JPS59148304A - Electromagnet device - Google Patents

Abstract

PURPOSE:To avoid inconvenience such as the attractive force of an armature yields to the external spring load so that the armature stops at an intermediate position by a method wherein armature plates are provided and at the same time a supplement yoke facing one of the plates is provided. CONSTITUTION:The 1st yoke 30 is composed of a left side piece 31 and a right side piece 32 and a level piece 33 and a supplement yoke 34, a permanent magnet 37 and the 2nd yoke 35 are attached to the center part of the level piece 33. Armature plates 40, 41 are provided to both ends of an armature 38 on which a coil 55 is wound and the end part of one (40) of the plates faces the supplement yoke 34. With this configuration, if a current (i) is applied to the coil 55, the flux Y of the coil and the flux X of the magnet are superposed between the plate 40 and the 2nd yoke 35 and between the 1st yoke 30 and the plate 41 and the armature 38 is attracted to W direction. When the plate 40 touches the supplement yoke 34 due to this shifting, the flux of the coil all flows through the plate 40, the supplement yoke 34, the 1st yoke 30 and the plate 41 so that the attractive force of the armature 38 grows rapidly.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention provides a permanent magnet in a magnetic circuit composed of an armature and a yoke, and superimposes the magnetomotive force of the magnetic Ie [C coil of the permanent magnet. The present invention relates to a so-called polarized electromagnet device that transfers .

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 a magnetic material has a left side piece 2 and a right side piece 8 whose inner surfaces are polarized surfaces, and a horizontal piece 4 that connects the left and right side pieces 2.3. The yoke 5 has a length shorter than the left and right pieces 2.3 of the yoke 1, and faces the horizontal piece 4.

The left and right outer surfaces of the yoke 5 serve as armature surfaces 6 and 7.

The eight permanent magnets are interposed between the yokes 1 and 5, and their magnetization axes are perpendicular. Yoke 1, yoke 5, and permanent magnet 8 are arranged one above the other as one block. It has 9 armatures and is a horizontal transfer type, consisting of a horizontal bar 12 and armature plates io, ti. The armature plate 10 has both its inner and outer surfaces as polarized surfaces 18. '14. 11 armature plates, both inner and outer sides of which have contact surfaces 15.
It is set at 16. The armature surface 18 of the armature plate 10 faces the armature surface 6 of the yoke 5, and the armature surface 14 of the armature plate 10 faces the armature surface 17 of the left piece 2 of the yoke l. The armature surface 15 of the armature pull plate 11 faces the armature surface 7 of the yoke 5, and the armature surface 16 of the armature plate ii
faces the armature surface 18 of the yoke 1. There is an air gap 19 between the armature surface 6 and the armature surface 13, and an air gap 20 between the armature surface 14 and the armature surface 17. Further, there is an air gap 21 between the armature surface 7 and the armature surface 15, and an air gap 2 between the armature surface 16 and the armature surface 18.
It has 2. The horizontal rod 12 of the armature 9 passes through the coil 23.

The magnetic flux of the permanent magnet 8 is shown by a solid line X, and the magnetic flux of the coil 28 is shown by a broken line y. The magnetic flux X of the permanent magnet 8 flows as follows.

N pole of permanent magnet 8 → Yoke 1 → Air gaps 20 and 22 → Armature plates 10 and 11 - Yoke 5 -
This becomes the S pole of the permanent magnet 8.

The magnetic flux y of the coil 23 flows as follows.

Coil 23 → horizontal rod 12 → armature plate 10 - air gap 19 → yoke 5 → air gap 21 → armature plate 11 → horizontal bar 12.

Also, from amateur plate 10 to air gatsu 7'20
- Yoke 1 - Air gap 22 - Armature plate 1
1- Also serves as a horizontal bar 12.

Therefore, the armature 9 moves along the axis 2 due to the magnetic flux x+Y.
5 to the right in FIG.

If the direction of the current flowing through the coil 28 is reversed, the armature 9 moves to the left in Figure @1.

Generally, such a polarized electromagnetic device is used to drive an externally attached 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 28 in the rated excitation state, and curve B shows the attraction force characteristics of the coil 28.
Curve C shows the attractive force characteristics when the coil 28 is in the open excitation state, and the curved line shows the attractive force characteristics when the coil 28 is in the non-excited state. Curve E also shows the spring load.

