JPS61218028A - Relay apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to a relay device, and more particularly, a relay device having a box-shaped base that is open upward, and a coil block configured by winding a coil around an iron core inside the base. The present invention relates to a relay device in which a plurality of terminal pieces, which are connected to relay contacts and coils, protrude from opposing WIgjA surfaces of a base. [Background technology J] Generally, a coil block is housed in a box-shaped base that is open upward, and a plurality of terminal pieces connected to the relay contacts and the coil are protruded from a pair of opposing sides of the base. ,
In a so-called dual in-line package type relay device, if all the connection parts between the relay contacts and the coil terminals and the terminal pieces are arranged on the side surface where the terminal pieces are lined up, there is a problem that the base becomes large. [Objective of the Invention 1 The present invention has been made in view of the above-mentioned points, and its main purpose is to ensure that the coil terminal coupling piece connected to the coil terminal is not adjacent to the surface on which the terminal pieces are lined up. The purpose is to provide a relay device with a smaller base by providing them on mating surfaces, and another purpose is to facilitate welding or soldering of the coil terminal and the coil terminal coupling piece. An object of the present invention is to provide a relay device with high productivity. [Disclosure of the Invention 1 (Examples) Examples of the present invention will be described below based on the drawings. In the following description, a polarized relay using the polarized electromagnetic device of the present invention will be exemplified. As shown in Figure 1, Cushing 1 opens upward! P.L.
The cover 12 is comprised of a box-shaped base 11 and a box-shaped cover 12 that is open downward and is fitted from above the base 11 to cover the outside of the side wall of the base 11. The base 11 is a molded product of an insulating material such as a synthetic resin and is formed into a substantially rectangular parallelepiped, and Nissin 13 with open upper and inner surfaces at the center in the longitudinal direction is formed on both walls in the middle direction. It is formed. A contact piece 21 faces the bottom surface of each new 13, and the contact piece 21 is integrally formed of a conductive plate with a common terminal piece 22 that is exposed outside the middle side wall of the base 11 and projects downward. . Lips 14 running vertically and having upper ends located below the upper surface of the base 11 are formed at the four inner corners of the base 11, respectively. Reply 1
4 has a fixed contact plate 2 having a fixed contact 23 on the upper surface.
4 overlap, and the fixed contact plate 24 is integrally formed of a conductive plate with a fixed terminal piece 25 that is exposed outside the middle side wall of the base 11 and projects downward. A notch 15 is formed on both sides of the base 11 in the longitudinal direction at the center in the width direction, and is open to the top and to the front and back of the side walls.
A pair of coil terminal coupling pieces 26 is provided to protrude upward from the bottom surface of each notch 15, respectively. The coil terminal coupling piece 26 is integrally formed of a conductive plate with a fill terminal piece 27 that is exposed to the outside of both inner side walls of the base 11 and protrudes downward. In this way, the contact piece 21 and the common terminal piece 22, the fixed contact plate 24 and the fixed terminal piece 25, and the coil terminal coupling piece 26 and the coil terminal piece 27 are each formed integrally with a conductive plate, and the base 11 and each conductive It is integrated with the plate by insert molding. The conductive plate is routed within the side wall of the base 11 so that the conductive plate is installed within the side wall of the base 11 over substantially the entire length thereof. Therefore, the side wall of the base 11 is reinforced by the conductive plate, which increases the strength of the base 11 due to its box shape. Like the base 11, the cover 12 is a molded product made of an insulating material such as synthetic resin and is formed into a substantially rectangular parallelepiped shape, and has four partition pieces 16 projecting downward from the inner peripheral surface of the upper wall. ing. The partition piece 16 is formed along the longitudinal direction of the cover 12. A coil block 3, a magnet piece 4, and an armature block 5 are disposed within a cushioning 1 formed by a base 11 and a cover 12. As shown in FIG. 3, the coil block 3 has a substantially U-shaped iron core 31 that is open upward, and a coil 32 is wound around the horizontal pieces, and each leg piece of the iron core 31 is made of an insulating material. The crocodile 33 is covered with a tsuba 33 with the tips of the legs exposed from one place on the circumferential surface of the crocodile 33. A pair of coil terminals 34 connected to the coil 32 are provided corresponding to each collar 33, and are bent so as to protrude upward from the upper end of the collar 33 and come into contact with the coil terminal coupling piece 26. With the coil block 3 housed in the base 11, the coil terminal 34 and the coil terminal coupling piece 26 are electrically and mechanically coupled by welding, soldering, or the like. Here, the coil terminal 34 and the 1-fill terminal coupling piece 26 each protrude upwardly from the upper end of the leg piece of the iron core 31, and the coil terminal coupling piece 26 is provided to protrude into the notch 15. , coil terminal coupling piece 26 and fill terminal 34
