JP6598056B2 - Electromagnetic relay - Google Patents

Description

  The present invention relates to an electromagnetic relay.

  Conventionally, as an electromagnetic relay, an assembly based on a contact block having a fixed contact and a movable contact that contacts and separates from the fixed contact and a drive block that moves the movable contact so as to be movable toward and away from the fixed contact is available. It is known (see, for example, Patent Document 1).

  In Patent Document 1, the drive block includes an iron core having a body portion extending in the horizontal direction and a pair of legs extending downward from both ends of the body portion, a spool to which the iron core is assembled, an iron A coil block having a coil wound around a spool having a core assembled 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 iron core legs, and the coil block is switched between excitation and non-excitation so that the other end is an iron core leg. The armature which rocks so that it may approach and separate from a part is provided. This armature includes an arm part body extending in the horizontal direction, a support part formed at one end of the arm part body in the horizontal direction and serving as an axis when swinging, and a magnetic pole part formed at the other end in the horizontal direction. ing.

  Further, the armature block includes a card that has an operation projection that comes into contact with the movable contact portion and moves as the armature swings.

  As described above, in Patent Document 1, the operation projection 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 fixed as the operation projection moves. It is moved so as to be close to and away from.

JP 2013-218885 A

  By the way, in the above-described conventional technique, the tip of the movable contact piece and the tip of the fixed contact piece are cut away to increase the distance between the movable contact and the base inner surface and the distance between the fixed contact and the base inner surface. Insulation degradation due to the adhering powder of the adhering to the inner surface of the base is suppressed.

  As described above, in the above conventional technique, it is possible to suppress the electromagnetic relay from being deteriorated in insulation, but it is preferable to be able to more reliably suppress the deterioration in insulation of the electromagnetic relay.

  Then, an object of this invention is to obtain the electromagnetic relay which can suppress insulation deterioration more reliably.

An electromagnetic relay according to the present invention includes a contact block having a fixed contact portion in which a fixed contact is formed, and a movable contact portion in which a movable contact that contacts and separates from the fixed contact is formed, and the movable contact is connected to the fixed contact. A drive block that is movably moved toward and away from the base, and a base on which the contact block and the drive block are assembled, the drive block extending in one direction, and the extension of the barrel In a state where the direction is the horizontal direction, the iron core having a leg portion extending downward from both ends in the extending direction of the trunk portion, a coil frame on which the iron core is assembled, and the iron core A coil wound with a coil frame interposed in the body portion of the iron core, and arranged to extend from one leg portion of the iron core to the other leg portion, and swings about one end portion as an axis With the armature and the swinging of the armature A movable body, and the armature includes a support portion serving as the shaft facing one leg portion of the iron core, and a magnetic pole portion facing the other leg portion of the iron core. An arm portion that continuously connects the support portion and the magnetic pole portion and swings the magnetic pole portion so as to approach and separate from the other leg portion of the iron core with the support portion as an axis. The moving body is provided on the arm portion, and a pressing protrusion for pressing the movable contact is formed on the moving body, and the contact block and the drive block are separated on the base. An insulating partition is formed, and the partition has a through-hole into which the pressing protrusion is inserted having a size corresponding to the pressing protrusion, and a contact block storage space in which the contact block is stored. Formed, the contact block accommodating space In a state where the through hole of the partition wall is arranged so as to be located below the coil has been defined by the side surface of the top and side walls of the lower surface and the bottom wall of the top wall and the contact side inner surface of the partition wall In the state viewed from the moving direction of the movable contact, the shortest contact portion of the contact portion with the bottom wall of the contact block that is the shortest distance from the fixed contact, and the fixed contact, The pressing protrusion is located.

  According to the present disclosure, an electromagnetic relay that can more reliably suppress insulation deterioration can be obtained.

