JPH048602Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a drive transmission mechanism for an electromagnetic relay that transmits displacement of an armature in the electromagnetic relay to a movable contact.

[Prior Art] FIG. 8 is a schematic diagram of an electromagnetic relay, in which a yoke 2 and a magnetic pole piece 3 are inserted into a coil 1. A movable contact 5 is provided on the magnetic pole piece 3 via a hinge spring 4, and a drive card 6 is provided at the other end of the movable contact 5. On the other hand, a break contact 8, a make contact 7, and a movable contact 9 are provided, and the drive card 6 is arranged at a position where it comes into contact with the movable contact 9. With such a configuration, when the coil is energized and the armature 5 is displaced by its electromagnetic force, the drive card 6 moves in the direction of arrow A in response to this displacement and pushes the movable contact 9. do. The movable contact 6 is thus switched from the break contact 8 to the make contact 7. When the biasing of the coil 1 is released, the drive card 6 and the armature 5 are returned to their original positions by a hinge spring (not shown).

Incidentally, the drive card 6 supports the armature 5 with a structure as shown in FIG. That is, a support center body 11 having a protrusion 10 formed at its tip
are formed, and arms 12 and 13 supporting the armature 5 on both sides are formed. On the other hand, the armature 5 has a support hole 14 into which the protrusion 10 is inserted.
is formed.

[Problems to be solved by the invention] Therefore, although the arms 12 and 13 at both ends support the armature 5, they cannot function reliably, and the armature 5 easily rotates around the protrusion 10 and comes off. Reliable displacement of the armature 5 cannot be transmitted. Further, a support hole 14 must be formed in the armature 5, and it is advantageous to machine the support hole 14 as close to the tip as possible for downsizing the entire relay. but,
It is extremely difficult to process and form the support hole 14 in such a position.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drive transmission mechanism for an electromagnetic relay that can firmly support an armature and reliably transmit displacement of the armature.

[Means for Solving the Problems] The present invention utilizes a make contact and a break contact to control the rotational displacement of an armature about one end of the armature by electromagnetic force generated by the energization of a coil disposed opposite to the yoke. In the drive transmission mechanism of an electromagnetic relay that transmits power to a movable contact that performs a switching connection to the A drive transmission mechanism for an electromagnetic relay that attempts to achieve the above object, comprises a support projection that supports the support projection, and a drive card that pushes the movable contact by rotation of the armature, and a drive card that pushes the movable contact by rotation of the armature. be.

[Function] By providing such a means, each support projection formed on the drive card is fitted into each support groove formed on both sides of the armature, and each support projection formed at a position opposite to the support projection is fitted into each support groove formed on both sides of the armature. The armature is supported by a support arm.

[Example] Hereinafter, a first example of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram of a drive transmission mechanism of an electromagnetic relay. Note that the contact block including a break contact, a make contact, and a movable contact is omitted. The armature 20 has support grooves 21 and 22 formed on both sides of the tip thereof, respectively. on the other hand,
23 is a driving card, and this driving card 23
Support protrusions 24 and 25 that fit into the support grooves 21 and 22 are located at positions corresponding to the support grooves 21 and 22, respectively.
Further, support arms 26 and 27 are formed at opposing positions of these support protrusions 24 and 25, respectively. Furthermore, between each of the support protrusions 24 and 25, a movement relief groove 30 for a piece 29 of the yoke 28 is formed, and a locking hole for locking a locking body 32 of a return spring 31 fixed to the bottom surface of the yoke 28 is formed. 33 is formed. Note that 34 is a coil bobbin, and the armature 20 is inserted into the through hole 35 of the coil bobbin 34, and the yoke 28 is arranged with the coil 37 fitted into the recess 36.

With such a configuration, the armature 20 is inserted into the through hole 35, and the yoke 28 is disposed with the coil 37 fitted into the recess 36.
After this, as shown in FIG. 2 and FIG. , 25 support the armature 20. Then, one piece 29 of the yoke 28 is placed in the movement escape groove 30, and the locking body 32 of the return spring 31 is locked in the locking hole 33. In this way, the electromagnetic relay is assembled as shown in FIG.

