CN115732270A - Electromagnetic relay - Google Patents

Abstract

An electromagnetic relay (1) includes a main body (412), a movable contact (422), a yoke (80) and a fixed portion (90). In addition, one of the main body (412) and the movable contact (422) has an arrangement surface (4222). In addition, the yoke (80) is arranged to at least partially overlap a specific region (R1) of the arrangement surface (4222). Furthermore, the fixing part (90) has a protrusion (422b) formed on the movable contact (422) or the movable contact (421) of the movable contact (422). Furthermore, the fixing part (90) has a contact part (81ba) which is provided on the yoke (80) and which can be contacted by the protrusion (422b).

Description

Electromagnetic relay

technical field

The present disclosure relates to an electromagnetic relay.

Background technique

Conventionally, as an electromagnetic relay, an electromagnetic relay as disclosed in the following Patent Document 1 is known. The electromagnetic relay includes a fixed contact portion and a movable contact portion, the fixed contact portion has a fixed contact, and the movable contact The point portion has a movable contact that moves relative to the fixed contact and can be contacted and separated from the fixed contact.

In this Patent Document 1, by contacting and separating the fixed contact and the movable contact, it is possible to switch between conduction and non-conduction between the fixed contact portion and the movable contact portion.

prior art literature

patent documents

Patent Document 1: Japanese Unexamined Patent Publication No. 2012-104277

Contents of the invention

It is preferable that when switching the conduction and non-conduction between the fixed contact part and the movable contact part by making the fixed contact part and the movable contact part contact and separate like the above-mentioned conventional technology, it is preferable that the movable contact can be suppressed. , The case where the fixed contacts are affected by the arc generated when the contacts are opened.

Therefore, an object of the present disclosure is to obtain an electromagnetic relay capable of more reliably suppressing the contact from being affected by the arc.

The electromagnetic relay of the present disclosure includes: an electromagnet device, which has a coil; a first contact; a second contact, which is opposite to the first contact in the front-rear direction and can move relative to the first contact and contact separation; the first main body, which has the first contact; the second main body, which has the second contact; the yoke, which is fixed to the second main body; and the fixed part, which The yoke is fixed to the second main body, and the second main body has an opposing surface on a side where the first contact is opposite to the second contact and an opposite surface located on the opposite surface. A configuration surface on the side, the configuration surface has a specific region overlapping with the first main body when viewed along the front-rear direction, and the yoke is at least partially overlapped with the specific region when viewed along the front-rear direction. The second main body part on which the yoke is arranged is configured to flow current in the specific area, and the fixing part has a protrusion provided on the second main body part or the second main body part. 2. the second contact included in the main body; and a contact part provided on the yoke and capable of contacting the protrusion.

Description of drawings

FIG. 1 is a perspective view of the electromagnetic relay according to the first embodiment viewed from a first obliquely above.

2 is a perspective view of the electromagnetic relay according to the first embodiment viewed from a second obliquely upward direction.

3 is a view showing the electromagnetic relay according to the first embodiment, and is an exploded perspective view of a state in which a cover is removed, viewed from a first obliquely upward direction.

4 is a view showing the electromagnetic relay according to the first embodiment, and is an exploded perspective view of a state in which a cover is removed, viewed from a second obliquely upward direction.

5 is a plan view showing components other than the cover of the electromagnetic relay according to the first embodiment.

6 is an exploded perspective view of members other than the cover of the electromagnetic relay according to the first embodiment viewed from a first obliquely upward direction.

7 is an exploded perspective view of members other than the cover of the electromagnetic relay of the first embodiment viewed from a second obliquely upward direction.

8 is an exploded perspective view of the electromagnet device included in the electromagnetic relay according to the first embodiment viewed from a first obliquely above.

9 is an exploded perspective view of a moving member, a movable portion, and a movable contact portion included in the electromagnetic relay according to the first embodiment viewed from a first obliquely upward direction.

10 is an exploded perspective view of a moving member, a movable portion, and a movable contact portion included in the electromagnetic relay according to the first embodiment viewed from a second obliquely upward direction.

11 is an exploded perspective view of an auxiliary contact portion included in the electromagnetic relay according to the first embodiment viewed from a first obliquely upward direction.

FIG. 12 is a diagram illustrating contact separation between the contact portion and the auxiliary contact portion according to the first embodiment, and is a perspective view illustrating a state in which the contact portion and the auxiliary contact portion are in a second position.

FIG. 13 is a diagram illustrating contact separation between the contact portion and the auxiliary contact portion according to the first embodiment, and is a perspective view illustrating a state where the contact portion and the auxiliary contact portion are at a first position.

Fig. 14 is a view showing contact separation between the contact part and the auxiliary contact part in the first embodiment, and is a vertical cross-sectional view showing a state where the contact part and the auxiliary contact part are in the second position.

Fig. 15 is a view showing contact separation between the contact part and the auxiliary contact part in the first embodiment, and is a vertical cross-sectional view showing a state where the contact part and the auxiliary contact part are in the first position.

Fig. 16 is a perspective view showing the inside of the cover of the first embodiment.

Fig. 17 is a back view showing the cover of the first embodiment.

18 is a perspective view of the fixed contact portion of the first embodiment viewed from a first obliquely upward direction.

19 is a perspective view of the fixed contact portion of the first embodiment viewed from a second obliquely upward direction.

Fig. 20 is a front view showing the fixed contact portion of the first embodiment.

Fig. 21 is a rear view showing the fixed contact portion of the first embodiment.

Fig. 22 is a side view showing the fixed contact portion of the first embodiment.

23 is a plan view showing the fixed contact portion of the first embodiment.

FIG. 24 is a perspective view of the contact portion of the first embodiment viewed from a first obliquely upward direction.

Fig. 25 is a side view showing the contact portion of the first embodiment.

26 is a perspective view of a state before a yoke is attached to the movable contactor according to the first embodiment, viewed from a first obliquely above.

27 is a perspective view of the state before the yoke is attached to the movable contactor according to the first embodiment, viewed from the second obliquely above.

28 is a side view showing a state before a yoke is attached to the movable contactor of the first embodiment.

29 is a plan view showing a state in which a yoke is attached to the movable contactor of the first embodiment.

30 is a reverse view showing a state where a yoke is attached to the movable contactor according to the first embodiment.

31 is a front view showing a state in which a yoke is attached to the movable contactor of the first embodiment.

Fig. 32 is a rear view showing a state in which a yoke is attached to the movable contactor of the first embodiment.

33 is a side view showing a state in which a yoke is attached to the movable contactor according to the first embodiment.

FIG. 34 is a diagram illustrating a specific area included in the arrangement surface of the movable contact according to the first embodiment.

FIG. 35 is a diagram illustrating magnetic flux generated when a current flows in one direction through the movable contact of the first embodiment.

FIG. 36 is a diagram illustrating magnetic flux generated when a current in the other direction flows through the movable contact according to the first embodiment.

37 is a diagram showing the fixed contact portion, the movable contact, and the yoke of the first embodiment, and is a plan view showing a state where the contacts are at the first position.

38 is a diagram showing the fixed contact portion, the movable contact, and the yoke of the first embodiment, and is a plan view showing a state where the contacts are at the second position.

FIG. 39 is a diagram illustrating how an arc moves toward a protruding portion in the electromagnetic relay according to the first embodiment.

FIG. 40 is a diagram illustrating how an arc moves toward a protruding portion in the electromagnetic relay according to the first modified example.

FIG. 41 is a perspective view of a state before a yoke is attached to the movable contactor of the second modified example as viewed from the first obliquely above.

Fig. 42 is a perspective view of a state before a yoke is attached to the movable contactor of the second modified example as viewed from the second obliquely above.

43 is a side view showing a state before a yoke is attached to the movable contactor of the second modified example.

Fig. 44 is a reverse view showing a state in which a yoke is attached to the movable contactor of the second modified example.

Fig. 45 is a front view showing a state in which a yoke is attached to the movable contactor of the second modified example.

46 is a rear view showing a state in which a yoke is attached to the movable contactor of the second modified example.

Fig. 47 is a side view showing a state in which a yoke is attached to the movable contactor of the second modified example.

Fig. 48 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.

Fig. 49 is a side view showing a contact portion of a second modified example.

FIG. 50 is a perspective view of a state before a yoke is attached to the movable contactor of the third modification, viewed from the first obliquely above.

Fig. 51 is a perspective view of a state before a yoke is attached to the movable contactor of the third modified example viewed from the second obliquely above.

Fig. 52 is a side view showing a state before a yoke is attached to the movable contactor of the third modified example.

Fig. 53 is a reverse view showing a state in which a yoke is attached to the movable contactor of the third modified example.

Fig. 54 is a front view showing a state in which a yoke is attached to the movable contactor of the third modified example.

Fig. 55 is a rear view showing a state in which a yoke is attached to the movable contactor of the third modified example.

56 is a side view showing a state in which a yoke is attached to the movable contactor according to the third modification.

Fig. 57 is a side view showing a contact part of a third modified example.

Fig. 58 is a view showing the electromagnetic relay according to the second embodiment, and is an exploded perspective view of a state in which the cover is removed, viewed from a second obliquely upward direction.

Fig. 59 is a partially broken cross-sectional view showing the electromagnetic relay of the second embodiment.

Explanation of reference signs

1. Electromagnetic relay; 20. Electromagnet device; 210. Coil; 411. Fixed contact; 411A, first fixed contact; 411B, second fixed contact; Fixed contact side terminal; 412B, second fixed contact side terminal; 4121, front (opposite side); 4122, back (arrangement side); 421, movable contact; 421A, first movable contact; 421B, 2nd movable contact; 4211, second contact member (contact member); 422, movable contact (another body part); 422a, through hole (through hole); 422b, protrusion; 422c, notch ; 4221, front (opposite surface); 4222, back (configuration surface); 4222a, recess; 4223, side (upper surface); 4224, side (lower surface); 4225, end; 4226, movable side protrusion ( protrusion); 53, movable spring (connecting member); 80, yoke; 80b, through hole (opening); 81ba, abutting portion; 82, top wall (arm); 83, bottom wall (arm : 3rd arm); 840, 1st yoke; 841, 1st arm; 850, 2nd yoke; 851, 2nd arm; 860, connecting part; 90, fixed part; D1, 1st main body The shortest distance between the main body and the second main body; D2, the shortest distance between the yoke and another main body independent of the main body equipped with the yoke; I, current; R1, specific area; X, front and rear axes ;Y, width axis; Z, up and down axis.

Detailed ways

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In addition, hereinafter, the vertical axis, the front-rear axis, and the width axis of the electromagnetic relay 1 are defined in a state where the lead-out terminal 414 is drawn out from the case 10 to the lower side of the vertical axis. The vertical axis, the front-back axis, and the width axis are appropriately defined only for describing the respective structures, and do not define the actual arrangement state of the electromagnetic relay 1 . In addition, the vertical axis, the front-rear axis, and the wide axis are imaginary structures, and do not mean that the electromagnetic relay 1 actually has axial portions such as the vertical axis.

Furthermore, the direction in which the fixed contact faces the movable contact is described using any one of "X-axis", "front-rear axis", and "direction extending along the X-axis".

In addition, in the first embodiment, a pair of fixed contacts will be described using any one of "Y axis", "width axis", "longitudinal direction of the movable contact", and "direction extending along the Y axis". The direction in which the arrangement is set. Also, "Z-axis" is used to describe an axis that intersects the X-axis and the Y-axis. In addition, in the second embodiment, the "Z axis" will be described using any one of the "up and down axes", and the axis intersecting the X axis and the Z axis will be described as the Y axis.

In addition, in this embodiment, the axis extending along the Z-axis in the three-dimensional rectangular coordinates becomes the up-down axis, the axis extending along the X-axis becomes the front-rear axis, and the axis extending along the Y-axis becomes the width axis. That is, the axis perpendicular to the front-rear axis is the width axis, and the axis perpendicular to the front-rear axis and the width axis is the up-down axis.

In addition, the lower side of the vertical axis is defined as the first end side of the Z-axis, and the upper side is defined as the second end side of the Z-axis. In addition, the side where the fixed contact is arranged is defined as the front on the front-rear axis, and the side where the movable contact is arranged is defined as the rear on the front-rear axis.

In addition, the same component is included in the following several embodiment and its modification. Therefore, in the following, common reference numerals are assigned to these same constituent elements, and overlapping descriptions are omitted.

In addition, in the present disclosure, terms indicating directions such as "upper", "lower", "left", "right", "front", and "rear" are sometimes used for description, but these terms only indicate relative positional relationships, The disclosure is not intended to be limited thereby. For example, when the electromagnetic relay 1 of the present disclosure is installed to rotate, the direction of the electromagnetic relay 1 in a state of actual use may differ from the direction of the electromagnetic relay 1 described in the present disclosure.

(first embodiment)

As shown in FIGS. 1 and 2 , the electromagnetic relay 1 of the present embodiment includes a hollow box-shaped casing 10 made of a resin material. In this embodiment, the casing 10 has a base 110 and a case 120 covering the base 110 , and has a substantially rectangular parallelepiped outer surface. In addition, in the state where the housing 120 is attached to the base 110 , an internal space S1 is formed in the casing 10 (see FIGS. 14 and 15 ). In addition, the shape of the outer surface of the housing 10 is not limited to a rectangular parallelepiped shape, and may have any shape.

Furthermore, an electromagnet device (drive unit) 20 is arranged rearward on the front-rear axis in the internal space S1 of the housing 10 , and a contact portion 40 is arranged in front of the front-rear axis. In addition, the auxiliary contact portion 60 is arranged behind the front-rear axis and above the vertical axis (second end side) in the internal space S1 of the housing 10 .

Here, in the present embodiment, the contact part 40 is a so-called normally open contact part in which the contact is open in the initial state, and the auxiliary contact part 60 is a contact part in which the contact is closed in the initial state. The so-called normally closed contact part. Alternatively, the contact part 40 may be a so-called normally closed contact part in which the contact is closed in the initial state, and the auxiliary contact part 60 may be a so-called normally open contact part in which the contact is open in the initial state. type of contacts.

The base 110 includes a substantially rectangular plate-shaped base portion 111 extending along a substantially horizontal plane (a plane intersecting the Z axis: XY plane), and a peripheral wall 112 ( Refer to Figures 3 to 7).

A stepped portion is formed on the opening peripheral edge of the upper end side of the peripheral wall 112 , and the outer circumference is smaller than that of the lower end side. In addition, a pair of protrusions 112 a are arranged along the width axis (direction extending left and right) on the front and rear surfaces of the peripheral wall 112 above the stepped portion.

On the other hand, the housing 120 has a substantially box shape opened downward, and is attached to the base 110 from above.

The casing 120 includes a substantially rectangular plate-shaped top wall 121 extending along a substantially horizontal plane (a plane intersecting the Z axis: XY plane), and a peripheral wall 122 extending from the peripheral edge of the top wall 121 to the bottom of the vertical axis (first end). (Refer to Figures 3 to 5).

