WO2008148305A1 - Linear motor and field magnet member thereof - Google Patents

Abstract

A linear motor and the field magnet member thereof. The linear motor includes: a field magnet member including multiple magnetic assemblies arranged along the moving path, each magnetic assembly has two magnetic poles formed by two permanent magnets(12, 12b, 121a, 121b, 122a), the two magnetic poles have reverse magnetic polarities and corresponding polar-faces in a first and second direction, the adjacent permanent magnets(12, 12b, 121a, 121b, 122a) arranged along the moving path are separated by gaps and are magnetically isolated; an armature member holding by the magnetic assemblies at least partially.

Description

 Field magnet members for linear and linear motors

(1) Technical field

 The present invention relates to a motor, and more particularly to a linear motor and field magnet members of the linear motor, and more particularly to a plurality of permanent magnet-containing magnetic components and armature members of a field magnet member of a permanent magnet linear motor. Electromagnetic interaction between the magnetically isolated coil-containing electromagnet components reduces the extra torque of the electromagnetic force interacting with the vertical direction of movement.

(2) Background technology

 For a general-purpose rotating electrical machine, regardless of the operation of a DC motor or an AC motor, the magnetic principle of magnetic pole homosexual repulsive and opposite-phase attracting is adopted between the rotor and the stator. In the early days, linear forces were often achieved by a rotating motor and a mechanical converter. However, such a system has a disadvantage of high manufacturing cost and high maintenance cost due to complicated construction; and, because of the additional loss caused by the conversion device, the efficiency of the system is lowered and the output torque is reduced.

 System simplification and system efficiency increase due to the linear motor directly producing a linear force without any force conversion device. In order to generate a linear force, the stator and rotor of the rotating machine are replaced by the stator and mover of the linear motor, but the principle of operation is the same. For a linear force, a conventional linear motor developed from the level of construction of a rotating electrical machine has a simple construction because the linear motor directly produces a linear force without passing through any switching device.

 In the early conventional linear motors, since the magnetic force between the stator and the mover was generally unidirectional, an undesired additional force perpendicular to the moving direction was applied to the mover support mechanism, which not only affected the driving force, At the same time, an additional burden is imposed on the mover support mechanism.

 In order to provide greater linear force and prevent the mover support mechanism from being distorted due to the unidirectional magnetic force, the stator of a conventional permanent magnet linear motor has magnetic poles formed by pairs of magnets facing each other and having opposite magnetism. The pair of opposite magnetic magnets move in space to reduce the additional burden on the mover support mechanism. However, in the structure of the conventional permanent magnet linear motor, there is leakage magnetic flux above the magnetic pole of the magnet, and the magnetic flux concentration of the magnetic pole of the magnet is affected by the magnetic pole adjacent to the magnet.

 Figures 10A and 10B are prior art illustrations showing the arrangement of certain subfield magnets in a conventional permanent magnet linear motor. Figure 10A is a perspective view of a conventional stator in a conventional permanent magnet linear motor; and Figure 10B is a front cross-sectional view of a conventional stator in a conventional permanent magnet linear motor. As shown in FIGS. 10A and 10B, in the linear motor, a plurality of field magnets 1 having a pair of opposite magnetic bodies facing each other and arranged in the moving direction on the stator are placed on the fixed strip 5, which is fixed in strip shape The material is usually made of a ferromagnetic material; the armature (not shown) placed in the stator magnet is composed of a plurality of coils having a conductor connecting the current, and the coil current is established when the coil current of the armature is excited. The electromagnetic field interacts with the magnetic field of the pair of field magnets to cause the armature to move within the space between the pair of oppositely magnetic field magnets. Wherein, along the direction of movement of the armature, a plurality of permanent magnets of the stator are generally arranged equidistantly with equidistant magnetic pole polarity; and by providing armature current as power, the pair of opposite magnetic fields of the armature relative to the stator The magnet moves. However, the adjacent field magnet poles of the linear motor along the moving direction affect the magnetic flux concentration of the field magnet poles.

 Although, in the conventional permanent magnet linear motor, the iron core armature coil of the linear motor may cause control problems due to the torque, but it can produce a comparison with the armature coil of the linear motor without the iron core.

1

Confirmation Large electromagnetic moment. However, regardless of whether the armature coil of the linear motor contains a core, it can be applied to a servo control system with 髙 response and high precision positioning. Moreover, regardless of whether the armature coil of the permanent magnet type linear motor contains a core; the field magnet member uses a rare earth permanent magnet in order to provide a larger magnetic field, and the strong magnetic field leakage of the rare earth permanent magnet easily affects the surroundings, and it is also necessary to pay attention.

 In U.S. Patent No. 6,791, 222, Maslov et al. teach a rotary electric machine that arranges the magnetic flux switching interference between adjacent coils by the arrangement of separate pairs of electromagnets on the stator, and is arranged in the axial direction. The rotor magnet and stator pole pairs provide a very concentrated flux distribution that allows the flux to be concentrated on a relatively large surface to promote high torque. The sensor is used to detect the relative position of the rotor and the stator. At different times, the coil current on the pole pair of the electromagnet on the stator is conveniently controlled to cause smooth running of the motor.

 In order to obtain a larger total effective air gap surface area, in U.S. Patent No. 6,891,306, Maslov et al. Through the increase in the stator pole surface of the motor and the rotor magnet, the flux distribution is improved by the concentration of the flux to provide a larger flux distribution. The motor configuration provides a larger continuous flux generation path between the rotor and the stator. The construction of the motor architecture further enhances the high torque capability of the motor by increasing the surface area of the rotor poles and the corresponding stator poles through a plurality of air gaps to cause the magnetic flux to concentrate on a relatively larger surface.

