JP3483959B2 - Magnet movable linear actuator and pump - Google Patents

Magnet movable linear actuator and pump

Info

Publication number
JP3483959B2
JP3483959B2 JP27572494A JP27572494A JP3483959B2 JP 3483959 B2 JP3483959 B2 JP 3483959B2 JP 27572494 A JP27572494 A JP 27572494A JP 27572494 A JP27572494 A JP 27572494A JP 3483959 B2 JP3483959 B2 JP 3483959B2
Authority
JP
Japan
Prior art keywords
magnet
soft magnetic
movable body
body
magnet movable
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP27572494A
Other languages
Japanese (ja)
Other versions
JPH08116658A (en
Inventor
貴俊 大山
康之 平林
重男 斉藤
Original Assignee
Tdk株式会社
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
Application filed by Tdk株式会社 filed Critical Tdk株式会社
Priority to JP27572494A priority Critical patent/JP3483959B2/en
Publication of JPH08116658A publication Critical patent/JPH08116658A/en
Application granted granted Critical
Publication of JP3483959B2 publication Critical patent/JP3483959B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device, an electronic device,
Electric energy is transmitted by electromagnetic action in machine tools, etc.
Reciprocating motion of a movable magnet that converts it into return motion energy, etc.
Equipment, vibrator, fluid pump, compressor
Magnet movable linear actuator that can be used for applications such as
And a pump. [0002] Conventionally, as a reciprocating device of a movable magnet type,
Is disclosed in Japanese Patent Application Laid-Open No. 6-38486, and is shown in FIG.
There is a movable magnet type linear actuator. In the prior art shown in FIG. 15, 1 is a soft magnetic material.
A cylindrical yoke, and a triple yoke inside the cylindrical yoke 1
The coils 2A, 2B, and 2C are arranged, and the magnet movable body 11 is
The guide cylinder 10 for slidably guiding is constructed.
It is fixed to the cylindrical yoke 1 with an insulating member such as an edge resin.
You. The magnet movable body 11 has two columnar permanent members arranged in the same pole opposition.
The magnets 5A and 5B and the permanent magnets 5A and 5B
A cylindrical intermediate soft magnetic body 6 to be attached
is there. The three coils 2A, 2B and 2C are magnet movable
The magnet movable body 1 is wound so as to go around the outer peripheral side of the body 11.
1, the left end of the permanent magnet 5A, the permanent magnets 5A and 5B
From the same pole opposing end and the rightmost pole of the permanent magnet 5B.
They are arranged so as to interlink with the bundle. these
The coils 2A, 2B and 2C are permanent magnets when thrust is generated.
Current flows in different directions between the magnetic poles of 5A and 5B.
(The boundary between magnetic poles is between magnetic poles.
If it is, it is not always necessary to be at the magnetic pole intermediate position. ). So
And the positions of the coils 2A, 2B, 2C and the magnet movable body 11
The positional relationship is set at most of the movable positions of the magnet movable body 11.
And the current flowing through each coil across the permanent magnet poles
Are set to be opposite to each other. In addition, permanent
Thrust is applied to the outer end surfaces of the magnets 5A and 5B as necessary.
The pins 7 and the like for transmitting the signals are provided as shown by phantom lines in FIG.
May be. [0004] Here, in the above conventional example, a magnet movable body is used.
The thrust generated at 11 is basically the left hand of Fleming
This is equivalent to the thrust given based on the law.
Lemming's left-hand rule applies to coils,
Here, since the coil is fixed, the coil is
A thrust is generated as a reaction to the applied force. ). Accordingly
Therefore, what contributes to the thrust is the permanent magnet
The vertical component of the magnetic flux of the magnets 5A, 5B (permanent magnets 5A, 5B
(A component orthogonal to the axis direction). Incidentally, the structure of the magnet movable body 11 is shown in FIG.
As shown in 5 above, two permanent magnets 5A and 5B
An intermediate soft magnetic body 6 is arranged between two permanent magnets 5A and 5B.
By this, the surface magnetic flux density at the middle soft magnetic material position is
Ingredients can be larger than without intermediate soft magnetic material
I know that. In addition, each coil 2A, 2B, 2C
When a cylindrical yoke 1 of soft magnetic material is provided on the outer peripheral side of
Further reduces the vertical component of the surface magnetic flux density of the magnet movable body 11
It is possible to increase. As described above, the two permanent magnets 5A and 5B
And the middle soft magnetic material 6 is set between the permanent magnets.
The movable magnet 11 is based on Fleming's left-hand rule.
Perpendicular to the longitudinal direction of the magnet movable body 11 that can contribute to thrust.
The magnetic flux component can be increased, and the triple coils 2A, 2B,
Since 2C effectively links with the magnetic flux of all poles of the permanent magnet,
A magnetic field of opposite polarity is alternately applied to the three coils 2A, 2B, 2C.
Large thrust by passing current in the direction in which it occurs
Can occur. Reverse the current in each coil
For example, the direction of the thrust of the magnet movable body 11 is also reversed. AC current
Vibration that repeats the vibration periodically
Work as [0007] As described above, the magnet
Occurs on the movable magnet of a movable linear actuator
Is basically based on Fleming's left-hand rule.
Is equivalent to the thrust given.
The vertical component of the magnetic flux of the permanent magnet interlinking with the coil
It is desirable that there be many (components orthogonal to the axial direction of the permanent magnet)
However, in the structure of the conventional example of FIG.
The axial displacement amount and thrust (g) of the magnet movable body 11 shown in FIG.
f), the center of the stroke of the magnet movable body 11
(Zero displacement), the maximum thrust is reached,
It can be seen that the thrust decreases as the number increases. This feature
The ability to provide an intermediate soft magnetic material between permanent magnets,
A soft magnetic yoke on the outer circumference of the
The same can be said by increasing the vertical component of the magnetic flux. The measurement of the curve (a) in FIG.
2.5mm, 3mm long between rare earth permanent magnets 5A and 5B
A magnet movable body 11 having a soft magnetic body 6 having a length of 1 mm
In the magnet movable linear actuator used, three
A current of 40 mA flows through the coils 2A, 2B and 2C of
The intermediate point of the stone movable body 11 is located at the intermediate point of the center coil 2B.
Is performed with the displacement amount set to zero (however,
The effect of the cylindrical yoke 1 was neglected. ). As described above, the stroke end of the magnet movable body
Since the thrust in the vicinity is small, a magnet movable linear actuator
The load on the eta, that is, the load on the magnet movable body 11 is large.
If it becomes harder, the stroke becomes smaller and the load becomes larger.
If the size changes, the stroke also changes. Further, based on the structure of the conventional example shown in FIG.
When configuring a magnet, a piston connected to a movable magnet
When reciprocating the diaphragm, the piston or diaphragm
The distance that the magnet is pushed toward the stroke end of the magnet
The more pistons and diaphragms try to return
Repulsion increases. That is, the displacement amount of the magnet movable body
Is larger, the repulsive force becomes stronger. Therefore,
As shown in the figure, the thrust of the movable magnet
Is small enough to withstand the repulsion
Pump efficiency, it is difficult to improve pump efficiency.
Was. The present invention has been made in view of the above points, and has
Strengthen the thrust near the stroke end to accompany load fluctuations
Suppress the fluctuation of the stroke of the magnet movable body, and use and purpose
Movable magnet that can have a thrust curve tailored to
Aiming to provide linear actuators and pumps
Target. Other objects and novel features of the present invention will be described later.
This will be clarified in the embodiment. [0013] To achieve the above object,
The magnet movable linear actuator of the present invention has the same polarity
Intermediate soft magnet between at least two permanent magnets facing each other
The body is provided to form a movable magnet, and the mutual positional relationship is constant
Inside the at least three coils regulated by the magnet
A movable body provided movably, and the at least three coils
At least one end or both ends of the magnet movable body
The fixed soft magnetic body is fixedly arranged at a position where
At least three coils must be connected to each permanent magnet when thrust is generated.
So that currents flow in different directions across the magnetic poles of the stone
The configuration is connected. Further, the magnet movable type pump of the present invention has the same polarity.
Intermediate soft magnet between at least two permanent magnets facing each other
The body is provided to form a movable magnet, and the mutual positional relationship is constant
Inside the at least three coils regulated by the magnet
A movable body provided movably, and the at least three coils
At least one end or both ends of the magnet movable body
The fixed soft magnetic body is fixedly arranged at a position where
At least three coils must be connected to each permanent magnet when thrust is generated.
Make sure that currents flow in different directions across the magnetic poles of the stone
Connected to the at least three coils,
Provide reciprocating drive for casing chamber
And the reciprocating drive is connected to the magnet movable body.
And Further, the magnet movable linear actuator
And at least three coils of the
A fixed soft magnetic body may be fixedly disposed between the coils. Further, the above-mentioned magnet movable linear actuator
Motor and pump, said at least three coils
Formed integrally with or separate from the fixed-side soft magnetic body on the outer peripheral side of
And a magnetized direction of the permanent magnet.
A magnetic circuit to increase the magnetic flux component in the direction perpendicular to
You may comprise. Also, the magnet movable linear actuator
In the motor and the pump, at both ends in the axial direction of the magnet movable body
An end soft magnetic body is provided on the outer end surface of the permanent magnet located
May be. The movable magnet type linear actuator is
And the magnet movable body is provided on one or both sides of the magnet movable body.
Repulsive force against the spring or the movable magnet
A returning permanent magnet that is generated may be provided. In the above magnet movable type pump, the case
The single chamber forms a cylinder chamber, and the cylinder chamber
A piston as a return drive may be slidably provided. In the above magnet movable type pump,
The reciprocating drive is a flexible diaphragm,
The periphery of the diaphragm is fixed to the casing chamber.
Configuration. According to the present invention, a magnet movable linear actuator of the present invention and
In a pump, at least two counters
An intermediate soft magnetic body is provided between the magnets to form a movable magnet.
And at least three stations whose mutual positional relationship is regulated
The magnet movable body is movably provided inside the coil of
At least one end or both ends of at least three coils
A fixed-side soft magnetic material is fixedly arranged on the side, and the at least three
Between the magnetic poles of each permanent magnet when thrust is generated.
Configurations where current flows in different directions at the boundary
And This basic operating principle is based on the at least three
Of the coil and the magnetic flux generated by each magnetic pole of the movable magnet
Magnetic flux perpendicular to the axis of the movable magnet
Fleming left hand between minute and current flowing through each coil
Drives the movable magnet with thrust based on the law of
By reversing the current of each coil, the thrust of the movable magnet
The direction is also reversed, and when an alternating current is applied,
Perform a reciprocating motion that repeats vibration. The intermediate between the permanent magnets of the same polarity
Since the magnet movable body is constructed by providing a soft magnetic part,
Movable magnet that contributes to thrust based on Lemming's left-hand rule
The magnetic flux component perpendicular to the body axis direction (permanent magnet magnetization direction)
Can be large enough. [0023] In addition, a small number of the at least three coils is used.
At least one fixed side soft magnetic material is provided at one end or both ends
Therefore, when the movable magnet moves to the stroke end,
When approaching the fixed side soft magnetic body, the permanent magnet is
Detent force (non-excitation) between the stone and the fixed soft magnetic material
(Suction force) works, and the fleming near the stroke end
Thrust is strengthened to compensate for the drop in thrust based on the left hand rule.
ing. Further, when the magnet movable body reciprocates, the magnet
Even if one end of the movable body passes through the fixed soft magnetic body,
Detent force of the soft magnetic material on the fixed side so that the pulled end is pulled back
Works in the opposite direction to the moving direction of the magnet
Without providing a control member, the stroke of the magnet
It is also possible to reciprocate with control. Thus, the thrust near the stroke end
Has become stronger, and the
The load on the tutor, that is, the load on the magnet
Can reduce the decrease in stroke when
Fluctuations in the stroke of the magnet
Can be suppressed. Therefore, small size, small current and large
A movable magnet type linear actuator can be realized. Also, for the at least three coils,
Reciprocating drive for casing chambers provided in a fixed positional relationship
Body and the reciprocating drive body is attached to the magnet movable body.
In the case of a movable magnet type pump with a linked structure,
The distance that is pushed toward the stroke end of the
And repulsion that increases with the displacement of the reciprocating drive
Detent force acting in the direction of movement of the magnet movable body against the force
Reduce the stroke of the movable magnet and reciprocating drive
Prevents a short stroke and ensures a sufficient stroke.
Fluctuation in pump efficiency due to load fluctuation can be suppressed.
You. Also, it is possible to directly reciprocate electromagnetically with AC voltage.
Therefore, a mechanical return mechanism such as a spring is not required, and the mechanism can be simplified.
And the bias in the direction perpendicular to the direction of the reciprocating motion of the magnet
The magnet movable body can be operated smoothly without generating
You. Therefore, magnets that can be driven efficiently with small size and small current
A dynamic pump can be realized. The movable magnet type linear actuator;