Furthermore, in FIG. 2, the left end line L1 indicates the position where the air gap 20.21 closes, and the right end line L1 indicates the position where the air gap 20.21 closes.
2 indicates the position where the air gap 19.22 is closed.

As is clear from FIG. 2, when the coil 28 is not energized, it remains stable with the air gaps 20 and 21 closed;
When a voltage is applied to the coil 28, the air gap 1
9.22 moves to the closed state. This spring load is the second
In the case where the armature 9 is offset to a certain extent as shown in the figure, in the polarized electromagnet device of FIG. 1, it is not easy to match the magnetic attraction force and the barb load. For example, point a shown in Figure 2
At this point, there arises a problem that the armature 9 succumbs to the spring load and stops midway, or that the holding force of the armature 9 is insufficient, resulting in poor vibration resistance and impact resistance characteristics.

OBJECTIVES An object of the present invention is to solve the above-mentioned technical problem and provide a polarized electromagnet device having an armature that does not stop midway due to a spring load.

Embodiment FIG. 8 shows a basic structural diagram of an embodiment of the present invention. The U-shaped first yoke 30 made of a magnetic material has a left side piece 31 and a right side piece 32 whose inner surfaces are polarized surfaces, and a horizontal piece 83 connecting these left and right side pieces 81 and 82. An auxiliary yoke 34 whose left end is vertically bent is fixed to the inner surface of the horizontal piece 33 of the first yoke 30. The second yoke 35 has a length shorter than the distance between the left and right pieces 81 and 82 of the @l yoke 30, and faces the horizontal piece 38. This second yoke 35
The left outer surface of is used as an armature surface 36. The permanent magnet 87 is interposed between the first yoke 30 and the auxiliary yoke 34, and its magnetization axis direction is perpendicular. First yoke 80. 2nd yoke 3
5. The auxiliary yoke 84 and the permanent magnet 87 are arranged one above the other as one block. The armature 88 is of a horizontal transition type and consists of a horizontal bar 89 and armature plates 40 and 41.

The armature plate 40 has both its inner and outer surfaces as polarized surfaces 42.
．． It is set at 48. The armature surface 42 of the armature plate 4.0 faces the armature surface 44 of the auxiliary cork 84 and the armature surface 86 of the second yoke 85, and the armature surface 48 of the armature plate 40 faces the Arming surface 4 of left piece 81
Confront 5. There is an air gap 46 between the armature surface 48 and the armature surface 45, an air gap 47 between the armature surface 42 and the armature surface 44, and an air gap 47 between the armature surface 42 and the armature surface 36. There is an air gap 48 between them.

The armature plate 41 has both its inner and outer surfaces as polarized surfaces 49.
; 50. The armature surface 49 of the armature plate 41 faces the armature surface 51 of the second yoke 35, and the armature surface 50 of the armature plate 41 faces the right side 8 of the first yoke 80.
It faces the armature surface 52 of No. 2. There is an air gap 53 between the armature surface 4a and the armature surface 51, and an air gap 54 between the armature surface 50 and the armature surface 52. coil 55
The horizontal rod 39 of the armature 88 passes through it.

The magnetic flux of the permanent magnet 37 is shown by a solid line X, and the magnetic flux of the coil 55 is shown by a broken line Y. The magnetic flux X of the permanent magnet 37 flows as follows.

N pole of permanent magnet 37 - auxiliary yoke 84 - first yoke 80
horizontal piece 88 → left side 31 and right side 82 of yoke 30 → air gaps 46 and 54 → armature plates 40 and 41 → air gaps 48 and 53-
Second yoke 85 - becomes the S pole of the permanent magnet 87.

Also, the N pole of the permanent magnet 87 - the auxiliary yoke 84 - the air gap 47 -> the armature plate 40 -> the air gap 4
8→second yoke 85→also serves as the S pole of the Hiku magnet 87.

When a current i in the direction of the arrow is passed through the coil 55, the coil 55
The magnetic flux Y flows as follows.

Coil 56 - Horizontal e89 of armature 88 - Armature plate 40 - Air gap 46 - Left piece 81 of first yoke 80 - Horizontal piece 33 of @1 yoke 80 - First yoke 80
right side piece 82 - air gap 54 - armature plate 41 - horizontal bar 89 of armature 88.

Also, from the armature plate 40 to the air gap 48→
The second yoke 85 -> air gap 58 -> armature plate 41 -> horizontal bar 89 as well.

