WO1990001780A1 - Electro-aimant a noyau mobile - Google Patents

Electro-aimant a noyau mobile Download PDF

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Publication number
WO1990001780A1
WO1990001780A1 PCT/JP1989/000742 JP8900742W WO9001780A1 WO 1990001780 A1 WO1990001780 A1 WO 1990001780A1 JP 8900742 W JP8900742 W JP 8900742W WO 9001780 A1 WO9001780 A1 WO 9001780A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
iron core
fixed iron
fixed
yoke
Prior art date
Application number
PCT/JP1989/000742
Other languages
English (en)
Japanese (ja)
Inventor
Tokio Uetsuhara
Yuichi Ando
Kenji Iio
Kenichiro Kinoshita
Original Assignee
Mitsubishi Mining & Cement Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP19758188A external-priority patent/JPH0246707A/ja
Priority claimed from JP11272888U external-priority patent/JPH0235408U/ja
Priority claimed from JP22635188A external-priority patent/JPH0276206A/ja
Priority claimed from JP28681688A external-priority patent/JPH02133906A/ja
Priority claimed from JP63319631A external-priority patent/JPH02165606A/ja
Priority claimed from JP114989A external-priority patent/JPH02181904A/ja
Priority claimed from JP443489U external-priority patent/JPH0296706U/ja
Application filed by Mitsubishi Mining & Cement Co., Ltd. filed Critical Mitsubishi Mining & Cement Co., Ltd.
Priority to DE68915998T priority Critical patent/DE68915998T2/de
Priority to EP89908518A priority patent/EP0380693B1/fr
Publication of WO1990001780A1 publication Critical patent/WO1990001780A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets

Definitions

  • the present invention also relates to a plunger-type electromagnet used for a solenoid valve or the like for controlling the flow of fluid such as air, water and fuel. Background technology
  • a gap is required between the yoke and the plunger, and the ampere pattern required to excite this gap is large.
  • the latching type has a larger exciting amperage because a permanent magnet with a large magnetic resistance is inserted in series in the magnetic path that is excited by the energization of the coil. Need a turn In other words, the electromagnet becomes larger.
  • the magnetic attraction force in the gap portion acts in a constant direction on the outer circumference of the plunger due to the magnetic flux density in the outer circumference direction of the plunger. It has the drawback of increasing the operating frictional resistance of the jerk.
  • the present invention solves each of the problems as described above when using a plunger-type electromagnet, and aims to achieve high sensitivity, power saving, and size and weight reduction of the electromagnet, and the user side. It is an object to provide a plunger type electromagnet that can meet the needs of the above.
  • the magnetic flux amount is considered to be approximately constant if the amperage of the magnetic path is constant. Therefore, within the range where the magnetic flux density B does not saturate, the smaller the area of the abutting surface between the pole pieces, the greater the attractive force.
  • the magnetic resistance of the magnetic path is inversely proportional to its cross-sectional area.
  • the present invention is composed of the following combinations of means, and aims to reduce the power supply capacity of the electromagnet and the size of the electromagnet, and to reduce the manufacturing cost.
  • the magnetizing direction of a ring-shaped permanent magnet is formed in the thickness direction.
  • the axial length of the plunger is set to the distance between the suction blade and the end face of the yoke facing the suction blade. Are equal to the separation distance between the plunger and the fixed iron core.
  • the magnetic pole surfaces of the plunger and the fixed iron core that are attracted to each other are tapered on the plunger side in a truncated cone shape to form a stepped layer and are stacked on the same axis as the plunger.
  • the fixed iron core side is formed from a multi-step recess that is loosely fitted to each truncated cone of the plunger to engage with the plunger side.
  • the movable pole piece In the electromagnet of (J) (h), the movable pole piece is separated from the fixed pole piece by fitting the fixed pole piece to the fixed pole piece and allowing the movable pole piece to be freely inserted. In most cases, it was equipped with a cylindrical pole piece that fits loosely on the end surface of the movable pole piece.
  • the inner surface of the yoke and one pole face of the plunger face each other in parallel with the moving direction of the plunger, and the other pole face of the plunger is a fixed iron core. It was formed so as to face the magnetic pole surface having a wider cross-sectional area than the cross-sectional area of the vertical direction of the plunger in the direction perpendicular to the moving direction of the plunger.
  • the other magnetic pole surface of the plunger of the electromagnet of (m) (1) and the magnetic pole surface of the fixed iron core facing the magnetic pole surface were formed in a taper-shaped concavo-convex portion so as to fit with each other.
  • the end face of the yoke or the pole face connected to the end face and one pole face of the plunger face each other perpendicularly to the moving direction of the plunger, and the end face of the yoke.
  • the magnetic pole surface connected to the magnetic pole surface or the end surface is formed so as to have a larger cross-sectional area than that of the fixed iron core, and the magnetic pole surface of the fixed iron core and the other magnetic pole surface of the plunger are brass. It was formed so as to face in parallel with the moving direction of the engineer.
  • the permanent magnet is formed in an annular shape, and is arranged around the plunger in the same axial center as the flange, and the magnetizing direction is in the thickness direction of the annulus. Formed.
  • the permanent magnets (q) and (P) are the yokes on the opposite side of the fixed core. Between the pole piece on the end face and the ring-shaped pole piece on the side of the pole piece of the coil, the ring-shaped pole piece being arranged coaxially with the blower and surrounding the blower I wore it.
  • the two electromagnets of ( ⁇ j (q) are brought into contact with the yoke end face of the pole piece on one side and are combined symmetrically to form two common brushes.
  • the diameter is made smaller than that at the center, and at the same time, the fixed iron cores at both ends are provided with holes that allow the diameter parts to be loosely fitted to allow movement. Was unnecessary.
  • the pole piece on the end face of the yoke opposite to the fixed iron core is inserted into the yoke, and is attached to the end opposite to the fixed iron core of the plunger provided through the pole piece.
  • a suction vane that is orthogonal to the plunger axis and inscribes on the inner surface of the yoke, and the plunger length is set so that the plunger sucks to the fixed iron core. If not, the length of the suction vane surface is set to match the yoke end face position, and the permanent magnet (P) is placed between the suction vane plate and the magnetic pole piece.
  • the permanent magnets are arranged between the pole pieces and the coil, and the permanent magnets are placed on the same axis as the plunger between the permanent magnets and the coil.
  • a ring-shaped magnetic pole piece surrounding the jack was placed.
  • the length of the plunger consists of one piece and the one side of the ring-shaped magnetic pole matches the position of the end face of the yoke when the plunger is not attracted to the fixed core.
  • the present invention is constructed on the basis of well-known knowledge, has an excellent action and effect, and makes a great contribution to a wide range of consumer and industrial fields. can do .