and are exposed from the base 11, making it easy to weld or solder the two together. The magnet pieces 4 are interposed between the exposed portions of the legs of the iron core 31 so that their magnetic poles are in contact with each other. The magnet piece 4 has a plate shape, and a groove 41 having a substantially semicircular cross section and running in the width direction of the base 11 is formed in the center of the upper surface. The upper surface of the magnet piece 4 is thickest at the center in the longitudinal direction of the base 11 (it is an inclined surface 42 that is inclined so that the thickness gradually decreases toward the ends). Both ends of the magnet piece 4 in are magnetized to the same polarity, and the center part is magnetized to different magnetic poles.In other words, if both ends are N poles, the center part is S
It is magnetized so that it becomes a pole. Then, the magnetic pole of the WIlt portion is interposed between the two legs of the iron core 31 of the coil block 3 in such a manner that it comes into contact with the inner surface of each leg. The armature block 5 includes an armature 51 made of a magnetic material and formed into a substantially rectangular flat plate shape, and movable contact spring pieces 5 disposed substantially on the same plane as the armature 51 on both sides of the armature 51 in the width direction.
2, and a spring support 53 which is a molded article of an insulating material such as synthetic resin and is integrally molded with the armature 51 and the movable contact spring piece 52. Armature 51
As shown in FIG. 4, a protrusion 54 having a substantially semicircular cross section is formed on the lower surface of the armature 51 and extends toward the center of the armature 51. As shown in FIG. The movable contact spring piece 52 is an elongated electrically conductive leaf spring,
A supporting piece 55 having a substantially T-shaped distal end protrudes toward the center in the longitudinal direction is integrally provided. Furthermore, slits 56 are formed at both ends in the longitudinal direction, each opening at the tip, so that the tip of the movable contact spring piece 52 is easily bent. A notch 57 is formed in the spring support 53 and opens at both ends of the armature 51 in the middle direction. A support piece 55 is provided to protrude from the inner end of this notch 57, and a tip end of the support piece 55 protrudes outward from the spring support body 53 in the middle direction of the armature 51. That is, since the movable contact spring piece 52 is fixed at the center portion in the longitudinal direction by the spring support 53 and the support piece 55 is provided protruding from the spring support 53, the movable contact spring piece 52 is fixed in the longitudinal direction. Spring force is applied to both ends of the support piece 55 and the support piece 55 independently. This armature block 5 has a protrusion 54 provided on the lower surface of the armature 51 accommodated in the groove 41 of the magnet piece 4, and a support piece 55 placed in the recess 1 provided on the side wall of the base 11.
The armature block 5 is disposed at a fixed position in the base 11 by fitting the armature block 5 into the support piece 55.
It can swing freely around the axis. In this way, since the support piece 55 integrally formed with the movable contact spring piece 52 supports the armature block 5, the movable contact spring piece 52 serves both as a conductive part and a support part. This leads to a reduction in the number of component parts.6 Also, by using the planar support piece 55 as the rotation axis of the armature block 5,
As the armature block 5 swings, the supporting piece 55 is twisted, and the spring force against this twisting acts on the #R pole plate 5. As shown in FIG. 5, this is caused by the twisting of the armature 51. The spring force can adjust the attractive force acting on the armature 51, and the spring force of the movable contact spring piece 52 can adjust the open contact pressure between the fixed contact 23 and the movable contact spring piece 52. As a result, the contact pressure can be adjusted by adjusting the shape and dimensions of both ends in the longitudinal direction of the movable contact spring piece 52, and the suction force can be adjusted by adjusting the shape and dimensions lIIm of the support piece 55. The suction force can be adjusted separately and independently. Furthermore, since the movable contact spring piece 52 has independent spring forces applied to both ends in the longitudinal direction, the movable contact spring piece 52
By adjusting the shape and dimensions of both ends of the
It is possible to independently adjust the contact pressure and α pressure to WJIW1, making it easy to adjust the contact pressure. Further, since the movable contact spring pieces 52 are disposed on both sides of the armature 51 in the middle direction and on substantially the same plane as the armature 51, the overall thickness in the vertical direction can be reduced. As described above, the cover 12 is fitted onto the base 11 with the coil block 3, magnet piece 4, and armature block 5 housed in the base 11. The four partition pieces 16 protruding from the inner peripheral surface of the cover 12 are
As shown in FIG. 2, the cover 12 is fitted onto the base 11 and inserted into the gap between the armature 51 and the movable contact spring piece 52.