The peripheral wall 122 includes a front wall 1221 located in front of the front-rear axis and extending along the width axis and the up-down axis. In addition, the peripheral wall 122 includes a rear wall 1222 located rearward of the front-rear axis and extending along the width axis and the up-down axis. In addition, the peripheral wall 122 includes a pair of side walls 1223 provided continuously with the front wall 1221 and the rear wall 1222 on both sides of the width axis and extending along the front-rear axis and the up-down axis.

Moreover, at the respective lower parts of the front wall 1221 and the rear wall 1222, there are protrusions for the base 110 when the case 120 is mounted on the base 110, arranged along the width axis (direction extending left and right) (arranged along the width axis). A pair of through holes 122a into which the part 112a is inserted.

In addition, in the present embodiment, the base 110 includes a first side wall 131 that is continuously provided to stand upward from the bottom surface 111 a of the base portion 111 and extends along the width axis. Furthermore, the base 110 includes a pair of second side walls 132 continuously provided from both ends of the width axis of the first side wall 131 toward the rear of the front and rear axes. The pair of second side walls 132 are also extended to stand upward from the bottom surface 111 a of the base portion 111 . Moreover, the yoke 240 of the electromagnet device 20 is held by the first side wall 131 and a pair of second side walls 132 extending upward from the bottom surface 111a of the base portion 111, and three sides of the side surface 210a surrounding the coil 210 are held. direction (at least locally).

In this way, in the present embodiment, the electromagnet device 20 is arranged at a position rearward of the first side wall 131 . Furthermore, the contact part 40 is arrange|positioned ahead of the 1st side wall 131 (refer FIG. 2-FIG. 4). That is, in the present embodiment, the electromagnet device 20 and the contact part 40 are arranged in the interior space S1 in a state of being partitioned front and rear by the first side wall 131 .

Further, a protruding wall 113 is formed at a position forward of the first side wall 131 of the base 110 , and the protruding wall 113 ensures a creeping distance between a pair of fixed contact portions 410 , 410 to be described later.

Further, a pad 114 is formed on the base 110 to provide a gap between the base 110 and the printed board when the electromagnetic relay 1 is placed on a printed board not shown.

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

As the coil 210, for example, a wire can be used. In the present embodiment, the coil 210 is disposed in the internal space S1 of the housing 10 so as to extend axially along the vertical axis with the base 110 positioned below the housing 120 .

Furthermore, the bobbin 220 is formed of resin as an insulating material, and a cylindrical tubular portion 221 extending along the vertical axis (Z axis: third axis: axial direction of the coil) is formed at the center of the bobbin 220 . . Further, a through hole 2211 penetrating up and down is formed inside the cylindrical portion 221 .

In addition, the bobbin 220 includes a substantially rectangular upper flange portion (upper flange portion) 222 provided continuously with the upper end of the cylindrical portion 221 and protruding radially outward of the cylindrical portion 221 . The coil 210 is wound on the surface. Furthermore, the bobbin 220 includes a substantially rectangular lower flange portion (lower flange portion) 223 provided continuously from the lower end of the cylindrical portion 221 and protruding radially outward of the cylindrical portion 221 .

Furthermore, in the present embodiment, an upper auxiliary contact holding portion 2221 for holding the auxiliary contact portion 60 is formed on the upper flange portion 222 . The upper auxiliary contact holding portion 2221 is respectively formed on both ends of the width axis of the rear end portion of the front and rear shafts of the upper flange portion 222 . In addition, each upper side auxiliary contact holding part 2221 is formed with a press-in opening 2221a (refer to FIGS. 8). Further, around the press-fit opening 2221a of the upper auxiliary contact holder 2221, a restricting wall 2221b for restricting detachment and rotation of the press-fit pieces 6141a and 6241a is formed (see FIGS. 6 to 8 ).

On the other hand, a lower auxiliary contact holding portion 2231 for holding the auxiliary contact portion 60 is formed on the lower flange portion 223 . In this embodiment, the lower flange portion 223 is formed such that the rear end side of the front-rear axis is wider than the front end side, and lower auxiliary contacts are respectively formed at both ends of the width axis on the front end side of the wide portion. Point holding part 2231. In addition, each lower side auxiliary contact holding part 2231 is formed with a press-in opening 2231a (refer to FIGS. 8). Further, a restriction wall 2231b is formed around the press-fit opening 2231a of the lower auxiliary contact holding portion 2231 (see FIGS. 6 to 8 ) for restricting detachment and rotation of the press-fit pieces 6143a and 6243a.

Furthermore, the electromagnet device 20 includes an iron core 230 inserted into a through-hole 2211 formed in the cylindrical portion 221 of the bobbin 220 and magnetized (magnetic flux passes) by the coil 210 energized. Furthermore, the iron core 230 is arranged inside the coil 210 .

The iron core 230 includes a substantially cylindrical shaft portion 231 extending along the vertical axis and a substantially cylindrical head portion 232 formed to have a diameter larger than that of the shaft portion 231 and provided continuously from the upper end of the shaft portion 231 (see FIG. 8 ). .

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

As described above, the yoke 240 is supported by the first side wall 131 and a pair of second side walls 132 extending upward from the bottom surface 111a of the base portion 111 (see FIGS. 3 and 4 ). Furthermore, a pair of protruding parts (extending parts) 2411 protruding upward are formed at both ends of the width axis of the vertical wall part (rising part) 241 of the yoke 240, and between the pair of protruding parts (extending parts) 2411 An armature 310 is arranged between them.

Furthermore, the electromagnet device 20 includes a pair of coil terminals 250 to which both ends of the coil 210 are respectively connected, and the electromagnet device 20 is driven by energizing the coil 210 through the pair of coil terminals 250 . In the present embodiment, the coil terminal 250 is fixed to the bobbin 220 in a state where the tip (connection piece) 251 protrudes from the case 10 to the lower side (outside: first end side) of the vertical axis. Specifically, the coil terminals 250 are respectively held in a pair of coil terminal holding grooves 223a (see FIG. 8 ) formed in a pair of extending portions 2232 .

Then, the moving member 30 is moved by switching the driving state of the electromagnet device 20 .

In the present embodiment, the moving member 30 includes an armature 310 disposed so as to face the head portion 232 of the iron core 230 along the vertical axis, and a hinge spring 320 mounted across the armature 310 and the yoke 240 .

The armature 310 is formed of a conductive metal, and is disposed so as to be able to swing along a vertical axis with respect to the head portion 232 of the iron core 230 according to excitation and de-excitation of the coil 210 .

In this embodiment, the armature 310 includes a horizontal wall portion 311 facing the head portion 232 of the iron core 230 along the vertical axis and a vertical wall portion 311 extending downward from the front end of the front-rear axis of the horizontal wall portion 311 . The wall portion 312 (see FIGS. 9 and 10 ).

Furthermore, the horizontal wall portion 311 of the armature 310 is attached to the upper end of the vertical wall portion 241 of the yoke 240 so as to be able to swing along the vertical axis, and the armature 310 can swing along the vertical axis centering on the portion supported by the yoke 240 . turn.

Specifically, notches 3111 are respectively formed at both ends of the width axis of the front end portion of the front and rear axes of the horizontal wall portion 311 of the armature 310 . Then, the armature 310 is supported by the yoke 240 by inserting the protruding portion (extended portion) 2411 of the yoke 240 into the notch 3111 . Thus, in the present embodiment, the notch 3111 serves as a portion of the armature 310 supported by the yoke 240 .

Furthermore, in the present embodiment, a through-hole 313 penetrating up and down is formed at the tip of the armature 310 on the front-rear axis. Furthermore, the hinge spring 320 is inserted across the armature 310 and the yoke 240 while being inserted into the through hole 313 . At this time, the armature 310 is biased by the hinge spring 320 in a direction in which the horizontal wall portion 311 separates from the head portion 232 of the iron core 230 .

Then, when the coil 210 is energized, the armature 310 is rotated so that the horizontal wall portion 311 approaches the head portion 232 of the iron core 230 . Specifically, by energizing the coil 210 , the horizontal wall portion 311 of the armature 310 is attracted by the head portion 232 of the core 230 , and the armature 310 is rotated so that the horizontal wall portion 311 approaches the head portion 232 of the core 230 . That is, when the coil 210 is energized through the pair of coil terminals 250 , the horizontal wall portion 311 of the armature 310 rotates downward on the vertical axis. At this time, the vertical wall portion 312 provided continuously with the horizontal wall portion 311 rotates forwardly of the front-rear axis.

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

In the present embodiment, the swing range of the armature 310 is set to an initial position where the horizontal wall portion 311 is arranged upward with a predetermined gap from the head portion 232 of the iron core 230 and the horizontal wall portion 311 is in contact with the head portion of the iron core 230 . Between the abutting positions of the part 232.

Therefore, in this embodiment, when the coil 210 is energized, the armature 310 moves to the abutment position where the horizontal wall portion 311 abuts against the head 232 of the iron core 230, and when the energization to the coil 210 is stopped, the armature 310 moves to the Under the action of the applied force of the hinge spring 320, it returns to the initial position.

In this way, the armature 310 of this embodiment is disposed opposite to the head 232 of the iron core 230 with a predetermined gap therebetween when the coil 210 is not energized, and is attracted toward the head 232 of the iron core 230 when the coil 210 is energized. way swing.

Moreover, by switching the driving state of the electromagnet device 20 and swinging the armature 310, it is possible to switch the conduction and non-conduction of the fixed contact part 410 and the movable contact part 420 that are paired with each other (having contacts that are in contact with each other) and the movable contact part 420. Pass.

In this embodiment, the contact part 40 which opens and closes a contact according to the ON/OFF of energization of the coil 210 is provided in front of the electromagnet apparatus 20. As shown in FIG.

The contact part 40 includes a fixed contact part 410 and a movable contact part 420 , and the fixed contact part 410 includes a fixed contact 411 and a main body part 412 having the fixed contact 411 . On the other hand, the movable contact part 420 includes a movable contact 421 which is opposed to the fixed contact 411 along the first axis, relatively movable with respect to the fixed contact 411 and capable of contacting the fixed contact 411. contact separation. Furthermore, the movable contact portion 420 includes a movable contact 422 having a movable contact 421 .

In addition, in this disclosure, the main body portion 412 may be expressed as a “main body portion” and the movable contact may be expressed as “another main body portion”.

In addition, in this embodiment, the contact part 40 is provided with only one set of the fixed contact part 410 and the movable contact part 420 paired with each other (refer FIG. 6 and FIG. 7).

In the present embodiment, the set of the fixed contact portion 410 and the movable contact portion 420 having contacts that are in contact with each other is constituted by a pair of fixed contact portions 410 and one movable contact portion 420 .

Specifically, two fixed contact portions 410 having a symmetrical shape with respect to the XZ plane are referred to as a pair of fixed contact portions 410 . Furthermore, the paired two fixed contact portions 410 are fixed to the base 110 (casing 10 ) in a state separated on the width axis.

Here, in the present embodiment, each fixed contact portion 410 includes a main body portion 412 having one fixed contact 411 (see FIGS. 6 and 7 ). Furthermore, by fixing the pair of two fixed contact portions 410 to the base 110 (housing 10 ), the pair of fixed contacts 411 are arranged so as to line up along the width axis.

Thus, in this embodiment, the fixed contact 411 has the 1st fixed contact 411A and the 2nd fixed contact 411B. Further, the main body (first main body) 412 has a first fixed contact side terminal 412A having a first fixed contact 411A and a second fixed contact side terminal 412B. The fixed contact side terminal 412B has a second fixed contact 411B.

In addition, in this embodiment, for convenience, the main body part (first main body part) 412 located on the right side of FIG. 6 is used as the first fixed contact side terminal 412A having the first fixed contact 411A. That is, the first fixed contact-side terminal 412A having the first fixed contact 411A can also be provided as the main body portion (first main body portion) 412 located on the left side in FIG. 6 .

In this embodiment, a predetermined member (first contact member 4111) to be a fixed contact is inserted into the through hole 412a formed in the main body 412 so as to penetrate in the plate thickness direction, and crimping is performed, so that the main body 412 It has a fixed contact 411 (see FIG. 14 and FIG. 15 ). Thus, in the present embodiment, the main body portion 412 of the fixed contact portion 410 functions as a fixed-side contact holder for holding the fixed contact 411 .

In addition, the formation of the fixed contact 411 on the main body portion 412 of the fixed contact portion 410 is not necessarily performed by caulking, and can be performed by various methods. For example, it is also possible to make the protruding part of the main body part 412 function as a fixed contact by applying pin processing to the main body part 412 . In addition, a part of the flat surface of the main body 412 can also function as a fixed contact by setting the movable contact 421 in contact with a part of the flat surface of the main body 412 .

In addition, the fixed contact part 410 is provided with a lead terminal 414 drawn out to the lower side (outside) of the base 110 (casing 10 ) when the fixed contact part 410 is fixed to the base 110 (casing 10 ). Furthermore, the fixed contact portion 410 includes a terminal connection portion 413 connected to the lead-out terminal 414 below the vertical axis (first end side) with respect to the fixed contact 411 . Furthermore, the fixed contact portion 410 is fixed to the base 110 (casing 10 ) in a state where the tip (connecting portion) of the lead-out terminal 414 protrudes below (outside) the base 110 (casing 10 ).

In the present embodiment, a through-hole 115 penetrating up and down is formed in the base 110 . Then, the top end (connection portion: lower end) of the lead-out terminal 414 is inserted into the through-hole 115 from above. In addition, an inner press-fit groove 116 and an outer press-fit groove 117 are formed in the base 110 , and the fixed contact portion 410 is press-fitted into the inner press-fit groove 116 and the outer press-fit groove 117 . In this way, the fixed contact portion 410 is fixed to the base 110 (housing 10 ) in a state where the top end (connection portion: lower end) of the lead-out terminal 414 protrudes below (outside) the base 110 (see FIG. 14 and FIG. 14 ). Figure 15). In addition, the fixed contact portion 410 may be fixed to the base 110 (casing 10 ) with an adhesive or the like.

At this time, the fixed contact portion 410 is fixed to the base 110 (casing 10 ) in a state where the fixed contact 411 faces rearward of the front-rear axis. That is, the fixed contact part 410 is fixed to the rear side of the main body part 412 with the surface (front: opposite surface: surface on the side opposite to the movable contact part 420 ) 410a on which the fixed contact 411 is formed facing the rear. Base 110 (casing 10 ).

In addition, the fixed contact 411 , the main body portion 412 , the terminal connection portion 413 , and the lead-out terminal 414 can be formed of conductive materials such as silver-based materials and copper-based materials, for example.

