Electromagnetic relay

Abstract

To provide an electromagnetic relay capable of more reliably preventing a contact from being affected by arcing.SOLUTION: An electromagnetic relay 1 includes: a first fixed contact 411; a second fixed contact 411; a coil 210; and an iron core 230 placed in the coil 210. The electromagnetic relay 1 also has a first wall 311 and a second wall 312, and includes a rotating contact element 310. The electromagnetic relay 1 also has a first movable contact 421 and a second movable contact 421, and includes a movable contact 422 that moves between a first position where the first and second movable contacts 421 come into contact with the first and second fixed contacts 411 when the contact element 310 rotates and a second position where the first and second movable contacts 421 separates from the first and second fixed contacts 411. The electromagnetic relay 1 includes a yoke 80 placed behind the movable contact 422.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to electromagnetic relays. [Background technology]

[0002] Conventionally, as disclosed in the following Patent Document 1, an electromagnetic relay has been known that includes a fixed contact portion having a fixed contact, and a movable contact portion having a movable contact that moves relative to the fixed contact and can be brought into contact with and separated from the fixed contact.

[0003] In Patent Document 1, the fixed contact and the movable contact are brought into contact with and separated from each other, thereby making it possible to switch between electrical continuity and non-conduction between the fixed contact portion and the movable contact portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-104277 Summary of the Invention [Problem to be solved by the invention]

[0005] As in the above-described conventional technology, when switching between electrical continuity and non-conduction between the fixed contact portion and the movable contact portion by connecting and disconnecting the fixed contact and the movable contact, it is preferable to be able to prevent the movable contact and the fixed contact from being affected by the arc that occurs when the contacts are opened.

[0006] Therefore, an object of the present disclosure is to provide an electromagnetic relay that can more reliably prevent the contacts from being affected by arcs. [Means for solving the problem]

[0007] The electromagnetic relay according to the present disclosure comprises a movable contactor having a first fixed contact, a second fixed contact located to the left of the first fixed contact, a coil, an iron core disposed within the coil, a first wall portion disposed above the iron core, and a second wall portion extending downward from the first wall portion, the movable contactor having a rotating armature, a first movable contact, and a second movable contact located to the left of the first movable contact, the movable contactor being disposed rearward of the first and second fixed contacts and moving, with rotation of the armature, between a first position where the first movable contact is in contact with the first fixed contact and the second movable contact is in contact with the second fixed contact, and a second position where the first movable contact is separated from the first fixed contact and the second movable contact is separated from the second fixed contact; and a yoke disposed rearward of the movable contactor. [Effects of the Invention]

[0008] According to the present disclosure, an electromagnetic relay can be obtained that can more reliably prevent the contacts from being affected by arcs. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of an electromagnetic relay according to a first embodiment, viewed from a first obliquely upward direction. [Figure 2] 2 is a perspective view of the electromagnetic relay according to the first embodiment, seen from a second obliquely upward direction. FIG. [Figure 3] 1 is a diagram showing an electromagnetic relay according to a first embodiment, and is an exploded perspective view seen from a first obliquely upward direction with a cover removed. FIG. [Figure 4] FIG. 2 is a diagram showing the electromagnetic relay according to the first embodiment, and is an exploded perspective view seen from a second obliquely upward direction with the cover removed. [Figure 5] FIG. 2 is a plan view showing members other than the cover of the electromagnetic relay according to the first embodiment. [Figure 6] 2 is an exploded perspective view of the members other than the cover of the electromagnetic relay according to the first embodiment, as viewed from a first obliquely upward direction. FIG. [Figure 7]3 is an exploded perspective view of the members other than the cover of the electromagnetic relay according to the first embodiment, as viewed from a second obliquely upward direction. FIG. [Figure 8] 1 is an exploded perspective view of an electromagnetic device provided in an electromagnetic relay according to a first embodiment, viewed obliquely from above. [Figure 9] 1 is an exploded perspective view of a moving member, a moving portion, and a main moving contact portion provided in an electromagnetic relay according to a first embodiment, viewed obliquely from above. [Figure 10] 3 is an exploded perspective view of a moving member, a moving portion, and a main moving contact portion provided in the electromagnetic relay according to the first embodiment, as viewed from a second obliquely upward direction. FIG. [Figure 11] 1 is an exploded perspective view of an auxiliary contact portion provided in an electromagnetic relay according to a first embodiment, viewed obliquely from above. FIG. [Figure 12] FIG. 2 is a perspective view showing contact and separation of the main contact portion and the auxiliary contact portion according to the first embodiment, showing a state in which the main contact portion and the auxiliary contact portion are in a second position. [Figure 13] FIG. 2 is a perspective view showing contact and separation of the main contact portion and the auxiliary contact portion according to the first embodiment, showing a state in which the main contact portion and the auxiliary contact portion are in a first position. [Figure 14] FIG. 4 is a vertical cross-sectional view showing the contact and separation of the main contact portion and the auxiliary contact portion according to the first embodiment, in a state where the main contact portion and the auxiliary contact portion are in a second position. [Figure 15] FIG. 2 is a vertical cross-sectional view showing contact and separation of the main contact portion and the auxiliary contact portion according to the first embodiment, showing a state in which the main contact portion and the auxiliary contact portion are in a first position. [Figure 16] FIG. 2 is a perspective view showing the inside of the cover according to the first embodiment. [Figure 17] FIG. 4 is a rear view showing the cover according to the first embodiment. [Figure 18] 2 is a perspective view of the main fixed contact portion according to the first embodiment, viewed from a first obliquely upward direction. FIG. [Figure 19] 4 is a perspective view of the main fixed contact portion according to the first embodiment, viewed from a second obliquely upward direction. FIG. [Figure 20] FIG. 2 is a front view showing a main fixed contact portion according to the first embodiment. [Figure 21] FIG. 3 is a rear view showing the main fixed contact portion according to the first embodiment. [Figure 22] FIG. 2 is a side view showing a main fixed contact portion according to the first embodiment. [Figure 23] FIG. 2 is a plan view showing a main fixed contact portion according to the first embodiment. [Figure 24] 1 is a perspective view of a main contact portion according to a first embodiment, viewed from a first obliquely upward direction. FIG. [Figure 25] FIG. 2 is a side view showing the main contact portion according to the first embodiment. [Figure 26] 3 is a perspective view of the movable contactor according to the first embodiment before the yoke is attached, as seen from a first obliquely upward direction. FIG. [Figure 27] 4 is a perspective view of the movable contactor according to the first embodiment before the yoke is attached, as seen from a second obliquely upward direction. FIG. [Figure 28] 1 is a side view showing a state before a yoke is attached to a movable contactor according to a first embodiment. [Figure 29] 1 is a plan view showing a state in which a yoke is attached to a movable contactor according to a first embodiment. [Figure 30] FIG. 3 is a rear view showing a state in which a yoke is attached to the movable contactor according to the first embodiment. [Figure 31] 1 is a front view showing a state in which a yoke is attached to a movable contactor according to a first embodiment. [Figure 32] FIG. 2 is a rear view showing a state in which a yoke is attached to the movable contactor according to the first embodiment. [Figure 33] 1 is a side view showing a state in which a yoke is attached to the movable contactor according to the first embodiment. [Figure 34] 3A and 3B are diagrams illustrating specific regions provided on the arrangement surface of the movable contactor according to the first embodiment. [Figure 35] 3A and 3B are diagrams illustrating magnetic fluxes generated when a current flows in one direction through the movable contactor according to the first embodiment. [Figure 36]5A and 5B are diagrams illustrating magnetic fluxes generated when a current flows in another direction through the movable contactor according to the first embodiment. [Figure 37] 1 is a plan view showing a fixed contact portion, a movable contactor, and a yoke according to a first embodiment, in a state where the contact is in a first position. FIG. [Figure 38] FIG. 2 is a plan view showing the fixed contact portion, the movable contactor, and the yoke according to the first embodiment, in a state where the contact is in a second position. [Figure 39] 5A and 5B are diagrams illustrating how an arc moves toward a protruding portion in the electromagnetic relay according to the first embodiment. [Figure 40] 10A and 10B are diagrams illustrating how an arc moves toward a protruding portion in an electromagnetic relay according to a first modified example. [Figure 41] FIG. 10 is a perspective view of a movable contactor according to a second modified example, seen from a first obliquely upward direction, before a yoke is attached to the movable contactor. [Figure 42] 10 is a perspective view of a movable contactor according to a second modified example before a yoke is attached to the movable contactor, as viewed from a second obliquely upward direction. FIG. [Figure 43] FIG. 10 is a side view showing a state before a yoke is attached to a movable contactor according to a second modified example. [Figure 44] FIG. 10 is a rear view showing a state in which a yoke is attached to the movable contactor according to the second modified example. [Figure 45] FIG. 10 is a front view showing a state in which a yoke is attached to a movable contactor according to a second modified example. [Figure 46] FIG. 10 is a rear view showing a state in which a yoke is attached to the movable contactor according to the second modified example. [Figure 47] FIG. 10 is a side view showing a state in which a yoke is attached to a movable contactor according to a second modified example. [Figure 48] FIG. 10 is a perspective view of a state in which a yoke is attached to a movable contactor according to a second modified example, as viewed obliquely from below. [Figure 49] FIG. 10 is a side view showing a main contact portion according to a second modified example. [Figure 50]FIG. 11 is a perspective view of a movable contactor according to a third modified example, seen from a first obliquely upward direction, before a yoke is attached to the movable contactor. [Figure 51] FIG. 11 is a perspective view of a movable contactor according to a third modified example, seen from a second obliquely upward direction, before a yoke is attached to the movable contactor. [Figure 52] FIG. 11 is a side view showing a state before a yoke is attached to a movable contactor according to a third modified example. [Figure 53] FIG. 11 is a rear view showing a state in which a yoke is attached to the movable contactor according to the third modified example. [Figure 54] FIG. 11 is a front view showing a state in which a yoke is attached to a movable contactor according to a third modified example. [Figure 55] FIG. 11 is a rear view showing a state in which a yoke is attached to the movable contactor according to the third modified example. [Figure 56] FIG. 11 is a side view showing a state in which a yoke is attached to a movable contactor according to a third modified example. [Figure 57] FIG. 10 is a side view showing a main contact portion according to a third modified example. [Figure 58] FIG. 10 is a diagram showing an electromagnetic relay according to a second embodiment, and is an exploded perspective view seen from a second obliquely upward direction with the cover removed. [Figure 59] FIG. 5 is a cross-sectional view showing a partly cutaway electromagnetic relay according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that, hereinafter, the vertical axis, front-rear axis, and width axis of the electromagnetic relay 1 are defined with the pull-out terminal 414 pulled out from the housing 10 below the vertical axis. These vertical axis, front-rear axis, and width axis are defined merely for the sake of convenience in explaining each configuration, and do not define the actual arrangement of the electromagnetic relay 1. Furthermore, the vertical axis, front-rear axis, and width axis are imaginary configurations, and do not mean that the electromagnetic relay 1 actually has an axis portion such as a vertical axis.

[0011] The direction in which the main fixed contact and the main movable contact face each other will be referred to as the X-axis (first axis: front-rear axis).

[0012] In the first embodiment, the direction in which a pair of main fixed contacts (a pair of fixed contacts) are arranged side by side will be described as the Y axis (second axis: width axis: longitudinal direction of the movable contactor). An axis intersecting the X axis and the Y axis will be described as the Z axis (third axis). In the second embodiment, the vertical axis will be described as the Z axis (second axis), and an axis intersecting the X axis and the Z axis will be described as the Y axis (third axis).

[0013] In this embodiment, the axis extending along the Z axis in the three-dimensional Cartesian coordinate system is the up-down axis, the axis extending along the X axis is the front-rear axis, and the axis extending along the Y axis is the width axis. That is, the axis perpendicular to the front-rear axis (direction extending along the X axis) is the width axis (direction extending along the Y axis), and the axis perpendicular to the front-rear axis (direction extending along the X axis) and the width axis (direction extending along the Y axis) is the up-down axis (direction extending along the Z axis).

[0014] In addition, the description will be given by defining the lower side of the vertical axis as the first end side of the Z axis, and the upper side as the second end side of the Z axis. Furthermore, the description will be given by defining the side where the main fixed contact (fixed contact) is located as the front on the longitudinal axis, and the side where the main movable contact (movable contact) is located as the rear on the longitudinal axis.

[0015] Furthermore, the following multiple embodiments and their modified examples include similar components, and therefore, in the following, the same reference numerals will be used to denote the similar components, and redundant explanations will be omitted.

[0016] (First embodiment) As shown in Figures 1 and 2, the electromagnetic relay 1 according to this embodiment includes a housing 10 formed from a resin material in the shape of a hollow box. In this embodiment, the housing 10 has a base 110 and a case 120 that covers the base 110, and has an outer surface that is substantially rectangular parallelepiped in shape. Furthermore, when the case 120 is attached to the base 110, an internal space S1 is formed within the housing 10. Note that the shape of the outer surface of the housing 10 is not limited to a rectangular parallelepiped shape and may be any shape.

[0017] An electromagnet device (drive unit) 20 is disposed behind the front-rear axis (X axis: first axis) in the internal space S1 of the housing 10, and a main contact unit 40 is disposed in front of the front-rear axis (X axis: first axis). Furthermore, an auxiliary contact unit 60 is disposed behind the front-rear axis (X axis: first axis) in the internal space S1 of the housing 10 and above (on the second end side) the up-down axis (Z axis: third axis).

[0018] In this embodiment, the main contact unit 40 is a so-called normally open contact unit that is initially in the off state, and the auxiliary contact unit 60 is a so-called normally closed contact unit that is initially in the on state. It is also possible to configure the main contact unit 40 as a so-called normally closed contact unit that is initially in the on state, and the auxiliary contact unit 60 as a so-called normally open contact unit that is initially in the off state.

[0019] The base 110 comprises a substantially rectangular plate-shaped base portion 111 extending along a substantially horizontal plane (a plane intersecting the Z axis: the XY plane), and a peripheral wall 112 connected to the periphery of the base portion 111 and extending along the vertical axis (the Z axis: the third axis) (see Figures 3 to 7).

[0020] A step is formed on the periphery of the opening at the upper end of the peripheral wall 112, and the outer periphery is smaller than that at the lower end. A pair of protrusions 112a are arranged side by side along the width axis (extending left and right) on each of the front and rear surfaces of the peripheral wall 112 above the step.

[0021] On the other hand, the case 120 has a generally box-like shape that opens downward, and this case 120 is attached to the base 110 from above.

[0022] The case 120 includes a top wall 121 in the shape of a substantially rectangular plate extending along a substantially horizontal plane (a plane intersecting the Z axis: the XY plane), and a peripheral wall 122 extending from the periphery of the top wall 121 downward (first end) along the vertical axis (the Z axis: the third axis) (see Figures 3 to 5).

[0023] The peripheral wall 122 includes a front wall 1221 located in front of the front-rear axis (X axis: first axis) and extending along the width axis (Y axis: second axis) and the up-down axis (Z axis: third axis). The peripheral wall 122 also includes a rear wall 1222 located behind the front-rear axis (X axis: first axis) and extending along the width axis (Y axis: second axis) and the up-down axis (Z axis: third axis). The peripheral wall 122 also includes a pair of side walls 1223 connected to the front wall 1221 and the rear wall 1222 on both sides of the width axis (Y axis: second axis) and extending along the front-rear axis (X axis: first axis) and the up-down axis (Z axis: third axis).

[0024] At the bottom of each of the front wall 1221 and the rear wall 1222, a pair of insertion holes 122a are arranged side by side along the width axis (the direction extending left and right) into which the protrusions 112a of the base 110 are inserted when attaching the case 120 to the base 110.