Also, from the armature plate 40 to the air gap 47-
Auxiliary yoke 84 → horizontal piece ss of first yoke 80 = first
The right side piece 82 of the yoke 30 -> the air gap 54 - the armature plate 41 - the horizontal 4% 89.

Here, air gaps 46.47', '48.58.
54'i, the directions of the magnetic fluxes X and Y of the permanent magnet 87 and the coil 55 are opposite to each other at the air gap 46°47.58, and are in the same direction at the air cap 48.54.

Therefore, between the armature plate 40 and the @2 yoke 85, and the mi yoke 30 and the armature plate 41, the magnetic fluxes X and Y are superimposed in the same direction and an attractive force acts, but in the opposite direction they cancel each other out. Since the repulsive force acts, the armature 88 moves horizontally in the direction indicated by the arrow W in FIG. 8, and the armature plate 41 of the armature 38 and the right side piece 82 of the first yoke 30 attract each other.

At this time, as the armature plate 41 of the armature 88 approaches the right side piece 82 of the first yoke 30, the magnetic flux Y from the coil 55 flows as the main flow as follows.

Coil 55 → horizontal bar 89 of armature 38 → armature plate 40 → auxiliary yoke 84 → horizontal piece 8 of first yoke 30
8-@1 Right side piece of yoke 80-82-armature plate 4
1→Horizontal bar 39.

Since the magnetic resistance of the magnetic circuit formed in this way is very small, the magnetic attraction force of the Amachi Y38 increases rapidly.

This attracted state is maintained by the magnetic flux of the permanent magnet 87 even if the current flowing through the coil 55 is cut off.

When moving the armature 38 horizontally to the left, contrary to the above, a current in the opposite direction to the above is passed through the coil 55, and the magnetic flux Y
is applied in the opposite manner to that shown in Fig. 3.

The attracted state is maintained by the magnetic flux of the permanent magnet 87 as described above.

Generally, such a polarized electromagnetic device is used to drive an externally housed spring load (not shown). The matching state between the magnetic attraction force and the repelling load due to the polarized electromagnet device shown in FIG. 8 is summed as shown in FIG. 4.

In FIG. 4, curve F shows the attraction force characteristic of the coil 55 in the rated excitation state, curve IG shows the attraction force characteristic of the coil 55 in the moving excitation state, and curve H shows the attraction force characteristic of the coil 55 in the open excitation state. Curve J shows the attractive force characteristics of the coil 55 in the non-excited state. Also, the song @ shows the spring load. Furthermore, in FIG. 4, the leftmost line L1 indicates the position where the air gap 46 closes,
The rightmost line L2 indicates the position where the air gap 54 closes.

As is clear from FIG. 4, when the coil 55 is not energized, the air gap 46 is closed and the coil 55 is stable.
5, the air gap 54 is closed. If the spring load is biased toward a portion of the movement of the armature 88 as shown in FIG.
Even at point m, the suction force of the armature 38 is greater than the spring load, so the armature 38 can move without stopping midway. The magnetic attraction force characteristic of this polarized electromagnet device is such that the magnetic attraction force increases rapidly as the armature 88 moves in the direction of arrow W.

FIG. 5 is a basic structural diagram of another embodiment of the present invention. The U-shaped first yoke 60 made of a magnetic material has a left side piece 61 and a right side piece 62 whose inner surfaces are polarized surfaces, and a horizontal piece 68 that connects these left and right side pieces 61 and 62. An auxiliary yoke 64 is fixed to the inner surface of the horizontal piece 68 of the first yoke 6θ.

The second yoke 65 is the left and right side pieces 61 of the Wr11 yoke 60.
．． 62, and faces the horizontal piece 68. The left outer surface of this @2 yoke 65 is an armature surface 66. The permanent magnet 67 is interposed between the first yoke 6o and the auxiliary yoke 64, and its magnetization axis direction is perpendicular. First yoke 60
．． No. 2: 1-165, auxiliary yoke 64 and permanent magnet 6
7 is set as 110 pieces and arranged one above the other. The armature 68 is of a horizontal transition type, with a horizontal rod 69 and an armature plate 7.
It consists of 0°71. Both upper and lower ends of the armature plate 7o are bent in a direction parallel to the horizontal piece 63 of the first yoke 60. Further, the armature plate 70 has both its inner and outer surfaces serving as polarized surfaces 72 and 78, and its bent tip surface serving as an inoculation surface 72a. The armature surface 72a of the armature plate 70 faces the armature surface 74 of the auxiliary yoke 64, and the armature surface 72 faces the armature surface 66 of the @2 yoke 65.