By interposing an insulating partition piece 16 between the two, a large insulation distance can be secured between the two. In the above example, the recessed groove 41 of the magnet piece 4 has a substantially semicircular cross section, but the cross section may also be a substantially square square shape that is open upward. In this case, the protrusion 54 formed on the armature 51 may have a thin blade shape. With the above configuration, when the coil 32 is energized, one end of the armature 51 in the longitudinal direction is attracted to one leg of the iron g31 according to the direction of magnetization, the armature block 5 swings, and the iron core A closed magnetic path of 31→armature 51→magnet piece 4→iron core 31 is formed, and one end of the movable contact spring piece 52 in the longitudinal direction comes into contact with the corresponding fixed contact 23. When the coil 32 is de-energized in this state, the magnetic force of the magnet piece 4 maintains the closed magnetic path as it is, and the armature 51 is connected to the iron core 3.
1 is maintained in contact with one side. Furthermore, if the current direction to the coil 32 is reversed, the armature 51 is attracted to the other leg piece of the iron core 31, and the movable contact spring piece 52
The other longitudinal end of contacts the corresponding fixed @breath 23. Even in this state, the state is maintained after the current supply is stopped, and so-called bistable operation can be performed. [Effects of the Invention] As described above, the present invention provides a coil block with a coil terminal connected to the coil and protruding upward from the upper surface of the coil block. An open notch is formed on the front and back sides of the upper circumferential wall, and the bottom of the notch is electrically connected to a coil terminal piece that protrudes from the side surface of the base and protrudes upward from the top surface of the coil block. A coil terminal coupling piece is provided protruding to connect the coil terminal and the coil terminal coupling piece, and the coil terminal and the coil terminal coupling piece are mechanically and electrically coupled by welding or soldering. By being provided on adjacent surfaces, the juxtaposition surfaces allow the base to be made smaller, and have the advantage that the entire relay can be made smaller. *In addition, since the coil terminal and coil terminal coupling piece protrude above the top surface of the coil block, and the coil terminal coupling piece is provided in a notch provided in the base, welding of the coil terminal and coil terminal coupling piece is prevented. It is easy to perform II connection or solder connection, and has the advantage that even if it is a small relay, the work is easy and high productivity can be obtained.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view showing one embodiment of the present invention, Figure 2 is a partially omitted plan view of the same with the cover removed, Figure @3 is a sectional view of the same, and Figure 4 is used for the same. FIG. 5 is a bottom perspective view showing the armature block, and FIG. 5 is an explanatory diagram of the same operation. 1 is a casing, 3 is a fill block, 4 is a magnet piece, 5
is the armature block, 11 is the base, 12 is the cover, 13
14 is a recess, 15 is a notch, 16 is a partition piece, 2
1 is a contact piece, 22 is a common terminal piece, 23 is a fixed contact, 24
is a fixed terminal board, 25 is a fixed terminal piece, 26 is a fill terminal coupling piece, 2.7 is a coil terminal piece, 31 is an iron core, 32 is a coil, 33 is a crocodile, 34 is a coil terminal, 41 is a groove, 42 51 is an inclined surface, 51 is an armature, 52 is a movable contact spring piece, 53 is a spring supporter, 54 is a protrusion, 55 is a support piece, 56 is a slit, and 57 is a notch. Agent Patent Attorney Ishi 1) Chief 7 Figure 2 Figure 3! 1! 4 Procedural amendment (voluntary) June 25, 1985 Director of the Patent Office [Yes] 1. Indication of case 1985 patent jllIIfjS60096 2. Name of invention Relay device a! 3. Relationship with the case of the person making the amendment Patent applicant address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (58
3) Matsushita Electric Works Co., Ltd. Representative Sadao Fujii 4゜ Agent postal code 530 5.1Fll Date of original order Detailed explanation of the invention increased by the 66 amendment Details
Document 1, Title of the invention Relay device 2, Claims ・,t,-(1)
It has a box-shaped base that is open upwards, and a coil block consisting of a coil wound around an iron core is housed in the base, and a notch that extends upwardly into the peripheral wall of the base and is open on the front and back sides of the peripheral wall. is formed, and the coil 8 is attached to the 1st part.