[0025] In this embodiment, the base 110 includes a first side wall 131 that is connected to and rises upward from the bottom surface 111a of the base portion 111 and extends along the width axis (Y axis: second axis). The base 110 also includes a pair of second side walls 132 that are connected to both ends of the width axis (Y axis: second axis) of the first side wall 131 toward the rear of the front-rear axis (X axis: first axis). The pair of second side walls 132 also extend to and rise upward from the bottom surface 111a of the base portion 111. The first side wall 131 and the pair of second side walls 132 that extend to and rise upward from the bottom surface 111a of the base portion 111 hold the yoke 240 of the electromagnetic device 20 and surround three sides (at least a portion) of the side surface 210a of the coil 210.

[0026] In this manner, in this embodiment, the electromagnet device 20 is arranged behind the first side wall 131. The main contact portion 40 is arranged in front of the first side wall 131 (see FIGS. 2 to 4). That is, in this embodiment, the electromagnet device 20 and the main contact portion 40 are arranged in the internal space S1, partitioned into front and rear portions by the first side wall 131.

[0027] Further, a protruding wall 113 is formed in front of the first side wall 131 of the base 110, and this protruding wall 113 ensures a creeping distance between a pair of main fixed contact portions 410, 410, which will be described later.

[0028] Furthermore, the base 110 is formed with a padding member 114 for providing a gap between the base 110 and a printed circuit board (not shown) when the electromagnetic relay 1 is mounted on the printed circuit board.

[0029] The electromagnet device (drive unit) 20 is a device that generates electromagnetic force, and includes a coil 210 that generates magnetic flux when current is applied, and a hollow cylindrical coil bobbin 220 around which the coil 210 is wound (see FIG. 8).

[0030] For example, a conductive wire can be used as the coil 210. In this embodiment, the coil 210 is disposed in the internal space S1 of the housing 10 with the base 110 positioned below the case 120, so that the axial direction of the coil 210 extends along the vertical axis (Z axis: third axis).

[0031] Coil bobbin 220 is made of resin, which is an insulating material, and has a cylindrical tubular portion 221 extending along the vertical axis (Z axis: third axis: axial direction of the coil) formed in the center of coil bobbin 220. A through-hole 2211 is formed inside tubular portion 221, penetrating vertically.

[0032] The coil bobbin 220 is connected to the upper end of the cylindrical portion 221 around whose outer surface the coil 210 is wound, and is provided with a generally rectangular upper flange portion (upper collar portion) 222 that protrudes radially outward from the cylindrical portion 221. The coil bobbin 220 is connected to the lower end of the cylindrical portion 221, and is provided with a generally rectangular lower flange portion (lower collar portion) 223 that protrudes radially outward from the cylindrical portion 221.

[0033] Furthermore, in this embodiment, the upper flange portion 222 is formed with upper auxiliary contact holders 2221 that hold the auxiliary contact portion 60. The upper auxiliary contact holders 2221 are formed at both ends of the width axis (Y axis: second axis) at the rear end of the front-rear axis (X axis: first axis) of the upper flange portion 222. Each upper auxiliary contact holder 2221 is formed with press-fit openings 2221a that open outward on the width axis (Y axis: second axis) and into which press-fit pieces 6141a, 6241a (described later) of the auxiliary contact portion 60 are press-fitted (see FIGS. 6 to 8). Restriction walls 2221b that restrict the press-fit pieces 6141a, 6241a from coming off or rotating are formed around the press-fit openings 2221a in the upper auxiliary contact holders 2221 (see FIGS. 6 to 8).

[0034] Meanwhile, the lower flange portion 223 is formed with lower auxiliary contact holders 2231 that hold the auxiliary contact portion 60. In this embodiment, the lower flange portion 223 is formed so that the rear end side of the front-rear axis (X axis: first axis) is wider than the front end side, and the lower auxiliary contact holders 2231 are formed on both ends of the width axis (Y axis: second axis) on the front end side of this wider portion. Each lower auxiliary contact holder 2231 is formed with press-fit openings 2231a that open outward on the width axis (Y axis: second axis) and into which press-fit pieces 6143a, 6243a (described later) of the auxiliary contact portion 60 are press-fitted (see FIGS. 6 to 8). Furthermore, around the press-fit openings 2231a in the lower auxiliary contact holders 2231, restricting walls 2231b are formed to restrict the press-fit pieces 6143a, 6243a from coming off or rotating (see FIGS. 6 to 8).

[0035] The electromagnetic device 20 also includes an iron core 230 that is inserted into a through-hole 2211 formed in the cylindrical portion 221 of the coil bobbin 220 and is magnetized (through which magnetic flux passes) by the energized coil 210. The iron core 230 is disposed inside the coil 210.

[0036] The iron core 230 includes a substantially cylindrical shaft portion 231 extending along the vertical axis (Z axis: third axis), and a substantially cylindrical head portion 232 formed with a larger diameter than the shaft portion 231 and connected to the upper end of the shaft portion 231 (see FIG. 8).

[0037] The electromagnet device 20 also includes a yoke 240 that is arranged around the coil 210 wound around the cylindrical portion 221. In this embodiment, the yoke 240 is a substantially plate-shaped member made of a magnetic material and has a substantially L-shape in side view (as viewed along the Y-axis). That is, the yoke 240 includes a vertical wall portion (standing portion) 241 that is arranged to extend along a substantially vertical plane in front of the coil 210 wound around the cylindrical portion 221, and a horizontal wall portion 242 that extends rearward from the lower end of the vertical wall portion 241 (see FIG. 8). Such a yoke 240 can be formed, for example, by bending a single plate.

[0038] As described above, the yoke 240 is supported by the first side wall 131 and a pair of second side walls 132 that extend upward from the bottom surface 111a of the base portion 111 (see FIGS. 3 and 4). A pair of protruding portions (extensions) 2411 that protrude upward are formed on both ends of the width axis (Y-axis: second axis) of the vertical wall portion (standing portion) 241 of the yoke 240, and the armature 310 is arranged between the pair of protruding portions (extensions) 2411.

[0039] Furthermore, the electromagnetic device 20 includes a pair of coil terminals 250 to which both ends of the coil 210 are connected, respectively, and the electromagnetic device 20 is driven by passing current through the coil 210 via the pair of coil terminals 250. In this embodiment, the coil terminal 250 is fixed to the coil bobbin 220 with its tip (connecting piece) 251 protruding downward (outward: toward the first end) from the housing 10 along the vertical axis (Z-axis: third axis). Specifically, the coil terminals 250 are held in a pair of coil terminal holding grooves 223a formed in a pair of extension portions 2232, respectively (see FIG. 8).

[0040] The driving state of the electromagnet device 20 is switched to move the moving member 30.

[0041] In this embodiment, the moving member 30 includes an armature 310 arranged to face the head 232 of the iron core 230 along the vertical axis (Z axis: third axis), and a hinge spring 320 attached across the armature 310 and the yoke 240.

[0042] The armature 310 is made of a conductive metal and is arranged so that it can swing along a vertical axis (Z axis: third axis) relative to the head 232 of the iron core 230 depending on whether the coil 210 is excited or de-excited.

[0043] In this embodiment, the armature 310 includes a horizontal wall portion 311 that faces the head 232 of the iron core 230 along the vertical axis (Z axis: third axis), and a vertical wall portion 312 that extends downward from the front end of the horizontal wall portion 311 along the front-rear axis (X axis: first axis) (see FIGS. 9 and 10).

[0044] The horizontal wall portion 311 of the armature 310 is attached to the upper end of the vertical wall portion 241 so as to be able to swing along the vertical axis (Z axis: third axis), and the armature 310 is able to rotate along the vertical axis (Z axis: third axis) around the part supported by the yoke 240.

[0045] Specifically, notches 3111 are formed at both ends of the width axis (Y axis: second axis) at the front end of the front-rear axis (X axis: first axis) of the horizontal wall portion 311. The armature 310 is supported by the yoke 240 by inserting the protruding portion (extension portion) 2411 of the yoke 240 into the notches 3111. In this manner, in this embodiment, the notches 3111 are the portions of the armature 310 that are supported by the yoke 240.

[0046] Furthermore, in this embodiment, a through-hole 313 that penetrates vertically is formed at the front end of the front-rear axis (X-axis: first axis) of the armature 310. A hinge spring 320 is inserted into this through-hole 313 and attached across the armature 310 and the yoke 240. At this time, the armature 310 is biased by the hinge spring 320 in a direction in which the horizontal wall portion 311 moves away from the head 232 of the iron core 230.

[0047] When current is applied to the coil 210, the armature 310 is rotated so that the horizontal wall portion 311 approaches the head 232 of the iron core 230. Specifically, when current is applied to the coil 210, the horizontal wall portion 311 of the armature 310 is attracted to the head 232 of the iron core 230, causing the armature 310 to rotate so that the horizontal wall portion 311 approaches the head 232 of the iron core 230. In other words, when current is applied to the coil 210 via the pair of coil terminals 250, the horizontal wall portion 311 of the armature 310 rotates downward about the up-down axis (Z-axis: third axis). At this time, the vertical wall portion 312 connected to the horizontal wall portion 311 rotates forward about the front-rear axis (X-axis: first axis).

[0048] The swing range of this armature 310 is set between the position where the horizontal wall portion 311 is farthest from the head portion 232 of the iron core 230 and the position where the horizontal wall portion 311 is closest to the head portion 232 of the iron core 230 .

[0049] In this embodiment, the swing range of the armature 310 is set between an initial position where the horizontal wall portion 311 is spaced a predetermined distance above the head 232 of the iron core 230, and an abutment position where the horizontal wall portion 311 abuts against the head 232 of the iron core 230.

[0050] Therefore, in this embodiment, when current is applied to the coil 210, the armature 310 moves to a contact position where the horizontal wall portion 311 contacts the head portion 232 of the iron core 230, and when current is stopped from being applied to the coil 210, the armature 310 returns to its initial position due to the biasing force of the hinge spring 320.

[0051] In this way, the armature 310 according to this embodiment is disposed opposite the head 232 of the iron core 230 across a predetermined gap when the coil 210 is not energized, and swings so as to be attracted to the head 232 of the iron core 230 when the coil 210 is energized.

[0052] By switching the drive state of the electromagnet device 20 and swinging the armature 310, it is possible to switch between electrical continuity and non-conduction between the main fixed contact portion (fixed contact portion) 410 and the main movable contact portion (movable contact portion) 420, which are paired with each other (and have main contacts that move toward and away from each other).

[0053] In this embodiment, a main contact portion 40 that opens and closes the main contact in response to the energization of the coil 210 is provided in front of the electromagnet device 20 .

[0054] The main contact portion 40 includes a main fixed contact portion 410 and a main movable contact portion 420. The main fixed contact portion 410 includes a main fixed contact (fixed contact: first contact) 411 and a main body portion (first body portion) 412 having the main fixed contact 411. On the other hand, the main movable contact portion 420 faces the main fixed contact 411 along the first axis and includes a main movable contact (movable contact: second contact) 421 that moves relative to the main fixed contact 411 and can come into contact with or separate from the main fixed contact 411. The main movable contact portion 420 also includes a movable contactor (second body portion) 422 that has the main movable contact 421.

[0055] In this embodiment, the main contact portion 40 includes only one pair of a main fixed contact portion 410 and a main movable contact portion 420 (see FIGS. 6 and 7), which are paired with each other (have main contacts that come into contact with and separate from each other).

[0056] In this embodiment, a set of a main fixed contact portion 410 and a main movable contact portion 420 having main contacts that come into contact with or separate from each other is made up of a pair of main fixed contact portions 410 and one main movable contact portion 420.

[0057] Specifically, two main fixed contact parts 410 shaped symmetrically with respect to the XZ plane are used as a pair of main fixed contact parts 410. The two paired main fixed contact parts 410 are fixed to the base 110 (housing 10) in a state where they are spaced apart from each other along the width axis (Y axis: second axis).

[0058] In this embodiment, each main fixed contact portion 410 includes a body portion 412 having one main fixed contact 411 (see FIGS. 6 and 7). The two paired main fixed contact portions 410 are fixed to the base 110 (housing 10), so that the pair of main fixed contacts 411 are arranged side by side along the width axis (Y axis: second axis).

[0059] As described above, in this embodiment, main fixed contact (fixed contact: first contact) 411 has first fixed contact 411A and second fixed contact 411B. Furthermore, main body (first main body) 412 has first fixed contact side terminal 412A having first fixed contact 411A and second fixed contact side terminal 412B having second fixed contact 411B.

[0060] In this embodiment, for convenience, the main body (first main body) 412 located on the right side of Fig. 6 is set as the first fixed contact side terminal 412A having the first fixed contact 411A. In other words, the first fixed contact side terminal 412A having the first fixed contact 411A can also be the main body (first main body) 412 located on the left side of Fig. 6.

[0061] In this embodiment, a member (first contact member 4111) to be the main fixed contact is inserted into an insertion hole 412a formed in the main body 412 so as to penetrate the body in the thickness direction, and the main body 412 is riveted to have the main fixed contact 411 (see FIGS. 14 and 15). Thus, in this embodiment, the main body 412 functions as a fixed-side main contact holder that holds the main fixed contact 411.

[0062] Note that the main fixed contact 411 does not have to be formed on the main body 412 by riveting, and can be formed by various methods. For example, it is possible to dowel the main body 412 to make a protruding portion function as the main fixed contact. Also, by configuring the main movable contact 421 to come into contact with part of the flat surface of the main body 412, it is possible to make part of the flat surface of the main body 412 function as the main fixed contact.

[0063] The main fixed contact portion 410 is provided with a lead-out terminal 414 that is drawn out below (to the outside of) the base 110 (housing 10) when the main fixed contact portion 410 is fixed to the base 110 (housing 10). The main fixed contact portion 410 is further provided with a terminal connection portion 413 that is connected to the lead-out terminal 414 below (on the first end side of) the vertical axis with respect to the main fixed contact 411. The main fixed contact portion 410 is fixed to the base 110 (housing 10) with the tip (connection portion) of the lead-out terminal 414 protruding below (outside) the base 110 (housing 10).

[0064] In this embodiment, the base 110 is formed with an insertion hole 115 that penetrates vertically. The tip (connection portion: lower end) of the lead-out terminal 414 is inserted into this insertion hole 115 from above. The base 110 is also formed with an inner press-fit groove 116 and an outer press-fit groove 117, and the main fixed contact portion 410 is press-fit into the inner press-fit groove 116 and the outer press-fit groove 117. This allows the main fixed contact portion 410 to be fixed to the base 110 (housing 10) with the tip (connection portion: lower end) of the lead-out terminal 414 protruding downward (outward) from the base 110 (see FIGS. 14 and 15 ). The main fixed contact portion 410 may also be fixed to the base 110 (housing 10) with an adhesive or the like.

[0065] At this time, the main fixed contact portion 410 is fixed to the base 110 (housing 10) with the main fixed contact 411 facing rearward along the front-rear axis (X-axis: first axis). That is, the main fixed contact portion 410 is fixed to the base 110 (housing 10) with the surface 410a (front surface: opposing surface: surface opposing the main movable contact portion 420) of the main body portion 412 on which the main fixed contact 411 is formed facing rearward.

[0066] The main fixed contact 411, the main body 412, the terminal connection part 413 and the lead-out terminal 414 can be made of a conductive material such as a silver-based material or a copper-based material.

[0067] As described above, in this embodiment, the two main fixed contacts 411 are arranged side by side along the Y axis, which is a direction perpendicular to (intersecting with) the direction in which the main fixed contact 411 and the main movable contact 421 move relative to each other. One of the two main bodies 412 (first fixed contact side terminal 412A) has one main fixed contact (first fixed contact 411A) 411. The other main body (second fixed contact side terminal 412B) has the other main fixed contact (second fixed contact 411B) 411.

[0068] On the other hand, one main movable contact portion 420 has one movable contactor (second main body portion) 422, and this one movable contactor 422 has a pair of main movable contacts (second contacts) 421 arranged side by side on the width axis (Y axis: second axis) (see Figures 9 and 10).

