WO2022006924A1 - Vibrating motor - Google Patents

Abstract

A vibrating motor (100) comprises a housing (10), a stator (20) mounted in the housing, a vibrator (30) capable of vibrating relative to the stator, and a spring support frame (40) for connecting the housing to the vibrator. The vibrator comprises a mass block (31a) fixed to the spring support frame and having an accommodation space (313) located in a central position and passing through the mass block (31a), magnetic steel (32) forming an array in the accommodation space, and magnetically permeable pieces (33a) sandwiched between the magnetic steel and the mass block. Frontal magnetic steel (321a) directly opposite the stator is provided in a vibration direction of the vibrator so as to provide electromagnetic force to drive the vibrator of the motor to vibrate. In addition, arrayed magnetic steel (322) directly opposite the stator is provided in a direction perpendicular to the vibration direction of the vibrator so as to provide ampere force to drive the vibrator of the motor to vibrate. A combination of the ampere force and the electromagnetic force provides a greater driving force for the motor. The magnetic steel and the magnetically permeable pieces form a closed magnetic circuit, and the internal magnetic steel used to generate driving force is increased, thereby achieving stable operation of the motor.

Description

a vibration motor technical field

The utility model relates to the field of motors, in particular to a linear vibration motor.

Background technique

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. There are several types of motors such as cylindrical iron core motors, hollow cup motors and linear vibration motors.

technical problem

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.

technical solutions

The purpose of the present invention is to provide a vibration motor with simple structure and large driving force.

The technical solution of the present invention is as follows: 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, and 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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 same seventh magnet, the eighth magnet with the opposite magnetization direction of the third magnet, the ninth magnet with the same magnetization direction as the fourth magnet, and the fifth magnet magnetized Tenth magnet in the opposite direction.

More preferably, 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.

More preferably, 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 twelfth magnet and the thirteenth magnet that is magnetized along the vibration direction of the vibrator and opposite to the eleventh magnet.

More preferably, 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. A fifteenth magnet with opposite magnetic directions and a sixteenth magnet with the same magnetization direction as the third magnet.

More preferably, the magnetic conductive sheet is composed of a third magnetic conductive sheet sandwiched between the front magnetic steel and the mass block.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

More preferably, 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.

beneficial effect

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.

Description of drawings

FIG. 1 is a schematic three-dimensional structural diagram of a vibration motor according to an embodiment of the present invention.

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.

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.

11 is a schematic diagram of the vibration principle of the vibration motor according to the second embodiment of the present invention.

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.

BEST MODE FOR CARRYING OUT THE INVENTION

The present utility model will be further described below with reference to the accompanying drawings and embodiments.

Example 1

The first embodiment provides a vibration motor 100. Referring to FIGS. 1 to 12, 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 . Specifically, the stator 20 is installed in the casing 10 , the vibrator 30 can vibrate relative to the stator 20 , and the spring bracket 40 connects the casing 10 and the vibrator 30 .

More preferably, referring to FIG. 2 , 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.

More preferably, referring to FIGS. 2 to 8 , 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 .

More preferably, referring to FIG. 2 to FIG. 8 , 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 .

Specifically, 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 , and the magnetization direction of the second front magnetic steel 3212 is opposite to that of the first front magnetic steel 3211 . In this embodiment, 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, and 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.

More preferably, 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.

Specifically, in this embodiment, referring to FIG. 3 , 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 , and 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, and the fifth magnetic steel 32215 is magnetized along the vibration direction perpendicular to the vibrator 30 , and the fifth magnetic steel 32215 is magnetized in the same direction as the first magnetic steel 32211 .

Specifically, in this embodiment, referring to FIG. 3 , 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, and 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.

Further, in this embodiment, referring to FIG. 9 , 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, and 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, and 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, and 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, and 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, and the eighth magnet 32223 is away from the first One end of the array magnet 3221a is the N 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, and the tenth magnet 32225 is close to One end of the first array magnet 3221a is the N pole, and one end of the tenth magnet 32225 away from the first array magnet 3221a is the S pole. Based on the magnetic circuit configuration of the array magnetic steel 322 in this embodiment, taking 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.

More preferably, when alternating current is applied to the coil 23, when the current direction is shown in FIG. 9, 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. At the same time, according to the left-hand rule, the coil 23 is subjected to the ampere force in the magnetic field along the leftward direction in FIG. 9 . Since the force is mutual and the coil 23 is a fixed part of the stator 20, 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. Similarly, when 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.