 The high efficiency and high torque of the motor have been described in the patent application of the above-mentioned rotating electrical machine by the concentration of the magnetic flux, the utilization of the magnetic flux, the loss of the magnetic flux and the minimization of the switching interference effect. These principles are applied to the linear motor of the present invention, and further gain in the present invention, so that the magnetic flux of the linear motor is concentrated not only on the relatively larger magnetic pole surface, but also because the magnetic pole of the linear motor is considered to be perpendicular to the movement. The geometrical balance in the direction allows the magnetic flux leakage around the linear motor to be reduced and reduces the additional burden placed on the mover support.

(3) Invention content

 SUMMARY OF THE INVENTION It is an object of the present invention to provide a field magnet member of a linear motor and a linear motor that is arranged by a magnet to provide a very concentrated magnetic flux distribution, an additional torque that interacts with the reduced electromagnetic force in the direction of vertical movement, and increases wear. The surface area of the air gap and the corresponding stator poles in the air gap promotes the magnetic flux to concentrate on a relatively larger surface and reduces the magnetic flux leakage of the surrounding environment, further enhancing the linear driving force of the linear motor. '

 To achieve the above object, the present invention provides a linear motor comprising a field magnet member and an armature member including a plurality of coils; and, the linear motor of the present invention is characterized in that the field magnet members are arranged along the moving direction. a plurality of permanent magnet-containing magnetic components forming a joint with a magnetically permeable material, and the foregoing permanent magnets are disposed on an inner side surface of the joint of each of the magnetic components to form two magnetic poles of opposite polarity of the magnetic component, and each of the magnetic components The pole faces of the two permanent magnets are arranged to correspond to each other in the first direction, and each pole face of the two permanent magnet poles of each magnetic component exhibits only a single magnetic field polarity and is opposite to the other pole face The magnetic fields are opposite in polarity, and the permanent magnets adjacent in the moving direction are not only separated by a gap but also magnetically isolated from each other and alternately arranged with a magnetic field polarity N/S. Thus, the permanent magnets on the magnetic assembly reduce the influence of the adjacent field magnets by the magnetic flux return path provided by the yoke function of the magnetic assembly, and by magnetic separation between the adjacent magnetic members in the moving direction. Concentration with improved magnetic pole flux. Moreover, the two magnetic poles of the magnetic components on both sides of the vertical movement direction reduce the additional burden on the mover support mechanism (not shown).

The present invention is characterized in that a plurality of magnetically isolated magnetic members including permanent magnets are used as field magnets for linear motors. Each of the magnetic components including the permanent magnets has two magnetic poles having opposite magnetic field polarities and a coupling seat as a yoke, and the two magnetic pole faces of each magnetic component are arranged in the first direction to have phases The inverse magnetic field polarity is magnetically isolated from each other adjacent to the magnetic component in the direction of movement to reduce the effects of adjacent field magnets and to enhance the concentration of magnetic flux.

 According to another feature of the present invention, each of the permanent magnet-containing magnetic components of the field magnet member of the linear motor has two magnetic poles having opposite magnetic field polarities and a coupling seat as a yoke, and the two magnetic pole faces of each magnetic component are in contact with each other. The first direction is configured to have opposite magnetic field polarities; moreover, the joint portion of each magnetic component is closed around the moving direction, so that the magnetic flux distribution of the two pole faces of the magnetic component of the field magnet member can be More balanced and reduces flux leakage from field magnet members.

 In another embodied feature, each of the permanent magnet-containing magnetic components of the magnetic assembly of the linear motor has two magnetic poles of opposite magnetic field polarity and a coupling seat as a yoke, and two magnetic poles of each magnetic component The faces are configured in each other in the first direction to have opposite magnetic field polarities; moreover, additional permanent magnets are added to the closed joint of each magnetic component to direct the flux return distribution in the bond seat as the yoke, making the magnetic The flux distribution of the two poles of the assembly is further determined and the flux leakage of the field magnet members is further reduced.

 In another feature of the preferred embodiment, each of the permanent magnet-containing magnetic components of the field magnet member has two magnetic poles having opposite magnetic field polarities and a coupling seat as a yoke iron with almost no additional linear motor volume. And the two pole faces of each magnetic component are configured to have opposite magnetic field polarities in the first direction; and, each magnetic pole of the magnetic component adds an additional magnetic pole face to have in the second direction Corresponding pole face. This gain provides almost no additional burden on the mover support mechanism, but concentrates the magnetic flux on a relatively large surface to increase the air gap flux surface area of the linear motor, providing a relatively large torque output of the linear motor.

 In another preferred embodiment, each of the permanent magnet-containing magnetic components of the field magnet member in the linear motor has two magnetic poles having opposite magnetic field polarities and a coupling seat as a yoke, and two magnetic poles of each magnetic component The faces are arranged in the first direction to have opposite magnetic field polarities, and each of the magnetic poles has an additional magnetic pole face corresponding to the second direction; moreover, the magnetic component's joint is closed to make the field magnet member magnetic The flux distribution of the assembly can be improved to be more balanced, and the magnetic flux leakage of the field magnet members is reduced and a relatively larger torque output is provided.

 In a more preferred embodiment, each of the permanent magnet-containing magnetic components of the field magnet members of the linear motor has two magnetic poles having opposite magnetic field polarities and a coupling seat as a yoke, and the two magnetic pole faces of each magnetic component are mutually Configuring in the first direction to have opposite magnetic field polarities, with each pole having an additional pole face in the second direction; moreover, an additional permanent magnet is added to the closed joint of the magnetic assembly to direct the yoke The magnetic flux return distribution in the joint of the iron further determines the magnetic flux distribution of the two magnetic poles of the magnetic assembly and further reduces the magnetic flux leakage of the field magnet members.

