WO2022006924A1 - 一种振动马达 - Google Patents

一种振动马达 Download PDF

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Publication number
WO2022006924A1
WO2022006924A1 PCT/CN2020/101841 CN2020101841W WO2022006924A1 WO 2022006924 A1 WO2022006924 A1 WO 2022006924A1 CN 2020101841 W CN2020101841 W CN 2020101841W WO 2022006924 A1 WO2022006924 A1 WO 2022006924A1
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WO
WIPO (PCT)
Prior art keywords
vibrator
magnetic steel
magnet
magnetic
vibration
Prior art date
Application number
PCT/CN2020/101841
Other languages
English (en)
French (fr)
Inventor
毛路斌
崔志勇
周帅宇
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
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Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022006924A1 publication Critical patent/WO2022006924A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors

Definitions

  • the utility model relates to the field of motors, in particular to a linear vibration motor.
  • Portable consumer electronic products such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment devices, generally use vibration motors for system feedback, such as mobile phone call alerts, game console vibration feedback, etc.
  • vibration motors for system feedback, such as mobile phone call alerts, game console vibration feedback, etc.
  • motors such as cylindrical iron core motors, hollow cup motors and linear vibration motors.
  • the magnetic circuit driving force of the traditional linear vibration motor is single, and the driving force is only the ampere force. Not only the driving force is small, but also the magnetic circuit occupies a large space. Therefore, it is necessary. Therefore, it is necessary to provide a vibration motor with a simple structure and a large driving force.
  • the purpose of the present invention is to provide a vibration motor with simple structure and large driving force.
  • a vibration motor which includes a casing, a stator installed in the casing, a vibrator that can vibrate relative to the stator, and a spring support connecting the casing and the vibrator
  • the vibrator comprising: A mass block fixed with the spring bracket and passing through the central position to form an accommodation space, a magnetic steel array arranged in the accommodation space, and a magnetic conductive sheet sandwiched between the magnetic steel and the mass block
  • the stator It includes a pole piece fixed in the accommodating space, an iron core fixed on the pole piece, a coil surrounding the iron core, and a flexible circuit board fixed in the casing and electrically connected to the coil
  • the magnetic steel includes a The vibration direction of the vibrator is directly opposite to the stator and the front magnetic steel is arranged perpendicular to the vibration direction of the vibrator and the array magnetic steel is arranged opposite to the stator.
  • the front magnetic steel includes a first front magnetic steel magnetized along the vibration direction of the vibrator and a second front magnetic steel opposite to the magnetization direction of the first front magnetic steel.
  • the first front magnetic steel and the second front magnetic steel are symmetrically arranged on both sides of the stator along the vibration direction of the vibrator.
  • the array magnetic steel includes a first array magnetic steel and a second array magnetic steel symmetrically arranged on both sides of the stator along a vibration direction perpendicular to the vibrator with the first array magnetic steel.
  • the first array of magnetic steels includes first magnetic steels magnetized along the vibration direction of the vibrator and magnetized along the vibration direction of the A second magnet, a third magnet magnetized along the vibration direction of the vibrator and opposite to the first magnet, magnetized along the vibrator's vibration direction and magnetized with the second magnet A fourth magnetic steel with opposite magnetization directions and a fifth magnetic steel with magnetization perpendicular to the vibration direction of the vibrator and in the same magnetization direction as the first magnetic steel.
  • the second array of magnetic steels includes sixth magnetic steels arranged at intervals along the vibration direction of the vibrator and opposite to the magnetization direction of the first magnetic steel, and the magnetization direction of the second magnetic steel is opposite to that of the second magnetic steel.
  • the magnetic conductive sheet is composed of a first magnetic conductive sheet sandwiched between the front magnetic steel and the mass block and a second magnetic conductive sheet sandwiched between the array magnetic steel and the mass block. slice composition.
  • the first array of magnetic steels includes eleventh magnetic steels magnetized along the vibration direction of the vibrator arranged at intervals along the vibration direction of the vibrator, and magnetized along the vibration direction perpendicular to the vibrator.
  • the second array of magnetic steel includes a fourteenth magnetic steel with the same magnetizing direction as the first magnetic steel, and a twelfth magnetic steel, which are arranged at intervals along the vibration direction of the vibrator.
  • the magnetic conductive sheet is composed of a third magnetic conductive sheet sandwiched between the front magnetic steel and the mass block.
  • the third magnetic conductive sheet includes a first fixing portion that is attached to the front magnetic steel, and the first fixing portion extends along the vibration direction perpendicular to the vibrator and is in contact with the array magnetic steel. connected second fixed part.
  • the magnetic conductive sheet is composed of a fourth magnetic conductive sheet sandwiched between the front magnetic steel and the mass block and a fourth magnetic conductive sheet sandwiched between the array magnetic steel and the mass block in a vertical direction. It is formed by a fifth magnetic conductive sheet facing the front magnet steel in the vibration direction of the vibrator.
  • the fifth magnetic conductive sheet includes a third fixing portion that is attached to the array magnetic steel along a vibration direction perpendicular to the vibrator, and the third fixing portion is bent and extended along the vibration direction of the vibrator.
  • a fourth fixing part is formed and is perpendicular to the vibration direction of the vibrator and is opposite to the front magnetic steel.
  • the housing includes a lower cover plate for fixing the flexible circuit board, an upper cover plate opposite to the lower cover plate, and a first side connected between the upper cover plate and the lower cover plate a wall and a second side wall connected to the first side wall.
  • the first side wall includes a first support wall extending along the vibration direction of the vibrator and a second support wall extending from the first support wall and bending and extending perpendicular to the vibration direction of the vibrator
  • the second side wall includes a third support wall extending along the vibration direction of the vibrator and connected with the second support wall, and a third support wall extending from the third support wall and bending and extending along the vibration direction perpendicular to the vibrator and a fourth support wall connected with the first support wall.
  • the spring support includes a first spring support and a second spring support respectively provided on both sides of the mass block along the vibration direction of the vibrator.
  • the first spring support includes a first elastic support part suspended in the casing, extending from an end of the first elastic support part close to the first support wall and along the vibration direction of the vibrator.
  • the first welding part which is bent and extended and fixed with the mass block, extends from one end of the elastic support part close to the third support wall and extends along the vibration direction of the vibrator and is connected with the third support wall.
  • the fixed second welding part is bent and extended and fixed with the mass block.
  • the second spring bracket includes a second elastic support part suspended in the casing, extending from one end of the elastic support part close to the third support wall and bending and extending along the vibration direction of the vibrator;
  • the third welding part fixed with the mass block and the elastic support part extending out from one end of the elastic support part close to the first support wall and bent along the vibration direction of the vibrator and fixed with the first support wall Fourth welding part.
  • the motor further includes a welding piece fixed on the spring bracket, the welding piece includes a first welding piece fixed on the end of the first welding part away from the mass block, and a welding piece fixed on the second welding part.
  • a second welding piece at one end of the third support wall, a third welding piece fixed at one end of the third welding portion away from the mass block, and one end of the fourth welding portion away from the first support wall the fourth solder tab.
  • the mass block further comprises an outer peripheral side, a first protruding portion extending from the outer peripheral side close to the first support wall and fixed with the first welding portion, A second protruding portion extending from a third supporting wall and fixed to the third welding portion and surrounding an inner peripheral side of the receiving space, the magnetic conductive sheet is sandwiched between the magnetic steel and the inner between the sides.
  • the motor further includes a limit block spaced from the mass block
  • the limit block includes a limit block fixed to the lower cover plate and spaced between the second support wall and the mass block
  • the first limit block and the second limit block fixed on the lower cover and arranged between the fourth support wall and the mass block at intervals
  • the first limit block and the second limit block The limit blocks are respectively arranged at intervals from the spring brackets.