Also, the armature surface 78 u of the armature plate 70 and the armature surface 78 facing the armature surface 75 of the left piece 61 of the first yoke 60
and the armature surface 75 have an air gap 76, between the armature surface 72 and the armature surface 66 there is an air gap 78, and between the armature surface 72a and the armature surface 74 there is an air gap 76. gap 7
8a is included.

The armature plate 71 has both its inner and outer surfaces as polarized surfaces 79.
．． It is set at 80. The inoculation surface 79 of this first gusset plate 71 faces the armature surface 81 of the second yoke 65, and the armature surface 81 faces the armature surface 81 of the second yoke 65.
1 faces the right side of the first yoke 60 and the armature surface 72 of 62. There is an air gap 83 between the armature surface 79 and the armature surface 81, and an air gap 84 between the armature surface 80 and the armature surface 82. A horizontal rod 69 of the armature 68 passes through the coil 85.

The magnetic flux of the permanent magnet 67 is shown by a real l1iIx, and the magnetic flux of the coil 85 is shown by a broken line Y. The magnetic flux X of the permanent magnet 67 flows as follows.

N pole of permanent magnet 67 - auxiliary yoke 64 - first yoke 60
horizontal piece 63 -> left piece 61 and right piece 62 of first yoke 60 - air gap 70 and 71 - air gap 78 and 8B - @2 yoke 65 - S of ice permanent stone 67
Become the pole.

Also, the N pole of the permanent magnet 67 -> the auxiliary yoke 64 - the air gap 78a -> the armature plate 70 -> the air gap 78 - the second yoke 65 - the S pole of the permanent magnet 67.

When a current i in the direction of the arrow is passed through the coil 85, the coil 85
The magnetic flux Y is current as follows.

Coil 85 - horizontal rod 69 of armature 68 - armature plate 70 → air gap 76 → left piece 61 of first yoke 60 → horizontal piece 63 of first yoke 60 → first yoke 60
The right side piece 62 -> air gap 84 - armature plate 71 -> horizontal bar 69 of armature 68.

Also, from the armature plate 70 to the air gear knob 78 =
The second yoke 65 → air gap 83 → armature plate 71 → horizontal bar 69 also becomes.

Also, from the eye chart plate 70 to the air gap 78a
- Auxiliary yoke 64 → horizontal piece 68 of the first yoke 60 - first
The right side piece 62 of the yoke 60 - the air gap 84 -> the armature plate 71 - also becomes the horizontal bar 69 of the armature 68.

Here, air gap 76.78t78a188.8
4, the magnetic flux X between the permanent magnet 67 and the coil 85
, Y are in opposite directions at air gaps 76.degree. 72a and 8g, and in the same direction at air gaps 78.84.

Therefore, armature plate 71 and @1: i-ri 60
between the right side piece 62 of In FIG.
The right side piece 62 of the yoke 60 is attracted.

At this time, as the armature plate 71 of the armature 68 approaches the right side piece 62 of the @1 yoke 60, the magnetic flux Y from the coil 85 becomes the mainstream and flows as follows.

Coil 85 → horizontal bar 69 of armature 68 → armature plate 70 - auxiliary yoke 64 → horizontal piece 6 of first yoke 60
8-@1 Right side piece of yoke 60-62-armature plate 7
1-Horizontal bar 69.

Since the magnetic resistance of the magnetic circuit formed in this way is very small, the magnetic attraction force of the eye chart 68 suddenly increases.

This attracted state is maintained by the magnetic flux of the permanent magnet 67 even if the current flowing through the coil 85 is cut off.

When moving the armature 68 horizontally to the left, contrary to what is described above, a current in the opposite direction is passed through the coil 85, and the magnetic flux Y is changed to @8.
Make it work in the opposite direction as shown in the diagram.

At this time, the permanent magnet 67 is used to maintain the adsorption state in the same manner as described above.
It is carried out with a magnetic flux of 4.

In the case of this embodiment as well, the matching state with an external mechanical load (not shown) has the same characteristics as in FIG. 4 described above.