In a pump, a coil of said at least three coils
When the fixed side soft magnetic material is fixedly arranged between
Can increase the detent force acting on the magnet
Further thrust increase near the stroke end of the body
Can be. Further, the magnet movable linear actuator
And at least three coils of the
Formed integrally or separately with the fixed side soft magnetic body on the outer peripheral side
Provided a soft magnetic yoke, in the direction of magnetization of the permanent magnet.
Configure a magnetic circuit to increase the magnetic flux component in the vertical direction
When the yoke is provided, each permanent magnet
The magnetic resistance of the magnetic circuit from the N pole to the S pole decreases,
The total magnetic flux generated from the permanent magnet of the movable magnet increases.
Fleming by passing a current through the coil
The thrust given based on the left hand rule of
Wear. Furthermore, the magnet movable linear actuator
In the motor and pump, the permanent magnet is axially magnetized.
And the permanent magnets located at both axial ends of the magnet movable body.
When an end soft magnetic material is provided on the outer end surface of the stone, the magnet
From the magnetic poles on the outer end face of the permanent magnet located at both axial ends of the
The emitted magnetic flux is not easily bent in the vertical direction due to the presence of the end magnetic material.
Of the magnetic flux density outside the permanent magnet for reasons such as
(A component orthogonal to the axial direction of the permanent magnet). You
In other words, it contributes to thrust based on Fleming's left-hand rule.
The magnetic flux component perpendicular to the axial direction of the movable magnet
The current by passing current through the coil.
High thrust can be generated. Also, the magnet movable linear actuator
Mass and non-excitation state of the magnet
Natural vibration determined by the detent force of the fixed side soft magnetic material
The number of AC currents supplied to at least three coils
Matching wave numbers enables highly efficient resonance motion
You. The magnet movable linear actuator is
And the magnet movable body is provided on one or both sides of the magnet movable body.
Repulsive force against the spring or the movable magnet
When a return permanent magnet is provided, the magnet
Elastic force of the spring or permanent magnet for return
It is returned to the middle position by the repulsion of the stone. Therefore, the magnet movable body
Is provided on the stroke end by reciprocating motion
To prevent impact on permanent magnets,
Cracking and chipping of the magnet are prevented, and collision
The generation of shooting noise can be prevented, and vibration during reciprocating motion of the magnet
Generation of motion and sound can be reduced. In addition, magnet movable
The detent force acting in the body's direction of travel is sufficient,
The elastic force or return of the spring near the stroke end of the stone movable body
The impact of thrust reduction due to the repulsion of permanent magnets
No. Further, the magnet can be mounted on both sides of the magnet movable body.
A spring that pushes back the moving body or a repulsive force against the magnet movable body
When a permanent magnet for return that generates
Body mass, detent of fixed side soft magnetic material in non-excited state
Force or the repulsive force of the spring or the returning permanent magnet.
Supply the whole natural frequency and at least three coils
Higher efficiency by adjusting the frequency of AC current
Resonating motion is possible. Further, in the magnet movable type pump,
The casing chamber forms a cylinder chamber.
When the piston as the reciprocating drive is slidably provided
The displacement of the piston toward the stroke end increases
In the direction of movement of the magnet
Working detent force opposes and reduces piston stroke
Prevents a short stroke and ensures a sufficient stroke.
Fluctuation in pump efficiency due to load fluctuation can be suppressed.
You. In the above-mentioned magnet movable type pump,
The reciprocating drive is a flexible diaphragm,
The periphery of the diaphragm is fixed to the casing chamber.
When the diaphragm has the maximum elastic force,
When the movable magnet moves to the maximum stroke end
The detent force acting in the direction of travel of the magnet
Sufficient thrust to reduce the stroke of the diaphragm.
Prevents a short stroke and ensures a sufficient stroke.
Fluctuation in pump efficiency due to load fluctuation can be suppressed.
You. Hereinafter, a movable magnet type linear actuator according to the present invention will be described.
An embodiment of a heater and a pump will be described with reference to the drawings. FIGS. 1 and 2 show a first embodiment of the present invention.
3 shows a movable magnet type linear actuator. In these figures
1 is a cylindrical yoke as a soft magnetic yoke.
The mutual positional relationship is constant inside the cylindrical yoke 1.
With three coils 2A, 2B, 2C regulated
A bobbin 4 made of an edge resin or the like, and an annular shape as a fixed side soft magnetic material
(Perforated disk) Soft magnetic bodies 8A and 8D are arranged and fixed
ing. The bobbin 4 slidably moves the magnet movable body 3.
It constitutes a guide cylinder inside. The magnet movable body 3 is provided on the inner peripheral side of the bobbin 4.
It is slidably provided and has the same pole opposition
And two columnar rare earth permanent magnets 5A, 5B
Cylinder-shaped intermediate portion soft magnet fixed between permanent magnets 5A and 5B
And their permanent magnets 5A, 5B and intermediate
The soft magnetic portions 6 are integrated with each other by an adhesive or the like. Previous
The permanent magnets 5A and 5B are magnetized in the axial direction.
Has an N pole and the other end has an S pole. In the case of the magnet movable body 3, the magnet movable body 3
Uses rare earth permanent magnets as permanent magnets 5A and 5B
A strong magnetic pole is formed, and a magnet movable body
3 is an intermediate point between the two permanent magnets 5A and 5B facing each other at the same pole.
Since it is constituted by providing the soft magnetic part 6, the magnet
Vertical component of magnetic flux density at the intermediate position of moving body 3 (permanent magnet
Component that is orthogonal to the axial direction)
Flux component perpendicular to the longitudinal direction of 3 (permanent magnet magnetization direction)
Is large enough. Each of the coils 2A, 2B, 2C is a magnet
It is formed of an insulating resin or the like so as to surround the periphery of the moving body 3.
The magnet can be wound around the bobbin 4
Effective linkage with the magnetic flux generated by each magnetic pole of moving body 3
ing. The bobbin 4 has an outer diameter of the inner diameter of the cylindrical yoke 1.
And the inside diameter is slightly larger than the outside diameter of the magnet movable body 3
It is formed in a flanged cylindrical shape. In addition, this bobbin 4
The three coils 2A, 2B, and 2C are mutually connected by a flange.
Insulated and integrated at desired intervals, each coil
Need not be provided with a separate bobbin. The annular soft magnetism
The bodies 8A and 8D have outer diameters and inner diameters of the bobbin 4 respectively.
And have the same diameter. And on both end surfaces of bobbin 4
In the state where the annular soft magnetic bodies 8A and 8D are provided,
Are fitted and fixed in the cylindrical yoke 1. Bobbin
4. Contact between the annular soft magnetic bodies 8A, 8D and the cylindrical yoke 1
The surface portions are desirably fixed to each other with an adhesive or the like. this
The bobbin 4 and the annular soft magnetic bodies 8A and 8D are integrated.
The magnet movable body 3 so that it can slide in the axial direction
A guide cylinder for inserting the guide cylinder
The inside diameter of the body is slightly larger than the outside diameter of the magnet
The circumference is a circumferential surface. The three coils 2A, 2B, 2
C is the distance between the magnetic poles of the permanent magnets 5A and 5B when thrust is generated.
Are connected so that currents flow in different directions
You. That is, the center coil 2B is connected to the middle soft magnetic body 6
And the ends including the N poles of the permanent magnets 5A and 5B.
Coils 2A and 2C include S poles of permanent magnets 5A and 5B
Each end can be surrounded,
Of the current flowing through the coil 2B at the center
2A and 2C are opposite to each other (each of FIG. 1).
(See N, S attached to coil). In addition, the magnet movable body 3
Pins for transmitting thrust to the outside if necessary
7 and the like are provided like the imaginary lines in FIG. For pagers
When used as a vibrator, etc., the pin 7 is unnecessary.
You. Here, the operation of the first embodiment will be described.
I will tell. First, a triple coil is used to obtain the polarity shown in FIG.
For generating magnetic fields of opposite polarities alternately in the channels 2A, 2B and 2C.
The current. Perpendicular to the longitudinal direction of the magnet movable body 3
Between the magnetic flux component and the current flowing through each coil 2A, 2B, 2C
Thrust F1 based on Fleming's left hand rule is obtained in between
The magnet movable body 3 is moved rightward in FIG. 1 by the thrust F1.
Move. This thrust F1 is used as a permanent magnet of the magnet movable body 3.
By using rare earth permanent magnets, it can be made strong
it can. Right end face of permanent magnet 5B of magnet movable body 3 (polarity S)
Approaches the annular soft magnetic body 8D, the right end of the permanent magnet 5B
Force between the magnetic pole of the surface and the annular soft magnetic material 8D
(Non-excitation attraction force) F2 works and the magnet movable body 3 remains as it is
Is sucked in the moving direction (right direction). And each coil
Invert the current of 2A, 2B, 2C,
When power is supplied in the opposite direction, the magnet movable body 3 moves to the left in FIG.
Move in the direction. Similarly to the operation in the right direction,
The left end face (polarity S) of the permanent magnet 5A is formed into the annular soft magnetic body 8A.
When approaching, the magnetic pole on the left end face of the permanent magnet 5A and the annular soft magnetism
The detent force acts between the movable body 8A and the magnet movable body 3
It is sucked to the left as it is. Again, the polarity shown in FIG.
When the coils 2A, 2B and 2C are energized as shown in FIG.
The direction of the thrust of the movable body 3 is also reversed, and the magnet movable body 3
Move right. Thus, the magnet movable body 3 is reciprocated.
Can be operated, and when an alternating current is applied,
It works as a vibrator that repeats the vibration periodically. In the first embodiment, the triple coils 2A,
Toroidal soft magnetic bodies 8A and 8D are provided at both ends of 2B and 2C.
Because the magnet movable body 3 is
The magnet moves to one side by thrust F1 based on the law
When the end of the magnet movable body 3 approaches the annular soft magnetic body,
Detent force (non-excitation attraction force) between annular soft magnetic material
F2 further works, and the magnet movable body 3 is attracted in the moving direction.
Is done. Detent by the annular soft magnetic bodies 8A and 8D
The force F2 is such that the outer end surface of the magnet movable body 3 is an annular soft magnetic body.
8A and 8D until it is located at the center of the thickness.
Acts in the same direction as the thrust F1, and the outer end face of the magnet movable body 3
Is located at the center of the thickness of the annular soft magnetic bodies 8A and 8D.
Detent force F2 becomes zero and passes through this position
And the detent force F2 are in the opposite direction (the magnet movable body 3 is
4). The curve (b) in FIG. 16 shows the case of the first embodiment.
The difference between the axial displacement of the magnet movable body 3 and the detent force (gf)
In the non-excited state, that is, the triple coil 2A,
When no current flows through 2B and 2C, the displacement is zero.
Move the magnet movable body 3 in the direction away from the point (rightward).
(However, the diameter is 2.5 mm and the length is 3 m
1mm long soft magnet between the rare earth permanent magnets 5A and 5B
The magnet movable body 3 having the body 6 disposed thereon was used). In FIG.
According to the curve (b), the annular soft magnetic bodies 8A and 8D were provided.
The one end of the movable magnet 3 is annular.
It increases as it approaches the soft magnetic bodies 8A and 8D,
One end of the magnet movable body 3 is eventually turned into an annular soft magnetic body 8.
A, shows a curve that becomes zero when located at the center of the 8D thickness
And its peak is near the stroke end of the magnet movable body 3.
You can see that it is located beside. The curve (c) in FIG. 16 is for the case of the first embodiment.
The relationship between the axial displacement of the magnet movable body 3 and the thrust (gf)
Move the magnet away from the zero displacement point (rightward)
Shows when the body 3 moves. The condition of the magnet movable body 3 is shown in FIG.
6 is the same as the case of the curve (b), and the three coils 2
A current of 40 mA flows through A, 2B, and 2C, and the current shown in FIG.
Measure the thrust generated at the same power consumption as in the example.
Was. From the curve (c) in FIG.
The thrust based on the left hand rule of the
The detent force due to the annular soft magnetic bodies 8A and 8D
Thrust near the stroke end of the movable magnet 3
You can see that it is working. However, the annular soft magnetic material 8
By providing A, 8D, this also works as a yoke,
The magnetic circuit of the magnetic circuit from the north pole to the south pole of the permanent magnets 5A and 5B
Magnetic flux perpendicular to the longitudinal direction of the movable magnet 3 due to reduced air resistance
Since the components are large, the annular soft magnetic bodies 8A, 8A
More inference based on Fleming's left-hand rule than without D
The power has also increased slightly, and the curve (c) has changed to the curve (b)
It is slightly higher than the sum of (b). Note that in FIG.
Indicates one (rightward) thrust, while the other (leftward)
Shows the same relationship. According to the first embodiment, the following effects are obtained.
Fruit can be obtained. (1) Both of the three coils 2A, 2B and 2C
Annular soft magnetic bodies 8A and 8D are fixedly provided on the end side.
Therefore, when the movable magnet 3 moves to the stroke end,
When approaching the soft magnetic bodies 8A and 8D, the magnet movable body 3
The tent force (non-excitation attraction) works, and there is a problem with the conventional configuration.
To compensate for the drop in thrust near the stroke end
Strengthening the load when the load on the magnet movable body 3 increases
Can be reduced. Therefore, the load