[0069] As described above, in this embodiment, the second main body portion is the movable contactor 422, and the main movable contact (second contact) 421 provided on this movable contactor 422 has a first movable contact 421A and a second movable contact 421B arranged side by side along the second axis. That is, the main movable contact (second contact) 421 has a first movable contact 421A that comes into contact with and separates from the first fixed contact 411A, and a second movable contact 421B that comes into contact with and separates from the second fixed contact 411B.

[0070] In this embodiment, a member to be a main movable contact (second contact member 4211) is inserted into insertion holes 422a formed on both longitudinal sides of the approximately rectangular plate-shaped movable contactor 422 in the plate thickness direction, and riveted. In this way, the movable contactor 422 has a main movable contact 421 (see FIGS. 14 and 15). In this way, in this embodiment, the movable contactor 422 functions as a movable-side main contact holder that holds the main movable contact 421.

[0071] The main moving contact 421 does not have to be formed on the moving contactor 422 by riveting, and can be formed by various methods. For example, it is possible to make a protruding portion of the moving contactor 422 function as the main moving contact by performing dowel processing on the moving contactor 422. Also, by configuring the moving contactor 422 so that a part of the flat surface thereof comes into contact with the main fixed contact 411, it is possible to make a part of the flat surface of the moving contactor 422 function as the main moving contact.

[0072] Each main movable contact portion 420 is disposed so as to be located rearward of its paired two main fixed contact portions 410 along the front-rear axis (X-axis: first axis), with its thickness direction substantially aligned with the front-rear axis (X-axis: first axis) and its longitudinal direction substantially aligned with the width axis (Y-axis: second axis). The main movable contact portion 420 is disposed so that its main movable contact 421 faces the main fixed contact 411 along the front-rear axis (X-axis: first axis). Specifically, the movable contactor 422 is disposed so that the main movable contact 421 formed on a first end side of the width axis (Y-axis: second axis) faces the main fixed contact 411 of the main fixed contact portion 410 disposed on the first end side of the width axis (Y-axis: second axis) along the front-rear axis (X-axis: first axis). Similarly, the movable contactor 422 is arranged so that the main movable contact 421 formed on the second end side of the width axis (Y axis: second axis) faces the main fixed contact 411 of the main fixed contact portion 410 arranged on the second end side of the width axis (Y axis: second axis) along the front-to-rear axis (X axis: first axis).

[0073] In this way, one main movable contact (first movable contact 421A) 421 comes into contact with and separates from one of the two main fixed contacts 411 (first fixed contact 411A) 411. The other main movable contact (second movable contact 421B) 421 comes into contact with and separates from the other main fixed contact (second fixed contact 411B) 411. Also, one movable contactor 422 has two main movable contacts 421.

[0074] In this embodiment, for convenience, the main movable contact (first movable contact 421A) 421 located on the left side of Fig. 7 is the first movable contact 421A that comes into contact with and separates from the first fixed contact 411A. In other words, the first movable contact 421A that comes into contact with and separates from the first fixed contact 411A can also be the main movable contact (second contact) 421 located on the right side of Fig. 7.

[0075] The main movable contact 421 and the movable contactor 422 can also be made of a conductive material such as a silver-based material or a copper-based material.

[0076] A set consisting of a pair of main fixed contact portions 410 and one main movable contact portion 420 configured in this manner is housed in the internal space S1, forward of the first side wall 131 in the front-to-rear axis (X axis: first axis) (see Figures 12 to 15).

[0077] Here, the main movable contact portion 420 is arranged so as to be able to swing relatively to the pair of main fixed contact portions 410 along the front-rear axis (X axis: first axis).

[0078] In this embodiment, the main contact portion 40 is connected to the armature 310 via the movable portion 50. The movable portion 50 is caused to swing along the front-rear axis (X-axis: first axis) in conjunction with the swing of the armature 310, so that the main movable contact portion 420 swings along the front-rear axis (X-axis: first axis) in conjunction with the movement of the movable portion 50. In other words, by holding the main movable contact portion 420 on the movable portion 50, the main movable contact portion 420 swings relative to the pair of main fixed contact portions 410 along the front-rear axis (X-axis: first axis).

[0079] In this embodiment, the movable part 50 is made of an insulating resin material and includes a holder part 51 having an insertion hole 511 formed at the top thereof, into which the vertical wall part 312 of the armature 310 is inserted and held. The movable part 50 also includes a movable plate 52 connected to the bottom of the holder part 51, and a movable spring (connecting member) 53 that connects the movable plate 52 and the movable contactor 422.

[0080] In this embodiment, a through-hole 521 that penetrates in the plate thickness direction is formed above the vertical axis (Z-axis: third axis) of the movable plate 52. Then, with the upper end of the movable plate 52 inserted into an insertion hole (not shown) formed in the lower end of the holder part 51, a protrusion formed in the insertion hole (not shown) of the holder part 51 is inserted into the through-hole 521, so that the movable plate 52 is held by the holder part 51.

[0081] Furthermore, a protrusion 522 that protrudes rearward is formed in the center of the vertical axis (Z axis: third axis) of the movable plate 52, and an upper through-hole 531 that penetrates in the plate thickness direction is formed at the top of the vertical axis (Z axis: third axis) of the movable spring 53. Then, by inserting the protrusion 522 of the movable plate 52 into the upper through-hole 531 of the movable spring 53, the movable spring 53 is held by the movable plate 52.

[0082] Furthermore, a lower through-hole 532 penetrating in the plate thickness direction is formed below the vertical axis (Z axis: third axis) of the movable spring 53, and a protrusion 422b protruding rearward is formed in the center of the width axis (Y axis: second axis) of the movable contactor 422. Notches 422c are formed on both sides of the vertical axis (Z axis: third axis) in the center of the width axis (Y axis: second axis) of the movable contactor 422. The protrusion 422b of the movable contactor 422 is inserted into the lower through-hole 532 of the movable spring 53, so that the movable contactor 422 is held by the movable spring 53.

[0083] In this way, the main contact portion 40 is connected to the armature 310 via the movable portion 50 .

[0084] With this configuration, the main movable contact portion 420 swings along the front-rear axis (X-axis: first axis) relative to the pair of main fixed contact portions 410 in accordance with the swing of the armature 310. Therefore, the main movable contact 421 swings in a circular arc centered on the upper end of the vertical wall portion 312.

[0085] Furthermore, in this embodiment, an auxiliary contact unit 60 is arranged in the internal space S1 of the housing 10 separately from the main contact unit 40. This auxiliary contact unit 60 is arranged in the internal space S1 such that the auxiliary contacts (auxiliary fixed contact 611 and auxiliary movable contact 621) are located rearward of the front-rear axis (X-axis: first axis) and at a position on the upper end side of the coil 210. Specifically, the auxiliary fixed contact 611 and the auxiliary movable contact 621 of the auxiliary contact unit 60 are arranged on the second end side (rearward) of the front-rear axis (X-axis: first axis) relative to the axis of the coil 210, and are arranged on the upper end side (second end side) of the coil 210 in the axial direction with the coil 210 arranged such that the axial direction extends along the up-down axis (Z-axis: third axis) and the tip (connecting piece) 251 of the coil terminal 250 is located below the coil 210 (first end side).

[0086] The auxiliary contact portion 60 includes an auxiliary fixed contact portion 610 and an auxiliary movable contact portion 620. The auxiliary fixed contact portion 610 includes an auxiliary fixed contact 611 and a first auxiliary contact terminal 612 having the auxiliary fixed contact 611. On the other hand, the auxiliary movable contact portion 620 includes an auxiliary movable contact 621 that moves relative to the auxiliary fixed contact 611 and can come into contact with or separate from the auxiliary fixed contact 611, and a second auxiliary contact terminal 622 that has the auxiliary movable contact 621.

[0087] In this embodiment, the auxiliary contact portion 60 includes only one pair of an auxiliary fixed contact portion 610 and an auxiliary movable contact portion 620 (see FIGS. 6 and 7), which are paired with each other (have auxiliary contacts that come into contact with and separate from each other).

[0088] In this embodiment, a set of an auxiliary fixed contact portion 610 and an auxiliary movable contact portion 620 having auxiliary contacts that come into contact with and separate from each other is made up of one auxiliary fixed contact portion 610 and one auxiliary movable contact portion 620. One auxiliary fixed contact portion 610 is formed with one auxiliary fixed contact 611, and one auxiliary movable contact portion 620 is formed with only one auxiliary movable contact 621 that comes into contact with and separates from one auxiliary fixed contact 611.

[0089] In this embodiment, as described above, the auxiliary fixed contact portion 610 includes the first auxiliary contact terminal 612 having one auxiliary fixed contact 611.

[0090] Furthermore, the first auxiliary contact terminal 612 includes an upper piece 613 extending in the width axis (Y-axis: second axis) at the upper end side of the coil 210. An auxiliary fixed contact 611 is formed on this upper piece 613. In this embodiment, a member to serve as the auxiliary fixed contact is inserted into an insertion hole 613a formed in the upper piece 613 so as to penetrate in the plate thickness direction, and the upper piece 613 is riveted to form the auxiliary fixed contact 611 (see FIG. 11). In this way, in this embodiment, the upper piece 613 functions as a fixed-side auxiliary contact holder that holds the auxiliary fixed contact 611.

[0091] The auxiliary fixed contact 611 does not have to be formed on the upper piece 613 by riveting, and can be formed by various methods. For example, it is possible to dowel the upper piece 613 so that a protruding portion functions as the auxiliary fixed contact. Also, by configuring the auxiliary movable contact 621 to come into contact with part of the flat surface of the upper piece 613, it is possible to make part of the flat surface of the upper piece 613 function as the auxiliary fixed contact. It is also possible to provide a plurality of auxiliary fixed contacts 611 on the upper piece 613 (first auxiliary contact terminal 612).

[0092] Furthermore, the first auxiliary contact terminal 612 is connected to the outer end of the width axis (Y axis: second axis) of the upper piece 613, extends along the XZ plane, and has a vertically elongated side piece 614. In this embodiment, the side piece 614 is connected to the upper piece 613 so as to extend downward from the upper piece 613 along the vertical axis (Z axis: third axis), and is disposed to the side of the width axis (Y axis: second axis) of the coil 210.

[0093] The first auxiliary contact terminal 612 also includes a connecting piece 615 extending so as to protrude downward from the lower end of the side piece 614. The connecting piece 615 is formed so as to protrude downward (outward) from the base 110 in a state in which the side piece 614 is held by the coil bobbin 220 arranged on the base 110.

[0094] The side piece 614 includes a first side piece 6141 connected to the outer end of the upper piece 613 along the width axis (Y axis: second axis), and a connecting portion 6142 extending from the lower end of the first side piece 6141 toward the front of the front-rear axis (X axis: first axis). The side piece 614 also includes a second side piece 6143 extending from the lower front end of the connecting portion 6142 toward the bottom of the vertical axis (Z axis: third axis). A connecting piece 615 is connected to the bottom end of the second side piece 6143 so as to protrude downward (outward) from the housing 10. In this embodiment, a tip 6151 of the connecting piece 615 is positioned lower (toward the first end) than the coil 210 along the vertical axis (Z axis: third axis).

[0095] Thus, in this embodiment, the side piece 614 comprises a first side piece 6141 connected to the upper piece 613, a second side piece 6143 connected to the connecting piece 615 and positioned forward of the first side piece 6141 on the front-to-back axis (X axis: first axis), and a connecting portion 6142 connecting the first side piece 6141 and the second side piece 6143, and has a crank-shaped bent shape when viewed along the width axis (Y axis: second axis).

[0096] In this embodiment, the auxiliary fixed contact portion 610 is held by the coil bobbin 220.

[0097] Specifically, press-fit pieces 6141a protruding inward along the width axis (Y axis: second axis) are provided on both ends of the front-rear axis (X axis: first axis) of the first side piece 6141. The pair of press-fit pieces 6141a are press-fitted into a pair of press-fit openings 2221a of the upper auxiliary contact holder 2221 formed in the upper flange portion 222.

[0098] A press-fit piece 6143a protruding inward along the width axis (Y axis: second axis) is provided at the lower end of the front end side of the front-rear axis (X axis: first axis) of the second side piece 6143. The press-fit piece 6143a is press-fitted into a press-fit opening 2231a of a lower auxiliary contact holder 2231 formed in the lower flange portion 223.

[0099] In this way, the auxiliary fixed contact portion 610 is held by the coil bobbin 220 by press-fitting the pair of press-fit pieces 6141a into the pair of press-fit openings 2221a, respectively, and press-fitting the press-fit piece 6143a into the press-fit opening 2231a.

[0100] In this embodiment, the auxiliary fixed contact portion 610 is held by the coil bobbin 220 with the auxiliary fixed contact 611 facing downward along the vertical axis (Z-axis: third axis). That is, the auxiliary fixed contact portion 610 is held by the coil bobbin 220 with the surface of the upper piece 613 on which the auxiliary fixed contact 611 is formed (the lower surface: the surface facing the auxiliary movable contact 621) facing downward.

[0101] The auxiliary fixed contact 611 and the first auxiliary contact terminal 612 can be made of a conductive material such as a silver-based material or a copper-based material.

[0102] On the other hand, the auxiliary movable contact portion 620 includes the second auxiliary contact terminal 622 having one auxiliary movable contact 621 as described above.

[0103] The second auxiliary contact terminal 622 also has an upper piece 623 extending in the width direction (Y-axis: second axis) on the upper end side of the coil 210. An auxiliary movable contact 621 is formed on this upper piece 623.

[0104] In this embodiment, the upper piece 623 includes a substantially rectangular plate-shaped main body 6231 and a thin leaf spring 6232 that extends horizontally and is elongated along the width axis (Y axis: second axis). The leaf spring 6232 has the auxiliary movable contact 621.

[0105] In this embodiment, the leaf spring 6232 is bent in a crank shape so that the tip (the end on the inside of the Y-axis) is positioned downward. A member to serve as the auxiliary movable contact is inserted into an insertion hole 6232a formed at the tip of the leaf spring 6232 so as to penetrate in the plate thickness direction, and the member is riveted to the insertion hole 6232a, so that the leaf spring 6232 has the auxiliary movable contact 621 (see FIG. 11). In this way, in this embodiment, the leaf spring 6232 functions as a movable-side auxiliary contact holder that holds the auxiliary movable contact 621.

[0106] The auxiliary movable contact 621 does not have to be formed on the leaf spring 6232 by riveting, and can be formed by various methods. For example, it is possible to dowel the leaf spring 6232 so that a protruding portion functions as the auxiliary movable contact. Also, by configuring the auxiliary movable contact 621 to come into contact with a portion of the flat surface of the leaf spring 6232, it is possible to make a portion of the flat surface of the leaf spring 6232 function as the auxiliary movable contact. It is also possible to provide a plurality of auxiliary movable contacts 621 on the leaf spring 6232 (upper piece 623: second auxiliary contact terminal 622).

[0107] Furthermore, a main body 6231 is connected to the outer end of the width axis (Y axis: second axis) of the leaf spring 6232. Specifically, a pair of insertion holes 6232b are formed at the outer end of the width axis (Y axis: second axis) of the leaf spring 6232 so as to be aligned along the front-rear axis (X axis: first axis). Furthermore, a pair of protrusions 6231a are formed on the main body 6231 so as to be aligned along the front-rear axis (X axis: first axis). Then, the pair of protrusions 6231a are inserted into the pair of insertion holes 6232b, respectively, and riveted together, thereby connecting the leaf spring 6232 to the main body 6231.

[0108] The second auxiliary contact terminal 622 is connected to the outer end of the width axis (Y axis: second axis) of the main body 6231 (upper piece 623), extends along the XZ plane, and includes a vertically elongated side piece 624. In this embodiment, the side piece 624 is connected to the main body 6231 (upper piece 623) so as to extend downward along the vertical axis (Z axis: third axis) from the main body 6231 (upper piece 623), and is disposed to the side of the width axis (Y axis: second axis) of the coil 210.

