JPH0419707Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an electromagnetic relay, specifically an ultra-thin electromagnetic relay.

[Conventional technology and its problems]

Various ultra-thin electromagnetic relays have been proposed in the past, but none of them have been fully satisfactory as small electromagnetic relays.

Therefore, the present invention aims to provide an ultra-thin and compact electromagnetic relay.

[Means for solving problems]

The electromagnetic relay according to the present invention has a U-shaped magnetic circuit, a permanent magnet 4, a permanent magnet yoke 5, an armature 6, a movable spring 16, and contacts 24, 24, and has an overall flat shape. It is said that

The magnetic circuit is arranged on a predetermined plane and is composed of an iron core 1 around which a winding 2 is wound, and a pair of yokes 3, 3 on both sides of the iron core 1.

The permanent magnet 4 and the permanent magnet yoke 5 are located substantially on the above-mentioned predetermined plane, and extend in a direction substantially parallel to the extending direction of the iron core 1 so as to be surrounded by the above-mentioned magnetic circuit. The layers are stacked in a direction perpendicular to a predetermined plane.

The armature 6 is connected to a pair of yokes 3, 3 on both sides of the iron core 1.
The permanent magnet 4 is located on a plane substantially parallel to the above-mentioned predetermined plane and extends in a direction substantially parallel to the extending direction of the iron core 1 so as to face each free end of the iron core 1 and the permanent magnet 4.
It rotates in a plane approximately perpendicular to the above-mentioned predetermined plane about a fulcrum located approximately at the center of the axis.

The movable spring 16 is located on a plane substantially parallel to the above-mentioned predetermined plane so as to face the armature 6, and extends in a direction substantially parallel to the direction in which the iron core 1 extends. It has contacts 19, 19, and an armature 6.
is driven by the rotational movement of.

The contacts 24, 24 are provided on a fixed part located on a plane substantially parallel to the above-mentioned predetermined plane, so as to face the contacts 19, 19 at both ends of the movable spring 16, respectively.

Then, as the armature 6 rotates in a rotational direction corresponding to the current direction to the winding 2,
The movable spring 16 is driven, and the movable spring 1
One of the contacts 19, 19 at both ends of the fixing member 6, which corresponds to the above-mentioned current direction, is made to contact the corresponding contact 24 of the fixed part.

[Effect]

According to the present invention described above, when the winding 2 is energized, the armature 6 rotates in a rotational direction corresponding to the direction of energization. When the armature 6 rotates, the movable spring 16 is thereby driven, and one of the contacts 19, 19 at both ends of the movable spring 16 in accordance with the above-mentioned energizing direction contacts the corresponding contact on the fixed part. Contact 24.

〔Example〕

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention. In the figure, A shows an electromagnet assembly, B shows a movable spring assembly, and C shows a base assembly. In Fig. 1A, 1 is the iron core, 2 is the winding, and 3 and 3 are yokes formed by extending the iron core 1.The iron core 1 and the yokes 3 and 3 forming a magnetic circuit are U-shaped. ing. 4 is a permanent magnet, 5 is a permanent magnet yoke, and 5 is a permanent magnet yoke.
is saturated by the magnetic flux of the permanent magnet 4 magnetized in the vertical direction in the figure, and the dimensions are such that the magnetic flux from the winding 2 does not flow. Reference numeral 6 denotes an armature bent into an F-shape, which rotates (seesaws) around a hinge portion (rotation shaft) 7. 8, 8 are winding collars, and 9, 9 are terminal blocks, which are integrally formed by outsert molding on the iron core 1. 10 and 11 are a pair of winding terminals (2 in the figure)
12 and 13 are winding output terminals corresponding to the winding terminals 10 and 11, 14 is an armature rotating shaft guide provided on the permanent magnet yoke 5, and 15 is a permanent magnet positioning projection.

In FIG. 1B, 16 is a movable spring (2 in the figure).
17 is a mold for connection and fulcrum, 18 is an insulated card for driving a movable spring, 19 is a movable contact for output (opening/closing), 20 is a contact for leading out an external terminal, 2
1 shows a movable spring assembly positioning protrusion.

In FIG. 1C, 22 is a base, 23 is an output fixed spring (four in the figure) inserted into the base,
24 is a fixed contact for output (4 pieces in the figure), 25 is a fixed spring for leading out the external terminal (2 pieces in the figure), 26 is the same fixed contact (2 pieces in the figure), 27 is a hole for positioning the movable spring assembly, 28 , 29 are terminals, 30 and 31 are holes for winding output terminals 12 and 13, and 32 and 33 are base 2
The partition wall provided in 2 is shown.

To assemble these electromagnet assembly A, movable spring assembly B, and base assembly C, insert the movable spring assembly positioning protrusion 21 into the movable spring assembly positioning hole 27 of the base 22, and then connect the winding output terminal 12. ,13
can be inserted into the winding output terminal holes 30 and 31.
The electromagnetic relay according to the present invention is completed by stacking the assemblies A, B, and C in this way and covering them with a cover (not shown) to seal the terminal portions. In this case, since there is no place to fix the movable spring in the assembly, a movable spring with low stiffness, light load, and suitable for small relays can be obtained.

2 is a partial sectional view showing the operation of the spring drive mechanism of FIG. 1. FIG. As shown in this figure, in the assembled state, the armature 6 constantly applies pressure in the direction of the arrow to the movable spring 16 via the insulating card 18, and the contacts 20 and 26 are maintained in a conductive state. Depending on the direction of the current flowing through the winding 2, the armature 6 is attracted to one of the left and right yokes 3, which serve as magnetic poles, and rotates, and one of the movable contacts 19 is connected to the fixed contact 24 facing it. Contact. Figure 2 shows the armature 6
shows an intermediate state of rotation. In the example shown in FIG. 1, there are two movable springs 16 and four operating contacts, so during operation, two operating contacts are closed and the other two operating contacts are open.

