JPS63307633A - Solenoid relay - Google Patents

Abstract

PURPOSE:To prevent an electric magnet from rattling and construct device in small size by detaining the magnet with pawls formed by caulking the top of at least one of the terminals, and fixing the magnet to the base. CONSTITUTION:An electric magnet 5 is arranged on the top surface of a base 1, and a plurality of terminals 3, 4 are inserted and fixed to the base 1. This electric magnet 5 is detained with pawls 31, 41 formed by caulking the top of at least one of the terminals 3, 4 and fixed to the base 1. Thereby no rattling will occur in the magnet. It is not necessary to equip the case with any locational boss etc., for fixing magnet at the base top, and the outside dimensions of the casing will not become so large to lead to constructing of the device in small size.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electromagnetic relay, and more particularly to the structure of mounting an electromagnet in a vehicle-mounted electromagnetic relay.

Conventional technology and its problems Conventionally, electromagnetic relays have been constructed by, for example, housing an electromagnet in a substantially box-shaped base, fitting and fixing a case from above the base, and protruding from the bottom surface of the case. There is one in which the electromagnet part is held between the base and the case via a positioning protrusion.

However, in this case, due to variations in the dimensional accuracy of the base, the case, and the electromagnet, the electromagnet was likely to shake due to vibrations of the passenger car in which it was mounted, for example.

Moreover, in the conventional electromagnetic relay, a positioning protrusion or the like must be provided protrudingly from the bottom surface of the case, which causes the problem that the external dimensions of the casing become large and the device becomes large in size.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an electromagnetic relay in which an electromagnet is disposed on the upper surface of a base, and a plurality of terminals are inserted into and fixed to the base. The electromagnet part is fixed to the base by locking the electromagnet part with a claw part formed by caulking the upper end part of at least one of the terminals.

Operation and Effect Therefore, according to the present invention, the electromagnet portion is fixed to the upper surface of the base via the claw portion of the terminal inserted through and fixed to the base.

Therefore, even if there are variations in the dimensional accuracy of the base, the case, etc., the claws of the terminals fixed to the base lock the electromagnet, so that the electromagnet does not wobble.

Furthermore, since there is no need to provide a positioning protrusion or the like on the case or the like for fixing the electromagnet to the upper surface of the base, the external dimensions of the casing are not increased and the device can be miniaturized.

X Odor: An embodiment of the present invention will now be described with reference to the accompanying drawings of FIGS. 1 to 3.

The electromagnetic relay according to this embodiment is roughly composed of a base l, a contact mechanism section 2, a coil terminal 3.4, an electromagnet section 5, and a movable iron piece 6.

The base 1 has a planar substantially rectangular plate shape, and is provided with a through hole 11 approximately in the center thereof, and has a planar cross-shaped shape near one edge facing the through hole 11 in between. A through hole 12 is provided, and a through hole 13 is provided near the other edge.

Plus, the base! Through holes 14.15 and 16.17, into which the coil terminals 3 and 4 are press-fitted and fixed, are provided at opposite edges along the longitudinal direction.

The contact mechanism section 2 includes a normally closed fixed contact terminal 21, a normally open fixed contact terminal 22, and a movable contact piece 23.

The normally closed fixed contact terminal 21 and the normally open fixed contact terminal 22 are
It is press-fitted and fixed into the through holes 12 and 11 provided in the base l, respectively, and the normally closed fixed contact 21a and the normally open fixed contact 22a face each other at a predetermined interval. Further, the normally closed fixed contact terminal 21 is provided with a position regulating portion 21b located substantially on the same plane as the tip end surface of the fixed contact 21a by bending the upper end thereof in the protruding direction of the fixed contact 21a.

The movable contact piece 23 is caulked and fixed to a yoke 54, which will be described later, and is provided with a movable contact 23a at its free end, and this movable contact 23a is arranged so as to be able to approach and separate from the normally closed fixed contact 21a and the normally open fixed contact 22a. (Figure 2).

The coil terminal 3 has a claw portion 31 extending upward and a relay arm portion 32 extending laterally, and protrudes downward from a terminal portion 33 extending downward and the relay arm portion 32. The caulking portions 34 are press-fitted into the through holes 14 and 15 provided in the base l, and then the caulking portions 34 are caulked to be fixed to the base l.

On the other hand, the coil terminal 4 has a shape symmetrical to the coil terminal 3, and its terminal portion 43 and caulking portion 44 are connected to the through hole 16 provided in the base 1 and! 7 and then fixed to the base 1 by caulking the caulking portions 44.

