JPS6216489B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multipolar reed relay that performs monostable operation, and its purpose is to make it bistable by simply replacing a single permanent magnet, even though it is a multipolar type. To provide a multipolar reed relay that can be operated and has extremely high compatibility in both operations.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments. In the figure, reference numeral 1 denotes a coil frame around which the coil 2 is wound around the outer periphery of the central body 11, which is a molded product of synthetic resin and has a groove 12 with an open top surface.
Flange portions 13, 13 are integrally formed at both ends, respectively. A common contact terminal 14 and a coil terminal 15 are inserted into each flange portion 13, 13, respectively, and an iron core 3 is disposed in the central body portion 11. The iron core 3 is housed in the groove 12, and the bent pieces 16, 16 at both ends are located in the flange parts 13, 13, respectively. Further, each flange portion 13, 13 has a pair of magnetic pole plates 5, 6, 5, 6 and leads 4, 4, respectively.
and will be provided. A recess 17 and a spacing piece 18 protruding into the recess 17 are provided on one side of each flange portion 13, and each magnetic pole plate 5, 6 is provided with fixed contact portions 7, 8 on one side. One piece is press-fitted into the recess 17 separated by the spacer piece 18 and attached. One of the magnetic pole plates 5 in each flange portion 13 has a piece on which the fixed contact terminal 19 extends, and covers one side of the coil 2 (in the illustrated example, one side of the upper surface), and the other magnetic pole plate 6 has the fixed contact terminal 19 extending therethrough. One piece formed to extend covers the upper surface of the other side of the coil 2. Although one piece of each of all the magnetic pole plates 5, 5, 6, and 6 is disposed on one side of the coil 2, the permanent magnet 10 is placed on top of the magnetic pole plates 5, 5 of each pair of magnetic pole plates 5, 6. Only the insulating sheet 20 is placed in between. Only the magnetic pole plates 5, 5 are strongly magnetized and have different polarities from each other. The free end of the lead 4 is positioned in the main gap 9 between each of the fixed contact portions 7 and 8 of the pair of magnetic pole plates 5 and 6 whose facing distance is determined by the spacing piece 18. Each lead 4 made of a magnetic material has a lead fixing piece 21 integrated with a common contact terminal 14 inserted into the flange portion 13.
The coil 2 is fixed to the coil 2 and arranged in a direction perpendicular to the axial direction of the coil 2, with its side facing the end surface of the iron core 3 with a small gap therebetween. 22 is an insulating sheet. These are placed on a base 23 and covered with a case 24 made of magnetic material.

Thus, each lead 4 whose free end is disposed within the main gap 9 is connected to the permanent magnet 10 when the coil 2 is not energized.
is in contact with the magnetic pole plate 5 which is magnetized by
When the coil 2 is energized and excited, the lead 4 is connected to the magnetic pole plate 5 which is in contact with the lead 4 via the iron core 3.
By being magnetized to the same polarity as the lead 4, the lead 4 comes into contact with the other magnetic pole plate 6 and switches the contact point. Thereafter, when the coil 2 is de-energized, the lead 4 is attracted back to the magnetic pole plate 5.

Such monostable operation requires that the magnetic attraction force that the magnetic pole plate 5 exerts on the lead 4 is stronger than the sum of the spring load of the lead 4 and the magnetic attraction force that the magnetic pole plate 6 exerts on the lead 4, so this condition is satisfied. If the range satisfies the above, use a permanent magnet 10 as shown in FIG.
It may also be possible to install a part of it. In this case, instead of the 4-pole magnetized permanent magnet 10 placed only on the magnetic pole plates 5, 5, 8-pole magnetized permanent magnets 10 with 4 poles each on the front and back surfaces are used. In this 8-pole magnetized permanent magnet 10, as shown in FIG. If the magnetic pole plates 5 and 6 are magnetized with the same strength, the magnetic attraction forces exerted on the leads 4 by the magnetic pole plates 5 and 6 will be equal, resulting in bistable operation.

As described above, the present invention arranges one piece of each pair of magnetic pole plates constituting the main gap at both ends of the coil frame on one side of the coil, and places a permanent magnet on this one side only on the magnetic pole plate on one contact side. Because they are placed close to each other, it is possible to obtain monostable operation with a single permanent magnet even though it is a multipolar type, and it is also possible to obtain a bistable operation type simply by changing the permanent magnet. It has extremely high compatibility.

[Brief explanation of the drawing]

FIG. 1 is a broken perspective view of one embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a broken plan view of the same, FIG. 4 is a broken front view of the same, and FIG. A cross-sectional view taken along line A-A in the figure, and Figure 6 is B-B in Figure 3.
Line sectional view, Figure 7 is a CC line sectional view in Figure 3,
FIG. 8 is a plan view of the main parts of another embodiment, and FIG. 9 is a plan view of the main parts when bistable is used, in which 1 is a coil frame, 2 is a coil, 3 is an iron core, 4 is a lead, 5,6
is a magnetic pole plate, 7 and 8 are fixed contact parts, 9 is a main gap part,
10 indicates a permanent magnet.

Claims (1)

[Claims] 1. An iron core is placed in a coil frame around which the coil is wound around the outer periphery of the central part, and leads are placed at both ends of the coil frame to be magnetically connected to both ends of the iron core, and a pair of leads are placed at each end of the coil frame. The fixed contact portions provided on the magnetic pole plates to be disposed are made to face each other to form a pair of main gaps, each free end of the pair of leads is positioned in this main gap, and one piece of each magnetic pole plate is placed on one side of the coil. A multi-polar magnet is arranged in the coil frame, and a permanent magnet is arranged in the vicinity of one of the pairs of magnetic pole plates arranged at both ends of the coil frame, which extends from one of the magnetic pole plates. Pole reed relay.