JPS59148303A - Electromagnet device - Google Patents

Abstract

PURPOSE:To prevent a magnetic attractive force from yielding to the spring load by a method wherein a horizontally shifting type armature, which meets and parts with each pole contact suface of the 1st and the 2nd yoke, is provided and the magnetic attractive force grows rapidly in accordance with the shifting of the armature. CONSTITUTION:The 2nd yoke 34 is provided to a center part of the U-shaped 1st yoke 30 through a permanent magnet 36. On the other hand, an armature plate 39 is attached to one end of a horizontally shifting type armature 37 and the end part of the armature plate 39 is positioned between the pole contact part 32 of the 1st yoke 30 and the pole contact part 35 of the 2nd yoke 34. With this configuration, if a current is applied to a coil 45, the flux flows through two routes shown by dot lines so that the plate 39 is attracted by the pole contact part 32. At the final stage of the attraction, all the flux flows through the pole contact part 32 and does not flow through the permanent magnet 36 so that the attractive force of the plate 39 grows rapidly. With this constitution, the magnetic attractive force of the armature is prevented from yielding to the external spring load and from stopping.

Description

[Detailed Description of the Invention] Technical Field The present invention involves a permanent magnet interposed in a magnetic circuit composed of an armature and a yoke, and the armature is moved by superimposing the magnetomotive force of a coil on the magnetic flux of the permanent magnet. The present invention relates to a so-called polarized electromagnet device.

Prior Art FIG. 1 is a basic structural diagram of a polarized electromagnet device in the prior art. A U-shaped yoke 1 made of magnetic material has a left side piece 2 and a right side piece 3 whose inner surfaces are polarized surfaces, and a horizontal piece 4 that connects the left and right side pieces 2 and 3 in a row. The yoke 5 has a length shorter than the left and right pieces 2.3 of the yoke 1, and has a horizontal piece 4.
face to face.

The left and right outer surfaces of the old wire 5 are used as armature surfaces 6 and 7.

The permanent magnet 8 is interposed between the yoke 1 and the yoke 5, and its magnetization axis direction is perpendicular. Yoke 1, yoke 5, and permanent magnet 8 are arranged one above the other as one block. It has 9 armatures, is of horizontal transition type, and consists of a horizontal bar 12 and armature plates 10 and 11. amateur plate 10t
/'i, its inner and outer surfaces are connected to 4 笇 and 13.14. The armature plate 11 has both its inner and outer surfaces serving as armature surfaces 15 and 16. The armature surface 13 of the armature plate 10 faces the tangent 4j41]]6 of the yoke 5, and the armature 14 of the armature plate 10 faces the armature 17 of the left piece 2 of the yoke l. Armature surface 15 of armature plate 11
The armature plate 11 faces the polarization direction 7 of the yoke 5.
The polarity direction 16 of the yoke 1 is different from the polarization direction 18 of the yoke 1. There is an air gap 19 between the armature direction 6 and the armature surface 13, and an air gap 20 between the armature direction 14 and the armature direction 17.
has. There is still an air gap 21 between the armature direction 7 and the armature surface 15, and an air gap 22 between the armature direction 16 and the armature direction 18. Amateur 9 is in coil 23
A horizontal bar 12 passes through it.

The magnetic flux of the permanent magnet 8 is shown by x, and the magnetic flux of the coil 23 is shown by broken green y. The magnetic flux X of the permanent magnet 8 flows as follows. N pole of permanent magnet 8 - yoke 1 - air gap 2o
and 22 -> armature plate 1O and 11 - yoke 5 - S pole of permanent magnet 8.

The magnetic flux yIfi of the coil 23 flows as follows. coil 2
3-+horizontal bar 12→armature plate 10-air gap 19→yoke 5→air gear knob 21→armature plate 11-+horizontal bar 12.

Also, from the armature plate 10 to the air gap 20→
Yoke 1 → Air gap 22 → Armature plate 11
- Also serves as a horizontal bar 12.

Therefore, the magnetic fluxes x, yK cause the armature 9 to move along the axis 25175 to the right in FIG.

If the direction of the current flowing through the coil 23 is reversed, the armature 9 will move to the left in FIG. .

Generally, such a polarized electromagnetic device is used to drive an externally housed spring load (not shown). The state of alignment between the magnetic attraction force and the spring load by the polarized electromagnet device shown in FIG. 1 is shown in FIG. 2. In FIG. 2, curve A shows the attractive force characteristics of the coil 23 in the rated excitation state, and curve B shows the attraction force characteristics of the coil 23 in the rated excitation state.
Curve C shows the attractive force characteristics in the excited excited state of the coil 23, and the curve C shows the attractive force characteristics in the open excitation state of the coil 23.
The curved line indicates the attractive force characteristics of the coil 23 in the non-excited state. Also, the song @E indicates a spring load.