It is possible to suppress the fluctuation of the stroke of the magnet movable body 3 due to the fluctuation.
Can be. (2) Outside the three coils 2A, 2B, 2C
A cylindrical yoke 1 made of a soft magnetic material is provided on the circumferential side.
Rings of soft magnetic material on both ends of continuous coils 2A, 2B, 2C
Since the soft magnetic bodies 8A and 8D are provided, the magnet movable body 3
The magnetic circuit of the magnetic circuit from the north pole to the south pole of the permanent magnets 5A and 5B
The air resistance decreases, and the vertical magnetic flux density of the surface
Minutes increase. Therefore, based on Fleming's left-hand rule,
The thrust given can be increased,
Magnet movable linear actuator that can obtain large thrust
Can be realized. (3) When the magnet movable body 3 reciprocates, the magnet
One end of the movable body 3 passes through the annular soft magnetic bodies 8A and 8D.
The ring-shaped soft magnetic material 8 is pulled back so that its passed end is pulled back.
A, the detent force by 8D is the traveling direction of the magnet movable body 3.
Works oppositely, so the stroke of the magnet
It is possible to reciprocate while regulating
Occurs when the magnet movable body 3 contacts the regulating member
Noise and vibration can be suppressed. (4) Mass and annular soft magnetism of the magnet movable body 3
Magnets determined from the detent force etc. caused by the bodies 8A and 8D
The natural frequency of the movable linear actuator and the triple
Frequency of the alternating current supplied to the coils 2A, 2B, 2C.
By doing so, a highly efficient resonance movement becomes possible. this
If the vibrator (for pager or massage machine
Etc.). (5) The annular soft magnetic bodies 8A and 8D are provided with flanges.
A special bobbin shape may be provided on both end faces of the bobbin 4.
Is not required, and the triple coils 2A, 2B and 2C are bobbins.
What is necessary is just to wind each between the 4 collars. FIG. 3 shows a movable magnet according to a second embodiment of the present invention.
1 shows a type linear actuator. In the second embodiment,
Inside the cylindrical yoke 1, three coils 2A, 2B, 2
Split bobbins 4A, 4B, 4C with C and fixed side soft magnetism
Ring-shaped soft magnetic bodies 8A, 8B, 8C, 8D
Placed and fixed, divided bobbin 4A, 4B, 4C and annular soft
Combine and integrate magnetic materials 8A, 8B, 8C, 8D
The movable magnet 3 is slidably provided inside the guide cylinder.
Have been. Each of the coils 2A, 2B, 2C is an insulating tree.
Wound around divided bobbins 4A, 4B, 4C made of oil etc.
The wire is wound in an annular shape, and the magnet is movable.
Effectively interlink with the magnetic flux generated by each magnetic pole of the body 3
I have. The divided bobbins 4A, 4B and 4C have cylindrical outer diameters.
The inner diameter is the same as the inner diameter of the yoke 1, and the inner diameter is the outer diameter of the magnet movable body 3.
It is formed in a slightly larger annular shape. The ring
The soft magnetic bodies 8A, 8B, 8C and 8D have outer and inner diameters.
Each of the divided bobbins 4A, 4B, 4C is formed to have the same diameter as the divided bobbins.
Have been. Then, a ring is formed on the outer end surface of the left bobbin 4A.
Soft magnetic material 8A is annular soft magnetic between bobbins 4A and 4B.
The body 8B has an annular soft magnetic body 8C between the bobbins 4B and 4C.
Is provided on the outer end surface of the right bobbin 4C with an annular soft magnetic body 8D.
Are fitted into the cylindrical yoke 1 so that
Fixed. Split bobbins 4A, 4B, 4C, annular
The soft magnetic bodies 8A, 8B, 8C, 8D and the cylindrical yoke 1
The contact surfaces are desirably fixed to each other with an adhesive or the like. This
Split bobbins 4A, 4B, 4C and annular soft magnetic material
8A, 8B, 8C, 8D are integrated,
Restrict the mutual positional relationship between coils 2A, 2B and 2C
To guide the movable magnet 3 slidably.
And the inner diameter of this guide cylinder is
Slightly larger than the outer diameter of the magnet movable body 3 and the inner circumference is a circumferential surface
It has become. Other configurations are the same as those of the first embodiment.
The same or corresponding parts have the same reference characters allotted. In the configuration of the second embodiment, the following
It works. First, the triples are used so that the polarities shown in FIG.
Generate magnetic fields of opposite polarity alternately in the coils 2A, 2B, 2C
When the current is applied in the direction shown in FIG.
3 by the thrust F1 based on Lemming's left hand rule
Move in the direction. By moving the magnet movable body 3 to the right, permanent magnet
The right end face (S pole) of the stone 5B is permanently attached to the annular soft magnetic body 8D.
The left end face of the magnet 5B and the right end face (N pole) of the permanent magnet 5A are circular.
The left end face (S pole) of the permanent magnet 5A is attached to the annular soft magnetic body 8C.
When approaching the annular soft magnetic body 8B, the magnet moves.
Between the body 3 and the annular soft magnetic bodies 8B, 8C, 8D.
The tent force (non-excitation attraction) F3 works, and the magnet movable body 3
It is sucked in the same moving direction (right direction). And
The current of each of the coils 2A, 2B, 2C is reversed and shown in the figure.
When energized so that the polarity is opposite, the magnet movable body 3
3 moves to the left. That is, the left end of the permanent magnet 5A
The surface (S-pole) is on the ring-shaped soft magnetic material 8A and the right end of the permanent magnet 5A.
The surface and the left end surface (N pole) of the permanent magnet 5B are annular soft magnetic materials
8B, the right end face (S pole) of the permanent magnet 5B has an annular soft magnetism
When approaching the body 8C, the magnet movable body 3 and each ring
Force acts between the soft magnetic particles 8A, 8B and 8C
At this time, the magnet movable body 3 is sucked to the left as it is. Again
If the current of each coil 2A, 2B, 2C is reversed,
The direction of the thrust of the stone movable body 3 is also reversed, and the magnet movable body 3 reciprocates.
When an exercise is performed and an alternating current is applied,
It works as a vibrator that repeats movement. In the second embodiment, the triple coils 2A,
In addition to the annular soft magnetic bodies 8A and 8D on both sides of 2B and 2C,
Between the coils 2A and 2B and between the coils 2B and 2C, respectively
Since the annular soft magnetic bodies 8B and 8C are provided, the first
Magnet movable body 3 and annular soft magnetic bodies 8A, 8 in the embodiment
Detent force greater than F2 between D and detent force
The force F3 acts on the magnet movable body 3. Therefore, the magnet movable body 3
Thrust near the stroke end of
Magnet movable linear actuator capable of handling large loads
Data can be realized. In addition, the other operation and effects are the same as those of the first embodiment.
This is the same as the embodiment. FIG. 4 shows a magnet movable according to a third embodiment of the present invention.
1 shows a type linear actuator. In the third embodiment,
Inside the cylindrical yoke 1, three coils 2A, 2B, 2
C with divided bobbins 14A, 14B, 14C and an annular shape
The soft magnetic bodies 18A, 18B, 18C, 18D are arranged and fixed.
Divided bobbins 14A, 14B, 14C and annular soft magnetic
Combined with body 18A, 18B, 18C, 18D
The movable magnet 3 is slidably provided inside the guide cylinder body.
Have been killed. The annular soft magnetic bodies 18A, 18B, 18
C and 18D are divided bobbins each having an outer diameter and an inner diameter
14A, 14B, 14C are formed in the same diameter as
The annular soft magnetic bodies 18A and 18D have an L-shaped cross section in the radial direction.
The intermediate annular soft magnetic bodies 18B and 18C have a radial cross section.
Are formed in a T-shape, and the inner peripheral side is formed wide in the axial direction.
ing. Also, among the divided bobbins 14A, 14B, 14C,
On the circumferential side, each annular soft magnetic material 18A, 18B, 18C, 1
It is formed in a shape that fits with the wide portion of 8D. this
In the case, the adjacent annular soft magnetic bodies 18A, 18B, 18
Divided bobbins 14A, 14B, 14C between each of C and 18D
Are fitted into the cylindrical yoke 1 so that
Fixed. Divided bobbins 14A, 14B, 14C,
Annular soft magnetic bodies 18A, 18B, 18C, 18D and circle
The contact surfaces of the cylindrical yoke 1 are fixed to each other with an adhesive or the like.
Is desirable. These divided bobbins 14A, 14B, 14
C and annular soft magnetic bodies 18A, 18B, 18C, 18D
Is designed so that the magnet movable body 3 can be slid
A guide cylinder for inserting the guide cylinder
The inside diameter of the body is slightly larger than the outside diameter of the magnet
The circumference is a circumferential surface. Other configurations are described above.
Same as the first embodiment, and the same or corresponding parts have the same reference characters.
Is attached. In the configuration of the third embodiment, the following
It works. First, the triples are used so that the polarities shown in FIG.
Generate magnetic fields of opposite polarity alternately in the coils 2A, 2B, 2C
When the current is applied in the direction shown in FIG.
4 by the thrust F1 based on Lemming's left hand rule
Move in the direction. By moving the magnet movable body 3 to the right, permanent magnet
The right end face (S pole) of the stone 5B is fixed to the annular soft magnetic body 18D.
The left end face of the permanent magnet 5B and the right end face (N pole) of the permanent magnet 5A
The left end face of the permanent magnet 5A (S
Poles) approach the annular soft magnetic body 18B, respectively.
The magnet movable body 3 and each of the annular soft magnetic bodies 18B, 18C, 18
A detent force (non-excitation attraction force) F4 works with D,
The magnet movable body 3 is attracted in the moving direction (right direction) as it is.
It is. Then, the current of each coil 2A, 2B, 2C is reversed.
When the power is turned on to reverse the polarity shown,
The stone movable body 3 moves to the left in FIG. That is, permanent
The left end surface (S-pole) of the magnet 5A is attached to the annular soft magnetic body 18A,
The right end face of the permanent magnet 5A and the left end face (N pole) of the permanent magnet 5B
The right end face of the permanent magnet 5B (S
Poles) approach the annular soft magnetic material 18C, respectively.
The magnet movable body 3 and each annular soft magnetic body 18A, 18B, 18
C, the detent force acts, and the magnet movable body 3
It is sucked leftward. Again, each coil 2A, 2B, 2
If the current of C is reversed, the direction of the thrust of the magnet movable body 3 is also reversed.
The magnet movable body 3 performs reciprocating motion and passes an alternating current.
If the vibrator repeats the vibration in a certain cycle,
Work. In the third embodiment, the outer periphery of the magnet movable body 3
Soft magnetic bodies 18A, 18B, 18C, 18D facing
Of the magnet movable body 3
Exerts a detent force on the movable magnet 3 even if the position is small
Stage where the amount of displacement of the magnet movable body 3 is relatively small
However, in addition to thrust based on Fleming's left-hand rule,
Tent power works. Therefore, the stroke end of the magnet movable body 3
In addition to improving the thrust in the vicinity, the thrust of the magnet
And can handle larger loads
A movable magnet type linear actuator can be realized. What
Other functions and effects are the same as those of the first embodiment.
You. FIG. 5 shows a movable magnet according to a fourth embodiment of the present invention.
1 shows a type linear actuator. In this figure, the magnet
The movable body 15 is composed of two columnar rare-earth permanents arranged in the same pole opposition.
The magnets 5A and 5B and the permanent magnets 5A and 5B
A cylindrical intermediate soft magnetic body 6 to be attached and permanent magnets 5A and 5
B-shaped soft magnetic ends fixed to both outer end faces of B
And the permanent magnets 5A, 5B
B, the intermediate soft magnetic body 6 and the end soft magnetic bodies 9A and 9B are in contact with each other.
They are integrated with each other by an adhesive or the like. The permanent magnet 5A,
5B is magnetized in the axial direction, and one end face is an N pole.
The other end face is an S pole. In addition, the end soft magnetic
The thickness of the bodies 9A and 9B is 1/2 to 1 of the intermediate soft magnetic body 6.
It is set to about twice. In the case of the magnet movable body 15,
An intermediate soft magnetic body 6 is provided between the two permanent magnets 5A and 5B.
Especially, the intermediate position of the magnet movable body 15
Component of the magnetic flux density at the position (perpendicular to the axial direction of the permanent magnet)
In the longitudinal direction of the magnet movable body 15
Magnetic flux component perpendicular to (permanent magnet magnetization direction) is large enough
Has become. Further, the outer end faces of the permanent magnets 5A and 5B are
Since the soft magnetic members 9A and 9B are provided, the permanent magnet 5
The magnetic flux that has come out of the magnetic poles on the outer end faces of A and 5B is a soft magnetic material at the end.
Reasons such as easy bending in the vertical direction due to the presence of 9A and 9B
And the vertical component of the magnetic flux density at the outer portions of the permanent magnets 5A and 5B.
(A component orthogonal to the axial direction of the permanent magnet). The other construction is the same as that of the first embodiment.
It is the same, and the same or corresponding parts are denoted by the same reference characters. In the case of the fourth embodiment, the left hand of Fleming
The thrust based on the law of is as shown in the curve (d) of FIG.
The end soft magnetic bodies 9A, 9A,
9B, the vertical component of the magnetic flux density (permanent magnet
Of the soft magnetic material at the end
Thrust is generally higher than the curve (a) showing no
You can see that it is doing. For example, a magnet without a soft magnetic end
Thrust direction of several% to 10% compared to the case of movable body 3
The above is obtained. Therefore, the sum of thrust and detent force
Is as shown by the curve (e).
It is better than the case. However, the magnet movable body 3 of the first embodiment
The same permanent magnets 5A and 5B and the cylindrical intermediate soft magnetic body 6
Use the permanent magnets 5A, 5B with a length on each outer end face.
A disk-shaped soft magnetic material 9A, 9B having a 0.5 mm end is disposed.
And energization of the coils 2A, 2B, 2C
The measurement was performed under the same conditions. According to the fourth embodiment, the magnet movable member 15
Is an intermediate portion between the two permanent magnets 5A and 5B which have the same pole opposition.
A soft magnetic body 6 is provided, and outer ends of permanent magnets 5A and 5B are provided.