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. It is the figure which decomposed | disassembled and showed the electromagnetic relay concerning 1st Embodiment of this invention, Comprising: It is the perspective view seen from one direction. It is a figure which decomposes | disassembles and shows the electromagnetic relay concerning 1st Embodiment of this invention, Comprising: It is the perspective view seen from the other direction. It is a figure which shows the state which removed the cover of 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. It is a figure which shows the drive 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. It is the figure which decomposed | disassembles and shows the drive block concerning 1st Embodiment of this invention to a coil block and an armature block, Comprising: It is the perspective view seen from one direction. It is the figure which decomposed | disassembled and showed the drive block concerning 1st Embodiment of this invention to a coil block and an armature block, Comprising: It is the perspective view seen from the other direction. It is the figure which exploded and shows the coil block concerning 1st Embodiment of this invention, Comprising: It is the perspective view seen from one direction. It is a figure which decomposes | disassembles and shows the coil block concerning 1st Embodiment of this invention, Comprising: It is the perspective view seen from the other 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 which shows the coil frame concerning 1st Embodiment of this invention, Comprising: It is the perspective view seen from the side by which an iron core is inserted. It is a figure which shows the coil frame concerning 1st Embodiment of this invention, Comprising: (a) is the side view seen from the side by which an iron core is inserted, (b) was seen from the side from which a coil binding part protrudes It is a side view. It is a perspective view which shows the state by which the iron core was inserted in the coil frame concerning 1st Embodiment of this invention. It is a figure which shows the coil frame block concerning 1st Embodiment of this invention, Comprising: It is the 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 by which the coil was wound by the coil frame block. It is a figure which decomposes | disassembles and shows the armature 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. It is a figure which shows the armature block concerning 1st Embodiment of this invention, Comprising: (a) is the side view seen from the press 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, Comprising: It 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 of the iron core and armature 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. is there. It is a figure which shows the positional relationship of the iron core and armature block concerning 1st Embodiment of this invention, Comprising: It is the side view seen from the armature block side. It is a figure which shows the positional relationship of the iron core concerning 1st Embodiment of this invention, and an armature block, Comprising: It is the figure seen from the leg part tip side of the iron core. It is a figure which shows the positional relationship of the iron core and armature block concerning 1st Embodiment of this invention, Comprising: It is the figure seen from the 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. It is a figure which shows the movable contact part concerning 1st Embodiment of this invention, Comprising: (a) is a figure which shows the movable contact part in the free state before an assembly | attachment, (b) is after an assembly | attachment, and drives a drive block It is a figure which shows the movable contact part in the state which is not made to do. It is a figure which shows the positional relationship of the movable contact part concerning 1st Embodiment of this invention, and an armature block, Comprising: It is the perspective view seen from the movable contact part side. It is a figure which shows the positional relationship of the movable contact part and press protrusion concerning 1st Embodiment of this 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 which shows the contact block accommodation space of the base concerning 1st Embodiment of this invention. It is a perspective view which shows the drive block accommodation space of the base concerning 1st Embodiment of this invention. It is a figure which shows the positional relationship of the separation wall of the base concerning 1st Embodiment of this invention, and a coil, Comprising: (a) is a perspective view, (b) is the side view seen from the drive block accommodation space, (c). Is a plan view. It is a figure explaining the method to attach a drive block to the base concerning 1st Embodiment of this invention. It is a figure explaining the method of attaching a contact block to the base concerning 1st Embodiment of this invention, Comprising: It is a perspective view which shows the state which attached the movable contact part to the contact block accommodation space. It is a figure explaining the method of attaching a contact block to the base concerning 1st Embodiment of this invention, Comprising: It is a perspective view which shows the state which attached the fixed contact part to the contact block accommodation space. It is sectional drawing which shows the state which the contact of the electromagnetic relay concerning 1st Embodiment of this invention is open. It is sectional drawing which shows the state which the contact of the electromagnetic relay concerning 1st Embodiment of this invention is closing. It is sectional drawing explaining the insulation distance from the coil to a movable contact part in the electromagnetic relay concerning 1st Embodiment of this invention. It is sectional drawing explaining the insulation distance from the armature in the electromagnetic relay concerning 1st Embodiment of this invention to a movable contact part. It is sectional drawing explaining the relationship between the upper side protrusion of the armature block in the electromagnetic relay concerning 1st Embodiment of this invention, and the partition of a base. It is a perspective view which shows the state which removed the cover of the electromagnetic relay concerning 2nd Embodiment of this invention. It is a perspective view which shows the state which decomposed | disassembled the coil frame and leaf | plate spring concerning 2nd Embodiment of this invention. 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 is supported by the leaf | plate spring and the iron core. It is a perspective view which shows the state which removed the cover of the electromagnetic relay concerning 3rd Embodiment of this invention. It is a perspective view which shows the base concerning 3rd Embodiment of this invention. It is a perspective view which shows the coil frame concerning 3rd Embodiment of this invention. It is sectional drawing of the electromagnetic relay concerning 3rd Embodiment of this invention, Comprising: It is sectional drawing which shows the state by which the support part of an armature is supported by the base and the iron core. It is a perspective view which shows the coil frame block concerning 4th Embodiment of this invention. It is a perspective view which shows the coil block concerning 4th Embodiment of this invention. It is sectional drawing which shows the coil block concerning 4th Embodiment of this invention, Comprising: It is sectional drawing which shows the state by which the coil was wound by the 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 as the width direction Y, and the thickness direction of the electromagnetic relay as the up-down direction Z.

  Note that similar components are included in the following embodiments. Therefore, in the following, common reference numerals are given to those similar components, and redundant description is omitted.

(First embodiment)
As shown in FIGS. 1 and 2, the electromagnetic relay 1 according to this embodiment includes a substantially rectangular parallelepiped housing 20.

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

  Then, the contact device 10 is accommodated in 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 from the fixed contact 660, and It is comprised by.

  That is, in the housing 20, a contact block 60 having a fixed contact 660 and a movable contact 610 that contacts and separates from the fixed contact 660, and a drive block that moves the movable contact 610 to and from the fixed contact 660. 40 are accommodated.

  In addition, in the state which covered the base 200 with which the contact apparatus 10 was assembled | attached with the cover 300, while applying the adhesive agent 100 to the back surface side of the base 200, while fixing the contact apparatus 10 to the base 200, the base 200 and the cover 300 is fixed (see FIG. 4).

  In the present embodiment, the top wall portion of the cover 300 is provided with a hole 301 for performing heat sealing, and a step portion 302 for avoiding problems caused by a gate when the cover 300 is molded.

  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. By energizing the coil 72, the iron core 800 is used as an electromagnet. A coil block 70 to be functioned and an armature block 50 that swings by the action of the iron core 800 as an electromagnet are provided.

