JPS5837646B2 - lead relay - Google Patents

Description

[Detailed description of the invention] This invention relates to a reed relay.

In conventional reed relays, since the coil space and the contact space are not isolated, organic gas generated from the coil forms an organic film or brown powder on the contact surface, leading to an increase in the contact resistance of the contact.

And as a way to prevent the generation of organic gas from the coil,
A method of vacuum drying the coil has been used, but this method has the drawback of requiring a large number of steps and resulting in high cost.

Therefore, an object of the present invention is to provide a reed relay that can prevent an increase in the contact resistance of the contacts due to the organic gas generated by the coil without increasing the cost.

FIG. 1 is an exploded perspective view of one embodiment of the reed relay of the present invention, and FIG. 2 is a partially enlarged perspective view thereof.

In these figures, reference numeral 1 denotes a coil block composed of a coil 3 wound around the body of a coil frame 2 and flanges 4 and 5 of the coil frame 2.

Reference numeral 6 denotes a contact spring having a movable contact 7 formed at one end and a support portion 8 formed at the other end.
The coil hole 9 is inserted into the coil hole 9 formed in the coil hole 9 .

Reference numeral 10 denotes a case into which a coil block 1 containing a contact spring 6 is inserted, and after the coil block 1 is inserted, the coil block 1 is fixed to the case 10 by ultrasonic welding.

This case 10 is formed with grooves 11 and 12 that fit into the flange parts 4 and 5 of the coil frame 2, and when the coil block 1 is inserted into the case 10, the flange parts 4 and 5 are fitted.
, 5 and groove 11. 12 are configured to fit together.

13 is a permanent magnet attached to the mounting chamber 14 of the case 10, and 15 and 16 are fixed contacts with which the movable contact 7 comes into contact.

The fixed contact 15 is fixed to the surface of the terminal plate 17 of the case 10, as shown in FIG.
8 (the terminal board 18 is hidden and cannot be seen in FIG. 1).

The contact spring 6 has its support portion 8 (FIG. 1) supported by the terminal plate 19 (FIG. 1), and the movable contact 7 (FIG. 1) positioned between the fixed contacts 15 and 16. The magnetic flux generated by the coil 3 makes contact with the fixed contact 15 or 16.

The terminal plates 17 to 19 are formed by simultaneously molding the case 10 and the terminal plate material 20.

Unnecessary portions of the terminal plate material 20 are removed in a later step.

Reference numeral 21 denotes an upper cover that is attached to the upper side of the case 10 and is ultrasonically welded, and 22 is a lower cover that is attached to the lower side of the case 10 and is also ultrasonically welded.

These covers 2L22 are formed with grooves 23 and 24 that fit with the flanges 4 and 5 of the coil frame 2 (the grooves 23 and 24 formed in the upper cover 21 are not visible).
, when the covers 21 and 22 are attached to the case 10, the flanges 4 and 5 of the coil frame 2 inserted into the case 10
It is configured to fit with.

That is, the flange portions 4 and 5 of the coil frame 2 and the case 10
and cover 21. 22 grooves 11, 12, 23.
24 are fitted together to isolate the coil 3 space from the contacts 7, 15, and 16 spaces within the case 10.

In this way, the reed relay of this embodiment has case 10.
and cover 21. grooves 11, 12, formed in 22;
The flanges 4 and 5 of the coil frame 2 are fitted to the coil frames 23 and 24 to isolate the coil 3 space and the contact points 7, 15, and 16 spaces, so even if organic gas is generated from the coil 3, the organic gas will not be released. It does not move to the contact points 7, 15, and 16 space.

Therefore, since no organic film or brown powder is formed on the surfaces of the contacts 7, 15, and 16, contact resistance is stabilized and contact reliability is improved.

As described above, the adhesive relay of the present invention can prevent an increase in the contact resistance of the contacts due to the organic gas generated by the coil without increasing the cost, and furthermore, the coil frame, the case, and the cover are integrated. This increases the strength against external forces that act after assembly, and reduces changes in characteristics.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an embodiment of the reed relay of the present invention, and FIG. 2 is a partially enlarged perspective view thereof. 2... Coil frame, 3... Coil, 4, 5... Flange portion, 6... Contact spring, 7... Movable contact, 8...
- Support part, 10... Case, 15, 16... Fixed contact, 21... Upper cover 22... Lower side cover.

Claims (1)

[Claims] 1. A case, a cover attached to the opening of the case, a contact block housed in the case, a coil that opens and closes the contact block by generated magnetic flux, and a state in which the coil is wound around the body. A lead that is housed in the case and includes a coil frame whose entire periphery of the flange part fits into a circumferential groove formed on the inner surface of the case and cover, thereby isolating a coil space and a contact space inside the case and cover. relay.