The surface is provided with end soft magnetic bodies 9A and 9B.
Can contribute to the thrust based on Fleming's left-hand rule
Magnetic flux component perpendicular to the axial direction (longitudinal direction) of the magnet movable body 15
Can be made sufficiently large. Therefore, the thrust can be increased,
Small size, movable magnet that can obtain more thrust with small current
Type linear actuator can be realized. Other effects
The result is the same as in the first embodiment. FIG. 6 shows a movable magnet according to a fifth embodiment of the present invention.
1 shows a type linear actuator. In this case, the magnet mover
15 is between the two permanent magnets 5A and 5B facing the same pole.
An intermediate soft magnetic body 6 is provided, and the permanent magnets 5A, 5B
The end soft magnetic bodies 9A and 9B are provided on the outer end face.
I have. Other configurations are the same as those of the second embodiment.
And the same or corresponding parts have the same reference characters allotted. Also in the case of the fifth embodiment, the magnet movable body 15
Is an intermediate portion between the two permanent magnets 5A and 5B which have the same pole opposition.
A soft magnetic body 6 is provided, and outer ends of permanent magnets 5A and 5B are provided.
The surface is provided with end soft magnetic bodies 9A and 9B.
Can contribute to the thrust based on Fleming's left-hand rule
Magnetic flux component perpendicular to the axial direction (longitudinal direction) of the magnet movable body 15
Can be made sufficiently large. Therefore, in the case of the second embodiment described above.
It is possible to further increase the thrust. In addition,
Other functions and effects are the same as those of the second embodiment. FIG. 7 shows a movable magnet according to a sixth embodiment of the present invention.
1 shows a type linear actuator. In this case, the magnet mover
15 is between the two permanent magnets 5A and 5B facing the same pole.
An intermediate soft magnetic body 6 is provided, and the permanent magnets 5A, 5B
The end soft magnetic bodies 9A and 9B are provided on the outer end face.
I have. Other configurations are the same as in the third embodiment.
And the same or corresponding parts have the same reference characters allotted. Also in the case of the sixth embodiment, the magnet movable body 15
Is an intermediate portion between the two permanent magnets 5A and 5B which have the same pole opposition.
A soft magnetic body 6 is provided, and outer ends of permanent magnets 5A and 5B are provided.
The surface is provided with end soft magnetic bodies 9A and 9B.
Can contribute to the thrust based on Fleming's left-hand rule
Magnetic flux component perpendicular to the axial direction (longitudinal direction) of the magnet movable body 15
Can be made sufficiently large. Therefore, in the case of the third embodiment described above.
It is possible to further increase the thrust. In addition,
Other functions and effects are the same as those in the third embodiment. FIG. 8 shows a movable magnet according to a seventh embodiment of the present invention.
1 shows a type linear actuator. In this figure, 21
Is a cylindrical yoke made of a soft magnetic material.
Inside the box, a triple co
2A, 2B, 2C and the three coils 2A, 2B,
The annular soft magnetic bodies 8A, 8B, 8 are provided between and at both ends of 2C.
C, 8D are arranged, and these coils 2A, 2D
B, 2C and the annular soft magnetic bodies 8A, 8B, 8C, 8D
Guide cylinder for movably guiding the magnet movable body 23
24 made of insulating material (non-magnetic material) such as insulating resin
It is fixed to the cylindrical yoke 21. This guide cylinder 24
Is slightly larger than the outer diameter of the magnet movable body 23,
The circumference is a circumferential surface. The magnet movable body 23 is composed of two identical poles facing each other.
Perforated cylindrical rare earth permanent magnets 25A, 25B,
Perforated cylindrical intermediate soft magnetic body 2 disposed between permanent magnets
6 and the permanent magnets 25A, 25B.
Through the perforated disc-shaped cushion plates 31A and 31B
The through shaft 27 is inserted, and the engagement groove 32 of the metal through shaft 27 is inserted.
A stopper (retaining ring called metal E-ring) 33 is fitted to
The permanent magnet 25
A, 25B, intermediate soft magnetic body 26 and disk-shaped cushion
Plates 31A and 31B are fixed. The permanent magnet
25A and 25B are magnetized in the axial direction and have one end
The surface is an N pole and the other end is an S pole.
Magnetic or non-magnetic coating layer consisting of metal or resin
Reference numerals 34 are formed. The coating layer
Reference numeral 34 denotes a plating technique such as electroplating and electroless plating, or steaming.
It may be formed using thin film technology such as deposition. Also,
The shaft 27 is made of a non-magnetic or magnetic metal,
31A and 31B are formed of an elastic material such as silicon rubber.
It is a cushioning member and is slightly compressed between the pair of stoppers 33.
It is pinched. As a result, the cushion plates 31A, 31A
B denotes each of the permanent magnets 25A and 25B and the intermediate soft magnetic body 26.
It is possible to prevent the rattling by absorbing the thickness variation of
it can. The permanent magnet 25 is attached to the metal penetrating shaft 27.
A, 25B and the intermediate soft magnetic body 26
An adhesive may be used in combination. The three coils 2A, 2B, 2C are permanent
In different directions across the magnetic poles of the magnets 25A and 25B
The wires are connected so that current flows. That is, the central
Il 2B is composed of an intermediate soft magnetic body 26 and permanent magnets 25A, 25A.
5B encircling the end including the N pole, the coils 2A, 2C on both sides
Are the ends including the south poles of the permanent magnets 25A and 25B, respectively.
It is wound in an annular shape so that it can be surrounded
Of the current flowing through the coil 2B at the center
8A and 2C are opposite to each other (each of FIG. 8).
(See N, S attached to coil). The annular soft magnetic body 8
A, 8B, 8C, and 8D have outer diameters of cylindrical yokes 21.
And the inner diameter is larger than the inner diameter of the guide cylinder 24.
And adjacent coils 2A, 2B, 2C
It is arranged with a short interval between each. The cylindrical yoke 21 and the soft yoke
And a non-magnetic side plate 35 at both ends of the non-magnetic guide cylinder 24.
A, 35B are fitted and fixed, and the side plates 35A, 35B
Cylindrical bearing member 3 of sintered metal, highly slidable resin, etc. in the center
6 are fixedly supported. And each cylindrical shaft
Penetrating through the permanent magnets 25A and 25B on the inner peripheral surface of the receiving member 36;
The integrated through shaft 27 is slidably supported,
One end of the through shaft 27 protrudes outside the bearing member 36.
So that it can be used as an output pin to connect to the load.
Has become. The side plates 35A and 35B are the guide cylinders.
Each having a convex portion 37 fitted to the inner peripheral surface of the body 24.
When the distal end surface of the convex portion 37 moves the magnet movable body 23,
The magnet is movable by contacting the cushion plates 31A and 31B
The movement range of the body 23 is defined (note that
If the distance between the side plates 35A and 35B is made sufficiently large, the protrusion 37
May not come into contact with the cushion plates 31A and 31B.
Wear. ). The bearing member 36 may be non-magnetic or magnetic.
It may be. A movable magnet type linear actuator according to the seventh embodiment
In the heater, as in the first embodiment, the magnet movable body 2
Rare earth permanent magnets as permanent magnets 25A and 25B of 3
The use of stone creates strong magnetic poles, and
The cylindrical yaw of soft magnetic material is provided on the outer peripheral side of the coils 2A, 2B and 2C.
Is provided, so Fleming's left-hand rule
Of the magnet movable body 23 that can contribute to the thrust based on
The magnetic flux component perpendicular to the hand direction) can be increased,
3 coils 2A, 2B, 2 wound in a loop around 3
Apply a current in the direction that generates a magnetic field of opposite polarity to C alternately
Can generate even greater thrust.
Wear. The three coils 2A, 2B, 2C
An annular soft magnetic material 8A, 8 of a soft magnetic material is provided between and at both ends.
Since B, 8C, and 8D are provided, the magnet movable body 23 is
By the thrust based on Fleming's left-hand rule
When it moves and approaches the stroke end, the magnet movable body 2
3 and each of the annular soft magnetic bodies 8A, 8B, 8C and 8D.
Detent force between objects approaching poles (non-excitation attraction)
Works, and the magnet movable body 23 is attracted in the moving direction. The annular soft magnetic bodies 8A, 8B, 8C, 8
The detent force due to D is the permanent magnet 2 of the magnet movable body 23.
One end of 5A, 25B is the thickness of the annular soft magnetic body 8A, 8D
Becomes zero when it is located at the approximate center of
When one end passes through the annular soft magnetic bodies 8A and 8D, the annular
Ends passed by the soft magnetic particles 8A, 8B, 8C and 8D
In the direction opposite to the traveling direction (the magnet movable body 23).
To return to the center of the guide cylinder 24).
Works. In the polarity shown in FIG. 8, the magnet movable body 23 moves rightward.
The direction of movement is
The direction of the thrust of the magnet movable body 23 is also reversed. AC current
Vibrator that repeats the vibration periodically
Work as According to the seventh embodiment, a triple coil
An annular soft magnetic material 8 is provided between each of 2A, 2B and 2C and on both ends.
A, 8B, 8C, and 8D, the magnet movable body 2
When 3 moves to the stroke end, the annular soft magnetic body 8A,
Of 8B, 8C, 8D, the one approaching each magnetic pole and magnet movable
Detent force (non-excitation attraction force) acts between body 23
Good. Therefore, near the stroke end when driving the magnet movable body 23
The thrust on the side is enhanced, and the magnet
Reduction of stroke when load on shaft 27) increases
Can be reduced, and as a result, magnetic
The fluctuation of the stroke of the stone movable body 23 can be suppressed.
You. Also, when the magnet movable body 23 reciprocates, its end is
Even after passing through the annular soft magnetic bodies 8A and 8D, the magnet movable body 2
The magnet can be moved by the detent force that works in the opposite direction to the traveling direction of 3.
The stroke of the body 23 is restricted, and the side plates 35A, 35
Prevents or hits the convex portion 37 of B
When the magnet movable body 23 is
Noise and vibration generated in contact with 7 can be suppressed. Also in the seventh embodiment, the first embodiment
The same operation and effect as shown in the embodiment can be obtained.
The following effects can be obtained. (1) Perforated cylindrical rare earth permanent magnet 25
A, 25B and perforated disk-shaped cushion plates 31A, 31
B, the metal penetrating shaft 27 is inserted therethrough.
A stopper 33 is fitted into the engagement groove 32 and locked, thereby
23, fixing the permanent magnets 25A and 25B,
Integration can be performed reliably, and it is easy to assemble and receive incoming calls
Highly reliable. (2) The penetrating shaft 2 integrated with the magnet movable body 23
7 is slidably supported by the bearing member 36, so that the magnet
The inside of the guide cylinder 24 is always kept without rattling of the moving body 23.
It can be controlled to be concentric with the circumference center, and the permanent magnet 25A,
A holder for integrating 25B on the outer peripheral side of the permanent magnet
There is no need to cover, and the outer peripheral surfaces of the permanent magnets 25A and 25B
The gap between the coils 2A, 2B and 2C can be set to the minimum necessary.
It is effective for improving the thrust. (3) The magnet movable body 23 is
Since the magnet movable body 23 is not in contact with the inner peripheral surface, the magnet movable body 23 is moved in the axial direction.
The magnet movable body 23
Problems such as wear of the guide cylinder 24 and the number of exercises
Life can be extended. (4) Outside positions of the permanent magnets 25A and 25B
Are cushioned cushioning plates with holes, 31A and 3A.
1B, the reciprocating motion of the magnet movable body 23
Therefore, the side plates 3 fixed to both ends of the guide cylinder 24
5A and 35B, the permanent magnet 25
A, 25B impact is suppressed, preventing cracking and chipping of the magnet
As well as preventing the generation of impact noise due to collisions.
The vibration and sound generated by the reciprocating motion of the magnet movable body 23
It can be reduced. Also, cushion the side plates 35A and 35B.
It is necessary to form the convex portions 37 corresponding to the plate 31A, 31B.
Thus, the stopper 33 can be prevented from hitting the bearing member 36.
You. (5) Perforated cylindrical rare earth permanent magnet 25
A, 25B magnetic or non-magnetic coating layer on the entire surface
34, the permanent magnets 25A and 25B are
The permanent magnet is generated by the impact when the magnet movable body 23 is reciprocated.
Prevents stones 25A and 25B from cracking or chipping
Can be In addition, the coating layer 34
Perforated cylindrical rare earth permanent magnets 25A, 25B and perforated circle
Metal penetrating shaft 27 is attached to plate-like cushion plates 31A and 31B.
When the magnet movable body 23 is formed by being inserted, the permanent magnet 25
A and 25B can be prevented from being damaged such as cracks and chips.
Noh. The coating layer 34 is made of the permanent magnet 25
A, if at least provided on the outer peripheral surface of 25B,
The peripheral surface may be omitted. (6) The space between the side plates 35A and 35B is
When the distance is set larger, the reciprocating motion of the magnet movable body 23
Sometimes, the end of the magnet movable body 23 is
A, which works in the opposite direction of travel when passing through 8D
The stroke of the magnet movable body 23 is regulated by the
The magnet movable body 23 contacts the convex portions 37 of the side plates 35A and 35B.
It is possible to prevent ripping, which results in low noise
And vibration can be reduced. FIG. 9 shows an eighth embodiment of the present invention.
1 shows a type linear actuator. In this figure, soft magnetic
Of the cylindrical yoke 21 and the non-magnetic guide cylinder 24
Non-magnetic side plates 35C and 35D are fitted and fixed to both ends.
Between the inner surfaces of the side plates 35C and 35D and the magnet movable body 23 side.
A compression spring 38 is provided between the disc-shaped cushion plates 31A and 31B.
It is arranged. The compression spring 38 moves the magnet movable body 23 inside.
It has the function of pushing back to the intermediate position. Other configurations are
This is the same as the above-described seventh embodiment, and the same or equivalent parts are the same.