  In the present embodiment, the partition wall 220 is erected on the base portion 210 of the base 200 so as to extend substantially in the X direction and rise upward in the Z direction. By providing the partition 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 the partition wall 220 extending substantially in the X direction, and the respective spaces become the contact block accommodation space 230 and the drive block accommodation space 240 (FIG. 28). And FIG. 29).

  Furthermore, a separation wall 222 extending in the X direction and projecting 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 and 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.

  Thus, in this embodiment, the inside of the housing 20 is mainly divided into three spaces (contact block accommodation space 230, coil accommodation space 250, and armature block accommodation space 260). The contact block 60, the coil block 70, and the armature block 50 are accommodated in the respective spaces.

  In this 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 portion 810 extending in the X direction (one direction) and both end portions in the extending direction of the body portion 810 in a state where the extending direction of the body portion is a horizontal direction (X direction). And an iron core 800 having legs 820 and 830 extending downward.

  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 assembled. Furthermore, the coil frame block 71 is electrically connected to the coil 72, and has a plurality (in this embodiment, one end electrically connected to the coil 72 and the other end protruding downward in the Z direction of the housing 20. 2) coil terminals 900 are provided. The coil terminal 900 is electrically connected to an external power source or the like, and the coil 72 is energized through the coil terminal 900.

  As shown in FIGS. 10 to 12, the coil frame 700 extends in the X direction, and has a barrel portion 720 around which the coil 72 is wound, and flange portions 710 provided at both ends of the barrel portion 720 in the X direction. It is equipped with.

  An opening 731 is formed on one side in the Y direction of the coil frame 700 (the partition 220 side in a state where the coil block 70 is assembled to 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 connected to the base wall portion 740 that is substantially C-shaped when viewed from the Y direction, and the upper portion of the base wall portion 740, and is one side in the Y direction. An upper wall 750 projecting to the lower side of the base wall 740, a lower wall 760 projecting to one side in the Y direction, and an extending wall 770 extending to both sides of the upper wall 750 in the X direction. It is defined.

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

  In the present embodiment, the extending walls 770 on both sides in the X direction are each provided with horizontal walls 711 extending substantially horizontally. Furthermore, the extending wall 770 on one side in the X direction (on the side of the support portion 512 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.

  And the iron core 800 is assembled | attached to the coil frame 700 by inserting the trunk | drum 810 of the iron core 800 and the upper side (body | drum 810 side) of the leg parts 820 and 830 in this groove part 730 (refer FIG. 13).

  In the present embodiment, press-fit ribs 751 and 751 are provided at positions corresponding to the flange portions 710 and 710 on the groove portion 730 side of the upper wall (wall portion defining the groove portion 730) 750, and the iron core 800 is provided in the groove portion 730. To press fit. Furthermore, in this embodiment, the press-fitting ribs 751 and 751 are provided at locations where the flange portions 710 and 710 are formed so as to extend along the inner periphery of the flange portions 710 and 710. Therefore, when the iron core 800 is press-fitted into the groove portion 730, pressure input from the inner peripheral surface of the flange portions 710 and 710 toward the outer peripheral direction of the flange portions 710 and 710 is generated. In this manner, the deformation of the coil frame 710 is suppressed by generating pressure input in the outer peripheral direction of the collar portion.

  Further, the iron core 800 press-fitted (inserted) into the groove 730 on the inner surface of the hanging wall (wall defining the groove 730) 772 on the groove 730 side is moved in the direction of releasing (opening 731 side). The suppressing projection 780 is formed.

  In this embodiment, the amount of protrusion increases as it goes toward the back side (base wall 740 side) of the groove 730, and the back side (base wall 740 side) surface is a substantially right angle that is a flat surface substantially parallel to the base wall 740. A triangular protrusion 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 portion 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 portion 730. be able to. On the other hand, in a state where the iron core 800 is press-fitted (inserted) into the groove portion 730, the side surface (surface on the opening 731 side) of the iron core 800 is pressed by the surface on the back side (base wall 740 side) of the protrusion 780. It can suppress more reliably that the iron core 800 press-fit (inserted) in 730 moves in the direction (opening 731 side) to detach | leave.

  Furthermore, in the present embodiment, the drooping wall (wall portion defining the groove portion 730) 772 and the base wall (groove portion 730 are defined) as viewed from the Y direction (direction in which the iron core 800 is inserted into the groove portion 730). In the portion corresponding to the projection 780 in the wall portion 740, an escape portion 781 that exposes the entire projection 780 is formed.

  By forming the relief portion 781, the height of the protrusion 780 can be easily adjusted when the coil frame 700 is resin-molded 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 part 513 side of the armature 510 to be 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 part 513 side of the armature 510). Thus, when fixing by chucking, the projection 780 is formed on the opposite surface, which is a portion that tends to float on the lever principle, 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 suppressed.

  Further, the iron core 800 is provided with a concavo-convex portion 811 in order to reduce the magnetic flux density or prevent erroneous insertion, and the shape of the groove portion 730 corresponds to the shape of the concavo-convex portion 811. It is trying to become.

  The coil terminal 900 includes a terminal binding portion 910 where the start end 721 and the end end 722 of the coil 72 are bound, a press-fitting piece 920 that is press-fitted into the coil frame 700 and fixes the coil terminal 900 to the coil frame 700, and the housing 20. A terminal portion 930 that is exposed to the outside and electrically connected to an external power source or the like.