  • FIG. 1 to 3 are cross-sectional views of the embodiments of the plunger type electromagnet provided with the suction blade of the present invention
  • FIG. 4 is the suction blade of the present invention and the plunger
  • Fig. 5 is a sectional view of the attachment / detachment surface of the fixed core and the plunger of the present invention
  • Fig. 6 is a sectional view of the embodiment of the bobbin of the present invention.
  • FIG. 7 is a sectional view of a first embodiment of a plunger type electromagnet having an iron core structure according to the present invention
  • FIG. 8 is a diagram showing the iron core attracting magnetic pole area of the electromagnet shown in FIG.
  • FIG. 9 is a cross-sectional view of the second embodiment, FIG.
  • FIG. 9 is a cross-sectional view of the third embodiment of the electromagnet having the iron core structure shown in FIG. 7, and FIG. 10 is a plan view of the present invention.
  • Fig. 11 is a cross-sectional view of the second embodiment of the electromagnet shown in Fig. 10
  • Fig. 2 is a sectional view of the third embodiment in which a permanent magnet is added to the electromagnet shown in Fig. 10
  • Fig. 13 shows the attraction surface structure of the plunger and the fixed core of the present invention.
  • FIG. 16 is a cross-sectional view of an example in which a ring-shaped permanent magnet of the present invention in which is formed in the thickness direction is attached, and Fig. 16 is a cross-sectional view of another example in which the permanent magnet of the present invention is attached, FIG. 7 is a sectional view of an embodiment in which a permanent magnet of the present invention and a suction vane are mounted, and FIG. 18 is a sectional view of another embodiment of the electromagnet shown in FIG. 17 and FIG.
  • FIG. 20 is an explanatory view of a specific example of the present invention
  • FIG. 21 is an electromagnet input and a conventional example of the present invention.
  • Graphs comparing the relationship with the suction force, Figs. 22 to 25, are explanatory views of the cross section of the conventional example. The best way to carry out the Ming
  • Fig. 22 is an explanatory view of a conventional device without a permanent magnet. It has a fixed iron core 12 fixed to the yoke 10 and a plunger that is in contact with the fixed iron core 1 2. 1 4, a fixed core 1 2 and a spring 1 6 for separating the plunger 14 from each other, a fixed iron core 1 2, a plunger 14 and a yoke 1 0.
  • Coil 18 that causes the circuit to be magnetized by energization and resist the urging force of spring 16 to attract plunger 1 4 to fixed iron core 12 and coil winding. It consists of a reusable bobbin 20 etc.
  • the figure shows that the coil 18 is not energized and is isolated by the biasing force of the flanger 14 and the fixed core 1 2 force s spring 1 6 Is shown.
  • the plungers 14 are attracted to the fixed iron cores 1 2 against the urging force of the springs 16 and the plungers 14 are attracted. Operate the contact points, valves (not shown), etc. connected to the armor 14.
  • the coil 18 When the coil 18 is de-energized, it returns to the state shown in Fig. 22.
  • FIG. 23 and 25 are explanatory views of an example of a conventional device equipped with a permanent magnet, in which a permanent magnet 2 4 and an annular permanent magnet 2 are provided outside the fixed iron core 1 2. 6 was used together.
  • Fig. 23 shows that the coil 18 is not energized and the plunger 14 and the fixed core 1 2 are isolated by the urging force of the spring 16 and are stable. Indicates the state. In this state, if a predetermined current is applied to the coil 18 so as to induce a magnetomotive force having the same polarity as the magnetomotive force of the permanent magnet 24, the superposition effect of both magnetomotive forces causes a split.
  • the plunger 14 is attracted to the fixed iron core 12 against the urging force of the flange 16 and the contact point, valve (not shown) connected to the plunger 14 and the like. Operate. Furthermore, even if the coil 18 is de-energized in this state, this state is maintained only by the action of the permanent magnet 24. When a predetermined current is applied to the coil 18 so as to induce a magnetomotive force having a polarity opposite to that of the permanent magnet 24, the coil 18 returns to the state shown in Fig. 23, which is the so-called latch. To perform a moving operation.
  • Fig. 24 shows an example of the contact surface between the conventional fixed iron core 12 and the brassiere 14.
  • the upper half is in a state where the plunger 14 and the fixed iron core 12 are separated from each other, and the lower half is in which the plunger 14 is absorbed to the fixed iron core. It shows the status.
  • the solid line is the magnetic field line due to the permanent magnet, and the dotted line is the magnetic field line induced by the coil being energized.
  • the present invention provides a conventional plunger type as described above. This was done to solve the problems of electromagnets and is explained below with reference to the drawings.
  • Figure 1 shows that a suction blade plate 2 2 is provided on the side of the conventional brassierer 14 opposite to the fixed iron core 12 and the coil 18 is not energized.
  • the distances L 2 and L 1 between 2 2 and the yoke 10 and the plunger 1 4 and the fixed iron core 12 are the same.
  • the attractive force F is constant when the excitation ampere is constant, and the magnetic flux amount ⁇ is constant, and the cross-sectional area of the plunger is S.
  • the electromagnetic attraction force in the outer peripheral direction of the plunger is also reduced, which can reduce the axial frictional resistance of the plunger.
  • Figure 2 shows a structure in which the suction vane 2 2 contacts the yoke 10 when the electromagnet is activated, and there is a gap between the plunger 14 and the fixed iron core 1 2.
  • Fig. 3 shows a structure in which the plunger 14 and the fixed iron core 12 are in contact with each other when the electromagnet is operating, and there is a gap between the suction vane plate 2 2 and the yoke 10 ⁇ .
  • the structure as shown in Fig. 2 and Fig. 3 causes the residual magnetism to cause a gap between the plunger and the fixed core.