Thus, in this embodiment, the two fixed contacts 411 are arranged along the Y axis which is a direction perpendicular to (intersecting) the direction in which the fixed contacts 411 and the movable contacts 421 move relative to each other. Furthermore, one of the two main body parts 412 (first fixed contact side terminal 412A) has one fixed contact (first fixed contact 411A) 411 . In addition, the other main body portion (second fixed contact side terminal 412B) has another fixed contact (second fixed contact 411B) 411 .

On the other hand, one movable contact portion 420 includes one movable contact (second body portion) 422 having a pair of movable contacts (second contact) arranged along the width axis. point) 421 (see FIGS. 9 and 10).

Thus, in this embodiment, the second main body is the movable contact 422, and the movable contact 421 provided on the movable contact 422 has the first movable contacts 421A arranged in a row along the second axis. and the second movable contact 421B. That is, the movable contact 421 has a first movable contact 421A which is in contact with and separated from the first fixed contact 411A, and a second movable contact 421B which is in contact with and separated from the second fixed contact 411B.

In this embodiment, a predetermined member to be a movable contact is inserted into through holes 422a formed on both sides in the longitudinal direction of a substantially rectangular plate-shaped movable contact 422 so as to pass through along the plate thickness direction (No. 2 contact member 4211), implement riveting. In this way, the movable contact 422 has the movable contact 421 (see FIGS. 14 and 15 ). Thus, in the present embodiment, the movable contact 422 functions as a movable-side contact holder that holds the movable contact 421 .

In addition, forming the movable contact 421 on the movable contact 422 does not necessarily have to be performed by caulking, and can be performed by various methods. For example, it is also possible to make the protruding portion of the movable contact 422 function as a movable contact by subjecting the movable contact 422 to pin processing. In addition, a part of the flat surface of the movable contact 422 can also function as a movable contact by adopting a configuration in which a part of the flat surface of the movable contact 422 is brought into contact with the fixed contact 411 .

In addition, one movable contact part 420 is located behind the front-rear axis than the pair of two fixed contact parts 410 in a state where the plate thickness direction substantially coincides with the front-rear axis and the longitudinal direction substantially coincides with the width axis. The way the location is configured. At this time, the movable contact part 420 is arranged in a state where the movable contact 421 and the fixed contact 411 face each other on the front-rear axis. Specifically, the movable contact 422 includes a movable contact 421 formed on the first end side of the width axis and a fixed contact 411 disposed on the fixed contact portion 410 on the first end side of the width axis along the front-rear axis. Relative way to configure. Similarly, the movable contact 422 has a movable contact 421 formed on the second end side of the wide axis and a fixed contact 411 disposed on the fixed contact portion 410 on the second end side of the wide axis facing each other along the front-rear axis. mode configuration.

In this way, one movable contact (first movable contact 421A) 421 contacts and separates from one of the two fixed contacts 411 (first fixed contact 411A) 411 . Furthermore, the other movable contact (second movable contact 421B) 421 is in contact with and separated from the other fixed contact (second fixed contact 411B) 411 . Furthermore, one movable contact 422 has two movable contacts 421 .

In addition, in this embodiment, for convenience, the movable contact (first movable contact 421A) 421 located on the left side of FIG. Point 421A. That is, the first movable contact 421A that is in contact with and separated from the first fixed contact 411A can also be the movable contact 421 located on the right side in FIG. 7 .

The movable contact 421 and the movable contact 422 can also be formed of conductive materials such as silver-based materials and copper-based materials, for example.

Furthermore, the group consisting of the pair of fixed contact portions 410 and one movable contact portion 420 configured in this way is accommodated in the internal space S1 at a position forward of the front-rear axis from the first side wall 131 (see Figure 12 to Figure 15).

Here, the movable contact portion 420 is arranged so as to be relatively swingable along the front-rear axis with respect to the pair of fixed contact portions 410 .

In this embodiment, the contact part 40 is provided continuously with the armature 310 via the movable part 50 . Further, by swinging the movable part 50 along the front-rear axis as the armature 310 swings, the movable contact part 420 swings along the front-rear axis in conjunction with the movement of the movable part 50 . That is, by holding the movable contact part 420 on the movable part 50 , the movable contact part 420 relatively swings along the front-rear axis with respect to the pair of fixed contact parts 410 .

In this embodiment, the movable part 50 includes a holding part 51 formed of an insulating resin material, and a through hole 511 through which the vertical wall part 312 of the armature 310 is inserted and held is formed in the upper part. Furthermore, the movable portion 50 includes a movable plate 52 provided continuously from the lower portion of the holding portion 51 , and a movable spring (connection member) 53 that connects the movable plate 52 and the movable contact 422 .

In the present embodiment, a through hole 521 penetrating along the plate thickness direction is formed on the upper portion of the vertical axis of the movable plate 52 . And, in the state where the upper end of the movable plate 52 is inserted into the through hole not shown formed in the lower end of the holding part 51, the protrusion formed in the through hole not shown in the holding part 51 is inserted into the through hole. hole 521 , so that the movable plate 52 is held by the holding portion 51 .

In addition, a rearward protrusion 522 is formed at the center of the vertical axis of the movable plate 52 , and an upper through hole 531 is formed at the upper portion of the movable spring 53 along the plate thickness direction. Then, the movable spring 53 is held by the movable plate 52 by inserting the protrusion 522 of the movable plate 52 into the upper through-hole 531 of the movable spring 53 .

Further, a lower through hole 532 penetrating in the plate thickness direction is formed below the vertical axis of the movable spring 53 , and a protrusion 422 b protruding rearward is formed at the center of the width axis of the movable contact 422 . In addition, notch portions 422c are formed on both sides of the vertical axis at the central portion of the width axis of the movable contactor 422 . Furthermore, the movable contactor 422 is held by the movable spring 53 by inserting the protrusion 422 b of the movable contactor 422 into the lower through-hole 532 of the movable spring 53 .

In this way, the contact portion 40 is provided continuously with the armature 310 via the movable portion 50 .

Furthermore, with such a configuration, the movable contact portion 420 relatively swings along the front-rear axis with respect to the pair of fixed contact portions 410 as the armature 310 swings. Therefore, movable contact 421 swings so as to draw an arc centered on the upper end of vertical wall portion 312 .

Furthermore, in the present embodiment, the auxiliary contact portion 60 is arranged in the internal space S1 of the housing 10 in addition to the contact portion 40 . The auxiliary contact part 60 is arranged in the interior space S1 in a state where auxiliary contacts (auxiliary fixed contact 611 and auxiliary movable contact 621 ) are present at a position rearward of the front-rear axis and 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 part 60 are arranged on the second end side (rear side) of the front-rear axis than the axis of the coil 210, and are arranged in the axial direction. The coil 210 is arranged to extend along the vertical axis, and the top end (connecting piece) 251 of the coil terminal 250 is arranged on the upper end side of the coil 210 in the axial direction ( 2nd end side).

The auxiliary contact part 60 includes an auxiliary fixed contact part 610 and an auxiliary movable contact part 620, and the auxiliary fixed contact part 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 part 620 includes an auxiliary movable contact 621 which is movable relative to the auxiliary fixed contact 611 and capable of contacting and separating from the auxiliary fixed contact 611 , and a second auxiliary movable contact 621 having the auxiliary movable contact 621 . Contact terminal 622 .

In addition, in the present embodiment, the auxiliary contact part 60 includes only one set of auxiliary fixed contact part 610 and auxiliary movable contact part 620 (refer to FIG. 6 and Figure 7).

In the present embodiment, a set of auxiliary fixed contact portion 610 and auxiliary movable contact portion 620 having auxiliary contacts that are in contact with each other is composed of one auxiliary fixed contact portion 610 and one auxiliary movable contact portion 620 . In addition, one auxiliary fixed contact 611 is formed on one auxiliary fixed contact portion 610 , and only one auxiliary movable contact 621 that is in contact with and separated from one auxiliary fixed contact 611 is formed on one auxiliary movable contact portion 620 .

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

Furthermore, the first auxiliary contact terminal 612 includes an upper piece 613 extending along the width axis on the upper end side of the coil 210 . Furthermore, an auxiliary fixed contact 611 is formed on the upper sheet 613 . In this embodiment, the upper sheet 613 has the auxiliary fixed contact 611 by inserting a predetermined member to be the auxiliary fixed contact into the through hole 613a formed in the upper piece 613 so as to pass through in the plate thickness direction, and performing caulking. (Refer to Figure 11). In this manner, in the present embodiment, the upper piece 613 functions as a fixed-side auxiliary contact holder that holds the auxiliary fixed contact 611 .

In addition, forming the auxiliary fixed contact 611 on the upper sheet 613 does not necessarily have to be performed by caulking, and can be performed by various methods. For example, it is also possible to make the protruding portion of the upper sheet 613 function as an auxiliary fixed contact by applying pin processing to the upper sheet 613 . In addition, a part of the flat surface of the upper sheet 613 can also function as an auxiliary fixed contact by setting the auxiliary movable contact 621 in contact with a part of the flat surface of the upper sheet 613 . In addition, a plurality of auxiliary fixed contacts 611 may be provided on the upper sheet 613 (first auxiliary contact terminal 612 ).

Furthermore, the first auxiliary contact terminal 612 includes a side piece 614 provided continuously to the end of the upper piece 613 on the outside of the width axis, extending along the XZ plane, and vertically elongated. In the present embodiment, the side piece 614 is connected to the upper piece 613 so as to extend downward from the upper piece 613 on the vertical axis, and is arranged lateral to the width axis of the coil 210 .

Furthermore, the first auxiliary contact terminal 612 includes a connection piece 615 extending from the lower end of the side piece 614 so as to protrude downward. The connection piece 615 is formed so as to protrude downward (outward) of the base 110 while holding the side piece 614 on the bobbin 220 disposed on the base 110 .

In addition, the side piece 614 includes a first side piece 6141 provided continuously from the outer end of the width axis of the upper piece 613 and a connecting portion 6142 extending from the lower end of the first side piece 6141 toward the front of the front-rear axis. Furthermore, the side piece 614 includes a second side piece 6143 extending from the lower portion of the front end of the connecting portion 6142 toward the lower side of the vertical axis. Furthermore, the connecting piece 615 is connected to the lower end of the second side piece 6143 so as to protrude downward (outward) from the housing 10 . In the present embodiment, the tip 6151 of the connection piece 615 is located on the lower side (first end side) of the vertical axis than the coil 210 .

Thus, in the present embodiment, the side sheet 614 includes the first side sheet 6141 connected to the upper sheet 613, connected to the connecting sheet 615, and disposed at a position deviated forward from the first side sheet 6141 on the front-rear axis. The second side piece 6143 and the connecting portion 6142 connecting the first side piece 6141 and the second side piece 6143 have a shape bent into a crank shape when viewed along the width axis.

Furthermore, in this embodiment, the auxiliary fixed contact portion 610 is held by the bobbin 220 .

Specifically, press-fit pieces 6141a protruding toward the inner side of the width axis are respectively provided at both ends of the front and rear axes of the first side piece 6141 . Then, the pair of press-fit pieces 6141 a are press-fit into the pair of press-fit openings 2221 a of the upper auxiliary contact holding portion 2221 formed in the upper flange portion 222 .

In addition, a press-fit piece 6143a protruding toward the inner side of the width axis is provided at the lower end of the second side piece 6143 on the front-rear axis front end side. Then, the press-fit piece 6143 a is press-fit into the press-fit opening 2231 a of the lower auxiliary contact holding part 2231 formed in the lower flange part 223 .

Thus, by pressing the pair of press-fit pieces 6141a into the pair of press-fit openings 2221a and press-fit the press-fit pieces 6143a into the press-fit openings 2231a, the auxiliary fixed contact portion 610 is held by the bobbin 220 .

In addition, in the present embodiment, the auxiliary fixed contact portion 610 is held by the bobbin 220 in a state where the auxiliary fixed contact 611 is directed downward on the vertical axis. That is, the auxiliary fixed contact part 610 is held by the coil in a state where the surface of the upper piece 613 on which the auxiliary fixed contact 611 is formed (lower surface: the surface opposite to the auxiliary movable contact 621 ) faces downward. Skeleton 220.

In addition, the auxiliary fixed contact 611 and the first auxiliary contact terminal 612 can be formed of conductive materials such as silver-based materials and copper-based materials, for example.

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

Furthermore, the second auxiliary contact terminal 622 includes an upper piece 623 extending along the width axis on the upper end side of the coil 210 . Furthermore, the auxiliary movable contact 621 is formed on the upper piece 623 .

In the present embodiment, the upper piece 623 includes a substantially rectangular plate-shaped body portion 6231 and a leaf spring 6232 that extends in the horizontal direction and is elongated in the width axis. Furthermore, the leaf spring 6232 has the auxiliary movable contact 621 .

In the present embodiment, the leaf spring 6232 has a shape bent into a crank shape so that the tip (the inner end portion of the Y-axis) is positioned downward. Then, by inserting a predetermined member to be an auxiliary movable contact into a through hole 6232a formed at the tip of the leaf spring 6232 so as to pass through in the plate thickness direction, and performing crimping, the leaf spring 6232 has an auxiliary movable contact. 621 (refer to FIG. 11 ). Thus, in the present embodiment, the leaf spring 6232 functions as a movable-side auxiliary contact holder for holding the auxiliary movable contact 621 .

In addition, forming the auxiliary movable contact 621 on the leaf spring 6232 does not necessarily have to be performed by caulking, and can be performed by various methods. For example, it is also possible to function as an auxiliary movable contact at a portion protruding by performing pin processing on the leaf spring 6232 . In addition, a part of the flat surface of the leaf spring 6232 can also function as an auxiliary movable contact by setting the auxiliary movable contact 621 in contact with a part of the flat surface of the leaf spring 6232 . In addition, a plurality of auxiliary movable contacts 621 may be provided on the plate spring 6232 (the upper piece 623 : the second auxiliary contact terminal 622 ).

In addition, the main body portion 6231 is provided continuously with the end portion outside the width axis of the leaf spring 6232 . Specifically, a pair of through-holes 6232b are formed in an outer end portion of the leaf spring 6232 outside the width axis so as to line up along the front-rear axis. In addition, a pair of protrusions 6231a are formed on the main body portion 6231 so as to be aligned along the front-rear axis. Furthermore, the leaf spring 6232 is continuously provided with the main body part 6231 by crimping in the state which inserted a pair of protrusion 6231a into a pair of through-hole 6232b, respectively.

In addition, the second auxiliary contact terminal 622 includes a side piece 624 that is provided continuously with the end portion outside the width axis of the main body 6231 (upper piece 623 ), extends along the XZ plane, and is elongated up and down. . In the present embodiment, the side piece 624 is connected to the main body portion 6231 (upper piece 623 ) so as to extend from the main body portion 6231 (upper piece 623 ) downward on the vertical axis, and is arranged lateral to the width axis of the coil 210 . .