  • the first limit block is located between the second support wall and the mass block near the second support wall, and the second limit block is located between the fourth support wall and the mass block position close to the fourth support wall.
  • an end of the second support wall close to the lower cover plate is formed through a through groove along the vibration direction of the vibrator, and the flexible circuit board extends out of the casing through the through groove.
  • the pole piece includes a first pole piece fixed on the lower cover plate and located in the receiving space and a second pole piece arranged opposite to the first pole piece, and the iron core is fixed on the between the first pole piece and the second pole piece.
  • the beneficial effect of the present invention is that: by arranging the front magnetic steel facing the stator along the vibration direction of the vibrator, the vibration of the vibrator of the electromagnetic force driving motor is provided, and at the same time, the vibration direction of the vibrator is perpendicular to the vibration direction of the vibrator.
  • the array magnetic steel is arranged opposite to the stator to provide the vibrator vibration of the ampere force to drive the motor, and to provide a larger driving force for the motor through the combined action of the ampere force and the electromagnetic force, and the magnetic steel and the magnetic conductive sheet form a seal.
  • Magnetic circuit increase the internal magnetic steel used to generate driving force, weaken the external magnetic field, and make the motor run more smoothly.
  • FIG. 1 is a schematic three-dimensional structural diagram of a vibration motor according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an exploded structure of a vibration motor according to an embodiment of the present invention.
  • FIG. 3 is a schematic three-dimensional structural diagram of a vibration motor when the upper cover plate is hidden according to an embodiment of the present invention.
  • FIG. 4 is a top view of the structure of the vibration motor when the upper cover plate is hidden according to an embodiment of the present invention.
  • FIG. 5 is a schematic cross-sectional view at A-A in FIG. 4 .
  • FIG. 6 is a schematic cross-sectional view at B-B in FIG. 4 .
  • FIG. 7 is a schematic cross-sectional view at C-C in FIG. 4 .
  • FIG. 8 is a schematic cross-sectional view at D-D in FIG. 4 .
  • FIG. 9 is a schematic diagram of the vibration principle of the vibration motor according to the first embodiment of the present invention.
  • FIG. 10 is a schematic three-dimensional structure diagram of the vibration motor when the upper cover plate is hidden according to the second embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the vibration principle of the vibration motor according to the second embodiment of the present invention.
  • FIG. 12 is a schematic three-dimensional structural diagram of the vibration motor in the third embodiment of the present invention when the upper cover is hidden.
  • the first embodiment provides a vibration motor 100.
  • the motor 100 includes a housing 10, a stator 20, a vibrator 30, a spring bracket 40, a welding piece 50, a limit block 60, a stator 20, a vibrator 30,
  • the spring support 40 , the welding piece 50 and the limiting block 60 are respectively installed in the casing 10 .
  • the stator 20 is installed in the casing 10
  • the vibrator 30 can vibrate relative to the stator 20
  • the spring bracket 40 connects the casing 10 and the vibrator 30 .
  • the vibrator 30 includes a mass block 31a, a magnetic steel 32 and a magnetic conductive sheet 33a, the mass block 31a is fixed with the spring bracket 40, the magnetic steel 32 is arranged in an array in the receiving space 313, and the magnetic conductive sheet 33a clamps It is provided between the magnetic steel 32 and the mass block 31a.
  • the mass block 31 a at least includes an outer peripheral side 311 , an inner peripheral side 312 , a receiving space 313 , a first protruding portion 314 and a second protruding portion 315 .
  • the accommodating space 313 is formed through the central position of the mass block 31a, the inner peripheral side 312 surrounds the accommodating space 313, the first protruding portion 314 extends from the outer peripheral side 311 toward the first support wall 131, and the first protruding portion 314 Fixed with the first welding portion 412, the second protruding portion 315 extends from the outer peripheral side 311 toward the third support wall 141, and the second protruding portion 315 is fixed with the third welding portion 421, and the magnetic conductive sheet 33a clamps It is provided between the magnetic steel 32 and the inner peripheral side 312 .
  • the magnetic steel 32 includes a front magnetic steel 321a and an array magnetic steel 322.
  • the front magnetic steel 321a is disposed opposite to the stator 20 along the vibration direction of the vibrator 30, and the array magnetic steel 322 is perpendicular to the vibrator.
  • the vibration direction of the stator 30 is positioned opposite to the stator 20 .
  • the front magnetic steel 321 a includes a first front magnetic steel 3211 and a second front magnetic steel 3212 .
  • the first front magnetic steel 3211 and the second front magnetic steel 3212 are symmetrically arranged on both sides of the stator 20 along the vibration direction of the vibrator 30 .
  • the first front magnetic steel 3211 is magnetized along the vibration direction of the vibrator 30
  • the magnetization direction of the second front magnetic steel 3212 is opposite to that of the first front magnetic steel 3211 .
  • the end of the first front magnetic steel 3211 close to the stator 20 is the N pole
  • the end of the first front magnetic steel 3211 away from the stator 20 is the S pole
  • the end of the second front magnetic steel 3212 close to the stator 20 is the N pole
  • the end of the second front magnet 3212 facing away from the stator 20 is the S pole.
  • the array magnet 322 includes a first array magnet 3221a and a second array magnet 3222a, and the first array magnet 3221a and the second array magnet 3222a are symmetrically arranged on both sides of the stator 20 along the vibration direction perpendicular to the vibrator 30 . side.
  • the first array magnet 3221a includes a first magnet 32211 , a second magnet 32212 , a third magnet 32213 , a fourth magnet 32214 and a fifth magnet 32215 , the first magnetic steel 32211 , the second magnetic steel 32212 , the third magnetic steel 32213 , the fourth magnetic steel 32214 and the fifth magnetic steel 32215 are arranged at intervals along the vibration direction of the vibrator 30 .
  • the first magnet 32211 is magnetized along the vibration direction perpendicular to the vibrator 30
  • the second magnet 32212 is magnetized along the vibration direction of the vibrator 30
  • the third magnet 32213 is magnetized along the vibration direction perpendicular to the vibrator 30 .
  • the third magnet 32213 and the first magnet 32211 are magnetized in opposite directions
  • the fourth magnet 32214 is magnetized along the vibration direction of the vibrator 30, and the fourth magnet 32214 and the second magnet 32212 are magnetized.
  • the magnetic directions are opposite
  • the fifth magnetic steel 32215 is magnetized along the vibration direction perpendicular to the vibrator 30
  • the fifth magnetic steel 32215 is magnetized in the same direction as the first magnetic steel 32211 .
  • the second array magnet 3222a includes a sixth magnet 32221, a seventh magnet 32222, an eighth magnet 32223, a ninth magnet 32224 and a tenth magnet 32225
  • the sixth magnet 32221 , the seventh magnet 32222 , the eighth magnet 32223 , the ninth magnet 32224 and the tenth magnet 32225 are arranged at intervals along the vibration direction of the vibrator 30 .
  • the sixth magnet 32221 and the first magnet 32211 are magnetized in opposite directions
  • the seventh magnet 32222 and the second magnet 32212 are magnetized in the same direction
  • the eighth magnet 32223 and the third magnet 32213 are magnetized in opposite directions.
  • the magnetization direction of the ninth magnet 32224 and the fourth magnet 32214 is the same, and the magnetization direction of the tenth magnet 32225 and the fifth magnet 32215 are opposite.
  • the end of the first magnetic steel 32211 close to the second array magnetic steel 3222a is N pole, and the end of the first magnetic steel 32211 away from the second array magnetic steel 3222a is S
  • the end of the second magnet 32212 close to the first magnet 32211 is the N pole
  • the end of the second magnet 32212 away from the first magnet 32211 is the S pole
  • the end of the third magnet 32213 close to the second array magnet 3222a The end of the third magnet 32213 away from the second array magnet 3222a is the N pole
  • the end of the fourth magnet 32214 close to the third magnet 32213 is the S pole
  • the fourth magnet 32214 is away from the third magnet 32213
  • One end of the fifth magnet 32215 is the N pole
  • the end of the fifth magnet 32215 close to the second array magnet 3222a is the N pole
  • the end of the fifth magnet 32215 away from the second array magnet 3222a is the S pole.
