JPS61218032A - Polar relay - 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 polarized relay, and more particularly to a polarized relay in which an armature is swingably disposed about its central portion as a fulcrum.

[Background technology]

In general, in this type of polarized relay in which the armature is arranged so as to be able to swing freely around the center of the armature, a movable contact spring piece is integrally connected to the armature. In this case, the movable contact spring piece is arranged so as to overlap the armature in the direction of movement of the armature, so #!
There was a problem in that the poles became bulky in the direction of movement, making the relay larger. In addition, with this configuration, the armature and the movable contact spring piece cannot be integrally molded at the same time, so it is necessary to connect the armature and the movable contact spring piece during assembly, which increases the number of man-hours. was there. [Object of the Invention] The present invention has been made in view of the above points, and its main purpose is to provide a compact polarized relay that does not increase the bulk of the relay. Another object of the present invention is to provide a polarized relay in which an armature block is formed by integrating an armature and a movable contact spring piece, thereby facilitating assembly work. . [Disclosure of the Invention] (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 FIG. 1, the casing 1 has a box-shaped base 11 that is open upward, and a box-shaped base 11 that is open downward, and is fitted from above the base 11 so as to cover the outside of the side wall of the base 11. It is composed of a cover 12. The base 11 is a molded product made of an insulating material such as a synthetic resin and is formed into a substantially rectangular parallelepiped, and has recesses 13 with open upper and inner surfaces in the center of the longitudinal direction in both walls in the middle direction. It is formed. A contact piece 21 faces the bottom of each recess 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. rib 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 side wall in the 11 direction of the base 11 and protrudes downward. Notches 15 are formed in both longitudinal walls of the base 11 at the center in the width direction, and are open upwardly and on the front and back sides of the side walls, and a pair of coils are inserted from the bottom of each notch 15. A terminal coupling piece 26 is provided to protrude upward. The coil terminal coupling piece 26 is formed of a conductive plate integrally with a coil quadruple piece 27 that is exposed on the outside of both side walls in the width 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 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 earthen 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 casing 1 formed by a base 11 and a cover 12. As shown in FIG. 3, the coil cable 3 has a substantially U-shaped iron core 31 that is open upward, and a coil 32 is wound around the horizontal pieces, and the legs of the iron core 31 are each made of an insulating material. It is covered with the formed flange 33 and has a shape in which the tip of the leg piece is exposed from a part of the curved 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 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 coil terminal coupling piece 26 each protrude upwardly from the upper end of the leg piece of the iron core 31, and since the coil terminal coupling piece 26 is provided in a protruding manner within the notch 15, the coil Terminal coupling piece 26 and coil 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 is plate-shaped, and has a groove 41 having a substantially semicircular cross section running toward the inside of the base 11 in the center of its 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. The magnetic poles at both ends are the iron core 3 of the coil block 3.
It is interposed between both legs in such a way that it abuts the inner surface of each leg of the first 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 4th tXI, on the lower surface of the armature 51, a protrusion 54 having a substantially semicircular cross section and running in the width direction of the armature 51 is formed. The movable contact spring piece 52 is an elongated electrically conductive leaf spring,
A support piece 55 whose tip end is formed in a substantially T-shape is integrally protruded from the center portion in the longitudinal direction in the width direction. In addition, slits 56 are formed at both ends in the longitudinal direction, and the ends of the movable contact spring pieces 52 are easily bent. i
A cutout 57 is formed which opens into the hole. A support piece 55 is provided to protrude from the inner end of the second 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, since the movable contact spring piece 52 is fixed by the spring support body 53 at the central portion in the longitudinal direction, and the vertical support piece 55 is provided protruding from the spring support body 53, the movable contact spring piece 52 is Spring force is applied to both ends of the direction and the support piece 55 independently. After this, the pole block 5 is constructed by fitting the protrusion 54 provided on the lower surface of the armature 51 into the groove 41 of the magnet piece 4, and fitting the support piece 55 into the opening 13 provided on the 1m wall of the base 11. The armature block 5 is disposed at a fixed position in the base 11, and the armature block 5 is a supporting piece 5.
It can swing freely around 5. 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. Furthermore, since the plate-shaped support piece 55 is configured as a rotating wheel of the armature block 5, the support piece 55 is
Since a twist occurs in the armature and a spring force corresponding to this twist acts on the armature block 5, the attractive force acting on the armature 51 can be adjusted by the spring force caused by the twist of the armature 51, as shown in FIG. Further, the contact pressure between the fixing liquid α23 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 suction force can be adjusted by adjusting the shape and dimensions of the support piece 55. The suction force can be mutually and independently muted. Furthermore, since the movable contact spring piece 52 applies independent spring force to each end in the longitudinal direction, by adjusting the shape and dimensions of both ends of the movable contact spring piece 52, the contact point for both fixed contacts 23 can be adjusted. It is possible to adjust the pressure independently of each other, making it easy to adjust the contact pressure. Moreover, since the movable contact spring pieces 52 are disposed on both sides of the armature 51 in the width direction on substantially the same plane as the armature 51, the overall thickness in the vertical direction can be reduced. In the above manner, the coil plate O-/3 is installed in the base 11.
A cover 12 is fitted onto the base 11 with the magnet piece 4 and armature block 5 housed therein. 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 groove 41 of the magnet piece 4 has a substantially semicircular cross section, but the cross section may be substantially V-shaped and 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 core 31 according to the direction of magnetization, and the armature block 5 swings. A closed magnetic path of core 31→armature 51→magnet piece 4→iron core 31 is formed, and one longitudinal end of movable contact spring piece 52 contacts the corresponding fixed contact 23. When the current to the coil 32 is stopped in this state, the closed magnetic path is maintained by the magnetic force of the magnet piece 4, 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 end in the longitudinal direction contacts the corresponding fixed contact 23 . Even in this state, the current state is maintained after the current supply is stopped, and so-called bistable operation can be performed.