Further, in FIG. 2, a line Ll-J at the left end indicates the position where the air gap 20.21 closes, and a line L2 at the right end indicates the position where the air gap 19.22 closes.

As is clear from FIG. 2, when the coil 23 is not energized, it is stable in the air gap 20.21i closed state,
Feel the coil 23! When the IJ voltage is applied, the air gap 19.22 shifts to a closed state. If this spring load is biased toward a part of the movement of the armature 9 as shown in Fig. 2, it is not easy to match the magnetic attraction force with the spring member in the polarized electromagnet device shown in Fig. 1. . For example, at points a and 2 shown in FIG. 2, problems may arise where the armature 9 is stopped midway due to the spring load, or the armature 9 has insufficient holding force and its vibration resistance and 1-impulse characteristics are poor. be.

Purpose An object of the present invention is to solve the above-mentioned technical problems and to provide a polar electromagnet device that moves the armature so that it does not stop midway due to the spring load.

Embodiment FIG. 3 shows a basic structural diagram of an embodiment of the present invention. The U-shaped first lever 30 made of a magnetic material has a left side piece 31, a right side piece 32, and a left side piece 31, a right side piece 32, and a left side piece 31. A horizontal piece 33 is loaded. The second yoke i4 is the left and right side piece 3 of the first yoke 30.
It has a length shorter than 1.32 mm and faces the horizontal piece 33.

The right outer surface of the second yoke 34 is directed toward the polarization 35. The permanent magnet 36 is interposed between the first yoke 30 and the second yoke 34, and its magnetization axis direction is perpendicular. The first yoke 30, the second yoke 34, and the permanent magnet 36 are arranged one above the other as one block. The armature 37 is of a horizontal transition type and consists of a horizontal bar 38 and an armature grate 39'. The armature plate 39Fi has its inner and outer supination surfaces as polarized surfaces 40 and 41.

The armature surface 40 of this armature plate 39 is the second yoke 3
The armature surface 41 of the armature plate 39 faces the armature surface 42 of the right side piece 3-2 of the first yoke 30.
to confront. There is an air gap 43 of 1'6J between the armature surface 35 and the armature surface 40, and there is a 44-minute gap between the armature surface 41 and the armature surface 42.The coil 45 has an armature. 37 horizontal bodies 3B are in parallel.

, the magnetic flux of the permanent magnet 36 is shown by a solid line X, and the magnetic flux 1- of the coil 45 is shown by a broken line Y. The magnetic flux X of the permanent magnet 36 flows as follows.

N pole of permanent magnet 36 - horizontal piece 33 of first yoke 30 - right side 32 of first yoke 30 - air gear 44 -> armature plate 39 -> air gap 43 - second yoke 3
4-Permanent magnet; 36 S poles.

Also, the N pole - horizontal piece 33 - left piece 31 - air gap 46 - horizontal support 38 -> armature plate 39 -> air gap 43 -> second yoke 34 -> s pole.

When a current 1 is passed through the coil 45 in the direction of the arrow, the coil 45
The magnetic flux Y flows as follows.

Coil 45 - horizontal #38 of armature 37 - air gap 46 -> first yoke 30 -> air gap 44 - armature plate 39 - horizontal body 38. In addition, the horizontal piece 33
The permanent magnet 36-%2 yoke 34-air gear/V-tube 43->armature plate 39-horizontal rod 38'.

Therefore, when observing the air gaps 43 and 44, the directions of the magnetic fluxes X and Y of the permanent magnet 36 and the coil 45 are opposite to each other in the air gap 43, and
4, they are in the same direction.

Therefore, the magnetic fluxes x and y of the first yoke 30, the second yoke 34, and the armature 37 are superimposed in the same direction, and an attractive force acts on them, and in the opposite direction, they cancel each other out and a repulsive force acts on them. In the figure, the armature 37 moves horizontally in the direction indicated by the arrow W, and the armature plate 39 of the armature 37 and the right side piece 32 of the first yoke 30 attract each other.

The magnetic flux Y at this time flows as follows.

The horizontal body 38 - the air gap 46 - the first yoke 30 - the bumacha plate 39 - the horizontal salary 38. .

Since the magnetism and resistance of this magnetic circuit are very small, the magnetic attraction force of the armature 37 suddenly increases.

This attracted state is maintained by the magnetic flux of the permanent magnet 36 even if the current flowing through the coil 45 is cut off.

When the armature 37 is moved horizontally to the left in the opposite direction to the above, a current is passed through the coil 45 in the opposite direction to that shown in FIG. 2, causing the magnetic flux Y to act in the opposite direction to that shown in FIG.

The air gaps 43, 44 are reversed to the above, with the air gear young 43 in the same direction and the air gap 44 in the opposite direction, and the armature 37 horizontally moves to the left, which is opposite to the direction indicated by the arrow W. The attracted state is maintained by the magnetic flux of the permanent magnet 36 as described above.

