JPS6084805A - Three-dimensionally stabilized electromagnet apparatus - Google Patents

Abstract

PURPOSE:To accurately stop an armature to a neutral position under the non-excited condition by providing a first and a second permanent magnets being placed between the one side portion of E-shaped yoke including the protruded part and the one electromagnet coil, arranged vertically to the extending portion, allowing the one magnetic pole to be in contact with the extending part. CONSTITUTION:A yoke 1 is composed of an extending part 1a, the one side part 1b and the other side part 1c at the right angle to both ends and a protruded part 1d protruded from the area near the center. The armature 2 respectively forms the protruded part 2c at the area near the center of body and the protruded parts 2d, 2e at both ends and the surfaces 2a, 2b to be in contact with the poles are provided opposite to the side portions 1b, 1c of the first yoke 1. The electromagnetic coils 4, 5 are arranged in both sides of the protruded part 1d of yoke 1. A permanent magnet 3a is provided between the side part 1b of yoke 1 and electromagnetic coil 4, while a permanent magnet 3b between the side part 1c of yoke 1 and electromagnetic coil 5. The N pole is in contact with the extending part 1b. An attracting force is generated between the permanent magnet 3a and protruded part 2d of armature 2, between the permanent magnet 3b and protruded part 2e, and between the protruded part 2c and protruded part 1d of first yoke 1.

Description

[Detailed Description of the Invention] Technical Field The present invention includes a permanent magnet interposed in a magnetic circuit, and the magnetic flux of this permanent magnet! ! 'A polarized 1F magnet device that moves the armature back and forth by superimposing and attenuating the magnetic flux of the magnetic coil, and is a so-called 3-stable type in which the armature magnetically remains at the center position when the electromagnetic coil is not excited. Regarding military magnet device 1c.

BACKGROUND ART A prior art three-stable connecting electromagnet device, as shown in FIG. 1, is an 11° four-component device shown in Japanese Utility Model Application Publication No. 53-98954. This three-stable electromagnet device consists of a yoke A, magnetic coils Bl, B2, armature C1 output rods Di, D2. and spring E.

Has Fi. When the electromagnetic coil B1 is excited, the output rod Di,
D2 is moved in the direction of the arrow Y, and when the electromagnetic coil B2t is energized, the output rod DI, D2 is moved in the direction of the arrow Y. For amateur C, output rod D1. D2 is screwed together.

One ends of the bats t2E and F are fixed to the amateur CIC, respectively, and the other ends are fixed to the yoke A, respectively. Spring E
, F's extension 4 force allows the armature C to stand still in the neutral position as shown in clause 11 when the lightning, magnetic coils Bl and B2 are de-energized, but such a stationary part of the armature C is extremely unstable. there were.

Purpose Honishimei's purpose is to solve the above-mentioned technical problems and provide a complete three-stable electromagnet device that can reliably stop the armature in a neutral position when the electromagnetic coil is not energized without relying solely on spring force. It is to be.

Example FIG. 2 is a cross-sectional view of one embodiment of the present invention.

A Y-shaped yoke 1 made of a ferromagnetic material has an extension part la, one side part 1b perpendicular to both ends of the extension part 1a, a side part 1c, and a side part 1c of the extension part 1a. It is formed from a protrusion 1d protruding from near the center. Amateur 2 is York 1
between one side 1b and the forging side IC, a salient pole part 2c near the center of the body, salient pole parts 2d at both ends,
A cylindrical pipe made of a non-magnetic material η is arranged so as to be able to reciprocate within the pipe 8. The armature surface 2au of the armature 2 faces the side portion 1b of the first: I-ri 1, and the armature surface 2b of the armature 2 faces the side portion 1c of the fJ1 yaw. The electromagnetic coil 4.5 is connected to the yoke 1
They are placed on both sides with the protrusion 1d in between.

The permanent magnet 3a is interposed between the yoke lq side portion 1b and the electromagnetic coil 4, and has seven N poles t! 'i is in contact with the extended portion 1aVc, and the S pole of t faces the salient pole portion 2d of the abutment 2.

The permanent magnet 3b is connected to the side IC of the yoke 1 and the electromagnetic coil 5.
The seventh N pole is in contact with the extending portion 1a, and the S
The pole faces the salient pole portion 2e of the amateur 2. Coil frame 6
, 7 are tributary holes 6a in the axial direction of the coil frames 6 and 7 that surround and fix the coil 45 and position each component.
, 7a, the gate pipe 8 is inserted, and the kite pipe 8
Amateur 2 is inserted inside. The salient pole portion 2c of the armature 2 faces the end side surface of the protrusion portion 1d of the yoke 1.

One end of the return spring 9 is fixed to the fixed plate 9A-, and the other end of the return spring 9 is fixed to one end of the output rod 11 (2). . The other end of the output rod 11 is screwed into one of the amateurs 2. One end of the return spring 1o is fixed to the fixing plate 10A, and the other end is fixed to one end of the output rod 12. The other end of the output rod 12 is a return spring 9, 10I/'i screwed to the other end of the armature 2, which returns the armature 2 to the neutral position when the electromagnetic coils 4, 5 are non-magnetic. The output rod 11112 outputs #:1 force so that it can be used.