  In this embodiment, the coil terminal 900 on the outer side in the X direction protrudes from the coil hole 700 to the insertion hole 771a formed in the horizontal wall 771 on one side in the X direction (the magnetic pole part 513 side of the armature 510). The terminal binding portion 910 is inserted so as to be fixed, and the press-fitting side 920 is press-fitted into the press-fitting groove 772 a formed in the hanging wall 772, so that the coil frame 700 is fixed.

  On the other hand, the coil terminal 900 on the inner side in the X direction has an insertion hole 771a formed in the horizontal wall 771 on one side in the X direction (the magnetic pole part 513 side of the armature 510) so that the tip protrudes 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, so that the coil frame 700 is fixed.

  As described above, the coil frame 700 is formed by resin molding using a mold, and the 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 on the coil frame 700 according to the present embodiment. In this way, by forming the coil frame 700 using two (at least two) resin gates, it becomes possible to reliably fill the resin with large portions of the molding volume on both sides in the X direction. As a result, the tolerance of molding conditions is widened, and molding under more optimal molding conditions becomes possible. In addition, the molding flow can be stabilized, and the warpage can be reduced. In addition, variation in warpage can be reduced. As a result, the coil frame 700 can be formed with higher accuracy.

  Furthermore, in this embodiment, two resin gate traces 741 are formed in the vicinity of the flange portion 710 formed in the coil frame 700. That is, two resin gate traces 741 are formed in the vicinity of the flange portions 710 on both sides in the X direction, which are large portions of the molding volume.

  A bulging portion 742 is formed on the coil frame 700 on the opposite side of the resin gate mark 741. Thus, the rigidity of the coil frame 700 can be ensured by providing the bulging portion 742 to increase the thickness.

  Further, in the present embodiment, a support portion side protruding piece (positioning portion) 743 that protrudes downward is continuously provided at the lower end of the hanging wall 772. At this time, the support portion side protruding piece (positioning portion) 743 is connected to the lower portion of 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 is extended in the Y direction, and the support portion side protruding piece (positioning portion) 743 is formed so as to extend downward from the tip of the extended portion. In this way, 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 in the upper part of the extended portion (the upper part of the support part side protruding piece 743) is defined as a coil lead-out space 790. In addition, the upper surface of the extending portion that defines the lower end of the coil lead-out space 790 has a smooth curve that protrudes downward so that the drawn-out coil can be easily entangled with the terminal binding portion 910. It is a surface.

  In the present embodiment, a bulging portion 742 is formed in the coil lead-out space 790. Therefore, the surface of the bulging portion 742 is a smooth curved surface on which no edge is formed so that the coil 72 can be prevented from being cut by the edge.

  The coil frame block 71 is formed by attaching the coil terminal 900 to the coil frame 700 assembled with the iron core 800, the coil 72 is wound around the body 810 and the body 720, and the start end 721 and the end 722 are connected to the coil outlet. The coil block 70 is formed by pulling out from the coil 791 into the coil lead-out space 790 and tying the terminal tying portion 910 of the coil terminal 900.

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

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

  In addition, the support part side protrusion piece (positioning part) 743 is a plate for pressing the support part 512 of the armature 510 and has a substantially L shape (see FIG. 34). Further, an engaging end 743 a that engages with the engaging protrusion 218 of the base 200 is provided at the lower end of the support portion side protruding piece (positioning portion) 743.

  On the other hand, at the lower end of the base wall 740 on the other side in the X direction (the magnetic pole part 513 side of the armature 510), a magnetic pole part side protruding piece (regulating part) 744 protruding downward is connected.

  At this time, the magnetic pole part side protruding piece (restricting part) 744 is continuously provided at the lower part of 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 part side protruding piece (regulating part) 744 is formed so as to extend downward from the tip of the extended part.

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

  A space portion 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 (restricting portion) 744 (see FIG. (See FIG. 7).

  Then, in a state where the magnetic pole part 513 of the armature 510 is inserted into the space part 70b, the mutually opposing surfaces of the magnetic pole part 513 and the leg part 830 become 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 portion 820 to the other leg portion 830 of the iron core 800, and the armature 510 swinging with one end portion as an axis 512a, and the armature 510 swinging. And a moving body 520 that moves with movement.

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

  In the present embodiment, the armature 510 is viewed from the side (when viewed from the Y direction) when 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. It is substantially line symmetric with respect to the horizontal line at the center in the vertical direction.

  In the present embodiment, a line segment L, which will be described later, is substantially coincident with a horizontal line at the center in the vertical direction, and is substantially line symmetric with respect to the line segment L.

  Specifically, the support portion 512 has a quadrangular shape that is substantially line symmetric with respect to the line segment L, and the magnetic pole portion 513 also projects upward and downward from the arm portion 511, but is substantially It has a line-symmetric square shape. Further, the arm portion 511 connecting the support portion 512 and the magnetic pole portion 513 has a quadrangular shape that is substantially line symmetric with respect to the line segment L.

  Further, the upper surface 512b of the support portion 512 in a side view (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 vertical direction, and The lower surface 512c is a flat surface.

  Further, the upper surface 512b of the support portion 512b in a side view (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 vertical direction, 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 an extending portion (a shaft portion pivotally supported by the coil frame 700 or the base 200) extending in the vertical direction (Z direction). If it carries out like this, the weight of the armature block 50 will become light and it will become difficult to incline.

