JP2005261173A - Reciprocating linear driver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform reciprocating motions directly at DC current with a simple structure. <P>SOLUTION: Two annular coil yokes 1 winding exciting coils 2 are faced each other in the magnetic flux generating direction. A magnet yoke fastening a plurality of magnets on a magnet body or a back yoke is installed between the annular coil yokes 1 as an oscillating element 9. The signal detected in a non-contact sensor is alternately inverted by electronic controller on the surface of a case between coil yokes with the oscillating element 9 sandwiched. Otherwise, a rocker lever tilting mechanism comprising a sensor magnet as a mechanical means and a switch detect a transmitting condition. The mechanism alternately inverts and distributes both poles of the DC current by the response motion. A signal amplification alternating current including an AD by the device capable of energizing/applying to the exciting coils 2 as a pseudo alteration current directly applies to the exciting coils 2 by change-over means such as the switch. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In the present invention, the motor shaft is reciprocated instead of rotated by direct current in the same manner as the rotating motor, and the shaft is connected to various transmission media, or the device itself reciprocates, vibrates or It performs functions such as linear operation. That is, a permanent magnet or its structure can be reciprocated between two electromagnet magnetic fields so that it can reciprocate or swing left and right with a shaft, and the DC current positive and negative electrodes of the electromagnet coil are alternately reversed by a switching mechanism. Or a reciprocating motion linear drive device capable of transmitting or controlling a reciprocating motion of a swinger coupling shaft to a connecting medium.

  Conventionally, a product close to this type has changed the motor shaft rotational motion into a linear motion by a disk cam mechanism or the like. An air pump or the like that is directly operated linearly vibrates in a reciprocating manner with a fixed wavelength of an AC AC power source. Similarly, there are electromagnetic valves and solenoid valves for linear operation. In the general market, there is no direct linear drive device, and this is handled by using a rotating motor. When applied as a vibration device, a weight is attached to the shaft and used as an unbalance swing mechanism. Similarly, when the motor is reciprocated, a linear operation is performed by a cam or wire winding mechanism attached to the shaft by various devices such as a DC motor forward / reverse rotation control circuit. Moreover, even if there are solenoid valves and solenoids that are directly operated linearly with a direct current, long-term continuous reciprocation cannot be expected. Various electronic control circuits for motor forward / reverse operation have been devised, from simple ones to complicated and sophisticated controls. However, if there is a device that can be directly linearly driven, it is unnecessary. At present, there are no low-cost linear motors that can be directly reciprocated by direct current.

  The problem to be solved is a linear motor that can be directly reciprocated by a direct current without using a rotating motor. It is obvious that the magnet attracts and repels due to the alternating magnetic poles. However, in order to efficiently convert the magnetic flux energy into kinetic energy and reciprocate with an inexpensive mechanism, the DC positive and negative electrodes are timed immediately before the coil yoke. It is reversed and applied to the exciting coil as an alternating current. Converting direct current to alternating current can be easily configured in an electronic circuit, but is more complicated than a mechanical type, and is not practical for a reciprocating linear motor that requires a smaller size and lower cost. In order to make the mechanism easy to operate at low cost, a part corresponding to the rotating part brush of the rotating motor capable of converting direct current into alternating current by self-operation is required. In addition, it requires a mechanism for balanced reciprocation with high electrical energy conversion efficiency, long life, high maintainability, and easy-to-control structure. This is an apparatus having an internal structure that can be used not only as various plungers and linear drive mechanisms but also as a free piston and as a pump or vibrator.

  The reciprocating linear drive device according to claim 1 of the present invention constitutes a magnetic circuit that can achieve higher maintainability and kinetic energy conversion efficiency with a simple mechanism, and reciprocates with a direct current. In order to perform the repulsive and attracting action of the coil fluctuation magnetic flux with the self-switching mechanism, it is constituted by a sensor and a switching circuit mechanism that captures the movement of the swinging element in a non-contact manner by a change in light, magnetic flux and coil impedance, When the swinger reaches a predetermined position, the positive and negative electrodes are simultaneously reversed, and the excitation coil is energized as a pseudo-alternating current, and the swinger is reciprocated between the coil yokes at low to high speed by voltage-current control. The operation is applied and utilized as linear energy or vibration energy.

