JPH0815036B2 - Polarized relay - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarized relay, and more particularly to a polarized relay in which an armature oscillates.

[0002]

2. Description of the Related Art A conventional polarized relay of this type is disclosed in Japanese Utility Model Publication No. 47-42284, which uses a socket because the electromagnet portion and the contact portion are pulled out by a plug-in terminal. If it is possible, it has an advantage that it can be easily replaced with a non-defective product.

[0003]

However, in the above-mentioned conventional structure, since the permanent magnet is fixed to the fixed magnetic piece substantially at the center without any positioning means, it is difficult and accurate to position the permanent magnet with respect to the fixed magnetic piece. There is a problem that it is difficult to obtain magnetic balance and a polarized relay with stable bistable operation cannot be obtained.

Further, as a general method of attaching the permanent magnet to the fixed magnetic piece, welding or adhesion with an adhesive can be considered. Among them, welding is performed by using the magnetic field of the welded joint surface between the permanent magnet and the fixed magnetic piece. Since the resistance is high and the adhesive having a high magnetic resistance is interposed between the two, the magnetic resistance may increase in this case as well. In either case, the magnetic resistance of the magnetic path increases. There is a problem that the magnetic efficiency is deteriorated and the assembling work is troublesome.

The present invention is intended to solve the above problems, and enables stable bistable operation with good magnetic efficiency.
It is intended to provide a polarized relay which is easy to assemble.

[0006]

In order to achieve the above object, the present invention provides an intermediate wall in the middle, and both end walls integrally connected by a connecting portion to both sides of the intermediate wall. A coil frame in which a coil divided into two parts is wound, an intermediate portion is integrally provided on the coil frame by simultaneous molding, and a substantially U-shaped yoke whose both end magnetic pole surfaces are exposed from the coil frame, and a substantially central portion of the yoke. One side of the magnetic pole surface is attached and the permanent magnet positioned and fixed to the yoke by the intermediate wall of the coil frame is in close proximity to the other magnetic pole surface of the permanent magnet. In a polarized relay consisting of an armature that is capable of seesaw movement as much as possible and a movable contact spring that has movable contacts attached to both ends and the middle of the armature, a through hole is formed in the intermediate wall of the coil frame. Setting Characterized by comprising by attaching the approximate center of the yoke due to its own magnetic force one pole face of the permanent magnet and a permanent magnet inserted in the through hole.

[0007]

According to the above construction, the through hole is provided in the intermediate wall of the coil frame, and the permanent magnet is inserted into this through hole,
The magnetic pole surface of the permanent magnet on the side inserted into the through hole attracts the approximate center of the yoke by its own magnetic force, and the magnetic attraction force attaches the permanent magnet to the approximate center of the yoke. Since the permanent magnet can be positioned and fixed in the approximate center of the yoke without using a chemical agent, it is possible to realize a polarized relay with good magnetic efficiency without increasing the magnetic resistance. Simply insert the permanent magnet into the through hole in the intermediate wall. Therefore, the assembling work becomes easy and the manufacturing cost can be reduced.

Further, since both ends of the yoke are projected from both end walls of the coil frame, both ends of the yoke are fixed when the yoke is simultaneously molded into the coil frame, and the yoke is inserted into the through hole provided in the intermediate wall of the yoke. Since it is possible to insert a die pressing pin or the like for holding the yoke, it is possible to improve the positional accuracy of the yoke when integrally molding the yoke on the coil frame, and it is possible to improve the assembly accuracy of the polarized relay. It is a thing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a yoke, which is composed of an intermediate portion 1a and magnetic pole portions 1b, 1b at both ends, and is substantially U-shaped. Two
Is a permanent magnet located substantially in the center of the intermediate portion 1 a of the yoke 1. Reference numeral 3 denotes a coil frame having a shape conforming to a substantially U-shaped yoke 1 around which a coil 4 is wound. The magnetic pole portions 1b, 1b at both ends of the yoke 1 are both end walls 3a, 3a and an intermediate portion of the yoke 1. 1a is integrally positioned and fixed at the connecting portion 3c by a method such as simultaneous molding. At this time, since the yoke 1 which is a magnetic circuit component is integrally fixed to one coil frame 3 with high positional accuracy by a method such as simultaneous molding, the magnetic pole surfaces 1c and 1c of the magnetic pole portions at both ends of the yoke 1 and the permanent magnet 2 are formed. The mutual positional relationship with and can be obtained easily and accurately.