Coil Ro! A relay device characterized in that a coil terminal and a coil terminal coupling piece are mechanically and electrically coupled by welding or soldering. 3. Detailed Description of the Invention [Technical Field] The present invention relates to a relay device. [Background Art] Relay devices generally require work to mechanically and electrically connect the coil terminals provided on the coil block and the coil terminal coupling pieces provided on the base by welding or soldering. Therefore, in the case of a small relay device, it is difficult to insert the welding electrode and half iron into the base, making assembly work difficult. [Objective of the Invention 1 The present invention has been made in view of the above-mentioned points, and its object is to facilitate welding or soldering of a coil terminal and a coil terminal coupling piece. The purpose of the present invention is to provide a relay device with high productivity. [Disclosure of the Invention] (Examples) Examples of the present invention will be described below based on the drawings. As shown in FIG. 1, the casing 1 includes a box-shaped base 11 and a box-shaped cover 12 that is fitted over the base 11. As shown in FIG. The base 11 is a molded product made of an insulating material such as synthetic resin, and a recess 13 is formed in the center of the longitudinal direction of the base 11 on both side walls.
are formed respectively. Each recess 13 is provided with a contact piece 21, and the contact piece 21 is integrally formed of a conductive material with a common terminal piece 22 that is exposed outside the middle side wall of the base 11 and projects downward. Lips 14 are formed at the four inner corners of the base 11, respectively. The lip 14 is provided with a fixed liquid and an α plate 24 having a fixed contact 23, and the fixed contact plate 24 is integrally conductive with a fixed terminal piece 25 that is exposed outside the middle side wall of the base 11 and protrudes downward. It is made of wood. Notches 1 are provided on both longitudinal walls of the base 11.
5 is formed, and a pair of coil terminal coupling pieces 26 are provided protruding from the bottom surface of each notch 15, respectively. The coil terminal coupling piece 26 is integrally formed of a conductive material with a coil terminal piece 27 that is exposed to the outside of both walls in the middle direction of the base 11 and protrudes downward. In this way, the contact piece 21 and the common terminal piece 22, the fixed contact plate 24 and the fixed terminal piece 25, and the coil terminal coupling piece 26 and the coil terminal piece 27 are each integrally formed of a conductive material, and the base 11 and each conductive The material is integrated by insert molding. The conductive material is routed within the side wall of the base 11, so that the conductive material is placed inside the side wall of the base 11 over almost the entire length of the base 11.6 Therefore, the side wall of the base 11 is reinforced with the conductive material. This, coupled with the fact that the base 11 is box-shaped, increases the strength. The cover 12 is a molded product made of an insulating material such as synthetic resin, and has four partition pieces 16 protruding from the inner bottom surface. The partition piece 16 is formed along the longitudinal direction of the cover 12. A coil block 3, a permanent magnet 4, and an armature block 5 are disposed within a casing 1 formed by a base 11 and a cover 12. As shown in FIG. 3, the coil block 3 has a coil 32 wound around a substantially U-shaped iron core 31 that is open upward, and both magnetic poles of the iron core 31 are each made of an insulating material. It is covered with a flange 33 and has a shape in which the tips of both magnetic poles are exposed from the circumferential surface of the flange 33. A pair of coil terminals 34 connected to the coil 32 are provided corresponding to each collar 33, and are bent so as to protrude above the collar 33 and come into contact with the coil terminal coupling piece 26. With the fill block 3 housed in the base 11, the coil terminal 34 and the fill terminal coupling piece 26 are coupled electrically or mechanically by welding, soldering, or the like. Here, the coil terminal coupling pieces 26 of the coil terminal 34 each protrude upwardly from both magnetic poles of the iron core 31, and since the coil terminal coupling pieces 26 are provided protruding within the notch 15, the coil terminal The child coupling piece 26 and the coil terminal 34 are exposed from the base 11, making it easy to weld or solder the two together. The permanent magnet 4 is interposed between both magnetic poles of the iron core 31 so that the magnetic poles are in contact with each other. The permanent magnet 4 has a plate shape, and a groove 41 having a substantially semicircular cross section and running toward the inside of the base 11 is formed in the center of the surface. The surface of the permanent magnet 4 is an inclined surface 42 which is thick at the intermediate portion in the longitudinal direction of the base 11 and is inclined so that the thickness gradually decreases toward the n portion. Further, both ends of the permanent magnet 4 in the longitudinal direction of the base 11 are magnetized with the same polarity, and the middle part is magnetized with different magnetic poles. That is, if both ends are north poles, the middle part is magnetized to be south pole. However, the magnetized position of the intermediate portion may be shifted toward one end, and in that case, monostable operation can be achieved. The magnetic poles at both ends of the permanent magnet 4 are connected to the iron core 3 of the coil block 3.