That is, two coil yokes in which NS magnetic poles generated in the exciting coil by DC current conduction are formed of electromagnetic soft iron that guides to the same surface and an annular coil is inserted and fixed in a concave container having a through-shaft hole in the center are predetermined. A swinging element composed of magnets facing each other at an interval and attracted and repelled by the varying magnetic flux is arranged in the middle. Basically, the swinging element may be a permanent magnet as long as it attracts and repels the coil magnetic flux. However, the magnetic flux of the exciting coil of the facing coil yoke is induced at the peripheral end of the inner and outer rings of the container. A magnetic field that reacts face-to-face is required. When downsizing the device, it is necessary to make the mass of the swing element as light as possible, and a single magnet can be used as the swing element. That is, a ring-shaped rare earth magnet or the like magnetized in the circumferential direction is normally used as a swinging element by connecting a shaft to use external force. However, the magnet itself can be used as a piston or the like and applied to a pump device or the like. A magnet yoke with magnets attached to both sides of a disk-shaped back yoke made of iron material forms a strong magnetic field that reacts stably to the coil side fluctuation magnetic flux, and can perform high repulsion and high suction operation, but it is heavy. However, it is difficult to reduce the size. However, if the magnetic pole directions of a large number of disk-shaped magnets are aligned, and the yoke structure is fixed radially to the back yoke so as to match the inner ring-side generated magnetic field of the coil yoke, a considerably large device can be configured. . Both sides of the magnetic field of the ring-shaped magnet that is magnetized in the thickness direction, that is, the NS magnetic poles on the upper and lower surfaces, are fixed to the disk-shaped back yoke with the outer peripheral edge raised like a bowl. The magnetic flux on the side is induced on the inner ring portion of the magnet surface, and the magnetic flux magnetic field on the opposite electrode side, that is, the side bonded to the back yoke, is induced on the yoke outer ring. The magnetic poles of the magnets bonded to both sides of the magnet yoke are arranged in a magnetic field arrangement that can react symmetrically with the magnetic flux on the coil yoke side. Therefore, if the wiring is countered by a combination of current positive and negative electrodes on the coil side, it can operate corresponding to the facing magnetic pole magnetic field, so there is no problem even if the magnetic poles fixed on both sides of the magnet yoke are different on the left and right sides. In order to propagate this reciprocating motion to the outside, a shaft made of a non-magnetic material processed from brass or aluminum formed integrally with the swing is extended to one side or both sides. In addition, the coil yoke shaft hole is provided with a bearing for holding and sliding the swing shaft, and further serves as a compression spring receiving portion. The swinging member is sandwiched between compression coil springs inserted into the shaft and held between the coil yokes. The swing element works even with a combination of magnetic field repulsion of the coil yoke alone, but the operation is unstable and it is difficult to avoid the collision of the swing element with the coil yoke surface, but the balance is maintained by hanging it in the middle with a spring. can do. In the case of a single magnet structure, the shaft is also formed integrally with the swaying member on one side or both sides of the swaying member, and one or both ends of the shaft extend outside the case as an external transmission shaft.

In order to reciprocate these structures with a direct current, it is necessary to energize and apply a pseudo alternating current to the coil. In order to reverse the swaying element, it is only necessary to have a sensor that senses the position of the top dead center of the swaying element and a switching mechanism that simultaneously reverses the DC poles at a high speed. As a sensing method, a magnetic field from the outer ring outer periphery of the rotor is sensed, or a sensor such as a magnet embedded in the shaft, a sensitive mechanism, an electronic circuit that senses a current change due to the magnet movement of the exciting coil, or a photo sensor. It can be driven by various methods such as a shaft position sensor. Since the inverting circuit is almost similar to the forward / reverse control circuit of the rotation motor, it can be applied. Therefore, the electrode inversion switching circuit, the swing position sensor, and the wiring mechanism are integrally cased by a cylindrical case made of an aluminum material or a resin material.

The reciprocating linear drive device according to the invention of claim 2 relates to a swing structure for maximally and effectively utilizing the efficiency of the magnetic circuit, and the oscillator is composed of a back yoke and two permanent magnets. In order to make the fixed magnetic pole magnetic field react with the counterpart coil yoke magnetic flux magnetic field with high efficiency, the magnetic pole surfaces bonded to both sides of the back yoke are the same polarity on both sides, and the counter electrode guided to the outer edge is the same polarity on the double sided magnets. Further, an effective magnetic field zone in which the gap between the outer peripheral edge of the adhesive magnet and the inner peripheral edge of the back yoke is provided with a gap of at least about 10% of the inner diameter of the yoke and can be made to correspond to the generated magnetic field on the coil yoke side. It is characterized by ensuring.

