JPS5844511Y2 - Denjike Denki - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electromagnetic relay, and its purpose is to provide an electromagnetic relay that is easy to manufacture.

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

Reference numeral 2 denotes an electromagnetic coil block, which is composed of a molded coil frame 10 around which a coil 9 is wound, an iron core 11, and a terminal portion 12. 1 is installed protrudingly.

As shown in FIG. 4, the guides 1, 1 have a tapered outer peripheral portion and constitute a press-fit retaining portion 3.

Reference numeral 4 designates a first contact spring block, which is formed by integrally molding contact springs 4 a and 4 b embedded in the sides thereof, and has a guide recess and a through hole a for insertion. Perforations are made on both sides of the frame.

5 is a second contact spring block, which is the first spring block 4
Similarly, it is formed by integrally molding the contact springs 4a, 4b of the first contact spring block and the common contact spring 5a for replacing the contacts, and the through holes for the insertion of the guides 1, 1 are perforated on both sides of the ends. I am forced to do so.

Reference numeral 6 denotes a balance spring, which has a U-shape, and has through holes C for inserting the guides 1 and 1 bored on both sides of its central piece.

Through holes a, l) were drilled in each member in this way. C is c
, l), and a, the inner diameter can be set gradually from a large diameter to a small diameter.

7 is an amateur, 8 is a card, 13 is a housing, and 14 is a lid of the housing 13.

Then, as shown in FIG.
Attach as shown in the diagram.

Next, the second contact spring block 5 is attached to the upper part of the balance spring 6 by pressing it against the guide 1 using a through hole in the same manner as the balance spring 6.

Further, the first contact spring block 4 is attached to the upper part of the second contact spring block 5 by being press-fitted into the guide 1 using the through hole a in the same manner as the second contact spring block 5 and the balance spring 6.

Further, by attaching the armature 7 to the lower part of the electromagnetic coil block 2 and fitting the card 8 to the iron core 11, the assembly of the mechanism part is completed as shown in FIG. 3.

This mechanism is placed inside the housing 13 and the lid 14 is attached to complete the process.

FIG. 5 shows a cross-sectional view showing the relationship between the armature 7 and the card 8. The armature 7 is coupled to the electromagnetic coil block 2 by fitting the coil frame 10 of the electromagnetic coil block 2 into an opening bored in the center. It is rotatably supported between the electromagnetic block 2 and the bottom of the housing 13 by a spring body 15 provided at the lower part of one end.

Furthermore, for the approximately π-shaped card 8, the amateur 7 places the other end of the card 8 opposite the tips of both legs of the card 8 (lower end in FIG. 1), and moves the card 8 up and down by rotation. It has become.

The spring 6 has one tip on both sides engaged with both legs of the card 8.

In the present invention, as described above, the electromagnetic coil block is provided with a guide that protrudes upward, and this guide is provided with a press-fit retaining part that is formed with a taper that becomes smaller in diameter toward the upper end. Simply drill a through hole in the member for guide insertion, and use this hole to press the guide into each member.
, the second contact spring and the balance spring can be positioned, and the members can be held and fixed by the holding part, so it has the advantage that it does not easily dislodge due to external force and the assembly work is extremely easy. Moreover, since the taper structure constitutes a press-fit engagement part, the order of assembly can be determined by successively decreasing the diameter of the through hole for the guide insertion of the members to be assembled in sequence, and assembly is ensured in the order of assembly. This has the advantage that it can be carried out in many ways.

The first contact spring, the second contact spring, and the balance spring are sequentially stacked and pressed on the guide of the electromagnetic coil block, and then assembled, and then heat caulked, for example, so that the electromagnetic block, the first and second contact springs, and the balance spring are assembled together. This has the advantage that the balance spring can be fixed even more firmly.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of an embodiment of the present invention, Figures 2 and 3 are
The figure is an explanatory diagram of the same as above, FIG. 4 is an explanatory diagram of assembling of the same as the above, and FIG.
2 is an electromagnetic coil block, 3 is a press-fit engagement part, 4 is a first contact spring block, 5 is a second contact spring block, 6 is a balance spring, a, l), c is a through hole, 7 is an armature, 8 is a It's a card.

Claims (1)

[Scope of utility model registration request] An electromagnetic coil block is provided on the upper surface of one end side thereof with a guide whose outer peripheral surface is tapered so as to protrude upward and become narrower toward the upper end, and the taper constitutes a press-fit retaining part, A U-shaped flat spring on both sides of one end of the contact spring block, both sides of one end of the second contact spring block, a U-shaped flat spring on both sides of the center piece of the U-shaped flat spring, a second contact spring block,
The through-holes for the guide insertion are bored in order from the large diameter to the small diameter in the order of the first contact spring block, and the through-holes are used to insert the flat spring, the second contact spring block, and the first contact. The spring blocks are press-fitted and stacked on top of the electromagnetic coil block, and a part of the electromagnetic coil block is fitted into the opening to form an armature with an opening in the center to form a housing for storing the electromagnetic coil block and mechanism. The lower ends of both legs of a substantially π-shaped card, which is rotatably supported between the bottom of the body and attached to the other end of the electromagnetic coil block so as to be able to move up and down, are placed opposite to the upper surface of the amateur. An electromagnetic relay is provided in which both ends of the flat spring are engaged with the card.