TWI551012B - Motor - Google Patents

Description

Motor

The invention relates to a motor, in particular to a motor capable of quickly stopping motion after power-off.

When the motion motor needs to stop moving, it is usually electrically connected to the motor by designing a feedback circuit, and the feedback circuit is used to stop the motor from moving. However, when the feedback circuit is used to stop the motor, the motor cannot achieve immediate stop motion due to the inertia of the mover or rotor in the motor and the small friction between the mover and the stator in the motor.

In view of the above, it is necessary to provide a motor that can quickly stop moving after power is turned off.

An electric motor includes a stator module and a mover module, the stator module includes a fixed base and a plurality of magnetic pole pairs fixed to the fixed seat, each of the magnetic pole pairs includes two magnets, and each of the magnetic poles has two magnets Each of the movable sub-modules includes a sliding member and a three-phase coil fixed on the sliding member, the sliding member is slidably disposed in the fixing seat, and the sliding member is located in each Between the two magnets of the pair of magnetic poles, the sliding member includes a sliding portion, the sliding portion has a plate shape, the three-phase coil is disposed in the sliding portion, and a plurality of iron pieces are fixed on one side of the sliding portion, and the plurality of iron pieces are fixed It can be attracted by a magnet adjacent to the plurality of iron pieces.

An electric motor includes a stator module and a mover module, the stator module including a fixed seat And two sets of three-phase coils fixed on the fixed seat, the mover module comprises a sliding member and is fixed on the sliding member and fixed with a pair of magnetic poles, each of the pair of magnetic poles comprises two magnets, and each of the magnetic pole pairs The magnets are respectively disposed on opposite sides of the sliding member, the sliding member is slidably disposed in the fixing seat, and the sliding member is located between the two sets of three-phase coils, the fixing base comprises two fixing plates, and the two fixing plates The three-phase coil is disposed in the two fixing plates. The at least one fixing plate is fixed with a plurality of iron pieces, and the plurality of iron pieces can be attracted by the magnets adjacent to the plurality of iron pieces.

The sliding piece of the three-phase coil is fixed on the motor of the invention or the iron piece is arranged on the fixed seat, so that when the moving of the moving element module is required to be stopped, the alternating current that is connected to the three-phase coil is disconnected, and the iron piece is adjacent to the iron piece. The magnet is attracted so that the mover module stops moving immediately.

100‧‧‧ motor

10‧‧‧ Stator module

11‧‧‧ Fixed seat

111‧‧‧Support plate

113‧‧‧ fixed plate

13,35‧‧‧ magnetic pole pairs

131,351‧‧‧ magnet

130‧‧‧Sliding space

30‧‧‧Moving Module

31‧‧‧Sliding parts

311‧‧‧Sliding section

313‧‧‧Installation Department

3131‧‧‧ openings

33,15‧‧‧Three-phase coil

50‧‧‧ iron pieces

1 is a perspective view of a three-dimensional assembly of a motor according to a first embodiment of the present invention.

2 is a perspective assembled view of the motor of FIG. 1 at another angle.

3 is a perspective exploded view of the motor shown in FIG. 1.

Figure 4 is a cross-sectional view of the motor of Figure 1 taken along line IV-IV.

Figure 5 is a cross-sectional view of the motor of Figure 1 taken along V-V.

Fig. 6 is a perspective exploded view of the motor of the second embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view showing a motor according to a third embodiment of the present invention.

Referring to FIG. 1 to FIG. 2 , the motor 100 of the first embodiment of the present invention includes a stator module 10 , a mover module 30 , and an iron piece 50 fixed to the mover module 30 . This embodiment The motor 100 is a U-groove linear motor.

Referring to FIG. 3 to FIG. 5 , the stator module 10 includes a fixing base 11 and a plurality of magnetic pole pairs 13 fixed to the fixing base 11 . The fixing base 11 has a U shape. The fixing base 11 includes a support plate 111 and two fixing plates 113. Both the support plate 111 and the two fixing plates 113 have a rectangular parallelepiped shape. The two fixing plates 113 are formed by vertically extending from both sides of the support plate 111 in the same direction away from the support plate 111. In this embodiment, the length direction of the support plate 111 is defined as a first direction, that is, an X-axis direction, and the width direction of the support plate 111 is defined as a second direction, that is, a Y-axis direction, and the height direction of the support plate 111 is defined as a third direction. , that is, the Z-axis direction.

