JPS5820447B2 - lead relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves inserting a lead 3 whose base end is fixed into a coil frame 2 around which a coil 1 is wound, and forming a contact space 4 of the coil frame 2 where the tip of the lead 3 is located. A fixed contact plate 5°5 facing the tip of the lead 3 is attached to the side wall of the coil frame 2, and a permanent magnet 6 is attached to the side wall of the contact space 4, and a permanent magnet 6 is attached to the end of the coil frame 2 so as to close the contact space 4. A reed relay characterized by fitting a shielding fitting T,
The purpose is to provide a reed relay that can sufficiently exhibit the absorption effect of a permanent magnet and that can improve the internal cleaning effect within the coil frame.

The present invention will be explained in detail below with reference to Examples.

The coil frame 2 is a coil frame half body 2a formed of synthetic resin,
2b are integrated so that the inside is hollow, and a coil winding part 8 with a narrow outer diameter is provided in the center of the coil frame 2, and a contact space is provided at one end of the coil frame 2. 4 is provided.

On both side walls of this contact space 4 are fixed contact plates 5 in an inverted shape.
, 5 are mounted so as to face each other, and fitting recesses 9, 9 are provided on the outer surface of the coil frame 2 on the side where the contact space 4 is provided.

Further, the coil 1 is wound around the coil winding portion 8 of the coil frame 2, and the end of the coil frame 2 opposite to the contact space 4 has a lead mounting plate in a direction perpendicular to the longitudinal direction of the coil frame 2. 17 is inserted through the coil frame 2 so that the tip is located between the fixed contact plates 5, 5, or the base end of the part 3 is attached to the lead attachment plate 17.

A permanent magnet 6 such as a Ba or Fe magnet is attached to one side wall of the contact space 4, and after cleaning the inside of the coil frame 2, the pieces on both sides are fitted into the fitting recess skin 9. A non-magnetic metal shielding fitting 7 is fitted, and a gap is formed between the permanent magnet 6 and the shielding fitting 7.

A yoke 11 is fitted to the end of the coil frame 2 on the lead mounting plate 17 side, and a sealing material 12 is applied to the outer periphery of the coil frame 2, coil 1, shielding fitting 7, and yoke 11. A cover 13 is attached on top of 12.

Therefore, the organic gas generated when the lead 3 exchanges contacts between the fixed contact plates 5, 5 is attracted by the magnetic force of the permanent magnet 6.
It can prevent the occurrence of brown howder.

In the conventional reed relay, as shown in FIG. 3a, a through hole 15 is bored in the side wall 14 of the coil frame 2, a permanent magnet 6 is fixed to the side wall 14, and the peripheral surface of the permanent magnet 60 is covered with a sealing material 12.
or surround one end with an end wall 1 as shown in Figure 3.
When the coil frame halves 2a and 2b, which are closed by the coil frame 6, are integrated, a permanent magnet 6 is attached to the end wall 16.

However, in the former of such conventional examples, the absorption amount of the permanent magnet 6 becomes saturated due to absorption of organic gas since the surroundings are not covered, and in the latter, the coil frame half 2 a When assembling the 92b, the permanent magnet 6 had a disadvantage in that the workability was significantly reduced.

In the present invention, as described above, a permanent magnet is attached to the side wall of the contact space, and a shielding fitting is fitted to the end of the coil frame to close the contact space, so that the permanent magnet is not surrounded. It is possible to attach a permanent magnet as shown in the figure, and it is possible to improve the effect of absorbing the organic gas generated by replacing the lead contact and prevent the occurrence of Braun howder. Since the space is closed, permanent magnets can be easily installed and assembly efficiency can be improved.Besides, cleaning liquid can be flowed in one direction (conventionally in a U-turn) within the coil frame before installing the shielding fittings. The inside of the coil frame can be cleaned, increasing the internal cleaning effect.

Therefore, the present invention can stabilize and improve electrical characteristics.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a partially cutaway exploded perspective view of the same as the above, and FIGS. 3a and 3b are partially cutaway sectional views showing a conventional example. Coil, 2 is coil frame, 3
4 is a lead, 4 is a contact space, 5 is a fixed contact plate, 6 is a permanent magnet, and 7 is a shielding metal fitting.

Claims (1)

[Claims] 1. Insert a lead with its base end fixed into the coil frame around which the coil is wound, and attach a fixed contact plate facing the lead tip to the side wall of the contact space of the coil frame where the lead tip is located. A reed relay characterized in that a permanent magnet is attached to the side wall of the contact space and a shielding fitting is fitted to the end of the coil frame so as to close the contact space.