The intermediate wall 3b of the coil frame 3 is provided with a through hole 3d from the outside toward the center, and the magnetic pole portions 1b, 1b at both ends of the yoke 1 are projected from the both end walls 3a, 3a of the coil frame 3. There is. Here, when simultaneously molding the yoke 1 on the coil frame 3, a die pressing pin or the like for fixing both ends of the yoke 1 and pressing the yoke 1 into the through hole 3d provided in the intermediate wall 3b of the coil frame 3 is provided. The yoke 1 can be inserted, and the positional accuracy of the yoke 1 when integrally molding the yoke 1 on the coil frame 3 can be improved. Further, coil terminals 5, 5 and 6 are projected from the respective walls 3a, 3a and 3b of the coil frame 3.

On the other hand, the permanent magnet 2 is inserted into the through hole 3d provided in the coil frame 3 from one magnetic pole side (S pole side in FIG. 1), and the inserted magnetic pole surface is the yoke 1. The surface of the yoke 1 is in surface contact with substantially the center thereof, and one magnetic pole surface of the permanent magnet 2 can be attached to the center of the yoke 1 by its own magnetic force. As a result, the permanent magnet 2 can be attached to the yoke 1 without using welding or adhesive, and a polarized relay with good magnetic efficiency can be realized without increasing the magnetic resistance, and the permanent magnet 2 can be attached to the intermediate wall 3b. Since it is only necessary to insert it into the through hole 3d, the assembling work becomes easy and the manufacturing cost can be reduced.

Numeral 7 is a flat plate-shaped armature, and the intermediate portion 7b closely faces the permanent magnet 2 so that the intermediate portion 7b is magnetically connected to the permanent magnet 2 and both ends 7a, 7a are magnetic pole surfaces 1c, 1c on both ends of the yoke 1. It is installed so that the seesaw can move in and out of contact with. The movable contact spring 8 is fixed to the intermediate portion 7b. In the movable contact spring 8, the intermediate 8a is an amateur 7
Fixed to the middle portion 7b of the fixed contact 1 at both ends 8b and 8b.
Movable contacts 9 and 9 facing 1 and 11 are attached. Also, from the middle 8a of the movable contact spring 8, the central common terminal 10
Is extended.

Now, when current is applied to the coil 4 from one direction, the armature 7 swings, one end 7a of the armature 7 abuts on one magnetic pole surface 1c of the yoke 1, and the other end 7a of the armature 7 on the other side of the yoke 1. The movable contact 9 at one end of the movable contact spring 8 comes into contact with one fixed contact 11, and the movable contact 9 at the opposite side is separated from the other fixed contact 11 at the same time. Even if the energization of the coil 4 is stopped, it is generated from the permanent magnet 2, and the armature 7 maintains the same state due to the magnetic flux passing through the closed magnetic circuit of the one end 7a of the armature 7 → the one magnetic pole 1b of the yoke 1 → the permanent magnet 2. .

Next, when the current flowing direction of the coil 4 is reversed, the armature 7 swings to the opposite side again, and the other end 7a of the armature 7 abuts on the other magnetic pole surface 1c of the yoke 1 and together with it. The other movable contact 9 is the other fixed contact 11
To contact. Even if the current is stopped, the same state is maintained as described above. In this way, a so-called bistable polarized relay can be realized.

In the above structure, the two components, the yoke 1 and the permanent magnet 2, which are magnetic circuit components that require relative positioning, are accurately positioned and fixed by one component, the coil frame 3, so that the permanent magnet is fixed. 2 can be accurately positioned in the central portion of the yoke 1, whereby an extremely high degree of magnetic balance can be obtained, and a stable bistable polarized relay can be obtained. Furthermore, the permanent magnet 2
Can be fixed only by inserting it into the through hole 3d provided in the intermediate wall 3b of the coil frame 3, so that the assembling work becomes easy and the manufacturing cost can be reduced.

On the other hand, since both ends of the yoke 1 are made to project from both end walls 3a of the coil frame 3, both ends of the yoke 1 are fixed and an intermediate wall of the yoke 1 is formed when the yoke 1 is molded simultaneously with the coil frame 3. A die pressing pin or the like for pressing the yoke 1 can be inserted into the through hole 3d provided in 3b, and the positional accuracy of the yoke 1 when integrally molding the yoke 1 on the coil frame 3 can be improved, It is possible to improve the assembly accuracy of the polarized relay.