The plurality of magnetic pole pairs 13 are evenly spaced and fixed to the fixed base 11. Each of the pair of magnetic poles 13 includes two magnets 131 which are opposite in magnetic orientation and are disposed opposite to each other. Each of the magnetic pole pairs 13 and two magnetically opposite magnets 131 are respectively fixed to the corresponding fixing plates 113. The magnetic properties of the two adjacent magnets 131 disposed in each of the plurality of fixed magnets 131 fixed on each of the fixed plates 113 are opposite. The plurality of magnets 131 on one of the fixed plates 113 and the plurality of magnets 131 on the other of the fixed plates 113 form a sliding space 130. In the present embodiment, each of the magnets 131 extends in the second direction.

The mover module 30 includes a slider 31 and a three-phase coil 33 disposed in the slider 31. The three-phase coil 33 can be in electrical communication with an external power source (not shown). The slider 31 includes a sliding portion 311 and a mounting portion 313 fixed to the sliding portion 311. The sliding portion 311 has a plate shape, and the three-phase coil 33 is disposed in the sliding portion 311. The sliding portion 311 is housed in the sliding space 130 and is located between the two magnets 131 of each of the pair of magnetic poles 13. The mounting portion 313 is substantially U-shaped for fixing an object (not shown) to be driven by the motor 100. The mounting portion 313 has a U-shaped opening 3131. The side of the sliding portion 311 away from the support plate 111 is received in the U-shaped opening 3131 of the mounting portion 313, and the sliding portion 311 is away from one side of the support plate 111. It is fixed to the mounting portion 313. An iron piece 50 is fixed to one side of the sliding portion 311 parallel to one side of the fixing plate 113. In the present embodiment, the number of the iron pieces 50 is plural, and the sliding portion 311 of the slider 31 is integrally molded with the three-phase coil 33 by a method of injection molding. It can be understood that in other embodiments, the number of iron pieces 50 can also be one.

The iron piece 50 is elongated. The plurality of iron pieces 50 are respectively fixed on the same side of the sliding portion 311 parallel to the fixing plate 113, and the arrangement direction of the plurality of iron pieces 50 is the same as the length extending direction of the supporting plate 111, that is, the plurality of iron pieces 50 are arranged in the first direction. cloth. Each of the iron pieces 50 is oriented to extend in the second direction, that is, the same direction as the extension of the magnet 131. In the present embodiment, when the motor 100 is not in use, the iron piece 50 is sucked by the magnet 131 fixed on the fixing base 11. When a three-phase alternating current (not shown) is supplied to the three-phase coil 33, the three-phase coil 33 is excited by the three-phase alternating current to cause the three-phase coil 33 to be magnetized, thereby causing the sliding of the three-phase coil 33 to be fixed. The piece 31 can exert a certain attraction to the iron piece 50. When the attraction force of the three-phase coil 33 to the iron piece 50 is greater than the attraction force of the magnet piece 131 to the iron piece 50, since the slider 31 to which the three-phase coil 33 is fixed has an electromagnetic pushing action between the three-phase coil 33 and the magnet 131 The tendency of the rapid sliding movement, when the three-phase coil 33 is connected to the three-phase alternating current, the adsorption force of the three-phase coil 33 on the iron piece 50 causes the iron piece 50 to be detached from the magnet 131, so that the sliding piece 31 is along the support plate in the sliding space 130. The length of the 111 is extended in the direction of movement, that is, the slider 31 slides in the first direction. When the three-phase coil 33 is disconnected from the external power source, the three-phase coil 33 is no longer excited, and the three-phase coil 33 is no longer magnetic, so the magnet 131 fixed on the fixed seat 11 adsorbs the iron piece 50 to stop the sliding member 31. .