  • the end of the sixth magnet 32221 close to the first array magnet 3221a is the N pole
  • the end of the sixth magnet 32221 away from the first array magnet 3221a is the S pole
  • the seventh magnet 32222 is close to the sixth magnet
  • One end of 32221 is the N pole
  • the end of the seventh magnet 32222 away from the sixth magnet 32221 is the S pole
  • the end of the eighth magnet 32223 close to the first array magnet 3221a is the S pole
  • the end of the ninth magnet 32224 close to the eighth magnet 32223 is the S pole
  • the end of the ninth magnet 32224 away from the eighth magnet 32223 is the N pole
  • one end of the tenth magnet 32225 away from the first array magnet 3221a is the S pole.
  • the magnetic circuit composed of the first magnetic steel 32211, the second magnetic steel 32212 and the third magnetic steel 32213 as an example, it forms a complete magnetic circuit closed loop, so that the motor 100
  • the outer magnetic field is weaker, while the inner magnetic field for generating the driving force is strengthened, resulting in less magnetic leakage and higher utilization of magnetic energy, so that the motor 100 runs more smoothly.
  • the iron core 22 and the pole piece 21 close to the first front magnetic steel 3211 at one end showing the S pole, and the iron core 22 and the pole piece 21 are close to the second pole.
  • One end of the front magnetic steel 3212 presents an N pole, so that the first front magnetic steel 3211 is attracted and the second front magnetic steel 3212 is subjected to a repulsive force, thereby driving the vibrator 30 to vibrate to the right in FIG. 9 by electromagnetic force.
  • the coil 23 is subjected to the ampere force in the magnetic field along the leftward direction in FIG. 9 .
  • the array magnetic steel 322 of the vibrator 30 is subjected to According to the reaction force to the right in FIG. 9 , the vibrator 30 is driven to vibrate in the direction to the right in FIG. 9 by the ampere force.
  • the direction of the current changes, the polarities of the iron core 22 and the pole piece 21 change accordingly, and the ampere force that the coil 23 receives in the magnetic field also changes accordingly, so that when alternating current is applied, the vibrator 30 is always subjected to the same ampere force acting in the same direction. and electromagnetic force, so that the motor 100 has a larger driving force.
  • the magnetic conductive sheet 33a is composed of a first magnetic conductive sheet 331 and a second magnetic conductive sheet 332, and the first magnetic conductive sheet 331 is sandwiched between the front magnetic steel 321a and the mass block 31a.
  • the second magnetic conductive sheet 332 is sandwiched between the array magnetic steel 322 and the mass block 31a, and the magnetic conductive sheet 33a cooperates with the magnetic steel 32 to improve the closure of the magnetic circuit.
  • the stator 20 includes a pole piece 21 , an iron core 22 , a coil 23 and a flexible circuit board 24 , the pole piece 21 is fixed in the receiving space 313 , the iron core 22 is fixed on the pole piece 21 , and the coil 23 is arranged around the iron core 22 .
  • the flexible circuit board 24 is fixed in the casing 10 , and the flexible circuit board 24 is electrically connected with the coil 23 .
  • the pole piece 21 includes a first pole piece 211 and a second pole piece 212 , the first pole piece 211 is fixed to the lower cover 11 , and the first pole piece 211 is located in the receiving space 313 .
  • the second pole piece 212 is disposed opposite to the first pole piece 211 , and the iron core 22 is fixed between the first pole piece 211 and the second pole piece 212 .
  • the housing 10 includes a lower cover plate 11 , an upper cover plate 12 , a first side wall 13 , a second side wall 14 and a through groove 15 .
  • One end of the flexible circuit board 24 is fixed to the lower cover 11 , and the other end of the flexible circuit board 24 extends to the outside of the casing 10 through the through groove 15 .
  • the through groove 15 is formed at one end of the second support wall 132 close to the lower cover 11 , and the through groove 15 penetrates the second support wall 132 along the vibration direction of the vibrator 30 .
  • the lower cover 11 is opposite to the upper cover 12 , the first side wall 13 is connected between the upper cover 12 and the lower cover 11 , and the second side wall 14 is connected with the first side wall 13 .
  • the first side wall 13 includes a first support wall 131 and a second support wall 132 , the first support wall 131 extends along the vibration direction of the vibrator 30 , and the second support wall 132 extends from the first support wall 131 and extends along the vibration direction of the vibrator 30 . It bends and extends perpendicular to the vibration direction of the vibrator 30 .
  • the second side wall 14 includes a third support wall 141 and a fourth support wall 142.
  • the third support wall 141 extends along the vibration direction of the vibrator 30, and the third support wall 141 is connected with the second support wall 132.
  • the fourth support wall 142 extends from the third support wall 141 , and the fourth support wall 142 is bent and extended along the vibration direction perpendicular to the vibrator 30 , and the fourth support wall 142 is connected with the first support wall 131 .
  • the spring support 40 includes a first spring support 41 and a second spring support 42 .
  • the first spring support 41 and the second spring support 42 are respectively provided on both sides of the mass block 31 a along the vibration direction of the vibrator 30 .
  • the first spring bracket 41 includes a first elastic support portion 411 , a first welding portion 412 and a second welding portion 413 , the first elastic support portion 411 is suspended in the housing 10 , and the first welding portion 412 is formed by the first elastic
  • the support portion 411 extends out from one end of the first support wall 131 , and extends along the vibration direction of the vibrator 30 , and the first welding portion 412 is fixed to the mass block 31 a .
  • the second welding portion 413 extends from one end of the elastic support portion close to the third support wall 141 , and extends along the vibration direction of the vibrator 30 .
  • the second welding portion 413 is fixed to the third support wall 141 .
  • the second spring bracket 42 includes a second elastic supporting portion 42 , a third welding portion 421 and a fourth welding portion 422 , the second elastic supporting portion 42 is suspended in the housing 10 , and the third welding portion 421 is formed by the elastic supporting portion
  • One end close to the third support wall 141 extends and bends and extends along the vibration direction of the vibrator 30
  • the third welding part 421 is fixed with the mass block 31 a
  • the fourth welding part 422 extends from the elastic support part close to one end of the first support wall 131
  • the fourth welding portion 422 is fixed to the first supporting wall 131 , and is bent and extended along the vibration direction of the vibrator 30 .
  • the soldering piece 50 includes a first soldering piece 51 , a second soldering piece 52 , a third soldering piece 53 and a fourth soldering piece 54 .
  • the first soldering piece 51 is fixed to one end of the first soldering portion 412 away from the mass 31 a
  • the second welding piece 52 is fixed to the end of the second welding portion 413 away from the third support wall 141
  • the third welding piece 53 is fixed to the end of the third welding portion 421 that is away from the mass 31 a
  • the fourth welding piece 54 is fixed to the fourth welding portion 422 One end away from the first support wall 131 .
  • the limit block 60 includes a first limit block 61 and a second limit block 62 , the first limit block 61 is fixed to the lower cover 11 , and the first limit blocks 61 are arranged at intervals on the second support wall 132 and the mass block 31a, and the first limiting block 61 and the first spring bracket 41 are spaced apart.
  • the second limiting block 62 is fixed to the lower cover plate 11 , and the second limiting block 62 is disposed between the fourth support wall 142 and the mass block 31 a at intervals, and the second limiting block 62 and the second spring bracket 42 are spaced apart .
  • the limit block 60 is used to limit the vibration amplitude of the vibrator 30 .
  • the first limit block 61 is located between the second support wall 132 and the mass block 31 a near the second support wall 132 .