According to a third aspect of the present invention, the reciprocating linear drive device accurately senses the operating position of the swaying element by mechanical means to reciprocate the swaying element by a DC power source, and attracts repulsion induction magnetic flux to the exciting coil. The present invention relates to a positive / negative polarity reversal mechanism of a current that generates a current. In a large-sized apparatus, a method of achieving the purpose without contact is adopted for the purpose of simplifying the basic structure of the main body as much as possible. However, in the case of downsizing, further cost reduction is required. The present invention aims to achieve the object with a simple mechanism without using an electronic circuit or a complicated sensor.

That is, in order to incorporate a sensing rocker lever corresponding to a brush of a rotating motor, a narrow groove is opened at the middle position between the left and right coil yokes so as to sandwich the oscillator, and a rocker lever with a thin plate shape or a thin rod shape is formed. A rocker lever arm extending in the inner diameter direction protrudes from both ends of the lever or at two intermediate positions, and is pushed by the swinger and disposed just before the end face of the coil yoke. The mechanism is structured such that a sensor-sensing magnet is fixed or a projection is formed at the center of the lever. If a magnetic flux sensitive read switch or a latch type micro switch is arranged directly above or in the magnet magnetic field sensing range, and the slider moves to a predetermined sensing position immediately before the coil yoke, it switches to the reversal current and It constitutes a functional structure that moves the mover to the opposite side. That is, when the circuit switch of this apparatus is turned on, the swinging member held in the middle immediately moves to the coil yoke side in a certain direction with one side attracted and the other side repulsive. Push the arm of the rocker lever toward the coil yoke at the intermediate position. A lead switch that senses the magnetic field in the center of the lever just before coming into contact with the coil yoke works to directly switch the positive and negative current poles of one side circuit. At the same time, a lead switch in another circuit system installed on the opposite side of the cylindrical case is also operated to reversely energize the current electrode. By these two rocker lever operations, the positive and negative electrodes are reversed to the exciting coil, a direct current is applied, and the swinger moves to the opposite side. However, the arm is discarded, so the reversed current continues to the coil. When the opposite arm is pressed while the voltage is continuously applied, the operation of switching to the reverse current is repeated. The moving distance of the micro magnet arranged at the center of the rocker lever is synchronized with the moving distance of the rocker arm, but a thin plate such as a permalloy is used as a magnetic field block or adjustment plate to adjust magnetic flux sensing accurately. -Place and adjust between the switch. The lead switch is a transfer type that is built into the positive and negative circuits, so that one of the currents always flows, and the rocker lever switch operation is always a wiring circuit in which an energization circuit opposite to the swing direction works. Therefore, the device does not stop halfway during an electrical error operation. In other words, the important operation of this mechanism is not only sensing the position of the swaying element, but the swaying element pushes the arm just before the coil yoke to operate the lead switch, energizing the coil with reversal current and repelling it. At the same time, the opposite coil yoke generates a magnetic flux and continuously energizes until the swinging member pushes the opposite arm to return.

According to a fourth aspect of the present invention, there is provided a reciprocating linear drive device comprising a control unit in which a rocker lever mechanism and a control mechanism such as a lead switch as a changeover switch are housed in separate cases. And a fastening means such as a screw. As a result, maintenance, reliability, and productivity can be improved and costs can be reduced. That is, the first main body case is pre-processed with a rocker lever or a narrow groove for arm insertion of the lever at a predetermined position, and a screw hole for fixing the control unit. . A rocker lever with both end arms protruding from the case on the back side of the control unit is inserted so as to be along the groove, and fixed with screws or the like at both ends of the case.

Since the reciprocating linear drive device according to the invention of claim 5 can react to the alternating current with high efficiency, not only the direct current power source but also the alternating alternating current such as alternating current or music signal can be used as the input power source. Can work. Therefore, by bypassing the DC power supply electrode inversion circuit, amplifying current such as a music signal is directly applied to the exciting coil of the coil yoke and reacted with the magnet yoke magnetic flux, so that it can be used as a music-linked vibration device or signal amplification. A reciprocating linear drive device that can be applied as a current synchronous drive device.