  In addition, since the extending portion extending in the vertical direction is not provided in the support portion 512, in the present embodiment, one of the leg portion 820 of the iron core 800, the coil frame 700, and the base 200 is selected. The support part 512 is positioned by the positioning part formed on either side. In this way, as compared with the case where the support portion 512 is positioned by both the coil frame 700 and the base 200, the assembling error can be reduced and the assembling can be performed 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. In this way, by forming the support portion side protruding piece (positioning portion) 743 in the coil frame 700 to which the iron core 800 is assembled, the assembly error can be further reduced.

  In addition, a restriction portion that restricts the magnetic pole portion 513 from swinging in a direction away from the other leg portion 830 of the iron core 800 is formed in one of the coil frame 700 and the base 200. If it carries out like this, it will come to be able to assemble more accurately, 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 protruding piece (regulator part) 744 is formed on the coil frame 700.

  As described above, in this embodiment, the positioning of the support portion 512 and the description of the swing range of the magnetic pole portion 513 are described with respect to the support portion side protruding piece (positioning portion) 743 and the magnetic pole portion side protruding piece ( (Regulatory part) 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 portion 511 of the armature 510. The moving body 520 is formed by resin molding using a mold, and the armature 510 may be press-fitted into the moving body 520 formed separately from the armature 510, or the armature 510 and the moving body 520 may be integrally formed by insert molding.

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

  The moving body 520 is formed with a pressing protrusion 521 that presses the movable contact 610.

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

  Further, the pressing protrusion 21 can be formed on a line segment connecting the magnetic center of the support portion 512 and the magnetic force 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 and the center of magnetic force of the magnetic pole portion 513 are substantially matched. . Accordingly, the line segment connecting the magnetic center of the support portion 512 and the magnetic center of the magnetic pole portion 513 is also substantially coincident with the line segment L connecting the gravity center C1 of the support portion 512 and the gravity center C2 of the magnetic pole portion 513.

  Furthermore, in this embodiment, the line segment is viewed in a side view (as 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 vertical direction. L is set to be substantially horizontal.

  In other words, in the present embodiment, the center of gravity (magnetic center) C1 of the pressing protrusion 521, the support portion 512, and the center of gravity (magnetic center) C2 of the magnetic pole portion 513 are set to substantially the same height position. Further, the pressing protrusion 521, the center of gravity (magnetic center) C1 of the support portion 512, and the center of gravity (magnetic center) C2 of the magnetic pole portion 513 are positioned between the upper and lower ends of the armature block 50.

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

  Further, in the present embodiment, the pressing protrusion 521 is a side view 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 vertical direction (viewed from the Y direction). ) Is formed closer to the magnetic pole part 513 than the horizontal center C3 of the armature 510.

  Thus, when the pressing force of the pressing protrusion 521 is applied to the armature 510, the force that separates the support portion 512 from the iron core 800 is greater than the force that separates the magnetic pole portion 513 from the iron core 800. Get smaller. As a result, it is possible to suppress the lower portion of the support portion 512 of the armature 510 from floating. Further, it is not necessary to increase the force of the pressing plate that presses the support portion 512. For example, the support portion 512 is also formed by a protruding piece simply protruded from the coil frame 700, such as a supporting portion-side protruding piece (positioning portion) 743. Can be suppressed. If the pressing force when pressing the support portion 512 with the pressing plate is reduced, the generation of large friction when the armature block 50 is swung is suppressed, and the operational stability is improved. become able to.

  The contact block 60 has a fixed contact portion 650 in which a fixed contact 660 is formed, and a movable contact portion 600 in which a movable contact 610 that contacts and separates from the fixed contact 660 is formed.

  The movable contact portion 600 is formed with a movable contact 610 and has a plate 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.

  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 bent at one end in the X direction of the operating piece 621 so as to move the operating piece 621 in the Y direction. And.

  Further, the operating piece 621 is formed with a slit 621a extending substantially in the X direction, and the tip side is bifurcated. One movable contact 610 is fixed to each piece divided into two forks.

  Then, the operating piece 621 is moved in the Y direction by being pressed by the pressing protrusion 521, and the movable contact 610 is moved with the movement of the operating piece 621 to be in contact with and separated from the fixed contact 660.

  In the present embodiment, the pressing region R1 of the pressing protrusion 521 is set on the spring piece 622 side of the operating piece 621 as shown in FIGS. That is, the pressing protrusion 521 presses a portion of the operating piece 621 where the slit 621a is not formed. Furthermore, in this embodiment, the width in the vertical direction of the pressing region R1 (width in the plate width direction of the leaf spring 620) W1 is the plate width (width in the vertical direction) at the 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 made as small as possible, and the occurrence of a force that lifts the lower side of the armature block 50 is suppressed. Can do.

  Further, a fixed piece 630 is connected to one end of the spring piece 620 in the X direction, and the movable contact portion 600 is fixed to the base 200 by fixing the fixed piece 630 to the base 200.

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

  In addition, a movable terminal portion 640 exposed downward from the housing 20 is connected to the lower portion of the bending portion 632.

  Then, by pressing the press-fitting piece 631 into the press-fitting groove 212 of the base 200, the movable 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.

  Further, when the case 300 is fitted with the movable contact portion 600 fixed to the base 200, the bending portion 632 is positioned in the vicinity of 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 632 prevents the adhesive 100 from entering the inside, thereby suppressing the occurrence of malfunction or contact failure. .