It can be understood that, in other embodiments, at least one iron piece 50 may be disposed on both sides of the sliding portion 311 parallel to the fixing plate 113. If at least one iron piece 50 on both sides of the sliding portion 311 is disposed opposite to each other, The magnetic properties of the two magnets 131 in each magnetic pole pair 13 are not equal or slippery The number of the iron pieces 50 on both sides of the moving portion 311 is different or the size of the iron piece 50 is different, and the magnetic properties of the plurality of magnets 131 on the same side are greater than the magnetic properties of the plurality of magnets 131 on the other side, if each magnetic pole pair 13 The second iron 131 is magnetically equal, and at least one iron piece 50 on one side of the sliding portion 311 is disposed adjacent to the support plate 111, and at least one iron piece 50 on the other side is disposed away from the support plate 111. When the three-phase coil 33 is disconnected from the three-phase alternating current, the three-phase crucible 33 is no longer magnetic, and the iron piece 50 on each side of the sliding portion 311 is attracted by the magnet 131 on the fixed plate 113 of the iron piece 50. In order to stop the movement of the slider 31, the iron piece 50 on both sides of the slider 31 is attracted by the corresponding magnet 131, so that when the slider 31 stops moving, the slider 31 is not parallel to the fixed plate 113.

During assembly, the plurality of magnetic pole pairs 13 are fixed to the fixing plate 113 of the fixing base 11, and the plurality of iron pieces 50 are respectively fixed to one side of the sliding portion 311 of the sliding member 31, and the sliding portion 311 of the iron piece 50 is fixed. Placed in the sliding space 130.

In use, the object driven by the motor 100 is fixed to the mounting portion 313 (not shown), and the three-phase AC 33 provided in the slider 31 is supplied with three-phase alternating current by an external power source. The three-phase coil 33 is excited by the three-phase alternating current to cause the three-phase coil 33 to generate magnetism. When the attraction force of the three-phase coil 33 to the iron piece 50 is greater than the attraction force of the magnet 131 to the iron piece 50, since the three-phase coil is fixed The sliding member 31 of the coil 33 has a tendency of rapid sliding movement under the electromagnetic pushing action between the three-phase coil 33 and the magnet 131. Therefore, when the three-phase coil 33 is connected to the three-phase alternating current, the three-phase coil 33 adsorbs the iron piece 50. The force causes the iron piece 50 to be detached from the magnet 131, so that the slider 31 moves in the sliding space 130 in the extending direction of the length of the support plate 111, that is, the slider 31 slides in the first direction. When the three-phase coil 33 is disconnected from the external power source, the three-phase coil 33 is no longer excited, and the three-phase coil 33 is no longer magnetic, so that the three-phase coil 33 is no longer attractive to the iron piece 50, and thus is solid. The magnet 131 fixed on the seating 11 attracts the iron piece 50 to cause the slider 31 to immediately stop moving.

In the embodiment, the iron piece 50 is fixed on one side of the sliding member 31, so that when the sliding member 31 is required to stop moving, the three-phase coil 33 is disconnected from the external power source, and the three-phase coil 33 is no longer excited, and the three-phase coil 33 Without magnetic force, the three-phase coil 33 is no longer attractive to the iron piece 50, and the magnet 131 fixed on the fixing base 11 adsorbs the iron piece 50, so that the sliding piece 31 immediately stops moving and avoids sliding; further, the iron piece 50 It is adsorbed and fixed with the magnet 131, and the shaking of the slider 31 during the stop motion is avoided.

Referring to FIG. 6, the motor 100 in the second embodiment of the present invention is different from the motor 100 in the first embodiment in that the arrangement direction of the plurality of iron pieces 50 fixed to the sliding portion 311 and the support plate 111 are different. The length extension direction is vertical, that is, the plurality of iron pieces 50 are arranged in the second direction. The three-phase coil 33 is excited by the three-phase alternating current to cause the three-phase coil 33 to generate magnetism. When the attraction force of the three-phase coil 33 to the iron piece 50 is greater than the attraction force of the magnet 131 to the iron piece 50, since the three-phase coil is fixed The sliding member 31 of the coil 33 has a tendency of rapid sliding movement under the electromagnetic pushing action between the three-phase coil 33 and the magnet 131. Therefore, when the three-phase coil 33 is connected to the three-phase alternating current, the three-phase coil 33 adsorbs the iron piece 50. The force causes the iron piece 50 to come off the magnet 131, so that the slider 31 moves in the sliding space 130 along the length extending direction of the support plate 111, that is, the slider 31 moves in the first direction. When the three-phase coil 33 is disconnected from the external power source, the three-phase coil 33 is no longer excited, and the three-phase coil 33 is no longer magnetic, so that the three-phase coil 33 is no longer attractive to the iron piece 50, and thus the fixed seat 11 The fixed magnet 131 adsorbs the iron piece 50 to cause the slider 31 to immediately stop moving.