  • the second limit block 62 is located between the fourth support wall 142 and the mass 31a near the fourth support wall 142, so that the vibrator 30 can obtain a larger vibration space when it vibrates with a larger amplitude under the action of ampere force and electromagnetic force.
  • the difference between the second embodiment and the first embodiment is that the configurations of the array magnetic steel 322 and the magnetic conductive sheet 33b are different.
  • the first array of magnets 3221b includes eleventh magnets 32216 , twelfth magnets 32217 , and thirteenth magnets 32218 .
  • the steel 32216, the twelfth magnet 32217 and the thirteenth magnet 32218 are arranged at intervals along the vibration direction of the vibrator 30.
  • the eleventh magnet 32216 is magnetized along the vibration direction of the vibrator 30, and the twelfth magnet is magnetized along the vibration direction of the vibrator 30.
  • the thirteenth magnet 32218 is magnetized along the vibration direction of the vibrator 30 and the thirteenth magnet 32218 and the eleventh magnet 32216 are magnetized in the direction of magnetization on the contrary.
  • the second array of magnets 3222b includes fourteenth magnets 32226, fifteenth magnets 32227 and sixteenth magnets 32228, fourteenth magnets 32226, fifteenth magnets
  • the steel 32227 and the sixteenth magnetic steel 32228 are arranged at intervals along the vibration direction of the vibrator 30 in sequence.
  • the fourteenth magnet 32226 is magnetized in the same direction as the first magnet 32211, the fifteenth magnet 32227 is opposite to the twelfth magnet 32217, and the sixteenth magnet 32228 is magnetized with the third magnet 32228.
  • the magnetization direction of the magnet 32213 is the same.
  • the end of the twelfth magnetic steel 32217 close to the second array magnetic steel 3222b is S pole
  • the end of the twelfth magnetic steel 32217 away from the second array magnetic steel 3222b is N Pole
  • the end of the eleventh magnet 32216 close to the twelfth magnet 32217 is the S pole
  • the end of the eleventh magnet 32216 away from the twelfth magnet 32217 is the N pole
  • the thirteenth magnet 32218 is close to the twelfth
  • One end of the magnet 32217 is the S pole
  • the end of the fourth magnet 32214 away from the twelfth magnet 32217 is the N pole
  • the end of the fifteenth magnet 32227 close to the first array magnet 3221b is the S pole.
  • the end of the fifteenth magnet 32227 away from the first array of magnets 3221b is the N pole
  • the end of the fourteenth magnet 32226 close to the fifteenth magnet 32227 is the S pole
  • One end of 32227 is the N pole
  • the end of the sixteenth magnet 32228 close to the fifteenth magnet 32227 is the S pole
  • the end of the sixteenth magnet 32228 away from the fifteenth magnet 32227 is the N pole.
  • the magnetic conductive sheet 33b is constituted by a third magnetic conductive sheet 333 sandwiched between the front magnetic steel 321b and the mass block 31b.
  • the third magnetic conductive sheet 333 includes a first fixing portion 3331 and a second fixing portion 3332.
  • the first fixing portion 3331 is attached to the front magnetic steel 321b.
  • the vibration direction extends out, and the second fixing portion 3332 is connected with the array magnetic steel 322 , so that a closed magnetic circuit is formed through the third magnetic conductive sheet 333 and the magnetic steel 32 to improve the sealing of the magnetic circuit.
  • the difference between the third embodiment and the second embodiment is that the configuration of the magnetic conductive sheet 33c is different.
  • the magnetic conductive sheet 33c is composed of a fourth magnetic conductive sheet 334 and a fifth magnetic conductive sheet 335, and the fourth magnetic conductive sheet 334 is sandwiched between the front magnetic steel 321c and the mass block 31c.