In addition, the second auxiliary contact terminal 622 includes a connection piece 625 extending from the lower end of the side piece 624 so as to protrude downward. The connection piece 625 is formed so as to protrude downward (outward) of the base 110 while holding the side piece 624 on the bobbin 220 disposed on the base 110 .

In addition, the side piece 624 includes a first side piece 6241 provided continuously with the outer end of the width axis of the main body portion 6231 (upper piece 623 ), and a side piece extending from the lower end of the first side piece 6241 toward the front of the front-rear axis. The connection part 6242. Furthermore, the side piece 624 includes a second side piece 6243 extending from the lower portion of the front end of the connecting portion 6242 toward the lower side of the vertical axis. Furthermore, the connection piece 625 is connected to the lower end of the second side piece 6243 so as to protrude downward (outward) from the housing 10 . In the present embodiment, the tip 6251 of the connection piece 625 is located on the lower side (first end side) of the vertical axis than the coil 210 .

Thus, in this embodiment, the side piece 624 includes the first side piece 6241 connected to the main body 6231 (upper piece 623 ), connected to the connection piece 625 and arranged on the front-rear axis relative to the first side piece 6241 . The second side piece 6243 at a position deviated from the front side and the connecting portion 6242 that connects the first side piece 6241 and the second side piece 6243 are bent in a crank shape when viewed along the width axis. .

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

Specifically, the press-fit pieces 6241a protruding toward the inside of the width axis are respectively provided at both ends of the front and rear axes of the first side piece 6241 . Then, the pair of press-fit pieces 6241 a are press-fit into the pair of press-fit openings 2221 a of the upper auxiliary contact holding portion 2221 formed in the upper flange portion 222 .

In addition, a press-fit piece 6243a protruding toward the inner side of the width axis is provided at the lower end of the second side piece 6243 on the front-rear axis front end side. Then, the press-fit piece 6243 a is press-fit into the press-fit opening 2231 a of the lower auxiliary contact holding part 2231 formed in the lower flange part 223 .

Thus, by pressing the pair of press-fit pieces 6241a into the pair of press-fit openings 2221a and pressing the press-fit pieces 6243a into the press-fit openings 2231a, the auxiliary movable contact portion 620 is held by the bobbin 220 .

In addition, in the present embodiment, the auxiliary movable contact part 620 is held by the bobbin 220 in a state where the auxiliary movable contact 621 is directed upward on the vertical axis. That is, the auxiliary movable contact portion 620 is held in a state where the surface of the plate spring 6232 on which the auxiliary movable contact 621 is formed (upper surface: the surface on the side opposite to the auxiliary fixed contact 611 ) faces upward. Coil bobbin 220 .

In addition, the auxiliary movable contact 621 and the second auxiliary contact terminal 622 can be formed of conductive materials such as silver-based materials and copper-based materials, for example.

In addition, a group consisting of one auxiliary fixed contact portion 610 and one auxiliary movable contact portion 620 configured in this way is housed in the internal space S1 behind the first side wall 131 on the front-rear axis and is a coil. The position on the upper end side of 210 (see FIGS. 12 to 15 ). Furthermore, the auxiliary fixed contact 611 and the auxiliary movable contact 621 are disposed above the vertical axis than the head portion 232 of the iron core 230 .

Here, the auxiliary movable contact portion 620 is arranged such that the leaf spring 6232 can relatively swing along the vertical axis with respect to the auxiliary fixed contact portion 610 . In the present embodiment, the leaf spring 6232 can relatively swing along the vertical axis with respect to the auxiliary fixed contact portion 610 by the auxiliary driving portion 70 . That is, by switching the driving state of the electromagnet device 20, the auxiliary driving part 70 is swung, and the auxiliary fixed contact part 610 and the auxiliary movable contact part 620 that are paired with each other (having auxiliary contacts that are in contact with each other) can be switched. conduction, non-conduction.

In the present embodiment, the auxiliary drive unit 70 is formed of an insulating resin material, and is held by the horizontal wall portion 311 of the armature 310 . Further, the auxiliary drive unit 70 is oscillated along the vertical axis in accordance with the oscillating movement of the armature 310 . In this way, the leaf spring 6232 swings along the vertical axis as the auxiliary drive unit 70 swings along the vertical axis.

The auxiliary drive portion 70 includes a main body portion 71 and a fixing portion 72 continuously provided to protrude from the main body portion 71 toward the outside of the width axis and held by the horizontal wall portion 311 of the armature 310 . Further, the auxiliary drive unit 70 includes a pressing portion 73 that is continuously provided to protrude from the main body portion 71 toward the rear side of the front-rear axle, and presses the leaf spring 6232 upward.

In addition, in the present embodiment, the fixed portion 72 includes an arm portion 721 protruding toward the outside of the width axis, and is provided continuously from the end portion of the arm portion 721 outside the width axis toward the bottom of the vertical axis (first end side). The hook portion 722.

Further, a held portion 3112 for holding the auxiliary driving portion 70 is formed at the rear portion of the front-rear axis of the horizontal wall portion 311 of the armature 310 . Then, by hooking the pair of hook portions 722 to the held portion 3112 , the auxiliary driving portion 70 is held by the horizontal wall portion 311 of the armature 310 .

In this way, in this embodiment, by swinging the auxiliary driving unit 70 in conjunction with the swinging of the armature 310, the conduction of the auxiliary fixed contact portion 610 and the auxiliary movable contact portion 620 having auxiliary contacts that are in contact with each other and separated from each other is switched. pass, non-conduction. That is, the contact part 40 is contacted and separated by one end of the armature 310 , and the auxiliary contact part 60 is contacted and separated by the other end of the armature 310 .

With such a configuration, the auxiliary movable contact portion 620 relatively swings along the vertical axis with respect to the auxiliary fixed contact portion 610 as the armature 310 swings. At this time, the auxiliary movable contact 621 swings so as to draw an arc centered on the end portion outside the width axis of the leaf spring 6232 .

In addition, in the present embodiment, when the leaf spring 6232 is in a state where the auxiliary movable contact 621 is separated from the auxiliary fixed contact 611 in a natural state, it is connected to the second auxiliary contact terminal 622 held by the bobbin 220 . continuous setting. Then, when the energization to the coil 210 is stopped, the pressing portion 73 of the auxiliary drive unit 70 contacts the plate spring 6232 to push upward, and the auxiliary movable contact 621 is in contact with the auxiliary fixed contact 611. .

On the other hand, when the coil 210 is energized, the rear end side of the horizontal wall portion 311 of the armature 310 rotates downward, and as the rear end side of the horizontal wall portion 311 rotates downward, the auxiliary drive unit 70 rotates to Move below. Then, when the auxiliary driving unit 70 moves downward, the leaf spring 6232 moves downward due to the elastic restoring force, and the auxiliary movable contact 621 is separated from the auxiliary fixed contact 611 .

In addition, the auxiliary driving unit 70 may also use other methods to drive the leaf spring 6232 . As another method of driving the leaf spring 6232 by the auxiliary driving part 70, for example, there is the following method: when the auxiliary driving part 70 is separated from the leaf spring 6232, the auxiliary movable contact 621 and the auxiliary fixed contact are connected under the action of the elastic restoring force of the leaf spring 6232. The contacts 611 come into contact with each other and become conductive, and when the auxiliary drive unit 70 pushes down the leaf spring 6232 , the auxiliary movable contact 621 separates from the auxiliary fixed contact 611 and becomes non-conductive.

In this way, in the present embodiment, the auxiliary contact portion 60 is provided such that the closed state and the open state are opposite to those of the contact portion 40 .

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

First, when the coil 210 is not energized, the horizontal wall portion 311 of the armature 310 moves in a direction to separate from the head portion 232 of the iron core 230 by the elastic force of the hinge spring 320 . At this time, since the vertical wall portion 312 of the armature 310 is located behind the front-rear axis, the movable portion 50 is also located behind the front-rear axis. That is, the movable contact part 420 held by the movable part 50 is separated from the fixed contact part 410 , and the movable contact 421 is separated from the fixed contact 411 (see FIGS. 12 and 14 ).

On the other hand, since the auxiliary driving part 70 also moves in the direction of separating from the head 232 of the iron core 230, the pressing part 73 of the auxiliary driving part 70 presses up the plate spring 6232, and the auxiliary movable contact 621 and the A state where the auxiliary fixed contact 611 is in contact (see FIG. 12 and FIG. 14 ).

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

On the other hand, since the auxiliary driving part 70 also moves toward the head 232 of the iron core 230, the upper pressing part 73 of the auxiliary driving part 70 descends downward to form the auxiliary movable contact 621 from the auxiliary fixed contact 611. separate state. In this way, the electrical connection between the auxiliary fixed contact portion 610 and the auxiliary movable contact portion 620 is released (see FIGS. 13 and 15 ). (Refer to Figure 12 and Figure 14).

And, in this state, when the energization to the coil 210 is stopped, the horizontal wall portion 311 of the armature 310 is rotated upward (the side separated from the iron core 230 ) by the urging force of the hinge spring 320 , and returns to the initial state. Location. Further, as the horizontal wall portion 311 rotates upward, the vertical wall portion 312 rotates rearward, and as the vertical wall portion 312 rotates rearward, the movable portion 50 rotates rearward. As a result, the movable contact 422 held by the movable part 50 rotates rearward in a manner to be separated from the fixed contact part 410 , and the movable contact 421 of the movable contact 422 is separated from the fixed contact of the fixed contact part 410 . 411 apart. In this way, the electrical connection between the pair of fixed contact portions 410 and 410 is released.

On the other hand, since the auxiliary drive unit 70 also moves in the direction away from the head portion 232 of the iron core 230 , the pressing portion 73 of the auxiliary drive unit 70 presses up the leaf spring 6232 to return to the initial position. As a result, the auxiliary movable contact 621 is brought into contact with the auxiliary fixed contact 611 , and the auxiliary fixed contact portion 610 is electrically connected to the auxiliary movable contact portion 620 .

Thus, in this embodiment, when the armature 310 is at the initial position, the movable contact 421 and the fixed contact 411 are separated from each other and the auxiliary movable contact 621 is in contact with the auxiliary fixed contact 611 (see FIG. 12 and Figure 14). On the other hand, when the armature 310 is in the contact position, the movable contact 421 is in contact with the fixed contact 411, and the auxiliary movable contact 621 and the auxiliary fixed contact 611 are separated from each other in the first position (refer to FIG. 13 and FIG. 15).

Therefore, when the coil 210 is not energized, the pair of fixed contact portions 410 , 410 are insulated, and while the coil 210 is energized, the pair of fixed contact portions 410 , 410 are conducted. Thus, in the present embodiment, the movable contact 421 is configured to be relatively reciprocable (rotatable) relative to the fixed contact 411 along the front-rear axis between the first position and the second position.

On the other hand, when the coil 210 is not energized, the auxiliary fixed contact part 610 and the auxiliary movable contact part 620 are insulated, and during the period when the coil 210 is energized, the auxiliary fixed contact part 610 and the auxiliary movable contact are insulated. section 620 turns on. Thus, in this embodiment, the auxiliary movable contact 621 is configured to be relatively reciprocable (rotatable) along the vertical axis with respect to the auxiliary fixed contact 611 between the first position and the second position.

Here, when the movable contact 421 is in the first position in contact with the fixed contact 411 , the current I flows through the movable contact 422 mainly along the longitudinal direction (Y axis).

At this time, for example, as shown in FIG. 35 , when a current I flows from the movable contact 421 on the left side (the near side in FIG. 35 ) toward the movable contact 421 on the right side (the far side in FIG. 35 ). , a magnetic flux B from above to below is generated on the surface 4221 of the movable contact 422 on which the movable contact 421 is formed. In addition, the surface 4221 of the movable contactor 422 on which the movable contact 421 is formed refers to the surface on the side opposite to the fixed contact part 410 , and is sometimes referred to as the front surface 4221 or the opposite surface 4221 hereinafter.

Then, when the energization to the coil 210 is stopped, the opening of the movable contact 421 from the fixed contact 411 (moving from the state of FIG. 37 to the state of FIG. 38 ) starts.

When this disconnection is started, an arc A is generated between the movable contact 421 and the fixed contact 411 at the initial stage of disconnection, and the current conduction state is continued by the arc A (see FIG. 38 ).

At this time, when the current I flows from the movable contact 421 on the right side toward the movable contact 421 on the left side in FIG. 38 (when the current flows in the same direction as in FIG. 35 ), the 421 The current I directed toward the fixed contact 411 flows through the arc A generated between the movable contact 421 and the fixed contact 411 on the left side of FIG. 38 .

On the other hand, current I flowing from fixed contact 411 to movable contact 421 flows through arc A generated between movable contact 421 and fixed contact 411 on the right side of FIG. 38 .

Furthermore, as described above, the magnetic flux B directed downward from above is generated in the space where the arc A exists on the front surface 4221 side of the movable contactor 422 .

Therefore, the arc A generated at the movable contact 421 and the fixed contact 411 on the left side of FIG. The Lorentz force on the side (outside of the Y axis).

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

In addition, the arc A generated at the movable contact 421 and the fixed contact 411 on the right side of FIG. The Lorentz force on the side (outside of the Y axis).

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

Then, the arc A generated in each of the movable contact 421 and the fixed contact 411 is stretched to the outside of the Y-axis and disappears. In this way, the energization between the fixed contact part 410 and the movable contact part 420 is interrupted.

In addition, although not shown in the figure, when the current I flows from the movable contact 421 on the left side to the movable contact 421 on the right side in FIG. 38 (when the current flows in the same direction as in FIG. 36 ), The current I flowing from the fixed contact 411 to the movable contact 421 flows through an arc A generated between the movable contact 421 and the fixed contact 411 on the left side of FIG. 38 .

In addition, the current I flowing from the movable contact 421 to the fixed contact 411 flows through the arc A generated at the movable contact 421 and the fixed contact 411 on the right side of FIG. 38 .

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

Therefore, the arc A generated at the movable contact 421 and the fixed contact 411 on the left side of FIG. Lorentz force on the side (outside of the Y axis).

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

In addition, the arc A generated on the movable contact 421 and the fixed contact 411 on the right side of FIG. Lorentz force on the side (outside of the Y axis).

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

Then, the arc A generated in each of the movable contact 421 and the fixed contact 411 is stretched to the outside of the Y-axis and disappears.

In this way, electromagnetic relay 1 according to the present embodiment is configured such that arc A generated between movable contact 421 and fixed contact 411 is pulled outward along the Y-axis and disappears regardless of the direction of the current.

Therefore, even when an alternating current flows through the contact portion 40 like an AC relay, the arc A generated between the movable contact 421 and the fixed contact 411 can be stretched to the outside of the Y-axis to disappear. .

At this time, the arc generated between the movable contact 421 and the 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 the present embodiment, the space formed between the second side wall 132 and the side wall 1223 of the casing 120 serves as an arc extension space S4 (see FIG. 5 ) for extending the arc.