One symbol is attached. According to the eighth embodiment, each coil 2A,
2B, 2C, the magnet movable body 2
3 is the elastic force of the left and right compression springs 38 inside the cylindrical yoke 21.
Of the coils 2A, 2B, 2C
The magnet movable body 23 is driven to one side by applying a DC current to the
Can move. Also, if an AC current is applied,
The stone movable body 23 reciprocates and operates as a vibrator.
However, the annular soft magnetic members 8A and 8A described in the seventh embodiment
B, 8C, 8D detent force (If the displacement amount becomes excessive,
The magnet can be actuated in the opposite direction to the traveling direction of the magnet movable body 23).
In addition to regulating the stroke of the moving body 23, the magnet movable body 23
When it is displaced to some extent, it is intermediate by the elastic force of the compression spring 38
Returned to position. Therefore, the magnet movable body 23 is
Impact sound can be prevented from colliding with C, 35D.
You. The detent acting in the traveling direction of the magnet movable body 23
Since the force is sufficient, it is near the stroke end of the magnet movable body 23.
The effect of the decrease in thrust due to the elastic force of the compression spring 38 near
I don't know. The other operation and effects are the same as those of the above-described seventh embodiment
Same as in the example. FIG. 10 shows a ninth embodiment of the present invention.
3 shows a dynamic linear actuator. In this figure,
Magnetic cylindrical yoke 21 and non-magnetic guide cylinder 24
Non-magnetic side plates 35A and 35B are fitted and fixed to both ends of
And a return ring on the inner periphery of the convex portion 37 of each of the side plates 35A and 35B.
Each of the permanent magnets 39 is fixed. And the
The inner circumferential holes of the return annular permanent magnet 39 and the bearing member 36 are magnetically
The penetrating shaft 27 of the stone movable body 23 penetrates. Return ring
Permanent magnet 39 is a permanent magnet 2 that magnet movable body 23 has.
A repulsive force is generated between the magnetic poles on the outer end faces of 5A and 25B.
Magnetic poles are provided on the surface facing the magnet movable body 23. example
For example, in FIG. 10, the outer end faces of the permanent magnets 25A and 25B are
The S pole of the returning annular permanent magnet 39 faces the S pole.
The other configuration is the same as that of the above-described seventh embodiment.
The same or corresponding parts are denoted by the same reference characters. According to the ninth embodiment, each coil 2A,
2B, 2C, the magnet movable body 2
Reference numeral 3 denotes permanent magnets 25A and 25B and left and right return annular permanent magnets.
Return to the intermediate position in cylindrical yoke 21 by the repulsive force of stone 39
And direct current to each coil 2A, 2B, 2C
The magnet movable body 23 can be driven to one side.
You. Also, if an alternating current is applied, the magnet movable body 23 moves forward.
It moves backward and operates as a vibrator,
The ring-shaped soft magnetic bodies 8A, 8B, 8C, 8D described in the embodiment
Detent force (If the amount of displacement becomes excessive,
Of the magnet movable body 23
In addition to the work regulations, the magnet movable body 23 has been displaced to some extent.
By the way, the permanent magnets 25A and 25B and the left and right
It is returned to the intermediate position by the repulsive force of the permanent magnet 39. Therefore, the magnetic
The stone movable body 23 is made up of the side plates 35A and 35B and the return annular permanent magnet.
It is possible to prevent the impact sound from being generated by colliding with the stone 39.
The detent force acting in the traveling direction of the magnet movable body 23 is
Because it is sufficient, the vicinity of the stroke end of the magnet movable body 23
Of thrust reduction due to repulsive force of return annular permanent magnet 39
There is almost no sound. The other effects are the same as those described above.
This is the same as the seventh embodiment. FIG. 11 shows a magnet according to a tenth embodiment of the present invention.
3 shows a movable linear actuator. In this figure,
The magnet movable body 23A is composed of two perforated cylinders of the same polarity facing each other.
Rare earth permanent magnets 25C, 25D, between those permanent magnets
A perforated columnar intermediate soft magnetic body 26,
Perforated discs placed outside the permanent magnets 25C and 25D
End soft magnetic bodies 29A and 29B and end soft magnetic bodies 29
A, perforated disk-shaped crusher located outside of 29B
The metal through shaft 27 is inserted through the mounting plates 31A and 31B,
A stopper (a metal E-ring) is inserted into the engagement groove 32 of the metal through shaft 27.
G) 33 is fitted and locked to the metal through shaft 27
Permanent magnets 25C, 25D, middle soft magnetic body 26, soft end
The magnetic bodies 29A and 29B and the disc-shaped cushion plate 31A,
31B is fixed. Here, the through shaft 27 is
Non-magnetic or magnetic metal, and cushion plates 31A, 31
B is an elastic material such as silicone rubber,
It is sandwiched between a pair of stoppers 33. As a result,
The permanent magnets 25C, 25D, the soft plates 31A, 31B
Absorbs variations in the thickness of the magnetic bodies 26, 29A, 29B
It is possible to prevent rattling. In addition, the metal
Permanent magnets 25C, 25D, soft magnetic body 26,
When integrating 29A and 29B, an adhesive may be used together.
No. The thickness of the end soft magnetic bodies 29A and 29B is
It is set to about 1/2 to 1 times of the soft magnetic body 26. In addition,
Other configurations are the same as those of the above-described seventh embodiment. In the tenth embodiment, the fourth to sixth embodiments
Similar to the magnet movable body 15 shown in the embodiment, the magnet movable body 2
End portions on the outer end surfaces of the permanent magnets 25C and 25D of the 3A
The soft magnets 29A and 29B are arranged, and the permanent magnet 2
The magnetic flux emitted from the magnetic poles on the outer end faces of 5C and 25D is soft magnetic at the end.
It is easy to bend in the vertical direction due to the presence of the sexual bodies 29A and 29B
Magnetic flux at the outside of the permanent magnets 25C and 25D
The vertical component of the density (the component perpendicular to the axial direction of the permanent magnet)
Increase. That is, based on Fleming's left-hand rule
Axial direction (longitudinal direction) of magnet movable body 23A that can contribute to thrust
Direction) can be increased, and the magnet movable body 23A
Coils 2A, 2B, 2C wound in an annular shape around a circle
Current in a direction that generates a magnetic field of opposite polarity alternately
Can generate even greater thrust
You. For example, compared with the case of the eighth embodiment having no end soft magnetic material,
As a result, a thrust improvement of about several to 10% can be obtained. What
Other functions and effects are the same as those of the above-described seventh embodiment.
You. In the tenth embodiment, FIG.
As shown by the phantom line, the convex portions 37 of the side plates 35A and 35B
The inner surface of the bearing member 36 fixed to the inner peripheral side of the
Pressure is applied between the disc-shaped cushion plates 31A and 31B on the body 23A side.
A compression spring 38A may be provided. The compression spring 38A is magnetic.
It has the function of pushing back the stone movable body 23A to the intermediate position. Obedience
Therefore, by disposing the compression spring 38A, the magnet movable body 2
3A collides with the side plates 35A and 35B to generate an impact sound.
Action similar to that of the eighth embodiment, such as being able to prevent
The effect is obtained. FIG. 12 shows a magnet according to an eleventh embodiment of the present invention.
1 shows a movable pump. In this figure, 40 is a reciprocating arm.
And a magnetic actuator of the reciprocating actuator 40.
On both sides of the stone movable body 43, cylinders as casing chambers
Chambers 51A and 51B are provided and the cylinder chamber 51
Pistons 52A and 52 as reciprocating driving bodies are provided at A and 51B.
B are slidably provided so that two pump parts 53A,
53B. The reciprocating actuator 40 is soft magnetic.
Inside the cylindrical yoke 41, three coils 2A, 2
B, 2C and each of the three coils 2A, 2B, 2C.
And the annular soft magnetic bodies 8A, 8 arranged at both ends, respectively.
B, 8C, 8D, and these coils 2A, 2B,
2C and the annular soft magnetic bodies 8A, 8B, 8C, 8D
Guide cylinder 4 for slidably guiding stone movable body 43
4 is made of insulating material (non-magnetic material) such as insulating resin
Fixed to the yoke 41. Inner diameter of guide cylinder 44
Is slightly larger than the outer diameter of the magnet movable body 43, and the inner circumference is a circle.
It has a peripheral surface. The magnet movable body 43 has the same polarity opposing arrangement.
Two columnar rare earth permanent magnets 5A, 5B and their permanent magnets
Cylinder-shaped intermediate soft magnetic body disposed between permanent magnets 5A and 5B
6 and arranged on the outer end faces of the permanent magnets 5A and 5B, respectively.
Shaft parts 45A and 45B and a non-magnetic cylindrical holder 47
And the permanent magnets 5A and 5B and the intermediate soft magnetic
Body 6 and disk-shaped parts 46A, 4 of shaft parts 45A, 45B
6B is housed in the cylindrical holder 47 and is made of an adhesive or a resin.
It is fixed by caulking at the end of the rudder. The three carp
2A, 2B and 2C are located between the magnetic poles of the permanent magnets 5A and 5B.
Connected so that currents flow in different directions
You. That is, the center coil 2B is connected to the middle soft magnetic body 6
And the ends including the N poles of the permanent magnets 5A and 5B.
Coils 2A and 2C include S poles of permanent magnets 5A and 5B
Each end can be surrounded,
Of the current flowing through the coil 2B at the center
12A and 2C are opposite to the direction of the current (see FIG. 12).
(See N and S attached to each coil.) The movable magnet 43 is slidably guided.
Pump section 53A is formed on the left side of guide cylinder 44 for
Have been. That is, on the left side of the guide cylinder 44,
A shaft chamber 51A is formed, and the shaft 48 of the shaft component 45A is formed.
A piston 52A is fixed to the tip surface of A with a bolt 49A.
ing. A suction hole 54A is formed in the end face of the piston 52A.
And a flexible material such as rubber for closing the suction hole 54A.
The plate suction valve 55A is connected to the piston 52 by the bolt 49A.
A is attached so as to overlap the end face of A. Also,
The O-ring 5 is used to seal the left opening of the Linda chamber 51A.
6, the lid 57A is fixed to the cylindrical yoke 41.
Have been. Connect to the right side position of the cylinder chamber 51A
Through the cylindrical yoke 41 and the guide cylinder 44
Lid having a suction hole 58A forming a side wall of the cylinder chamber 51A.
An exhaust hole 59A is formed in 57A. Similarly, the magnet movable body 43 is slidably moved.
A pump section 53B is provided on the right side of the guide cylinder 44 for guiding.
Is configured. That is, on the right side of the guide cylinder 44,
A cylinder chamber 51B is formed, and a shaft of the shaft part 45B is formed.
Piston 52B is fixed to the end surface of 48B with bolt 49B.
Have been. A suction hole 54B is provided on the end face of the piston 52B.
It is formed of rubber or the like that closes the suction hole 54B.
A flexible plate material suction valve 55B is pistoned with the bolt 49B.
It is attached so as to overlap the end face of 52B. Ma
In order to seal the right opening of the cylinder chamber 51B,
The lid 57B is connected to the cylindrical yoke 41 via the ring 56.
It is fixed. At the left side position of the cylinder chamber 51B
The cylindrical yoke 41 and the guide cylinder 4 are connected so as to communicate with each other.
4 is formed on the side wall of the cylinder chamber 51B.
The exhaust hole 59B is formed in the lid 57B that forms The reciprocating actuator of the eleventh embodiment
At 40, three coils 2 are connected so that the polarity shown in FIG.
A, 2B, 2C in a direction to generate a magnetic field of opposite polarity alternately
By passing the current, the magnet movable body 43
The thrust based on the left hand rule of
In the vicinity of the stroke end of the magnet movable body 43.
Of the movable stone 43 and each of the annular soft magnetic bodies 8B, 8C, 8D
The detent force (non-excitation attraction) works during
It is sucked in the moving direction (right direction). This detent force
Indicates that the outer end surface of the permanent magnet 5B at the right end of the magnet movable body 43 is circular.
It is maximum when approaching the annular soft magnetic body 8D,
When reaching near the center of the thickness of the soft magnetic material 8D, the detent
The force is zero. That is, the stroke end of the magnet movable body 43
The thrust in the vicinity has been strengthened. This detent force is
Cancels the repulsion force at the time of driving the stones 52A and 52B.
Work in the direction. Therefore, the load on the magnet movable body 43 increases.
The decrease in stroke when
It is possible to suppress the fluctuation of the stroke of the magnet movable body 43 accompanying
it can. In addition, the current of each coil 2A, 2B, 2C is reversed.
Then, the direction of the thrust of the magnet movable body 43 is also reversed, and similarly,
Detent force works. Therefore, each coil 2A, 2B, 2
By passing an alternating current through C,
It is a small and large thrust reciprocating actuator.
Works. Other operations of the reciprocating actuator 40
The effect is that the magnet movable linear
It is the same as the coutuator. As described above, the reciprocating actuator 4
By reciprocating 0, the cylinder chambers 51A, 51B
Pistons 52A and 52B reciprocate to form two pump units.
53A and 53B can be driven. That is, magnetic
When the stone movable body 43 moves rightward in FIG.
In 3A, the suction valve 55A opens and the left side of the cylinder chamber 51A
Inhaling air through the suction hole 58A and the suction hole 54A,
In the pump section 53B, the piston 52B is connected to the cylinder chamber 51B.
The air on the right side is compressed and sent out through the exhaust hole 59B. Ma
When the magnet movable body 43 moves to the left in FIG.
Pump 53B sucks air, and pump 53A draws air.
It is sent out through the exhaust hole 59A. With the magnet movable type pump of the eleventh embodiment,
Means that the reciprocating actuator 40 is small,
Thrust is obtained, and the annular soft magnetic bodies 8A, 8A
Magnet movable body by adding detent force by B, 8C, 8D
The thrust near the stroke end of 43 has been enhanced.
In the pump units 53A and 53B on both sides of the magnet movable body 43,
Prevents a decrease in stroke even when the load is large, and changes in load