More preferably, in this embodiment, referring to FIG. 3 , 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. In between, 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.

More preferably, 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 .

More preferably, 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 .

More preferably, 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 .

Specifically, 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 .

Specifically, 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, and 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 .

More preferably, 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 , and the fourth welding piece 54 is fixed to the fourth welding portion 422 One end away from the first support wall 131 .

More preferably, 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 . In this embodiment, 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.

Embodiment 2

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.

More preferably, referring to FIG. 10 and FIG. 11 , in this embodiment, 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. 32217 is magnetized along the vibration direction perpendicular to 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.

More preferably, in this embodiment, 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.

In this embodiment, in this embodiment, the end of the twelfth magnetic steel 32217 close to the second array magnetic steel 3222b is S pole, and 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, and 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, and the fourteenth magnet 32226 away from the fifteenth magnet 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, and the end of the sixteenth magnet 32228 away from the fifteenth magnet 32227 is the N pole.

More preferably, in this embodiment, 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.

Embodiment 3

The difference between the third embodiment and the second embodiment is that the configuration of the magnetic conductive sheet 33c is different.

More preferably, referring to FIG. 12, in this embodiment, 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. In between, 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.

In this way, 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.

The above are only the embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these belong to the present utility model. A new range of protection.

Claims (24)

1. 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 bracket connecting the casing and the vibrator, wherein the vibrator includes and the spring The brackets are fixed and the central position penetrates through the mass block forming the accommodation space, the magnetic steel array arranged in the accommodation space, and the magnetic conductive sheet sandwiched between the magnetic steel and the mass block. A pole piece in the space, an iron core fixed to 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 vibration along the vibrator The front magnetic steel arranged in the direction opposite to the stator and the array magnetic steel arranged opposite to the stator along the vibration direction perpendicular to the vibrator.
2. The vibration motor according to claim 1, wherein the front magnetic steel comprises a first front magnetic steel magnetized along the vibration direction of the vibrator and a magnetic steel opposite to the magnetization direction of the first front magnetic steel Second positive magnet.
3. The vibration motor according to claim 2, wherein 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.
4. The vibration motor according to claim 1, wherein the array magnetic steel comprises a first array magnetic steel, and the first array magnetic steel is symmetrically arranged on both sides of the stator along a vibration direction perpendicular to the vibrator. side of the second array of magnets.
5. The vibration motor according to claim 4, wherein the first array of magnetic steels comprises first magnetic steels magnetized along the vibration direction perpendicular to the vibrator, arranged at intervals along the vibration direction of the vibrator, The second magnetic steel magnetized along the vibration direction of the vibrator, the third magnetic steel magnetized along the vibration direction perpendicular to the vibrator and opposite to the first magnetic steel, along the vibration direction of the vibrator A fourth magnetic steel that is magnetized and opposite to the second magnetic steel, and a fifth magnetic steel that is magnetized along the vibration direction perpendicular to the vibrator and has the same magnetizing direction as the first magnetic steel.
6. The vibration motor according to claim 5, wherein the second array of magnetic steels comprises sixth magnetic steels, which are arranged at intervals along the vibration direction of the vibrator and opposite to the magnetizing direction of the first magnetic steel, A seventh magnet with the same magnetization direction as the second magnet, an eighth magnet with the opposite magnetization direction of the third magnet, and a ninth magnet with the same magnetization direction as the fourth magnet and a tenth magnet steel opposite to the magnetization direction of the fifth magnet steel.
7. The vibration motor according to claim 6, wherein the magnetic conductive sheet is composed of a first magnetic conductive sheet sandwiched between the front magnetic steel and the mass block, and a first magnetic conductive sheet sandwiched between the array magnetic steel and the mass block. The second magnetic conductive sheet between the mass blocks is formed.
8. The vibration motor according to claim 5, wherein the first array of magnetic steels comprises eleventh magnetic steels that are magnetized along the vibration direction of the vibrator and arranged at intervals along the vibration direction of the vibrator. A twelfth magnetic steel magnetized perpendicular to the vibration direction of the vibrator and a thirteenth magnetic steel magnetized along the vibration direction of the vibrator and opposite to the eleventh magnetic steel.