[0109] The second auxiliary contact terminal 622 also includes a connecting piece 625 extending so as to protrude downward from the lower end of the side piece 624. The connecting piece 625 is formed so as to protrude downward (outward) from the base 110 in a state in which the side piece 624 is held by the coil bobbin 220 arranged on the base 110.

[0110] The side piece 624 includes a first side piece 6241 connected to the outer end of the main body 6231 (upper piece 623) along the width axis (Y axis: second axis), and a connecting portion 6242 extending from the lower end of the first side piece 6241 toward the front of the front-rear axis (X axis: first axis). The side piece 624 also includes a second side piece 6243 extending from the lower front end of the connecting portion 6242 toward the bottom of the vertical axis (Z axis: third axis). A connecting piece 625 is connected to the bottom end of the second side piece 6243 so as to protrude downward (outward) from the housing 10. In this embodiment, a tip 6251 of the connecting piece 625 is positioned lower (toward the first end) than the coil 210 along the vertical axis (Z axis: third axis).

[0111] Thus, in this embodiment, the side piece 624 comprises a first side piece 6241 connected to the main body 6231 (upper piece 623), a second side piece 6243 connected to the connecting piece 625 and positioned forward of the first side piece 6241 on the front-to-back axis (X axis: first axis), and a connecting portion 6242 connecting the first side piece 6241 and the second side piece 6243, and has a crank-shaped bent shape when viewed along the width axis (Y axis: second axis).

[0112] Furthermore, in this embodiment, the auxiliary movable contact portion 620 is held by the coil bobbin 220 .

[0113] Specifically, press-fit pieces 6241a protruding inward along the width axis (Y axis: second axis) are provided on both ends of the front-rear axis (X axis: first axis) of the first side piece 6241. The pair of press-fit pieces 6241a are press-fitted into a pair of press-fit openings 2221a of the upper auxiliary contact holder 2221 formed in the upper flange portion 222.

[0114] A press-fit piece 6243a protruding inward along the width axis (Y axis: second axis) is provided at the lower end of the front end side of the front-rear axis (X axis: first axis) of the second side piece 6243. The press-fit piece 6243a is press-fitted into a press-fit opening 2231a of a lower auxiliary contact holder 2231 formed in the lower flange portion 223.

[0115] In this way, the pair of press-fit pieces 6241a are press-fitted into the pair of press-fit openings 2221a, respectively, and the press-fit piece 6243a is press-fitted into the press-fit opening 2231a, so that the auxiliary movable contact 620 is held by the coil bobbin 220.

[0116] In this embodiment, the auxiliary movable contact portion 620 is held by the coil bobbin 220 with the auxiliary movable contact 621 facing upward along the vertical axis (Z-axis: third axis). That is, the auxiliary movable contact portion 620 is held by the coil bobbin 220 with the surface of the leaf spring 6232 on which the auxiliary movable contact 621 is formed (upper surface: the surface facing the auxiliary fixed contact 611) facing upward.

[0117] The auxiliary movable contact 621 and the second auxiliary contact terminal 622 can be made of a conductive material such as a silver-based material or a copper-based material.

[0118] A set consisting of one auxiliary fixed contact portion 610 and one auxiliary movable contact portion 620 configured in this way is housed in internal space S1 behind first side wall 131 on the front-rear axis (X-axis: first axis) and on the upper end side of coil 210 (see FIGS. 12 to 15). Auxiliary fixed contact 611 and auxiliary movable contact 621 are arranged above head 232 of iron core 230 on the up-down axis (Z-axis: third axis).

[0119] Here, auxiliary movable contact portion 620 is arranged so that leaf spring 6232 can swing along the vertical axis (Z axis: third axis) relative to auxiliary fixed contact portion 610. In this embodiment, auxiliary drive portion 70 allows leaf spring 6232 to swing along the vertical axis (Z axis: third axis) relative to auxiliary fixed contact portion 610. In other words, by switching the drive state of electromagnet device 20 and swinging auxiliary drive portion 70, it is possible to switch between conduction and non-conduction between auxiliary fixed contact portion 610 and auxiliary movable contact portion 620, which are paired with each other (having auxiliary contacts that move toward and away from each other).

[0120] In this embodiment, the auxiliary driving unit 70 is made of an insulating resin material and is held by the horizontal wall portion 311 of the armature 310. The auxiliary driving unit 70 is caused to swing along the vertical axis (Z axis: third axis) in accordance with the swing of the armature 310. In this way, the leaf spring 6232 is caused to swing along the vertical axis (Z axis: third axis) in accordance with the swing of the auxiliary driving unit 70 along the vertical axis (Z axis: third axis).

[0121] The auxiliary driving unit 70 includes a main body 71 and a fixing portion 72 that is connected to the main body 71 so as to protrude outward along the width axis (Y axis: second axis) and is held by the horizontal wall portion 311 of the armature 310. The auxiliary driving unit 70 further includes a push-up portion 73 that is connected to the main body 71 so as to protrude rearward along the front-rear axis (X axis: first axis) and that pushes the leaf spring 6232 upward.

[0122] In addition, in this embodiment, the fixing portion 72 includes an arm portion 721 that protrudes outward from the width axis (Y axis: second axis), and a hook portion 722 that is connected from the outer end of the width axis (Y axis: second axis) of the arm portion 721 toward the bottom (first end side) of the up-down axis (Z axis: third axis).

[0123] A held portion 3112 for holding the auxiliary driving unit 70 is formed at the rear of the front-rear axis (X-axis: first axis) on the horizontal wall portion 311 of the armature 310. The pair of hook portions 722 are hooked onto the held portion 3112, so that the auxiliary driving unit 70 is held on the horizontal wall portion 311 of the armature 310.

[0124] In this manner, in this embodiment, the auxiliary drive unit 70 is swung in conjunction with the swing of the armature 310, thereby switching between electrical continuity and non-conduction between the auxiliary fixed contact unit 610 and the auxiliary movable contact unit 620, which have auxiliary contacts that come into contact with and separate from each other. In other words, one end of the armature 310 brings the main contact unit 40 into contact with and separates the main contact unit 40, and the other end of the armature 310 brings the auxiliary contact unit 60 into contact with and separates the main contact unit 40.

[0125] With this configuration, the auxiliary movable contact portion 620 swings along the vertical axis (Z-axis: third axis) relative to the auxiliary fixed contact portion 610 in accordance with the swing of the armature 310. At this time, the auxiliary movable contact 621 swings in an arc centered on the outer end of the width axis (Y-axis: second axis) of the leaf spring 6232.

[0126] In this embodiment, the leaf spring 6232 is connected to the second auxiliary contact terminal 622 held by the coil bobbin 220 in a state in which the auxiliary movable contact 621 is separated from the auxiliary fixed contact 611 in a natural state. When the supply of current to the coil 210 is stopped, the push-up portion 73 of the auxiliary drive unit 70 comes into contact with the leaf spring 6232 and is pushed upward, so that the auxiliary movable contact 621 is in contact with the auxiliary fixed contact 611.

[0127] On the other hand, when the coil 210 is energized, the rear end of the horizontal wall portion 311 of the armature 310 rotates downward, and the auxiliary driving portion 70 moves downward in accordance with this downward rotation of the rear end of the horizontal wall portion 311. When the auxiliary driving portion 70 moves downward, the leaf spring 6232 moves downward due to its elastic restoring force, and the auxiliary movable contact 621 moves away from the auxiliary fixed contact 611.

[0128] Alternatively, the auxiliary driving unit 70 may use another method to drive the leaf spring 6232. As another method for the auxiliary driving unit 70 to drive the leaf spring 6232, for example, when the auxiliary driving unit 70 is separated from the leaf spring 6232, the elastic restoring force of the leaf spring 6232 causes the auxiliary movable contact 621 to come into contact with the auxiliary fixed contact 611 to establish a conductive state, and the auxiliary driving unit 70 presses down the leaf spring 6232, causing the auxiliary movable contact 621 to separate from the auxiliary fixed contact 611 to establish a non-conductive state.

[0129] In this manner, in this embodiment, the auxiliary contact portion 60 is provided so that the ON state and OFF state are opposite to those of the main contact portion 40 .

[0130] Next, an example of the operation of the electromagnetic relay 1 configured as described above will be described.

[0131] First, when coil 210 is not energized, the elastic force of hinge spring 320 moves horizontal wall portion 311 of armature 310 in a direction away from head 232 of iron core 230. At this time, vertical wall portion 312 of armature 310 is located rearward of the front-rear axis (X-axis: first axis), and therefore movable portion 50 is also located rearward of the front-rear axis (X-axis: first axis). In other words, main movable contact portion 420 held by movable portion 50 is separated from main fixed contact portion 410, and main movable contact 421 is separated from main fixed contact 411 (see FIGS. 12 and 14).

[0132] Meanwhile, the auxiliary driving unit 70 also moves in a direction away from the head 232 of the iron core 230, so that the leaf spring 6232 is pushed up by the pushing-up portion 73 of the auxiliary driving unit 70, and the auxiliary movable contact 621 comes into contact with the auxiliary fixed contact 611 (see Figures 12 and 14).

[0133] When the coil 210 is energized from this OFF state, the horizontal wall portion 311 of the armature 310 is attracted downward (toward the iron core 230) by electromagnetic force and moves toward the head portion 232 of the iron core 230 against the elastic force of the hinge spring 320. As the horizontal wall portion 311 rotates downward (toward the iron core 230), the vertical wall portion 312 rotates forward, and as the vertical wall portion 312 rotates forward, the movable portion 50 rotates forward. As a result, the movable contactor 422 held by the movable portion 50 rotates forward toward the main fixed contact portion 410, and the main movable contact 421 of the movable contactor 422 comes into contact with the main fixed contact 411 of the main fixed contact portion 410. In this way, the pair of main fixed contact portions 410 are electrically connected by the main movable contact portion 420 (see FIGS. 13 and 15 ).

[0134] Meanwhile, the auxiliary driving part 70 also moves in a direction approaching the head part 232 of the iron core 230, so that the push-up part 73 of the auxiliary driving part 70 is lowered downward, and the auxiliary movable contact 621 is separated from the auxiliary fixed contact 611. This releases the electrical connection between the auxiliary fixed contact part 610 and the auxiliary movable contact part 620 (see FIGS. 13 and 15) (see FIGS. 12 and 14).

[0135] Then, when the current to the coil 210 is stopped in this state, the horizontal wall portion 311 of the armature 310 rotates upward (away from the iron core 230) due to the biasing force of the hinge spring 320 and returns to its initial position. Accompanying this upward rotation of the horizontal wall portion 311, the vertical wall portion 312 rotates rearward, and accompanying the rearward rotation of the vertical wall portion 312, the movable portion 50 rotates rearward. As a result, the movable contactor 422 held by the movable portion 50 rotates rearward so as to move away from the main fixed contact portion 410, and the main movable contact 421 of the movable contactor 422 moves away from the main fixed contact 411 of the main fixed contact portion 410. This releases the electrical connection between the pair of main fixed contact portions 410, 410.

[0136] Meanwhile, auxiliary driving part 70 also moves in a direction away from head 232 of iron core 230, so that leaf spring 6232 is pushed up by push-up part 73 of auxiliary driving part 70 and returns to its initial position. As a result, auxiliary movable contact 621 comes into contact with auxiliary fixed contact 611, and auxiliary fixed contact part 610 and auxiliary movable contact part 620 are electrically connected.

[0137] As described above, in this embodiment, when the armature 310 is in the initial position, the main movable contact 421 and the main fixed contact 411 are separated from each other, and the auxiliary movable contact 621 and the auxiliary fixed contact 611 are in contact with each other, which is the second position (see FIGS. 12 and 14). On the other hand, when the armature 310 is in the abutting position, the main movable contact 421 and the main fixed contact 411 are in contact with each other, and the auxiliary movable contact 621 and the auxiliary fixed contact 611 are in contact with each other, which is the first position (see FIGS. 13 and 15).

[0138] Therefore, while the coil 210 is not energized, the pair of main fixed contacts 410, 410 are insulated from each other, and while the coil 210 is energized, the pair of main fixed contacts 410, 410 are conductive from each other. In this manner, in this embodiment, the main movable contact 421 is configured to be able to reciprocate (rotate) relative to the main fixed contact 411 along the front-rear axis (X-axis: first axis) between the first position and the second position.

[0139] On the other hand, while the coil 210 is not energized, the auxiliary fixed contact 610 and the auxiliary movable contact 620 are insulated, and while the coil 210 is energized, the auxiliary fixed contact 610 and the auxiliary movable contact 620 are conductive. In this manner, in this embodiment, the auxiliary movable contact 621 is configured to be able to reciprocate (rotate) relative to the auxiliary fixed contact 611 along the vertical axis (Z axis: third axis) between the first position and the second position.

[0140] Here, when the main movable contact 421 and the main fixed contact 411 are in contact with each other at the first position, current I flows through the movable contactor 422 mainly along the longitudinal direction (Y axis: second axis intersecting the first axis).

[0141] At this time, for example, as shown in Fig. 35, when a current I flows from the main movable contact 421 on the left side (the front side of Fig. 35) to the main movable contact 421 on the right side (the back side of Fig. 35), a magnetic flux B is generated from above downward on the surface 4221 on which the main movable contact 421 of the movable contactor 422 is formed. Note that the surface 4221 on which the main movable contact 421 of the movable contactor 422 is formed refers to the surface located on the side facing the main fixed contact portion 410, and may hereinafter be referred to as the front surface 4221 or the facing surface 4221.

[0142] When the current supply to the coil 210 is stopped, the main movable contact 421 separates from the main fixed contact 411 (moves from the state in FIG. 37 to the state in FIG. 38), and the opening of the contacts begins.

[0143] When this contact opening starts, an arc A is generated between the main movable contact 421 and the main fixed contact 411 in the early stage of the contact opening, and the arc A continues to carry current (see FIG. 38).

[0144] In this case, if current I flows from the main movable contact 421 on the right side of Figure 38 to the main movable contact 421 on the left side (if the current flows in the same direction as in Figure 35), current I will flow from the main movable contact 421 to the main fixed contact 411 in arc A generated between the main movable contact 421 and the main fixed contact 411 on the left side of Figure 38.

[0145] On the other hand, in the arc A generated between the main movable contact 421 and the main fixed contact 411 on the right side of FIG.

[0146] As described above, on the front surface 4221 side of the movable contact 422, that is, in the space where the arc A exists, a magnetic flux B is generated that flows from above downward.

[0147] Therefore, the arc A generated between the main movable contact 421 and the main fixed contact 411 on the left side of Figure 38 is subjected to a Lorentz force on the left side (outside the Y-axis) due to the current I flowing from the main movable contact 421 to the main fixed contact 411 and the magnetic flux B flowing from above to below.

[0148] As a result, arc A generated between main movable contact 421 and main fixed contact 411 on the left side of FIG. 38 is stretched to the left side of FIG. 38 (outside the Y axis).

[0149] In addition, the arc A generated between the main movable contact 421 and the main fixed contact 411 on the right side of Figure 38 is subjected to a Lorentz force on the right side (outside the Y-axis) due to the current I flowing from the main fixed contact 411 to the main movable contact 421 and the magnetic flux B flowing from above to below.

[0150] As a result, arc A generated between main movable contact 421 and main fixed contact 411 on the right side of FIG. 38 is stretched to the right side of FIG. 38 (outside the Y axis).

[0151] Arcs A generated at the main movable contacts 421 and main fixed contacts 411 are then stretched outward along the Y axis and extinguished, thereby cutting off the current flow between the main fixed contact portion 410 and the main movable contact portion 420.