The fluctuation of the pump efficiency due to the above can be suppressed. Follow
To drive the two pump units 53A and 53B in a small size.
An air pump with good efficiency can be realized. FIG. 13 shows a magnet according to a twelfth embodiment of the present invention.
1 shows a movable pump. In this case, the reciprocating drive
Reciprocating diaphragm is used instead of piston
You. That is, the configuration of the reciprocating actuator 60 is
Almost the same as the reciprocating actuator 40 of the eleventh embodiment described above.
Inside the cylindrical yoke 61 of soft magnetic material.
Coils 2A, 2B, 2C and annular soft magnetic bodies 8A, 8
B, 8C, and 8D.
The guide cylinder 64 for guiding the guide is insulated with an insulating resin or the like.
It is composed of a member (non-magnetic material). The guide cylinder 64
The right part of the casing chamber 70 is formed on the left side of
End of a covered cylindrical body 71 constituting a left portion of the casing chamber 70
Flexible (elastic) between the guide surface and the end surface of the guide cylinder 64.
The periphery of the thin plate-shaped diaphragm 72 is pinched and fixed.
ing. The covered cylindrical body 71 is a franc of the cylindrical yoke 61.
And has an intake hole 73 and an exhaust hole 74.
are doing. Then, the inside of the intake hole 73 and the exhaust hole 74
Valves 75 and 76 for preventing backflow are provided outside the
ing. For example, the valves 75 and 76 are made of a flexible plate material such as rubber.
And is fixed to the covered cylinder 71 at one end. Diaf
The central portion of the ram 72 is integrally fixed to the magnet movable body 43
Is connected to the shaft 48A of the shaft component 45A. Also,
On the right side of the guide cylinder 64, a shaft 48 of the shaft part 45B is provided.
A bearing hole 62 into which B is slidably fitted is formed.
The other configuration is the same as that of the eleventh embodiment,
The same or corresponding parts are denoted by the same reference characters. The reciprocating actuator of the twelfth embodiment
60 is the reciprocating actuator 40 of the eleventh embodiment.
As in the case of Fleming's left-hand rule, thrust and
It can reciprocate by tent force, and each coil 2
A, 2B, and 2C pass an alternating current to
Small and large thrust reciprocating actuator that repeats backward movement
(Magnet movable body with polarity shown in FIG. 13)
43 moves rightward). And this reciprocating act
The diaphragm 72 is reciprocated by driving the heater 60
And the casing chamber 7 isolated by the diaphragm 72
By increasing or decreasing the volume of the fluid introduction chamber 78 on the left side of
Inhalation of air and the like from the intake hole 73 and discharge from the exhaust hole 74
It can be executed alternately and repeatedly. With the magnet movable type pump of the twelfth embodiment,
Means that the reciprocating actuator 60 is small,
Thrust is obtained, and the annular soft magnetic bodies 8A, 8A
Magnet movable body by adding detent force by B, 8C, 8D
43, the thrust near the stroke end is enhanced. This
The detent force is the repulsion force when the diaphragm 72 is driven.
It works in the direction to negate. In particular, the diaphragm 72
Stroke end where elastic force is maximum, that is, load is maximum
Even when the magnet movable body 43 is located at
More thrust is obtained, and the stroke of the magnet movable body 43
Can be prevented from decreasing. Therefore, small and efficient air
A pump can be realized. FIG. 14 shows a magnet according to a thirteenth embodiment of the present invention.
3 shows a movable linear actuator. In this case, cylindrical
Inside the yoke 1, columnar rare earth permanent magnets 5A, 5B,
The current may flow in different directions across the magnetic poles of 5C
4 coils 2A, 2B, 2C, 2D
Divided bobbins 4A, 4B, 4C, and 4D
Between the 4A, 4B, 4C, and 4D and at both ends.
The magnetic bodies 8A, 8B, 8C, 8D, 8E are arranged and fixed, respectively.
To guide the movable magnet 13 slidably.
A cylindrical body is formed. The magnet movable body 13 has the same pole opposing arrangement.
Three columnar rare earth permanent magnets 5A, 5B, 5C
And between the permanent magnets 5A, 5B and 5C.
Columnar intermediate soft magnetic bodies 6A and 6B
Disc-shaped end portions respectively fixed to both outer end surfaces of A and 5C
The soft magnetic bodies 9A and 9B are integrated. In addition,
Other configurations are the same as those in the fifth embodiment. The magnet movable linear actuator of the thirteenth embodiment
As in the case of the fifth embodiment, the tuner is used for framing.
Reciprocating motion by thrust and detent force based on the left hand rule
And each coil 2A, 2B, 2C, 2D
A current that flows in
Functions as an ibrator (in the polarity shown in FIG.
The movable body 13 moves rightward). In this case, three eternal
4 magnet movable bodies 13 having permanent magnets 5A, 5B, 5C
Driven by the coils 2A, 2B, 2C, 2D
Therefore, the two permanent magnets shown in the fifth embodiment are provided.
Compared with a configuration in which a movable magnet is driven by three coils
Thrust and data based on Fleming's left-hand rule
Magnets with higher thrust
A dynamic linear actuator can be realized. In addition, other
Are similar to those of the fifth embodiment. In the first to twelfth embodiments, the magnetic
The stone mover is located between two permanent magnets of the same polarity and between the two permanent magnets.
Although it is configured to include an intermediate soft magnetic material,
As shown in the example, three permanent magnets of the same polarity and
Magnet movable body having an intermediate soft magnetic body provided between permanent magnets
May be driven by four coils. Further
Between four or more permanent magnets of the same polarity and between each permanent magnet.
The magnet movable body may be composed of an intermediate soft magnetic body
Therefore, the number of coils can be increased to 5 or more.
You. In each embodiment, the fixed-side soft magnetic material is used.
Is to satisfy the specifications of the device.
Arranged and fixed to at least one end of at least three coils
In the case of only one end, the thrust in one direction is strong
Be converted to The annular soft magnetic material shown in the third embodiment
As shown in the figure, the inner side facing the movable magnet is wider in the axial direction.
By devising the shape to be formed,
The strength and distribution of the tent force can be changed as appropriate. In each of the embodiments, the positions located on both outer sides
At least the annular soft magnetic material as the fixed side soft magnetic material
One is formed integrally with the soft magnetic cylindrical yoke.
May be. In each embodiment, the soft magnetic yoke is used.
The cylindrical yokes 1, 21, 41, 61 as half
Combine multiple split yokes, such as splitting in the direction
An integrated configuration may be used. In addition, the annular soft magnetic material is also half
Etc.
It is good also as a result. In this case, each split yoke and split soft magnetic
A configuration in which the body is formed integrally in advance is also possible. It should be noted that the pumps according to the eleventh and twelfth embodiments were used.
In the same manner as in the fourth, fifth or sixth embodiment,
On the outer end surface of the permanent magnet located at both ends of the magnet movable body in the axial direction
A configuration in which an end soft magnetic material is provided may be adopted. In each of the above embodiments, the coil and the fixed
Restrict (regulate) the mutual positional relationship of the constant side soft magnetic material
Means for using a soft magnetic yoke
Structure fixed to the inside with an insulating member (non-magnetic material) such as insulating resin
It may be good. For bobbins, more than half
Can be integrated by combining the divided bobbins
You. In each of the above embodiments, the cylindrical soft magnetic yaw
However, the present invention is not limited to this.
Adopt soft magnetic yoke and guide cylinder such as square cylinder.
According to this, the magnet movable body is also prismatic or square
It is possible to make it cylindrical, etc.
What is necessary is just to wind around the outer periphery of a magnet movable body,
The constant side soft magnetic body is also on the guide cylinder side surrounding the outer circumference of the magnet movable body.
It may be provided. Further, in the seventh to tenth embodiments, the magnetic
Bearing members are provided on both sides of the penetrating shaft 27 of the stone movable bodies 23 and 23A.
36, but only one side of the through shaft is supported by a bearing member.
May be adopted. In this case, the bearing member
(However, it is desirable to make the bearing member longer
New ). In the seventh to tenth embodiments, the shaft
The receiving member 36 supports the penetrating shaft 27 of the magnet movable body.
Guide for insulating members (non-magnetic material) such as insulating resin
The cylinder 24 is omitted and each coil is closed to the inner peripheral side of the yoke 21.
It is also possible to adopt a structure for fixing the rim. The embodiment of the present invention has been described above.
However, the present invention is not limited to this, but is described in the claims.
Those skilled in the art can make various modifications and changes within the scope.
Would be self-evident. As described above, the magnet movable according to the present invention can be used.
Type linear actuator and pump
The intermediate soft magnetic material between the at least two permanent magnets
To form a movable magnet, and the mutual positional relationship is regulated uniformly.
The magnet is movable inside at least three coils controlled
The body is movably provided, and at least three coils are provided.
At least one end or both ends of the magnet
The fixed side soft magnetic material is fixedly arranged so as not to
And three coils in phase with the boundary between the magnetic poles of each permanent magnet.
It was configured so that currents flow in different directions
The magnetic flux component perpendicular to the axial direction (longitudinal direction) of the magnet movable body
Can be made sufficiently large, and the at least three coils
Effective linkage between the magnetic flux generated by each magnetic pole of the movable magnet
And the vertical magnetic flux component of the magnet
Magnet based on Fleming's left-hand rule between the current
The thrust given to the movable body can be sufficiently increased. Further, a small number of the at least three coils
At least one fixed side soft magnetic material is provided at one end or both ends
Therefore, when the movable magnet moves to the stroke end,
Detent force (non-excitation attraction force) in the traveling direction of the stone movable body
Thrust to compensate for the drop in thrust near the stroke end
The load on the movable magnet increases due to
Stroke can be reduced, and load
To reduce fluctuations in the stroke of the magnet movable body due to movement.
it can. Further, when the magnet movable body reciprocates, the magnet
Even if one end of the movable body passes through the fixed soft magnetic body,
Detent force of the soft magnetic material on the fixed side so that the pulled end is pulled back
Works in the opposite direction to the moving direction of the magnet
Without magnetically controlling the stroke of the magnet
It is also possible to make a return movement. Further, for the at least three coils,
Reciprocating drive for casing chambers provided in a fixed positional relationship
Body and the reciprocating drive body is attached to the magnet movable body.
In the case of a movable magnet type pump constructed by connecting
Detent force acting in the direction of travel of the (reciprocating drive) can be magnetized
Counteracts repulsion that increases with increasing displacement of moving body
Pump stroke by securing sufficient stroke of the magnet
Of pump efficiency due to load fluctuations
Can be obtained. In addition, direct electromagnetic reciprocation with AC voltage
No need for mechanical return mechanism such as return spring
The number of parts is reduced, the mechanism is simplified, and the size is reduced.
Is possible. Therefore, it can be driven efficiently with small size and small current.
A movable magnet type pump can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front sectional view showing a movable magnet type linear actuator according to a first embodiment of the present invention. FIG. 2 is a side view of the same. FIG. 3 is a front sectional view showing a movable magnet type linear actuator according to a second embodiment of the present invention. FIG. 4 is a front sectional view showing a movable magnet type linear actuator according to a third embodiment of the present invention. FIG. 5 is a front sectional view showing a movable magnet type linear actuator according to a fourth embodiment of the present invention. FIG. 6 is a front sectional view showing a movable magnet type linear actuator according to a fifth embodiment of the present invention. FIG. 7 is a front sectional view showing a movable magnet type linear actuator according to a sixth embodiment of the present invention. FIG. 8 is a front sectional view showing a movable magnet type linear actuator according to a seventh embodiment of the present invention. FIG. 9 is a front sectional view showing a movable magnet type linear actuator according to an eighth embodiment of the present invention. FIG. 10 is a front sectional view showing a movable magnet type linear actuator according to a ninth embodiment of the present invention. FIG. 11 is a front sectional view showing a movable magnet type linear actuator according to a tenth embodiment of the present invention. FIG. 12 is a front sectional view showing a movable magnet type pump according to an eleventh embodiment of the present invention. FIG. 13 is a front sectional view showing a movable magnet type pump according to a twelfth embodiment of the present invention. FIG. 14 is a front sectional view showing a movable magnet type linear actuator according to a thirteenth embodiment of the present invention. FIG. 15 is a front sectional view showing a conventional example. 16 is a graph showing the relationship between the displacement and the thrust of the movable magnet linear actuator of the first embodiment of FIG. 1 and the movable magnet of the conventional example of FIG. [Description of Signs] 1,21,41,61 Cylindrical yokes 2A, 2B, 2C, 2D Coils 3,13,15,23,23A, 43 Magnet movable bodies 4,4A, 4B, 4C, 4D, 14A, 14B , 14C
Bobbins 5A, 5B, 5C, 25A, 25B, 25C, 25D
Permanent magnets 6, 6A, 6B, 26 Intermediate soft magnetic bodies 8A, 8B, 8C, 8D, 8E, 18A, 18B, 18
C, 18D Toroidal soft magnetic body 9A, 9B, 29A, 29B End soft magnetic body 27 Penetrating shaft 35A, 35B, 35C, 35D Side plate 36 Bearing member 38, 38A Compression spring 40, 60 Reciprocating actuator 51A, 51B Cylinder Chambers 52A, 52B Pistons 53A, 53B Pump section 72 Diaphragm