In addition, when the arc A generated between the movable contact 421 and the fixed contact 411 is extended outward of the width axis, consumable powder or the like may be scattered into the arc extension space S4. At this time, if the space S2 in which the contact part 40 is arranged and the space S3 in which the auxiliary contact part 60 is arranged in the internal space S1 of the housing 10 are connected by a relatively large passage, the auxiliary contact part 60 may receive consumable powder or the like. Impact. In particular, in an electromagnetic relay through which a large current flows, the auxiliary contact portion 60 is largely affected by powder consumption and the like.

Therefore, in the present embodiment, even when a large current flows through the contact portion 40 , it is possible to more reliably suppress a decrease in the contact reliability of the auxiliary contact portion 60 . Specifically, a partition wall 130 is formed to divide the internal space S1 into a contact side space S2 where the contact portion 40 exists and an auxiliary contact side space S3 where the auxiliary contact portion 60 exists. That is, the contact side space S2 and the auxiliary contact side space S3 of the internal space S1 can be defined by the continuous portion of the partition wall 130 .

Furthermore, by providing the partition wall 130 , the contact side space S2 where the contact portion 40 is arranged and the auxiliary contact side space S3 where the auxiliary contact portion 60 is arranged can be communicated through a narrower gap. That is, by providing the partition wall 130 , it is possible to suppress as much as possible that the contact side space S2 and the auxiliary contact side space S3 communicate with each other through a relatively wide gap. In this way, it is possible to more reliably prevent consumable powder or the like generated in the contact portion 40 from entering the auxiliary contact side space S3 where the auxiliary contact portion 60 exists.

In this embodiment, the partition wall 130 includes a first side wall 131 provided continuously with the base 110 so as to extend along the vertical axis on the front side of the front-back axis of the coil 210 .

In addition, the partition wall 130 includes a pair of second side walls 132 respectively disposed on both sides of the width axis and continuously provided with the base 110 so as to extend along the vertical axis.

In this way, in this embodiment, the first side wall 131 and the pair of second side walls 132 for supporting the yoke 240 are also used as the contact side space S2 where the contact portion 40 exists and the auxiliary contact portion 60. The partition wall 130 of the auxiliary contact side space S3 functions.

In addition, the first side wall 131 is provided continuously with the base 110 such that the contact part 40 and the movable part 50 are located on the front side of the front-rear axis, and the auxiliary contact part 60 and the coil 210 are located on the rear side of the front-rear axis.

Furthermore, at least part of the side surface 210 a of the coil 210 is surrounded by the first side wall 131 and the pair of second side walls 132 .

In addition, in this embodiment, the partition wall 130 includes a pair of third side walls 133 arranged in a row along the width axis so as to extend along the vertical axis and along the direction of the second side wall 132 . mode setting (refer to Figure 16 and Figure 17).

In this embodiment, the third side wall 133 is formed inside the casing 120 . Specifically, the third side wall 133 extends from the inner surface of the top wall 121 along the front-rear axis and the vertical axis. In addition, the third side wall 133 is formed such that the rear end of the front-rear axis is in contact with the inner surface of the rear wall 1222 .

Furthermore, the pair of third side walls 133 is formed so as to overlap at least part of the contact periphery of the auxiliary contact portion 60 when viewed from a direction perpendicular to the Z axis. In this way, the arc extension space S4 of the contact side space S2 and the auxiliary contact side space S3 are divided by the third side wall 133 . Furthermore, with the third side wall 133 , it is possible to more reliably prevent consumable powder or the like generated in the contact portion 40 from entering the auxiliary contact side space S3 through the arc extension space S4 .

In addition, in the present embodiment, the contact-side space S2 has a substantially L-shaped space located above the contact portion 40 and viewed along the width axis. This space becomes an armature arrangement space S5 in which the armature 310 is arranged (see FIGS. 14 and 15 ). Furthermore, since the armature 310 is arranged in the armature arrangement space S5 in a state where swing is allowed, a relatively large gap is formed between the armature 310 and the case 120 in the armature arrangement space S5. Therefore, there is a possibility that the armature 310 is misaligned during swinging, and waste powder generated at the contact portion 40 enters the auxiliary contact side space S3 through a relatively large gap formed between the armature 310 and the case 120 .

Therefore, in the present embodiment, the partition wall 130 includes a fourth side wall 134 provided on the housing 120 so as to protrude downward on the vertical axis with the base 110 positioned below the housing 120 . Further, the fourth side wall 134 is extended along the width axis and vertically faces the armature 310 (see FIGS. 14 and 15 ).

In addition, in the present embodiment, the fourth side wall 134 has a pressing wall 1341 which is arranged in front of the front-rear axis (contact portion 40 side), the armature 310 can be pressed. Furthermore, by providing the pressing wall 1341 on the housing 120 , it is possible to suppress misalignment of the armature 310 during swinging. In addition, since the armature arrangement space S5 is divided front and rear by the pressing wall 1341 , the pressing wall 1341 can more reliably prevent consumable powder or the like generated in the contact portion 40 from entering the auxiliary contact side space S3 .

Furthermore, the fourth side wall 134 has a partition wall 1342 which is arranged at a position rearward of the front-rear axis (on the side of the auxiliary contact part 60 ) from the vertical wall part (rising part) 241 of the yoke 240 . The upper space S5 of the armature 310 can be divided. Furthermore, by providing the partition wall 1342 in the housing 120 , the partition wall 1342 can prevent consumable powder or the like that is not completely blocked by the pressing wall 1341 from entering the auxiliary contact side space S3 .

In addition, in the present embodiment, the partition wall 130 has a fifth side wall 135 extending along the vertical axis and arranged outside the second side wall 132 on the width axis (Y axis). The method is set in the casing 120 .

In the present embodiment, the fifth side wall 135 extends from the top wall 121 of the casing 120 so as to protrude below the vertical axis. Furthermore, in a state where the housing 120 is attached to the base 110 , the lower end of the fifth side wall 135 is positioned between the base portion 111 of the base 110 and the top wall 121 of the housing 120 .

In addition, 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 housing 120, and the amount of protrusion of the fifth side wall 135 from the top wall 121 can be appropriately set. . Since the arc elongation space S4 is divided front and rear by providing the fifth side wall 135 having such a shape, the fifth side wall 135 can more reliably prevent the consumable powder or the like generated in the contact portion 40 from entering the auxiliary contact. The situation in the side space S3.

In addition, in this embodiment, the second side wall 132 has an extension portion 1321 extending outward of the width axis. The extension portion 1321 extends from the rear end of the second side wall 132 on the front-rear axis along the width axis and the vertical axis. In this embodiment, the extension part 1321 is formed from the lower end of the second side wall 132 to the upper end side (in the middle of the upper end). That is, the extension portion 1321 is provided continuously with the second side wall 132 in a state where the upper end of the second side wall 132 protrudes above the upper end of the extension portion 1321 (see FIGS. 6 and 7 ).

In addition, when the arc A is generated between the movable contact 421 and the fixed contact 411 , the movable contact 421 and the fixed contact 411 may stick together due to arc heat. In addition, the movable contact 421 and the fixed contact 411 may deteriorate due to arc heat.

Thus, when arc A occurs between movable contact 421 and fixed contact 411 , the contacts (movable contact 421 , fixed contact 411 ) may be affected by the arc. In particular, in an electromagnetic relay through which a large current flows, the contacts (the movable contact 421, the fixed contact 411) are largely affected by the arc.

Therefore, it is preferable to make the arc A generated between the movable contact 421 and the fixed contact 411 disappear more reliably and quickly, and it is possible to suppress the contacts (the movable contact 421, the fixed contact 411) from being arced. situation of influence.

Therefore, in the present embodiment, the arc A generated between the movable contact 421 and the fixed contact 411 can be more reliably and quickly extinguished. Specifically, electromagnetic relay 1 includes yoke 80 disposed on at least one of main body portion 422 , 412 side of main body portion (first main body portion) 412 and movable contactor (second main body portion) 422 . That is, the yoke 80 is disposed on at least one of the main body portion 412 and the movable contactor 422 .

In this way, by arranging the yoke 80 on at least one of the main body 412 and the movable contact 422, the stability of the members (the main body 412 and the movable contact 422) on the side where the yoke 80 is arranged can be improved. The strength of the magnetic flux B generated around it makes the arc A disappear more reliably and more quickly.

Furthermore, in the present embodiment, the electromagnetic relay 1 includes a fixing portion 90 that fixes the yoke 80 and the main body portions 422 and 412 on which the yoke 80 is disposed. That is, the yoke 80 and the main body parts 422 and 412 on which the yoke 80 is disposed are fixed by the fixing part 90 . In this way, it is possible to suppress misalignment of the yoke 80 and the main body portions 422 and 412 on which the yoke 80 is arranged.

Here, in this embodiment, as shown in FIGS. 26 to 33 , the yoke 80 is disposed on the side of the movable contact 422 which is at least one member of the main body 412 and the movable contact 422 . That is, in the present embodiment, the movable contactor 422 serves as a main body on which the yoke 80 is arranged.

Furthermore, the movable contactor 422 which is a main body part on which the yoke 80 is disposed has an opposing surface 4221 located on a side where the first contact point 411 and the second contact point 412 are opposed to each other. Furthermore, the movable contactor 422 has an arrangement surface 4222 located on the opposite side of the opposing surface 4221 on the front-rear axis.

In addition, in the present embodiment, the arrangement surface 4222 has a specific region R1 that is aligned with the main body on the counterpart side when viewed along the front-rear axis in a state where the first contact 411 and the second contact 421 are in contact with each other. The main body parts 412 overlap.

That is, in the present embodiment, when the fixed contact 411 and the movable contact 421 are in contact with each other when the fixed contact 411 and the movable contact 421 are viewed along the direction in which the fixed contact 411 and the movable contact 421 move relative to each other, the main body (first main body) 412 A region overlapping with the movable contactor (second body portion) 422 is defined as a specific region R1 (see FIG. 34 ).

The movable contact 422 is configured so that a current I flows along a broad axis intersecting the front-rear axis in the specific region R1.

Furthermore, the yoke 80 is arranged so as to at least partially overlap the specific region R1 when viewed along the front-rear axis.

Specifically, the yoke 80 includes a substantially rectangular side wall 81 elongated on the width axis, a top wall 82 provided continuously to the upper end of the side wall 81 , and a top wall 82 provided continuously to the lower end of the side wall 81 along the top wall. 82 extends in the same direction as the bottom wall 83 provided.

Further, the front side 81a of the side wall 81 faces the back side (arrangement plane) 4222 of the movable contact 422 with the front end 82b of the top wall 82 and the front end 83b of the bottom wall 83 facing the front side of the front-rear axis.

Therefore, in the present embodiment, the side wall 81 of the yoke 80 is located on the side of the surface (arrangement surface) 4222 of the movable contact 422 opposite to the side on which the movable contact 421 is formed. .

At this time, the side wall 81 of the yoke 80 overlaps with the contact (the movable contact 421 ) of the main body (the movable contact 422 ) on the side where the yoke 80 is arranged, when viewed along the front-rear axis. way to configure. Therefore, the side wall 81 of the yoke 80 is arranged so as to overlap the contact region R2 where the fixed contact 411 and the movable contact 421 are in contact with when viewed along the front-rear axis. In other words, the yoke 80 is arranged in a state aligned along the front-rear axis with the movable contact 421 included in the movable contact 422 which is a main body portion on which the yoke 80 is arranged.

Therefore, in the present embodiment, part of the side wall 81 of the yoke 80 is in contact with the fixed contact 411 and the movable contact 421 when viewed along the direction in which the fixed contact 411 and the movable contact 421 move relative to each other. A portion where the contact region R2 overlaps (see FIG. 34 ). At this time, the side wall 81 is arranged so as to overlap the entire area of the contact region R2.

In this way, at least part of the yoke 80 is generated along the magnetic flux B generated by the current I flowing through the movable contact (the main body portion on the side where the yoke 80 is disposed) 422 and is generated in the specific region R1. Configured in the way of B.

That is, at least part of the yoke 80 is disposed in the space near the movable contactor (second main body part) 422 along the magnetic flux B generated around the movable contactor (second main body part) 422 , which belongs to a specific Space in region R1.

Thus, in the present embodiment, by arranging the yoke 80 as described above, the magnetic flux B generated around the movable contactor (second body portion) 422 can be concentrated in the yoke 80 . Furthermore, by increasing the intensity of the magnetic flux B generated around the movable contact (second body portion) 422 (strengthening the magnetic field around the movable contact 422), it is possible to more reliably and quickly move the magnetic flux B to the movable contact. The arc A generated between 421 and the fixed contact 411 disappears.

In addition, in this embodiment, a through-hole 422a for forming the movable contact 421 included in the movable contact 422 is formed in the movable contact 422 which is a main body portion on which the yoke 80 is disposed. The contact member 4211 penetrates through. Further, a concave portion 4222 a for accommodating the contact member 4211 is formed on the arrangement surface 4222 of the movable contactor 422 .

In this way, it is suppressed that the yoke 80 interferes with the contact member 4211 when the yoke 80 is arranged on the movable contactor 422 . Furthermore, the positioning accuracy of the yoke 80 and the movable contactor 422 can be further improved.

Further, movable contactor 422 , which is a main body on which yoke 80 is arranged, has side surface 4223 (upper surface) and side surface 4224 (lower surface) provided continuously to opposing surface 4221 and arrangement surface 4222 . Furthermore, the yoke 80 has an arm portion arranged along the side surface 4223 and the side surface 4224 . In this embodiment, the top wall 82 serves as an arm arranged along the side surface 4223 , and the bottom wall 83 serves as an arm arranged along the lower surface 4224 .

Moreover, the fixing part 90 has the contact part 81ba which can contact|abut the protrusion 422b and the protrusion 422b. In this embodiment, the protrusion 422b is provided on the movable contactor 422 which is the main body part on which the yoke 80 is arranged. That is, the protrusion 422b is directly provided on the movable contactor 422 which is the main body portion on which the yoke 80 is disposed.

Furthermore, the contact portion 81ba is formed on the yoke 80 . Specifically, a through-hole (opening) 80 b is formed in the side wall 81 of the yoke 80 . Then, the yoke 80 and the movable contactor 422 are crimped and fixed by crimping and fixing the yoke 80 and the movable contactor 422 in a state where the protrusion 422b of the movable contactor 422 is inserted into the through hole 80b, so that the crimping part 91 is formed at the tip end of the protrusion 422b. The yoke 80 is fixed to the movable contact 422 . Therefore, in the present embodiment, the inner peripheral surface of the through hole 80b and the peripheral edge portion of the through hole 80b on the back surface 81b of the side wall 81 serve as the abutting portion 81ba on which the protrusion 422b can abut.