  • Figure 4 shows the attachment of the suction vanes 2 2 and the plungers 1 4 and the suction vanes 2 2 are screwed onto the plungers 1 4 via the 0-rings 2 1. It is mounted so that it can be slightly rocked. Therefore, when the coil is energized, the plunger and fixed iron
  • the manufacturing cost between the plunger, the fixed iron core and the yoke can be reduced, and the manufacturing cost can be reduced.
  • Fig. 5 shows the shape of the abutting surface of the plunger 14 and the fixed core 12 to improve the sensitivity.
  • the attractive force F will be in the vicinity of the position ( ⁇ X) between the plunger 14 and the fixed core 1 2. It is proportional to the derivative of permeance P with respect to X. Therefore, by configuring the contact surfaces of the plunger 14 and the fixed iron core 12 in the shape shown in Fig. 5, the differential coefficient of the contact surface is increased to increase the suction force. You can set it.
  • Fig. 24 shows the conventional example, the suction force can be increased with the shape shown in Fig. 5.
  • Fig. 6 shows a case in which a cylindrical body with a single flange 42 made of a magnetic material was fitted and attached to the open end of the bobbin 20 and the cross-sectional area of the magnetic path was increased. The magnetic resistance is reduced to increase the sensitivity of the electromagnet.
  • the reluctance R of the magnetic path is inversely proportional to its cross-sectional area S.
  • Figure 6 (a) is a cross-sectional view
  • Figure 6 (b) is Fig. 6 (a) is a sectional view taken along the line BB
  • Fig. 6 (c) is a sectional view taken along the line C-C of Fig. 6 (a).
  • Fig. 7 shows two pole pieces on the fixed core side, which are obtained by cutting the structure in which the yoke, the fixed core, and the plunger are integrated, by cutting along the plane perpendicular to the plunger axis.
  • the fixed magnetic pole piece and the movable magnetic pole piece are constructed by abutting and combining the respective cut surfaces
  • Fig. 7 (a) is a plan view of the contact surface between the magnetic pole pieces
  • Figure 7 (c) is a cross-sectional view of the electromagnet, and shows the states of the magnetic pole pieces when they are attracted and when they are isolated.
  • the electromagnet shown in Fig. 7 has a fixed magnetic pole piece 30 formed by combining two cylindrical iron cores concentrically and at the same height, and a movable magnetic pole piece 32 formed in the same shape as the contact surface 3 8 is a direct combination, and while the coil 18 and the spring 16 are held between the fixed pole piece 30 and the movable pole piece 32, the coil 18 is fixed to the fixed pole piece 3 ⁇ It is fixed to.
  • This embodiment solves this problem by constructing an electromagnet as described above, and it is possible to eliminate unnecessary air gaps in the magnetic path to reduce the magnetic resistance. Therefore, it is possible to obtain an electromagnet with a small amperage for holding the movable pole piece 3 2 by energization.
  • FIG. 8 shows another embodiment of the movable magnetic pole piece 32 of FIG. Fig. 8 (a) is a plan view of the contact surface of the movable pole piece 40 that contacts the fixed pole piece, and Fig. 8 (b) is the A-A arrow of Fig. 8 (a). It is a sectional view. F c... Adsorption force
  • the relationship is established. That is, if there is no gap in the magnetic path and the magnetic pole pieces are in close contact with each other, the magnetic flux amount ⁇ is considered to be approximately constant if the excitation ampere turn is constant. Therefore, the smaller the area S c is, the larger the adsorption force F c can be set, and the force is divided.
  • the contact surface of the movable magnetic pole piece 40 is reduced, so that the attraction force F is increased and the iron core is reduced in weight.
  • Fig. 9 shows the fixed pole piece 30 of the electromagnet shown in Fig. 7 with the cylindrical pole piece 36 attached, and when the fixed pole piece 30 and the movable pole piece 3 2 are separated.
  • the cylindrical magnetic pole piece 36 is loosely fitted on the end surface of the movable magnetic pole piece 3 2. Therefore, the magnetic reluctance of the magnetic path against the magnetomotive force when the coil is energized is small, and even with a small excitation amplifier, the movable pole piece 3 2 and the fixed pole piece 30 It is possible to exert a sufficiently large suction force between the two.
  • Fig. 10 shows the contact between the movable and fixed magnetic pole faces of the fixed iron core 12 and the plunger 14 and the plunger 14 and the yoke 10 respectively.
  • FIG. 10 (a) shows a state in which the coil 18 is not energized
  • Fig. 10 (b) is a state in which the coil 18 is energized. Shows the state where the cartridge 14 is adsorbed.
  • the plunger 14 is configured to move via the non-magnetic guide 4 4.
  • the inner surface 10a of the yoke 10 and one magnetic pole surface 14a of the plunger 14 face in parallel with the moving direction of the plunger 14 and the plunger 14
  • the other magnetic pole surface 14 b faces the magnetic pole surface 14 c having a larger cross-sectional area than that of the fixed iron core 12 perpendicularly to the moving direction of the plunger 14. Is formed. Due to this formation, the cross-sectional area of the fixed iron core 1 2 is compared with the adsorption cross-sectional area of the magnetic pole surface 14 c and the magnetic pole surface 14 b, and magnetic saturation is reached. You can make it smaller without doing so. As a result, the coil length is shorter than the required ampere-turn, the amount of copper wire used can be reduced, the size and weight of the device can be reduced, the cost can be reduced, and the structure can be simplified. Therefore, yield 111;
  • the magnetic flux density of the iron core is well known, 1.0 ⁇ : L. 2 wb No rrf is acceptable.
  • the cross-sectional areas of the plunger 14 and the fixed core 12 are substantially equal because of their structure. Therefore, the magnetic flux density in the iron core is 0.2 to 0.6 wb nf, which is the same as the magnetic flux density in the operating gap. This is 1 to 5 to 1 to 2 of the magnetic flux density in the core, and it is shown that the cross-sectional area of the core can be reduced to 1 to 5 to 12.