  According to the first aspect of the present invention, the shutter operation of the security camera and the drive of various vibrators are usually driven by a rotating motor, or a cam or the like is interposed by forward / reverse rotation control by a special electronic circuit. Although the linear operation is taken out, the mechanism can transmit the reciprocal motion directly when the DC power is turned on, it can operate even when the current is temporarily turned on and off, and the power can be controlled by adjusting the voltage. -Adjusting the lever length, arm position, and area of the sensing sensor makes it easy to adjust the amplitude and swing distance. In addition, since the structure is simple, it can be produced in a common structure from a reciprocating linear motor as small as a thumb to a super large size like a DC brush type motor, and linear engines such as pumps, vibration devices, various switchers, plungers, etc. It can be applied to various home appliances, office equipment, toys, etc.

According to the second aspect of the present invention, the mechanism that affects the efficiency of the apparatus is to increase the clear magnetic flux separation of the swing magnet, the coil yoke fluctuation generating magnetic field, and the magnet yoke fixed magnetic field as much as possible. It is the formation of an effective magnetosphere that can react. Therefore, unlike the conventional magnetic circuit concept, it is not necessary to concentrate the magnetic flux in one place. Any attractive repulsion magnetic circuit that covers the magnetic field magnetosphere of each other may be used. Therefore, the magnetic color circuit can be simplified and a highly efficient magnetic application mechanism can be achieved.

A reciprocating linear drive device according to a third aspect of the present invention can apply and energize a coil yoke exciting coil by using a rocker lever mechanism having a memory function as a quasi-alternating current and a reciprocating motion of a swinging element. It can be done. Also, the lead switch or micro switch is a transfer type or latch type, and is incorporated in the DC positive / negative circuit, so that one of the currents always flows. The switch operation of the rocker lever must always be in the far direction. Since the reverse energization circuit works, the device does not stop halfway. That is, the important process in this mechanism is not only sensing the position of the swing element, but also the lead switch works immediately before the coil yoke, and a reversal current is passed through the coil to generate a repulsive magnetic flux. The opposite coil yoke has a mechanical memory function in which energization continues until energizing magnetic flux is generated and the swinger pushes back the arm of the rocker lever. Therefore, a reciprocating linear drive device with a simplified mechanism and easy operation could be constructed.

According to the invention of claim 4, since the control portion and the drive portion can be completely separated, it is possible to achieve compactness and improve operability and maintainability. Also, the amplitude adjustment of the swing element can be adjusted by changing the reversal position between the swing elements, that is, the distance between the arm position of the rocker lever and the magnetic sensor, so productivity can be increased by making these functions separate units. As a result, adjustments and repairs become easier and the model can be diversified.

According to the invention of claim 5, since it is a high-efficiency swing device, it is possible to isolate a direct current electrode switching alternating circuit and directly apply an alternating current or a variable alternating amplification current to thereby vibrate a vibration device or a low-frequency music sensation device. Can be used as an application.

  It is an object of the present invention to provide a DC-driven general-purpose linear motor that can reciprocate with the same ease as a rotary motor, and to provide electromagnetic switching motors such as various small pump power sources and DC solenoids. Applications that are applied to home appliances and office equipment, toys, various alarm devices, music signals, and low-frequency massage alternating wavelength signals without the need for circuits such as high-cut filters. As a vibration device that can be driven by a current in the frequency range, it must be applicable. Therefore, miniaturization, long life, explosion-proof properties, etc. must be provided at a low price as much as possible. Therefore, in order to achieve performance and miniaturization, a high magnetic force material such as a rare earth magnet is used, and either the NS pole can be used as the adhesion magnetic pole surface to the yoke surface of the magnet to be fixed. The back side is a yoke fixing surface, and the two coil yoke polarities facing each other are connected wirings that operate in opposition to the magnetic pole surface. A general dry battery or household AC-DC adapter can be used as a power source.

  FIG. 1 is an external view of a main body of a reciprocating linear drive device according to the present invention. A shaft connected to an external output shaft extends from a central portion on one side of a case, and a radiator / fixing bracket for fixing the main body to a structure. 31 is fixed at both ends to the coil yoke bottom 2 with screws. This apparatus is composed of double cases 7 and 11. Inside the gap, a rocker lever 12, a sensing magnet 16, lead switches 14, 15, a DC / AC power source switch 21 and a wiring terminal block 18 are formed on a substrate 26, and these members Is stored.