Furthermore, when fixing the yoke 80 to the movable contactor 422, the lower surface 82a of the top wall 82 is brought into surface contact with the side surface 4223 (upper surface) of the movable contactor 422, and the upper surface 83a of the bottom wall 83 is brought into surface contact with the movable contactor 422. The lower surface 4224 of the movable contact 422 is in surface contact.

Here, in this embodiment, the first movable contact 421A and the second movable contact 421B are arranged along the width axis on one movable contact 422 . In addition, the two body parts (the first fixed contact side terminal 412A and the second fixed contact side terminal 412B) have the first fixed contact 411A and the second fixed contact 411B.

Furthermore, the first movable contact 421A is in contact with and separated from the first fixed contact 411A, and the second movable contact 421B is in contact with and separated from the second fixed contact 411B.

Therefore, in this embodiment, the yoke 80 has the 1st yoke 840 arrange|positioned at the side where the 1st movable contact 421A is located, and the 2nd yoke which is arrange|positioned at the side where the 2nd movable contact 421B is located. 850. Furthermore, the first yoke 840 and the second yoke 850 are connected by a connection part 860 .

Thus, in this embodiment, as the yoke 80, the structure which integrated the 1st yoke 840 and the 2nd yoke 850 by the connection part 860 is illustrated.

In addition, in the present embodiment, the yoke 80 has a shape in which a notch 80a is provided at 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 of the Z-axis at both ends of the Y-axis. The notch 80 a is provided to suppress interference between the yoke 80 and the movable part 50 .

Furthermore, the part where the notch 80a is formed in the central part of the Y-axis becomes the coupling part 860, and the parts on both ends of the Y-axis become the first yoke 840 and the second yoke 850, respectively. In this way, if the length of the Z-axis of the connecting portion 860 is shorter than the lengths of the Z-axis of the first yoke 840 and the second yoke 850, the magnetic flux B generated around the movable contactor 422 can be made more efficient. Concentrating on the first yoke 840 and the second yoke 850 can further increase the intensity of the magnetic flux B generated around the contacts (the fixed contact 411 and the movable contact 421 that are in contact with each other and separated from each other).

In addition, the top wall 82 and the bottom wall 83 of the yoke 80 are also formed on both sides of the Y-axis by using the notch 80a, and serve as the arm portion of the first yoke 840 and the arm portion of the second yoke 850, respectively.

Specifically, the top wall 82 provided continuously to the first yoke 840 and disposed on the side surface 4223 (upper surface) of the movable contactor 422 serves as the first arm portion 841 . Furthermore, the top wall 82 provided continuously with the second yoke 850 and disposed on the side surface 4223 (upper surface) of the movable contactor 422 serves as the second arm portion 851 .

In addition, in this embodiment, the bottom wall 83 provided continuously to the first yoke 840 and the second yoke 850 and disposed on the lower surface (second end surface) 4224 of the movable contactor 422 serves as a third arm. The bottom wall 83 is arranged below the portion of the movable contact 422 where the notch portion 422c is not formed. Therefore, in the present embodiment, in a state where the fixed contact 411 is separated from the movable contact 421 , the shortest distance D1 between the yoke 80 and the main body portion 412 of the fixed contact portion 410 serving as the other side main body is smaller than the shortest distance D1. The shortest distance D2 between the main body part (first main body part) 412 and the movable contactor (second main body part) 422 is short (see FIG. 25 ).

In addition, in the present embodiment, a through hole (opening portion) 80 b for fixing the yoke 80 to the movable contactor 422 is formed in the coupling portion 860 . That is, the protrusion 422b is provided at a position deviated from the movable contact 421 included in the movable contact 422 which is a main body portion on which the yoke 80 is disposed.

In this way, the yoke 80 can be fixed to the movable contactor 422 without being obstructed by the movable contactor 421 , and the attachment workability of the yoke 80 to the movable contactor 422 can be further improved.

Moreover, in this embodiment, the movable spring (connection member) 53 which moves integrally with the movable contactor 422 according to excitation and de-excitation of the coil 210 is connected to the movable contactor 422 . Furthermore, the yoke 80 is also connected to the movable spring (connection member) 53 together with the movable contactor 422 . Specifically, the yoke 80 is connected to the movable spring (connection member) 53 together with the movable contact 422 at the connection portion 860 .

Furthermore, in this embodiment, when the yoke 80 and the movable contactor 422 are fixed by the fixing part 90 , the movable spring (connection member) 53 is also fixed by the fixing part 90 . At this time, the movable spring (connection member) 53 is disposed between the movable contact 422 and the connection portion 860 .

Thus, while suppressing the displacement of the movable contactor 422 and the yoke 80, the displacement of the movable contactor 422 and the movable spring (connection member) 53 can also be suppressed.

In addition, in this embodiment, the case where the yoke 80 is arrange|positioned at the movable contactor 422 was illustrated, However, The yoke 80 may be arrange|positioned at the main-body part 412. As shown in FIG. Moreover, the yoke 80 may be arrange|positioned at both the movable contactor 422 and the main-body part 412. As shown in FIG.

In addition, in the present embodiment, the arc A generated between the movable contact 421 and the fixed contact 411 can be moved more quickly so as to separate from the movable contact 421 and the fixed contact 411. .

Specifically, as shown in FIGS. 18 to 23 , a protruding portion 417 protruding toward the movable contactor 422 is formed on the main body portion 412 . At this time, the protruding portion 417 is formed so as to be located rearward (on the side of the movable contact 422 ) from the tip (top) 411 a of the fixed contact 411 .

In the present embodiment, the fixed contact portion 410 has an outer extension portion 415 arranged outside between the fixed contacts 411 arranged along the width axis. Furthermore, a protruding portion 417 is connected to the outer extension portion 415 .

Here, in the present embodiment, the protruding portion 417 has a first portion 4171 protruding from the upper surface (end surface) 415c of the outer extension portion 415 to the upper side (second end side) of the vertical axis. Moreover, the protrusion part 417 has the 2nd part 4173 which protrudes toward the movable contact 421 side with respect to the front surface (opposite surface: the surface opposite to a movable contact part) of the fixed contact part 410. Furthermore, the protrusion part 417 has the bending part 4172 which connects the 1st part 4171 and the 2nd part 4173.

Such protruding portion 417 can be formed by, for example, bending the upper portion of a plate-shaped member protruding upward (second end side) from the upper surface (end surface) 415c of the outer extension portion 415 toward the rear of the front-rear axis by 180 degrees. form.

In this way, in the present embodiment, the vertically bent protruding portion 417 is formed at a portion of the fixed contact portion 410 deviated from the conduction portion (portion through which current flows between the lead terminal 414 and the fixed contact 411 ). Furthermore, a protruding portion 417 is formed on the outside between a pair of fixed contacts 411 arranged along the Y-axis.

Thus, the protruding portion 417 is formed near the outer side between the fixed contacts 411 , and the arc A generated when the contacts are opened can quickly move from the movable contact 421 and the fixed contact 411 to the protruding portion 417 .

In addition, in the present embodiment, a large current flows through the electromagnetic relay 1 by increasing the plate thickness of the fixed contact portion 410 . Therefore, in the case where the protruding portion is formed by bending both ends of the wide axis of the fixed contact portion 410, it is necessary to provide a large notch in the conductive portion of the fixed contact portion 410, thereby reducing the size of the fixed contact portion. The width dimension of 410 also facilitates the bending process of the protruding part. Furthermore, if a larger notch is provided in the conduction portion of the fixed contact portion 410 , the width of the conduction portion of the fixed contact portion 410 becomes narrower than when no notch is provided, making it difficult to flow a large current.

On the other hand, in this embodiment, unlike the case where the protrusions are formed on both ends of the width axis of the fixed contact part 410 , the protrusions 417 are formed without notches in the conduction part of the fixed contact part 410 . Specifically, the protruding portion 417 is formed at a portion of the fixed contact portion 410 deviated from the conduction portion.

Furthermore, the terminal connection portion 413 extends along the width axis so as to exist at least between the inside end (the end on the side of the fixed contact 411 ) 417 a of the protruding portion 417 on the width axis to the fixed contact 411 . In the present embodiment, the terminal connection portion 413 extends along the width axis so as to exist between the outer end 417 b of the width axis of the protruding portion 417 and the fixed contact 411 .

In this way, the protruding portion 417 can be formed on the fixed contact portion 410 without narrowing the width of the conduction portion of the fixed contact portion 410 (reducing the terminal cross-sectional area of the conduction portion). Furthermore, if the terminal cross-sectional area of the current-carrying portion of the fixed contact portion 410 is increased, heat generation due to a large current can be more reliably suppressed.

In this way, in this embodiment, even when the plate thickness of the fixed contact part 410 is increased, it is possible to more reliably suppress the contact between the movable contact 421 and the fixed contact 411 while ensuring the terminal cross-sectional area of the current-carrying part. A condition affected by an arc A generated when the contacts are opened.

In addition, in this embodiment, the first part 4171 and the second part 4173 are connected by the U-shaped bending part 4172 . Furthermore, the second portion 4173 faces the outer extension portion 415 front and back.

In this way, the protruding portion 417 can be formed only by bending the plate 180 degrees, and the protruding portion 417 can be formed more easily. In addition, if the first part 4171 and the second part 4173 are connected by the U-shaped bent part 4172, the protruding part 417 can be brought closer to the fixed contact 411 more easily. Furthermore, if the protruding portion 417 is formed by bending the plate 180 degrees, the amount of protruding the protruding portion 417 behind the front-rear axis can be determined by setting the thickness of the plate, so that the protruding portion 417 can be more easily controlled. quantity.

In addition, in this embodiment, the width W1 along the Y axis of the curved portion 4172 is smaller than the length L1 connecting the curved top 4172 a of the curved portion 4172 and the lower end (tip) 4173 a of the second portion 4173 . In this way, it is possible to more easily bend the plate at the portion to be the protruding portion 417 .

In addition, the second portion 4173 and the fixed contact 411 are arranged in a state aligned along the width axis. That is, the protruding portion 417 is formed such that the upper and lower positions of the second portion 4173 and the fixed contact 411 are substantially the same. In this way, the second portion 4173 and the fixed contact 411 are opposed to each other along the direction in which the arc A extends, that is, the width axis. In this way, the arc A generated when the contacts are opened can be quickly moved from the movable contact 421 and the fixed contact 411 to the protrusion 417 more easily and reliably.

Furthermore, a notch 4152 is formed at a position on the inner side of the width axis than the first portion 4171 of the outer extension portion 415 . In the present embodiment, the notch 4152 is formed so as to be located above the vertical axis relative to the fixed contact 411 . In this way, the number of raw materials for forming the fixed contact portion 410 by punching the raw material is reduced.

Furthermore, a tapered portion 4174 that becomes narrower in width (narrower in width along the Y-axis) toward the tip (lower end) is formed in the second portion 4173 . Specifically, in the state where the fixed contact portion 410 is viewed along the front-rear axis, the side closer to the fixed contact 411 on the inner side (the fixed contact portion side) of the second portion 4173 of the width axis moves toward the width axis. It is inclined so that the inner side (fixed contact part side) becomes the upper side of the vertical axis. Thus, the tapered portion 4174 is formed at the second portion 4173 .

With such a structure, the contact gap between the fixed contact portion 410 and the movable contact portion 420 can be ensured while reducing the size of the device (required to further maintain insulation when the contacts are disconnected). distance).

In addition, instead of forming the tapered portion 4174 on the protruding portion 417 , the protruding portion 417 can also be formed by bending a plate protruding upward from the upper surface (end surface) 415c of the outer extension portion 415 by 90°. Furthermore, the protruding portion 417 formed by bending 90° may have a tapered portion 4174 . That is, the shape of the protruding portion 417 can be various shapes.

Furthermore, in the present embodiment, the fixed contact part 410 includes an inner extension part 416 disposed between the fixed contacts 411 and facing the movable contact part 420 along the front-rear axis. Then, when fixing the fixed contact portion 410 to the base 110 (housing 10), the inner extension 416 is press-fitted into the inner press-fit groove 116 formed in the base 110, and the outer extension 415 is press-fitted into the base 110. The outside is pressed into the groove 117 . At this time, a press-fit protrusion 116 a protruding along the front-rear axis is provided in the inner press-fit groove 116 , and the inner extension portion 416 is press-fit into the inner press-fit groove 116 by the press-fit protrusion 116 a. Similarly, a press-fit protrusion 117 a protruding along the front-rear axis is provided in the outer press-fit groove 117 , and the outer extension portion 415 is press-fit into the outer press-fit groove 117 by the press-fit protrusion 117 a.

Therefore, in this embodiment, when the fixed contact portion 410 is fixed to the base 110 (housing 10), both surfaces (the front 416a and the back 416b) of the end portion 4161 of the inner extension 416 are in contact with the housing 10, Both surfaces (the front surface 415 a and the rear surface 415 b ) of the end portion 4151 of the outer extension portion 415 are in contact with the housing 10 .

In this way, the positioning accuracy of the fixed contact portion 410 relative to the housing 10 can be further improved. In this way, on the basis of more accurately determining the contact gap when the movable contact 421 and the fixed contact 411 are in the second position, the gap between the movable contact 421 and the fixed contact 411 when they are in the first position can be ensured. contact pressure. In addition, since both sides of the width axis of the fixed contact part 410 are press-fitted and fixed to the case 10 , the fixed contact part 410 can be more firmly fixed to the case 10 .

Furthermore, in the present embodiment, a movable side protrusion 4226 protruding toward the main body 412 is formed at the end portion 4225 of the width axis of the movable contactor 422 .

In this embodiment, the movable contactor 422 is formed by bending the Y-axis end portion of the substantially rectangular plate-shaped member elongated on the Y-axis forward (on the main body portion 412 side). Tab 4226.

At this time, the movable side protrusion 4226 is formed such that the tip 4226a of the movable side protrusion 4226 is located forward (on the main body 412 side) of the tip (top) 421a of the movable contact 421 .

Furthermore, in the present embodiment, the movable-side protruding portion 4226 is located on the inner side of the width axis than the protruding portion 417 (see FIG. 37 ).

Furthermore, by making the body part 412 and the movable contact 422 into the above-mentioned shapes, when the arc A is generated between the movable contact 421 and the fixed contact 411, the movable contact 421 side and the fixed contact 411 The arc starting point (discharge point) A1 of the arc A is moved to the side of the protrusion 417 and the side of the movable side protrusion 4226 .

Specifically, the arc A generated between the movable contact 421 and the fixed contact 411 acts on the Lorentz force outside the Y-axis and pulls the arc A generated between the movable contact 421 and the fixed contact 411 to the outside of the Y-axis. The arc A generated between the fixed contacts 411 moves toward the protruding portion 417 and the movable side protruding portion 4224 .

Furthermore, in the present embodiment, since the movable side protrusion 4226 is located on the inner side of the Y axis than the protrusion 417, the arc A moving to the side of the protrusion 417 and the movable side protrusion 4226 is directed toward the Y axis. Axis outside and is extruded behind the X axis.