  • the pole face 14a has a large facing area with the pole face 10a if the axial length thereof is increased, and the magnetic flux density at this portion is reduced, resulting in a plan. Since it is possible to correct the gap imbalance between the jacket 14 and the jockey 10, friction with the jockey 10 as it moves. Can be prevented.
  • Fig. 11 shows the second embodiment of the example shown in Fig. 10 and the contact surface between the pole face 14b and the pole face 14c in Fig. 10 is widened. Therefore, a large suction force can be generated.
  • Figure 12 is a third example of the example shown in Figure 1 It is equipped with an annular permanent magnet 50. A large attraction force is generated due to the superposition effect of the magnetic flux of the coil 18 and the magnetic flux of the annular permanent magnet 50 caused by energization.
  • Figure 12 (a) shows the coil 18 not energized and Figure 12 (b) shows the coil 18 energized. ,
  • Fig. 13 shows the movable area between the fixed iron core 12 and the plunger 14 and the movable area between the plunger 14 and the yoke 10 and the facing area of the abutting surface of the fixed magnetic pole surface.
  • the end face magnetic pole face of the yoke 10 or the pole face 1 O b connected to the end face and one pole face 14 d of the plunger 14 are mutually connected. It is formed to face the plunger 14 vertically in the direction of movement.
  • the pole face 10b has a wider cross-sectional area than the cross-sectional area of the fixed iron core 12.
  • the magnetic pole face 12a of the fixed iron core 12 and the magnetic pole face 14e of the plunger 14 are formed so as to face the plunger 14 parallel to the moving direction. Has been.
  • the contact surface shape of the magnetic pole surface 1 O b of the electromagnet and one magnetic pole surface 14 d of the plunger 14 shown in Fig. 13 (a) is
  • the taper-shaped concave and convex parts may be formed so that they fit into each other (see Fig. 11-1).
  • Figure 14 shows the electromagnet of Figure 13 with an annular permanent magnet 50 attached. It is more than due to the superposition effect of the magnetic flux of the coil 18 and the magnetic flux of the annular permanent magnet 5 ⁇ due to energization. Generates a strong suction force.
  • the permanent magnet is not located in the center of the moving direction of the flanger, so the coil is not divided and the permanent magnet is obeyed. Manufacturing cost can be reduced.
  • Fig. 15 shows a permanent magnet 50 with the magnetization direction of the annular permanent magnet 26 used in the conventional electromagnet shown in Fig. 25 improved from the diameter direction to the thickness direction. It was used.
  • the permanent magnet 50 is formed in an annular shape and is arranged so as to surround the plunger on the same axis as the plunger.
  • an annular permanent magnet 50 is provided between the pole piece 52 of the yoke 10 and the annular pole piece 4 8 provided on the side of the pole piece 52 of the coil 18. ing .
  • Fig. 16 shows the electromagnet shown in Fig. 15 in which the pole pieces 5 2 on the end face of the yoke 10 are brought into contact with each other to form a bilaterally symmetrical combination.
  • the plunger is configured as a common unit, and both ends of the plunger 14 shaft are made smaller in diameter than the central part, and at the same time the fixed iron cores 12 at both ends have It is loosely fitted to open a movable hole.
  • the plunger 14 will It is magnetically stable until it is attracted to 1 2 and the two coils 1 8 are energized in the opposite direction and the plunger 1 4 is attracted to the other fixed iron core 1 2. .
  • a magnetically bistable state can be obtained, and thus the spring can be eliminated.
  • Fig. 17 shows an embodiment in which an annular permanent magnet 50 and a suction vane 2 2 are installed.
  • the pole piece 52 on the end face of the yoke 10 is inserted into the yoke and
  • the length of the plunger 14 is such that when the plunger 14 is not adsorbed to the fixed iron core 12, the suction vane 2 2 surface matches the end position of the yoke 10
  • an annular permanent magnet 50 is provided between the attraction blade plate 22 and the magnetic pole) 52.
  • Fig. 18 shows a second embodiment in which an annular permanent magnet 50 and a suction vane 2 2 are installed.
  • the annular permanent magnet 50 is provided between the pole piece 52 and the coil 18 and
  • An annular magnetic pole piece 4 8 is attached between the annular permanent magnet 50 and the coil 18.
  • Fig. 19 shows an embodiment in which an annular permanent magnet 50 is provided on the outer side of the suction vane 2 2 and a circular permanent magnet 5 0 and an annular pole piece are provided on the surface of the suction vane 2 2. 5 4 is attached, and the length of plunger 14 is such that when plunger 14 is not attracted to fixed core 1 2, annular pole piece 5 4 surface is yoke 1 0 It has a length that matches the end face position.
  • Fig. 15, Fig. 17, Fig. 18 and Fig. In each of the figures, the upper half shows the state where the plunger 14 and the fixed iron core 12 are separated from each other, and the lower half shows that the plunger 14 and the fixed iron core 12 adsorb. It shows the state.
  • Fig. 20 is a concrete example of the present invention, in which the suction surface of the fixed core 12 and the plunger 14 was improved with the installation of the suction vane 2 2.
  • Fig. 20 (a) is a partial sectional view
  • Fig. 20 (b) is a plan view
  • Fig. 20 (c) is a sectional view of the plunger 14 and Fig. 20 (d). Is a sectional view of the fixed core 1 2.
  • the unit of dimensions is mm. In this example, the stroke length of the plunger 14 is 2.5 mm.
  • Fig. 1 shows the input of the electromagnet for the embodiment of the present invention shown in Fig. 20 and the conventional example with the same dimensions as Fig. 20 (without the suction blade plate and without improving the adsorption surface). It is a graph comparing the relationship between the suction force and the suction force. According to the present invention, as shown in Fig. 21, it can be seen that a larger suction force can be obtained with a smaller input power as compared with the conventional example.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

