JPH0145059Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is an electromagnetic device comprising a rotating armature that turns on and off a movable contact disposed inside the armature in accordance with an electric signal input to an electromagnet part. Concerning improvements to relays.

[Prior art]

A conventional electromagnetic relay of this kind was constructed as schematically shown in FIG. To explain this simply, reference numeral 1 in the figure is an electromagnet section as the switch driving mechanism, and this electromagnet section 1 includes a coil 2 wound around the outer periphery of the coil bobbin 2a, and a coil 2 wound around the outer periphery of the coil bobbin 2a.
The coil bobbin 2a includes a yoke 3 attached along the axial direction of the outer side of the coil bobbin 2a to form an electromagnetic path, an iron core 4 fitted into the center hole of the coil bobbin 2a, and the like. Also, 5
is a rotating armature having a substantially U-shape that is swingably supported by being brought into contact with the front end side of the above-mentioned yoke 3, and these members constitute the above-mentioned electromagnet section 1. has been done. In the figure, 5a is a movable end that is attracted to the iron core 4 at one end of the armature 5, and 5b is a movable end that is attracted to the iron core 4 on the other end of the armature 5. This is an operating end that turns on and off a contact mechanism consisting of attached fixed terminals 8a, 8b and neutral terminal 9.

The electromagnet part 1 is supported and fixed inside by a pair of insulator frames 6 and 7 which are arranged to sandwich the electromagnet part 1 from both sides thereof. Here, the conductor parts forming the above-mentioned fixed terminals 8a, 8b, neutral terminal 9, etc. are attached to each insulator frame 6, 7 so as to maintain an insulated state from each other, and the neutral terminal 9 is connected to the above-mentioned neutral terminal 9. It is fixedly provided to a contact spring 10 which is swung by the armature 5.

Further, reference numeral 11 is disposed so as to be interposed between the above-mentioned insulator frames 6 and 7 at the end on the armature 5 side, and presses the corner of the armature 5 toward the yoke 3 side to achieve the desired shape. This support spring member 11 has protrusions 13 on the outside of both U-shaped arms.
By inserting the support spring member 11 between the insulator frames 6 and 7 from the outside,
Each of the protrusions 13 described above is configured to be assembled and fixed by engaging with a support spring engaging portion 14 formed on the inner wall of the insulator frames 6, 7.

Further, the electromagnetic relay body assembled as described above is finally housed and held in the casing 15, as shown in FIG. 2, and is further sealed by filling the opening 15a with a sealant 16. It is sealed and held within the casing 15.

By the way, in the conventional electromagnetic relay configured as described above, after each member is accommodated and arranged in the casing 15, the sealant 16 is filled into the opening 15a of the casing as shown in FIG. The support spring member 11 and the casing 15
There is a risk that the sealant 16 may enter the gap created between the When contracted due to a temperature difference, etc., the pressing effect of the pressing piece 12 on the armature 5 is reduced by half, which is a problem.

[Summary of the idea]

The present invention was developed in view of the above circumstances, and has a pressing piece that presses a rotary armature that is swingably supported by a yoke of an electromagnetic part toward the yoke, and an insulator frame. The support spring member is inserted from the outside and is engaged and fixed, and its pressing piece is formed by bending the base part toward the inside of the device that presses the armature, and the tip side thereof is bent in the direction of the bending. By using an extremely simple and inexpensive structure that is bent in the opposite direction and formed to abut the armature, each of the above-mentioned components can be housed in a casing and the openings can be sealed with a sealant. This eliminates the problem of the sealant flowing into the back of the pressing piece that presses and holds the armature when the armature is fixed, thereby ensuring the required function of the pressing piece. The present invention provides an electromagnetic relay that can exert a pressing effect on the armature due to this.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

Figures 3 and 4 show an embodiment of the electromagnetic relay according to the present invention, and in these figures, parts that are the same as or correspond to those in Figures 1 and 2 are given the same numbers. The explanation will be omitted.

Now, according to the present invention, the pressing piece 12 of the support spring member 11 that applies a pressing force so as to swingably support the armature 5 constituting the electromagnet part 1 on one end of the yoke 3 is moved by the support spring. An inward direction in which the armature 5 is pressed at the base portion 12a extending from the member 11 (in this embodiment, the horizontal direction toward the electromagnet portion 1 side)
The tip 12b side thereof is bent in a direction opposite to this bending direction (also diagonally upward in this embodiment) and is configured to abut against a corner of the armature 5. It has characteristics in that way.

That is, when the pressing piece 12 is formed as described above, an inwardly stepped portion is formed at the base portion 12a, and this stepped portion is connected to the inner wall portion of the casing 15 disposed on the outside thereof. It is possible to have a large interval between the two. and,
According to such a configuration, the sealant 16 used to seal the opening 15a of the casing 15 during assembly of the electromagnetic relay fills the gap between the casing 15 and the support spring member 11 by capillary action. When the sealant 16 flows into the inside of the press piece 12, it can be easily and appropriately prevented from entering the sealant 16 to the rear side of the press piece 12. The problems that were said to have had a negative impact on the pressure effect on the government will be eradicated.

Note that the present invention is not limited to the structure of the embodiments described above, and the shape and structure of each part of this type of electromagnetic relay may be modified and changed as appropriate. It will be easily understood that the bending angle from the spring member 11 and the bending angle of the tip thereof may be appropriately selected as necessary.

[Effect of idea]

As explained above, according to the electromagnetic relay according to the present invention, the electromagnetic relay is provided on the support spring member that is inserted from the outside of the insulator frame and engaged and fixed, and is swingably supported by the yoke that constitutes the electromagnet part. A pressing piece that presses the rotary armature against the yoke is formed by bending its root part from the support spring member toward the inside of the device that presses the armature, and its tip side is bent in the opposite direction to this bending direction. Since the structure is bent in the direction and abuts against the armature, the structure is simple and inexpensive. This eliminates the problem of conventional sealants flowing into the back of the pressing piece that presses and holds the armature when sealing and fixing it, causing it to stick and hinder its operation. This has various excellent practical effects, such as ensuring the required movement of the pressing piece and making it possible to exert the required pressing effect on the armature.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the general structure of a conventional electromagnetic relay, Fig. 2 is a sectional view of its main parts, and Fig. 3 shows an embodiment of the electromagnetic relay according to the present invention, with only the main parts enlarged. FIG. 4 is a schematic exploded perspective view, and FIG. 4 is a sectional view of the main part thereof. 1...Electromagnet section, 2...Coil, 3...Yoke,
4... Iron core, 5... Rotating armature, 6, 7... Insulator frame, 11... Support spring member, 12... Pressing piece,
12a... Root part, 12b... Pressing side tip, 13
... Projection piece, 14 ... Support spring engaging portion, 15 ... Casing, 15a ... Opening, 16 ... Sealing agent.

Claims (1)

[Scope of utility model registration request] An electromagnet part having a rotary armature tilted and swingably supported on one end of the yoke, and this electromagnet part supported and fixed inside the yoke and insulated from each other to form a fixed terminal, a neutral terminal, etc. In an electromagnetic relay comprising an insulator frame having a conductor and a contact spring fixed to a neutral terminal thereof, and a casing for accommodating and sealingly holding the insulator frame, a pressing piece for pressing the armature toward the yoke side. and a support spring member that is inserted from the outside of the insulator frame and is engaged and fixed to a support spring engagement portion formed on an inner wall of the insulator frame, and the pressing piece of the support spring member is provided with:
The base portion thereof is bent inward to press the armature, and the tip thereof is bent in a direction opposite to this bending direction so as to come into contact with the armature. electromagnetic relay.