Therefore, in the present embodiment, as shown in FIG. 39 , in the state where the main body portion 412 and the movable contactor 422 are housed in the case 10 , the Y axis of the protruding portion 417 and the movable side protruding portion 4226 A space is formed outside and behind the X-axis.

In this way, it is possible to more reliably suppress the case 10 and the components accommodated in the case 10 from being affected by the arc A extending outward of the Y-axis and backward of the X-axis.

In addition, as shown in FIG. 40 , the movable-side protruding portion 4226 may be located outward on the Y-axis relative to the protruding portion 417 .

For example, when the main body 412 and the movable contactor 422 are accommodated in the case 10, a space is formed outside the Y-axis of the protruding part 417 and the movable-side protruding part 4226 and in front of the X-axis. In this case, it is preferable to set it as the structure shown in FIG. 40.

In addition, in this embodiment, the case where the protruding part is provided in both the main body part 412 and the movable contactor 422 is exemplified, but the protruding part may be provided only in the main body part 412 .

In addition, the shape of the yoke 80 is not limited to the shape demonstrated in the said embodiment, It can be set as various shapes.

For example, it can be set as the yoke 80 shown in FIGS. 41 to 49 .

The yoke 80 shown in FIGS. 41 to 49 also includes a substantially rectangular side wall 81 elongated on the width axis, a top wall 82 provided continuously to the upper end of the side wall 81 , and a top wall 82 provided continuously to the lower end of the side wall 81 . The bottom wall 83 extends in the same direction as the top wall 82 .

Further, the front side 81a of the side wall 81 faces the back side (arrangement plane) 4222 of the movable contact 422 with the front end 82b of the top wall 82 and the front end 83b of the bottom wall 83 facing the front side of the front-rear axis.

In addition, the top wall 82 serves as an arm arranged along the side surface 4223 (upper surface), and the bottom wall 83 serves as an arm arranged along the lower surface 4224 .

Furthermore, the yoke 80 shown in FIGS. 41 to 49 also has a first yoke 840 disposed on the side where the first movable contact 421A is located, and a first yoke 840 disposed on the side where the second movable contact 421B is located. 2 yokes 850. Furthermore, the first yoke 840 and the second yoke 850 are connected by a connection part 860 .

In addition, the yoke 80 is fixed to the movable contact 422 which is a main body part on which the yoke 80 is arranged by the fixing part 90 .

Here, in yoke 80 shown in FIGS. 41 to 49 , only connection portion 860 of first yoke 840 , second yoke 850 , and connection portion 860 has bottom wall (third arm portion) 83 .

Furthermore, the bottom wall (third arm portion) 83 formed on the connection portion 860 is accommodated in the notch portion 422 c of the movable contactor 422 . In this way, it is possible to suppress the third arm portion 83 from protruding below the movable contactor 422 .

In addition, in the state where the yoke 80 is fixed to the movable contactor 422, the terminal surface (lower end surface) 81c on the lower side of the side wall 81 serving as the part of the first yoke 840 and the second yoke 850 is located on the lower side of the side wall 81c. The lower surface 4224 of the moving contact 422 is at the upper position.

In this way, in the state where the fixed contact 411 is separated from the movable contact 421, the shortest distance D1 between the yoke 80 and the main body 412 of the fixed contact 410 as the counterpart main body becomes the main body (the first main body). part) 412 and the movable contactor (second main body part) 422 is greater than or equal to the shortest distance D2.

In this way, it is possible to reduce the influence of the yoke 80 on the electrical insulation while more reliably suppressing the contact from being affected by the arc.

Moreover, it can also be set as the yoke 80 shown in FIGS. 50-57.

The yoke 80 shown in FIGS. 50 to 57 includes a substantially rectangular side wall 81 elongated on the width axis and a top wall 82 provided continuously to the upper end of the side wall 81 , but no bottom wall is formed on the yoke 80 . 83.

Furthermore, the front side 81a of the side wall 81 is arranged so that the front side 81a of the side wall 81 faces the back side (disposition surface) 4222 of the movable contactor 422 with the front end 82b of the top wall 82 facing the front side of the front-rear axis. In addition, the top wall 82 serves as an arm arranged along the side surface 4223 (upper surface).

Furthermore, the yoke 80 shown in FIGS. 50 to 57 also has a first yoke 840 disposed on the side where the first movable contact 421A is located, and a first yoke 840 disposed on the side where the second movable contact 421B is located. 2 yokes 850. Furthermore, the first yoke 840 and the second yoke 850 are connected by a connection part 860 .

In addition, the yoke 80 is fixed to the movable contact 422 which is a main body part on which the yoke 80 is arranged by the fixing part 90 .

In addition, when the yoke 80 is fixed to the movable contactor 422, the terminal surface (lower end surface) 81c on the lower side of the side wall 81 serving as the part of the first yoke 840 and the second yoke 850 is located on the lower side of the side wall 81c. The lower surface 4224 of the moving contact 422 is at the upper position.

In this way, in the state where the fixed contact 411 is separated from the movable contact 421, the shortest distance D1 between the yoke 80 and the main body 412 of the fixed contact 410 as the counterpart main body becomes the main body (the first main body). part) 412 and the movable contactor (second main body part) 422 is greater than or equal to the shortest distance D2.

In this way, it is possible to reduce the influence of the yoke 80 on the electrical insulation while more reliably suppressing the contact from being affected by the arc.

(second embodiment)

As shown in FIGS. 58 and 59 , the electromagnetic relay 1 of the present embodiment includes a hollow box-shaped housing 10 made of a resin material. In this embodiment, the casing 10 has a base 110 and a case 120 covering the base 110 , and has a substantially rectangular parallelepiped outer surface. In addition, an internal space S1 is formed in the casing 10 in a state where the housing 120 is attached to the base 110 . In addition, the shape of the outer surface of the housing 10 is not limited to a rectangular parallelepiped shape, and may have any shape.

Furthermore, an electromagnet device (drive unit) 20 is arranged behind the front-rear axis in the internal space S1 of the housing 10 , and a contact portion 40 is arranged in front of the front-rear axis.

The electromagnet device 20 includes a bobbin 220 around which a coil 210 is wound, an iron core 230 , a yoke 240 and a coil terminal 250 . In addition, in the present embodiment, the electromagnet device 20 includes the permanent magnet 260 sandwiched by the portion of the yoke 240 standing upright from the base 110 .

Then, the moving member 30 is moved by switching the driving state of the electromagnet device 20 .

In the present embodiment, the moving member 30 includes an armature 310 arranged to face the core 230 along the vertical axis (Z axis), and a hinge spring 320 mounted across the armature 310 and the yoke 240 .

The armature 310 is formed of a conductive metal, and is disposed so as to be able to swing relative to the iron core 230 along the vertical axis (Z-axis) according to excitation and de-excitation of the coil 210 .

The armature 310 includes a horizontal wall portion 311 facing the iron core 230 along the vertical axis (Z-axis), and a vertical wall portion extending downward from the top end of the horizontal wall portion 311 on the front-rear axis (X-axis). 312.

Moreover, by switching the driving state of the electromagnet device 20 and swinging the armature 310, it is possible to switch the conduction and non-conduction of the fixed contact part 410 and the movable contact part 420 that are paired with each other (having contacts that are in contact with each other) and the movable contact part 420. Pass.

The contact part 40 includes a fixed contact part 410 and a movable contact part 420 , and the fixed contact part 410 includes a fixed contact 411 and a main body part 412 having the fixed contact 411 . On the other hand, the movable contact part 420 includes a movable contact 421 which is relatively movable relative to the fixed contact 411 and capable of contacting and separating from the fixed contact 411 , and a movable spring 422 having the movable contact 421 . In this embodiment, the contact part 40 includes a main body part 412 having a fixed contact 411 and a movable spring 422 having a movable contact 421 .

The contact portion 40 is provided continuously with the armature 310 via the movable portion 50 . Furthermore, by swinging the movable part 50 along the front-rear axis (X-axis) as the armature 310 swings, the movable contact part 420 moves along the front-rear axis (X-axis) in conjunction with the movement of the movable part 50 . swing.

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

In addition, a first protruding portion 56 abutting against the vertical wall portion 312 is provided on the side of the main body portion 54 opposite to the vertical wall portion 312 , and a first protruding portion 56 located on the side opposite to the contact portion 40 is provided. The second protrusion 57 is located above the protrusion 56 .

Moreover, when the vertical wall portion 312 moves in a direction away from the yoke 240 by driving the electromagnet device 20 , the moving force is input to the main body portion 54 via the first protrusion portion 56 and the main body portion 54 is directed to the contact portion 40 . direction to move.

In this embodiment, the contact portion 40 is configured as a contact: in a state where the horizontal wall portion 311 of the armature 310 is not attracted by the iron core 230, the fixed contact 411 is separated from the movable contact 421. When the electromagnet device 20 is driven such that the part 311 is attracted by the iron core 230 , the fixed contact 411 contacts the movable contact 421 .

In addition, as shown in FIG. 58 , the housing 120 is formed as a rectangular parallelepiped housing that is opened downward as a whole, and the housing 120 is attached to the base 110 by closely fitting the opening at the lower end to the stepped portion formed on the outer periphery of the base 110 . Base 110. At this time, the protrusion 112a of the base 110 is inserted into the through hole 122a of the case 120, and the case 120 is prevented from falling off.

Furthermore, a partition wall 130 is formed inside the casing 120 . The partition wall 130 is provided between the vertical wall portion 312 of the armature 310 and the movable portion 50 . In addition, a notch 130 a through which the first protrusion 56 penetrates is formed in the partition wall 130 .

Here, also in this embodiment, the arc A generated between the movable contact 421 and the fixed contact 411 can be more reliably and quickly extinguished. In addition, in the present embodiment, the arc A is stretched upward (outside the Z-axis).

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

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

Here, in this embodiment, as shown in FIGS. 58 and 59 , the yoke 80 is disposed on the side of the main body 412 that is at least one of the main body 412 and the movable spring 422 . That is, in this embodiment, the main body part 412 of the fixed contact part 410 becomes the main body part in which the yoke 80 is arrange|positioned.

Further, the main body portion 412 on which the yoke 80 is disposed has an opposing surface 4121 located on a side where the first contact 411 and the second contact 412 are opposed to each other. Furthermore, the main body portion 412 has an arrangement surface 4122 located on the opposite side of the opposing surface 4121 on the front-rear axis.

In addition, the arrangement surface 4122 has a specific region R1 which overlaps with the movable spring 422 as the main body part on the counterpart side when viewed along the front-rear axis in a state where the first contact 411 and the second contact 421 are in contact. .

The main body portion 412 is configured such that a current I flows along a vertical axis intersecting the front-rear axis in the specific region R1.

Furthermore, the yoke 80 is arranged so as to at least partially overlap the specific region R1 when viewed along the front-rear axis.

Specifically, the yoke 80 includes a substantially rectangular side wall 81 elongated on the vertical axis, a first wall 82 provided continuously to the first end of the width axis of the side wall 81 , and a second end connected to the side wall 81 . The second wall 83 is continuously provided and extends in the same direction as the first wall 82 .

Furthermore, the front side 81a of the side wall 81 is arranged so that the front side 81a of the side wall 81 faces the back side (arrangement plane) 4122 of the main body part 412 with the front end of the first wall 82 and the front end of the second wall 83 facing the rear side of the front-rear axis.

At this time, the side wall 81 of the yoke 80 is arranged so as to overlap with the contact (fixed contact 411 ) of the main body (main body 412 ) on the side where the yoke 80 is arranged, when viewed along the front-rear axis. . Therefore, the side wall 81 of the yoke 80 is arranged so as to overlap with the contact region R2 where the fixed contact 411 and the movable contact 421 are in contact with when viewed along the front-rear axis. That is, the yoke 80 is arranged in a state aligned with the contacts (fixed contacts) 421 of the main body 412 on which the yoke 80 is arranged along the front-rear axis.

Thus, in the present embodiment, by arranging the yoke 80 as described above, the magnetic flux B generated around the main body portion (first main body portion) 412 can be concentrated in the yoke 80 . Furthermore, by increasing the intensity of the magnetic flux B generated around the body portion (first body portion) 412 (strengthening the magnetic field around the body portion 412), it is possible to reduce the magnetic flux B generated between the movable contact 421 and the fixed contact 411. Arc A extinguishes more reliably and more quickly.

Further, the main body 412 , which is the main body on which the yoke 80 is arranged, has side surfaces (first surface 4123 and second surface 4124 ) provided continuously to the facing surface 4121 and the arrangement surface 4122 . Furthermore, the yoke 80 has an arm portion arranged along the side surfaces (the first surface 4123 and the second surface 4124 ). In the present embodiment, the first wall 82 is an arm arranged along the first surface 4123 , and the second wall 83 is an arm arranged along the second surface 4124 .

Moreover, the fixing part 90 has the protrusion 411b and the contact part 81ba which can contact|abut the protrusion 411b. In the present embodiment, the protrusion 411b is provided on the contact 411 of the main body 412 on which the yoke 80 is disposed.

Furthermore, the contact portion 81ba is formed on the yoke 80 . Also in this embodiment, the inner peripheral surface of the through hole 80b and the peripheral edge portion of the through hole 80b on the back surface 81b of the side wall 81 serve as the abutting portion 81ba on which the protrusion 422b can abut.

In addition, in the present embodiment, the case where the yoke 80 is disposed on the main body portion 412 of the fixed contact portion 410 is exemplified, but the yoke 80 may be disposed on the movable spring 422 . In addition, the yoke 80 may be arranged on both the main body portion 412 and the movable spring 422 .

[Effect]

Hereinafter, the characteristic configurations of the electromagnetic relays shown in the above-described embodiments and modifications thereof and the effects obtained therefrom will be described.

(1) The electromagnetic relay 1 shown in each of the above-mentioned embodiments and modifications thereof includes: an electromagnet device 20 having a coil 210; a fixed contact 411 (or a movable contact 421); a movable contact 421 ( Or the fixed contact 411), which is opposite to the fixed contact 411 (or the movable contact 421) in the front-rear direction, and can move relative to the fixed contact 411 (or the movable contact 421) to contact and separate; the main body 412 (or movable contact 422), which has fixed contact 411 (or movable contact 421); movable contact 422 (or main body 412), which has movable contact 421 (or fixed contact 411 ); the yoke 80, which is fixed to the movable contact 422 (or the main body 412); and the fixing part 90 (such as the protrusion 422b), which fixes the yoke 80 to the movable contact 422 (or the main body 412).

The movable contact 422 (or the main body part 412) has an opposing surface 4221 (or 4121) located on the side opposite to the fixed contact 411 and the movable contact 421, and an arrangement surface located on the opposite side of the opposing surface 4221 (or 4121). 4222 (or 4122).