Une plaque à ailettes d'attraction est disposée sur le noyau mobile d'un électro-aimant pour améliorer la forme du noyau mobile et la forme du noyau fixe, ou un cylindre pourvu d'un rebord unique et composé d'un matériau magnétique est monté sur l'extrémité dans le sens de l'axe de l'armature de la bobine de champ. Cet agencement permet d'accroître le taux de change de perméance d'une trajectoire magnétique lors de l'attraction, ainsi que la sensibilité de l'électro-aimant. La force de rétention d'attraction est régulée en ajustant la superficie de la zone de contact entre le noyau fixe et le noyau mobile. On donne à un aimant permanent une forme toroïdale et la direction de magnétisation est formée dans le sens de l'épaisseur de la forme toroïdale. Cet agencement permet de simplifier la magnétisation de l'aimant permanent et de réduire le nombre de composants. On peut produire de la sorte en grande série un électro-aimant léger et peu encombrant.
PCT/JP1989/000742 1988-08-08 1989-07-25 Electro-aimant a noyau mobile WO1990001780A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE68915998T DE68915998T2 (de) 1988-08-08 1989-07-25 Kolbenartiger elektromagnet.
EP89908518A EP0380693B1 (fr) 1988-08-08 1989-07-25 Electro-aimant a noyau mobile

