JPS60263410A - Polarized electromagnetic solenoid - Google Patents

Abstract

PURPOSE:To reduce an electric power consumption and to miniaturize by arranging an electromagnetic coil winding on a movable iron core, a permanent magnet magnetized at right angles to the axis of the movable iron core, and the yoke forming a magnetic cavity with the movable iron core. CONSTITUTION:When an electromagnetic coil 4 is not excited, a magnetic flux phi1 of a permanent magnet 5 flows in a magnetic circuit and one end 2a of a movable iron core 2 is attracted to a bottom 30a against the spring power of a coil spring 40. When the electromagnetic coil 4 is excited, a magnetic flux phi2 flows. Thus, the magnetic flux phi1 and the magnetic flux phi2 decay each other in a magnetic cavity A formed by a yoke. Consequently the movable iron core 2 is moved in the direction of an arrow W by a spring power of the coil spring 40. A lever 41 moves down in accordance with the movement of the movable iron core 2, and a projection 42a of a push button 42 is depressed by the pressing part 41a of the lever 41. When the electromagnetic coil 4 is deexcited, it returns to an original condition.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention is implemented in, for example, a printed board, etc., and the so-called non-polar type which does not have a permanent magnet is used. This is because the non-& type electromagnetic solenoid has a simple structure, and therefore it is easy to miniaturize it to be suitable for mounting on a printed circuit board.

In such a non-polar electromagnetic solenoid, the excitation coil must be continuously excited in order to maintain the operating state of the l1il cut iron core, and therefore the power consumption is large.

Furthermore, while the non-polar electromagnetic solenoid operates regardless of the polarity of the excitation coil, it cannot be operated after selecting the polarity of the excitation coil. Although these drawbacks can be solved with a self-polar solenoid, since a polarized solenoid is a permanent magnet,
Due to the fixed structure of the permanent magnet and the installation structure of the external terminals, it was not possible to use small-sized solenoids, so it was not used for printed circuit board mounting on small-sized solenoids.

Objective 1'21 The objective of the present invention is to solve the above-mentioned technical problems and provide a polarized electromagnetic solenoid that can be made smaller and empty.

Embodiment FIG. 1 is a longitudinal sectional view of a solenoid 1 according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view taken along the section line II of FIG.
FIG. 3 is a cross-sectional view taken from -II, and FIG. 3 is an exploded perspective view thereof. This electromagnetic solenoid is a basic component that can be moved in the axial direction.
The coil frame 3 is pushed through, and the coil frame 3 is wound around the coil frame 3.
It includes an electromagnetic coil 4, a permanent magnet piece 5, a yoke 6 surrounding the coil frame 3, and a lid 7 that is engaged with the yoke 6.

The coil frame 3 includes a cylindrical body 8 and a flange portion 9.10,
The iJ moving iron core 2 is inserted into the push-through hole 11 of this circular fishing body 8.
1i L, and is disposed so as to be movable in its axial direction. The electromagnetic coil 4 is wound between the flange portions 9 and 10 of the coil frame 3.

Fitting holes 12 and 13 are formed in the flange portion 10 . The fitting holes 12 and 13 are arranged on one diameter line of the flange portion 10. One end of each external terminal 14.15 extending parallel to the axis of the movable iron core 2 is inserted into the fitting hole l' 2.13 and fixed integrally therewith. External terminal 1
The spacing of 4.15 is approximately the same as the spacing of the holes 17° and 18 formed in the printed circuit board 16 (3). A notch 19.20 is formed in the flange portion 10 at a position corresponding to the fitting hole 12.13, and the electromagnetic coil 40 winding terminal 11j passes through this notch 19.20 to the external terminal 14. 15 by soldering or the like. In addition, the flange portion 1O has recesses 21 and 22 that open radially outward.
It is formed on the radial line of 0. This recess 21.22
is located at a position shifted by 90 degrees from the notches 19 and 20. A pair of permanent N stone pieces 5 are housed in this recess 21,22. This permanent magnet piece 5 is magnetized in a direction perpendicular to the axial direction of the movable iron core 2.

The yoke 6 arranged H surrounding the coil frame 3 includes a first cylindrical part 30 and a second cylindrical part 31 that is continuous with the first cylindrical part 30 and has a larger diameter than the first cylindrical part 30.

The first cylindrical part 30 and the second cylindrical part 31 have the same axis. First cylindrical part 30td, I& part 30a and circumferential part 30b
It consists of The diameter Ir of this first cylindrical portion 30 is selected to be approximately 110 mm. Step surfaces 32 and 33 are formed on the inner surface (4) of the second cylindrical portion 31. The yoke 6 and the flexible iron core 2 form a magnetic flux path through which the magnetic flux of the permanent magnet piece 5 or the electromagnetic coil 4 flows. Furthermore, the yoke 6 can reduce as much as possible the magnetic influence from other electronic circuit assemblies mounted on the printed circuit board 16.