 In the embodiment of the various field magnet members described above, the armature member corresponding to the field magnet member includes a plurality of coil-containing electromagnet assemblies that are magnetically isolated and connected to the opposite pole by the magnetically conductive core portion, although The connection of the magnetic core portions to the opposite poles forms an electromagnet that adversely affects the operation of the motor, but when the coils of the electromagnet assembly are energized by current, the core portions of the magnetism are connected to form a counter electrode to provide greater torque, and The arrangement of the separate pairs of electromagnets can handle the effects of flux switching interference between adjacent coils.

In addition, in the foregoing embodiment, in order to correspond to the magnetic component of the field magnet member, the additional magnetic pole face is added to each magnetic pole to have a corresponding magnetic pole face in the second direction, and the plurality of magnetically isolated coil-containing electromagnetic components of the armature member The body assembly, because the core portion having the magnetic permeability is connected to the opposite pole, so that each pole of the pair of poles of the electromagnet assembly can additionally add a pole face in the second direction to increase the magnetic component passing through the air gap The magnetic poles are aligned with the surface area of the corresponding electromagnet assembly to cause the magnetic flux to concentrate on a relatively larger surface, further enhancing the linear driving force of the linear motor. In the foregoing various embodiments, one of the armature members of the linear motor and the field magnet member forms a stator, and the other forms a mover. When the linear motor uses the field magnet member as the mover and the armature member as the stator, the armature coil needs more control circuit and the magnetic flux of the armature coil may leak and is not favorable to the outside; but the linear drive structure is easy. arrangement. Of course, when the linear motor uses the field magnet member as the stator and the armature member as the mover, although the linear drive structure is relatively difficult to arrange, the number of electromagnet assembly components is reduced, and the required control circuit is reduced. And because the plurality of coils of the armature member are contained by the field magnet members, the coil magnetic flux of the linear motor is not easily affected by the surrounding environment.

 This arrangement, because the magnetic flux of the linear motor is improved to be more concentrated and the flux distribution is flatter, and the magnetic flux is concentrated on a relatively larger surface, and the magnetic flux leakage of the surrounding environment is reduced, and the structure of the linear motor is considered. The geometrical improvement, thus reducing the additional torque of the electromagnetic force interacting with the vertical direction of movement, further enhances the linear driving force of the linear motor without adding extra space and weight.

 The present invention is further illustrated and described, and the additional advantages of the present invention will be readily and obviously become readily practiced. While the present invention is being practiced, the invention may be embodied in a variety of other embodiments and various embodiments may be practiced in various embodiments without departing from the scope of the invention. The present invention has been described in terms of various technical matters. Accordingly, the description and drawings of the invention are intended to

(4) Description of the drawings

 1 is an exploded perspective view of a linear motor according to a first embodiment of the present invention.

 Fig. 2 is a combination diagram of a linear motor of a first embodiment of the present invention.

 Fig. 2A is a cross-sectional view showing the linear motor of Fig. 2 taken along line A - A by way of an icon in the first embodiment of the present invention.

 Figure 2B is a partial detailed cross-sectional view of the linear motor of Figure 2 taken along line B - B.

 Figure 3 is a cross-sectional view showing a modification of a second embodiment of the present invention, which is similar to the detailed sectional view of the portion of Figure 2B.

 Fig. 4 is an exploded perspective view showing the structure of a mover of a linear motor according to a third embodiment of the present invention.

 Fig. 4A is an exploded view of the magnetic component of the mover of the third embodiment of the present invention.

 Fig. 4B is a cross-sectional view showing a linear motor of a third embodiment of the present invention by way of an icon.

 Fig. 5 is a combination diagram of a linear motor of a third embodiment of the present invention.

 Figure 6 is a cross-sectional view showing a modified partial structure of a linear motor similar to the structure of Figure 4B, showing a fourth embodiment of the present invention.

 Fig. 7 is a combination diagram of a linear motor of a sixth embodiment of the present invention.

 Fig. 7A is a cross-sectional view showing the linear motor of Fig. 7 in an illustration of a sixth embodiment of the present invention.

 Figure 8 is a cross-sectional view showing a modified splitting structure of a linear motor similar to the foregoing fourth embodiment, in accordance with a seventh embodiment of the present invention.

 Figure 9 is a view showing a modified portion of a linear motor similar to the structure of Figure 6 in a fifth embodiment of the present invention.

 Figure 10A is a perspective view of a conventional stator in a conventional permanent magnet linear motor.

 Figure 10B is a front cross-sectional view of a conventional stator in a conventional permanent magnet linear motor.

 Main component symbol description

1 Field magnet in a conventional linear motor 5 Fixed strips of field magnets in conventional linear motors

 10a, 10b, 10c, 10d, 101, 103b, 102a, 102b field magnet member housings l la, lib, 111, 112, 112b, 113a, 113b, 114 each half of the magnetic assembly joint

12, 12b, 121a, 121b, 122a Bipolar permanent magnets for magnetic components

 13, 13b, 131, 132 additional permanent magnets on both sides of the seat

 31 Electromagnetic core part of the electromagnet assembly

 32, 32b, 321a, 321b, 322a electromagnet assembly is a pole of the opposite pole

 32a Electromagnet assembly is a pair of recesses on each of the four end corners of each pole

 33, 33b coil of electromagnet assembly

 3 electromagnet components

 511 joint piece

 511b joint projection

 511a bonded piece locking assembly

 101a and 101b field magnet member housing lock assembly

 512 armature member mount

 512a armature member holder

 80 magnetic components of the two magnetic poles of the permanent magnets in the first direction of the gap

 81 Clearance between adjacent magnetic components arranged in parallel along the moving direction

 82 Clearance between adjacent stator electromagnet assemblies arranged in parallel along the direction of movement

 70 separating the air gap between the armature member and the field magnet member on opposite sides of the first direction

71 Define two air gaps between the armature member and the field magnet member on both sides of the second direction

(5) Specific implementation methods

 Various embodiments of the present invention will be described in the following icons. In the figures, the parts that are the same as the same reference numerals are used to indicate the components that are the same as the other components.

