JPH0219929Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an electromagnetic device that converts electrical signals into mechanical displacement to perform various controls, and in particular, an electromagnetic device that facilitates the assembly of such an electromagnetic device. The present invention relates to an electromagnetic device having an improved structure.

(Prior Art) Electromagnetic devices that perform various controls by converting electrical signals into mechanical displacement are known.

For example, Utility Model Application No. 57-66505 "Structure of electromagnetic equipment"
has a yoke formed of a pair of left and right pole pieces bent so that the base and tip parts face each other; a T-shaped movable piece that is a convex curve corresponding to the movable piece; a stopper made of a non-magnetic material that extends upward through the gap between the tips of the pole pieces at the center of the upper end of the movable piece; and the yoke. When one tip of the pole piece is made one pole, the other tip becomes the other pole, and when one tip is made the other pole, the other tip becomes the one pole. . According to this structure, the movable piece does not come into contact with the two pole pieces, so it will not come off when moving.
It allows for faster speeds.

(Problems that the invention aims to solve) However, such electromagnetic devices have a structure that requires high-speed use and requires the entire device to be compact, making it difficult to assemble and requiring time and effort during manufacturing. The point was hot.

This invention can meet the demand for miniaturization,
Moreover, it is an object of the present invention to provide an electromagnetic device having a structure that is easy to assemble.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the electromagnetic device according to the present invention includes a bobbin having a rectangular hollow part and a claw part constituting a bearing in an opening on the lower side of the hollow part. , a winding wound around the bobbin, a yoke arranged such that first and second arms face each other, first and second side plates having shoulders, and a swing center at the base. a movable iron core having a bearing hole and swinging at a constant interval inside the shoulder portions of the first and second side plates; and a shaft serving as a swing center of the movable iron core;
a permanent magnet, the bobbin is wound with a wire,
The movable iron core is inserted into the hollow part of the bobbin from above, the shaft is inserted into the bearing hole of the movable iron core, and the shaft of the movable iron core is held between the claw part of the bobbin and the yoke to form a bearing. inserting the bobbin into the yoke so as to insert the first side plate between the first arm of the yoke and the bobbin;
The second side plate and the permanent magnet are inserted between the second arm of the yoke and the bobbin so that the shoulders of the side plates cover the movable iron core.

According to the above structure, the object of the present invention can be completely achieved.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to the drawings and the like.

FIG. 1 is a diagram showing the overall configuration of an embodiment of the electromagnetic device according to the present invention, and FIGS. 2 to 9 are diagrams showing each part of the device according to the embodiment, and FIG. , Figure 3 shows the yoke, Figure 4 shows the movable core,
FIG. 5 shows a contactor, FIG. 6 shows a side plate, FIG. 7 shows a permanent magnet, FIG. 8 shows a substrate, and FIG. 9 shows a shaft.

As shown in FIG. 2, the bobbin 2 has a main body 20 and collars 21 and 22 integrally formed therein. Main body 2
0 has a prismatic shape, and a hollow portion 20a is formed in the center. The opening of the hollow part 20a on the lower side of the collar 22 is provided with claws 23, 23 forming a bearing (Fig. 2c), and the collars 21, 22 are provided with holes 24 for inserting terminal pins. ing. Legs 25,
26 is provided for positioning during assembly. Protrusions 27 are provided on the sides of the ribs 21 and 22 to facilitate positioning when attaching them to a device to be controlled.

As shown in FIG. 3, the yoke 3 has legs 31 and 32 formed by bending both sides of a magnetic metal plate. Openings 33, 34 and notches 35, 36 are provided on the bottom surface. left and right legs 31,
32 is provided with an opening 37 and a notch 38.

As shown in FIG. 4, the movable core 4 is provided with arm portions 41 and 42 on the left and right sides of its upper portion, and a mounting portion 43 for the contactor 5 is provided on the top portion. A shaft hole 44 is bored in the lower part.

The contactor 5 is connected to the movable core 4 as shown in FIG.
A hole 51 into which a mounting portion 43 is inserted is bored. Support parts 53, 53 are provided before and after the hole 51, and support the front and rear surfaces of the movable iron core 4.
The contactor 5 is molded from a non-magnetic synthetic resin. 52 is a lever for engaging with a controlled object.