【Effect of the invention】

As described above, in the present invention, a movable contact spring piece that is long in the direction of connecting the magnetic poles of the iron core is disposed on the side of the armature in substantially the same plane as the flat armature, and the movable contact spring piece is A fixed contact is provided at a fixed position on the casing corresponding to each end in the longitudinal direction, and a spring support is interposed between the armature and the movable contact spring piece to connect them together. This has the advantage that the armature does not become bulky in the direction of movement, and the relay can be made flat as a whole, leading to miniaturization of the relay. In addition, the armature and the movable contact spring piece are disposed on substantially the same plane, and a spring support is interposed between the armature and the movable contact spring piece to connect them together to form an armature block. Because of this structure, the armature and movable contact spring piece can be integrally molded at the same time, and the armature and movable contact spring can be handled as an integrated armature block, making assembly work easy. This has the advantage of being

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 12 is a partially omitted plan view of the same with the cover removed, Fig. vi3 is a sectional view of the same, and Fig. 4 is a connection used in the same. FIG. 5 is a perspective view of the bottom side showing the pole block, and is an explanatory view of the same operation. 1 is a casing, 3 is a coil 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 plate, 25 is a fixed terminal piece, 26 is a coil terminal coupling piece, 27 is a coil terminal piece, 31 is an iron core, 32 is a coil, 33 is a collar, 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 2 113 Figure 1! 4 Procedural amendment (voluntary) June 25, 1985

Claims (1)

[Claims] (1) A coil block in which a coil is wound around a roughly U-shaped iron core, and a coil block that is interposed between the magnetic poles of the iron core, with both ends corresponding to the magnetic poles magnetized to the same polarity, and the center between the two magnetic poles. A magnet piece whose parts are magnetized with different polarities, and a flat plate whose ends are opposite to the magnetic poles of the iron core and whose central part is swingably pivoted to the center of the magnet piece and is orthogonal to the direction of movement. In a polarized relay in which an armature block having a circular armature is housed in a casing, a movable contact spring piece that is long in the direction of connecting the magnetic poles of the iron core is located on the side of the armature in substantially the same plane as the armature. A fixed contact is provided at a fixed position on the casing corresponding to each longitudinal end of the movable contact spring piece, and the armature and the movable contact spring piece are integrally connected between the two. A polarized relay characterized by having a spring support interposed therein.