  On the other hand, the fixed contact portion 650 has a plate portion 670 formed with a fixed contact 660 and having a plate thickness and a plate width. The portion of the fixed contact portion 650 excluding the fixed contact 660 can be formed by, for example, pressing and bending a single metal plate.

  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 front end side of the fixed contact portion 650).

  Further, a fixed piece 680 is connected to one end of the plate portion 670 in the X direction, and the fixed contact portion 650 is fixed to the base 200 by fixing the fixed piece 680 to the base 200.

  The fixed piece 680 protrudes in the Y direction from the press-fitting piece 681 extended upward and press-fitted into the press-fitting groove 223 of the base 200, the extended piece 682 extended downward, and the lower part of the extended piece 682. A press-fitting piece 683 that is press-fitted into the press-fitting groove 214 of the base 200, and a curved portion 684 that is connected to the press-fitting piece 683 and covers the notch 215 of the base 200.

  In addition, a fixed-side terminal portion 690 exposed downward from the housing 20 is connected to the lower portion of 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, so that the curved portion 684 covers the notch 215 and the fixed-side terminal portion 690 is 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.

  Further, when the case 300 is fitted with the fixed contact portion 650 fixed to the base 200, the curved portion 684 is positioned in the vicinity of 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 684 prevents entry of the adhesive 100 into the interior, thereby suppressing malfunctions and contact failures. .

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

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

  Further, as described above, the partition wall 220 is erected on the base portion 210 of the base 200 so as to extend substantially in the X direction and rise upward in the Z direction.

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

  In the present embodiment, the shape of the partition wall 220 is uneven 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 wall 220 in the Y direction.

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

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

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

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

  In addition, a through hole 221 is formed in the inner wall 233 (partition wall 220), and the movable contact portion 600 is pressed by the pressing protrusion 521 by inserting the pressing protrusion 521 of the armature block 50 into the through hole 221. 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 that is slightly larger than the pressing protrusion 521. Thus, by reducing 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, so that the consumable powder is moved to the drive block housing space 240 side. It is possible to suppress the scattering.

  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 the shortest when viewed from the moving direction of the movable contact 610 (viewed from the Y direction). The pressing protrusion 521 is positioned between the shortest contact portion 60a and the fixed contact 660.

  That is, the through hole 221 is formed so as to be positioned 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 extended portion 682 of the fixed contact portion 650 is the shortest contact portion 60a.

  In this way, the distance between the fixed contact 660 and the shortest contact portion 60a can be made relatively large, and short circuits and insulation deterioration due to scattering of consumable powder can be suppressed.

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

  In this embodiment, the two protrusions 211a are juxtaposed in the X direction. Thus, by forming the protrusion 211a, it is possible to increase the insulation distance between the fixed contact 660 and the shortest contact portion 60a, and to prevent the expendable powder from scattering to the shortest contact portion 60a. Can do.

  In the present embodiment, a recess 211 that is recessed in a direction away from the contact block 60 is formed in the side wall 231. Thus, by forming the concave portion 211 that is recessed in the direction away from the contact block 60, it is possible to suppress the consumable powder from adhering to the side wall 231 and to suppress the deterioration of insulation at the side wall 231. It becomes like this.

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

  By forming such a stepped portion 231 a on the side wall 231, insulation deterioration in the cover 300 can be suppressed.

  Further, 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 made larger than the vertical width W3 of the movable contact 610.

  Specifically, the notch 232 b is formed in the top wall 232 to increase the spatial distance above the movable contact 610. In this way, by increasing the spatial distance above the movable contact 610, it is possible to suppress insulation deterioration at the top wall 232.

  Furthermore, in this embodiment, the protrusion 233b is formed above the contact block 60 in the contact side inner surface 233a of the back wall 233 (partition wall 220). By forming the protrusion 233b, the contact block 60 and the ceiling wall 232 can be more reliably insulated, and insulation deterioration at the ceiling wall 232 can be further suppressed.

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

  The recess 233c is formed so that all of the two movable contacts 610, 610 are present in the region of the recess 233c when viewed from the Y direction.

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

  On the other hand, a partition wall 222 is formed on the drive block housing space 240 side of the partition wall 220 so as to extend substantially in the X direction and project in the Y direction. 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, the separation wall 222 is configured such that the tip 222a of the separation wall 222 is attached to the X in the coil 72 in a state where the drive block 40 is assembled to the base 200 and the extending direction of the body portion 810 is the horizontal direction (X direction). It protrudes from the coil 72 from one end to the other end in the direction (extending direction of the body portion 810) (see FIG. 30).

  That is, the separation wall 222 is formed so 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 in the central portion of the separation wall 222 in the X direction.

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

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

  Specifically, an upper protrusion (moving body side convex portion that 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 that faces 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 (pressing protrusion 521) in the vertical direction when the armature block 50 is assembled to the base 20. Further, the through-hole 221 (the pressing protrusion 521) is positioned at the center in the X direction of the upper protrusion 523.

  A separation plate side recess 261 into which the upper protrusion (movable body side convex portion) 523 is inserted is formed at a portion corresponding to the upper protrusion (movable body side convex portion) 523 in the separation wall 222.

  In addition, when the moving body side recessed part is formed in the moving body 520, the separation plate 222 is formed with a separation plate side protruding part that is inserted into the moving body side recessed part.