[0152] Although not shown in the figure, when current I flows from the main movable contact 421 on the left side of Figure 38 to the main movable contact 421 on the right side (when current flows in the same direction as in Figure 36), current I flows from the main fixed contact 411 to the main movable contact 421 in the arc A generated between the main movable contact 421 on the left side of Figure 38 and the main fixed contact 411.

[0153] 38. In addition, an arc A generated between the main movable contact 421 and the main fixed contact 411 on the right side of FIG.

[0154] In this case, as described above, on the front surface 4221 side of the movable contact 422, that is, in the space where the arc A exists, magnetic flux B is generated from below to above.

[0155] Therefore, the arc A generated between the main movable contact 421 and the main fixed contact 411 on the left side of Figure 38 is subjected to a Lorentz force on the left side (outside the Y-axis) due to the current I flowing from the main fixed contact 411 to the main movable contact 421 and the magnetic flux B flowing from below to above.

[0156] As a result, arc A generated between main movable contact 421 and main fixed contact 411 on the left side of FIG. 38 is stretched to the left side of FIG. 38 (outside the Y axis).

[0157] In addition, the arc A generated between the main movable contact 421 and the main fixed contact 411 on the right side of Figure 38 is subjected to a Lorentz force on the right side (outside the Y-axis) due to the current I flowing from the main movable contact 421 to the main fixed contact 411 and the magnetic flux B flowing from below to above.

[0158] As a result, arc A generated between main movable contact 421 and main fixed contact 411 on the right side of FIG. 38 is stretched to the right side of FIG. 38 (outside the Y axis).

[0159] Arcs A generated at the main movable contacts 421 and main fixed contacts 411 are then stretched outward on the Y axis and extinguished.

[0160] In this way, the electromagnetic relay 1 of this embodiment is configured so that the arc A generated between the main movable contact 421 and the main fixed contact 411 is extended outside the Y axis and extinguished, regardless of the direction of the current.

[0161] Therefore, even when an alternating current flows through the main contact portion 40, as in an AC relay, the arc A generated between the main movable contact 421 and the main fixed contact 411 can be extinguished by extending it outside the Y axis.

[0162] At this time, the arc generated between the main movable contact 421 and the main fixed contact 411 is stretched in the space formed between the second side wall 132 and the side wall 1223 of the case 120. Therefore, in this embodiment, the space formed between the second side wall 132 and the side wall 1223 of the case 120 serves as an arc extension space S4 in which the arc is stretched (see FIG. 5).

[0163] However, if the arc A generated between the main movable contact 421 and the main fixed contact 411 is extended outward along the width axis (Y axis: second axis), consumable powder and the like may be scattered into the arc extension space S4. In this case, if the space S2 in which the main contact portion 40 is disposed and the space S3 in which the auxiliary contact portion 60 is disposed in the internal space S1 of the housing 10 are connected by a large passage, the auxiliary contact portion 60 may be affected by the consumable powder and the like. In particular, in an electromagnetic relay through which a large current flows, the auxiliary contact portion 60 will be significantly affected by the consumable powder and the like.

[0164] Therefore, in this embodiment, it is possible to more reliably prevent a decrease in the contact reliability of the auxiliary contact 60 even when a large current flows through the main contact 40. Specifically, a partition 130 is formed to divide the internal space S1 into a main contact-side space S2 in which the main contact 40 is present and an auxiliary contact-side space S3 in which the auxiliary contact 60 is present. In other words, the continuous portion of the partition 130 can define the main contact-side space S2 and the auxiliary contact-side space S3 of the internal space S1.

[0165] The partition wall 130 allows the main contact-side space S2, in which the main contact 40 is arranged, and the auxiliary contact-side space S3, in which the auxiliary contact 60 is arranged, to communicate with each other via a narrower gap. In other words, the partition wall 130 minimizes communication between the contact-side space S2 and the auxiliary contact-side space S3 via a relatively wide gap. This more reliably prevents wear powder and the like generated by the main contact 40 from entering the auxiliary contact-side space S3, in which the auxiliary contact 60 is located.

[0166] In this embodiment, the partition wall 130 has a first side wall 131 that is connected to the base 110 at the front side (first end side of the first axis) of the front-rear axis (X axis: first axis) of the coil 210 and extends along the up-down axis (Z axis: third axis).

[0167] The partition wall 130 also has a pair of second side walls 132 that are arranged on both sides of the width axis (Y axis: second axis) and are connected to the base 110 so as to extend along the up-down axis (Z axis: third axis).

[0168] In this way, in this embodiment, the first side wall 131 and the pair of second side walls 132 for supporting the yoke 240 also function as a partition wall 130 that divides the space into a main contact side space S2 in which the main contact portion 40 is located and an auxiliary contact side space S3 in which the auxiliary contact portion 60 is located.

[0169] In addition, the first side wall 131 is connected to the base 110 so that the main contact portion 40 and the movable portion 50 are located in front of the front-rear axis (X axis: first axis), and the auxiliary contact portion 60 and the coil 210 are located in rear of the front-rear axis (X axis: first axis) (the second end side of the first axis).

[0170] The first side wall 131 and the pair of second side walls 132 surround at least a part of the side surface 210a of the coil 210.

[0171] Furthermore, in this embodiment, the partition 130 has a pair of third side walls 133 arranged side by side along the width axis (Y axis: second axis) and arranged along the up-down axis (Z axis: third axis) and along the second side wall 132 (see Figures 16 and 17).

[0172] In this embodiment, the third side wall 133 is formed on the inside of the case 120. Specifically, the third side wall 133 extends from the inner surface of the top wall 121 along the front-rear axis (X-axis: first axis) and the up-down axis (Z-axis: third axis). The third side wall 133 is formed so that the rear end of the front-rear axis (X-axis: first axis) contacts the inner surface of the rear wall 1222.

[0173] Furthermore, the pair of third side walls 133 are formed to overlap at least a portion of the contact periphery of the auxiliary contact portion 60 when viewed from a direction perpendicular to the Z axis. This divides the arc extension space S4 and the auxiliary contact side space S3 of the main contact side space S2 by the third side walls 133. The third side walls 133 more reliably prevent worn powder and the like generated in the main contact portion 40 from passing through the arc extension space S4 and entering the auxiliary contact side space S3.

[0174] In this embodiment, the main contact-side space S2 is located above the main contact unit 40 and has a generally L-shaped space when viewed along the width axis (Y-axis: second axis). This space serves as the armature arrangement space S5 in which the armature 310 is arranged (see FIGS. 14 and 15 ). The armature 310 is arranged in the armature arrangement space S5 in a state in which it is permitted to swing, and therefore a relatively large gap is formed between the armature 310 and the case 120 within the armature arrangement space S5. This raises the risk that the armature 310 may become misaligned during swinging, or that worn powder and the like generated in the main contact unit 40 may enter the auxiliary contact-side space S3 through the relatively large gap formed between the armature 310 and the case 120.

[0175] Therefore, in this embodiment, the partition wall 130 is provided with a fourth side wall 134 that is provided on the case 120 so as to protrude below the vertical axis (Z axis: third axis) with the base 110 positioned below the case 120. The fourth side wall 134 is arranged to face the armature 310 above and below while extending along the width axis (Y axis: second axis) (see FIGS. 14 and 15).

[0176] Furthermore, in this embodiment, the fourth side wall 134 is arranged forward (toward the main contact unit 40) of the vertical wall portion (standing portion) 241 of the yoke 240 in the front-to-rear axis (X-axis: first axis), and has a pressing wall 1341 that can press the armature 310. By providing the pressing wall 1341 on the case 120, the armature 310 is prevented from shifting position during oscillation. In addition, because the pressing wall 1341 divides the armature arrangement space S5 into front and rear portions, the pressing wall 1341 can more reliably prevent worn powder and the like generated in the main contact unit 40 from entering the auxiliary contact-side space S3.

[0177] Furthermore, the fourth side wall 134 is arranged rearward (toward the auxiliary contact 60) of the vertical wall portion (standing portion) 241 of the yoke 240 in the front-rear axis (X-axis: first axis), and has a partition wall 1342 that can divide the space S5 above the armature 310. By providing the partition wall 1342 on the case 120, the partition wall 1342 can prevent worn powder and the like that cannot be completely prevented by the retaining wall 1341 from entering the auxiliary contact side space S3.

[0178] Furthermore, in this embodiment, the partition 130 has a fifth side wall 135 that extends along the vertical axis (Z axis: third axis) and is provided on the case 120 so as to be positioned outside the second side wall 132 in the width axis (Y axis: first axis).

[0179] In this embodiment, the fifth side wall 135 extends so as to protrude downward from the top wall 121 of the case 120 along the vertical axis (Z axis: third axis). When the case 120 is attached to the base 110, the lower end of the fifth side wall 135 is located in the middle between the base part 111 of the base 110 and the top wall 121 of the case 120.

[0180] The position of the lower end of the fifth side wall 135 only needs to be located between the base portion 111 of the base 110 and the top wall 121 of the case 120, and the amount of protrusion of the fifth side wall 135 from the top wall 121 can be set appropriately. By providing the fifth side wall 135 with such a shape, the arc extension space S4 is divided into front and rear portions, and therefore the fifth side wall 135 can more reliably prevent worn powder and the like generated in the main contact portion 40 from entering the auxiliary contact-side space S3.

[0181] In this embodiment, the second side wall 132 has an extending portion 1321 extending outward along the width axis (Y axis: second axis). The extending portion 1321 extends from the rear end of the front-rear axis (X axis: first axis) of the second side wall 132 along the width axis (Y axis: second axis) and the up-down axis (Z axis: third axis). In this embodiment, the extending portion 1321 is formed from the lower end to the upper end (partway to the upper end) of the second side wall 132. That is, the extending portion 1321 is connected to the second side wall 132 such that the upper end of the second side wall 132 protrudes above the upper end of the extending portion 1321 (see FIGS. 6 and 7).

[0182] Furthermore, when an arc A occurs between the main movable contact 421 and the main fixed contact 411, the arc heat may cause the main movable contact 421 and the main fixed contact 411 to weld together. Furthermore, the arc heat may cause the main movable contact 421 and the main fixed contact 411 to deteriorate.

[0183] In this way, when arc A occurs between main movable contact 421 and main fixed contact 411, the contacts (main movable contact 421 and main fixed contact 411) may be affected by the arc. In particular, in an electromagnetic relay through which a large current flows, the contacts (main movable contact 421 and main fixed contact 411) are greatly affected by the arc.

[0184] Therefore, it is preferable to more reliably and quickly extinguish the arc A that occurs between the main movable contact 421 and the main fixed contact 411, thereby preventing the contacts (main movable contact 421 and main fixed contact 411) from being affected by the arc.

[0185] Therefore, in this embodiment, it is possible to more reliably and more quickly extinguish the arc A that occurs between the main movable contact 421 and the main fixed contact 411. Specifically, the electromagnetic relay 1 is provided with a yoke 80 that is arranged on the side of at least one of the main body portion (first main body portion) 412 and the movable contactor (second main body portion) 422. In other words, the yoke 80 is arranged on the side of at least one of the main body portion 412 and the movable contactor 422.

[0186] In this way, by arranging the yoke 80 on at least one of the main body portion 412 and the movable contactor 422, the strength of the magnetic flux B generated around the member (main body portion 412 or movable contactor 422) on which the yoke 80 is arranged is increased, making it possible to extinguish the arc A more reliably and quickly.

[0187] Furthermore, in this embodiment, the electromagnetic relay 1 is provided with a fixing portion 90 that fixes the yoke 80 to the main body portions 422, 412 on which the yoke 80 is disposed. In other words, the yoke 80 and the main body portions 422, 412 on which the yoke 80 is disposed are fixed by the fixing portion 90. This makes it possible to prevent the yoke 80 and the main body portions 422, 412 on which the yoke 80 is disposed from becoming misaligned.

[0188] 26 to 33, in this embodiment, the yoke 80 is disposed on the side of the movable contactor 422, which is at least one of the main body 412 and the movable contactor 422. That is, in this embodiment, the movable contactor 422 is the main body on which the yoke 80 is disposed.

[0189] The movable contactor 422, which is a main body on which the yoke 80 is arranged, has an opposing surface 4221 located on the side where the first contact 411 and the second contact 412 face each other. The movable contactor 422 also has an arrangement surface 4222 located on the opposite side of the opposing surface 4221 along the front-rear axis (X axis: first axis).

[0190] Furthermore, in this embodiment, the placement surface 4222 has a specific region R1 that overlaps with the main body portion 412, which is the opposing main body portion, when viewed along the front-to-back axis (X axis: first axis) with the first contact 411 and the second contact 421 in contact.

[0191] That is, in this embodiment, when the state in which the main fixed contact 411 and the main movable contact 421 are in contact is viewed along the direction in which the main fixed contact 411 and the main movable contact 421 move relative to each other, the area where the main body portion (first main body portion) 412 and the movable contactor (second main body portion) 422 overlap is defined as the specific area R1 (see Figure 34).

[0192] The movable contactor 422 is configured so that a current I flows along a width axis (Y axis: second axis) that intersects with a front-rear axis (X axis: first axis) in the specific region R1.

[0193] The yoke 80 is disposed so that at least a portion thereof overlaps with the specific region R1 when viewed along the front-rear axis (X axis: first axis).

[0194] Specifically, the yoke 80 comprises a side wall 81 having an approximately rectangular shape and elongated along the width axis (Y axis: second axis), a top wall 82 connected to the upper end of the side wall 81, and a bottom wall 83 connected to the lower end of the side wall 81 and extending in the same direction as the top wall 82.

[0195] The front surface 81a of the side wall 81 is positioned opposite the back surface (arrangement surface) 4222 of the movable contact 422, with the tip 82b of the top wall 82 and the tip 83b of the bottom wall 83 facing forward of the front-to-back axis (X-axis: first axis).

[0196] Therefore, in this embodiment, the side wall 81 of the yoke 80 is a portion arranged on the surface (arrangement surface) 4222 side opposite to the side on which the main movable contact 421 of the movable contactor 422 is formed.

[0197] At this time, when viewed along the front-rear axis (X-axis: first axis), side wall 81 of yoke 80 is arranged so as to overlap with a contact (main movable contact 421) of a main body portion (movable contactor 422) on the side where yoke 80 is arranged. Therefore, when viewed along the front-rear axis (X-axis: first axis), side wall 81 of yoke 80 is arranged so as to overlap with contact region R2 where main fixed contact (first contact) 411 and main movable contact (second contact) 421 come into contact. In other words, yoke 80 is arranged so as to be aligned along the front-rear axis (X-axis: first axis) with contact (main movable contact) 421 of movable contactor 422, which is the main body portion on which yoke 80 is arranged.

[0198] Therefore, in this embodiment, when viewed along the direction in which the main fixed contact (first contact) 411 and the main movable contact (second contact) 421 move relative to each other, a part of the side wall 81 of the yoke 80 overlaps with the contact area R2 where the main fixed contact (first contact) 411 and the main movable contact (second contact) 421 come into contact (see FIG. 34). In this case, the side wall 81 is arranged to overlap with the entire contact area R2.

[0199] By doing this, at least a portion of the yoke 80 is arranged so as to be aligned with the magnetic flux B generated in the specific region R1, which is generated by the current I flowing through the movable contactor (the main body portion on which the yoke 80 is arranged) 422.

[0200] That is, at least a portion of the yoke 80 is arranged along the magnetic flux B generated around the movable contact (second main body portion) 422 in the space that belongs to the specific region R1 in the space near the movable contact (second main body portion) 422.

[0201] In this manner, in this embodiment, by arranging the yoke 80 as described above, it is possible to concentrate the magnetic flux B generated around the movable contactor (second main body portion) 422 within the yoke 80. The strength of the magnetic flux B generated around the movable contactor (second main body portion) 422 is increased (the magnetic field around the movable contactor 422 is strengthened), and the arc A generated between the main movable contact 421 and the main fixed contact 411 can be extinguished more reliably and more quickly.