Continuation of the front page (56) References JP-A-6-38486 (JP, A) JP-A-6-44385 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) H02K 33 / 16 F04B 17/04

Claims (1)

  1. (57) [Claims 1] An intermediate soft magnetic body is provided between at least two permanent magnets of the same polarity facing each other to form a magnet movable body, and the mutual positional relationship is regulated to be constant. The magnet movable body is movably provided inside the at least three coils, and the fixed soft magnetic body is positioned at at least one end or both ends of the at least three coils so as not to hinder the movement of the magnet movable body. Wherein the at least three coils are connected such that currents flow in different directions with the boundary between the magnetic poles of each permanent magnet when a thrust is generated. 2. The magnet movable linear actuator according to claim 1, wherein a fixed-side soft magnetic material is fixedly arranged between the at least three coils. 3. A soft magnetic yoke formed integrally with or separately from the fixed soft magnetic body is provided on an outer peripheral side of the at least three coils, and is provided in a direction perpendicular to a magnetization direction of the permanent magnet. 3. The movable magnet type linear actuator according to claim 1, wherein a magnetic circuit for increasing a magnetic flux component is configured. 4. The magnet movable linear actuator according to claim 1, wherein an end soft magnetic body is provided on an outer end face of the permanent magnet located at both axial ends of the magnet movable body. 5. A spring which pushes back the magnet movable body on one side or both sides of the magnet movable body or a return permanent magnet which generates a repulsive force against the magnet movable body is provided.
    5. The magnet movable linear actuator according to 2, 3, or 4. 6. A magnet movable body is provided by providing an intermediate soft magnetic body between at least two permanent magnets of the same polarity facing each other, and the inside of at least three coils whose positional relationship is regulated to be constant. The magnet movable body is movably provided on at least one end or both ends of the at least three coils, and a fixed soft magnetic body is fixedly arranged at a position where the movement of the magnet movable body is not hindered. Are connected so that currents flow in different directions between magnetic poles of each permanent magnet when thrust is generated, and reciprocally drive a casing chamber provided in a fixed positional relationship with the at least three coils. A movable magnet type pump, wherein a body is provided and the reciprocating drive is connected to the movable magnet. 7. The magnet movable pump according to claim 6, wherein the fixed side soft magnetic material is arranged between each of the at least three coils. 8. A soft magnetic yoke formed integrally with or separately from the fixed soft magnetic body is provided on an outer peripheral side of the at least three coils, and is provided in a direction perpendicular to a magnetization direction of the permanent magnet. 8. The magnet movable pump according to claim 6, wherein a magnetic circuit for increasing a magnetic flux component is configured. 9. The magnet movable type pump according to claim 6, wherein an end soft magnetic body is provided on an outer end surface of the permanent magnet located at both axial ends of the magnet movable body. 10. The magnet movable pump according to claim 6, wherein said casing chamber forms a cylinder chamber, and said piston as said reciprocating drive is slidably provided in said cylinder chamber. . 11. The magnet movable pump according to claim 6, wherein the reciprocating drive is a flexible diaphragm, and a peripheral edge of the diaphragm is fixed to the casing chamber.
JP27572494A 1994-10-14 1994-10-14 Magnet movable linear actuator and pump Expired - Fee Related JP3483959B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27572494A JP3483959B2 (en) 1994-10-14 1994-10-14 Magnet movable linear actuator and pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27572494A JP3483959B2 (en) 1994-10-14 1994-10-14 Magnet movable linear actuator and pump