  • the fifth magnetic conductive sheet 335 is sandwiched between the array magnetic steel 322c and the mass block 31c, and the fifth magnetic conductive sheet 335 faces the front magnetic steel 321c along the vibration direction perpendicular to the vibrator 30 .
  • the fifth magnetic conductive sheet 335 includes a third fixing portion 3351 and a fourth fixing portion 3352.
  • the third fixing portion 3351 is attached to the array magnetic steel 322c along the vibration direction perpendicular to the vibrator 30, and the fourth fixing portion 3352 is fixed by the third
  • the part 3351 is bent and extended along the vibration direction of the vibrator 30, and the fourth fixing part 3352 is perpendicular to the vibration direction of the vibrator 30 and faces the front magnet 321c, so as to pass the fourth magnetic conductive sheet 334 and the fifth magnetic conductive sheet 335
  • a closed magnetic circuit is formed with the magnetic steel 32 to improve the sealing of the magnetic circuit.
  • the present invention provides the vibration of the vibrator 30 of the electromagnetic force driving motor 100 by arranging the front magnet 321a facing the stator 20 along the vibration direction of the vibrator 30, and at the same time by arranging the vibrator 30 along the direction perpendicular to the vibrator
  • the vibration direction of 30 is provided with the array magnetic steel 322 that is opposite to the stator 20, so as to provide the ampere force to drive the vibrator 30 of the motor 100 to vibrate, and to provide a larger driving force for the motor 100 through the combined action of the ampere force and the electromagnetic force
  • the closed magnetic circuit is formed by the magnetic steel 32 and the magnetic conductive sheet 33a, and the internal magnetic steel 32 used to generate the driving force is increased, and the external magnetic field is weakened, so that the motor 100 runs more smoothly.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

一种振动马达(100)，其包括外壳(10)、装设于外壳内的定子(20)、可相对定子振动的振子(30)及连接外壳与振子的弹簧支架(40)，振子包括与弹簧支架相固定且中央位置贯通形成收容空间(313)的质量块(31a)、阵列设置于收容空间内的磁钢(32)及夹设于磁钢与质量块之间的导磁片(33a)，通过沿振子的振动方向设置与定子正对的正面磁钢(321a)，以提供电磁力驱动马达的振子振动，同时通过沿垂直于振子的振动方向设置与定子正对设置的阵列磁钢(322)，以提供安培力驱动马达的振子振动，通过安培力与电磁力的共同作用为马达提供较大的驱动力，通过磁钢与导磁片形成封闭磁路，增加内部用于产生驱动力的磁钢，使马达运行更平稳。

Description

一种振动马达 技术领域
本实用新型涉及马达领域，特别涉及一种线性振动马达。
 背景技术
便携式消费性电子产品，如手机、掌上游戏机、导航装置或者掌上多媒体娱乐设备等，一般会用到振动马达来做***反馈，比如手机的来电提示、游戏机的振动反馈等等，其中所用到的马达，主要有柱状铁心马达、空心杯马达和线性振动马达等几种类型。
 技术问题
传统线性振动马达的磁路驱动力单一，驱动力只有安培力，不仅驱动力小，且磁路占据空间较大。因此，有必要。因此，有必要提供一种结构简单且驱动力大的振动马达。
 技术解决方案
本实用新型的目的在于提供一种结构简单且驱动力大的振动马达。
本实用新型的技术方案如下：一种振动马达，其包括外壳、装设于所述外壳内的定子、可相对所述定子振动的振子及连接所述外壳与振子的弹簧支架，所述振子包括与所述弹簧支架相固定且中央位置贯通形成收容空间的质量块、阵列设置于收容空间内的磁钢及夹设于所述磁钢与所述质量块之间的导磁片，所述定子包括固定于收容空间内的极靴、固定于极靴的铁芯、环绕所述铁芯的线圈及固定于外壳内并与所述线圈电性连接的柔性电路板，所述磁钢包括沿所述振子的振动方向与所述定子正对设置的正面磁钢及沿垂直于所述振子的振动方向与所述定子正对设置的阵列磁钢。
更优地，所述正面磁钢包括沿所述振子的振动方向充磁的第一正面磁钢及与所述第一正面磁钢的充磁方向相反的第二正面磁钢。
更优地，所述第一正面磁钢与所述第二正面磁钢沿所述振子的振动方向对称设置于所述定子的两侧。
更优地，所述阵列磁钢包括第一阵列磁钢及与所述第一阵列磁钢沿垂直于所述振子的振动方向对称设置于所述定子两侧的第二阵列磁钢。
更优地，所述第一阵列磁钢包括沿所述振子的振动方向依次间隔排列的沿垂直于所述振子的振动方向充磁的第一磁钢、沿所述振子的振动方向充磁的第二磁钢、沿垂直于所述振子的振动方向充磁且与所述第一磁钢充磁相反的第三磁钢、沿所述振子的振动方向充磁且与所述第二磁钢充磁方向相反的第四磁钢及沿垂直所述振子的振动方向充磁且与所述第一磁钢充磁方向相同的第五磁钢。
更优地，所述第二阵列磁钢包括沿所述振子的振动方向依次间隔排列的与所述第一磁钢充磁方向相反的第六磁钢、与所述第二磁钢充磁方向相同的第七磁钢、与所述第三磁钢充磁方向相反的第八磁钢、与所述第四磁钢充磁方向相同的第九磁钢及与所述第五磁钢充磁方向相反的第十磁钢。
更优地，所述导磁片由夹设于所述正面磁钢与质量块之间的第一导磁片及夹设于所述阵列磁钢与所述质量块之间的第二导磁片构成。
更优地，所述第一阵列磁钢包括沿所述振子的振动方向依次间隔排列的沿所述振子的振动方向充磁的第十一磁钢、沿垂直于所述振子的振动方向充磁的第十二磁钢及沿所述振子的振动方向充磁且与所述第十一磁钢充磁方向相反的第十三磁钢。
更优地，所述第二阵列磁钢包括沿所述振子的振动方向依次间隔排列的与所述第一磁钢充磁方向相同的第十四磁钢、与所述第十二磁钢充磁方向相反的第十五磁钢及与所述第三磁钢充磁方向相同的第十六磁钢。
更优地，所述导磁片由夹设于所述正面磁钢与所述质量块之间的第三导磁片构成。
更优地，所述第三导磁片包括与所述正面磁钢相贴合的第一固定部及由第一固定部沿垂直于所述振子的振动方向延伸并与所述阵列磁钢相连接的第二固定部。