It is interposed between the two legs in such a way that it abuts the inner surface of each magnetic pole of the first pair. Here, a required gap may be interposed between the magnetic pole of the iron core 31 and the magnetic poles at both ends of the permanent magnet 4, and a difference may be provided between the two gaps in order to obtain the required magnetic characteristics. The armature block 5 includes a magnetic armature 51 formed into a flat plate, movable contact spring pieces 52 disposed on both sides of the armature 51, and integrally formed with the armature 51 and the movable contact spring pieces 52. The spring support body 53 is a molded article of an insulating material such as a synthetic resin. 4! −
As shown in FIG. 4, on the back surface of the pole element 51, a protrusion 54 having a substantially semicircular cross section is formed that runs toward the center of the armature element 51. The movable contact spring piece 52 is an electrically conductive plate spring, and a support piece 55 having a substantially T-shaped distal end protruding toward the middle is integrally provided at the center portion in the longitudinal direction. In addition, there are slots 5 each having an opening at both ends in the longitudinal direction.
6 is formed so that the tip of the movable contact spring piece 52 is easily bent. A notch 57 is formed in the spring support 53 and opens at both Nli edges of the armature 51 in the middle direction. A support piece 55 is provided to protrude from the inner end of the notch 57, and the tip of the support piece 55 protrudes outward from the spring support 53 in the width direction of the armature 51. That is, the movable contact spring piece 52 is attached to the spring support 5 at the center in the longitudinal direction.
3, and the support piece 55 is fixed by the spring support 53.
Since the movable contact spring piece 5 protrudes from the
2 and the support piece 55 independently apply a spring force. After this, the pole block 5 connects the protrusion 54 provided on the back side of the armature 51 to the permanent magnet 4.
At the same time, the support piece 55 is placed in the groove 41 of the base 11.
The armature block 5 is disposed at a fixed position within the base 11 by fitting into a recess 13 provided in the side wall of the armature block 5, and the armature block 5 can swing freely around the support piece 55. In this way, since the support piece 55 integrally formed with the movable contact spring piece 52 supports the armature block 5, the movable contact spring piece 52 serves both as a conductive part and a support part. This leads to a reduction in the number of component parts. In addition, since the planar support piece 55 is configured to be the center of swing of the armature block 5, the armature block 5 can swing freely by separating the torsion of the support piece 55. There are no or almost no parts that cause friction between the armature block 5 and the other members, and the starting force required to overcome the static frictional force at the time of initial movement of the armature block 5 is reduced, thereby obtaining a highly sensitive polarized electromagnet. This is possible. On the other hand, since the spring force caused by the twisting of the support piece 55 acts on the armature block 5, the attractive force acting on the armature 51 can be adjusted by the spring force caused by the twisting of the armature 51, as shown in FIG. Further, the contact pressure between the fixed contact 23 and the movable contact spring piece 52 can be adjusted by the spring force of the movable contact spring piece 52. As a result, the contact pressure can be adjusted by adjusting the shape and dimensions of both longitudinal ends of the movable contact spring piece 52, and the shape and dimensions of the support piece 55 can be adjusted.
Since the suction force can be adjusted by the f node, the contact pressure and the suction force can be adjusted separately and independently. Furthermore, since the movable contact spring piece 52 applies independent spring force to each end in the longitudinal direction, the shapes and dimensions of both ends of the movable contact spring piece 52 are divided into 14 knots, so that both fixing points 23 It is possible to adjust the contact pressure for each independently, making it easy to adjust the contact pressure. Further, the movable contact spring piece 52 is connected to the armature 51.