[0202] In this embodiment, the movable contactor 422, which is the main body on which the yoke 80 is disposed, has an insertion hole (through hole) 422a formed therein, through which a contact member 4211 that forms a contact (main movable contact) 421 of the movable contactor 422 is inserted. The arrangement surface 4222 of the movable contactor 422 has a recess 4222a formed therein to accommodate the contact member 4211.

[0203] This prevents the yoke 80 from interfering with the contact member 4211 when arranging the yoke 80 on the movable contactor 422. This also improves the positioning accuracy of the yoke 80 and the movable contactor 422.

[0204] Furthermore, the movable contactor 422, which is a main body on which the yoke 80 is disposed, has side surfaces (upper surface 4223 and lower surface 4224) that are continuous with the opposing surface 4221 and the disposition surface 4222. The yoke 80 has arms that are disposed along the side surfaces (upper surface 4223 and lower surface 4224). In this embodiment, the top wall 82 is an arm that is disposed along the upper surface 4223, and the bottom wall 83 is an arm that is disposed along the lower surface 4224.

[0205] Furthermore, the fixed portion 90 has a protrusion 422b and an abutment portion 81ba with which the protrusion 422b can abut. In this embodiment, the protrusion 422b is provided on the movable contactor 422, which is the main body portion on which the yoke 80 is disposed. In other words, the protrusion 422b is provided directly on the movable contactor 422, which is the main body portion on which the yoke 80 is disposed.

[0206] Abutment portions 81ba are formed on the yoke 80. Specifically, a through hole (opening) 80b is formed in the side wall 81 of the yoke 80. Then, with the protrusion 422b of the movable contact 422 inserted into the through hole 80b, the yoke 80 and the movable contact 422 are crimped together so that a crimped portion 91 is formed at the tip of the protrusion 422b, thereby fixing the yoke 80 to the movable contact 422. Therefore, in this embodiment, the inner circumferential surface of the through hole 80b and the peripheral portion of the through hole 80b on the back surface 81b of the side wall 81 form the abutment portions 81ba with which the protrusion 422b can abut.

[0207] When the yoke 80 is fixed to the movable contact 422 , the lower surface 82 a of the top wall 82 is in surface contact with the upper surface 4223 of the movable contact 422 , and the upper surface 83 a of the bottom wall 83 is in surface contact with the lower surface 4224 of the movable contact 422 .

[0208] In this embodiment, two main movable contacts (first movable contact 421A and second movable contact 421B) are arranged side by side on the width axis (Y axis: second axis: direction intersecting the direction in which the first contact and the second contact move relative to each other) of one movable contactor 422. Also, two main body portions (first fixed contact side terminal 412A and second fixed contact side terminal 412B) have first fixed contact 411A and second fixed contact 411B.

[0209] The first movable contact 421A comes into contact with and separates from the first fixed contact 411A, and the second movable contact 421B comes into contact with and separates from the second fixed contact 411B.

[0210] Therefore, in this embodiment, yoke 80 has first yoke 840 arranged on the side where first movable contact 421A is located and second yoke 850 arranged on the side where second movable contact 421B is located. Then, first yoke 840 and second yoke 850 are connected by connecting portion 860.

[0211] In this manner, in this embodiment, the yoke 80 is exemplified as one in which the first yoke 840 and the second yoke 850 are integrated by the connecting portion 860.

[0212] In this embodiment, the yoke 80 has a shape in which a notch 80a is provided in the center of the Y axis, and the length of the Z axis at the center of the Y axis is shorter than the length at both ends of the Y axis. This notch 80a is provided to prevent the yoke 80 from interfering with the movable part 50.

[0213] The portion where notch 80a is formed in the center of the Y axis serves as connecting portion 860, and the portions on both ends of the Y axis serve as first yoke 840 and second yoke 850. In this way, by making the length of connecting portion 860 in the Z axis shorter than first yoke 840 and second yoke 850, magnetic flux B generated around movable contactor 422 can be more efficiently concentrated on the first yoke 840 or second yoke 850 side, and the strength of magnetic flux B generated around the contacts (main fixed contact 411 and main movable contact 421, which come into contact with and separate from each other) can be further increased.

[0214] The top wall 82 and the bottom wall 83 of the yoke 80 are also formed with notches 80a, one on each side of the Y axis, and these serve as the arms of the first yoke 840 and the second yoke 850, respectively.

[0215] Specifically, the top wall 82 connected to the first yoke 840 and disposed on the upper surface (first end surface) 4223 of the movable contactor 422 constitutes the first arm portion 841. The top wall 82 connected to the second yoke 850 and disposed on the upper surface (first end surface) 4223 of the movable contactor 422 constitutes the second arm portion 851.

[0216] In this embodiment, bottom walls 83 connected to first yoke 840 and second yoke 850 and disposed on the lower surface (second end surface) 4224 of movable contactor 422 serve as third arms. Bottom walls 83 are disposed below a portion of movable contactor 422 where notch 422c is not formed. Therefore, in this embodiment, when main fixed contact (first contact) 411 and main movable contact (second contact) 421 are spaced apart, shortest distance D1 between yoke 80 and main body 412 of main fixed contact portion 410, which is the mating main body, is shorter than shortest distance D2 between main body (first main body) 412 and movable contactor (second main body) 422 (see FIG. 25 ).

[0217] In this embodiment, a through-hole (opening) 80b for fixing the yoke 80 to the movable contactor 422 is formed in the connecting portion 860. That is, the protrusion 422b is provided at a position away from the main movable contact 421 of the movable contactor 422, which is the main body portion on which the yoke 80 is disposed.

[0218] This allows the yoke 80 to be fixed to the movable contactor 422 without being obstructed by the main movable contact 421, further improving the workability of assembling the yoke 80 to the movable contactor 422.

[0219] In this embodiment, the movable contactor 422 is connected to a movable spring (connecting member) 53 that moves integrally with the movable contactor 422 in response to excitation / de-excitation of the coil 210. The yoke 80 is also connected to the movable spring (connecting member) 53 together with the movable contactor 422. Specifically, the yoke 80 is connected to the movable spring (connecting member) 53 together with the movable contactor 422 at a connecting portion 860.

[0220] Furthermore, in this embodiment, when the yoke 80 and the movable contactor 422 are fixed by the fixing portion 90, the movable spring (connecting member) 53 is also fixed by the fixing portion 90. At this time, the movable spring (connecting member) 53 is arranged between the movable contactor 422 and the coupling portion 860.

[0221] By doing so, it is possible to suppress misalignment between the movable contact 422 and the yoke 80, and also to suppress misalignment between the movable contact 422 and the movable spring (connecting member) 53.

[0222] In this embodiment, the yoke 80 is disposed on the movable contactor 422, but the yoke 80 may be disposed on the main body 412. Also, the yoke 80 may be disposed on both the movable contactor 422 and the main body 412.

[0223] Furthermore, in this embodiment, the arc A generated between the main movable contact 421 and the main fixed contact 411 can be moved away from the main movable contact 421 and the main fixed contact 411 more quickly.

[0224] 18 to 23, a protruding portion 417 that protrudes toward the movable contactor 422 is formed on the main body 412. In this case, the protruding portion 417 is formed so as to be located rearward (toward the movable contactor 422) of the tip (top) 411a of the main fixed contact 411.

[0225] In this embodiment, the main fixed contact portion 410 has an outer extension portion 415 that is arranged outside between the main fixed contacts 411 that are arranged side by side along the width axis. The protrusion portion 417 is connected to this outer extension portion 415.

[0226] Here, in this embodiment, the protruding portion 417 has a first portion 4171 that protrudes upward (toward the second end) of the vertical axis from the upper surface (end surface) 415c of the outer extending portion 415. The protruding portion 417 also has a second portion 4173 that protrudes toward the main movable contact 421 side relative to the front surface (opposing surface: surface facing the main movable contact portion 420) of the main fixed contact portion 410. The protruding portion 417 also has a curved portion 4172 that connects the first portion 4171 and the second portion 4173.

[0227] Such a protrusion 417 can be formed, for example, by bending the upper part of a plate-shaped member that protrudes from the upper surface (end surface) 415c of the outer extension 415 above the vertical axis (second end side) by 180 degrees toward the rear of the front-to-rear axis.

[0228] In this manner, in this embodiment, the protrusion 417 is bent up and down and formed at a location away from the conductive portion (the portion through which current flows between the lead-out terminal 414 and the main fixed contact 411) of the main fixed contact portion 410. Furthermore, the protrusion 417 is formed outward between a pair of main fixed contacts 411 arranged side by side along the Y axis.

[0229] This allows a protrusion 417 to be formed near the outside between the main fixed contacts 411, and enables the arc A that occurs when the contacts are opened to be quickly moved from the main movable contact 421 or the main fixed contact 411 to the protrusion 417.

[0230] In this embodiment, the thickness of the main fixed contact portion 410 is increased to allow a large current to flow through the electromagnetic relay 1. Therefore, when the protrusion is formed by bending both ends of the width axis of the main fixed contact portion 410, it is necessary to provide a large notch in the current-carrying portion of the main fixed contact portion 410 in order to make it easier to bend the protrusion while reducing the width dimension of the main fixed contact portion 410. If a large notch is provided in the current-carrying portion of the main fixed contact portion 410, the width of the current-carrying portion of the main fixed contact portion 410 will be narrower than when no notch is provided, making it difficult to pass a large current.

[0231] In contrast to this, in this embodiment, unlike when protrusions are formed on both ends of the width axis of the main fixed contact portion 410, the protrusions 417 are formed without providing notches in the conductive portions of the main fixed contact portion 410. Specifically, the protrusions 417 are formed in positions away from the conductive portions of the main fixed contact portion 410.

[0232] The terminal connection portion 413 extends along the width axis so as to be present at least between an inner end 417a of the width axis of the protrusion 417 (the end on the main fixed contact 411 side) and the main fixed contact 411. In this embodiment, the terminal connection portion 413 extends along the width axis so as to be present between an outer end 417b of the width axis of the protrusion 417 and the main fixed contact 411.

[0233] This allows the protrusion 417 to be formed on the main fixed contact portion 410 without narrowing the width of the current-carrying portion of the main fixed contact portion 410 (reducing the terminal cross-sectional area of ​​the current-carrying portion). Furthermore, if the terminal cross-sectional area of ​​the current-carrying portion of the main fixed contact portion 410 is increased, it becomes possible to more reliably suppress heat generation caused by a large current.

[0234] In this way, in this embodiment, even if the plate thickness of the main fixed contact portion 410 is increased, it is possible to more reliably prevent the main movable contact 421 and the main fixed contact 411 from being affected by the arc A that occurs when the contacts are opened, while ensuring the terminal cross-sectional area of ​​the current-carrying portion.

[0235] In this embodiment, the first portion 4171 and the second portion 4173 are connected by a U-shaped curved portion 4172. The second portion 4173 faces the outer extension portion 415 at the front and rear.

[0236] This makes it possible to form the protrusion 417 simply by bending the plate 180 degrees, making it easier to form the protrusion 417. Note that if the first portion 4171 and the second portion 4173 are connected by a U-shaped curved portion 4172, it becomes easier to bring the protrusion 417 closer to the main fixed contact 411. Furthermore, if the protrusion 417 is formed by bending the plate 180 degrees, the amount of protrusion of the protrusion 417 rearward of the front-rear axis (X-axis: first axis) can be determined by setting the plate thickness, making it easier to control the amount of protrusion of the protrusion 417.

[0237] Furthermore, in this embodiment, the width W1 of the curved portion 4172 along the Y axis is set to be smaller than the length L1 connecting the curved apex 4172a of the curved portion 4172 and the lower end (tip) 4173a of the second portion 4173. This makes it easier to bend the plate at the portion that becomes the protrusion 417.

[0238] Furthermore, the second portion 4173 and the main fixed contact 411 are arranged side by side along the width axis. That is, the protrusion 417 is formed so that the second portion 4173 and the main fixed contact 411 are positioned at approximately the same vertical position. This makes the second portion 4173 and the main fixed contact 411 face each other along the width axis, which is the direction in which the arc A is extended. This makes it possible to more easily and reliably move the arc A, which is generated when the contacts are opened, quickly from the main movable contact 421 or the main fixed contact 411 to the protrusion 417.

[0239] Furthermore, the notch 4152 is formed inward on the width axis from the first portion 4171 of the outer extension portion 415. In this embodiment, the notch 4152 is formed so as to be positioned higher on the up-down axis than the main fixed contact 411. This reduces the amount of raw material required to form the main fixed contact portion 410 by punching it out.

[0240] Then, a tapered portion 4174 is formed in the second portion 4173, which narrows (the width along the Y axis narrows) toward the tip (bottom end). Specifically, when the main fixed contact portion 410 is viewed along the front-rear axis, the side of the second portion 4173 closer to the main fixed contact 411 on the inner side of the width axis (the fixed contact portion side) is inclined so as to become higher on the up-down axis as it goes toward the inner side of the width axis (the fixed contact portion side). In this way, the tapered portion 4174 is formed in the second portion 4173.

[0241] This configuration allows the device to be made smaller while still ensuring a contact gap (the distance required to maintain better insulation when the contacts are open) between the main fixed contact portion 410 and the main movable contact portion 420.

[0242] It is also possible to form protruding portion 417 without tapered portion 4174, or to form protruding portion 417 by bending a plate that protrudes upward from upper surface (end surface) 415c of outer extending portion 415 by 90 degrees. It is also possible to form protruding portion 417 by bending it by 90 degrees so that protruding portion 417 has tapered portion 4174. In other words, protruding portion 417 can have various shapes.

[0243] Furthermore, in this embodiment, the main fixed contact portion 410 is disposed between the main fixed contacts 411 and includes an inner extension portion 416 that faces the main movable contact portion 420 along the front-rear axis. When the main fixed contact portion 410 is fixed to the base 110 (housing 10), the inner extension portion 416 is press-fitted into an inner press-fit groove 116 formed in the base 110, and the outer extension portion 415 is press-fitted into an outer press-fit groove 117. At this time, a press-fit protrusion 116a that protrudes along the front-rear axis is provided in the inner press-fit groove 116, and this press-fit protrusion 116a allows the inner extension portion 416 to be press-fitted into the inner press-fit groove 116. Similarly, a press-fit protrusion 117a that protrudes along the front-rear axis is provided in the outer press-fit groove 117, and this press-fit protrusion 117a allows the outer extension portion 415 to be press-fitted into the outer press-fit groove 117.

[0244] Therefore, in this embodiment, when the main fixed contact portion 410 is fixed to the base 110 (housing 10), both sides (front surface 416a and back surface 416b) of the end portion 4161 of the inner extension portion 416 come into contact with the housing 10, and both sides (front surface 415a and back surface 415b) of the end portion 4151 of the outer extension portion 415 come into contact with the housing 10.

[0245] This makes it possible to further improve the positioning accuracy of the main fixed contact portion 410 to the housing 10. This makes it possible to more accurately determine the contact gap when the main movable contact 421 and the main fixed contact 411 are in the second position, and also ensures the contact pressure when the main movable contact 421 and the main fixed contact 411 are in the first position. Furthermore, because both sides of the width axis of the main fixed contact portion 410 are press-fitted and fixed into the housing 10, the main fixed contact portion 410 can be more firmly fixed to the housing 10.

[0246] Furthermore, in this embodiment, a movable-side protrusion 4226 that protrudes toward the main body 412 is formed at an end 4225 of the movable contactor 422 on the width axis (Y axis: second axis).

[0247] In this embodiment, the Y-axis end of the elongated, approximately rectangular plate-shaped member is bent forward (toward the main body 412) so that a movable side protrusion 4226 is formed on the movable contactor 422.

[0248] At this time, the movable-side protrusion 4226 is formed so that the tip 4226a of the movable-side protrusion 4226 is located forward (on the main body part 412 side) of the tip (top) 421a of the main movable contact 421.