9. The vibration motor according to claim 8, wherein the second array of magnetic steels comprises fourteenth magnetic steels arranged at intervals along the vibration direction of the vibrator and having the same magnetizing direction as the first magnetic steels , a fifteenth magnet with the opposite magnetization direction of the twelfth magnet, and a sixteenth magnet with the same magnetization direction as the third magnet.
10. The vibration motor according to claim 9, wherein the magnetic conductive sheet is composed of a third magnetic conductive sheet sandwiched between the front magnetic steel and the mass block.
11. The vibration motor according to claim 10, wherein the third magnetic conductive sheet comprises a first fixing portion that is attached to the front magnetic steel, and the first fixing portion vibrates perpendicular to the vibrator. a second fixing part extending in the direction and connected with the array magnetic steel.
12. The vibration motor according to claim 9, wherein 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 A fifth magnetic conductive sheet is formed between the mass block and perpendicular to the vibration direction of the vibrator and facing the front magnetic steel.
13. The vibration motor according to claim 12, wherein the fifth magnetic conductive sheet comprises a third fixing part that is attached to the array magnetic steel along a vibration direction perpendicular to the vibrator, and a third fixing part The part is bent and extended along the vibration direction of the vibrator to form a fourth fixing part which is perpendicular to the vibration direction of the vibrator and faces the front magnetic steel.
14. The vibration motor according to claim 3, wherein the casing comprises a lower cover plate for fixing the flexible circuit board, an upper cover plate opposite to the lower cover plate, and a lower cover plate connected to the upper cover plate and the The first side wall between the lower cover plates and the second side wall connected with the first side wall.
15. The vibration motor according to claim 14, wherein the first side wall comprises a first support wall extending along the vibration direction of the vibrator, and a first support wall extending from the first support wall and extending along a direction perpendicular to the vibrator. The second support wall is bent and extended in the vibration direction, and 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 extending along the vibration direction of the vibrator. The fourth support wall is bent and extended perpendicular to the vibration direction of the vibrator and is connected with the first support wall.
16. The vibration motor according to claim 15, wherein the spring support comprises a first spring support and a second spring support respectively disposed on both sides of the mass block along the vibration direction of the vibrator.
17. The vibration motor of claim 16, wherein the first spring bracket comprises a first elastic support part suspended in the casing, and an end of the first elastic support part close to the first support wall The first welding part extending out and bending along the vibration direction of the vibrator and being fixed with the mass block; The second welding portion is bent and extended and fixed with the third support wall.
18. The vibration motor as claimed in claim 17, wherein the second spring bracket comprises 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 extending from the end of the elastic support part. The third welding part, which is bent and extended along the vibration direction of the vibrator and is fixed with the mass block; a fourth welding portion fixed with the first support wall.
19. The vibration motor according to claim 18, wherein the motor further comprises a welding piece fixed to the spring bracket, the welding piece comprising a first welding piece fixed to an end of the first welding part away from the mass block sheet, a second welding piece fixed on one end of the second welding part away from the third support wall, a third welding piece fixed at one end of the third welding part away from the mass block, and a third welding piece fixed on the fourth welding part The welding portion is away from the fourth welding piece at one end of the first support wall.
20. The vibration motor according to claim 19, wherein the mass block further comprises an outer peripheral side, a first protrusion extending from the outer peripheral side toward the first support wall and fixed with the first welding portion a raised portion, a second raised portion extending from the outer peripheral side close to the third support wall and fixed with the third welding portion, and an inner peripheral side surrounding the receiving space, the magnetic conductive sheet clamps provided between the magnetic steel and the inner peripheral side.
21. The vibration motor according to claim 15, wherein the motor further comprises a limit block arranged at intervals from the mass block, and the limit block includes a stop block fixed on the lower cover and arranged with the first A first limiting block between the two supporting walls and the mass block and a second limiting block fixed to the lower cover plate and spaced between the fourth supporting wall and the mass block, the The first limiting block and the second limiting block are respectively arranged at intervals from the spring support.
22. The vibration motor according to claim 21, wherein 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 at a position between the second support wall and the mass block. A position between the fourth support wall and the mass block is close to the fourth support wall.
23. The vibration motor according to claim 22, wherein 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 through the through groove. shell.
24. The vibration motor of claim 14, wherein the pole piece comprises a first pole piece fixed to the lower cover plate and located in the receiving space and a first pole piece disposed opposite to the first pole piece Two pole pieces, the iron core is fixed between the first pole piece and the second pole piece.