1 is an exploded perspective view of a linear motor according to a first embodiment of the present invention. A linear motor contains a field magnet member and an armature member. Wherein the field magnet member includes a plurality of magnetic components including permanent magnets each having two magnetic poles arranged along the moving direction, and each of the magnetic components including the permanent magnets has a bonding seat formed of a magnetically permeable material; in the practice of the present invention In the example, for ease of explanation and not limitation, the binding seat of the magnetic component is divided into two halves 11a, 11b which generally have a U shape corresponding to approximately, and the inner side of each U-shaped half of the coupling seat The surface is respectively disposed as a thin U-shaped bipolar permanent magnet 12 as two magnetic poles of the magnetic component, so that each magnetic pole of each magnetic pole of each magnetic component has a U-shaped pole surface; and each U-shaped permanent magnet faces the gas The surface of the gap exhibits only a single magnetic field polarity and is opposite in polarity to the magnetic field of the back surface of the permanent magnet bonded to the inside surface of the magnetic assembly. Each of the U-shaped halves 11a, 10b of each magnetic component's binding seat is disposed in the field magnet member housing 10a, 10b, and the field magnet member housing is combined to place a plurality of permanent magnet-containing magnetic components in the non-magnetic field. Inside the magnet member housings 10a, 10b. The armature member includes a plurality of magnetically isolated electromagnet assemblies 3 having a pair of poles arranged in a moving direction, and each of the U-shaped poles is formed in each of the U-shaped poles of the pair of electromagnet assemblies Each of the four end corners has a recess 32a; each of the upper and lower joints 511, 511, which are combined with the adjacent electromagnet assembly, has a projection 511b on each of its two sides, which is narrowed to The width is wide, and is wider, and is combined with the body of the bonding sheet at a narrower portion; wherein the body of each bonding sheet can be described as a composition of two components, which combines the upper and lower portions. Growing the ends of the strip members, and each side surface on both sides of the joint is combined with a narrow to wide projection 511b; thus, the upper strip member of one bonding sheet can be combined with the other Lower long strips tight The densely adjacent ones are joined so that the holes in the adjacent upper bonding sheets 511 are joined by a conventional fixing manner, and the fixing members 511a and the bosses 512a of the armature member fixing base 512 are shown in the drawings as an example. The armature member is formed by the non-magnetic material of the adjacent electromagnet assembly 3 arranged along the moving direction by closely fitting the protrusions 51 lb on the bonding piece and the grooves 32a on the U-shaped pole of the electromagnet assembly. The bonding sheets 511 are bonded such that each electromagnet assembly of the armature member is in no ferromagnetic contact with each other. The field magnet member is associated with the armature member mount 512 by a linear slide, and the armature member is at least partially contained by the field magnet member magnetic assembly, so that the armature member's electromagnet assembly is paired with each pole and the field magnet One of the two magnetic poles of the member's magnetic component corresponds. In the first embodiment, the armature member acts as a stator and the field magnet member acts as a mover. In fact, the upper bonding piece in the armature member of the linear motor does not differ from the operation of the linear motor of the present invention even if it does not exist.

 Fig. 2 is a combination diagram of the linear motor of the first embodiment, which is suitable for providing power for linear movement.

 Fig. 2A is a cross-sectional view showing the linear motor of Fig. 2 taken along line A - A by way of an icon in the first embodiment of the present invention. In the field magnet member housings 10a, 10b, the inner side surfaces of each of the U-shaped halves 11a, 11b of the coupling seat of each of the magnetic members are respectively disposed with U-shaped permanent magnets 12 whose pole faces face perpendicular to the moving direction, each The U-shaped permanent magnet pole faces only show a single magnetic field polarity and are opposite to the magnetic field polarity of the other permanent magnet pole U-shaped pole face of the same magnetic component; moreover, the two pole faces of each magnetic component are The first direction is configured to correspond to each other, and each of the two pole faces of each of the magnetic components has a corresponding pole face in the second direction, and a permanent magnet on the two magnetic poles of each of the magnetic components The pole faces facing the second direction are separated from each other by a gap 80; wherein the first direction is perpendicular to the moving direction, the second direction is perpendicular to the moving direction and the first direction, and the magnetically conductive material is manufactured. The coupling seat forms a yoke of the magnetic component to serve as a magnetic flux return path of the magnetic poles of the two permanent magnets of the magnetic component, so that the magnetic flux generating torque is concentrated in the magnetic group The ends of the two permanent magnet poles. Each electromagnet assembly of the stator includes a pair of poles connected by a magnetically conductive core portion 31, and a coil 33 is formed on a core portion of the stator electromagnet assembly, and each electromagnet assembly is paired with each pole of the pole 32 each has its own U-shaped pole face; moreover, the armature member is at least partially contained by the field magnet member magnetic component such that the armature member is separated from the field magnet member by an air gap 70 not only on opposite sides of the first direction, Moreover, two air gaps 7.1 between the armature member and the field magnet member are defined on both sides of the second direction. Here, the plurality of electromagnet assemblies arranged in parallel along the moving direction of the armature member are respectively paired with each of the poles 32, one of the two permanent magnet poles 12 of the magnetic component of the field magnet member. Correspondingly, an air gap 70 in the first direction and an air gap 71 in the two second directions are defined at respective poles of the two poles of the electromagnet assembly and the magnetic poles of the magnetic assembly. For the electromagnet assembly of the armature member contained by the magnetic component of the field magnet member, when the coil of the electromagnet assembly is excited, its magnetic flux passes through the electromagnet core portion 31, the pair of poles 32, through the partition armature member The air gap of the field magnet member and the two permanent magnets 12 of the magnetic component of the field magnet member interact with each other electromagnetically. The electromagnet assembly is assembled to the armature member holder 512 by the adjacent lower bonding piece 511; and the holes on the adjacent upper bonding piece 511 are combined by the locking assembly 511a; in the figure, the bonding piece and the armature member are fixed. The material of the seat and the lock assembly can be made of a non-magnetic material such as ceramic, aluminum or stainless steel or the like such that each stator electromagnet assembly is substantially independent of its own flux path. The magnetic field polarities N and S indicated in the figure are merely illustrative of the polarities of the magnetic field as the magnetic pole faces facing the air gap, and are not intended to be limiting.