In addition, 35.45 is the relay arm portion 32 of the coil terminal 3.4.
．． It is a connecting portion that projects upward from 42.

Electromagnet part 5 is coil 5! The iron core 53 having a substantially T-shaped cross section is inserted into the body of the spool 52 wound with the above-mentioned It is integrated by caulking the rear end portion 53b.

The spool 52 has flanges 55 and 56 at both ends, a frame 57 is integrally formed on the outer surface of one of the flanges 55, and a pair of relays protrudes downward at the lower end of the other flanges 56. The terminals 58.58 are insert molded. moreover,
A pair of guides 1157 are provided on both outer surfaces of the frame portion 57.
a, 57b are provided, while the relay terminals 58, 58
In this case, the lead wires of the coil 51 are tied together and soldered.

The yoke 54 has a common terminal 54b fixed to its vertical part by caulking so as to protrude downward, and one end part of the movable contact piece 23, which is bent in a cross-sectional shape, is fixed by caulking to its horizontal part. It is. The movable contact piece 23 is provided with a movable contact 23a at its free end, and has a movable iron piece 6 fixed to its intermediate part by caulking. Therefore, the movable iron piece 6 rotates about the horizontal tip of the yoke 54 as a fulcrum, and can move toward and away from the magnetic pole portion 53a of the iron core 53.

Therefore, the electromagnet part 5 having the above structure is positioned above the base l, and the guide groove 57 provided in the frame part 57
When a and 57b are fitted into the claws 31 and 41 of the coil terminal 3.4 and assembled, the movable contact 23a of the movable contact piece 23 is brought into contact between the normally closed fixed contact 21a and the normally open fixed contact 22a. The relay terminal 58.5
8 is located near the tip of the relay arm 32.42.

Further, the position regulating portion 21b located at the upper end of the normally closed fixed contact terminal 21 can come into contact with the lower end of the movable iron piece 6. Therefore, even if impact force is applied from the outside, the movable iron piece 6
Since the lower end portion of the movable iron piece 6 contacts the position regulating portion 21b, there is an advantage that the movable iron piece 6 does not swing too much and the movable contact piece 23 does not bend.

Then, while caulking the claws 31 and 41 inward, the relay terminals 58 and 58 are connected to the relay arm portion 3 of the coil terminal 3.4.
By soldering to 2 and 42, the base 1 and the electromagnet part 5 become integrated (Fig. 1), and then, by fitting a substantially box-shaped case (not shown) to the base l,
The assembly work is complete.”

In addition, if necessary, the connection part 35.4 of the coil terminal 3.4
5 may be connected to a resistor or the like.

In the electromagnetic relay configured as described above, when not energized, the movable contact 23a is urged outward by the spring force of the movable contact piece 23, and is closed to the normally closed fixed contact 21a.

Next, when the coil 51 is excited, the movable iron piece 6 moves to the iron core 53.
The movable iron piece 6 rotates against the spring force of the movable contact piece 23, and the movable contact 23a switches from the normally closed fixed contact 21a to the normally open fixed contact '22a.

Then, when the excitation is released, the spring force of the movable contact piece 23 causes the movable contact piece 23 to return to its original state.

In addition, in the above-mentioned embodiment, a case was explained in which the electromagnet part is fixed to the base by caulking the straight claws of two coil terminals, but this is not necessarily the case. Alternatively, one side of the electromagnet part may be engaged with a claw part protruding from the base, and
The electromagnet part may be fixed to the base by locking the other side with a claw part formed by caulking a part of the terminal.

Furthermore, after placing the electromagnet on the base, you can not only fix the electromagnet to the base by caulking the straight claws of the coil terminal, but also bend the claws of the terminal in advance and deform the claws elastically. Alternatively, the electromagnet part may be press-fitted into the base, and the electromagnet part may be fixed to the base by the spring force of the elastically restored claw part.

Further, the terminal is not limited to one that is press-fitted and fixed to the base, but it goes without saying that it may be insert-molded on the base.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention,
FIG. 1 is an overall perspective view, FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1, and FIG. 3 is an exploded perspective view. l...Base, 3.4...Coil terminal, 5...Electromagnet part, 31.41...Claw part. Figure 2

Claims (1)

[Claims] (1) In an electromagnetic relay in which an electromagnet is disposed on the upper surface of a base and a plurality of terminals are inserted through and fixed to the base, a claw formed by caulking the upper end of at least one terminal among the plurality of terminals. An electromagnetic relay characterized in that the electromagnet part is locked at the base and the electromagnet part is fixed to the base.