更优地，所述导磁片由夹设于所述正面磁钢与所述质量块之间的第四导磁片及夹设于所述阵列磁钢与所述质量块之间且沿垂直于所述振子的振动方向与所述正面磁钢正对的第五导磁片构成。
更优地，所述第五导磁片包括沿垂直于所述振子的振动方向与所述阵列磁钢相贴合的第三固定部及由第三固定部沿所述振子的振动方向弯曲延伸出形成并沿垂直于所述振子的振动方向与所述正面磁钢正对的第四固定部。
更优地，所述外壳包括固定所述柔性电路板的下盖板、与所述下盖板相对的上盖板、连接于所述上盖板与所述下盖板之间的第一侧壁及与所述第一侧壁相连接的第二侧壁。
更优地，所述第一侧壁包括沿所述振子的振动方向延伸的第一支撑壁及由第一支撑壁延伸出并沿垂直于所述振子的振动方向弯曲延伸的第二支撑壁，所述第二侧壁包括沿所述振子的振动方向延伸且与所述第二支撑壁相连接的第三支撑壁及由第三支撑壁延伸出并沿垂直于所述振子的振动方向弯曲延伸且与所述第一支撑壁相连接的第四支撑壁。
更优地，所述弹簧支架包括沿所述振子的振动方向分别设于所述质量块两侧的第一弹簧支架和第二弹簧支架。
更优地，所述第一弹簧支架包括悬置于外壳内的第一弹性支撑部、由所述第一弹性支撑部靠近所述第一支撑壁的一端延伸出并沿所述振子的振动方向弯曲延伸且与所述质量块相固定的第一焊接部及由所述弹性支撑部靠近所述第三支撑壁一端延伸出并沿所述振子的振动方向弯曲延伸且与所述第三支撑壁相固定的第二焊接部。
更优地，所述第二弹簧支架包括悬置于外壳内的第二弹性支撑部、由所述弹性支撑部靠近所述第三支撑壁一端延伸出并沿所述振子的振动方向弯曲延伸且与所述质量块相固定的第三焊接部及由所述弹性支撑部靠近所述第一支撑壁一端延伸出并沿所述振子的振动方向弯曲延伸且与所述第一支撑壁相固定的第四焊接部。
更优地，所述马达还包括固定于弹簧支架的焊片，所述焊片包括固定于所述第一焊接部远离所述质量块一端的第一焊片、固定于所述第二焊接部远离所述第三支撑壁一端的第二焊片、固定于所述第三焊接部远离所述质量块一端的第三焊片及固定于所述第四焊接部远离所述第一支撑壁一端的第四焊片。
更优地，所述质量块还包括外周侧、由外周侧向靠近所述第一支撑壁延伸形成且与所述第一焊接部相固定的第一凸起部、由外周侧向靠近所述第三支撑壁延伸形成且与所述第三焊接部相固定的第二凸起部及围绕形成所述收容空间的内周侧，所述导磁片夹设于所述磁钢与所述内周侧之间。
更优地，所述马达还包括与所述质量块间隔设置的限位块，所述限位块包括固定于所述下盖板且间隔设置所述第二支撑壁与所述质量块之间的第一限位块及固定于所述下盖板且间隔设置于所述第四支撑壁与所述质量块之间的第二限位块，所述第一限位块与所述第二限位块分别与所述弹簧支架间隔设置。
更优地，所述第一限位块位于第二支撑壁与质量块之间靠近所述第二支撑壁的位置，所述第二限位块位于所述第四支撑壁与所述质量块之间靠近所述第四支撑壁的位置。
更优地，所述第二支撑壁靠近所述下盖板的一端沿所述振子的振动方向贯穿形成贯穿槽，所述柔性电路板经贯穿槽延伸出外壳。
更优地，所述极靴包括固定于所述下盖板且位于所述收容空间内的第一极靴及与所述第一极靴相对设置的第二极靴，所述铁芯固定于所述第一极靴与第二极靴之间。
 有益效果
本实用新型的有益效果在于：通过沿所述振子的振动方向设置与所述定子正对设置的正面磁钢，以提供电磁力驱动马达的振子振动，同时通过沿垂直于所述振子的振动方向设置与所述定子正对设置的阵列磁钢，以提供安培力驱动马达的振子振动，通过安培力与电磁力的共同作用为马达提供较大的驱动力，通过磁钢与导磁片形成封闭磁路，增加内部用于产生驱动力的磁钢，减弱外部磁场，使马达运行更平稳。
 附图说明
图1为本实用新型实施例一振动马达的立体结构示意图。
图2为本实用新型实施例一振动马达的分解结构示意图。
图3为本实用新型实施例一振动马达隐藏上盖板时的立体结构示意图。
图4为本实用新型实施例一振动马达隐藏上盖板时的结构俯视图。
图5为图4中A-A处剖面示意图。
图6为图4中B-B处剖面示意图。
图7为图4中C-C处剖面示意图。
图8为图4中D-D处剖面示意图。
图9为本实用新型实施例一振动马达的振动原理示意图。
图10为本实用新型实施例二振动马达隐藏上盖板时的立体结构示意图。
图11为本实用新型实施例二振动马达的振动原理示意图。
图12为本实用新型实施例三振动马达隐藏上盖板时的立体结构示意图。
 本发明的最佳实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
实施例一
本实施例一提供一种振动马达100，参见图1～图12，该马达100包括外壳10、定子20、振子30、弹簧支架40、焊片50及限位块60，定子20、振子30、弹簧支架40、焊片50及限位块60分别装设于外壳10内。具体地，定子20装设于外壳10内，振子30可相对定子20振动，弹簧支架40连接外壳10与振子30。
更优地，参见图2，振子30包括质量块31a、磁钢32及导磁片33a，质量块31a与弹簧支架40相固定，磁钢32阵列设置于收容空间313内，导磁片33a夹设于磁钢32与质量块31a之间。
更优地，参见图2～图8，质量块31a至少包括外周侧311、内周侧312、收容空间313、第一凸起部314及第二凸起部315。收容空间313由质量块31a的中央位置贯穿形成，内周侧312围绕该收容空间313，第一凸起部314由外周侧311向靠近第一支撑壁131延伸形成，且第一凸起部314与第一焊接部412相固定，第二凸起部315由外周侧311向靠近第三支撑壁141延伸形成，且第二凸起部315与第三焊接部421相固定，导磁片33a夹设于磁钢32与内周侧312之间。
更优地，参见图2～图8，磁钢32包括正面磁钢321a和阵列磁钢322，正面磁钢321a沿振子30的振动方向与定子20正对设置，阵列磁钢322沿垂直于振子30的振动方向与定子20正对设置。
具体地，正面磁钢321a包括第一正面磁钢3211和第二正面磁钢3212，第一正面磁钢3211与第二正面磁钢3212沿振子30的振动方向对称设置于定子20的两侧。第一正面磁钢3211沿振子30的振动方向充磁，第二正面磁钢3212的充磁方向与第一正面磁钢3211的充磁方向相反。本实施例中，第一正面磁钢3211靠近定子20的一端为N极，第一正面磁钢3211背离定子20的一端为S极，第二正面磁钢3212靠近定子20的一端为N极，第二正面磁钢3212背离定子20的一端为S极。
更优地，阵列磁钢322包括第一阵列磁钢3221a及第二阵列磁钢3222a，第一阵列磁钢3221a与第二阵列磁钢3222a沿垂直于振子30的振动方向对称设置于定子20两侧。
具体地，本实施例中，参见图3，所述第一阵列磁钢3221a包括第一磁钢32211、第二磁钢32212、第三磁钢32213、第四磁钢32214及第五磁钢32215，所述第一磁钢32211、第二磁钢32212、第三磁钢32213、第四磁钢32214及第五磁钢32215沿所述振子30的振动方向依次间隔排列。第一磁钢32211沿垂直于所述振子30的振动方向充磁，第二磁钢32212沿所述振子30的振动方向充磁，第三磁钢32213沿垂直于所述振子30的振动方向充磁，且第三磁钢32213与第一磁钢32211充磁方向相反，第四磁钢32214沿所述振子30的振动方向充磁，且第四磁钢32214与所述第二磁钢32212充磁方向相反，第五磁钢32215沿垂直所述振子30的振动方向充磁，且第五磁钢32215与所述第一磁钢32211充磁方向相同。
具体地，本实施例中，参见图3，所述第二阵列磁钢3222a包括第六磁钢32221、第七磁钢32222、第八磁钢32223、第九磁钢32224及第十磁钢32225，第六磁钢32221、第七磁钢32222、第八磁钢32223、第九磁钢32224及第十磁钢32225，沿所述振子30的振动方向依次间隔排列。第六磁钢32221与所述第一磁钢32211充磁方向相反，第七磁钢32222与第二磁钢32212充磁方向相同，第八磁钢32223与第三磁钢32213充磁方向相反，第九磁钢32224与第四磁钢32214充磁方向相同，第十磁钢32225与第五磁钢32215充磁方向相反。
进一步地，本实施例中，参见图9，所述第一磁钢32211靠近第二阵列磁钢3222a的一端为N极，所述第一磁钢32211背离第二阵列磁钢3222a的一端为S极，第二磁钢32212靠近第一磁钢32211的一端为N极，第二磁钢32212背离第一磁钢32211的一端为S极，第三磁钢32213靠近第二阵列磁钢3222a的一端为S极，第三磁钢32213背离第二阵列磁钢3222a的一端为N极，第四磁钢32214靠近第三磁钢32213的一端为S极，第四磁钢32214背离第三磁钢32213的一端为N极，第五磁钢32215靠近第二阵列磁钢3222a的一端为N极，第五磁钢32215背离第二阵列磁钢3222a的一端为S极。所述第六磁钢32221靠近第一阵列磁钢3221a的一端为N极，所述第六磁钢32221背离第一阵列磁钢3221a的一端为S极，第七磁钢32222靠近第六磁钢32221的一端为N极，第七磁钢32222背离第六磁钢32221的一端为S极，第八磁钢32223靠近第一阵列磁钢3221a的一端为S极，第八磁钢32223背离第一阵列磁钢3221a的一端为N极，第九磁钢32224靠近第八磁钢32223的一端为S极，第九磁钢32224背离第八磁钢32223的一端为N极，第十磁钢32225靠近第一阵列磁钢3221a的一端为N极，第十磁钢32225背离第一阵列磁钢3221a的一端为S极。基于本实施例阵列磁钢322的磁路配置，以第一磁钢32211、第二磁钢32212及第三磁钢32213组成的磁路为例，其组成了完整的磁路闭环，使得马达100外侧的磁场较弱，而内部用于产生驱动力的磁场加强，漏磁更少，磁能利用率更高，令马达100运行更平稳。