FIG. 2 is a side cross-sectional view of the apparatus. The swing element 9 is magnetized in the circumferential direction by a rare earth metal neodymium magnet, but the polarity may be any as long as it corresponds to the exciting coil. In the embodiment, the outer ring is N pole magnetized and the inner inner ring side is S pole magnetized. An exciting coil 2 is inserted and fixed to the opposing coil yoke 1. A shaft 4 extending left and right from the center of the magnet swinger 9 passes through the coil yoke shaft hole 1 and extends to transmit the reciprocating motion to the outside. In the coil yoke shaft hole, a bearing / spring seat 5 is formed, and a compression spring 8 inserted into the shaft is disposed. This compression spring is inserted into the swing shaft 4 and is formed so as to be positioned between the coil coil yoke 1 and the coil yoke 1 from the left and right when not energized. In addition, the rocker lever 12 puts out the arm 13 from the wall surface opening 24 in the middle of the left and right coil yokes so that the magnet rocker 9 is sandwiched between the gaps in the double case. The arm has a mechanism in which a rubber member 16 for buffering or the like is attached by adhesion or the like and is moved to a predetermined position in the vicinity of the coil yoke by a rocker outer ring, and a small size is provided in the center of the rocker lever 12 The magnet 16 is fixed. On the outside thereof, transfer type lead switches 14 and 15 which sense the magnetic flux of the magnet 16 and perform the DC inversion switching operation are respectively connected in series to both poles of the direct current. The lead switches 14 and 15 are fixed on the substrate 26, the switching wiring is laid out on the substrate, and the input power supply terminal block and the output terminal block to the exciting coil are also arranged. The coil lead wires 3 and 6 are drawn out at the bottom of the coil yoke 1 where the exciting coil 2 is loaded, that is, the groove space at both ends of the case, and the ON-OFF temperature sensor 10 is put in series with the circuit. The lead wire 3 from the sensor 10 is connected to the sensor control unit case terminal board 18 together with the other coil lead wire 6. The coil yoke bottoms on both sides are fastened to the object or the like with screws 34 by mounting brackets / heat sinks 31 for fixing the main unit.

  FIG. 3 is a front view of the main body apparatus in which a control circuit unit is housed in a separate unit case in a main body apparatus having a swinger in which magnets are attached to both sides of a back yoke to form a magnet yoke. The heat of the coil yoke 1 that generates heat is effectively diverged and cooled by the radiator 31 integrated with the main body fixing bracket. Since the heat radiator 31 can freely extend in the axial direction, that is, the width, it is easy to take measures against heat generation by a load. FIG. 4 is a side cross-sectional view of the main body with another unit case removed. In order to further reduce the size and improve the maintainability, all the control circuit units are housed in a separate case unit 23 so that they can be attached and detached. FIG. 5 shows a front view of the unit 23, in which two lead switches 14 and 15 which are sensitive to the magnetic flux of the sensing magnet are arranged in parallel so that the DC power supply amphopolar reversal can be performed by a pair of rocker levers. Yes. The lead switches 14 and 15 are wired in series with the temporary positive circuit and the negative circuit. Also, a sensing magnet 16 attached to the middle part of the swinging part has a part of the face, and a magnetic flux magnetic field between the lead switches 14 and 15 can be accurately detected and adjusted such as permalloy. A sheet-like magnetic flux magnetic field cutoff adjusting sheet 30 made of a material is disposed. The lead switches 14 and 15 detect the movement of the magnetic flux of the sensing magnet 16 fixed to the intermediate portion of the rocker lever 12 which is moved by being pushed by the swinging element 9, and switches the positive and negative poles alternately.

FIG. 6 is a side sectional view of the control unit. Excitation coil lead terminal blocks 18 are attached to both case sides, and a source power terminal block 19 is formed from the middle. Further, a changeover switch 21 is arranged so that both a DC power supply and an alternating AC power supply can be used, and the LED lamp 22 is arranged in the vicinity of the center of the board so that an alarm blinks when the coil yoke has an abnormal temperature. The slider plate made of a thin plate resin material or the like having a good sliding property is disposed as a sliding guide, and a rocker lever is in contact with the slider 25 with an appropriate pressure between the lower body case. And adjusted to operate with the displacement force of the swinging element 9. The rocker lever 12 has a case structure that can be replaced when the moving distance of the slider is adjusted or worn, and the case can be easily detached with the screw 20. FIG. 7 is a rear view of the control unit case, and the rear surface is configured to be along the side surface of the main body case. The central opening 37 is formed with two rocker lever arm insertion narrow grooves, and screw holes for fixing the case are provided at both ends.

