JP2006325381A - Reciprocating linear engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a reciprocating linear engine that intensifies a drive force without enlarging a device size, can achieve drive in a frequency range from a low frequency band to a high wavelength, eliminates the ripple and mechanical noise of a spring or the like, and has a strong drive force, quietness, and high reliability. <P>SOLUTION: In this reciprocating linear engine, annular magnets 3 fixed to the shaft 1 are symmetrically arranged at both sides of an annular exciting coil 7 that comprises a hollow-iron-core bare yoke 4 having a mechanical wavelength filtering effect in such a way as to be capable of performing sensitive operation in the frequency range from the low frequency band to a middle low frequency, and a magnet repulsion mechanism is constituted that reverses the excitation polarity of the exciting coil 7 to move the magnets reciprocally. Magnetic force spring magnets 2 arranged at both sides in a casing 8 constitute a magnetic force repulsion spring mechanism utilizing the magnetic repulsion of permanent magnets with each other. Furthermore, a drive shaft force is sharply increased by constituting a multiple-step unit in which a plurality of the exciting coils 7 and the magnet repulsion mechanism are structured. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a linear engine drive mechanism that can reciprocate within a predetermined distance in the axial direction, rather than a generally known shaft rotation device such as a motor. Amplified current of about 400Hz or less AC alternating signal or acoustic signal generated in the same case or in another device, composite wavelength signal arranged for various usage purposes, or pseudo alternating current generated by DC positive / negative polarity switching mechanism Is applied to an exciting coil of the apparatus, and the shaft reciprocates left and right. In other words, an exciting coil wound in a donut shape is wound around a hollow iron core, and a mechanism that applies the attractive repulsion action of a ring-shaped magnet that reacts to the magnetic field generated on both sides of the iron core yoke. A plurality of combination mechanisms are configured to form a multi-stage unit device. In other words, if either the magnet or the exciting coil is fixed to the shaft as a rocker, the other is fixed to the main body case as a stator, and a piston or diaphragm valve mechanism is added directly to the shaft shaft end extended to the outside of the case, various pumps -It can be used as a drive source in place of a compressor motor, and can be applied to various vibrators by adding a weight as a solenoid valve drive device or plunger drive source.

  Conventionally, products similar to this type include various plungers as automotive functional parts, devices that perform a linear operation by configuring a cam mechanism on a rotary motor, and electromagnetic repulsion hand massagers that use an AC 100V power source. It doesn't let you. However, the existing plunger device is not suitable for high-speed continuous operation as a linear drive source, and the application of the rotating device requires a mechanism such as a cam, and the electromagnetic linear vibrator is also limited to AC 100 V 50 Hz or 60 Hz. Also, recently developed devices with direct linear operation require a device that increases or decreases the voltage / current capacity or frequency with a controller in order to increase or decrease the driving force. However, if the stroke is increased to a few millimeters, heat generation, coil or spring Since the stress limit is exceeded, there is a problem in durability. When a strong shaft driving force is required, a large current is passed to increase the winding diameter, so that the coil is further filtered to a low frequency region, causing a piston motion of about 20-30 Hz and generating pulsation. When used as a driving force for a high-efficiency air pump or refrigeration compressor, a mechanism device that can take a stroke at as high a frequency as possible is required.

  The problem to be solved is to obtain large energy without changing the size of the device much. Another object is to reduce the number of mechanical life limit members such as springs as much as possible in order to obtain a long-life device. Also, if it is driven with large power and downsized, heat dissipation becomes a problem, and a solution is also required. By increasing the magnet magnetic force and the coil size, the current value can be increased and the shaft driving force can be increased, but naturally the entire apparatus also becomes larger and the current and voltage increase. Furthermore, when used for a freezer / refrigerator compressor, quieter and higher durability is required, so use of a compression spring or the like that can be operated at a high frequency and is a mechanical fatigue member is undesirable from the viewpoint of maintenance.