  In this way, by forming the separation plate side recess 261 inserted into the upper protrusion (movable body side convex portion) 523 and the upper protrusion (movable body side convex portion) 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 through the hole 221 can be increased (see FIG. 36).

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

  In addition, although the recessed part 522 is formed in the other side of the press protrusion 521 of the moving body 520, the armature 510 is not exposed also in the site | part in which this recessed part 522 was formed (refer FIG. 18).

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

  In the present embodiment, the pressing protrusion 521 is formed on the magnetic pole part 513 side with respect to the horizontal center C3 of the armature 510 when viewed from the Y direction. 524 is formed.

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

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

  A guide groove 216 is formed on the armature block housing space 260 side of the base portion 210. The guide protrusion 525 formed on the movable body 520 of the armature block 50 is introduced into the guide groove 216 so that the swinging of the armature block 50 is guided.

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

  Furthermore, 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 portion 810 is the horizontal direction (X direction). It is formed to do.

  When the partition 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 220. By doing so, the insulation distance e between the iron core 800 (drive block 40) and the contact block 60 can be increased (see FIG. 33).

  Further, in the partition 220, the driving block 40 is assembled to the base 200, and the extending direction of the body 810 is set to the horizontal direction (X direction), and the extending direction of the body 810 in the iron core 800 (X direction). A side wall 270 is formed so as to cover the end surface 800a.

  When the side wall 270 is viewed from the outside in the X direction (extending direction of the body portion 810), the end surface 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).

  Further, the side wall 270 has the contact block 60 assembled to the base 200 and the extending direction of the body portion 810 is set in the horizontal direction (X direction), and the movable contact portion 600 and the fixed contact portion 650 in the X direction (body portion). An extending wall 271 is formed to cover the end surfaces 600a and 650a in the extending direction of 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 when the extending wall 271 is viewed from the outside in the X direction (extending direction of the body portion 810).

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

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

  First, the armature block 50 is accommodated in the armature block accommodation 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 received 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.

  A coil terminal insertion hole 201 is formed in the base 200 so as to penetrate from the partition wall 220 to the base portion 210 in the vertical direction.

  Further, the base 200 is formed with a positioning portion 219 for positioning the iron core 800 with respect to the base 200 by inserting the tips 821 and 832 of the leg portions 820 and 830.

  Further, a guide groove 272 for guiding the leg portions 820 and 830 to the positioning portion 219 is formed on 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 portion 930 of the coil terminal 900 is inserted into the coil terminal insertion hole 201 and the leg portions 820 and 830 are guided in the guide groove 272. .

  Then, by introducing the support portions 512 of the armature block 50 into the space portion 70a and inserting the tips 821 and 832 of the leg portions 820 and 830 into the positioning portion 219 while introducing the magnetic pole portion 513 into the space portion 70b, 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, the assembly of the iron core 800 and the coil frame 700 allows the positioning of the coil block 70 with the stroke of the armature block 50 stabilized to the base 200 to be supported by the armature block 50. This is performed on the 512 side and the magnetic pole part 513 side. In this way, it is possible to suppress the occurrence of warping in the coil frame 700 and the base 200, and the stroke and operation of the armature block 50 can be further stabilized.

  Then, the press-fitting piece 631 of the movable contact portion 600 is press-fitted into a 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 in a state where the movable contact 610 is accommodated in the armature block accommodation space 260. At this time, the movable contact portion 600 changes from the free state shown in FIG. 24A to the urging state shown in FIG. 24B when the operating piece 621 of the leaf spring 620 is pressed by the pressing protrusion 521. That is, in the present embodiment, the movable contact portion 600 is assembled to the base 200 in a state where the operating piece 621 of the leaf spring 620 is urged away from the fixed contact 610.

  Then, with the movable contact portion 600 assembled to the base 200, the press-fit piece 681 of the fixed contact portion 650 is press-fitted into the press-fit groove 223 of the base 200, and the press-fit piece 683 is press-fitted into the press-fit groove 214 of the base 200. Thus, the fixed contact portion 650 is assembled to the base 200 with the fixed contact 660 opposed to the movable contact 610 and accommodated in the armature block accommodation space 260 (see FIG. 33).

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

  The assembly order when the drive block 40 and the contact block 60 are assembled to the base 200 needs to be assembled after the active block 50, but the assembly order of 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 (not energized), the armature block 50 is urged away from the partition 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 portion 830 of the iron core 800 (see FIG. 34). At this time, the movement (turning) of the magnetic pole part 513 is restricted by the magnetic pole part side protruding piece (restricting part) 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 part 513 is attracted to the leg part 830. That is, the armature block 50 rotates around the shaft 512a of the support portion 512.

  As the armature block 50 rotates, 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, thereby causing the operating piece 621 to move to the fixed contact portion 650. Move to the side. Thus, the movable contact 610 attached to the operating piece 621 contacts the fixed contact 72.

  On the other hand, when the voltage application to the coil 72 is canceled (energization is canceled), 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 is rotated in the reverse direction. The magnetic pole part 513 is separated from the leg part 830.

(Second Embodiment)
The electromagnetic relay according to the present embodiment basically has the same configuration as that of the electromagnetic relay 1 shown in the first embodiment, except that a 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 in the same manner as 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 carrying out like this, it can suppress that the lower part of the support part 512 floats.