更优地，对线圈23施加交流电，当电流方向如图9所示时，铁芯22与极靴21靠近第一正面磁钢3211的一端呈现S极，铁芯22与极靴21靠近第二正面磁钢3212的一端呈现N极，使得第一正面磁钢3211受到吸力、第二正面磁钢3212受到斥力，从而以电磁力驱动振子30向图9中往右的方向振动。同时，根据左手定则，线圈23在磁场中受到沿图9中往左的安培力，由于力的作用是相互的且线圈23为固定的定子20的一部分，使得振子30的阵列磁钢322受到沿图9中往右的反作用力，从而以安培力驱动振子30向图9中往右的方向振动。同理，当电流的方向改变时，铁芯22和极靴21的极性相应改变，线圈23在磁场中受到的安培力也相应改变，使得施加交流电时，振子30始终受到作用方向相同的安培力和电磁力，从而使马达100具有更大的驱动力。
更优地，本实施例中，参见图3，导磁片33a由第一导磁片331和第二导磁片332组成，第一导磁片331夹设于正面磁钢321a与质量块31a之间，第二导磁片332夹设于阵列磁钢322与质量块31a之间，导磁片33a配合磁钢32提高了磁路的闭合性。
更优地，定子20包括极靴21、铁芯22、线圈23及柔性电路板24，极靴21固定于收容空间313内，铁芯22固定于极靴21上，线圈23环绕铁芯22设置，柔性电路板24固定于外壳10内，且柔性电路板24与线圈23电性连接。极靴21包括第一极靴211及第二极靴212，第一极靴211固定于下盖板11，且第一极靴211位于收容空间313内。第二极靴212与第一极靴211相对设置，铁芯22固定于第一极靴211与第二极靴212之间。
更优地，外壳10包括下盖板11、上盖板12、第一侧壁13、第二侧壁14及贯穿槽15。柔性电路板24的一端固定于下盖板11，柔性电路板24的另一端经贯穿槽15延伸至外壳10外。贯穿槽15形成于第二支撑壁132靠近下盖板11的一端，且贯穿槽15沿沿振子30的振动方向贯穿第二支撑壁132。下盖板11与上盖板12相对，第一侧壁13连接于上盖板12与下盖板11之间，第二侧壁14与第一侧壁13相连接。
更优地，第一侧壁13包括第一支撑壁131及第二支撑壁132，第一支撑壁131沿振子30的振动方向延伸，第二支撑壁132由第一支撑壁131延伸出并沿垂直于振子30的振动方向弯曲延伸。第二侧壁14包括第三支撑壁141及第四支撑壁142，第三支撑壁141沿振子30的振动方向延伸，且第三支撑壁141与第二支撑壁132相连接，第四支撑壁142由第三支撑壁141延伸出，且第四支撑壁142沿垂直于振子30的振动方向弯曲延伸，且第四支撑壁142与第一支撑壁131相连接。
弹簧支架40包括第一弹簧支架41和第二弹簧支架42，第一弹簧支架41和第二弹簧支架42沿振子30的振动方向分别设于质量块31a两侧。
具体地，第一弹簧支架41包括第一弹性支撑部411、第一焊接部412及第二焊接部413，第一弹性支撑部411悬置于外壳10内，第一焊接部412由第一弹性支撑部411靠近第一支撑壁131的一端延伸出，并沿振子30的振动方向弯曲延伸，且第一焊接部412与质量块31a相固定。第二焊接部413由弹性支撑部靠近第三支撑壁141一端延伸出，并沿振子30的振动方向弯曲延伸，且第二焊接部413与第三支撑壁141相固定。
具体地，第二弹簧支架42包括第二弹性支撑部42、第三焊接部421及第四焊接部422，第二弹性支撑部42悬置于外壳10内，第三焊接部421由弹性支撑部靠近第三支撑壁141一端延伸出，并沿振子30的振动方向弯曲延伸，且第三焊接部421与质量块31a相固定，第四焊接部422由弹性支撑部靠近第一支撑壁131一端延伸出，并沿振子30的振动方向弯曲延伸，且第四焊接部422与第一支撑壁131相固定。
更优地，焊片50包括第一焊片51、第二焊片52、第三焊片53及第四焊片54，第一焊片51固定于第一焊接部412远离质量块31a一端，第二焊片52固定于第二焊接部413远离第三支撑壁141一端，第三焊片53固定于第三焊接部421远离质量块31a一端，第四焊片54固定于第四焊接部422远离第一支撑壁131一端。
更优地，限位块60包括第一限位块61和第二限位块62，第一限位块61固定于下盖板11，且第一限位块61间隔设置于第二支撑壁132与质量块31a之间，且第一限位块61与第一弹簧支架41间隔设置。第二限位块62固定于下盖板11，且第二限位块62间隔设置于第四支撑壁142与质量块31a之间，且第二限位块62与第二弹簧支架42间隔设置。限位块60用于限制振子30的振动幅度，本实施例中，第一限位块61位于第二支撑壁132与质量块31a之间靠近第二支撑壁132的位置，第二限位块62位于第四支撑壁142与质量块31a之间靠近第四支撑壁142的位置，使得振子30在安培力和电磁力作用下以较大振幅振动时可以获得较大的振动空间。
实施例二
本实施例二与实施例一的区别在于阵列磁钢322和导磁片33b的配置不同。
更优地，参见图10和图11，本实施例中，所述第一阵列磁钢3221b包括第十一磁钢32216、第十二磁钢32217及第十三磁钢32218，第十一磁钢32216、第十二磁钢32217及第十三磁钢32218沿所述振子30的振动方向依次间隔排列，第十一磁钢32216沿所述振子30的振动方向充磁，第十二磁钢32217沿垂直于所述振子30的振动方向充磁，第十三磁钢32218沿所述振子30的振动方向充磁，且第十三磁钢32218与所述第十一磁钢32216充磁方向相反。
更优地，本实施例中，所述第二阵列磁钢3222b包括第十四磁钢32226、第十五磁钢32227及第十六磁钢32228，第十四磁钢32226、第十五磁钢32227及第十六磁钢32228沿所述振子30的振动方向依次间隔排列。第十四磁钢32226与所述第一磁钢32211充磁方向相同，第十五磁钢32227与所述第十二磁钢32217充磁方向相反，第十六磁钢32228与所述第三磁钢32213充磁方向相同。
本实施例中，本实施例中，所述第十二磁钢32217靠近第二阵列磁钢3222b的一端为S极，所述第十二磁钢32217背离第二阵列磁钢3222b的一端为N极，第十一磁钢32216靠近第十二磁钢32217的一端为S极，第十一磁钢32216背离第十二磁钢32217的一端为N极，第十三磁钢32218靠近第十二磁钢32217的一端为S极，第四磁钢32214背离第十二磁钢32217的一端为N极，所述第十五磁钢32227靠近第一阵列磁钢3221b的一端为S极，所述第十五磁钢32227背离第一阵列磁钢3221b的一端为N极，第十四磁钢32226靠近第十五磁钢32227的一端为S极，第十四磁钢32226背离第十五磁钢32227的一端为N极，第十六磁钢32228靠近第十五磁钢32227的一端为S极，第十六磁钢32228背离第十五磁钢32227的一端为N极。
更优地，本实施例中，导磁片33b由夹设于正面磁钢321b与质量块31b之间的第三导磁片333构成。第三导磁片333包括第一固定部3331及第二固定部3332，第一固定部3331与正面磁钢321b相贴合，第二固定部3332由第一固定部3331沿垂直于振子30的振动方向延伸出，且第二固定部3332与阵列磁钢322相连接，从而通过第三导磁片333配合磁钢32形成封闭的磁路，提高磁路的封闭性。
实施例三
本实施例三与实施例二的区别在于导磁片33c的配置不同。
更优地，参见图12，本实施例中，导磁片33c由第四导磁片334和第五导磁片335构成，第四导磁片334夹设于正面磁钢321c与质量块31c之间，第五导磁片335夹设于阵列磁钢322c与质量块31c之间，且第五导磁片335沿垂直于振子30的振动方向与正面磁钢321c正对。第五导磁片335包括第三固定部3351及第四固定部3352，第三固定部3351沿垂直于振子30的振动方向与阵列磁钢322c相贴合，第四固定部3352由第三固定部3351沿振子30的振动方向弯曲延伸出形成，且第四固定部3352沿垂直于振子30的振动方向与正面磁钢321c正对，从而通过第四导磁片334和第五导磁片335配合磁钢32形成封闭的磁路，提高磁路的封闭性。
