JP3591881B2 - Small relay - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a small relay used for switching wiring of an electronic device, for example.
[0002]
[Prior art]
The role of relays used in electronic exchanges and the like as main components has become increasingly important, and their forms have also shifted to ultra-miniaturization and low power consumption. The main applications are for line switching, telephones, and the like.
[0003]
FIG. 1 shows an example of a basic configuration of a relay. When an exciting current is supplied to the electromagnet 10, the contact 21 on the movable contact portion 20 side is attracted to the electromagnet 10 so that the movable contact spring is moved. When the contact 23 provided on the contact 22 comes into contact with the fixed contact 31 on the make side and the supply of the exciting current is cut off, the movable contact portion 20 is rotated by the urging force of the recovery spring 35 and the contact 23 of the movable contact spring 22 is rotated. Contact the fixed contact 32 on the break side.
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional relay, the movable contact portion 20 is moved by the electromagnetic action of the electromagnet 10 and the movable contact portion 20 is returned by the urging force of the restoration spring 35 at the time of restoration. This is an obstacle to achieving the goal.
[0005]
In addition, since the movable contact portion 20 is not only relatively heavy but also the return of the movable contact portion 20 is performed by the urging force of the recovery spring 35, the movement of the movable contact portion 20 becomes slow, and the speed of relay switching is increased. Is hindered above.
[0006]
Further, in the case of multi-channel, a plurality of relays must be used side by side, resulting in a problem that the device becomes large.
[0007]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a small-sized relay capable of realizing a small-sized and thin-shaped, multi-channel, and high-speed relay switching.
[0008]
In order to achieve the above object, the small relay of the present invention has a magnetic field generating means formed by burying a magnetic material having shape anisotropy, and first and second movable contacts sandwiching the magnetic field generating means. An electromagnet is held at a position opposed to the magnetic field generating means, and fixed at a position opposed to the first and second movable contacts. A fixed substrate on which a contact is formed and a contact signal input terminal for applying an exciting current to the electromagnet is formed on a surface opposite to the surface on which the fixed contact is formed, and the magnetic field generating means is attracted by the electromagnet; By doing so, the first movable contact and the second movable contact are electrically connected via the fixed contact. Further, in the above-mentioned small relay, the movable substrate is interposed between the pair of fixed substrates facing the fixed contact, and the magnetic field generating means and the contact output terminal are formed on both surfaces thereof. I do.
[0009]
[Action]
In the small relay of the present invention, the electromagnet of the fixed substrate is arranged to face the magnetic field generating means of the movable substrate, and the fixed contact of the fixed substrate is arranged to face the first and second movable contacts of the movable substrate. By suctioning the generating means, the first movable contact and the second movable contact are electrically connected via the fixed contact.
[0010]
Therefore, unlike the conventional relay configuration, the movable contact portion 20 is moved by the electromagnetic action of the electromagnet 10 and the structure for returning the movable contact portion 20 by the urging force of the restoration spring 35 at the time of restoration becomes unnecessary. Since the movable contact and the second movable contact are extremely lightweight, the movement of the first movable contact and the second movable contact is made agile.
[0011]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
2 to 4 show one embodiment of the small relay of the present invention.
[0012]
As shown in these figures, the small relay is provided with electromagnet substrates 60 and 70 as fixed substrates and a lever contact substrate 50 as a movable substrate interposed between the electromagnet substrates 60 and 70 via a spacer 80. For example, the electromagnet substrates 60 and 70 are made of ceramic, and the lever contact substrate 50 is made of polyimide, for example.
[0013]
The lever contact substrate 50 has a film shape with a thickness of about 0.1 mm. At a substantially central part of the lever contact substrate 50, a shape anisotropic magnet 51 as a magnetic field generating means made of a magnetic material having shape anisotropy is buried. Further, on the upper and lower surfaces of the lever contact substrate 50, Au-plated contact output terminals 52, 53, 54, 55 are formed in a pattern with the shape anisotropic magnet 51 interposed therebetween.
[0014]
As for a magnetic material having shape anisotropy, Japanese Unexamined Patent Publication No. Hei 5-315132 discloses that a functional material is embedded as artificial tissue of various patterns in a device functionalized by two-dimensional lithography. Thus, it is disclosed that a new shape anisotropic element can be obtained which can add a new function and achieve further miniaturization, three-dimensionalization, high efficiency, and the like.