  In order to achieve the above object, a reciprocating linear engine device according to the invention of claim 1 is one in which either an exciting coil or a magnet is a stator and one is fixed to a shaft to form a rocker. It is an invention relating to a plurality of driving force enhancing devices. When the excitation coil is fixed to a case, etc., and used as a fixed operating body, a heat dissipation ring such as aluminum with a heat dissipation hole is attached to the outer ring of the excitation coil and fixed to the case or directly to the case. A hollow iron core is fitted into the hole to provide a function as a shaft bearing, and the flange is raised so as to hold down the coil. Machining dimensions are formed to match the central zone. A ring-shaped magnet magnetized in the vertical thickness axis direction and formed of rare earth metal etc. is inserted into the shaft and fixed with fastening means such as an adhesive or retaining ring, and the excitation coil is sandwiched and placed at symmetrical positions on both sides of the stroke. Use a rocker. However, the magnetic pole arrangement of the magnet is a facing arrangement structure in which one side is attracted to the magnetic field of the exciting coil generated by an alternating current and the other side is repulsive, and the shaft oscillator is arranged to operate in the same direction. The same applies to the case where the ring magnet is fixed to the case as a stator. However, the exciting coil is fixed to the swing shaft, so that the structure is forcibly cooled by air. Even when a plurality of magnetic repulsion drive units are configured to suppress noise and to reduce the number of mechanical members as much as possible, the coil springs are arranged only on both sides of the case, and the magnets that are the oscillators are placed at intermediate positions when not energized. The structure is such that the coil springs arranged at both ends on the outside can be easily replaced from the outside. As described above, when an alternating current is applied to the exciting coil, the single or plural oscillators react with the fixed operating body, and the shaft performs a reciprocating motion with a high shaft driving force synchronized with the energizing frequency to the left and right. Vibration can be generated as a linear drive source of various devices such as an air compressor connected to the extended shaft, or as various vibration devices by a weight added to the tip of the shaft.

  In the reciprocating linear engine device according to the second aspect of the present invention, when the magnet is fixed to the shaft and the oscillator is used as the oscillator, the case-side oscillator magnet single-sided magnetic pole opposite to the exciting coil side is idle. A magnetic repulsive spring mechanism structure in which a ring magnet is centrally located so that it can pass through the shaft, is fixed on one side, and a coil spring or the like is unnecessary, similar to an oscillator arranged to respond to the magnetic field of the magnetic pole of the moving magnet. When the apparatus size is large, a plurality of magnets may be arranged and fixed in a radial pattern by bonding or the like on the inner wall of the case lid so as to correspond to the magnetic pole magnetic field of the oscillator. Even when the exciting coil is an oscillator, a magnet can be fixed to the end of the shaft, and the magnet can be fixed to the inner wall of the case lid facing the opposite face to form a magnetic repulsion spring structure.

  In the reciprocating linear engine according to claim 3 of the present invention, when a plurality of combination units of excitation coils and shaft magnets are arranged for the purpose of increasing driving force, it is necessary to take measures against heat radiation. For this reason, forced air cooling is possible by reciprocating the exciter coil on the shaft and moving it as an oscillator, but it is necessary to supply power to the oscillator exciter coil, which is the operating body within the swing distance, and the brush-type supply terminal is removed from the case. The positive and negative power receiving terminals formed on the surface of the shaft near the position opposite to the start-up shaft drive side can be contacted from both sides, and the electrode distance is set as the range of movement of the oscillator, that is, the oscillator collides with the stator. The limit distance is set so that power can be supplied directly from the motion shaft to the exciting coil.

  According to the first aspect of the present invention, since the magnetic circuit is arranged in a well-balanced manner, the spring for the purpose of holding the shaft intermediately and for the purpose of preventing the collision has the disadvantage of causing a loss of driving energy. The driving force can be increased. In both the single magnetic repulsion mechanism and the multistage mechanism, the balance coil springs need only be arranged at both ends of the case, so that they can be easily replaced and the noise performance can be improved. Furthermore, since the configuration is made up of only a plurality of excitation coils and a magnet mechanism in which the necessary driving force is coupled in multiple stages in the axial direction without increasing the size of the excitation coil, the apparatus can be miniaturized and the power consumption can be reduced. Since either the exciting coil or the magnet can be fixed according to the purpose, the structure can be reduced in size, reduced in current consumption, and reduced in number of parts.

  According to the invention of claim 2, since the mechanical structure is operated by the magnetic spring using the magnetic magnetic flux which is idle instead of the coil spring or the leaf spring which is the mechanical fatigue member, the mechanical fatigue member such as the coil spring is provided. No noise, no noise, and the product life has been greatly extended and the reliability increased.

