding, and the coil frame block 71 is integrally formed.

  In this way, by forming at least the coil frame 700 and the iron core 800 integrally by insert molding, there is no need to perform an operation of assembling the iron core 800 to the coil frame 700, and the manufacturing can be easily performed. Further, the assembling accuracy can be improved as compared with the case where the iron core 800 is assembled to the coil frame 700.

  Further, when assembling the iron core 800 to the coil frame 700, it is necessary to secure the rigidity of the body portion 720 of the coil frame 700 in order to suppress the deformation of the coil frame 700. If they are integrally formed by molding, it is not necessary to increase the rigidity of the trunk portion 720.

  Therefore, it is not necessary to cover three surfaces (upper surface 812, lower surface 813, and one side surface 814) of the body 810 of the iron core 800 with the body 720 as in the first embodiment. That is, the coil frame 710 can be formed only on two mutually separated surfaces of the body 810 of the iron core 800.

  In the present embodiment, as shown in FIG. 48, only the upper surface 812 and the lower surface 813 (two surfaces separated from each other) are covered with the body 720 of the coil frame 700.

  In this manner, by winding the coil 72 around the body 810 in a state where the side surfaces 814 and 815 are not covered by the body 720, it is possible to wind more coils 72, and the coil block. The magnetic force can be improved without increasing the size of 70.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and various modifications are possible.

  For example, the specifications (shape, size, layout, etc.) of the base, the contact block, and other details can be appropriately changed.

DESCRIPTION OF SYMBOLS 1 Electromagnetic relay 40 Drive block 50 Armature block 510 Armature 511 Arm part 512 Support part 513 Magnetic pole part (The width is expanded up and down.)
513a Magnetic pole surface (opposed to the magnetic pole surface formed on the leg of the iron core)
520 Moving body 521 Pressing protrusion 60 Contact block 610 Movable contact 660 Fixed contact 70 Coil block 72 Coil 700 Coil frame 800 Iron core 810 Body 820 Leg 830 Leg C3 Horizontal center

Claims (3)

A contact block having a fixed contact portion on which a fixed contact is formed, and a movable contact portion on which a movable contact that contacts and separates from the fixed contact is formed;
A drive block that moves the movable contact so as to be able to contact and separate from the fixed contact,
With
The drive block includes:
Iron having a trunk extending in one direction and legs extending downward from both ends of the trunk in the extending direction with the trunk extending in a horizontal direction. Wick and
A coil frame to which the iron core is attached;
A coil wound with a coil frame interposed in the body of the iron core;
An armature that is arranged to extend from one leg to the other leg of the iron core and swings around one end,
A moving body that moves with the swing of the armature,
With
The armature is
A support portion that is the axis facing one leg of the iron core;
A magnetic pole portion facing the other leg portion of the iron core;
An arm unit that connects the support part and the magnetic pole part in a row, and swings the magnetic pole part around the support part as an axis, so that the magnetic pole part approaches and separates from the other leg of the iron core.
With
The moving body is provided on the arm portion, and the moving body is formed with a pressing protrusion for pressing the movable contact,
The pressing protrusion is formed closer to the magnetic pole portion than the horizontal center of the armature in a side view in a state where the extending direction of the arm portion is the horizontal direction and the width direction of the arm portion is the vertical direction. and,
At least one of the upper surface and the lower surface of the support portion,
(1) The side of the upper surface and the lower surface of the moving body is closer to the one of the upper surface and the lower surface when viewed in a side view in a state where the extending direction of the arm unit is the horizontal direction and the width direction of the arm unit is the vertical direction. Located at the center in the vertical direction,
Or
(2) a flat surface in a side view in a state where the extending direction of the arm portion is the horizontal direction and the width direction of the arm portion is the vertical direction;
An electromagnetic relay, which is at least one of (1) and (2) .   The armature is substantially line-symmetric with respect to a horizontal line at the center in the vertical direction in a side view in a state where the extending direction of the arm portion is the horizontal direction and the width direction of the arm portion is the vertical direction. The electromagnetic relay according to claim 1, wherein: A contact block having a fixed contact portion on which a fixed contact is formed, and a movable contact portion on which a movable contact that contacts and separates from the fixed contact is formed;
A drive block that moves the movable contact so as to be able to contact and separate from the fixed contact,
With
The drive block includes:
Iron having a body extending in one direction and legs extending downward from both ends of the body in the extending direction with the body extending in a horizontal direction. Wick and
A coil frame to which the iron core is attached;
A coil wound with a coil frame interposed in the body of the iron core;
An armature that is arranged to extend from one leg to the other leg of the iron core and swings around one end;
A moving body that moves with the swing of the armature,
With
The armature is
A support portion that is the axis facing one leg of the iron core;
A magnetic pole portion facing the other leg portion of the iron core;
An arm unit that connects the support part and the magnetic pole part in a row, and swings the magnetic pole part around the support part as an axis, so that the magnetic pole part approaches and separates from the other leg of the iron core.
With
The movable body is provided on the arm portion, and the movable body is formed with a pressing protrusion for pressing the movable contact,
The pressing protrusion is formed closer to the magnetic pole portion than the horizontal center of the armature in a side view in a state where the extending direction of the arm portion is the horizontal direction and the width direction of the arm portion is the vertical direction. And
The armature is substantially line-symmetric with respect to the horizontal line at the center in the vertical direction in a side view in a state where the extending direction of the arm portion is the horizontal direction and the width direction of the arm portion is the vertical direction. An electromagnetic relay characterized by the following.

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