FIG. 3 is a perspective view showing another example of the movable spring assembly B of FIG. 1. In this example, two movable springs 16 are connected by a driving insulating card 18. FIG. 4 is a sectional view showing how to pull out the terminals 28 and 29 shown in FIG. 1. In this example, terminal 28,
29 is drawn out through the partition wall 32, the contacts 24 and 26 are less affected by the penetration of flux during soldering or the penetration of sealing material during sealing. However, the way the terminals are brought out is not limited to this example, and may be done by cutting, bending, or the like.

FIG. 5 is a perspective view showing a second embodiment of the present invention. In the example shown in FIG. 1, the movable spring assembly B and the electromagnet assembly A are assembled on top of the base assembly C in order, but in this example, the assembly is performed with the cover 34 as a reference. Therefore, in this example, the collar 8' and the terminal block 9' are integrally constructed so that their upper surfaces (lower surfaces in the figure) are on the same plane. Other parts are similar to the example shown in FIG. A guide wall 36 is provided in the cover 34, which corresponds to the space between the winding 2 and the permanent magnet yoke 5. In the assembly of this example, the electromagnet assembly is turned upside down based on the guide wall 36 and fitted into the cover 34, and a movable spring assembly and a base assembly (not shown) are placed upside down on top of the electromagnet assembly. The terminals are then sealed to create an electromagnetic relay. When in use, attach it to a printed circuit board, etc. with the terminals facing down. 35 is a protrusion that is brought into contact with the printed circuit board at that time.

[Effect of idea]

According to the present invention described above, it has a U-shaped magnetic circuit, a permanent magnet 4, a permanent magnet yoke 5, an armature 6, a movable spring 16, and contacts 24, 24, and is flat as a whole. The magnetic circuit is arranged on a predetermined plane, and is composed of an iron core 1 around which a winding 2 is wound, and a pair of yokes 3, 3 on both sides of the iron core 1, and a permanent magnet 4 and a permanent magnet yoke. The iron is located approximately on the above-mentioned predetermined plane, extends in a direction substantially parallel to the extending direction of the iron core 1 so as to be surrounded by the above-mentioned magnetic circuit, and is laminated in a direction perpendicular to the above-mentioned predetermined plane. , the armature 6 is located on a plane substantially parallel to the above-mentioned predetermined plane so as to face the free ends of the pair of yokes 3, 3 on both sides of the iron core 1 and the permanent magnet 4, and is located on a plane substantially parallel to the above-mentioned predetermined plane. The movable spring 16 rotates in a plane substantially perpendicular to the above-mentioned predetermined plane about a fulcrum located substantially in the center of the permanent magnet 4, and the movable spring 16 faces the armature 6. As shown in FIG. The contacts 24, 24 are provided on a fixed part located on a plane substantially parallel to the above-mentioned predetermined plane, so as to face the contacts 19, 19 at both ends of the movable spring 16, respectively. , the movable spring 16 is driven by the rotary movement of the armature 6 in a rotational direction corresponding to the direction of current supply to the winding 2, and the movable spring 16
Since one of the contacts 19, 19 at both ends of the contact point 19, which corresponds to the above-mentioned current direction, contacts the corresponding contact point 24 of the fixed part, a U-shaped magnetic circuit, the permanent magnet 4, and the permanent magnet Since the yoke 5, the armature 6, the movable spring 16, and the contacts 24, 24 are all flat and thin structures, it is possible to obtain an ultra-thin and compact electromagnetic relay.

[Brief explanation of the drawing]

1 is an exploded perspective view showing a first embodiment of the present invention; FIG. 1A is an electromagnet assembly; FIG. B is a movable spring assembly; FIG. C is a perspective view showing a base assembly; The figure is an explanatory diagram of the operation of the spring drive mechanism in Figure 1, Figure 3 is a perspective view showing another example of the movable spring, Figure 4 is a sectional view showing how to bring out the terminal in Figure 1, and Figure 5 is FIG. 3 is a perspective view showing a second embodiment of the present invention. 1...Iron core, 3...Yoke, 4...Permanent magnet, 5
... Yoke for permanent magnet, 6 ... Armature, 7 ... Its rotating shaft.

Claims (1)

[Claims for Utility Model Registration] A U-shaped magnetic circuit consisting of an iron core around which a winding is wound, arranged on a predetermined plane, and a pair of yokes on both sides of the iron core, and a U-shaped magnetic circuit located substantially on the above predetermined plane. and a permanent magnet and a permanent magnet yoke each extending in a direction substantially parallel to the extending direction of the iron core and stacked in a direction perpendicular to the predetermined plane so as to be surrounded by the magnetic circuit; is located on a plane substantially parallel to the predetermined plane so as to face each free end of the pair of yokes on both sides of the yoke and the permanent magnet, and extends in a direction substantially parallel to the direction in which the iron core extends; an armature rotating in a plane substantially perpendicular to the predetermined plane about a fulcrum located approximately in the center of the permanent magnet; , a movable spring extending in a direction substantially parallel to the extending direction of the iron core, provided with contacts at both ends in the extending direction, and driven by the rotational movement of the armature; contact points provided on a fixed part located on a plane substantially parallel to the predetermined plane so as to face each contact point, and having a flat shape as a whole; The movable spring is driven by rotational movement in a rotational direction corresponding to the energization direction, and one of the contacts at both ends of the movable spring corresponding to the energization direction comes into contact with the corresponding contact of the fixed part. An electromagnetic relay consisting of