[0249] Furthermore, in this embodiment, the movable-side protrusion 4226 is positioned more inward on the width axis (Y axis: second axis) than the protrusion 417 (see FIG. 37).

[0250] Furthermore, by making the main body 412 and the movable contactor 422 into the shapes described above, when an arc A occurs between the main movable contact 421 and the main fixed contact 411, the arc A's spark point (discharge point) A1 is moved toward the protrusion 417 and the movable side protrusion 4226 on the main movable contact 421 side and the main fixed contact 411 side.

[0251] Specifically, the Lorentz force acts on the arc A generated between the main movable contact 421 and the main fixed contact 411 outside the Y axis, stretching it outside the Y axis, causing the arc A generated between the main movable contact 421 and the main fixed contact 411 to move toward the protrusion 417 and the movable side protrusion 4224.

[0252] In this embodiment, since the movable side protrusion 4226 is positioned further inward on the Y axis than the protrusion 417, the arc A that moves toward the protrusion 417 and the movable side protrusion 4226 is stretched outward on the Y axis and rearward on the X axis.

[0253] Therefore, in this embodiment, as shown in Figure 39, when the main body 412 and the movable contact 422 are accommodated in the housing 10, a space is formed outside the Y axis and behind the X axis of the protrusion 417 and the movable side protrusion 4226.

[0254] This more reliably prevents the housing 10 and the components housed within the housing 10 from being affected by the arc A that is stretched outward along the Y axis and rearward along the X axis.

[0255] As shown in FIG. 40, the movable-side protrusion 4226 may be positioned further outward in the Y-axis direction than the protrusion 417.

[0256] For example, when the main body 412 and the movable contact 422 are accommodated in the housing 10, if a space is formed outside the Y axis and in front of the X axis of the protrusion 417 and the movable side protrusion 4226, the configuration shown in Figure 40 is preferable.

[0257] In this embodiment, the protrusions are provided on both the main body 412 and the movable contact 422, but the protrusions may be provided only on the main body 412.

[0258] Furthermore, the shape of the yoke 80 is not limited to the shape described in the first embodiment, but may be various other shapes.

[0259] For example, a yoke 80 shown in FIGS. 41 to 49 can be used.

[0260] The yoke 80 shown in Figures 41 to 49 also comprises a side wall 81 that is elongated in the width axis (Y axis: second axis) and has a generally rectangular shape, a top wall 82 connected to the upper end of the side wall 81, and a bottom wall 83 connected to the lower end of the side wall 81 and extending in the same direction as the top wall 82.

[0261] The front surface 81a of the side wall 81 is positioned opposite the back surface (arrangement surface) 4222 of the movable contact 422, with the tip 82b of the top wall 82 and the tip 83b of the bottom wall 83 facing forward of the front-to-back axis (X-axis: first axis).

[0262] Moreover, the top wall 82 serves as an arm portion disposed along the upper surface 4223 , and the bottom wall 83 serves as an arm portion disposed along the lower surface 4224 .

[0263] 41 to 49 also includes a first yoke 840 disposed on the side where first movable contact 421A is located, and a second yoke 850 disposed on the side where second movable contact 421B is located. First yoke 840 and second yoke 850 are connected by a connecting portion 860.

[0264] The yoke 80 is fixed by a fixing portion 90 to the movable contact 422, which is the main body portion on which the yoke 80 is disposed.

[0265] 41 to 49, of the first yoke 840, the second yoke 850, and the connecting portion 860, only the connecting portion 860 has a bottom wall (third arm portion) 83.

[0266] The bottom wall (third arm portion) 83 formed on the connecting portion 860 is accommodated in the notch portion 422c of the movable contactor 422. This prevents the third arm portion 83 from protruding downward from the movable contactor 422.

[0267] Furthermore, when the yoke 80 is fixed to the movable contact 422, the lower terminal surface (lower end surface) 81c of the side wall 81 at the portion that becomes the first yoke 840 and the second yoke 850 is positioned above the lower surface 4224 of the movable contact 422.

[0268] By doing this, when the main fixed contact (first contact) 411 and the main movable contact (second contact) 421 are spaced apart, the shortest distance D1 between the yoke 80 and the main body portion 412 of the main fixed contact portion 410, which is the opposing main body portion, is greater than the shortest distance D2 between the main body portion (first main body portion) 412 and the movable contactor (second main body portion) 422.

[0269] This makes it possible to more reliably prevent the contacts from being affected by arcs, while also reducing the influence of the electrical insulation provided by the yoke 80.

[0270] Also, a yoke 80 shown in FIGS. 50 to 57 may be used.

[0271] The yoke 80 shown in Figures 50 to 57 has a side wall 81 that is elongated in the width axis (Y axis: second axis) and has a generally rectangular shape, and a top wall 82 that is connected to the upper end of the side wall 81, but this yoke 80 does not have a bottom wall 83.

[0272] The top wall 82 is arranged so that the front surface 81a of the side wall 81 faces the back surface (arrangement surface) 4222 of the movable contact 422, with the tip 82b of the top wall 82 facing the front side of the front-rear axis (X-axis: first axis). The top wall 82 also serves as an arm that is arranged along the upper surface 4223.

[0273] 50 to 57 also includes a first yoke 840 disposed on the side where first movable contact 421A is located, and a second yoke 850 disposed on the side where second movable contact 421B is located. First yoke 840 and second yoke 850 are connected by a connecting portion 860.

[0274] The yoke 80 is fixed by a fixing portion 90 to the movable contact 422, which is the main body portion on which the yoke 80 is disposed.

[0275] When the yoke 80 is fixed to the movable contact 422, the lower terminal end surface (lower end surface) 81c of the side wall 81 in the portion that becomes the first yoke 840 and the second yoke 850 is positioned above the lower surface 4224 of the movable contact 422.

[0276] By doing this, when the main fixed contact (first contact) 411 and the main movable contact (second contact) 421 are spaced apart, the shortest distance D1 between the yoke 80 and the main body portion 412 of the main fixed contact portion 410, which is the opposing main body portion, is greater than the shortest distance D2 between the main body portion (first main body portion) 412 and the movable contactor (second main body portion) 422.

[0277] This makes it possible to more reliably prevent the contacts from being affected by arcs, while also reducing the influence of the electrical insulation provided by the yoke 80.

[0278] (Second embodiment) As shown in Figures 58 and 59, the electromagnetic relay 1 according to this embodiment includes a housing 10 formed from a resin material in the shape of a hollow box. In this embodiment, the housing 10 has a base 110 and a case 120 that covers the base 110, and has an outer surface that is substantially rectangular parallelepiped in shape. Furthermore, when the case 120 is attached to the base 110, an internal space S1 is formed within the housing 10. Note that the shape of the outer surface of the housing 10 is not limited to a rectangular parallelepiped shape and may be any shape.

[0279] An electromagnetic device (drive unit) 20 is arranged rearward on the front-rear axis (X-axis: first axis) within the internal space S1 of the housing 10, and a contact unit 40 is arranged forward of the front-rear axis (X-axis: first axis).

[0280] The electromagnet device 20 includes a coil bobbin 220 around which a coil 210 is wound, an iron core 230, a yoke 240, and a coil terminal 250. In this embodiment, the electromagnet device 20 also includes a permanent magnet 260 that is sandwiched by a portion of the yoke 240 that stands upright from the base 110.

[0281] The driving state of the electromagnet device 20 is switched to move the moving member 30.

[0282] In this embodiment, the moving member 30 includes an armature 310 arranged to face the iron core 230 along the vertical axis (Z axis), and a hinge spring 320 attached across the armature 310 and the yoke 240.

[0283] The armature 310 is made of a conductive metal and is arranged so as to be able to swing along a vertical axis (Z-axis) relative to the iron core 230 depending on whether the coil 210 is excited or de-excited.

[0284] This armature 310 has a horizontal wall portion 311 that faces the iron core 230 along the vertical axis (Z axis), and a vertical wall portion 312 that extends downward from the front end of the horizontal wall portion 311 along the front-rear axis (X axis).

[0285] By switching the drive state of the electromagnet device 20 and swinging the armature 310, it is possible to switch between electrical continuity and non-conduction between the fixed contact portion 410 and the movable contact portion 420 that are paired with each other (having contacts that come into and out of contact with each other).

[0286] The contact unit 40 includes a fixed contact unit 410 and a movable contact unit 420, and the fixed contact unit 410 includes a fixed contact 411 and a main body unit 412 having the fixed contact 411. On the other hand, the movable contact unit 420 includes a movable contact 421 that moves relative to the fixed contact 411 and can come into contact with and separate from the fixed contact 411, and a movable spring 422 having the movable contact 421. In this embodiment, the contact unit 40 includes one main body unit 412 having one fixed contact 411, and one movable spring 422 having one movable contact 421.

[0287] The contact portion 40 is connected to the armature 310 via the movable portion 50. The movable portion 50 is caused to swing along the front-rear axis (X-axis) in conjunction with the swing of the armature 310, so that the movable contact portion 420 swings along the front-rear axis (X-axis) in conjunction with the operation of the movable portion 50.

[0288] The movable portion 50 includes a main body portion 54, and is disposed between the vertical wall portion 312 of the armature 310 and the movable contact portion 420 of the contact portion 40. A rotation support shaft 55 provided at the lower end of the main body portion 54 is attached to the base 110 so as to be able to swing.

[0289] In addition, a first protrusion 56 that abuts against the vertical wall 312 is provided on the side of the main body 54 facing the vertical wall 312, and a second protrusion 57 that is positioned higher than the first protrusion 56 is provided on the side facing the contact portion 40.

[0290] When the vertical wall portion 312 moves in a direction away from the yoke 240 due to the driving of the electromagnet device 20, this moving force is input to the main body portion 54 via the first protrusion portion 56, causing the main body portion 54 to move in the direction of the contact portion 40.

[0291] In this embodiment, the contact portion 40 is configured as a contact in which the fixed contact 411 and the movable contact 421 are separated when the horizontal wall portion 311 of the armature 310 is not attracted to the iron core 230, and when the electromagnet device 20 is driven so that the horizontal wall portion 311 is attracted to the iron core 230, the fixed contact 411 and the movable contact 421 come into contact with each other.

[0292] 58, case 120 is formed as a rectangular parallelepiped housing that is open downwards overall, and case 120 is attached to base 110 by fitting its lower open end in a substantially tight fit with a step formed on the outer periphery of base 110. At this time, protrusion 112a of base 110 is inserted into insertion hole 122a of case 120, preventing case 120 from slipping out.

[0293] A partition wall 130 is formed inside the case 120. The partition wall 130 is provided so as to be located between the vertical wall portion 312 of the armature 310 and the movable portion 50. The partition wall 130 is formed with a notch 130a through which the first protrusion 56 passes.

[0294] Here, in this embodiment as well, it is possible to more reliably and more quickly extinguish the arc A generated between the movable contact 421 and the fixed contact 411. In this embodiment, the arc A is extended upward (outside the Z axis).

[0295] Specifically, the electromagnetic relay 1 includes a yoke 80 disposed on the side of at least one of the main body portion (first main body portion) 412 and the movable spring (second main body portion) 422, 412.

[0296] Furthermore, the electromagnetic relay 1 is provided with a fixing portion 90 that fixes the yoke 80 and the main body portions 422, 412 on which the yoke 80 is disposed.

[0297] 58 and 59, in this embodiment, the yoke 80 is disposed on the side of the main body 412, which is at least one of the main body 412 and the movable spring 422. That is, in this embodiment, the main body 412 of the fixed contact portion 410 is the main body on which the yoke 80 is disposed.

[0298] The main body 412 on which the yoke 80 is disposed has an opposing surface 4121 located on the side where the first contact 411 and the second contact 412 face each other. The main body 412 also has an arrangement surface 4122 located on the opposite side of the opposing surface 4121 along the front-rear axis (X axis: first axis).

[0299] Furthermore, when viewed along the front-to-rear axis (X-axis: first axis) with the first contact 411 and the second contact 421 in contact, the placement surface 4122 has a specific region R1 that overlaps with the movable spring 422, which is the opposing main body portion.

[0300] The main body 412 is configured so that a current I flows along a top-bottom axis (Z-axis: second axis) that intersects with a front-back axis (X-axis: first axis) in the specific region R1.

[0301] The yoke 80 is disposed so that at least a portion thereof overlaps with the specific region R1 when viewed along the front-rear axis (X axis: first axis).

[0302] Specifically, the yoke 80 comprises a side wall 81 having an approximately rectangular shape and elongated along the vertical axis (Z axis: second axis), a first wall 82 connected to a first end of the width axis of the side wall 81, and a second wall 83 connected to a second end of the side wall 81 and extending in the same direction as the first wall 82.

[0303] Then, with the tip of the first wall 82 and the tip of the second wall 83 facing rearward of the front-to-rear axis (X-axis: first axis), the front surface 81a of the side wall 81 is positioned opposite the back surface (arrangement surface) 4122 of the main body portion 412.

[0304] At this time, when viewed along the front-rear axis (X axis: first axis), side wall 81 of yoke 80 is arranged so as to overlap with a contact (fixed contact 411) of the main body portion (main body portion 412) on the side where yoke 80 is arranged. Therefore, when viewed along the front-rear axis (X axis: first axis), side wall 81 of yoke 80 is arranged so as to overlap with contact region R2 where fixed contact (first contact) 411 and movable contact (second contact) 421 come into contact. In other words, yoke 80 is arranged so as to be aligned along the front-rear axis (X axis: first axis) with contact (fixed contact) 421 of main body portion 412 on which yoke 80 is arranged.

[0305] In this manner, in this embodiment, by arranging yoke 80 as described above, magnetic flux B generated around main body portion (first main body portion) 412 can be concentrated within yoke 80. The strength of magnetic flux B generated around main body portion (first main body portion) 412 is increased (the magnetic field around main body portion 412 is strengthened), and arc A generated between movable contact 421 and fixed contact 411 can be extinguished more reliably and more quickly.

[0306] Furthermore, the main body 412 on which the yoke 80 is disposed has side surfaces (first surface 4123 and second surface 4124) connected to the opposing surface 4121 and the disposition surface 4122. The yoke 80 has arms disposed along the side surfaces (first surface 4123 and second surface 4124). In this embodiment, the first wall 82 is an arm disposed along the first surface 4123, and the second wall 83 is an arm disposed along the second surface 4124.

[0307] Furthermore, the fixed portion 90 has a protrusion 411b and an abutment portion 81ba with which the protrusion 411b can abut. In this embodiment, the protrusion 411b is provided on a contact point 411 of the main body portion 412 on which the yoke 80 is disposed.

[0308] Abutment portions 81ba are formed on the yoke 80. In this embodiment as well, the inner circumferential surface of the through hole 80b and the peripheral edge of the through hole 80b on the back surface 81b of the side wall 81 form the abutment portions 81ba with which the protrusions 422b can abut.

[0309] In the present embodiment, the yoke 80 is disposed on the main body 412 of the fixed contact portion 410, but the yoke 80 may be disposed on the movable spring 422. Furthermore, the yoke 80 may be disposed on both the main body 412 and the movable spring 422.

[0310] [Actions and Effects] The following describes the characteristic configurations of the electromagnetic relays shown in the above-described embodiments and their modifications, and the effects obtained thereby.

[0311] (1) The electromagnetic relay 1 shown in each of the above embodiments and their modified examples includes an electromagnet device 20 having a coil 210. The electromagnetic relay 1 also includes a first contact 411 and a second contact 421 that faces the first contact 411 along the first axis and is movable relative to the first contact 411 to make contact or separate. The electromagnetic relay 1 also includes a first body portion 412 that has the first contact 411 and a second body portion 422 that has the second contact 421. The electromagnetic relay 1 also includes a yoke 80 that is arranged on the body portion 422, 412 side of at least one of the first body portion 412 and the second body portion 422, and a fixing portion 90 that fixes the yoke 80 to the body portions 422, 412 on which the yoke 80 is arranged.