[0015]
Further, the lever contact substrate 50 has a notch extending in the same direction as the contact output terminals 52, 53, 54, 55 with the shape anisotropic magnet 51 and the contact output terminals 52, 53, 54, 55 sandwiched therebetween. A groove 56 is formed, and by forming the notch groove 56, the shape anisotropic magnet 51 and the contact output terminals 52, 53, 54, and 55 can be individually and freely flexible without interfering with adjacent portions. .
[0016]
A communication hole 61 having a diameter of about 0.4 mm is formed at a position corresponding to the shape anisotropic magnet 51, which is a substantially central portion of the electromagnet substrate 60 located above. A core 62 constituting an electromagnet made of Fe 2 is inserted into the communication hole 61, and a gap between the communication holes 61 is closed by a sealing material 63.
[0017]
On the upper surface side of the electromagnet substrate 60, contact signal input terminals 64 and 65 are formed in a pattern corresponding to the contact output terminals 52 and 53 described above. A coil 68 wound around the core 62 is connected to an end of each of the contact signal input terminals 64 and 65.
[0018]
A conductive contact 69 as a Au-plated fixed contact is provided at a position surrounding the communication hole 61 on the lower surface side of the electromagnet substrate 60. The contact output terminals 52 and 53 are brought into conduction by the contact output terminals 52 and 53 being brought into contact with the conduction contact 69. The conduction will be described later.
[0019]
Similarly to the above-described electromagnet substrate 60, a communication hole 71 having a diameter of about 0.4 mm is formed in a position corresponding to the shape anisotropic magnet 51 in the lower electromagnet substrate 70. Is inserted with a ferrite core 72 made of Fe 2, and a gap between the communication holes 71 is closed by a sealing material 73.
[0020]
A conductive contact 79 is provided at a position surrounding the communication hole 71 on the upper surface side of the electromagnet substrate 70. When the contact output terminals 54 and 55 come into contact with the conductive contact 79, the contact output terminals 54 and 55 are brought into conduction. The conduction will be described later.
[0021]
On the lower surface side of the electromagnet substrate 70, contact signal input terminals 74 and 75 are formed in a pattern corresponding to the contact output terminals 54 and 55 described above. A coil 78 wound around the core 72 is connected to an end of each of the contact signal input terminals 74 and 75. Further, an inert gas 100 such as Ar 2 is sealed between the electromagnet substrates 60 and 70.
[0022]
Subsequently, a method of manufacturing a small relay having such a configuration will be described.
[0023]
First, contact signal input terminals 64, 65, 74, and 75 are formed in parallel on one surface of the electromagnet substrates 60 and 70 made of ceramics, and then the intermediate portions of the electromagnet substrates 60 and 70 are used. Communication holes 61 and 71 are formed on the extension of the terminals 64, 65, 74 and 75, and the cores 62 and 72 around which the coils 68 and 78 are wound are inserted into the communication holes 61 and 71, respectively. The gaps between the communication holes 61, 71 are closed by sealing materials 63, 73.
[0024]
Next, contact output terminals 52, 53, 54, and 55 are patterned in parallel on both sides of the lever contact substrate 50, and a notch groove 56 is formed between the contact output terminals 52, 53, 54, and 55. Thereby, flexibility is imparted to the portions where the contact output terminals 52, 53, 54, 55 are formed with the shape anisotropic magnet 51 as the center.
[0025]
After the notch groove 56 is formed, a number of holes are provided in the center of the lever contact substrate 50, and a hard magnet material such as Sm Cos is formed in these holes by vacuum evaporation or fine powder by resin molding. An isotropic magnet 51 is formed.
[0026]
After the shape anisotropic magnets 51 are formed, the upper side of each shape anisotropic magnet 51 is, for example, N, and the lower side thereof is S, and then the spacers 80 are provided on both ends of the electromagnet substrates 60, 70. , A lever contact substrate 50 is sandwiched between the electromagnet substrates 60 and 70, an inert gas 100 such as Ar is sealed between the electromagnet substrates 60 and 70, and sealed to form a two-contact multichannel small-sized relay. Is manufactured.
[0027]
When the exciting current is supplied to the small relay configured as described above, the following operation is performed.
[0028]
That is, in a state where the upper side of each shape anisotropic magnet 51 of the lever contact substrate 50 is attached to N, and the lower side thereof is attached to S, the lower side of the core 62 on the electromagnet substrate 60 is attached to S. The coil 68 is wound so as to be applied, and when an exciting current is supplied to the coil 68 via the contact signal input terminals 64 and 65 and the lower side of the core 62 is attached to the S, the coil 68 is attached. The shape anisotropic magnet 51 corresponding to the core 62 is attracted to the core 62 side.