借此，本实用新型通过沿所述振子30的振动方向设置与所述定子20正对设置的正面磁钢321a，以提供电磁力驱动马达100的振子30振动，同时通过沿垂直于所述振子30的振动方向设置与所述定子20正对设置的阵列磁钢322，以提供安培力驱动马达100的振子30振动，通过安培力与电磁力的共同作用为马达100提供较大的驱动力，通过磁钢32与导磁片33a形成封闭磁路，增加内部用于产生驱动力的磁钢32，减弱外部磁场，使马达100运行更平稳。
以上的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (24)

  1. 一种振动马达，其包括外壳、装设于所述外壳内的定子、可相对所述定子振动的振子及连接所述外壳与振子的弹簧支架，其特征在于，所述振子包括与所述弹簧支架相固定且中央位置贯通形成收容空间的质量块、阵列设置于收容空间内的磁钢及夹设于所述磁钢与所述质量块之间的导磁片，所述定子包括固定于收容空间内的极靴、固定于极靴的铁芯、环绕所述铁芯的线圈及固定于外壳内并与所述线圈电性连接的柔性电路板，所述磁钢包括沿所述振子的振动方向与所述定子正对设置的正面磁钢及沿垂直于所述振子的振动方向与所述定子正对设置的阵列磁钢。
  2. 根据权利要求1所述的振动马达，其特征在于：所述正面磁钢包括沿所述振子的振动方向充磁的第一正面磁钢及与所述第一正面磁钢的充磁方向相反的第二正面磁钢。
  3. 根据权利要求2所述的振动马达，其特征在于：所述第一正面磁钢与所述第二正面磁钢沿所述振子的振动方向对称设置于所述定子的两侧。
  4. 根据权利要求1所述的振动马达，其特征在于：所述阵列磁钢包括第一阵列磁钢及与所述第一阵列磁钢沿垂直于所述振子的振动方向对称设置于所述定子两侧的第二阵列磁钢。
  5. 根据权利要求4所述的振动马达，其特征在于：所述第一阵列磁钢包括沿所述振子的振动方向依次间隔排列的沿垂直于所述振子的振动方向充磁的第一磁钢、沿所述振子的振动方向充磁的第二磁钢、沿垂直于所述振子的振动方向充磁且与所述第一磁钢充磁相反的第三磁钢、沿所述振子的振动方向充磁且与所述第二磁钢充磁方向相反的第四磁钢及沿垂直所述振子的振动方向充磁且与所述第一磁钢充磁方向相同的第五磁钢。
  6. 根据权利要求5所述的振动马达，其特征在于：所述第二阵列磁钢包括沿所述振子的振动方向依次间隔排列的与所述第一磁钢充磁方向相反的第六磁钢、与所述第二磁钢充磁方向相同的第七磁钢、与所述第三磁钢充磁方向相反的第八磁钢、与所述第四磁钢充磁方向相同的第九磁钢及与所述第五磁钢充磁方向相反的第十磁钢。
  7. 根据权利要求6所述的振动马达，其特征在于：所述导磁片由夹设于所述正面磁钢与质量块之间的第一导磁片及夹设于所述阵列磁钢与所述质量块之间的第二导磁片构成。
  8. 根据权利要求5所述的振动马达，其特征在于：所述第一阵列磁钢包括沿所述振子的振动方向依次间隔排列的沿所述振子的振动方向充磁的第十一磁钢、沿垂直于所述振子的振动方向充磁的第十二磁钢及沿所述振子的振动方向充磁且与所述第十一磁钢充磁方向相反的第十三磁钢。
  9. 根据权利要求8所述的振动马达，其特征在于：所述第二阵列磁钢包括沿所述振子的振动方向依次间隔排列的与所述第一磁钢充磁方向相同的第十四磁钢、与所述第十二磁钢充磁方向相反的第十五磁钢及与所述第三磁钢充磁方向相同的第十六磁钢。
  10. 根据权利要求9所述的振动马达，其特征在于：所述导磁片由夹设于所述正面磁钢与所述质量块之间的第三导磁片构成。
  11. 根据权利要求10所述的振动马达，其特征在于：所述第三导磁片包括与所述正面磁钢相贴合的第一固定部及由第一固定部沿垂直于所述振子的振动方向延伸并与所述阵列磁钢相连接的第二固定部。
  12. 根据权利要求9所述的振动马达，其特征在于：所述导磁片由夹设于所述正面磁钢与所述质量块之间的第四导磁片及夹设于所述阵列磁钢与所述质量块之间且沿垂直于所述振子的振动方向与所述正面磁钢正对的第五导磁片构成。
  13. 根据权利要求12所述的振动马达，其特征在于：所述第五导磁片包括沿垂直于所述振子的振动方向与所述阵列磁钢相贴合的第三固定部及由第三固定部沿所述振子的振动方向弯曲延伸出形成并沿垂直于所述振子的振动方向与所述正面磁钢正对的第四固定部。
  14. 根据权利要求3所述的振动马达，其特征在于：所述外壳包括固定所述柔性电路板的下盖板、与所述下盖板相对的上盖板、连接于所述上盖板与所述下盖板之间的第一侧壁及与所述第一侧壁相连接的第二侧壁。
  15. 根据权利要求14所述的振动马达，其特征在于：所述第一侧壁包括沿所述振子的振动方向延伸的第一支撑壁及由第一支撑壁延伸出并沿垂直于所述振子的振动方向弯曲延伸的第二支撑壁，所述第二侧壁包括沿所述振子的振动方向延伸且与所述第二支撑壁相连接的第三支撑壁及由第三支撑壁延伸出并沿垂直于所述振子的振动方向弯曲延伸且与所述第一支撑壁相连接的第四支撑壁。
  16. 根据权利要求15所述的振动马达，其特征在于：所述弹簧支架包括沿所述振子的振动方向分别设于所述质量块两侧的第一弹簧支架和第二弹簧支架。
  17. 根据权利要求16所述的振动马达，其特征在于：所述第一弹簧支架包括悬置于外壳内的第一弹性支撑部、由所述第一弹性支撑部靠近所述第一支撑壁的一端延伸出并沿所述振子的振动方向弯曲延伸且与所述质量块相固定的第一焊接部及由所述弹性支撑部靠近所述第三支撑壁一端延伸出并沿所述振子的振动方向弯曲延伸且与所述第三支撑壁相固定的第二焊接部。
  18. 根据权利要求17所述的振动马达，其特征在于：所述第二弹簧支架包括悬置于外壳内的第二弹性支撑部、由所述弹性支撑部靠近所述第三支撑壁一端延伸出并沿所述振子的振动方向弯曲延伸且与所述质量块相固定的第三焊接部及由所述弹性支撑部靠近所述第一支撑壁一端延伸出并沿所述振子的振动方向弯曲延伸且与所述第一支撑壁相固定的第四焊接部。
  19. 根据权利要求18所述的振动马达，其特征在于：所述马达还包括固定于弹簧支架的焊片，所述焊片包括固定于所述第一焊接部远离所述质量块一端的第一焊片、固定于所述第二焊接部远离所述第三支撑壁一端的第二焊片、固定于所述第三焊接部远离所述质量块一端的第三焊片及固定于所述第四焊接部远离所述第一支撑壁一端的第四焊片。
  20. 根据权利要求19所述的振动马达，其特征在于：所述质量块还包括外周侧、由外周侧向靠近所述第一支撑壁延伸形成且与所述第一焊接部相固定的第一凸起部、由外周侧向靠近所述第三支撑壁延伸形成且与所述第三焊接部相固定的第二凸起部及围绕形成所述收容空间的内周侧，所述导磁片夹设于所述磁钢与所述内周侧之间。
  21. 根据权利要求15所述的振动马达，其特征在于：所述马达还包括与所述质量块间隔设置的限位块，所述限位块包括固定于所述下盖板且间隔设置所述第二支撑壁与所述质量块之间的第一限位块及固定于所述下盖板且间隔设置于所述第四支撑壁与所述质量块之间的第二限位块，所述第一限位块与所述第二限位块分别与所述弹簧支架间隔设置。
  22. 根据权利要求21所述的振动马达，其特征在于：所述第一限位块位于第二支撑壁与质量块之间靠近所述第二支撑壁的位置，所述第二限位块位于所述第四支撑壁与所述质量块之间靠近所述第四支撑壁的位置。
  23. 根据权利要求22所述的振动马达，其特征在于：所述第二支撑壁靠近所述下盖板的一端沿所述振子的振动方向贯穿形成贯穿槽，所述柔性电路板经贯穿槽延伸出外壳。
  24. 根据权利要求14所述的振动马达，其特征在于：所述极靴包括固定于所述下盖板且位于所述收容空间内的第一极靴及与所述第一极靴相对设置的第二极靴，所述铁芯固定于所述第一极靴与第二极靴之间。
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JP2014023238A (ja) * 2012-07-17 2014-02-03 Minebea Co Ltd 振動発生器
CN204425641U (zh) * 2015-01-29 2015-06-24 瑞声科技（南京）有限公司 电磁扬声器
CN106817006A (zh) * 2017-01-20 2017-06-09 瑞声科技(新加坡)有限公司 振动电机
CN207021881U (zh) * 2017-01-20 2018-02-16 瑞声科技（南京）有限公司 线性振动电机

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JP2014023238A (ja) * 2012-07-17 2014-02-03 Minebea Co Ltd 振動発生器
CN204425641U (zh) * 2015-01-29 2015-06-24 瑞声科技（南京）有限公司 电磁扬声器
CN106817006A (zh) * 2017-01-20 2017-06-09 瑞声科技(新加坡)有限公司 振动电机
CN207021881U (zh) * 2017-01-20 2018-02-16 瑞声科技（南京）有限公司 线性振动电机

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