A cover body 7t/'i that is held in the opening of the yoke 6 is made of a non-magnetic material and has a circular plate-shaped body 35 having a diameter that is almost the same as the opening of the yoke 6, and a flange portion is formed from the plate-shaped body 35. 10
A pair of protruding pieces 36 extending toward. This protruding piece 3flj performs a positioning action when storing the permanent magnet piece 5 in the recess 21, 22 of the coil frame 3. The lid 7 is provided to prevent the coil frame 3 and the permanent magnet piece 5 from falling off the yoke 6. Lid body 7
A push-through hole 38 through which the movable iron core 2 is pushed is formed in the center of the movable iron core 2 . This push-through hole 38 is sandwiched between the external terminal 14.1 and the external terminal 14.1.
A push-through hole 39,40 through which the screw 5 is pushed is formed.

One end of a coil spring 40 is identified on one end surface of the movable iron core 2 facing the printed circuit board 16, and the other end of the coil spring 40 is fixed to the printed circuit board 16. Therefore, Tsukasa! The IJ iron core 2 is spring-biased in the direction of arrow W. Note that the diameter of the town I# iron core 2 is selected to be approximately 3 mm to 5 mm. A printed circuit board 16 is attached to one end of the monthly cut iron core 2 (lower end in Fig. 1).
A lever 41 parallel to is connected with a pin. Lever 41
pressure.

Below the capital 41a, a push button 42 is connected to the printed circuit board 16.
Fixed. The lever 41 can come into contact with and separate from the protrusion 42a of the push button 42 as the flexible wJ iron core 2 moves.

When assembling the electromagnetic solenoid 1 having such a configuration, the permanent magnet pieces 5 are housed in the recesses 21 and 22 of the coil frame 3, respectively, and the coil frame 3 is pushed into the yoke 6 in this state. do. Thereafter, the external terminals 14 and 15 are inserted into the push-through holes 39 and 40 of the lid body 7, respectively, and the protruding pieces 36 are inserted along the outer surface of the permanent magnet piece 5 onto the stepped surface 33 of the second circular hook part 31.
Push in with a trench that touches the. In this state, the peripheral edge of the plate-like body 35 of the lid body 7 is brought into contact with the step surface 32 of the second cylindrical part 31 and is bonded with adhesive or the like.

Referring to FIG. 1, an explanation will be given of the electromagnetic solenoid 10h1 design seat that implements such a configuration. FIG. 1 shows a state in which the electromagnetic coil 4 is not excited, and the magnetic flux φl of the magnetic filter piece 5 flows through the magnetic circuit. Magnetic flux φ, ■ is the N camphor of the permanent magnet piece 5 - movable iron core 2 → No. 11'] cylindrical part 30
Bottom part 30a - cylindrical part 30b → second cylindrical part 31 → tray body 7
→It becomes the S pole of the Hiku magnet piece 5. Therefore, one end portion 2a of the UJ-Yoshin 2 is absorbed by the bottom portion 30a against the spring force of the coil spring 40.

When the electromagnetic coil 4 is excited, a magnetic flux φ2 flows as shown by the broken line in FIG. Therefore, the magnetic flux φl and the magnetic flux φ2 attenuate each other in the magnetic gap A. Therefore, the movable iron core 2 is moved in the direction of arrow W by the spring force of the coil spring 40. As the movable iron core 2 moves, the lever 41 also moves downward, so that the protrusion 42a of the push button 42 is pressed by the suppressing parts -1 and 8 of the lever 41. In this state, the electromagnetic coil When 4 is reverse excited, bJ!I
J Autumn Heart 2 returns to its original state as shown in the first diagram.

Although the electromagnetic solenoid l according to the present invention was used for mounting on a printed circuit board in the above-described embodiments, it is not limited thereto, and can be implemented in a wide range of other techniques.

Effects As described above, according to the present invention, the i
jJ if! The IJ iron core, the electromagnetic coil that winds the movable iron core, the permanent magnet piece that is magnetized in a direction perpendicular to the axis of the wJ iron core, the electromagnetic coil and the movable iron core, and the magnetic air gap between the movable iron core and the magnetic air gap. Since the terminal of the electromagnetic coil 11 is arranged to extend outside the yoke, it is possible to achieve miniaturization. Furthermore, it is possible to reduce power consumption.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a modified electromagnetic solenoid 1 according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken from section line II-II in FIG. 1, and FIG. 3 is an exploded perspective view thereof. be. DESCRIPTION OF SYMBOLS 1... Polarized 1M electromagnetic solenoid, 2... oJ moving iron core, 3... Coil frame, 4... Electromagnetic coil, 5... Hiku magnetic filter piece, 6... Yoke, 7... ... Lid body, 16...
Printed circuit board, 40...Coil spring, A...Magnetic gap Agent Patent attorney Kei Shikyo - IJIS

Claims (1)

[Scope of Claims] An electromagnetic coil that can move *JHJ in the axial direction, a magnetic coil that winds a movable J iron core, and a permanent magnet piece that is magnetized in a direction perpendicular to the axis of the movable iron core. , Surrounding the electromagnetic coil and the flexible scissors core, the cutting scissors core and the magnetic '! I! A self-polar electric abrasive solenoid comprising a yoke forming a gap, and a terminal of the electromagnetic coil extending outside the yoke.