The arrangement surface 4222 (or 4122) has a specific region R1, which overlaps with the main body 412 (or the movable contact 422) when viewed along the front-rear direction, and the yoke 80 is at least The movable contactor 422 (or the main body 412 ) on which the yoke 80 is arranged is arranged so as to partially overlap the specific region R1 , and is configured to flow current through the specific region R1 . The fixed portion 90 has a protrusion 422b (or 411b) provided on the movable contact 422 (or the main body 412) or the movable contact 421 (or the fixed contact 411) of the movable contact 422 (or the main body 412). ) and the contact portion 81ba provided on the yoke 80 and capable of contacting the protrusion 422b (or 411b).

In this way, the magnetic flux B generated around the movable contactor 422 or the main body portion 412 on the side where the yoke 80 is arranged can be concentrated in the yoke 80 . As a result, the intensity of the magnetic flux B generated around the movable contact 422 or the main body 412 on the side where the yoke 80 is disposed can be increased (enhanced magnetic field), and the fixed contact 411 and the movable contact 421 can be connected to each other. The arc A generated between them is more reliable and disappears more quickly.

In addition, the yoke 80 and the movable contact 422 or the main body 412 on which the yoke 80 is disposed are fixed by the fixing portion 90 . It is possible to suppress misalignment of the yoke 80 and the movable contactor 422 or the main body portion 412 on which the yoke 80 is disposed. As a result, the intensity of the magnetic flux B generated around the movable contactor 422 or the main body portion 412 on the side where the yoke 80 is disposed can be more reliably increased.

In this manner, according to the electromagnetic relay 1 described in the above-described embodiments and modifications thereof, it is possible to more reliably suppress the contact from being affected by the arc.

(2) In addition, it is preferable that the yoke 80 and the movable contactor 422 (or the main body portion 412 ) are caulked and fixed by the protrusion 422 b (or the protrusion 411 b ).

In this way, the yoke 80 and the movable contactor 422 (or the main body 412 ) can be more reliably fixed, and the influence of the arc on the contacts can be more reliably suppressed.

(3) Furthermore, it is preferable that the protrusion 422 b is formed on the movable contact 422 (or the main body portion 412 ).

In this way, if the protrusion 422b is directly provided on the movable contactor 422 (or the main body part 412), the positioning accuracy between the yoke 80 and the movable contactor 422 (or the main body part 412) can be further improved. As a result, it is possible to more reliably suppress the contact from being affected by the arc.

(4) Furthermore, it is preferable that the protrusion 411 b is formed on the contact 411 which the main body part 412 has.

In this way, since the shape of the main body part 412 can be further simplified, the manufacture of the main body part 412 becomes easier. In addition, since the yoke 80 can also be fixed in the process of attaching the contacts 411 to the main body 412 , the workability of attaching the yoke 80 to the main body 412 can be further improved.

(5) Moreover, it is preferable that the yoke 80 has the opening part 80b which accommodates the protrusion 422b, 411b.

In this way, the positioning accuracy between the yoke 80 and the movable contactor 422 (or the main body portion 412 ) can be further improved.

(6) Furthermore, it is preferable that the yoke 80 is arranged in a line with the movable contact 421 (or the fixed contact 411 ) included in the movable contact 422 (or the main body portion 412 ).

In this way, the magnetic flux B can be more reliably concentrated around the contacts 421 and 411, and it is possible to more reliably suppress the contacts from being affected by the arc.

(7) In addition, it is preferable that the movable contactor 422 (or the main body part 412 ) has a through-hole 422 a through which the contact member 4211 forming the movable contactor 422 (or the main body part 412 ) penetrates, and a hole 422 a provided on the disposition surface 4222 . And accommodate the recessed part 4222a of the contact member 4211.

In this way, since the interference with the contact member 4211 is suppressed when the yoke 80 is disposed on the main body 422 , positioning accuracy between the yoke 80 and the movable contact 422 (or the main body 412 ) can be further improved.

(8) In addition, it is preferable that the movable contactor 422 (or the main body part 412 ) has side surfaces 4223 , 4224 , 4123 , 4124 provided continuously with the opposing surfaces 4221 , 4121 and the arrangement surfaces 4222 , 4122 , and that the yoke 80 has sides along the The arms 82, 83 are disposed along the side surfaces 4223, 4224, 4123, 4124.

In this way, the magnetic flux B can be more reliably concentrated around the movable contactor 422 (or the main body portion 412 ), and the influence of the arc on the contacts can be more reliably suppressed.

(9) In addition, the movable contactor 422 (or the main body part 412 ) may have the notch part 422c which accommodates the arm part 82,83.

In this way, it is possible to suppress the arm portions 82 and 83 from protruding from the movable contactor 422 (or the main body portion 412 ). As a result, it is possible to reduce the size of the electromagnetic relay 1 .

(10) In addition, it is preferable that the shortest distance D1 between the yoke 80 and the movable contact 422 (or the main body 412 ) is the movable contact in the state where the fixed contact 411 is separated from the movable contact 421 . The shortest distance D2 between the head 422 and the main body 412 is greater than or equal to that of the shortest distance D2.

In this way, it is possible to reduce the influence of the yoke 80 on the electrical insulation while more reliably suppressing the contact from being affected by the arc.

(11) In addition, it is preferable that the protrusion 422 b is provided at a distance from the movable contact 421 (or the fixed contact 411 ) included in the movable contact 422 (or the main body portion 412 ).

In this way, since the yoke 80 can be fixed to the movable contact 422 (or the main body portion 412) without being hindered by the movable contact 421 (or the fixed contact 411), the relative strength of the yoke 80 to the movable contact can be further improved. The installation workability of the point 421 (or the fixed contact 411).

(12) In addition, the fixed contact 411 may include a first fixed contact 411A and a second fixed contact 411B, and the movable contact 412 may include a first movable contact that is separated from the first fixed contact 411A. 412A and the second movable contact 412B that is in contact with and separated from the second fixed contact 411B.

Preferably, the main body portion 412 has a first fixed contact side terminal 412A and a second fixed contact side terminal 412B, the first fixed contact side terminal 412A has a first fixed contact 411A, and the second fixed contact side terminal 412B The terminal 412B has a second fixed contact 411B, and the movable contact 422 has a first movable contact 421A and a second movable contact 421B.

In this way, it is possible to provide the electromagnetic relay 1 through which a larger current flows than an electromagnetic relay in which only one set of the fixed contact 411 and the movable contact 421 is provided.

(13) In addition, it is preferable that the yoke 80 has: a first yoke 840 disposed on the side where the first movable contact 421A is located; a second yoke disposed on the side of the second movable contact 421A; A side where the point 421B is located; and a connecting portion 860 that connects the first yoke 840 and the second yoke 850 to each other.

In this way, when the two yokes 840 and 850 are connected by the connecting portion 860 , the magnetic flux B can be more concentrated around the first fixed contact side terminal 412A and the second fixed contact side terminal 412B. As a result, it is possible to more reliably suppress the contact from being affected by the arc.

(14) In addition, it is preferable to further include a connecting member (movable spring 53 ) that moves integrally with the movable contact 422 according to excitation or de-excitation of the coil, and the connecting member (movable spring 53 ) ) is disposed between the movable contact 422 and the connecting portion 860 .

In this way, the positioning accuracy between the movable contactor 422 and the yoke 80 can be further improved.

(15) In addition, it is preferable that the movable contactor 422 has: a side surface 4223 provided continuously with the opposite surface 4221 and the arrangement surface 4222; In contrast, the first yoke 840 has a first arm portion 841 arranged on the side surface 4223 , and the second yoke 850 has a second arm portion 851 arranged on the side surface 4223 .

In this way, it is possible to more reliably suppress the contact from being affected by the arc while reducing the size of the electromagnetic relay 1 .

(16) Furthermore, it is preferable that the yoke 80 has the third arm portion 83 arranged on the side surface 4224 .

In this way, it is possible to more reliably suppress the contact from being affected by the arc while reducing the size of the electromagnetic relay 1 .

(17) Furthermore, it is preferable that the end portion 4225 of the movable contactor 422 has a protrusion protruding toward at least one of the first fixed contact side terminal 412A and the second fixed contact side terminal 412B. Section 4226.

In this way, the arc A generated when the contacts are opened can be quickly moved from the first contact 411 and the second contact 421 to the protrusion 422 .

[other]

As mentioned above, although the content of the electromagnetic relay of this disclosure was demonstrated, it is obvious to those skilled in the art that various deformation|transformation and improvement are possible without being limited to these descriptions.

For example, it may be a configuration in which the configurations shown in the above-described embodiments and modifications thereof are appropriately combined.

In addition, in the above-mentioned first embodiment and its modifications, the case where the auxiliary contact portion 60 is in the open state when the contact portion 40 is in the closed state is illustrated, but it may also be the case where the contact portion 40 is in the closed state. The auxiliary contact portion 60 is also in the closed state. At this time, the contact part 40 and the auxiliary contact part 60 can be used as a so-called normally closed contact part in which the contacts are closed in the initial state, or the contact part 40 and the auxiliary contact part 60 can be used as A so-called normally open contact part in which the contact is opened in the initial state.

In addition, in the above-mentioned first embodiment and its modified examples, the electromagnetic relay 1 including the auxiliary contact portion 60 was illustrated, but the electromagnetic relay 1 not including the auxiliary contact portion 60 can also be used.

In addition, in each of the above-described embodiments and modifications thereof, the movable spring 53 was illustrated as the connection member, but the connection member can also be formed using a member other than a spring.

In addition, in each of the above-described embodiments and modifications thereof, the through hole was illustrated as the opening, but the shape of the opening is not limited thereto, and various shapes such as notches and recesses can be used.

In addition, in each of the above-mentioned embodiments and modifications thereof, the case where the yoke 80 and the main body portions 422 and 412 on which the yoke 80 is disposed is caulked and fixed by the protrusions 422b and 411b has been exemplified. However, the yoke 80 and the main body parts 422 and 412 on which the yoke 80 is arranged can be fixed by methods other than crimping and fixing such as press-fit fixing.

In addition, the main body parts 412 and 422 shown in the above-mentioned second embodiment can also be provided with protrusions that quickly move the arc A generated when the contacts are opened. In this case, protrusions are provided on the upper parts of the main body parts 412 and 422 .

In addition, specifications (shape, size, layout, etc.) of the fixed contact part, the movable contact part, and other details can also be changed appropriately.

In addition, in this embodiment, the yoke 80 is fixed to the movable contact 422 , but the yoke 80 may be fixed to the fixed contact part 410 provided with the fixed contact 411 .

Claims (19)

1. An electromagnetic relay, wherein, The electromagnetic relay includes: an electromagnet arrangement having a coil; 1st contact; a second contact, which is opposite to the first contact in the front-rear direction, and can be moved relative to the first contact to separate from the contact; a first body portion having the first contact; a second main body having said second contact; a yoke fixed to the second body portion; and a fixing part that fixes the yoke to the second body part, The second main body has an opposing surface on a side where the first contact faces the second contact, and an arrangement surface on an opposite side of the opposing face, The arrangement surface has a specific region overlapping with the first main body when viewed along the front-rear direction, the yoke is configured to at least partially coincide with the specific area when viewed along the front-rear direction, The second main body portion on which the yoke is arranged is configured so that current flows through the specific region, The fixed part has: a protrusion provided on the second main body or the second contact of the second main body; and The abutting portion is provided on the yoke and is capable of abutting the protrusion. 2. The electromagnetic relay according to claim 1, wherein, The yoke and the second main body are fixed by caulking with the protrusion. 3. The electromagnetic relay according to claim 1 or 2, wherein, The protrusion is formed on the second main body. 4. The electromagnetic relay according to any one of claims 1 to 3, wherein, The protrusion is formed on the second contact of the second main body. 5. The electromagnetic relay according to any one of claims 1 to 4, wherein, The yoke has an opening for receiving the protrusion. 6. The electromagnetic relay according to any one of claims 1 to 5, wherein, The yoke and the second contacts included in the second main body are arranged in line in the front-rear direction. 7. The electromagnetic relay according to any one of claims 1 to 6, wherein, The second main body portion has a through hole through which a contact member forming the second contact passes, and a concave portion provided on the arrangement surface and accommodating the contact member. 8. The electromagnetic relay according to any one of claims 1 to 7, wherein, The second body part has a side surface provided continuously to the facing surface and the arrangement surface, The yoke has an arm portion arranged along the side surface. 9. The electromagnetic relay according to claim 8, wherein, The second main body has a notch for receiving the arm. 10. The electromagnetic relay according to any one of claims 1 to 9, wherein, In the state where the first contact is separated from the second contact, the shortest distance between the yoke and the first main body is the distance between the first main body and the second main body. above the shortest distance between them. 11. The electromagnetic relay according to any one of claims 1 to 10, wherein, The protrusion is spaced apart from the second contact of the second main body. 12. The electromagnetic relay according to any one of claims 1 to 11, wherein, The 1st contact is a fixed contact, The 2nd contact is a movable contact, said movable contact separates or contacts with respect to said fixed contact, The second main body is a movable contact and has the movable contact. 13. The electromagnetic relay according to any one of claims 1 to 11, wherein, The 1st contact is a movable contact, The 2nd contact is a fixed contact, said movable contact separates or contacts with respect to said fixed contact, The first main body is a movable contact and has the movable contact. 14. The electromagnetic relay according to any one of claims 1 to 11, wherein, The first contact includes a first fixed contact and a second fixed contact, The second contact has a first movable contact that is in contact with and separated from the first fixed contact and a second movable contact that is in contact with and separated from the second fixed contact, The first main body part has a first fixed contact side terminal and a second fixed contact side terminal, the first fixed contact side terminal has the first fixed contact, and the second fixed contact side terminal has the said 2nd fixed contact, The second main body is a movable contact and has the first movable contact and the second movable contact. 15. The electromagnetic relay according to claim 14, wherein, The yoke has: a first yoke, which is arranged on the side where the first movable contact is located; a second yoke disposed on the side where the second movable contact is located; and A connecting portion that connects the first yoke and the second yoke to each other. 16. The electromagnetic relay according to claim 15, wherein, The electromagnetic relay further includes a connection member that moves integrally with the movable contact according to excitation or de-excitation of the coil, The connecting member is disposed between the movable contact and the linking portion. 17. The electromagnetic relay according to claim 15 or 16, wherein, The movable contact has: a first side that is continuous with the facing surface and the configuration surface; and a second side surface, which is provided continuously to the facing surface and the arrangement surface, and is opposite to the first side surface, The first yoke has a first arm disposed on the first side surface, The second yoke has a second arm disposed on the first side surface. 18. The electromagnetic relay according to claim 17, wherein, The yoke has a third arm disposed on the second side surface. 19. The electromagnetic relay according to any one of claims 14 to 18, wherein, An end portion of the movable contact has a protruding portion protruding toward the first fixed contact side terminal or the second fixed contact side terminal.

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