FIG. 3 is a graph showing the magnetic attraction force characteristics and spring load characteristics of the amateur 2. The operation of the embodiment shown in FIG. 2 will be described with reference to the graph in FIG. 3 as well. FIG. 2 shows a state in which neither of the electromagnetic coils 4.5 is excited, and the magnetic fluxes i11' and pf of the permanent magnet 3a are present in the magnetic circuit.
4. f2. to the magnetic flux of the permanent magnet 3b. $5 flows as shown by the solid line. The magnetic attraction force exerted on the armature 2 by the magnetic flux 251 of the permanent magnets 3a and 3b is expressed by line 1 as shown in FIG.
04 and line 108. A line 109 in FIG. 3 shows the spring load characteristics due to the return springs 9 and 10. Due to the magnetic fluxes y4 and me5 of the permanent magnets 3a and 3b, magnetic fluxes are generated between the permanent magnet 3a and the protrusion 2d of the armature 2, between the permanent magnet 3b and the protrusion 2e of the armature 2, and between the protrusion 2C and the first yoke l. A magnetic attraction force acts between the armature 2 and the protrusion 1d, and the armature 2 comes to rest at a neutral position.

To explain this using Fig. 3, the magnetic attraction force acting on the armature 2 becomes like a beak bite 110,
is magnetically stopped in a neutral position as shown in FIG.

Assuming that the electromagnetic coil 5 is excited in FIG. 2 and the magnetic flux 03 due to the electromagnetic coil 5 flows as shown by the broken line, the magnetic fluxes 02 and 02 of the permanent magnets 3a and 3b and the magnetic flux 03 and k are in the air gap a. They overlap each other with gaps in between. Therefore, amateur 2Fi moves in the direction of arrow W.

In FIG. 3, line 101Fi! The line 102 shows the attraction force characteristics when the magnetic coil 5 is excited at its rated value.
shows the attractive force characteristics when the electromagnetic coil 5 is subjected to W&dynamic excitation. Further, line 103 shows the attractive force characteristic when a 1M electromagnetic coil is subjected to open excitation 1i11&. A line 105 shows the attraction force characteristics when the IF electromagnetic coil is excited at its rated value, a line 106 shows the attraction force characteristics when the electromagnetic coil 4 is excited with an emotional excitation, and a line 107 shows the attraction force characteristics when the electromagnetic coil 4 is excited. This shows the attractive force characteristics when open excitation is performed.

In order to return the armature 2 that has moved in the direction of arrow W in FIG. 2 to the neutral position, the excitation of the electromagnetic coil 5 is released. Due to the relationship, the armature 2I"i returns to the neutral position again. In order to further move the armature 2 in the direction of the arrow Y, the electromagnetic coil 4 only needs to be energized, and the operation is the same as described above.

Effects As described above, according to the present invention, the electromagnetic coil has no b [to 2
This allows the amateur to stand still in a truly neutral position.

[Brief explanation of drawings]

No. 1 is a cross-sectional view of a prior art three-stable ix ridge device;
FIG. 2 is a cross-sectional view of one embodiment of the present invention, and FIG. 3 is a graph showing magnetic attraction force characteristics and spring load characteristics acting on the armature 2 of one embodiment. 1a...extension part, lb, lc...side part, ld...
・Protrusion, 1...Yoke, 2a, 2b...Archive surface,
2c... salient pole part, 2... AV tube, 3a... first permanent magnet, 3b... second permanent magnet Representative Patent Attorney Kei Nishi Part Proceedings Amendment Book 11 Display Patent Application No. 58-192686 2. Name of the invention 3. Stable electromagnet device 3. Name related to the amended person case (583) Matsushita Electric i Co., Ltd., company address: Representative 4, agent address: Nishi-ku, Osaka City Shinkosan Building 6, 1-13-88 Nishihonmachi, Column 7 for detailed explanation of the invention in the specification subject to amendment, Contents of amendment (1) "Arrow Y" in line 20 of page 2 of the specification. Correct "Arrow W" to "Arrow W". that's all

Claims (1)

[Claims] An E-shape that includes an extending portion, both ends Wc of the extending portion, one side portion and the other side portion, and a protruding portion protruding from near the center of the extending portion. a yoke of a shape, and a yoke between the one side portion and the other side portion, each side surface of the body portion at both ends being a contact surface between the one side portion and the other side portion, and a chest portion. An armature with a salient pole near the center is placed on both sides sandwiching the protruding part of the aria yoke, and the armature is energized by electric power to move the armature in the axial direction of the extending part of the yoke.
11 Magnetic coil 7, one side of the shoe and one side of the coil (a), the magnetic pole axis direction is arranged perpendicular to the extending part Vc of the yoke, and one of the magnetic poles extends between the other side of the yoke and the other t-magnetic coil, the magnetic pole axis direction is placed on duty in the extending part of the yoke, and the other side of the magnetic pole is placed in the extending part. A tri-stable electromagnet device comprising: a second permanent magnet in contact with the second permanent magnet;