2B is a partial detailed cross-sectional view of the linear motor of FIG. 2 taken along line B-B. As illustrated in FIGS. 2 and 2B, the magnetic components in the mover are combined with the field magnet member housings 10a, 10b with their coupling seats 11a, 11b, and the inner surfaces of the U-shaped coupling seats 11a, lib of each magnetic assembly are respectively a permanent magnet 12 having magnetic pole faces arranged in a first direction to correspond to each other; a plurality of field magnet members Each magnetic pole of the magnetic component is alternately arranged with magnetic pole polarity N/S in a magnetic pole adjacent to the magnetic component arranged in parallel along the moving direction. The electromagnet assembly 3 of the stator has a core portion 31 to link a pair of poles 32, and is made of a magnetically conductive substance such as Fe, SiFe, SiFeP, SiFeCo, etc.; and a coil 33 is at the core of the electromagnet assembly Formed on 31. Although the gaps 81 between adjacent magnetic components arranged in parallel along the moving direction need not be identical, the gaps 82 between adjacent stator electromagnet assemblies arranged in parallel along the moving direction need not be identical, so as to be properly sensed. The relative position of the mover and the stator is sensed to properly control the respective excitation of the coils on the electromagnet assembly, resulting in magnetization of the corresponding mover electromagnet assembly to drive the mover to provide relative movement relative to the stator. Further, the gap 81 between the adjacent magnetic members arranged in parallel along the moving direction and the gap 82 between the adjacent stator electromagnet assemblies arranged in parallel along the moving direction can be predetermined, making the arrangement of the sensor and the control easy.

 In a linear motor, a sensor or a brush that cooperates with the commutator is placed at an appropriate position to control the coil current of each electromagnet assembly at a suitable time to achieve a smooth output. For example, the relative position of the stator and the mover detected by the perceptron is used as a reaction to properly control the excitation of the coil on the electromagnet assembly, resulting in magnetization of the corresponding armature member electromagnet assembly; and the opposite magnetic field polarity N, S is then generated on the pole faces of the pair of electrodes of the electromagnet. The magnetic flux caused by the excitation of the coil generates a magnetomotive force across the air gap, and interacts with the permanent magnet poles on the field magnet members to drive each other. Mover.

 In all embodiments of the present invention, the coil excitation control of the single electromagnet assembly of the armature member in the first embodiment is exemplified, when the coil of an electromagnet assembly of the armature member is energized by current, The respective pole faces of the two poles of the pair of poles of the electromagnet assembly produce opposite magnetic field polarities, and the polarities generated by the pole faces of each pole are the same. When the N pole of the permanent magnet pole of the field magnet member moves toward the S pole of the magnetic pole of the armature member electromagnet assembly, the S pole of the permanent magnet pole assembly in the first direction also moves to the same electromagnetic The body assembly is paired with the N poles of the magnetic poles such that the permanent magnet poles of the field magnet members are attracted by the stator electromagnet assembly. When the permanent magnet pole of the field magnet member is sucked, so that the armature member electromagnet assembly is included, the current in the coil of the electromagnet assembly is reversed so that the armature member electromagnet assembly is poled to the pole pole of the magnetic pole. Sexuality has also reversed. At this time, the polarity of the magnetic field of the pair of magnetic poles of the armature member electromagnet assembly and the magnet magnet of the permanent magnet of the field magnet member are repelled by the isotropic magnetic pole, so that the permanent magnet pole of the field magnet member is repelled by the armature member electromagnet assembly; At the same time, however, the permanent magnetic poles of the adjacent field magnet members are attracted by the opposite magnetic poles. The above process is repeated, thereby causing the mover to rotate. When the above process is in progress, the permanent magnet poles of the field magnet members are arranged in the first direction to be substantially opposite, because the poles of the field magnet members produce substantially opposite gravitational or repulsive forces in the first direction, and because In the second direction, each pole face of the two poles of the field magnet member has a corresponding pole face that produces a gravitational or repulsive force opposite to each other in the second direction, so that the action between the mover and the stator is perpendicular to the moving direction. Unwanted extra forces can be reduced to reduce an additional burden imposed on the mover support mechanism.

 2B is an embodiment of a three-phase arrangement showing armature members in accordance with the present invention. In the figures, the gaps between adjacent stator electromagnet assemblies arranged in parallel have approximately the same spacing as the gaps adjacent the permanent magnets along the direction of movement, only as an illustrative example and not as a limitation.