As shown in FIG. 6, the side plate 6 has a shoulder portion 6 at the upper end.
A is bent and raised, and a hole 6b is bored in the center. The side plate 6, as shown in FIG.
A left side plate 61 and a right side plate 62 are arranged.

As shown in FIG. 7, the permanent magnet 7 has a rectangular parallelepiped shape, and one pole is colored for identification in the direction of the magnetic field as shown in FIG. 7b.

The substrate 8 is a magnetic material, and as shown in FIG. 8, a cross hole 81 for a bearing is provided in the center, and positioning notches are formed in the four corners.

The shaft 9 is a non-magnetic shaft for forming the central axis of swing of the movable iron core 4 (FIG. 9).

Next, a procedure for assembling the electromagnetic device according to the present invention will be explained.

First, wind the wire 28 on the bobbin 2 using a winding machine or the like.
I do. Second, the hole 51 of the contact 5 is inserted into the mounting portion 43 of the movable core 4 and bonded. Third, the movable iron core 4 is inserted into the hollow portion 20a of the bobbin 2, and the shaft 9 is inserted into the shaft hole 44 of the movable iron core 4.

Fourth, the bobbin 2 is inserted into the yoke 3 via the substrate 8, and the positioning portions are aligned. The yoke 3, the pawl 23 of the bobbin 2, and the substrate 8 constitute a bearing section.
Fifth, the left side plate 61 is inserted between the bobbin 2 and the yoke 3. Sixth, the permanent magnet 7 is adhered to the right side plate 62 and inserted between the bobbin 2 and the yoke 3. Finally, fill the recess of the coil part with adhesive to fix the whole.

Next, the operation of the electromagnetic device according to the present invention will be explained.

The permanent magnets 7 are arranged with the polarities shown in FIG. When the coil is not energized, the side plate 6
1 is the south pole, the side plate 62 is the north pole, and the movable iron core 4 is the south pole, so the movable iron core 4 is attracted to the side plate 62 and is inclined. When the coil is energized, the polarity of the side plates 61 and 62 is reversed, so the movable iron core 4
is sucked and held on the side plate 61 side. This action
Perform at 150-200Hz.

The electromagnetic device according to the present invention can be widely used as an electromagnetic device for precision equipment, such as a camera shutter drive device.

(Effects of the Invention) As explained above in detail, the electromagnetic device according to the present invention has a structure that is easy to assemble while meeting the demand for miniaturization.

That is, since it can be assembled without using any screws, efficiency during assembly can be improved.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the overall configuration of an embodiment of the electromagnetic device according to the present invention, and FIGS. 2 to 9 are diagrams showing each part of the device according to the embodiment, and FIG. , Figure 3 shows the yoke, Figure 4 shows the movable core,
FIG. 5 shows a contactor, FIG. 6 shows a side plate, FIG. 7 shows a permanent magnet, FIG. 8 shows a substrate, and FIG. 9 shows a shaft. 2...Bobbin, 3...Yoke, 4...Movable iron core, 5...Contactor, 6...Side plate, 7...Permanent magnet, 8...Substrate, 9...Shaft.

Claims (1)

[Scope of utility model registration request] A bobbin having a rectangular hollow part and a claw part constituting a bearing in an opening below the hollow part, a winding wound around the bobbin, and first and second arms are arranged so as to face each other. a first yoke having a shoulder portion;
and a second side plate, a movable iron core having a bearing hole as a center of swing at the base and swinging at a constant interval inside the shoulder portions of the first and second side plates, and the movable iron core. The bobbin is wound with a wire, the movable core is inserted into the hollow part of the bobbin from above, and the shaft is inserted into the bearing hole of the movable core. The bobbin is inserted into the yoke so that the shaft of the movable iron core is held between the claw portion of the bobbin and the yoke to form a bearing, and the bobbin is inserted between the first arm of the yoke and the bobbin. The first side plate is configured by inserting the second side plate and the permanent magnet between the second arm of the yoke and the bobbin so that the shoulder of each side plate covers the movable iron core. Electromagnetic device.