It can be understood that when the three-phase coil 33 is disposed on the slider 31, the iron piece 50 can be set to slide. On either side of the movable member 31, as long as the iron piece 50 can be attracted by the magnet 131 adjacent to the iron piece 50. If the iron piece 50 is disposed on the side of the sliding member 31 extending in the width direction of the supporting plate 111, as long as the distance of the iron piece 50 from one of the fixing plates 113 is greater than the distance of the iron piece 50 from the other fixing plate 113, When the three-phase coil 33 is not energized, the iron piece 50 is attracted by the magnet 131 closest to the iron piece 50; further, the iron piece 50 may be disposed on any of the two sides of the sliding piece 31 as long as the iron piece 50 can be adjacent thereto. The magnet 131 of the iron piece 50 can be attracted.

Referring to FIG. 7 , the motor 100 in the third embodiment of the present invention is different from the motor 100 in the first embodiment in that the two fixed plates 113 of the fixing base 11 are respectively provided with three-phase coils 15 , and The three-phase coils 15 fixed on the second fixing plate 113 collectively form a sliding space 130. In the present embodiment, each of the fixing plates 113 and the three-phase coil 15 fixed to the fixing plate 113 are integrally molded by injection molding. The pair of magnetic poles 35 are fixed to opposite sides of the slider 31 of the mover module 30. Each of the pair of magnetic poles 35 includes two magnets 351 which are opposite in magnetic orientation and are disposed opposite to each other. Each of the magnetic pole pairs 35 and two magnetically opposite magnets 351 are respectively fixed to opposite sides of the sliding member 31. The magnetic properties of the adjacent two magnets 351 on each side of the slider 31 are opposite. The plurality of iron pieces 50 are respectively fixed to a fixing plate 113. When the motor 100 is in use, the three-phase alternating current (not shown) is supplied to the three-phase coil 15 to energize the slider 31 in the sliding space 130 along the length extending direction of the support plate 111, that is, the slider 31 along the third One direction of movement. The electric power that is passed into the three-phase coil 15 is disconnected, the three-phase coil 15 is no longer excited, and the three-phase coil 33 is no longer magnetic. Therefore, the three-phase coil 33 is no longer attractive to the iron piece 50, and the plurality of iron pieces 50 are The magnet 351 on the slider 31 is attracted to each other, so that the slider 31 is immediately stopped. It can be understood that the three-phase coil 15 can also be mounted on the side of the corresponding fixing plate 113 toward the other fixing plate 113. The plurality of iron pieces 50 are fixed on the three-phase coil 15 and will be electrically connected to the three-phase coil 15. Opening, the magnet 351 and the iron piece on the slider 31 50 is attracted to each other, and the slider 31 is immediately stopped. It can be understood that when the three-phase coil 15 is disposed on the fixed seat 10, the iron piece 50 can be fixed on the outer side of the fixed plate 113 away from the support plate 111. At this time, as long as the three-phase coil 15 is not energized, the iron piece is adjacent to the iron piece. The magnet 351 of 50 attracts the iron piece 50 to be fixed to the fixing base 11, and the three-phase coil 15 has sufficient attraction to the iron piece 50 when energized, so that the slider 31 is fixed when the sliding member 31 has a rapid moving tendency. The magnet 351 can break away from the iron piece 50; the iron piece 50 can also be fixed on the inner side surface of the support plate 111, and when the three-phase coil 15 is not energized, the magnet 351 attracts the iron piece 50 to be fixed on the fixed seat 11, and three The phase coil 15 has a sufficient attraction to the iron piece 50 when energized, so that the magnet 351 fixed on the slider 31 can break the iron piece 50 when the slider 31 has a rapid moving tendency. It can be understood that when the three-phase coil 15 is disposed on the fixing base 113, at least one iron piece 50 can also be disposed on the opposite side of the two fixing plates 113.