[0029]
As a result, the contact output terminals 52 and 53 on the lever contact board 50 contact the conductive contacts 69 on the lower surface side of the electromagnet board 60, so that the contact output terminals 52 and 53 are conducted through the conductive contacts 69. .
[0030]
On the other hand, in the core 72 on the electromagnet substrate 70 side, the coil 78 is wound so that the upper side is attached to N, and the exciting current is applied to the coil 78 via the contact signal input terminals 74 and 75. When the upper side of the supplied core 72 is attached to N, the shape anisotropic magnet 51 corresponding to the attached core 72 is attracted to the core 72 side.
[0031]
Thereby, the contact output terminals 54 and 55 on the lever contact board 50 contact the conductive contacts 79 on the upper surface side of the electromagnet board 70, and the contact output terminals 54 and 55 are conducted through the conductive contacts 79. .
[0032]
Incidentally, when the time required for switching the contact output terminals 52, 53, 54, 55 on the lever contact board 50 of the small relay having such a configuration was actually measured, a value of 100 μs was obtained.
[0033]
As described above, in this embodiment, the cores 62, 72 on the electromagnet substrate 60 or 70 side are arranged to face the shape anisotropic magnet 51 of the lever contact substrate 50, and the contact output terminals 52 of the lever contact substrate 50 are further arranged. , 53, 54, 55 are opposed to each other, so that when the shape anisotropic magnet 51 is attracted by the cores 62, 72, the contact output terminals 52, 53, 54, 55 are conducted through the conducting contacts 69, 79. .
[0034]
Therefore, unlike the conventional relay configuration, the movable contact portion 20 is moved by the electromagnetic action of the electromagnet 10 and the structure for returning the movable contact portion 20 by the urging force of the restoration spring 35 at the time of restoration becomes unnecessary. Since the movable contact and the second movable contact are made extremely lightweight, the movement at the time of movement is made agile, so that the size and thickness can be reduced and the speed of switching the relay can be increased.
[0035]
【The invention's effect】
As described above, according to the small-sized relay of the present invention, the electromagnet of the fixed substrate is arranged to face the magnetic field generating means of the movable substrate, and the fixed contact of the fixed substrate is further opposed to the first and second movable contacts of the movable substrate. And the first movable contact and the second movable contact are conducted through the fixed contact by attracting the magnetic field generating means by the electromagnet.
[0036]
Therefore, unlike the conventional relay configuration, the movable contact portion 20 is moved by the electromagnetic action of the electromagnet 10 and the structure for returning the movable contact portion 20 by the urging force of the restoration spring 35 at the time of restoration becomes unnecessary. Since the movable contact and the second movable contact are extremely lightweight, the movement of the first movable contact and the second movable contact is made agile.
[0037]
As a result, it is easy to reduce the size and thickness and increase the number of channels, and it is possible to increase the speed of relay switching.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a basic configuration of a conventional relay.
FIG. 2 is an exploded perspective view showing one embodiment of the small relay of the present invention.
FIG. 3 is a plan view showing the small relay of FIG. 2;
FIG. 4 is a sectional view showing the small relay of FIG. 2;
[Explanation of symbols]
Reference Signs List 50 lever contact board 51 shape anisotropic magnet 52, 53, 54, 55 contact output terminal 56 cutout groove 60, 70 electromagnet board 61, 71 communication hole 62, 72 core 63, 73 sealing material 64, 65, 74 , 75 Contact signal input terminal 68, 78 Coil 69, 79 Conducting contact 80 Spacer 100 Inert gas

Claims (2)

A magnetic film generating means is formed by burying a magnetic material having shape anisotropy, and a contact film output terminal having first and second movable contacts is sandwiched between the magnetic field generating means. And a movable substrate of
An electromagnet is held at a position facing the magnetic field generating means, a fixed contact is formed at a position facing the first and second movable contacts, and the electromagnet is formed on a surface opposite to a surface on which the fixed contact is formed. A fixed substrate on which a contact signal input terminal for applying an exciting current to the pattern is formed ,
A small relay, wherein the first movable contact and the second movable contact are conducted through the fixed contact by attracting the magnetic field generating means by the electromagnet. 2. The movable substrate according to claim 1, wherein the fixed contact is interposed between the pair of fixed substrates opposed to each other, and the magnetic field generating unit and the contact output terminal are formed on both surfaces thereof. 3. Small relay.

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