Figure 3 is a cross-sectional view showing a modification of a second embodiment of the present invention, which is similar to the detailed sectional view of the portion of Figure 2B. 3 is another embodiment of a three-phase arrangement showing armature members in accordance with the present invention. In order to reduce the control circuit and reduce the possible magnetic flux around the armature coil; Figure 3 linear motor with the field magnet member as the stator, and the armature member as the mover, the relative position of the stator and the mover detected by the sensor In response, the excitation of the coils on the electromagnet assembly is properly controlled to cause magnetization of the corresponding mover electromagnet assembly to drive the mover to provide relative movement relative to the stator. In order to match the field magnet member as a stator of the linear motor, the stator housings 10c, 10d in the second embodiment can be regarded as the first implementation. The field magnet member housing of the field magnet member of the example is extended to accommodate a plurality of magnetic components including permanent magnets each having two magnetic poles arranged in the moving direction. Figure 3 shows the change of the linear motor structure, because the plurality of coils of the armature member are included as the field magnet members of the stator, so that the coil magnetic flux of the linear motor is not easily affected by the surrounding environment; and, due to the armature member electromagnet assembly The reduction in the number also reduces the required control circuitry.

 As exemplified by the first and second embodiments of the present invention, the two pole faces of each magnetic component of the field magnet member of the linear motor are configured not only in the first direction but substantially opposite, and each of the magnetic components Each pole face of the two pole faces has an additional corresponding pole face in the second direction. By magnetically isolating the magnetic components of the field magnet members, the influence of the adjacent field magnets can be reduced and the concentration and magnetic flux distribution of the magnetic pole fluxes can be improved, and a larger air gap flux surface area can be provided; The balance of the magnetic flux distribution causes the magnetic flux to concentrate on a relatively larger surface to enhance the torque capability of the linear motor; and the balance effect of the magnetic attraction force perpendicular to the moving direction between the stator and the mover does not cause Bad effects on the motor.

 Fig. 4 is an exploded perspective view showing the structure of a mover of a linear motor according to a third embodiment of the present invention. Fig. 4A is an exploded view of the magnetic component of the mover of the third embodiment of the present invention. Fig. 4B is a cross-sectional view showing a linear motor of a third embodiment of the present invention by way of an icon. Fig. 5 is a combination diagram of the linear motor of the third embodiment, which is suitable for providing power for linear movement. With respect to the first embodiment, in the third embodiment, the joint portion of each magnetic component is divided into two U-shaped halves 111 having the same structure to form a seal around the moving direction, and each half of the joint is formed. A U-shaped bipolar permanent magnet 12 is disposed on the inner surface of the portion 111; and each electromagnet assembly of the armature member remains unchanged, so that each pole 32 of the pair of poles of the electromagnet assembly and the magnet of the field magnet member One of the two magnetic poles of the component corresponds. Thus, the armature members are not only separated from the field magnet members by air gaps 70 on opposite sides of the first direction, but also define two air gaps 71 between the armature members and the field magnet members on both sides of the second direction. In the third embodiment, the non-magnetic field magnet member housings are divided into two halves 101 of the same structure by a conventional fixing method, so that a plurality of magnetic components of the mover are placed in the non-magnetic field magnet member housing. Within 101, the lock assemblies 101a and 101b are shown in the figures as an illustration. Such a change of the third embodiment makes the preparation of the components relatively simple, so that the magnetic flux return path in the joint of the magnetic component as the yoke is improved more balanced, thereby improving the magnetic flux distribution of the magnetic component. And reducing the flux leakage of the field magnet members to achieve a further geometrically balanced requirement, which is shown as an icon in the figure; the magnetic field polarity indicated in the figure is only for the magnetic and polar faces facing the air gap The icon description of the magnetic field polarity is not a limitation.

 Figure 6 is a cross-sectional view showing a modified partial structure of a linear motor similar to the structure of Figure 4B, showing a fourth embodiment of the present invention. In the fourth embodiment, an additional permanent magnet 13 is added to both sides of each U-shaped half of the joint of the magnetic assembly of the field magnet member, and an additional permanent magnet 13 is added to both sides of the joint to serve as a magnetic component. The concentration and direction of the flux return of the flux loop in the joint is the bow 1. Although the permanent magnet poles 12 of opposite polarity of the two pole faces of the magnetic component are not changed, the magnetic components of the foregoing embodiment are used in order to facilitate assembly of the two additional permanent magnets 13 of each magnetic component of the field magnet member. Each U-shaped half of the joint is replaced by each half 112 of the joint of Figure 6, which is shown as an icon in the figure; the polarity of the magnetic field indicated in the figure is only for the iconic description of the polarity of the magnetic field. , not as a limitation. However, in the fourth embodiment of the present invention, one of the two additional permanent magnets 13 of Fig. 6 may be replaced with a shape-like magnetic substance of the same shape. This change can improve the flux distribution of the magnetic component and the flux leakage is further reduced to achieve better linear motor operation.

Figure 9 is a cross-sectional view showing a modified partial structure of a linear motor similar to the structure of Figure 6 in a fifth embodiment of the present invention. Considering the convenience of preparation and manufacture of permanent magnets, each magnetic pole of the magnetic component in the figure is changed to a circular arc permanent magnet magnetic pole 12b, so that there are two radial component air gaps between the stator and the mover. The stator and the mover are separated, and an axial component air gap corresponding to the axial direction of the stator pole and the corresponding mover pole is used to separate the stator pole and the mover pole. In order to match the change of the permanent magnet 12b, the field magnet member outer casing 101b, each half portion 112b of the magnetic assembly joint, and the additional permanent magnet 13b on both sides of the joint must also be changed. Each of the poles 32b of the electromagnet assembly paired with the coil 33b of the electromagnet assembly also needs to be changed with the permanent magnet 12b, which is exemplified in the drawing. Wherein, because the two magnetic poles of the magnetic component are arranged substantially opposite in the first direction, the opposite ends of the electromagnet assembly and the corresponding magnetic components of the two magnetic poles generate substantially opposite gravitational forces on each other in the first direction component or Repulsive force; and because each pole face of the two magnetic poles of the magnetic component has a corresponding pole face in the second direction, so that each pole of the electromagnet assembly is paired with the pole and the corresponding permanent magnet pole of the magnetic pole of the magnetic component is in the second The components of the directions produce opposite and corresponding gravitational or repulsive forces, so that the unwanted additional force acting between the mover and the stator perpendicular to the direction of movement can be reduced to reduce an additional burden imposed on the mover support mechanism. . This arrangement, although reducing the surface area of the pole faces of each pole, does not differ for the operation of linear motors.