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
JP63/197581 1988-08-08
JP19758188A JPH0246707A (ja) 1988-08-08 1988-08-08 電磁石
JP11272888U JPH0235408U (fr) 1988-08-30 1988-08-30
JP63/112728U 1988-08-30
JP63/226351 1988-09-12
JP22635188A JPH0276206A (ja) 1988-09-12 1988-09-12 プランジャー型電磁石鉄心
JP63/286816 1988-11-15
JP28681688A JPH02133906A (ja) 1988-11-15 1988-11-15 プランジャー型電磁石
JP63/319631 1988-12-20
JP63319631A JPH02165606A (ja) 1988-12-20 1988-12-20 プランジャー型電磁石
JP1/1149 1989-01-09
JP114989A JPH02181904A (ja) 1989-01-09 1989-01-09 電磁石鉄心
JP1/4434U 1989-01-20
JP443489U JPH0296706U (fr) 1989-01-20 1989-01-20

Publications (1)

Publication Number Publication Date
WO1990001780A1 true WO1990001780A1 (fr) 1990-02-22

Family

ID=27563124

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1989/000742 WO1990001780A1 (fr) 1988-08-08 1989-07-25 Electro-aimant a noyau mobile

Country Status (3)

Country Link
EP (1) EP0380693B1 (fr)
DE (1) DE68915998T2 (fr)
WO (1) WO1990001780A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002289430A (ja) * 2001-01-18 2002-10-04 Hitachi Ltd 電磁石およびそれを用いた開閉装置の操作機構