Effects According to the present invention, by providing an auxiliary yoke that faces one side of the armature plate of the eye chart, the magnetic attraction force increases rapidly as the armature moves, so that it is effective even against an unbalanced external spring load. Matching becomes possible easily.

[Brief explanation of the drawing]

Fig. 1 is a basic structural diagram of a polarized electromagnet device in the prior art, Fig. 2 is a graph showing the matching state with the magnetic attraction force and spring load by the polarized electromagnet device shown in Fig. 1, and Fig. 8 4 is a basic structural diagram of an embodiment of the present invention, and FIG. 4 is a diagram showing the alignment of the magnetic attraction force and spring load by the polarized electromagnet device shown in FIG.・
・Horizontal piece, 84°64...Auxiliary yoke, 85.65・
...2nd yoke, 86.51, 66.81... Armature surface, 87.67... Permanent magnet, 88.68... Armature, 40, 41, 70, 71... Armature plate substitute Person: Patent Attorney Kei Nishi, Part 1, Figure 5, Procedural Amendment 1, Indication of the Case, Patent Application 1982-23516 2, Name of the Invention, Electromagnetic Device 3, Person Making the Amendment, Relationship with the Case, Applicant's Address, Name (583) ) Matsushita Electric Works Co., Ltd. Representative 4, Agent Address: 13-38 Nishimoto ll1r1-chome, Nishi-ku, Osaka City
Emerging building country equipment EX 0525-5985 INT
APT J International FAX GIIl&G11 (06)
53B-0247 Telephone (06) 538-0263 (Representative) Voluntary amendment ＼2 Neenie 6, Detailed description of the invention column of the specification subject to amendment and 1 Drawing 7, Contents of amendment (1) Specification, page 1, No. Correct line 16 as shown below. Arrange the recording magnets as one block above and below the coil frame. (2) Correct the details on page 2, line 6 as shown below. Arrange the recording magnets as one block above and below the fill frame. (3) Correct the 10th line of page 3 of the specification as follows. 5 and the permanent magnet 8 as one block above and below the coil frame. (4) Page 6, line 10 of the specification should be corrected as follows. At this point, the suction force acting on the armature 9 is overcome by the spring load.
Do E. For the record 37, the question (6) between No. 23-235 and the auxiliary yoke 34, line 11 on page 13 of the specification, is corrected as follows. It is written down. For the permanent magnet 67, the second yoke 65 and the supplementary specification (7), page 14, line 14, are corrected as follows. 1, the armature surface 80 is on the right side of the first yoke 60 (8) The 17th line on page 14 of the specification is corrected as follows. The opening between the pole surface 80 and the armature surface 72 is the air gap 8. (9) Correct the lines 5 to 6 of Pls, page 15 of book #lI, as shown below. Note 61 and right side piece 62 → air gap 76 and 78
→ Amateur plates 70 and 71 → Air gap 7
8 and 83 → 2nd Yo (10) Figures 12, m3, and 4 of the drawings are corrected as shown in the attached sheet. Figure 2 Amount of armature movement

Claims (1)

[Claims] [11] A U-shaped first yoke consisting of left and right side pieces whose inner surfaces are polarized surfaces and a horizontal piece connecting these left and right side pieces; A second yoke faces the horizontal piece and has its left and right outer surfaces in contact with each other, and an auxiliary yoke whose one end is bent at right angles to the inner side of the first yoke is fixed to the inner side of the horizontal piece of the first yoke. However, a permanent magnet is interposed between the auxiliary yoke and the second yoke with the magnetization axis direction perpendicular, and the first yoke, the second yoke, the auxiliary yoke, and the permanent magnet are arranged one above the other as one rotor. Further, the armature is of a horizontal transition type that separates from the respective armature surfaces of the upper and lower first yoke and second yoke,
A Kono armature is an electromagnetic device characterized by having armature plates facing left and right pieces. +23 An auxiliary yoke shorter than the horizontal piece is fixed to the inner surface of the horizontal piece of the first yoke, and a permanent magnet is interposed between the auxiliary yoke and the second yoke with the magnetization axis direction perpendicular. The first yoke, the second yoke, the auxiliary yoke, and the permanent magnet are arranged one above the other as one block, and the atcha is a horizontal transition type in which the upper and lower first yokes and second yokes are separated from each other. ,
The electromagnet device according to claim 1, characterized in that there are two armature plate plates facing the left and right side pieces of the armature, and one of the two armature plates is bent vertically at the top and bottom.