  At this time, the hinge spring 743A is located above and below the support portion 512 in a side view (as viewed from the Y direction) when the extending direction of the arm portion 511 is the horizontal direction and the width direction of the arm portion 511 is the vertical direction. The center of the direction is pressed.

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

(Third embodiment)
The electromagnetic relay according to the present embodiment basically has the same configuration as that of the electromagnetic relay 1 shown in the first embodiment, except that the support portion 511 is connected to one leg portion 820 of the iron core 800 and the base. It differs from the said 1st Embodiment in the point positioned by the positioning part 281 formed in 200. FIG.

  Furthermore, the point which formed in the base 200 the control part 282 which controls the rocking | fluctuation of the magnetic pole part 513 in the direction away from the other leg part 830 of the iron core 800 is also different from the said 1st Embodiment.

  Thus, in this embodiment, since the positioning part and the regulation part are formed on the base 200, as shown in FIG. 44, the coil frame 700 has a support part side protruding piece 743 and a magnetic pole part side protruding piece 744. Not formed.

  Even if the positioning portion 281 and the restricting 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 operational stability can be further improved.

(Fourth embodiment)
The electromagnetic relay according to the present embodiment basically has 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.

  Furthermore, in this 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 molded.

  In this way, by forming at least the coil frame 700 and the iron core 800 integrally by insert molding, it is not necessary to perform an operation of assembling the iron core 800 to the coil frame 700, and it can be easily manufactured. Further, the assembly accuracy can be improved as compared with the case where the iron core 800 is assembled to the coil frame 700.

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

  Therefore, it is not necessary to cover the three surfaces (the upper surface 812, the lower surface 813, and the 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 surfaces of the body 810 of the iron core 800 that are spaced apart from each other.

  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 portion 720 of the coil frame 700.

  As described above, 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, more coils 72 can be wound around the coil block. The magnetic force can be improved without increasing the size of 70.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made.

  For example, the base, contact block, and other detailed specifications (shape, size, layout, etc.) can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Electromagnetic relay 200 Base 220 Bulkhead 230 Contact block accommodation space 234 Bottom wall 40 Drive block 50 Armature block 510 Armature 511 Arm part 512 Support part 513 Magnetic pole part (The width is widened up and down)
513a Magnetic pole surface (opposite the magnetic pole surface formed on the legs of the iron core)
520 Moving body 521 Pressing protrusion 60 Contact block 60a Shortest contact portion 610 Movable contact 660 Fixed contact 70 Coil block 72 Coil 700 Coil frame 800 Iron core 810 Body 820 Leg 830 Leg

Claims (7)

A contact block having a fixed contact portion in which a fixed contact is formed, and a movable contact portion in which a movable contact contacting and separating from the fixed contact is formed;
A drive block for moving the movable contact to be movable toward and away from the fixed contact;
A base on which the contact block and the drive block are assembled;
With
The drive block is
An iron having a trunk portion extending in one direction and legs extending downward from both ends in the extension direction of the trunk portion in a state where the extending direction of the trunk portion is a horizontal direction. The core,
A coil frame to which the iron core is assembled;
A coil wound in a state in which a coil frame is interposed in the body of the iron core;
An armature disposed so as to extend from one leg of the iron core to the other leg, and swinging about one end;
A moving body that moves as the armature swings;
With
The armature is
A support portion that is opposed to one leg of the iron core and serves as the shaft;
A magnetic pole portion facing the other leg portion of the iron core;
An arm part that continuously connects the support part and the magnetic pole part, and swings the magnetic pole part so as to approach and separate from the other leg part of the iron core with the support part as an axis;
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 base is formed with a partition wall that separates and insulates the contact block and the drive block,
The partition wall is formed with a through-hole into which the pressing protrusion is inserted in a size corresponding to the pressing protrusion, and a contact block housing space in which the contact block is housed.
The contact block receiving space is arranged with the bottom surface of the top wall, the top surface of the bottom wall, the side surface of the side wall, and the contact side inner surface of the partition wall, with the through hole of the partition wall positioned below the coil. Defined,
The pressing between the fixed contact and the shortest contact portion with the shortest distance from the fixed contact among the contact portions with the bottom wall of the contact block in a state viewed from the moving direction of the movable contact An electromagnetic relay characterized in that a protrusion is located.   2. The ridge that extends in the moving direction of the movable contact and protrudes upward is formed between the shortest contact portion and the fixed contact in the bottom wall. Electromagnetic relay.   The electromagnetic relay according to claim 1, wherein a concave portion that is recessed in a direction away from the contact block is formed on the side wall.   The step part which is dented toward the said contact side inner surface is formed in the edge part on the opposite side to the said contact side inner surface in the said contact block side of the said side wall, The any one of Claims 1-3 characterized by the above-mentioned. The electromagnetic relay according to item 1.   5. The electromagnetic relay according to claim 1, wherein a distance from the contact block to a lower surface of the top wall is larger than a vertical width of the movable contact. .   6. The electromagnetic relay according to claim 1, wherein a protrusion is formed above the contact block on the contact-side inner surface of the partition wall.   2. A concave portion that is recessed in a direction away from the movable contact is formed at a position corresponding to the movable contact on the contact-side inner surface of the partition wall as viewed from the moving direction of the movable contact. The electromagnetic relay according to any one of?

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