FIG. 8-1 is an explanatory diagram of magnetization of a single permanent magnet. FIG. 8-2 is an explanatory diagram of a magnetic circuit of a single magnet swinger of the present apparatus, illustrating a magnetic circuit and a magnetic flux magnetic field that can be attracted and repelled by a single permanent magnet. A ring-shaped disc magnet is formed with magnetic poles in the circumferential direction, and is caused to reciprocate by facing a coil yoke alternating magnetic flux magnetic field. Although it is suitable for small devices because the swinging element can be lightened, it is easily affected by fluctuations in the magnetic field of the coil yoke. FIG. 9A is an explanatory diagram of a magnetic circuit and a magnetic flux magnetic field of a magnet yoke composite magnet of this apparatus. FIG. 9-2 illustrates the arrangement of the magnetic pole magnetic flux in which the permanent magnet is fixed to the back yoke. A magnetic field with a back-yoke type swing that can be constructed by magnetizing a permanent magnet on both sides and adhering the magnetic flux in the thickness direction, or by adhering multiple magnets magnetized in the same thickness direction. Is suitable for large structures. In addition, a strong magnetic field can be configured which is not easily affected by the changing magnetic field magnetic flux. A magnet is bonded to the back yoke, but the same pole is fixed on both sides, and the same magnetic pole is generated on both sides of the back yoke. If the coil yoke magnetic pole is changed, a double pole configuration can be made on both sides of the swing outer ring. However, as a result of the experiment, the poles on both sides of the outer ring are formed with the same magnetic pole level and power is increased. Adopted. Further, the gap between the magnet and the back yoke outer ring is about 15% of the inner diameter of the back yoke, and the magnetic field forming sphere is constructed symmetrically with the coil generation variable magnetic field sphere. This increases the repulsive suction force of the swinging element and improves the efficiency. FIG. 10 is a basic block diagram of an electric circuit of the apparatus. It is a basic circuit and it is necessary to add a protection circuit and a noise prevention circuit as necessary. In addition to magnetic flux sensing, the moving position sensing method can be sensed in a non-contact manner such as a hall element or photo sensing, and speed control or power control can be devised and applied to DC motor forward / reverse circuits and control mechanisms. Easy to do.

  The device of the present invention is a simple plunger for general industries, its long life and simple structure, various pump drive devices, vibration, linear drive, household appliances and toys, etc. Compactness, high control performance, simplicity, etc. Will be widely applied in the future.

Side view of the main unit Side sectional view of the main unit Front view of control unit exchangeable main unit Side and partial cross-sectional view of control unit replaceable main unit Control unit case top view and partial sectional view Side view of control unit case Control unit case rear view Single-magnet magnetic rotor magnetic circuit explanatory diagram Composite magnet swaying magnetic circuit explanatory diagram Electrical circuit block diagram

Explanation of symbols

1 --- Coil yoke 2 --- Excitation coil 3 --- Excitation coil lead wire Temporary positive electrode side 4 --- Swinger shaft 5 --- Bearing and spring seat 6 --- Excitation coil lead Wire temporary negative electrode side 7 --- Outer case 8 --- Compression spring 9 --- Swinger / Permanent magnet 10 --- Temperature sensor--
11 --- Inner case 12 --- Rocker lever
13 --- Rocker lever arm 14 --- Lead switch for temporary positive circuit 15 --- Lead switch for temporary negative circuit 16 --- Sensing magnet 17 --- Arm buffer Rubber 18-1 --- Excitation coil lead wire fixed terminal block for temporary positive electrode 18-2 --- Excitation coil lead wire fixed terminal block for temporary negative electrode 19 --- Power source lead wire fixed terminal block 20 --- Control unit case fixing screw 21 --- Power source switch 22 --- Lamp 23 --- Control unit 24 --- Rocker arm opening 25 --- Slider sheet 26 --- Control board 27 --- Swing back yoke 28 --- Ring-shaped permanent magnet (up and down magnetization in the thickness direction)
29 --- Back yoke 30 --- Magnetic flux cutoff adjustment sheet (Permalloy)
31 --- Fixing bracket and radiator 32 --- Radiator fixing screw 33 --- Radiation fin 34 --- Main unit fixing screw 35 --- Vibration isolation rubber 36 --- Power source 37 --- Rocker lever arm slot (on back of control unit)