 Fig. 7 is a combination view of the linear motor of the sixth embodiment, which is suitable for providing the power of the arc reciprocating movement. Fig. 7A is a cross-sectional view showing the linear motor of Fig. 7 in a sixth embodiment of the present invention, similarly to the sectional view of the linear motor of the fourth embodiment. In the sixth embodiment, in order to make the structure of the linear motor suitable for arc reciprocating movement, the field magnet member housings 102a, 102b, each of the half portions 113a, 113b of the magnetic assembly coupling seat and the additional sides on both sides of the coupling seat The permanent magnets 131 must also be changed accordingly; and, in order to have a balanced magnetic flux distribution on each of the magnetic poles 121a, 121b of the two magnetic poles of each magnetic component of the field magnet member, each magnetic pole of each of the two magnetic poles of each magnetic component There is approximately the same size of the pole face area such that each pole 321a, 321b of each pair of electromagnet members that are paired with the pair of poles also cooperate to have a pole face area of approximately the same size. With this arrangement, approximately the same pole area can cause the paired poles of the electromagnet assembly to balance the flux distribution on the two poles of the magnetic assembly to achieve a geometrically balanced requirement for the linear motor to be used for arc reciprocating The power of the movement still has the advantages of the linear motor provided by the present invention.

 In the exemplifications of the foregoing first to sixth embodiments, the armature member of the linear motor includes a plurality of coil-containing electromagnet assemblies that are arranged in the moving direction and are magnetically isolated and connected to the opposite poles with the magnetically conductive core portions; The independence of the electromagnet assembly allows the magnetic flux to be concentrated in the electromagnet, and the magnetically separated electromagnet assembly can process the mutual interference between the adjacent electromagnet components to reduce the magnetic flux of the electromagnet itself. The adverse effects of switching interference effects. Moreover, the electromagnet assembly of the armature member is connected to the opposite pole by the core portion having the magnetic permeability, so that each pole of the pair of poles of the electromagnet assembly can additionally increase the pole face in the second direction to increase The magnetic component poles passing through the air gap are aligned with the surface area of the corresponding electromagnet assembly to cause the magnetic flux to concentrate on a relatively larger surface, further enhancing the linear driving force of the linear motor.

 In the foregoing first to sixth embodiments, the field magnet member outer casing as the combined linear motor magnetic component may be formed of a magnetically permeable material, and these modified embodiments, although magnetically isolated due to influence of adjacent magnetic components of the field magnet member However, it is not conducive to the concentration of magnetic flux of the magnetic component, but the operation control of the linear motor is no different, and the available operation of the linear motor can still be obtained.

 In the foregoing first to sixth embodiments, the joint portion of the magnetic assembly of the linear motor may of course be formed of a non-magnetic material, and these other modified embodiments, although adversely affecting the concentration of the magnetic flux, are linear. There is no difference in the operation control of the motor, and the available operation of the linear motor can still be obtained.

Figure 8 is a cross-sectional view showing a modified partial structure of a linear motor similar to the foregoing fourth embodiment of the seventh embodiment of the present invention. In the figure, the two U-shaped permanent magnets on the inner side surface of the magnetic assembly have been replaced by a permanent magnet 122a; wherein the permanent magnet pole faces of the two magnetic poles of each magnetic component are arranged in the first direction Corresponding to each other, and the corresponding pole faces of each of the two magnetic poles of each magnetic component in the second direction are removed, and the closed combination of the magnetic components Additional permanent magnets are added to the seat to direct the flux return distribution in the joint as a yoke. In order to accommodate the change of the permanent magnet 122a, each of the half portions 114 of the magnetic assembly joint and the additional permanent magnets 132 on both sides of the joint must also change; moreover, for the magnetic poles of the magnetic components of the field magnet members Correspondingly, each of the poles 322a of the pair of poles to which the electromagnet assembly is connected by a magnetically conductive core portion 31 must also be cooperatively modified, which is illustrated in the drawings. Thus, the armature members are separated from the field magnet members by air gaps on opposite sides of the first direction. In addition, in another embodiment, the additional permanent magnet 132 on both sides of the joint is replaced by a magnetically permeable material, and the field magnet member shell and magnetic permeability made of the non-magnetic substance are not favorable for the guidance of the magnetic flux. The joint made of material still concentrates the magnetic flux generating torque at the end of the magnetic poles of the two permanent magnets of the magnetic component. In the exemplification of the seventh embodiment, the binding seat of the magnetic component as the magnetic flux return path contains additional permanent magnets as a concentration and guidance of the magnetic flux to provide magnetic flux concentration and flat magnetic flux distribution of the magnetic pole, and The magnetic flux leakage of the permanent magnet is reduced; and, one of the armature members of the linear motor including the plurality of coils and the field magnet member forms a stator of the linear motor, and the other forms a mover of the linear motor. Wherein, the armature member coils are arranged in a manner similar to the arrangement of the armature member coils in the conventional permanent magnet linear motor; moreover, the armature coils may be iron-containing or non-core. Such a change in the seventh embodiment, although reducing the pole face area of each pole, does not differ from the operation of the linear motor.

 Although a three-phase linear motor has been shown in the embodiment of the present invention as an example, the present invention can be applied to a multi-phase linear motor such as a two-phase, four-phase, five-phase linear motor, etc. .