  According to the invention of claim 3, since the exciting coil is a rocker, the exciting coil can be forcibly cooled, the efficiency is increased, and the length of the power receiving terminal is set to the operation limit. Collision can be prevented, and it is possible to prevent crashing damage caused by excessive current to the exciting coil or sudden projecting signal current.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a side sectional view of the main unit of the reciprocating linear engine according to the present invention, in which both sides of a cylindrical case 8 formed of metal or resin are closed with a lid, and a drive shaft 1 extends outward from both ends of a central shaft hole. A ring-shaped magnet 3 processed with a rare earth metal is arranged on both sides of the shaft with an excitation coil 7 interposed therebetween, and the excitation coil 7 is fixed to a case 8 via a heat dissipation ring 11 with an adhesive. A power input terminal 5 of the exciting coil is provided outside the case 8 and wired to an external dedicated amplifier. The magnet is fixed to the retaining ring 10 with an adhesive. The second magnet 2 of the magnetic spring mechanism is fixed to the inner walls of the case lids 12 so as to face the magnet magnetic field of the oscillator and always hold the shaft oscillator in the middle. A hollow iron core is inserted and fitted into the central shaft hole of the exciting coil, and the generated magnetic field magnetic flux is further extended to a position that matches the magnetic field flux sphere of the facing magnet 2 to function as a yoke. The hollow iron core 4 also serves as a shaft bearing mechanism and smoothly holds and swings the shaft together with the resin bearings 9 at both ends of the case. When an alternating current is applied to the exciting coil, the magnets as the left and right oscillators are attracted on one side and repelled on the opposite side so that the shaft moves in the same direction. Since the magnet magnetic pole fixed to the case both ends lid is fixed to the outside of the oscillator so that it is always placed in a repulsive state, it is fixed so as to face the magnetic pole of the facing magnet. The structure is maintained in an intermediate holding state, and the squeak noise and mechanical wear of the spring are small. FIG. 1 shows the orientation of magnetic poles. The polarity of the exciting coil is the polarity at the time of initial setting, and the polarity is inverted when energized. FIG. 2 is a front view of the apparatus shown in FIG.

  FIG. 3 shows a multi-stage excitation coil mechanism for increasing the axial driving force of the single excitation coil structure of FIG. 1, which is almost the same as the basic structure of FIG. 1, but increases the axial force by about three times. In order to clearly indicate the operation direction, the magnetic pole direction is shown in the drawing, and the initial operation direction is indicated by an arrow. In order to adjust the impedance of the exciting coil 7, the connection between the coils can be changed as necessary. FIG. 4 shows a magnetic spring mechanism in the case of FIG. 1, which is composed of a single ring-shaped magnet 2. In this embodiment, the disk-shaped magnets 2 are arranged in a radial pattern around the shaft shaft hole and are more powerful magnetic springs. As a repulsive force.

  FIG. 5 shows a reciprocating linear engine apparatus having a structure in which an exciting coil 7 is fixed to a shaft as a swing and a magnet is fixed to a case 8. A coil spring 15 that holds the oscillator in the middle is disposed on the inner wall portions 12 on both sides of the case lid, and the exciting coil 7 raises the flange 19 toward the outer peripheral direction so as to correspond to the magnetic flux field of the magnet 3 facing each other. It has a yoke structure. The yoke 4 secures a guide path for the power supply lead wire 18 wired from the exciting coil 7 to the shaft 1. Since the magnet 13 is a thin ring disk and cannot secure a space for a mechanism such as a bearing, the magnet 13 has a structure that supports the shaft load at two bearings 9 at both ends of the case. A lead wire 18 drawn out and wired from the exciting coil 7 is embedded in the shaft 1 in a narrow groove 17 extending from the axial direction to the energizing brush mechanism portion, and is connected to a power receiving terminal plate bipolar circuit 21 of the energizing brush portion. The brush electrode terminal 20 raised from the case lid portion is in contact with the surface power receiving portion 21 of the shaft 1 at a predetermined pressure so as to be sandwiched from both sides. Further, the case bearing portion on the shaft driving side is processed with a groove stopper 16 so that the shaft does not rotate, so that the power receiving terminal 21 is prevented from being detached from the brush lead terminal 20 due to natural rotation of the shaft. FIG. 6 is a front view of the apparatus, and the power input terminal 5 extends from the case lid. The case is fixed by lid claw 22 by press working. FIG. 7 is a circuit block diagram of this apparatus. FIG. 8 is a diagram for explaining the operation contents of the reciprocating linear engine device and its application product list. Hereinafter, specific product application examples of Example 1 and Example 2 will be described.