Claims (5)

  Two coil yokes, in which an exciting coil wound in an annular shape, is inserted and fixed in a cylindrical concave container made of an electromagnetic soft iron material with a through-shaft hole in the center, are fixed to the cylindrical case with the opening surfaces facing each other at a predetermined interval. Disc-shaped back yokes made of a steel material that induces magnetic flux by using two disc-shaped permanent magnets magnetized in the circumferential direction in the middle as a single rotor or two ring-shaped magnets magnetized in the thickness direction A magnetic yoke having a structure for inducing the magnetic pole magnetic flux so that the magnetic yoke is bonded and fixed to the coil yoke, that is, a coil yoke that forms a magnetic flux magnetic field so that the swinging element moves in the same direction. A shaft, which is arranged and fastened and integrated with a screw or the like from the center of the oscillator, extends out of the case. The compression springs inserted on both sides of the shaft are spring seats that also serve as bearings provided in the middle part of the coil yoke shaft hole, and the swinger is held at an intermediate position between the left and right coil yokes. A sensor by non-contact means that senses the position of the swing element on the surface of the case is placed symmetrically with the swing element in between, and is provided in the case or outside of the apparatus based on the detection signal. By reversing the positive / negative polarity of the direct current that flows through the exciting coil in the control circuit and moving the swinging element in the opposite coil yoke direction, the reciprocating movement of the swinging element or the shaft integrally coupled with the swinging element is performed. Reciprocating linear drive device with direct current that can be made.   In the reciprocating linear drive device according to the first aspect, the disc-shaped swinging member that swings between the coil yokes raises a ridge of the thickness and height of the magnet that fixes the outer periphery on both sides, and has a shaft hole at the center. The center of the ring-shaped permanent magnet magnetized in the thickness direction is aligned with the steel yoke formed of steel material that has been processed symmetrically, and the both sides of the yoke are bonded and fixed with the same magnetic pole surface. At least 10 of the inner diameter of the swing yoke is used to induce a counter electrode in the rod and to react with the coil yoke side generated magnetic field magnetosphere facing the space gap between the outer periphery of the magnet and the inner periphery of the yoke. Reciprocating linear drive device characterized in that an effective relative magnetic field can be formed by providing a gap of at least%.   2. The reciprocating linear drive device according to claim 1 or 2, wherein the coil yoke and the swing mechanism are built in the first cylindrical case, and the oscillator is mounted on the surface of the first case cylinder. A thin plate or rod-like rocker lever with a magnet fixed to an intermediate portion reciprocating along the narrow groove is disposed at the middle position between the left and right coil yokes so as to sandwich the lever. The arm is protruded in the inner diameter direction from both ends or a predetermined intermediate position to a length that can be pushed by the swaying element, and a lead switch is arranged directly above the intermediate magnet or in the magnetic flux detection range. By the operation, a mechanism for reversing the positive and negative polarity of the direct current to the exciting coil, and the lever intermediate magnet is formed in a protruding shape so that the position can be reversed similarly to the detection of the position by mechanical means such as a micro switch, These mechanisms are connected to the first cylindrical case. Second bristle - reciprocating linear drive, characterized in that the device of matches between the scan.   4. The reciprocating linear drive device according to claim 3, wherein a lead switch provided in each of the positive and negative circuits is provided directly above the sensing magnet provided in the middle part of the pair of rocker levers or within the magnetic field effect thereof. Rocker lever, sensor switch control circuit, power supply terminal, or a circuit in which they are integrated, including two micro switches arranged in parallel, or a micro switch that senses and operates by a protrusion provided in the middle part of the rocker lever A reciprocating linear drive device characterized in that the substrate unit is housed in a separate case and can be mounted and replaced on the main body case by a fastening means such as a screw.   In the DC power supply reciprocating linear drive device according to any one of the first, second, third, and fourth items, the input power source can be adapted to operate with alternating alternating amplification currents such as alternating current and music signals. A reciprocating linear drive device characterized in that a DC power source polarity reversing circuit can be separated via a switching means and the fluctuation amplification current can be applied directly to an electromagnetic coil of a coil yoke to reciprocate.

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