It can be understood that the mounting portion 313 of the sliding member 31 can be omitted, and the object that needs to be driven by the motor 100 can be directly fixed to the sliding portion 311 of the mover; the sliding member 31 can also protrude from the sliding space 130 and be driven by the sliding member. The object is connected to the slider 31 housed in the sliding space 130 by other connecting structures.

It can be understood that in other embodiments, the motor 100 can be a cylindrical or flat linear motor, or other types of motors.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

111‧‧‧Support plate

113‧‧‧ fixed plate

130‧‧‧Sliding space

131‧‧‧ Magnet

31‧‧‧Sliding parts

311‧‧‧Sliding section

313‧‧‧Installation Department

3131‧‧‧ openings

33‧‧‧Three-phase coil

50‧‧‧ iron pieces

Claims (10)

An electric motor includes a stator module and a mover module, the stator module includes a fixed base and a plurality of magnetic pole pairs fixed to the fixed seat, each of the magnetic pole pairs includes two magnets, and each of the magnetic poles has two magnets Each of the movable sub-modules includes a sliding member and a three-phase coil fixed on the sliding member, the sliding member is slidably disposed in the fixing seat, and the sliding member is located in each The improvement between the two magnets of the magnetic pole pair is that the sliding member includes a sliding portion, the sliding portion has a plate shape, and the three-phase coil is disposed in the sliding portion, and at least one side of the sliding portion is fixed with a plurality of iron pieces. And the plurality of iron pieces can be attracted by the magnet adjacent to the plurality of iron pieces. The motor of claim 1, wherein each of the magnetic poles has a magnetic opposite and parallel to each other. The motor of claim 1, wherein the fixing base comprises a supporting plate and two fixing plates, wherein the two fixing plates are formed by extending from opposite sides of the supporting plate in the same direction, and each of the magnetic poles has two magnets respectively Fixed on the two fixing plates, the magnets of the two adjacent magnets on the fixing plate are opposite to each other, and the plurality of magnets fixed on the two fixing plates together form a sliding space, and the sliding member is received in the sliding space, the sliding The piece can move in the sliding space along the length extension direction of the support plate under the action of the three-phase coil and the electromagnetic thrust of the magnet. The motor of claim 3, wherein the sliding member further comprises a mounting portion fixed to the sliding portion, the sliding portion being received in the sliding space, the number of the iron pieces being at least two, the at least two The iron pieces are respectively fixed on two sides of the sliding portion parallel to the fixing plate. The motor of claim 4, wherein the plurality of iron pieces are arranged in a direction parallel to a length extension direction of the support plate. The motor of claim 4, wherein the arrangement direction of the plurality of iron pieces and the branch The length of the struts extends perpendicularly. An electric motor includes a stator module and a mover module, the stator module includes a fixed seat and two sets of three-phase coils fixed on the fixed seat, the mover module includes a sliding member and is fixed on the sliding member Each pair of magnetic poles is fixed with two magnets, and two magnets of each of the magnetic poles are respectively disposed on opposite sides of the sliding member, the sliding member is slidably disposed in the fixing seat, and the sliding member is located The improvement between the two sets of three-phase coils is that the fixing base comprises two fixing plates, the two fixing plates are in a plate shape, and the three-phase coils are disposed in the two fixing plates, and the at least one fixing plate is fixed with a plurality of fixing plates An iron piece, and the plurality of iron pieces can be attracted by a magnet adjacent to the plurality of iron pieces. The motor of claim 7, wherein each of the magnetic poles has a magnetic opposite and parallel to each other. The motor of claim 7, wherein the fixing base further comprises a supporting plate, wherein the two fixing plates are formed by extending from opposite sides of the supporting plate toward the same direction, and the three-phase coils fixed on the two fixing plates are formed together. In a sliding space, the sliding member is received in the sliding space, and the sliding member can slide in the sliding space along the length extending direction of the supporting plate under the action of the electromagnetic force of the three-phase coil and the magnet. The motor of claim 9, wherein the sliding member comprises a sliding portion and a mounting portion fixed to the sliding portion, wherein the sliding portion is received in the sliding space, and the number of the iron pieces is at least two. At least two iron pieces are respectively fixed on the side of the two fixing plates parallel to the sliding portion.