  FIG. 9 shows a vibration device in which spherical weights 35 are attached to both ends of a shaft of the device having the mechanism of FIG. 1, and a small device can be incorporated into a cellular phone board or the like. In this embodiment, as an independent device, an external amplifying device 26 takes in a signal from a music player 28 such as a CD or MD, a mobile phone 31 or an Internet personal computer 30 and amplifies it to a predetermined current to operate the main body driving device 8. The massage head 36 has a shape matched to each part of the human body or an acupressure shape. Further, the spherical weight 35 can be dispensed with when the shaft is fixed because the main body device becomes a weight.

  FIG. 10 shows an application example of the multi-stage magnetic repulsion mechanism device of FIG. 5, in which a case in which a rechargeable battery 25 is incorporated is arranged at the bottom of the device, a DC power supply polarity reversal switcher energizing mechanism 24 is incorporated, and an air pump mechanism 33 is incorporated at the tip. It is a device that discharges compressed air from a hole 37.

  Since the device of the present invention has an operation function as a vibration source, a reciprocating drive source, an alarm buzzer or a position positioner, it can be operated as long as it is a continuous electric amplification signal in a low frequency band, and the main shaft is not fixed to the resonance plate. If it is pressure-bonded, it can vibrate to a mid-range wavelength of 400 Hz or more, so that an alarm sound can be taken out, and the purpose as an alarm device can be fulfilled at the same time as a reciprocating drive source or vibration source. In the case of a minute signal, the excitation coil is applied and energized via a current amplifier, but in the case of an AC voltage, if it is used as it is or if it is dropped to a predetermined voltage using a step-down transformer, vibration or oscillation drive of 50 Hz to 60 Hz can be obtained. It can be used for machine tools and general-purpose air pumps and compressors. For higher performance and quieter air pumps and compressor applications, it has a multi-stage multiple magnetic circuit mechanism configuration and is driven at a high driving frequency. Furthermore, if a method of alternately switching the positive and negative polarity by using a direct current as a pseudo-alternating current is suitable for use in a dry cell or battery-powered portable type or a place where it is difficult to use normal power, a personal massage device or It can be applied to medical devices such as portable air pumps and emergency resuscitators. In addition, in personal computers using the Internet, the information signals diagnosed or distributed on the homepages of medical institutions, music distribution institutions, movie / anime distribution institutions, etc. are energized and operated via speaker amplifiers or SUB signals via dedicated amplifiers. Various personalized electroencephalographic control vibrations for relaxation, hypnosis and memory enhancement can also be used as massage signals, body acoustic vibrations and simulator signals. In order to use it as a drive source for industrial equipment, such as electric hammers, jigsaws, pumps, electric engravers, and parts conveying devices, the signal wavelengths and oscillation distances required for each machine are required as signal sources. Many product developments are possible by incorporating a system configuration that operates with signal generators and their amplifiers built into individual mechanical devices. FIG. 8 shows the application list.

The side sectional view and magnetic pole arrangement figure of the reciprocating linear engine device concerning a first embodiment. The front view of the reciprocating linear engine apparatus concerning 1st embodiment. Side surface sectional drawing and magnetic pole arrangement | positioning figure of the reciprocating linear engine apparatus concerning 2nd embodiment. The front view of the reciprocating linear engine apparatus concerning 2nd embodiment. The side view sectional drawing and electrical wiring diagram of the reciprocating linear engine apparatus concerning 3rd embodiment. The front view of the reciprocating linear engine apparatus concerning 3rd embodiment. The electric circuit block diagram of a reciprocating linear engine apparatus. Use operation contents of the reciprocating linear engine device and its application product list explanatory diagram. The external view of the massager of Example 1 incorporating a reciprocating linear engine device. The external view of the air pump of Example 2 incorporating a reciprocating linear engine device.