 In addition, the linear motor of the present invention is magnetically isolated from the plurality of electromagnet assemblies of the armature member and magnetically separated from the plurality of magnetic members of the field magnet member, thereby making the electromagnet member of the armature member and the magnetic component of the field magnet member more It is easy to separately manufacture each of them separately, which is advantageous for manufacturing simplification. Since each electromagnet assembly and the magnetic assembly are separate entities, the stator and the mover of the linear motor are easily arranged and adjusted, and can be separately manufactured at the same time, so that the coil of the electromagnet assembly is easily wound and closer. In this way, the amount of copper wire in the coil winding can be reduced and the performance of the motor can be improved. In addition to providing greater output and higher energy efficiency, the linear motor of the present invention actually makes the linear motor easy to manufacture.

 The various embodiments described above are illustrative of the invention, but the invention is not limited by the embodiments. In this disclosure, only a few of the various examples of the invention are shown and described. The invention can be applied in a wide variety of other combinations and environments, and can be varied or modified without departing from the spirit and scope of the invention.

Claims

Claim A linear motor comprising: a field magnet member comprising a plurality of magnetic components including permanent magnets each having two magnetic poles arranged in a moving direction, and each magnetic pole of each of the two magnetic poles of each of the magnetic components Showing a single magnetic field polarity and opposite to the magnetic field polarity of the other pole face;  An armature member comprising a plurality of magnetically isolated electromagnet assemblies having a pair of poles arranged in a direction of movement, each pole of each pair of electromagnet assemblies having a respective pole face; - the two pole faces of each of the magnetic components are arranged to correspond to each other in a first direction, and each pole face of the two pole faces of each of the magnetic components has a corresponding pole face in the second direction ,  The armature member is at least partially comprised by the field magnet member magnetic component such that each pole of the pair of poles of the armature member's electromagnet assembly is separated by a respective air gap and two magnetic poles of the magnetic component of the field magnet member One of them corresponds; and,  The armature member and one of the field magnet members form a stator of the linear motor, and the other forms a mover of the linear motor.  The linear motor according to claim 1, wherein: each of the electromagnet members has a pole face area of about the same size for each of the poles of the pair of poles, and the field magnet member The pole face areas of each of the two magnetic poles of each magnetic component also each have about the same size.  The linear motor according to claim 1 or 2, wherein: the pair of poles of each electromagnet assembly of the armature member are connected by a magnetically conductive core portion, and one coil is at the core of the electromagnet assembly Formed partially, when the coil is energized by current, opposite pole polarities are generated at respective pole faces of the poles of the pair of poles of the electromagnet assembly, and the polarity of the magnetic field generated by the pole faces of each pole is the same, and when the coil When the current passing through is reversed, the polarity of the magnetic field at the pole faces of the paired poles is also reversed.  The linear motor according to claim 1 or 2, wherein: each of the electromagnet assemblies of the armature member is respectively fixed to the armature member via a structure composed of a non-magnetic material, so that the armature member Each electromagnet assembly has no ferromagnetic contact with each other.  The linear motor according to claim 1 or 2, wherein: each magnetic pole of the plurality of magnetic components of the field magnet member is adjacent to the magnetic pole of the magnetic component arranged along the moving direction, and has a magnetic pole polarity N/S Continuously alternate configuration.  The linear motor according to claim 5, wherein the magnetic pole faces of the two magnetic poles of each of the magnetic components facing the second direction are separated from each other by a gap.  The linear motor according to claim 5, wherein the magnetic poles of the magnetic components adjacent in the moving direction are separated from each other by a gap.  The linear motor according to claim 7, wherein the magnetic members adjacent to each other in the moving direction are not only separated by a gap but also have no ferromagnetic contact with each other.  The linear motor according to claim 1 or 2, wherein: each of the permanent magnet-containing magnetic members has a coupling seat formed of a magnetically permeable material; and a plurality of permanent magnets are disposed on each of the magnetic components Bonding the inner side surface of the seat to form the two magnetic poles of the magnetic component; and each permanent magnet forming the magnetic pole of the magnetic component exhibits only a single magnetic field polarity on the surface facing the air gap, and the inner side surface of the joint coupled to the magnetic component The magnetic field on the back surface of the permanent magnet has the opposite polarity. 10. A linear motor according to claim 9, wherein: the joint portion of each of the magnetic members of the field magnet is closed around the direction of movement. 11. A linear motor according to claim 10, wherein: the combination of the magnetic components of the field magnet member includes additional permanent magnets for concentration and guidance of the magnetic flux.  12. A field magnet member of a linear motor characterized in that it contains:  a plurality of permanent magnet-containing magnetic components arranged in a moving direction to form a coupling seat along a moving direction, and the permanent magnets are disposed on an inner side surface of the coupling seat of each of the magnetic components to form two magnetic poles of the magnetic component, and The two permanent magnet pole faces of each of the magnetic components are arranged to correspond to each other in the first direction, and each of the pole faces of the two permanent magnet poles of each of the magnetic components exhibits only a single magnetic field polarity and The magnetic poles of the other pole pole face are opposite in polarity, and the permanent magnets adjacent to each other in the moving direction are not only separated by a gap but also magnetically isolated from each other and alternately arranged with a magnetic field polarity N/S; wherein the linear motor contains a field magnet member and an armature member including a plurality of coils at least partially comprised by the field magnet member magnetic assembly; and wherein the armature member and one of the field magnet members form a stator of the linear motor Another mover that forms the linear motor.  A field magnet member for a linear motor according to claim 12, wherein: the joint portion of each of the magnetic members of the field magnet member is closed around the moving direction.  14. A field magnet member for a linear motor according to claim 13 wherein: the combination of the magnetic components of the field magnet member includes additional permanent magnets for concentration and guidance of the magnetic flux.