From the following observation, since the magnetomotive flux Y of the coil 45 does not pass through the permanent magnet 36 having a large magnetic resistance, the attractive force of the coil 45 becomes highly sensitive. Moreover, the armature 37 performs independent operation without fixing the coil 45 and the permanent magnet 36, and its mass is minimized.

In general, there are 4iI like this! , type electromagnetic device is utilized to drive an externally housed spring load (not shown). The alignment state between the magnetic attraction force and the spring load by the polarized electromagnet device shown in Fig. 3 is as follows.
It will look like the figure. In FIG. 4, curve F shows the attractive force characteristic of the coil 45 in the rated excitation state, curve G shows the attractive force property of the coil 45 in the moving excitation state, and curve H shows the attractive force characteristic of the coil 45 in the open excitation state. The curve J shows the attractive force characteristic when the coil 45 is in a non-excited state. The curve also shows the spring load. Furthermore, the fourth
In the figure, a line L1 at the left end indicates the position where the air gap 43 closes, and a line L2- at the right end indicates the position where the air gap 44 closes.

As is clear from FIG. 4, in the magnetic state without the coil 45, the air gap 43 is stably closed, and when a voltage is applied to the coil 45, the air gap 44 is closed. If the spring load is biased toward a portion of the movement of the armature 37 as shown in FIG. 4, the armature 37 may stop midway because the attraction force of the armature 37 is greater than the spring load at points l and m, for example. You can migrate without any problems. The magnetic attraction force characteristic of this polarized electromagnet device is such that the magnetic attraction force increases rapidly as the armature 37 moves in the direction of arrow W.

Effects As described above, according to the present invention, one side of the horizontal transfer type armature that separates from the respective armature surfaces of the first yoke and the second yoke is attached to one of the left and right side pieces of the first yoke and the second yoke. By forming the armature plate that faces the armature in a straight line, the magnetic attraction force increases rapidly as the armature moves, and it becomes easy to align even with a biased external spring load.

[Brief explanation of the drawing]

FIG. 1 is a basic structural diagram of a polarized electromagnet device in the prior art, and FIG. 2 is a graph showing a state of alignment with the magnetic attraction force and spring load by the polarized all-electromagnet device shown in FIG. 1.
FIG. 3 is a basic structural diagram of one embodiment of the present invention, and FIG.
3 is a graph showing a state of alignment between magnetic attraction force and spring load by the polarized electromagnet device shown in the figure. 30... First yoke, 31 - Left side piece, 32... Right side piece, 33 Horizontality, 34... Second yoke, 35...
Armature surface, 36... Permanent magnet, 37... Armature, 3
9... Amateur plate, 46... Air gap agent Patent attorney Kei Shikyo Part 1 Figure 3 Procedural amendment document March 10, 1980 To the Commissioner of the Japan Patent Office 1, Patent application for indication of case 1982 -23515 2. Name of the invention Electromagnetic device: 3. Relationship with the person making the amendment Applicant Address Name (583) Matsushita Electric Works Co., Ltd. Representative 4, Agent IT Address: 1-13-38 Nishihonmachi, Nishi-ku, Osaka City Shinkosan Building International' ELEX 0525-5985 I
NTAPT J International FAX GIII & GII (0
6) 538-02476, Detailed Description of the Invention column of the specification to be amended and Drawing 7, Contents of the amendment (1) The first line of page 4 of the specification is corrected as follows. Notes 0 and 11 → Air gaps 19 and 21 → Yoke 5 → S pole of permanent magnet 8 (2) The 17th line of page 5 of the specification is corrected as follows. In the notes and dots, the armature 9 is defeated by the attraction force or spring load of the armature 9, and the armature 9 stops working. The left side 31 and the right side with the inner surface as the polarizing surface (4) The specification tIS page 9, item 20 to page 10, line 1 are corrected as follows. Since the coil 45 has a magnetic path that does not need to pass through the permanent magnet 36, which has a large magnetic resistance, the attractive force of the coil 45 is highly sensitive. (5) Revise Figures 2 to 4 of the drawings as shown in the attached sheet.
Do 1 mi. Figure 2 above

Claims (1)

[Claims] A U-shaped first yoke consisting of left and right pieces whose inner surfaces are contact surfaces and a horizontal piece connecting these left and right pieces, and a horizontal piece with a deflection shorter than between the left and right pieces. At the same time, one side of the left and right outer surfaces is connected @! , a curved second yoke, and a permanent magnet interposed between the horizontal piece of the first yoke and the second yoke with the magnetization axis direction perpendicular to the first yoke, the 542 yoke, and the permanent magnet. The magnets are arranged in one block, and the upper and lower first yokes, S'';
It is a horizontally transition type armature that separates from the 6-contact 4@ surface of the yoke, and one end of this armature is connected to the armature plate facing one of the left and right side pieces of the upper and lower first yoke and the second yoke. An electromagnet device characterized in that an end extends into an air gap formed between the left and right side pieces of the upper and lower first yokes.