Explanation of symbols

1 −−− Shaft 2−− Magnetic spring magnet 3−− Oscillator magnet 4 −−− Coil yoke (bearing)
5 --- Coil input power supply terminal +
6 --- Power source 7 --- Excitation coil 8 --- Main unit case 9 --- Case bearing 10 --- Retaining ring 11 --- Heat dissipation ring (ring)
12 --- Case lid 13 --- Magnet (stator)
14 --- Magnet fixing base 15 --- Coil spring 16 --- Stopper groove (rotating shaft stop)
17 --- Groove (excitation coil crossover wiring)
18 --- Power supply wire 19 --- Yoke rod 20 --- Brush electrode terminal 21 --- Slide power receiving terminal 22 --- Case lid fixing claw 23 --- AC voltage controller 24 --- DC electrode reversing switcher 25 --- Battery 26 --- Amplifier 27 --- Frequency Signal Generator 28 --- Amusement Simulator 29 --- Various Industrial Machines 30 --- Internet Personal Computer 31 --- Mobile Phone 32 --- Acoustic signal 33 --- air pump 34 --- each human body part 35 --- weight 36 --- massage head 37 --- pump discharge hole

Claims (3)

  The magnetic pole magnetic flux of the permanent magnet is attracted by applying and energizing a frequency signal such as a rectangular wave or sine wave, an acoustic signal, etc. to the exciting coil, or by a pseudo alternating current generated by the reversal energizing mechanism of the positive and negative of the DC power supply In the repulsive electromagnetic circuit mechanism, both are arranged so that the central sphere of the magnetic field flux of the ring magnet matches the central sphere of the magnetic field flux sphere of the donut-shaped excitation coil, and electromagnetic soft iron or the like is placed in the central axis hole of the excitation coil. Fitting the ring-shaped yoke formed in the above, and further raising the pole of the magnetic field adjustment to induce magnetic flux so that it matches the magnetic field of the magnetic field accurately, either the magnet or either side of the exciting coil is bonded to the shaft or the retaining ring is fastened The outer ring of the outer ring on the other side is fixed to the case in the same manner as the stator, and the stator is fixed on the shafts at predetermined positions on both sides. A magnet and a pair of excitation coils having a magnetic pole magnetic field arrangement in which a moving element is symmetrically arranged and an exciting magnetic field is applied to one side and a repulsive magnetic field is formed on the other side, and the oscillator shaft moves in the same direction. A reciprocating linear engine characterized in that the body is one unit and one or a plurality of units are arranged in the same case to swing and the shaft end is extended from one side or both sides of the case to the outside as a drive shaft.   In the mechanism in which a magnet is fixed to a shaft as a swinging element of the reciprocating linear engine according to the first aspect, a collision prevention and repulsion is provided at an intermediate portion between the swinging magnet and the case cover having a bearing mechanism. As an alternative to coil springs or leaf springs, a single ring magnet or a plurality of magnets that are inserted through the shaft in the center so as to repel the magnetic pole magnetic flux of the oscillator magnet are fixed in a radial pattern with respect to the shaft shaft hole. A reciprocating linear engine characterized by being provided at both ends of the case as a repulsive spring mechanism.   In the reciprocating linear engine according to the first and second aspects, a ring-shaped magnet is fixed to a predetermined position on the inner wall of the case as an oscillating element, and an exciting coil is fixed to the shaft at a predetermined interval and is opposed to the stator. A magnetic repulsive suction mechanism is formed to form a single or multiple unit, and the energization lead wire of the exciting coil is housed in an elongated groove formed in the shaft axis direction, etc. The shaft outer surface near the tip of the shaft opposite to the drive shaft is almost bisected Conductive brush terminals raised from the case side are arranged on both sides of the power receiving terminal board that is insulated so that the two power receiving terminal boards are sandwiched between the positive and ground side power receiving terminal boards. The electrode is arranged according to the polarity of the power receiving terminal, and the structure is such that the power can be supplied by contacting the power receiving terminal of the shaft that always swings at a constant pressure. Reciprocating linear engine is characterized in that rocker is sized to not collide with the stator.

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