[0312] Here, the main body portions 422, 412 on which the yoke 80 is arranged have opposing surfaces 4221, 4121 located on the side where the first contact 411 and the second contact 421 face each other, and arrangement surfaces 4222, 4122 located on the opposite side of the opposing surfaces 4221, 4121 on the first axis.

[0313] Furthermore, the arrangement surfaces 4222, 4122 have a specific region R1 that overlaps with the mating main body portions 412, 422 when viewed along the first axis with the first contact 411 and the second contact 421 in contact. The yoke 80 is arranged so that at least a portion of it overlaps with the specific region R1 when viewed along the first axis.

[0314] Furthermore, the main body portions 422, 412 in which the yoke 80 is disposed are configured so that the current I flows along a second axis that intersects with the first axis in the specific region R1.

[0315] Here, fixed portion 90 has protrusions 422b, 411b formed on at least one of main body portions 422, 412 on which yoke 80 is disposed and contact points 421, 411 on main body portions 422, 412 on which yoke 80 is disposed. Furthermore, fixed portion 90 has a contact portion 81ba that is provided on yoke 80 and against which protrusion 422b can come into contact.

[0316] This allows magnetic flux B generated around main body portions 422, 412 on the side where yoke 80 is arranged to be concentrated within yoke 80. As a result, the strength of magnetic flux B generated around main body portions 422, 412 on the side where yoke 80 is arranged is increased (magnetic field is strengthened), and arc A generated between first contact point 411 and second contact point 421 can be extinguished more reliably and more quickly.

[0317] Furthermore, since the yoke 80 and the main body parts 422, 412 on which the yoke 80 is disposed are fixed by the fixing part 90, it is possible to prevent misalignment between the yoke 80 and the main body parts 422, 412 on which the yoke 80 is disposed. As a result, it is possible to more reliably increase the strength of the magnetic flux B generated around the main body parts 422, 412 on which the yoke 80 is disposed.

[0318] In this way, with the electromagnetic relay 1 shown in each of the above-described embodiments and their modifications, it is possible to more reliably prevent the contacts from being affected by arcs.

[0319] (2) The yoke 80 and the main body portions 422 and 412 on which the yoke 80 is disposed may be fixed by caulking using the protrusions 422b and 411b.

[0320] This makes it possible to more reliably fix the yoke 80 and the main body portions 422, 412 on which the yoke 80 is disposed, and more reliably prevent the contacts from being affected by arcs.

[0321] (3) Furthermore, the protrusion 422b may be formed on the main body portion 422 on which the yoke 80 is disposed.

[0322] In this way, by providing protrusion 422b directly on main body 422 on which yoke 80 is disposed, it is possible to further improve the positioning accuracy between yoke 80 and main body 422 on which yoke 80 is disposed. As a result, it is possible to more reliably prevent the contact from being affected by arcing.

[0323] (4) Furthermore, protrusion 411b may be formed on contact 411 of main body 412 on which yoke 80 is disposed.

[0324] This allows the shape of main body 412 to be further simplified, making it easier to manufacture main body 412. Furthermore, since yoke 80 can be fixed in the process of attaching contacts 411 to main body 412, the workability of assembling yoke 80 to main body 412 can be further improved.

[0325] (5) The yoke 80 may also have openings 80b in which the protrusions 422b and 411b are accommodated.

[0326] This makes it possible to further improve the positioning accuracy between the yoke 80 and the main body portions 422 and 412 on which the yoke 80 is disposed.

[0327] (6) Furthermore, the yoke 80 and the contacts 421, 411 of the main body portions 422, 412 on which the yoke 80 is disposed may be arranged side by side along the first axis.

[0328] This makes it possible to more reliably concentrate the magnetic flux B around the contacts 421 and 411, and more reliably prevent the contacts from being affected by the arc.

[0329] (7) Furthermore, main body 422 on which yoke 80 is disposed may have insertion holes (through holes) 422a through which contact members 4211 that form contacts 421 of main body 422 on which yoke 80 is disposed are inserted. Also, arrangement surface 4222 may have recesses 4222a that are provided to accommodate contact members 4211.

[0330] This prevents interference with the contact member 4211 when the yoke 80 is placed on the main body 422, thereby making it possible to further improve the positioning accuracy between the yoke 80 and the main body parts 422, 412 on which the yoke 80 is placed.

[0331] (8) Furthermore, the main body portions 422, 412 on which the yoke 80 is disposed may have side surfaces 4223, 4224, 4123, 4124 that are continuous with the opposing surfaces 4221, 4121 and the arrangement surfaces 4222, 4122. The yoke 80 may have arm portions 82, 83 that are disposed along the side surfaces 4223, 4224, 4123, 4124.

[0332] This makes it possible to more reliably concentrate magnetic flux B around main body portions 422 and 412, and more reliably prevent the contacts from being affected by arcs.

[0333] (9) Furthermore, the main body 422 on which the yoke 80 is disposed may have a notch 422c for accommodating the arms 82 and 83.

[0334] This makes it possible to prevent the arms 82 and 83 from protruding from the main body 422. As a result, it becomes possible to reduce the size of the electromagnetic relay 1.

[0335] (10) Furthermore, when the first contact 411 and the second contact 421 are spaced apart, the shortest distance D1 between the yoke 80 and the mating main body portion 412, 422 may be equal to or greater than the shortest distance D2 between the first main body portion 412 and the second main body portion 422.

[0336] This makes it possible to more reliably prevent the contacts from being affected by arcs, while also reducing the influence of the electrical insulation provided by the yoke 80.

[0337] (11) Furthermore, the protrusion 422b may be provided at a location away from the contact point 421 of the main body 422 on which the yoke 80 is disposed.

[0338] This allows the yoke 80 to be fixed to the main body 422 without being obstructed by the contact 421, thereby further improving the workability of assembling the yoke 80 to the main body 422.

[0339] (12) Furthermore, first contact 411 may have first fixed contact 411A and second fixed contact 411B. Furthermore, second contact 421 may have first movable contact 421A that comes into contact with and separates from first fixed contact 411A and second movable contact 421B that comes into contact with and separates from second fixed contact 411B. Furthermore, first body 412 may have first fixed contact side terminal 412A that has first fixed contact 411A and second fixed contact side terminal 412B that has second fixed contact 411B. Furthermore, second body 422 may be a movable contactor and have first movable contact 421A and second movable contact 421B that are arranged side by side along the second axis. Furthermore, body 422 in which yoke 80 is arranged may be movable contactor 422.

[0340] This makes it possible to provide an electromagnetic relay 1 through which a larger current flows than an electromagnetic relay having only one pair of first contact 411 and second contact 421.

[0341] (13) Furthermore, yoke 80 may have first yoke 840 arranged on the side where first movable contact 421A is located, and second yoke 850 arranged on the side where second movable contact 421B is located. Furthermore, yoke 80 may have connecting portion 860 connecting first yoke 840 and second yoke 850.

[0342] In this way, by connecting two yokes 840, 850 with connecting portion 860, it becomes possible to concentrate magnetic flux B more around first fixed contact side terminal 412A and second fixed contact side terminal 412B. As a result, it becomes possible to more reliably prevent the contacts from being affected by arcs.

[0343] (14) Furthermore, the device may further include a connecting member 53 that moves integrally with the movable contact 422 in response to excitation / de-excitation of the coil 210. The connecting member 53 may be disposed between the movable contact 422 and the coupling portion 860.

[0344] This makes it possible to further improve the positioning accuracy between the movable contact 422 and the yoke 80.

[0345] (15) Furthermore, the movable contact 422 may have side surfaces 4223, 4224 connected to the opposing surface 4221 and the arrangement surface 4222. The side surfaces 4223, 4224 may have a first end surface 4223 and a second end surface 4224 aligned along a third axis intersecting the first axis and the second axis. The first yoke 840 may have a first arm portion 841 arranged on the first end surface 4223. The second yoke 850 may have a second arm portion 851 arranged on the first end surface 4223.

[0346] This makes it possible to reduce the size of the electromagnetic relay 1 and more reliably prevent the contacts from being affected by arcs.

[0347] (16) Furthermore, the yoke 80 may have a third arm portion 83 disposed on the second end surface 4224. Of the first yoke 840, the second yoke 850, and the connecting portion 860, only the connecting portion 860 may have the third arm portion 83.

[0348] This makes it possible to reduce the size of the electromagnetic relay 1 and more reliably prevent the contacts from being affected by arcs.

[0349] (17) In addition, the end 4225 of the second axis of the movable contactor 422 may have a protrusion 4226 that protrudes toward at least one of the first fixed contact side terminal 412A and the second fixed contact side terminal 412B.

[0350] In this way, arc A, which is generated when the contacts are opened, can be moved quickly from first contact 411 or second contact 421 to protruding portion 422.

[0351] [others] The electromagnetic relay according to the present disclosure has been described above, but it is not limited to this description, and it will be obvious to those skilled in the art that various modifications and improvements are possible.

[0352] For example, it is possible to appropriately combine the configurations shown in the above-described embodiments and their modifications.

[0353] Furthermore, in the above-described first embodiment and its modified example, the auxiliary contact unit 60 is set to the OFF state when the main contact unit 40 is set to the ON state, but it is also possible for the auxiliary contact unit 60 to be set to the ON state when the main contact unit 40 is set to the ON state. In this case, the main contact unit 40 and the auxiliary contact unit 60 can be so-called normally closed contact units that are set to the ON state in the initial state, or the main contact unit 40 and the auxiliary contact unit 60 can be so-called normally open contact units that are set to the OFF state in the initial state.

[0354] Furthermore, in the first embodiment and its modified examples, the electromagnetic relay 1 is illustrated as being equipped with the auxiliary contact portion 60, but it is also possible to configure the electromagnetic relay 1 as not being equipped with the auxiliary contact portion 60.

[0355] Furthermore, in the above-described embodiments and their modifications, the movable spring 53 is used as an example of the connecting member, but it is also possible to form the connecting member using a member other than a spring.

[0356] Furthermore, in each of the above embodiments and their modified examples, a through hole is used as an example of the opening, but the shape of the opening is not limited to this and can be various shapes such as a notch or a recess.

[0357] In addition, in the above-described embodiments and their modified examples, the yoke 80 and the main body portions 422, 412 on which the yoke 80 is disposed are fixed by crimping using the protrusions 422b, 411b. However, the yoke 80 and the main body portions 422, 412 on which the yoke 80 is disposed can be fixed by a method other than crimping, such as press-fitting.

[0358] Furthermore, it is also possible to provide the main bodies 412, 422 shown in the second embodiment with protrusions that quickly move the arc A that is generated when the contacts are opened. In this case, the protrusions are provided on the tops of the main bodies 412, 422.

[0359] Furthermore, the fixed contact portion, the movable contact portion, and other detailed specifications (shape, size, layout, etc.) can also be changed as appropriate. [Explanation of symbols]

[0360] 1 Electromagnetic relay 20 Electromagnetic device 210 Coil 411 Main fixed contact (1st contact) 411A First fixed contact 411B Second fixed contact 411b Protrusion 412 Main body (first main body) 412A First fixed contact terminal 412B Second fixed contact terminal 4121 Front (opposite side) 4122 Back (placement surface) 421 Main movable contact (second contact) 421A First moving contact 421B Second moving contact 4211 Second contact element (contact element) 422 Movable contactor (second main body part) 422a Insertion hole (through hole) 422b Protrusion 422c Cutout 4221 Front (opposite side) 4222 Back (placement surface) 4222a Recess 4223 Top surface (side surface: 1st end surface) 4224 Bottom surface (side surface: second end surface) 4225 End 4226 Movable side protrusion (protrusion) 53 Movable spring (connecting member) 80 York 80b Through hole (opening) 81ba Contact part 82 Ceiling wall (arm) 83 Bottom wall (arm: 3rd arm) 840 First York 841 1st arm 850 Second York 851 2nd arm 860 Connection section 90 Fixed part D1: Shortest distance between the first body part and the second body part D2 The shortest distance between the yoke and the body other than the body in which the yoke is located I current R1 Specific area X Anteroposterior axis (1st axis) Y width axis (second axis) Z vertical axis (3rd axis)

Claims

1. a first fixed contact; a second fixed contact located to the left of the first fixed contact; A coil and an iron core disposed within the coil; a rotating armature having a first wall portion disposed above the iron core and a second wall portion extending downward from the first wall portion; a movable contactor having a first movable contact and a second movable contact located to the left of the first movable contact, and disposed rearward of the first fixed contact and the second fixed contact, and moving, with rotation of the armature, between a first position where the first movable contact is in contact with the first fixed contact and the second movable contact is in contact with the second fixed contact, and a second position where the first movable contact is separated from the first fixed contact and the second movable contact is separated from the second fixed contact; a yoke provided behind the movable contact; Equipped with Electromagnetic relay.

2. The movable contactor is a first portion having the first movable contact; a second portion having the second movable contact; a third portion located between the first portion and the second portion and connecting the first portion and the second portion; and The yoke is fixed to the movable contactor behind the third portion.

2. The electromagnetic relay according to claim 1.

3. the yoke has a first opening; the third portion of the movable contactor has a first protrusion that protrudes rearward and is inserted into the first opening to fix the yoke to the movable contactor; 3. The electromagnetic relay according to claim 2.

4. the yoke further has a second opening located to the left of the first opening, the third portion of the movable contactor further has a second protrusion located to the left of the first protrusion, protruding rearward, and inserted into the second opening to fix the yoke to the movable contactor; 4. The electromagnetic relay according to claim 3.

5. The yoke is a first yoke portion located behind the movable contact; a second yoke portion extending forward from the first yoke portion and facing an upper surface or a lower surface of the movable contact; having 2. The electromagnetic relay according to claim 1.

6. The movable contactor is a first portion having the first movable contact; a second portion having the second movable contact; a third portion located between the first portion and the second portion and connecting the first portion and the second portion; and the first yoke portion is located rearward of the first portion, the second portion, and the third portion; The second yoke portion faces the upper or lower surface of the first portion or the second portion, or the lower surface of the third portion.

6. An electromagnetic relay according to claim 5.

7. a movable part that connects the armature and the movable contact in an insulated manner; the movable portion is disposed between the yoke and the movable contact and has a connecting member connected to the movable contact.

2. The electromagnetic relay according to claim 1.

8. The movable contactor is a first portion having the first movable contact; a second portion having the second movable contact; a third portion located between the first portion and the second portion and connecting the first portion and the second portion; and the connecting member is disposed rearward of the third portion and forward of the yoke; 8. An electromagnetic relay according to claim 7.

9. the yoke has a first opening; the connecting member has a first through hole overlapping with the first opening, the third portion of the movable contactor has a first protrusion that protrudes rearward and is inserted into the first through hole and the first opening to fix the yoke and the connecting member to the movable contactor; 9. The electromagnetic relay according to claim 8.

10. the yoke further has a second opening located to the left of the first opening, the connecting member has a second through hole located to the left of the first through hole and overlapping with the second opening, the third portion of the movable contactor has a second protrusion located to the left of the first protrusion, protruding rearward, and inserted into the second through hole and the second opening to fix the yoke and the connecting member to the movable contactor; 10. The electromagnetic relay according to claim 9.

11. The movable contactor is a first portion having the first movable contact; a second portion having the second movable contact; a third portion located between the first portion and the second portion and connecting the first portion and the second portion; and The yoke is a first yoke portion located behind the first portion, the second portion, and the third portion of the movable contact; a second yoke section extending forward from the first yoke section, the second yoke section having a first yoke protrusion facing an upper side surface of the first section and a second yoke protrusion facing an upper side surface of the second section; having 2. The electromagnetic relay according to claim 1.

12. The protrusions and an opening into which the protrusion is inserted; and The movable contact and the yoke are fixed by inserting the protrusion into the opening.

2. The electromagnetic relay according to claim 1.

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