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396716B (de) * 1992-04-07 1993-11-25 Avl Verbrennungskraft Messtech Elektromagnetische betätigungsvorrichtung, insbesonders für ein ventil
DE4332960A1 (de) * 1993-03-31 1994-10-06 Schrott Harald Bistabiler Elektromagnet, insbesondere Magnetventil
US5497135A (en) * 1993-03-31 1996-03-05 Harald Schrott Bistable electromagnet, particularly an electromagnetic valve
EP0644561B1 (fr) 1993-09-16 1997-11-26 Binder Magnete GmbH Electro-aimant de commande à courant continu
DE4334031C2 (de) * 1993-10-06 1998-02-12 Kuhnke Gmbh Kg H Verfahren zum Betrieb eines bistabilen Hubmagneten und Hubmagnet zur Durchführung des Verfahrens
DE19608729C1 (de) * 1996-03-06 1997-07-03 Siemens Ag Elektromagnetisches Schaltgerät
BR9812231B1 (pt) * 1997-09-18 2011-08-23 atuador eletromagnético.
NL1007072C2 (nl) * 1997-09-18 1999-03-22 Holec Holland Nv Elektromagnetische actuator.
FR2792109B1 (fr) * 1999-04-12 2001-06-01 Schneider Electric Sa Electroaimant a circuit magnetique simplifie
FR2792108B1 (fr) 1999-04-12 2001-05-04 Schneider Electric Sa Electroaimant a courant continu
US20010030589A1 (en) * 2000-02-29 2001-10-18 Dahlgren Derek A. Three position solenoid
CN1234135C (zh) 2001-01-18 2005-12-28 株式会社日立制作所 电磁铁和使用该电磁铁的开关装置的操作机构
FR2896615A1 (fr) 2006-01-20 2007-07-27 Areva T & D Sa Actionneur magnetique a aimant permanent a volume reduit
DE102010048808A1 (de) 2010-10-20 2012-04-26 Eto Magnetic Gmbh Elektromagnetische Stellvorrichtung
DE102011003169A1 (de) * 2011-01-26 2012-07-26 Continental Teves Ag & Co. Ohg Magnetventil
CN104051123B (zh) * 2014-06-09 2016-03-23 常熟开关制造有限公司(原常熟开关厂） 电磁铁结构
JP2017108612A (ja) * 2015-11-09 2017-06-15 フスコ オートモーティブ ホールディングス エル・エル・シーＨＵＳＣＯ Ａｕｔｏｍｏｔｉｖｅ Ｈｏｌｄｉｎｇｓ ＬＬＣ 電磁アクチュエータ用のシステムおよび方法
JP2017169433A (ja) 2016-03-17 2017-09-21 フスコ オートモーティブ ホールディングス エル・エル・シーＨＵＳＣＯ Ａｕｔｏｍｏｔｉｖｅ Ｈｏｌｄｉｎｇｓ ＬＬＣ 電磁アクチュエータのためのシステムおよび方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841207Y1 (fr) * 1970-09-29 1973-12-03
JPS4941239U (fr) * 1972-07-15 1974-04-11
JPS57138113A (en) * 1981-02-20 1982-08-26 Futaba Denjiki Kk Core for solenoid, etc.
JPS5929003U (ja) * 1982-08-16 1984-02-23 星電器製造株式会社 自己保持形プツシユプルソレノイド
JPS5930289Y2 (ja) * 1980-11-13 1984-08-29 焼結金属工業株式会社 電磁弁用ソレノイド
JPS59177904A (ja) * 1983-03-28 1984-10-08 Matsushita Electric Works Ltd ソレノイド
DE3318034A1 (de) * 1983-05-18 1984-11-22 Walter Dipl.-Ing. 4030 Ratingen Krome Elektrischer schub- oder zugmagnet
JPS6127140Y2 (fr) * 1981-11-12 1986-08-13

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223802A (en) * 1963-06-14 1965-12-14 Schulz Tool & Mfg Co Solenoid having a two-piece armature
US4016965A (en) * 1975-08-19 1977-04-12 Ncr Corporation Matrix print head and solenoid driver
JPH0134326Y2 (fr) * 1981-04-22 1989-10-19
JPS5889804A (ja) * 1981-11-24 1983-05-28 Matsushita Electric Ind Co Ltd 自己保持型ソレノイド
US4470030A (en) * 1983-05-18 1984-09-04 Ledex, Inc. Trip solenoid

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841207Y1 (fr) * 1970-09-29 1973-12-03
JPS4941239U (fr) * 1972-07-15 1974-04-11
JPS5930289Y2 (ja) * 1980-11-13 1984-08-29 焼結金属工業株式会社 電磁弁用ソレノイド
JPS57138113A (en) * 1981-02-20 1982-08-26 Futaba Denjiki Kk Core for solenoid, etc.
JPS6127140Y2 (fr) * 1981-11-12 1986-08-13
JPS5929003U (ja) * 1982-08-16 1984-02-23 星電器製造株式会社 自己保持形プツシユプルソレノイド
JPS59177904A (ja) * 1983-03-28 1984-10-08 Matsushita Electric Works Ltd ソレノイド
DE3318034A1 (de) * 1983-05-18 1984-11-22 Walter Dipl.-Ing. 4030 Ratingen Krome Elektrischer schub- oder zugmagnet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0380693A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002289430A (ja) * 2001-01-18 2002-10-04 Hitachi Ltd 電磁石およびそれを用いた開閉装置の操作機構

Also Published As

Publication number Publication date
EP0380693A1 (fr) 1990-08-08
DE68915998T2 (de) 1994-12-15
DE68915998D1 (de) 1994-07-14
EP0380693A4 (en) 1991-01-16
EP0380693B1 (fr) 1994-06-08

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