Therefore, when the coil 37 is energized, the armature 20 is displaced in the direction of the arrow B by its electromagnetic force, and the drive card 23 is moved in the same direction. At this time, since the yoke 28 does not move, one piece 29 of the yoke 28 moves within the movement clearance groove 30. Moreover, when the bias to the coil 37 is released, the return spring 31
etc., the drive card 32 and armature 20 return to their original positions.

In this way, in the first embodiment, the support protrusions 24 and 25 formed on the drive card 23 are connected to the support grooves 21 and 25 formed on both sides of the armature 2.
Since the armature 20 is supported by the support arms 26 and 27 which are fitted into the support protrusions 24 and 25 and are formed at opposite positions to the support protrusions 24 and 25,
The armature 20 is firmly supported and will not wobble or be twisted by rotation or the like.
Therefore, the armature 20 will not wear out. Further, since the movement relief groove 30 of the yoke 28 can be formed, the opposing area between the armature 20 and the yoke 29 can be increased by approximately the area indicated by the diagonal line A, as shown in FIG. As a result, the electromagnetic force generated between the armature 20 and the yoke 28 is increased, and the driving force can be increased.

Next, a second embodiment will be described. The mechanism differs from the mechanism shown in FIG. 1 in that the drive card 40 does not have a locking hole for the hinge spring. In other words,
The hinge spring 41 is fixed to the armature 42 and returns the armature 42 to its original position when the coil is released. By the way, this armature 42
Support grooves 43 and 44 are formed therein. Now,
The drive card 40 has support protrusions 45 and 46 that fit into the support grooves 43 and 44 at positions corresponding to the support grooves 43 and 44, and support arms that are positioned opposite to the support grooves 45 and 46. 47, 48
are formed respectively. In addition, each support protrusion 4
A relief groove 51 for movement of a piece 50 of the yoke 49 is formed between 5 and 46. Thus, such a drive card 40 becomes as shown in FIG. 7 when an electromagnetic relay is assembled using the armature 42 and yoke 49.

In this way, in the second embodiment as well, each support protrusion 4 formed on the drive card 40 is similar to the first embodiment.
5 and 46 are fitted into support grooves 43 and 44 formed on both sides of the armature 42, respectively, and the armature 42 is supported by support arms 47 and 48 formed opposite to the support protrusions 45 and 46. Needless to say, since this configuration is adopted, the same effects as those of the first embodiment can be achieved.

[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide a drive transmission mechanism for an electromagnetic relay that can firmly support the armature and reliably transmit the displacement of the armature.

[Brief explanation of the drawing]

FIG. 1 is a perspective configuration diagram showing a first embodiment of a drive transmission mechanism of an electromagnetic relay according to the present invention, FIGS. 2 to 5 are diagrams for explaining the operation of the mechanism, and FIGS. FIG. 7 is a diagram for explaining a second embodiment of the present invention, and FIGS. 8 and 9 are configuration diagrams of a conventional drive transmission mechanism of an electromagnetic relay. 21, 22, 43, 44...Support groove, 23, 4
0... Drive card, 24, 25, 45, 46...
Support protrusion, 26, 27, 47, 48...support arm,
30, 51...Movement relief groove.

Claims (1)

[Claims for Utility Model Registration] (1) Switching the rotational displacement of an armature with one end as the center of rotation to a make contact and a break contact by electromagnetic force generated by the energization of a coil disposed opposite the yoke. In a drive transmission mechanism of an electromagnetic relay that transmits power to a movable contact for connection, support grooves are formed on both sides of the other end of the armature, and supports that fit into the support grooves at positions corresponding to the support grooves. 1. A drive transmission mechanism for an electromagnetic relay, comprising a protrusion and a drive card in which a support arm is formed at a position opposite to the support protrusion, and which pushes the movable contact by rotation of the armature. (2) The drive card has a yoke movement escape groove formed between both support protrusions, which is the scope of the utility model registration claim No.
A drive transmission mechanism of the electromagnetic relay described in (1).