Further, since the coil 4 is provided in an intermediate portion of the yoke 1 having a substantially U shape, when the coil 4 is wound by a winding device or the like, the winding direction of the coil 4, that is, the yoke 1 In the direction orthogonal to the intermediate portion, the constituent members that hinder the winding of the coil 4, for example, the bent both-end magnetic pole portions 1b of the substantially U-shaped yoke 1 and the permanent magnet 2 are not arranged, so that the substantially U-shaped The coil 4 is wound around the yoke 1 in two, and the coil 4 is easily wound in the same manner as when the coil is wound around a coil frame having a rod-shaped iron core inserted therein, and the assembly is simplified. You can

Since the coils 4 are provided on both sides of the intermediate wall 3b so as to be adjacent to each other, the coil 4 is wound in one coil frame 3 without requiring two separate coil frames even though it is a two-part winding. Can be installed without increasing the number of parts,
A polarized relay that is easy to assemble can be obtained.

[0019]

According to the present invention, the intermediate frame is provided in the middle, the both end walls integrally connected by the connecting portion are provided on both sides of the intermediate wall, and the connecting portion is wound with the coil divided into two parts. And a substantially U-shaped yoke in which an intermediate portion is integrally formed on the coil frame by simultaneous molding and both end magnetic pole surfaces are exposed from the coil frame, and one of the magnetic pole surfaces is attached to approximately the center of the yoke and the coil frame A permanent magnet that is positioned and fixed to the yoke by an intermediate wall; and an armature whose middle is closely opposed to the other magnetic pole surface of the permanent magnet and whose both ends are moveable to the magnetic pole surfaces of both ends of the yoke in a seesaw manner. In a polarized relay consisting of moving contact springs attached to both ends and the middle of which is attached to the middle part of an amateur, a through hole is provided in the intermediate wall of the coil frame, and a permanent magnet is inserted into this through hole. Permanent magnet Since one magnetic pole surface was attached to the approximate center of the yoke by its own magnetic force, a permanent magnet can be attached to the yoke without using welding or adhesive, and the magnetic resistance does not increase and the magnetic efficiency is improved. A good polarized relay can be realized, and since it is only necessary to insert the permanent magnet into the through hole of the intermediate wall, there is an effect that the assembling work becomes easy and the manufacturing cost can be reduced.

Further, by projecting both ends of the yoke from both end walls of the coil frame, both ends of the yoke are fixed and a yoke is provided in a through hole formed in the intermediate wall of the yoke when the yoke is simultaneously molded into the coil frame. It is said that it is possible to insert mold holding pins etc. for holding down, to improve the positional accuracy of the yoke when integrally molding the yoke on the coil frame, and to improve the assembly accuracy of the polarized relay. effective.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 1 yoke 2 permanent magnet 3 coil frame 3a end wall 3b intermediate wall 3c connecting portion 3d through hole 4 coil 7 amateur

Claims (2)

[Claims] 1. A coil frame, in which an intermediate wall is provided in the middle, both end walls integrally connected by a connecting portion are provided on both sides of the intermediate wall, and a coil divided into two parts is wound around the connecting portion, and an intermediate portion. Is integrally provided on the coil frame by simultaneous molding, and a substantially U-shaped yoke whose both end magnetic pole faces are exposed from the coil frame, and one of the magnetic pole faces is attached to substantially the center of this yoke, and the yoke is formed by the intermediate wall of the coil frame A permanent magnet that is fixedly positioned with respect to the permanent magnet, an armature that has an intermediate portion closely facing the other magnetic pole surface of the permanent magnet, and both ends that are provided so that the seesaw can move to and from the magnetic pole surfaces of both ends of the yoke. In a polarized relay consisting of a movable contact spring with the intermediate part attached to the intermediate part of the armature, a through hole is provided in the intermediate wall of the coil frame, and a permanent magnet is inserted into this through hole to insert one of the permanent magnets. Porcelain A polarized relay characterized in that the pole surface is attached to the approximate center of the yoke by its own magnetic force. 2. The polarized relay according to claim 1, wherein both ends of the yoke are projected from both end walls of the coil frame.