Since it is disposed on substantially the same plane as the armature 51 on both sides in the width direction, the overall thickness in the vertical direction can be reduced. Although the movable contact spring pieces 52 are provided on both sides of the armature 51, they may be provided only on either side. As described above, the coil block 3 and the permanent magnet 4 are placed in the base 11. A cover 12 is fitted onto the base 11 with the pole block 5 housed therein. As shown in FIG. 2, the four partition pieces 16 protruding from the inner bottom surface of the cover 12 are connected to #J: a pole 51 and a movable contact spring piece 52, respectively, when the cover 12 is fitted onto the base 11. An insulating partition piece 16 is inserted into the gap between the armature 51 and the movable contact spring piece 52, so that a large insulation distance can be maintained between the two. In the above example, the recessed groove 41 of the permanent magnet 4 has a substantially semicircular cross section, but the cross section is approximately
It is also a good shape. In this case, the protrusion 54 formed on the armature 51 may have a thin blade shape. J:! - In addition to the above-mentioned shapes, any shape can be used as long as the permanent magnet 4 and the armature 51 are fit together so that the #& pole piece 51 is oscillatedly guided. good. Further, the permanent magnet 4 and the armature 51 may be fitted together in constant contact with each other, or may be fitted only when external vibrations or shocks are applied. With the above configuration, when the coil 32 is energized, the #! One end of the pole 51 in the longitudinal direction is the iron core 31
The armature block 5 swings as it is attracted to one magnetic pole of the
A closed magnetic path is formed from the iron core 31 to the armature 51 to the permanent magnet 4 to the iron core 31, and one longitudinal end of the movable contact spring piece 52 contacts the corresponding fixed contact 23. When the coil 32 is turned off in this state, the magnetic force of the permanent magnet 4 maintains the closed magnetic path as it is, and the armature 51 remains in contact with one of the iron cores 31. Furthermore, if the current direction to the fill 32 is reversed, the armature 51 is attracted to the other magnetic pole of the iron core 31, and the other longitudinal end of the movable contact spring piece 52 connects to the corresponding fixed contact 23.
come into contact with. Even in this state, the original state is maintained after the energization is stopped, and so-called bistable operation can be performed. [Effects of the Invention] As described above, the present invention has a box-shaped base that is open upward, and a coil block composed of eight fills wrapped around an iron core is housed in the base, and the peripheral wall of the base is A cutout is formed upwardly and open on the front and back sides of the peripheral wall, and a fill terminal coupling piece is protruded into the cutout, and the coil terminal provided on the coil block and the coil terminal coupling piece are connected by welding or soldering. Since they are mechanically and electrically connected, it is easy to weld or solder the coil terminal and coil terminal coupling piece, making it easy to work and highly productive even for small relays. This has the advantage that the following can be obtained. 4. Brief description of the drawings FIG. 1 is an exploded illusion diagram showing an embodiment of the present invention, FIG. 2 is a partially omitted plan view of the same with the cover removed, and FIG. 3 is a sectional view of the same. FIG. 4 is a bottom perspective view showing the armature block used in the above, and FIG. 5 is an explanatory diagram of the operation of the same. 3 is a coil block, 11 is a base, 15 is a notch, 2
6 is a coil terminal coupling piece, 31 is an iron core, 32 is a coil, 3
4 is a coil terminal.

Claims (1)

[Claims] (1) It has a box-shaped base that is open upwards, and a coil block consisting of a coil wrapped around an iron core is housed inside the base, as well as multiple terminals connected to relay contacts and coils. In a relay device in which pieces protrude from a pair of opposing sides of a base, the coil block is provided with a coil terminal connected to the coil and protruding upward from the top surface of the coil block, and the terminal pieces are arranged on the base. A notch is formed in the peripheral wall adjacent to the side surface and is open upward and on the front and back sides of the peripheral wall, and the bottom of the notch is electrically connected to a coil terminal piece protruding from the side surface of the base, and the coil block is electrically connected to the coil terminal piece protruding from the side surface of the base. 1. A relay device characterized in that a coil terminal coupling piece is provided that projects upward from an upper surface, and the coil terminal and the coil terminal coupling piece are mechanically and electrically coupled by welding or soldering.