Publications (2)

Publication Number Publication Date
JPH08116658A JPH08116658A (en) 1996-05-07
JP3483959B2 true JP3483959B2 (en) 2004-01-06

Family

ID=17559501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27572494A Expired - Fee Related JP3483959B2 (en) 1994-10-14 1994-10-14 Magnet movable linear actuator and pump

Country Status (1)

Country Link
JP (1) JP3483959B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017039151A1 (en) * 2015-09-01 2017-03-09 (주)하이소닉 Haptic actuator
KR101858969B1 (en) * 2016-06-22 2018-05-18 (주)알비케이이엠디 Apparatus with magnetic brake for generating vibration in portable device

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2245889C (en) * 1996-02-14 2001-04-24 Dionex Corporation Magnetic direct drive reciprocating pump apparatus and method with integral pressure sensing
US6966760B1 (en) 2000-03-17 2005-11-22 Brp Us Inc. Reciprocating fluid pump employing reversing polarity motor
JP2002051531A (en) * 2000-05-24 2002-02-15 Misron Norhisam Movable magnet type actuator
CN100567732C (en) 2004-03-22 2009-12-09 信浓绢糸株式会社 Electromagnetic pump
US7378765B2 (en) 2004-08-09 2008-05-27 Oriental Motor Co., Ltd. Cylinder-type linear motor and moving part thereof
JP4551157B2 (en) * 2004-08-09 2010-09-22 オリエンタルモーター株式会社 Cylinder type linear motor
US7753657B2 (en) 2005-02-02 2010-07-13 Brp Us Inc. Method of controlling a pumping assembly
JP2006246691A (en) * 2005-03-03 2006-09-14 Nippon Ekorojii Kk Linear oscillating actuator module
JP4756472B2 (en) * 2006-05-11 2011-08-24 株式会社安川電機 Manufacturing method of cylindrical linear motor field part and cylindrical linear motor
US20080036303A1 (en) * 2006-06-15 2008-02-14 Clive Graham Stevens Linear motor for imparting vibration to a supported body
JP2008061397A (en) * 2006-08-31 2008-03-13 Juki Corp Motor and method of winding coil
JP5126649B2 (en) * 2007-01-30 2013-01-23 日立金属株式会社 Linear actuator
CN101669269B (en) 2007-05-09 2012-06-06 胜美达集团株式会社 Oscillation type electromagnetic power generator and method for manufacturing oscillation type electromagnetic power generator
JP2008301660A (en) * 2007-06-01 2008-12-11 Fps:Kk Actuator
JP5342207B2 (en) * 2008-10-21 2013-11-13 カヤバ工業株式会社 Linear actuator
KR101657276B1 (en) 2008-11-18 2016-09-13 히다찌긴조꾸가부시끼가이사 Movable element, armature, and linear motor
JP5604097B2 (en) * 2009-04-15 2014-10-08 Thk株式会社 Linear motor actuator
KR101059599B1 (en) * 2009-07-01 2011-08-25 삼성전기주식회사 linear vibration motor
GB2471913B (en) 2009-07-17 2012-02-01 Samsung Electro Mech Horizontal linear vibrator
KR101061576B1 (en) * 2009-07-20 2011-09-02 삼성전기주식회사 Linear Vibration Motor with Magnet Casing
KR101079448B1 (en) 2009-09-24 2011-11-03 삼성전기주식회사 horizontal linear vibrator
KR101022899B1 (en) * 2009-10-06 2011-03-16 삼성전기주식회사 Horizontal linear vibrator
CN101867334B (en) * 2010-06-12 2012-07-04 杭州玄能科技有限公司 Magnetic engine
KR101035339B1 (en) * 2010-11-02 2011-05-23 송하형 Cylinder type linear vibration motor for portable communication device
KR101255914B1 (en) * 2010-12-31 2013-04-23 삼성전기주식회사 Linear Vibration Motor
WO2012115312A1 (en) * 2011-02-22 2012-08-30 Kim Man Su Piston pump heating system
KR101223069B1 (en) 2011-05-30 2013-01-17 (주) 디에이치홀딩스 Activity Operation type Eco Pedal Apparatus
KR101224432B1 (en) * 2011-08-30 2013-01-22 한국과학기술원 Vibration generating module, actuator using the same, and handheld device
KR101224436B1 (en) * 2011-08-30 2013-01-22 한국과학기술원 Vibration generating module, actuator using the same, and handheld device
KR101286471B1 (en) * 2011-08-30 2013-07-16 한국과학기술원 Vibration generating module, actuator using the same, and handheld device
KR101246041B1 (en) * 2012-03-16 2013-03-26 연성흠 Current generation unit and operating device for generator using this
US20140054983A1 (en) * 2012-08-24 2014-02-27 Samsung Electro-Mechanics Co., Ltd. Linear vibrator
KR102030597B1 (en) * 2013-03-15 2019-11-08 주식회사 엠플러스 Vibrator and electronic apparatus having thereof
KR20150127748A (en) * 2013-04-12 2015-11-17 미쓰비시덴키 가부시키가이샤 Movable element and linear motor
DE102013206897A1 (en) * 2013-04-17 2014-10-23 Kendrion (Villingen) Gmbh Electromagnetic actuator
JP2015205708A (en) * 2014-04-18 2015-11-19 大森機械工業株式会社 Top seal device
JP6471378B2 (en) * 2014-08-28 2019-02-20 新電元メカトロニクス株式会社 Air blower
JP6573228B2 (en) * 2015-02-19 2019-09-11 日本電産セイミツ株式会社 Vibration motor and method for manufacturing vibration motor
JP6396261B2 (en) * 2015-07-01 2018-09-26 日本電産コパル株式会社 Linear vibration motor
CN105207441B (en) * 2015-09-23 2017-11-21 歌尔股份有限公司 Linear vibration motor
CN105207440B (en) * 2015-09-23 2017-11-21 歌尔股份有限公司 Magnetic balance is oriented to linear vibration motor
CN105207442B (en) * 2015-09-23 2017-11-21 歌尔股份有限公司 Linear vibration motor
CN105406677B (en) * 2015-11-25 2019-03-05 歌尔股份有限公司 A kind of linear vibration motor
CN105281528B (en) * 2015-11-25 2018-07-27 歌尔股份有限公司 Linear vibration motor
CN105356710B (en) * 2015-11-25 2018-11-30 歌尔股份有限公司 Linear vibration motor
CN105262310B (en) * 2015-11-25 2019-01-18 歌尔股份有限公司 Linear vibration motor
CN105281527B (en) 2015-11-25 2018-06-26 歌尔股份有限公司 Linear vibration motor
CN105406678B (en) * 2015-11-25 2019-02-15 歌尔股份有限公司 Linear vibration motor
CN105406676B (en) * 2015-11-25 2019-01-11 歌尔股份有限公司 A kind of linear vibration motor
CN105576936B (en) * 2016-02-02 2017-11-07 重庆斯科彼欧科技有限公司 A kind of Vibration type generating apparatus
CN105811725B (en) 2016-03-11 2018-09-07 歌尔股份有限公司 A kind of linear vibration motor
JP2019022362A (en) * 2017-07-19 2019-02-07 日立アプライアンス株式会社 Reciprocation type linear motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017039151A1 (en) * 2015-09-01 2017-03-09 (주)하이소닉 Haptic actuator
KR101858969B1 (en) * 2016-06-22 2018-05-18 (주)알비케이이엠디 Apparatus with magnetic brake for generating vibration in portable device

Also Published As

Publication number Publication date
JPH08116658A (en) 1996-05-07

Similar Documents

Publication Publication Date Title
JP4400463B2 (en) Vibration type linear actuator and electric toothbrush using the same
US6873067B2 (en) Linear oscillator
EP1626483B1 (en) Reciprocating linear drive actuator and electric toothbrush
US8176887B2 (en) Electromagnetic actuating device
CA2007714C (en) Permanent magnet linear electromagnetic machine
DE10240774B4 (en) Electromagnetic actuator
JP3475949B2 (en) Linear oscillator
US20020014344A1 (en) Hand-held tool with electromagnetic hammer mechanism
US6379125B1 (en) Linear compressor
US5896076A (en) Force actuator with dual magnetic operation
US6736614B1 (en) Rotary piston drive mechanism
US4675563A (en) Reciprocating linear motor
US6392516B1 (en) Latching solenoid with improved pull force
JP2007527686A (en) Linear electromechanical for power generation or motivational drive
US3931554A (en) Reciprocating motor-compressor system
TW526629B (en) Magnet movable electromagnetic actuator
US5434549A (en) Moving magnet-type actuator
EP1381776B1 (en) Linear compressor
JP2009516117A (en) Membrane pump
TW507047B (en) Magnetic actuator
JP2004528794A (en) Electromagnetic devices particularly useful as vibrators in fluid pumps
US6946754B2 (en) Linear motor and linear compressor
EP0392784B1 (en) Electromagnetic valve utilizing a permanent magnet
US3894817A (en) Oscillatory armature piston pump
EP0910856B1 (en) Quiet ferrofluid solenoid

Legal Events

Date Code Title Description
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20030909

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071017

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081017

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081017

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091017

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091017

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101017

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111017

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121017

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees