WO2022206012A1 - 线性振动马达 - Google Patents
线性振动马达 Download PDFInfo
- Publication number
- WO2022206012A1 WO2022206012A1 PCT/CN2021/136604 CN2021136604W WO2022206012A1 WO 2022206012 A1 WO2022206012 A1 WO 2022206012A1 CN 2021136604 W CN2021136604 W CN 2021136604W WO 2022206012 A1 WO2022206012 A1 WO 2022206012A1
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- WO
- WIPO (PCT)
- Prior art keywords
- damping
- magnetic steel
- assembly
- magnet
- conductor
- Prior art date
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- 238000013016 damping Methods 0.000 claims abstract description 170
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 119
- 239000010959 steel Substances 0.000 claims abstract description 119
- 239000004020 conductor Substances 0.000 claims abstract description 67
- 230000005415 magnetization Effects 0.000 claims description 38
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000005389 magnetism Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
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- 238000009434 installation Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
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Classifications
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- 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
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Definitions
- the invention relates to the technical field of linear vibration motors, in particular to a linear vibration motor.
- the main purpose of the present invention is to provide a linear vibration motor, which aims to shorten the braking time of the vibrator assembly in the linear vibration motor, and provide users with a better tactile experience.
- An embodiment of the present invention provides a linear vibration motor, the linear vibration motor includes:
- stator assembly accommodated in the accommodating cavity and fixed with the housing
- a vibrator assembly suspended in the receiving cavity and adapted to the stator assembly to vibrate under the driving of the stator assembly
- the electromagnetic damping assembly is accommodated in the receiving cavity, and the electromagnetic damping assembly includes a corresponding damping magnetic steel and a conductor;
- the conductor is fixed on the vibrator assembly
- the damping magnetic steel is fixed on the cavity wall of the receiving cavity, and is located on the side of the conductor away from the vibrator assembly, so that the conductor follows the vibrator assembly. The vibration of the vibrator assembly produces damping.
- the damping magnetic steel includes a first damping magnetic steel and a second damping magnetic steel, and the first damping magnetic steel and the second damping magnetic steel are spaced apart along the vibration direction of the vibrator assembly set up;
- the magnetization direction of the first damping magnet and the magnetization direction of the second damping magnet are both arranged at an included angle with the vibration direction of the vibrator assembly, and the first damping magnet is close to the conductor.
- the magnetism of one end of the second damping magnet is opposite to the magnetism of the end of the second damping magnet near the conductor;
- Both the first damping magnet and the second damping magnet are located on a side of the conductor away from the vibrator assembly.
- the magnetization direction of the first damping magnetic steel and the magnetization direction of the second damping magnetic steel are both set perpendicular to the vibration direction of the vibrator assembly.
- the conductor is a sheet-like structure, a plate-like structure, a block-like structure or a ring structure;
- the material of the conductor is copper or soft magnetic material.
- a cavity wall of the receiving cavity on which the damping magnetic steel is fixed is formed with a reinforcing part, and the first damping magnetic steel and the second damping magnetic steel are respectively located in the reinforcing part. both sides of the part.
- the reinforcing part is a groove body recessed from the outer surface of the casing into the receiving cavity.
- the vibrator assembly includes a mass block suspended in the receiving cavity, the mass block has a coupling surface and a damping surface disposed opposite to each other, the coupling surface is provided with a mounting hole, the the conductor is fixed on the damping surface;
- the vibrator assembly further includes a first driving magnetic steel and a second driving magnetic steel, the first driving magnetic steel and the second driving magnetic steel are arranged side by side along the vibration direction of the vibrator assembly, and both are fixed on the in the mounting hole;
- the stator assembly includes a coil, the coil is arranged between the coupling surface and the housing, and is fixed to the housing, the coil is arranged toward the mounting hole, and is connected to the first driving magnet.
- Steel is coupled to the second drive magnet to drive the vibrator assembly to vibrate by being coupled to the first drive magnet and the second drive magnet.
- the coupling surface is concavely provided with a sink
- the installation hole is opened on the bottom wall of the sink
- one end of the coil facing the installation hole extends into the sink , and is spaced apart from the bottom wall of the sinking platform.
- the installation hole penetrates through the damping surface
- the vibrator assembly further includes a magnetic conductive block fixed in the installation hole, and the magnetic conductive block is located on the first driving magnetic steel and the side of the second driving magnet facing away from the coil.
- surfaces of the magnetic conductive block facing away from the first driving magnet steel and the second driving magnet steel are flush with the damping surface.
- the vibrator assembly when the linear vibration motor is running, the vibrator assembly is adapted to the stator assembly, and can vibrate under the drive of the stator assembly; at this time, the conductor in the electromagnetic damping assembly is fixed on the vibrator On the component, it can vibrate together with the vibrator component; at this time, since the damping magnetic steel in the electromagnetic damping component is fixed on the shell and is matched with the conductor in the electromagnetic damping component, the conductor in the electromagnetic damping component can be adjusted.
- the vibration of the linear vibration motor is damped, thereby damping the vibration of the vibrator assembly, thereby shortening the braking time of the vibrator assembly in the linear vibration motor, and giving the user a better tactile experience.
- FIG. 1 is an exploded view of an embodiment of a linear vibration motor of the present invention
- Fig. 2 is the assembly structure schematic diagram of the linear vibration motor in Fig. 1;
- FIG. 3 is a cross-sectional view of the linear vibration motor in FIG. 2 cut along a horizontal direction.
- the terms "connected”, “fixed” and the like should be understood in a broad sense, for example, “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
- “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
- the present invention proposes a linear vibration motor, which aims to shorten the braking time of the vibrator assembly in the linear vibration motor and provide users with a better tactile experience.
- the linear vibration motor proposed by the present invention can be applied to electronic equipment (including consumer electronic products), and the electronic equipment can be but not limited to mobile phones, notebook computers, tablet computers, personal digital assistants (Personal Digital Assistant, PDA). ), e-book reader, MP3 (Motion Picture Experts Compression Standard Audio Layer 3, Moving Picture Experts Group Audio Layer III) player, MP4 (Motion Picture Experts Compression Standard Audio Layer 4, Moving Picture Experts Group Audio Layer IV) player , wearable devices, navigators, handheld game consoles, etc.
- MP3 Motion Picture Experts Compression Standard Audio Layer 3, Moving Picture Experts Group Audio Layer III
- MP4 Motion Picture Experts Compression Standard Audio Layer 4, Moving Picture Experts Group Audio Layer IV
- wearable devices navigators, handheld game consoles, etc.
- the linear vibration motor 100 includes:
- the housing 10 has a receiving cavity 10a;
- the stator assembly 30 is accommodated in the accommodating cavity 10a and fixed with the housing 10;
- the vibrator assembly 50 is suspended in the receiving cavity 10a and is adapted to the stator assembly 30 to vibrate under the driving of the stator assembly 30;
- the electromagnetic damping assembly 70 is accommodated in the receiving cavity 10a, and the electromagnetic damping assembly 70 includes a corresponding damping magnet 71 and a conductor 73;
- the conductor 73 is fixed to the vibrator assembly 50, and the damping magnetic steel 71 is fixed to the cavity wall of the receiving cavity 10a, and is located on the side of the conductor 73 away from the vibrator assembly 50, so as to The conductor 73 generates damping with the vibration of the vibrator assembly 50 .
- the casing 10 is substantially in the shape of a rectangular parallelepiped, so that the accommodating cavity 10a in the housing 10 has a top wall, a bottom wall, a left side wall, a right side wall, a rear side wall and a front side wall.
- the left end of the vibrator assembly 50 is elastically connected to the left side wall of the accommodating cavity 10a through the elastic member 90
- the right end of the vibrator assembly 50 is elastically connected to the right side wall of the accommodating cavity 10a through the elastic member 90 .
- stator assembly 30 is fixed on the bottom wall of the accommodating cavity 10a, and is disposed toward the vibrator assembly 50 to fit and couple with the vibrator assembly 50, so that the vibrator assembly 50 can be driven by the stator assembly 30 in the left-right direction Vibration occurs.
- the damping magnet 71 of the electromagnetic damping assembly 70 is fixed on the top wall of the receiving cavity 10a, a surface of the vibrator assembly 50 (ie, the damping surface 513 in the following) is disposed facing the top wall of the receiving cavity 10a, and the electromagnetic damping assembly 70
- the conductor 73 is fixed on the surface of the vibrator assembly 50 facing the top wall of the receiving cavity 10a (that is, the damping surface 513 in the following), and is set toward the damping magnet 71 to fit and couple with the damping magnet 71, so that the The conductor 73 can be damped by the damping magnet 71 when vibrating with the vibrator assembly 50 .
- the vibrator assembly 50 when the linear vibration motor 100 is running, the vibrator assembly 50 can vibrate under the driving of the stator assembly 30 because it is adapted to the stator assembly 30; at this time, the electromagnetic damping Since the conductor 73 in the assembly 70 is fixed on the vibrator assembly 50, it can vibrate together with the vibrator assembly 50; at this time, the damping magnet 71 in the electromagnetic damping assembly 70 is fixed on the housing 10 and is connected with the electromagnetic damping assembly 70.
- the conductors 73 in the electromagnetic damping assembly 70 can be adapted to damp the vibration of the conductors 73 in the electromagnetic damping assembly 70, thereby damping the vibration of the vibrator assembly 50, thereby shortening the braking time of the vibrator assembly 50 in the linear vibration motor 100, giving Better tactile experience for users.
- the design of fixing the conductor 73 of the electromagnetic damping assembly 70 on the vibrator assembly 50 can also reduce the weight of the mass block 51 in the vibrator assembly 50, reduce the material input of the mass block 51, avoid material waste, and save manufacturing costs.
- the conductor 73 of the electromagnetic damping assembly 70 it can be fixed to the vibrator assembly 50 by, for example, gluing, welding or the like.
- the damping magnetic steel 71 may be configured with two pieces, the left one is defined as the first magnetic steel, and the right one is defined as the second magnetic steel, and the two are distributed at a certain safety distance in the left and right directions, In order to ensure that the two do not affect each other; and, the magnetization direction of the first magnetic steel can be horizontally left or right; the magnetization direction of the second magnetic steel can be horizontally left or right.
- the conductor 73 can be configured with two pieces, the left piece is defined as the first conductor, and the right piece is defined as the second conductor, and the two are distributed at a certain safety distance in the left and right direction; and, the first conductor and the second conductor are arranged between the first magnet steel and the second magnet steel.
- FIGS. 1 to 3 also provide another configuration method for the electromagnetic damping assembly 70, which is specifically as follows:
- the damping magnetic steel 71 includes a first damping magnetic steel 711 and a second damping magnetic steel 713, and the first damping magnetic steel 711 and the second damping magnetic steel 713 are arranged at intervals along the vibration direction of the vibrator assembly 50;
- the magnetization direction of the first damping magnetic steel 711 and the magnetization direction of the second damping magnetic steel 713 are both arranged at an included angle with the vibration direction of the vibrator assembly 50 , and the first damping magnetic steel 711 is arranged at an angle.
- the magnetism of one end close to the conductor 73 is opposite to the magnetism of the end close to the conductor 73 of the second damping magnet 713;
- Both the first damping magnetic steel 711 and the second damping magnetic steel 713 are located on the side of the conductor 73 away from the vibrator assembly 50 .
- the first damping magnetic steel 711 and the second damping magnetic steel 713 are respectively located on the left side of the receiving cavity 10a and on the right side of the receiving cavity 10a, and the two are distributed at a certain safety distance in the left and right direction, so as to It is ensured that the two damping magnets do not affect each other, and the stability and reliability of the electromagnetic damping assembly 70 are improved.
- the first damping magnetic steel 711 and the second damping magnetic steel 713 are both located above the conductor 73; that is, the lower surface of the first damping magnetic steel 711 is set higher than the upper surface of the conductor 73, and the lower surface of the second damping magnetic steel 713 The surface is set higher than the upper surface of the conductor 73 .
- the magnetization direction of the first damping magnet 711 and the magnetization direction of the second damping magnet 713 may have the following specific forms:
- the magnetization direction of the first damping magnet 711 is inclined to the upper left, and the magnetization direction of the second damping magnet 713 is inclined to the left;
- the magnetization direction of the first damping magnetic steel 711 is inclined to the lower right, and the magnetization direction of the second damping magnetic steel 713 is inclined to the upper left;
- the magnetization direction of the first damping magnetic steel 711 is inclined downward to the right, and the magnetization direction of the second damping magnetic steel 713 is inclined upward to the right;
- the conductor 73 when it is coupled and adapted with the first damping magnetic steel 711 , it is also coupled and adapted with the second damping magnetic steel 713 .
- the conductor 73 can simultaneously obtain the damping effect of the first damping magnetic steel 711 and the damping effect of the second damping magnetic steel 713, that is, A conductor 73 can damp with two damping magnets at the same time, so that the damping effect obtained by the vibrator assembly 50 is better.
- both the first damping magnet 711 and the second damping magnet 713 are located on the side of the conductor 73 away from the vibrator assembly 50 , the conductor 73 moves with the vibrator assembly 50 , whether it moves to the left or to the right.
- the collision with the damping magnetic steel not only improves the safety and reliability of the electromagnetic damping assembly 70 during operation, but also helps to obtain a longer damping distance; in this way, on the one hand, it is beneficial to improve the vibration performance of the vibrator assembly 50, and on the other hand It is beneficial to obtain better damping effect, thereby giving users a better tactile experience.
- the conductor 73 may be a sheet-like structure, a plate-like structure, a block-like structure or a ring-like structure.
- the electromagnetic damping component 70 there are other more effective and reasonable configuration manners for the electromagnetic damping component 70, which can be implemented by those skilled in the art according to actual application conditions, and details are not repeated here.
- the material of the conductor 73 is copper or soft magnetic material. In this way, not only has strong adaptability to different ambient temperatures, but also better response stability; but also when the linear vibration motor 100 is not running, since it is not magnetic, the magnetic balance inside the linear vibration motor 100 will not be destroyed.
- the magnetization direction of the first damping magnet 711 (as shown by the dotted arrow in FIG. 2 ) and the second damping magnet 711
- the magnetization directions of the magnetic steel 713 (as shown by the dotted arrows in FIG. 2 ) are all set perpendicular to the vibration direction of the vibrator assembly 50 . It can be understood that, in such a configuration, the comprehensive damping effect obtained by the conductor 73 can be in the horizontal direction, thereby reducing the probability of the conductor 73 shifting in the vertical direction and reducing the vertical direction of the vibrator assembly 50. The probability of deviation occurs, thereby improving the vibration performance of the vibrator assembly 50 and giving the user a better tactile experience.
- a reinforcement portion 111 is formed on the side cavity wall of the receiving cavity 10a on which the damping magnetic steel 71 is fixed.
- the damping magnetic steel 711 and the second damping magnetic steel 713 are respectively located on both sides of the reinforcing part 111 .
- the reinforcing part 111 is a groove body recessed from the outer surface of the housing 10 to the receiving cavity 10a, that is, the outer surface of the top wall of the receiving cavity 10a is recessed into the receiving cavity 10a to form a groove body; , the first damping magnet 711 is located on the left side of the tank body, and the second damping magnet steel 713 is located on the right side of the tank body.
- the setting of this embodiment can increase the strength of the casing 10 and increase the deformation resistance of the casing 10, thereby increasing the stability of the damping magnetic steel in the destructive process such as falling, and ensuring the stable operation of the internal structure. properties and improve product reliability.
- the reinforcing part 111 is a concave groove body, which can also ensure the flatness of the outer surface of the housing 10 and reduce the assembly difficulty of the linear vibration motor 100 .
- the reinforcing part 111 may also be in other structural forms, for example, the reinforcing part 111 is a convex groove body.
- the vibrator assembly 50 includes a mass block 51 suspended in the receiving cavity 10a, and the mass block 51 has a back-to-back arrangement A coupling surface 511 and a damping surface 513, the coupling surface 511 is provided with a mounting hole 515, and the conductor 73 is fixed on the damping surface 513;
- the vibrator assembly 50 further includes a first driving magnetic steel 53 and a second driving magnetic steel 55, and the first driving magnetic steel 53 and the second driving magnetic steel 55 are arranged side by side along the vibration direction of the vibrator assembly 50, and are all fixed in the mounting hole 515;
- the stator assembly 30 includes a coil 31, the coil 31 is arranged between the coupling surface 511 and the housing 10, and is fixed to the housing 10, the coil 31 is arranged toward the mounting hole 515, and coupled with the first driving magnet 53 and the second driving magnet 55 , so as to drive the vibrator assembly 50 to vibrate by being coupled with the first driving magnet 53 and the second driving magnet 55 .
- the coupling surface 511 of the mass block 51 is disposed facing the bottom wall of the receiving cavity 10a, and the damping surface 513 of the mass block 51 is disposed facing the top wall of the receiving cavity 10a.
- the coil 31 is fixed on the bottom wall of the accommodating cavity 10a, and is arranged in such a way that its axis is perpendicular to the bottom wall of the accommodating cavity 10a; that is, the lower end of the coil 31 is fixed on the bottom wall of the accommodating cavity 10a, and the fixed upper end faces the mass
- the coupling surface 511 of the block 51 is provided.
- a mounting hole 515 is opened on the coupling surface 511 of the mass block 51 at a position opposite to the coil 31 , and the first driving magnetic steel 53 and the second driving magnetic steel 55 are fixed in the mounting hole 515 and are arranged side by side in the left-right direction. set up.
- the magnetization direction of the first driving magnet 53 is vertically downward (as shown by the dashed arrow in FIG. 2 )
- the magnetization direction of the second driving magnet 55 is vertically upward (as shown by the dashed arrow in FIG. 2 ). Show).
- a horizontal left (or right) force can be applied to the first driving magnetic steel 53, and a horizontal left (or right) force can be applied to the second driving magnetic steel 55 at the same time. , thereby driving the first driving magnetic steel 53 , the second driving magnetic steel 55 and the mass 51 to vibrate in the left-right direction.
- the overall mass of the vibrator assembly 50 can also be increased, thereby improving the vibration performance of the vibrator assembly 50 .
- the magnetization direction of the first drive magnet 53 and the magnetization direction of the second drive magnet 55 can also be configured in other forms, for example: the magnetization direction of the first drive magnet 53 Vertically upward, the magnetization direction of the second driving magnet 55 is vertically downward.
- the effective magnetic field lines passing through the coil 31 can be made more dense, thereby improving the effect of the stator assembly 30 on the vibrator assembly.
- the driving ability of the vibrator assembly 50 improves the vibration performance of the vibrator assembly 50 .
- the upper surface of the mass block 51 that is, the damping surface 513 of the mass block 51 can be configured as a plane, which not only facilitates the die-casting of the mass block 51 and reduces the processing cost, but also facilitates the electromagnetic damping assembly 70
- the fixing of the conductors 73 of the electromagnetic damping components 70 makes the stability of the conductors 73 of the electromagnetic damping assembly 70 stronger, thereby ensuring the stability of the operation of the internal structure and improving the reliability of the product.
- a certain safety distance should be maintained between the driving magnet and the damping magnet to ensure that there is no interference between the two.
- the coupling surface 511 is recessed with a recessed table 517 , and the mounting hole 515 is opened on the bottom wall of the recessed table 517 .
- One end of the coil 31 facing the mounting hole 515 extends into the sinking table 517 and is spaced apart from the bottom wall of the sinking table 517 .
- the upper end of the coil 31 protrudes into the sinking table 517 and has a safe movement gap with the first driving magnetic steel 53 , the second driving magnetic steel 55 and the mass block 51 .
- the end of the coil 31 facing the mass block 51 is closer to the first driving magnetic steel 53 and the second driving magnetic steel 55 , which can make the effective magnetic field lines passing through the coil 31 more dense. , thereby improving the driving ability of the stator assembly 30 to the vibrator assembly 50 , so that the vibration performance of the vibrator assembly 50 is improved.
- the configuration of the safe movement gap can avoid the interference between the stator assembly 30 and the vibrator assembly 50, ensure the stability of the operation of the internal structure, and improve the reliability of the product.
- the stator assembly 30 further includes a circuit board 33 , and the circuit board 33 is sandwiched between the coils 31 and away from the mounting holes 515 between the end face of one end and the housing 10 .
- the lower end of the coil 31 is fixed on the circuit board 33, and the circuit board 33 is fixed on the bottom wall of the receiving cavity 10a. That is, the coil 31 is fixed on the casing 10 through the circuit board 33 .
- the coil 31 can be assembled and fixed with the circuit board 33 in advance, and then assembled together with the circuit board 33 into the receiving cavity 10a to realize the fixing of the stator assembly 30 and the housing 10. In this way, the assembly of the stator assembly 30 can be made simpler.
- the wiring between the coil 31 and the circuit board 33 is more convenient, which can avoid the occurrence of long wiring in the receiving cavity 10a, and avoid the assembly and operation of other internal structures. Influence, so as to ensure the stability of the operation of the internal structure and improve the reliability of the product.
- the circuit board 33 can be a flexible circuit board 33 .
- the fixing of the coil 31 and the circuit board 33 can be realized by, for example, gluing, welding, etc.;
- the mounting hole 515 penetrates through the damping surface 513 , and the vibrator assembly 50 further includes a The magnetic conductive block 57 is located on the side of the first driving magnetic steel 53 and the second driving magnetic steel 55 facing away from the coil 31 .
- the surfaces of the magnetic conductive block 57 facing away from the first driving magnetic steel 53 and the second driving magnetic steel 55 are flush with the damping surface 513 . In this way, the fixing of the conductor 73 of the electromagnetic damping assembly 70 can be facilitated, so that the stability of the conductor 73 of the electromagnetic damping assembly 70 is stronger, thereby ensuring the damping effect of the electromagnetic damping assembly 70 and improving the reliability of the product.
- the surfaces of the magnetic conductive block 57 facing the first driving magnetic steel 53 and the second driving magnetic steel 55 are fixed to the first driving magnetic steel 53 and the second driving magnetic steel 55 . In this way, the structural stability of the vibrator assembly 50 can be improved, and the vibration performance of the vibrator assembly 50 can be improved.
- the configuration of the magnetic conductive block 57 can reduce the diffusion and leakage of the magnetic field of the first driving magnetic steel 53 and the second driving magnetic steel 55, so that the effective magnetic field lines passing through the coil 31 are more dense, thereby improving the stator assembly 30.
- the driving capability of the vibrator assembly 50 improves the vibration performance of the vibrator assembly 50 .
- the fixing of the magnetic conductive block 57 and the first driving magnetic steel 53 can be realized by, for example, gluing, welding, etc.; the fixing of the magnetic conductive block 57 and the second driving magnetic steel 55 can be achieved by, for example, glue
- the fixing of the magnetic conductive block 57 and the mass block 51 can be realized by, for example, gluing, welding, etc.; the fixing of the first driving magnetic steel 53 and the mass block 51 can be realized by, for example, gluing, welding, etc.
- the fixing of the second driving magnet 55 and the mass block 51 can be realized by, for example, gluing, welding, or the like.
- the linear vibration motor 100 further includes an elastic component 90 for suspending the vibrator component 50 on the In the receiving cavity 10a, the mass block 51 also has a first connecting side and a second connecting side facing away from each other, and the first connecting side and the second connecting side are in sequence along the vibration direction of the vibrator assembly 50. are arranged and connected between the damping surface 513 and the coupling surface 511;
- the elastic assembly 90 includes two elastic pieces 91, one elastic piece 91 is supported between the first connecting side and the housing 10, and the other elastic piece 91 is supported between the second connecting side and the housing between the body 10.
- the first connecting side surface of the mass block 51 faces the left side wall of the receiving cavity 10a
- the second connecting side surface of the mass block 51 faces the right side wall of the receiving cavity 10a.
- One of the two elastic pieces 91 is supported between the first connecting side of the mass block 51 and the left side wall of the receiving cavity 10a, and the other of the two elastic pieces 91 is supported between the second connecting side of the mass block 51 and the right side of the receiving cavity 10a. between the side walls.
- the two elastic pieces 91 can buffer and support the vibration of the mass block 51 in the left and right directions, thereby improving the stability of the vibrator assembly 50 during the vibration process and improving the vibration performance of the vibrator assembly 50 .
- connection between the elastic piece 91 and the housing 10 can be realized by the stopper 93 , and the connection between the elastic piece 91 and the mass block 51 can also be realized through the stopper 93 .
- connection between the block 93 and the housing 10 can be realized by, for example, gluing, welding, etc.
- the connection between the block 93 and the mass block 51 can also be realized by, for example, gluing, welding, and the like.
- the elastic piece 91 includes a first connecting arm 911 and a second connecting arm 913 , the first connecting arm 911 and the second connecting arm 911 .
- the connecting arms 913 are connected to each other and have a bent structure.
- One end of the first connecting arm 911 away from the second connecting arm 913 is supported on the mass block 51 .
- One end of a connecting arm 911 is supported on the casing 10 , and the two elastic pieces 91 are disposed in opposite directions.
- the elastic piece 91 has a two-stage bending structure.
- the first connecting arm 911 and the second connecting arm 913 are separated from each other by the connection to form an opening 915; the openings 915 of the two elastic pieces 91 are arranged in opposite directions.
- the offset of the vibrator assembly 50 during the vibration process can be reduced, thereby further improving the stability of the vibrator assembly 50 during the vibration process and improving the vibration performance of the vibrator assembly 50 .
- the casing 10 is mainly obtained by covering the upper casing 11 and the lower casing 13 together.
- the upper shell 11 includes a top plate and four side plates surrounded by the top plate
- the lower shell 13 includes a bottom plate
- the top plate and the bottom plate are arranged oppositely
- the four side plates are sequentially surrounded by the top plate and the bottom plate.
- the receiving cavity 10a is formed.
- the cover arrangement of the upper shell 11 and the lower shell 13 can facilitate the disassembly and assembly of the casing 10 , thereby facilitating the assembly of the stator assembly 30 , the vibrator assembly 50 , the elastic assembly 90 , the electromagnetic damping assembly 70 , and the like.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
一种线性振动马达（100），其包括壳体（10）、定子组件（30）、振子组件（50）以及电磁阻尼组件（70），壳体（10）具有收容腔（10a）；定子组件（30）收容于收容腔（10a）内，并与壳体（10）固定；振子组件（50）悬置于收容腔（10a）内，并与定子组件（30）相适配，以在定子组件（30）的驱使下振动；电磁阻尼组件（70）收容于收容腔（10a）内，电磁阻尼组件（70）包括相适配的阻尼磁钢（71）和导体（73）；其中，导体（73）固定于振子组件（50），阻尼磁钢（71）固定于收容腔（10a）的腔壁，且位于导体（73）的背离振子组件（50）的一侧，以对导体（73）随振子组件（50）的振动产生阻尼。其可缩短线性振动马达（100）中振子组件（50）的制动时间，给予用户更优质的触觉体验。
Description
本发明涉及线性振动马达技术领域，特别涉及一种线性振动马达。
随着科技的不断发展，消费类电子产品更多地出现在了人们的生活之中，例如手机、平板电脑、可穿戴设备、导航仪等，这些消费类电子产品一般都会用到线性振动马达来做反馈，例如手机的来电提示、信息提示、导航提示等。相关技术中，线性振动马达在断电后，其振子组件会进入简谐振动阶段，需要经过一定时间才能停止，极大地影响了用户的触觉体验。
发明内容
本发明的主要目的是提供一种线性振动马达，旨在缩短线性振动马达中振子组件的制动时间，给予用户更优质的触觉体验。
本发明的一实施例提出一种线性振动马达，该线性振动马达包括：
壳体，具有收容腔；
定子组件，收容于所述收容腔内，并与所述壳体固定；
振子组件，悬置于所述收容腔内，并与所述定子组件相适配，以在所述定子组件的驱使下振动；以及
电磁阻尼组件，收容于所述收容腔内，所述电磁阻尼组件包括相适配的阻尼磁钢和导体；
其中，所述导体固定于所述振子组件，所述阻尼磁钢固定于所述收容腔的腔壁，且位于所述导体的背离所述振子组件的一侧，以对所述导体随所述振子组件的振动产生阻尼。
在本发明一实施例中，所述阻尼磁钢包括第一阻尼磁钢和第二阻尼磁钢，所述第一阻尼磁钢和所述第二阻尼磁钢沿所述振子组件的振动方向间隔 设置；
所述第一阻尼磁钢的充磁方向和所述第二阻尼磁钢的充磁方向均与所述振子组件的振动方向呈夹角设置，且所述第一阻尼磁钢的靠近所述导体的一端的磁性与所述第二阻尼磁钢的靠近所述导体的一端的磁性相反；
所述第一阻尼磁钢和所述第二阻尼磁钢均位于所述导体的背离所述振子组件的一侧。
在本发明一实施例中，所述第一阻尼磁钢的充磁方向和所述第二阻尼磁钢的充磁方向均与所述振子组件的振动方向垂直设置。
在本发明一实施例中，所述导体为片状结构、板状结构、块状结构或者环圈结构；
且/或，所述导体的材质为铜或软磁材料。
在本发明一实施例中，所述收容腔的固定有所述阻尼磁钢的一侧腔壁形成有增强部，所述第一阻尼磁钢和所述第二阻尼磁钢分别位于所述增强部的两侧。
在本发明一实施例中，所述增强部为由所述壳体的外表面向所述收容腔内凹设的槽体。
在本发明一实施例中，所述振子组件包括悬置于所述收容腔内的质量块，所述质量块具有背对设置耦合面和阻尼面，所述耦合面开设有安装孔，所述导体固定于所述阻尼面；
所述振子组件还包括第一驱动磁钢和第二驱动磁钢，所述第一驱动磁钢和所述第二驱动磁钢沿所述振子组件的振动方向并排设置，且均固定在所述安装孔内；
所述定子组件包括线圈，所述线圈设于所述耦合面和所述壳体之间，并与所述壳体固定，所述线圈朝向所述安装孔设置，并与所述第一驱动磁钢和所述第二驱动磁钢耦合，以通过与所述第一驱动磁钢和所述第二驱动磁钢耦 合驱使所述振子组件振动。
在本发明一实施例中，所述耦合面凹设有沉台，所述安装孔开设于所述沉台的底壁，所述线圈的朝向所述安装孔的一端伸入所述沉台内，并与所述沉台的底壁间隔设置。
在本发明一实施例中，所述安装孔贯通至所述阻尼面，所述振子组件还包括固定在所述安装孔内的导磁块，所述导磁块位于所述第一驱动磁钢和所述第二驱动磁钢的背向所述线圈的一侧。
在本发明一实施例中，所述导磁块的背向所述第一驱动磁钢和所述第二驱动磁钢的表面与所述阻尼面平齐。
在本实施例的技术方案中，当线性振动马达运行时，振子组件由于与定子组件相适配，便可在定子组件的驱使下发生振动；此时，电磁阻尼组件中的导体由于固定在振子组件上，便可随振子组件一同振动；此时，电磁阻尼组件中的阻尼磁钢由于固定在壳体上，且与电磁阻尼组件中的导体相适配，便可对电磁阻尼组件中的导体的振动产生阻尼，从而对振子组件的振动产生阻尼，进而缩短线性振动马达中振子组件的制动时间，给予用户更优质的触觉体验。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明线性振动马达一实施例的爆炸图；
图2为图1中线性振动马达的装配结构示意图；
图3为图2中线性振动马达沿水平方向剖切后的剖视图。
附图标号说明：
| 标号 | 名称 | 标号 | 名称 |
| 100 | 线性振动马达 | 53 | 第一驱动磁钢 |
| 10 | 壳体 | 55 | 第二驱动磁钢 |
| 10a | 收容腔 | 57 | 导磁块 |
| 11 | 上壳 | 70 | 电磁阻尼组件 |
| 111 | 增强部 | 71 | 阻尼磁钢 |
| 13 | 下壳 | 711 | 第一阻尼磁钢 |
| 30 | 定子组件 | 713 | 第二阻尼磁钢 |
| 31 | 线圈 | 73 | 导体 |
| 33 | 电路板 | 90 | 弹性组件 |
| 50 | 振子组件 | 91 | 弹片 |
| 51 | 质量块 | 911 | 第一连接臂 |
| 511 | 耦合面 | 913 | 第二连接臂 |
| 513 | 阻尼面 | 915 | 敞口 |
| 515 | 安装孔 | 93 | 挡块 |
| 517 | 沉台 |
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相 对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”、“若干”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
另外，本发明各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
相关技术中，线性振动马达在断电后，其振子组件会进入简谐振动阶段，需要经过一定时间才能停止，极大地影响了用户的触觉体验。
针对上述技术问题，本发明提出一种线性振动马达，旨在缩短线性振动马达中振子组件的制动时间，给予用户更优质的触觉体验。
可以理解地，本发明提出的线性振动马达可以应用于电子设备(包括消费类电子产品)，该电子设备可以是但并不限于手机、笔记本电脑、平板电脑、个人数字助理(Personal Digital Assistant，PDA)、电子书阅读器、MP3(动态影像专家压缩标准音频层面3，Moving Picture Experts Group Audio Layer III)播放器、MP4(动态影像专家压缩标准音频层面4，Moving Picture Experts Group Audio Layer IV)播放器、可穿戴设备、导航仪、掌上游戏机等。
下面将在具体实施例中对本发明提出的线性振动马达的具体结构进行说 明，并以线性振动马达水平放置为例进行介绍：
如图1至图3所示，在本发明线性振动马达100一实施例中，该线性振动马达100包括：
壳体10，具有收容腔10a；
定子组件30，收容于所述收容腔10a内，并与所述壳体10固定；
振子组件50，悬置于所述收容腔10a内，并与所述定子组件30相适配，以在所述定子组件30的驱使下振动；以及
电磁阻尼组件70，收容于所述收容腔10a内，所述电磁阻尼组件70包括相适配的阻尼磁钢71和导体73；
其中，所述导体73固定于所述振子组件50，所述阻尼磁钢71固定于所述收容腔10a的腔壁，且位于所述导体73的背离所述振子组件50的一侧，以对所述导体73随所述振子组件50的振动产生阻尼。
本实施例中，壳体10大致呈长方体形，从而使其内部的收容腔10a具有顶壁、底壁、左侧壁、右侧壁、后侧壁及前侧壁。振子组件50的左端通过弹性组件90弹性连接于收容腔10a的左侧壁，振子组件50的右端通过弹性组件90弹性连接于收容腔10a的右侧壁。此时，定子组件30固定在收容腔10a的底壁上，且朝向振子组件50设置，以与振子组件50适配、耦合，从而使振子组件50能够在定子组件30的驱使下在左右方向上发生振动。进一步地，电磁阻尼组件70的阻尼磁钢71固定在收容腔10a的顶壁上，振子组件50的一表面(即后文中的阻尼面513)面向收容腔10a的顶壁设置，电磁阻尼组件70的导体73固定在振子组件50的面向收容腔10a顶壁设置的表面(即后文中的阻尼面513)上，且朝向阻尼磁钢71设置，以与阻尼磁钢71适配、耦合，从而使导体73在随振子组件50一同振动时能够受到阻尼磁钢71的阻尼。
也就是说，在本实施例的技术方案中，当线性振动马达100运行时，振子组件50由于与定子组件30相适配，便可在定子组件30的驱使下发生振动；此时，电磁阻尼组件70中的导体73由于固定在振子组件50上，便可随振子组件50一同振动；此时，电磁阻尼组件70中的阻尼磁钢71由于固定在壳体10上，且与电磁阻尼组件70中的导体73相适配，便可对电磁阻尼组件70中的导体73的振动产生阻尼，从而对振子组件50的振动产生阻 尼，进而缩短线性振动马达100中振子组件50的制动时间，给予用户更优质的触觉体验。
此外，电磁阻尼组件70的导体73固定在振子组件50上的设计，还可减少振子组件50中质量块51的配重，降低质量块51的材料投入，避免材料浪费，节省制造成本。对于电磁阻尼组件70的导体73，其可通过例如胶接、焊接等方式固定于振子组件50。
在一实施例中，阻尼磁钢71可以配置有两块，左侧一块定义为第一磁钢，右侧一块定义为第二磁钢，二者在左右方向上以一定的安全距离间隔分布，以保障二者之间互不影响；并且，第一磁钢的充磁方向可以水平向左，也可以水平向右；第二磁钢的充磁方向可以水平向左，也可以水平向右。相适配地，导体73可以配置有两块，左侧一块定义为第一导体，右侧一块定义为第二导体，二者在左右方向上以一定的安全距离间隔分布；并且，第一导体和第二导体均设置在第一磁钢和第二磁钢之间。这样，当第一导体随振子组件50向左移动并接近第一磁钢时，由于楞次定律，便会受到斥力作用，形成阻尼；而当第二导体随振子组件50向右移动并接近第二磁钢时，由于楞次定律，也会受到斥力作用，形成阻尼。
除此以外，图1至图3所示的实施例，还提供了另一种对于电磁阻尼组件70的配置方式，具体如下：
所述阻尼磁钢71包括第一阻尼磁钢711和第二阻尼磁钢713，所述第一阻尼磁钢711和所述第二阻尼磁钢713沿所述振子组件50的振动方向间隔设置；
所述第一阻尼磁钢711的充磁方向和所述第二阻尼磁钢713的充磁方向均与所述振子组件50的振动方向呈夹角设置，且所述第一阻尼磁钢711的靠近所述导体73的一端的磁性与所述第二阻尼磁钢713的靠近所述导体73的一端的磁性相反；
所述第一阻尼磁钢711和所述第二阻尼磁钢713均位于所述导体73的背离所述振子组件50的一侧。
本实施例中，第一阻尼磁钢711和第二阻尼磁钢713分别位于收容腔10a的左侧和收容腔10a的右侧，且二者在左右方向上以一定的安全距离间隔分布，以保障两块阻尼磁钢之间互不影响，提升电磁阻尼组件70的稳定 性和可靠性。并且，第一阻尼磁钢711和第二阻尼磁钢713均位于导体73的上方；即，第一阻尼磁钢711的下表面高于导体73的上表面设置，第二阻尼磁钢713的下表面高于导体73的上表面设置。
此时，第一阻尼磁钢711的充磁方向和第二阻尼磁钢713的充磁方向可以存在以下几种具体形式：
(1)第一阻尼磁钢711的充磁方向向左上方倾斜设置，第二阻尼磁钢713的充磁方向向左下方倾斜设置；
(2)第一阻尼磁钢711的充磁方向向左上方倾斜设置，第二阻尼磁钢713的充磁方向向右下方倾斜设置；
(3)第一阻尼磁钢711的充磁方向向右上方倾斜设置，第二阻尼磁钢713的充磁方向向左下方倾斜设置；
(4)第一阻尼磁钢711的充磁方向向右上方倾斜设置，第二阻尼磁钢713的充磁方向向右下方倾斜设置；
(5)第一阻尼磁钢711的充磁方向向左下方倾斜设置，第二阻尼磁钢713的充磁方向向左上方倾斜设置；
(6)第一阻尼磁钢711的充磁方向向左下方倾斜设置，第二阻尼磁钢713的充磁方向向右上方倾斜设置；
(7)第一阻尼磁钢711的充磁方向向右下方倾斜设置，第二阻尼磁钢713的充磁方向向左上方倾斜设置；
(8)第一阻尼磁钢711的充磁方向向右下方倾斜设置，第二阻尼磁钢713的充磁方向向右上方倾斜设置；
此时，对于导体73而言，在其与第一阻尼磁钢711耦合、适配的同时，其还与第二阻尼磁钢713耦合、适配。这样，在导体73随振子组件50向左(或者)移动的过程中，根据楞次定律，导体73可同时获得第一阻尼磁钢711的阻尼作用和第二阻尼磁钢713的阻尼作用，即一导体73可同时与两阻尼磁钢发生阻尼，从而使振子组件50所获得的阻尼效果更好。
并且，由于第一阻尼磁钢711和第二阻尼磁钢713均位于导体73的背离振子组件50的一侧，导体73随振子组件50，不论是向左移动，还是向右移动，均不会与阻尼磁钢发生碰撞，不仅提升了电磁阻尼组件70运行时的安全性和可靠性，而且还有利于获得更长的阻尼距离；这样，一方面有利于 提升振子组件50的振动性能，另一方面有利于获得更好的阻尼效果，从而给予用户更优质的触觉体验。
实际应用时，导体73可以为片状结构、板状结构、块状结构或者环圈结构。当然，对于电磁阻尼组件70，还有其他更多有效且合理的配置方式，本领域技术人员可以根据实际应用条件进行实施，在此不再一一赘述。
进一步地，所述导体73的材质为铜或软磁材料。这样，不仅对于不同环境温度适应性较强，响应稳定性较好；而且在线性振动马达100未运行时，由于其自身不带磁性，不会破坏线性振动马达100内部的磁平衡。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述第一阻尼磁钢711的充磁方向(如图2中的虚线箭头所示)和所述第二阻尼磁钢713的充磁方向(如图2中的虚线箭头所示)均与所述振子组件50的振动方向垂直设置。可以理解地，这样的配置方式，可使导体73所获得的综合阻尼效果是在水平方向上的，从而降低导体73在竖直方向上发生偏移的几率，降低振子组件50在竖直方向上发生偏移的几率，进而提升振子组件50的振动性能，给予用户更优质的触觉体验。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述收容腔10a的固定有所述阻尼磁钢71的一侧腔壁形成有增强部111，所述第一阻尼磁钢711和所述第二阻尼磁钢713分别位于所述增强部111的两侧。
本实施例中，增强部111为由壳体10的外表面向收容腔10a内凹设的槽体，即收容腔10a的顶壁的外侧表面向收容腔10a内凹进形成有槽体；此时，第一阻尼磁钢711位于槽体的左侧，第二阻尼磁钢713位于槽体的右侧。
可以理解地，本实施例的设置，可以增加壳体10的强度，增加壳体10的抗形变能力，从而可以增加在跌落等破坏性过程中阻尼磁钢的稳定性，保证内部结构运行的稳定性，提高产品的可靠性。并且，增强部111为内凹的槽体，还可以保障壳体10外表面的平整性，降低线性振动马达100的装配难度。
当然，在其他实施例中，增强部111还可以为其他结构形式，例如：增 强部111为外凸的槽体。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述振子组件50包括悬置于所述收容腔10a内的质量块51，所述质量块51具有背对设置耦合面511和阻尼面513，所述耦合面511开设有安装孔515，所述导体73固定于所述阻尼面513；
所述振子组件50还包括第一驱动磁钢53和第二驱动磁钢55，所述第一驱动磁钢53和所述第二驱动磁钢55沿所述振子组件50的振动方向并排设置，且均固定在所述安装孔515内；
所述定子组件30包括线圈31，所述线圈31设于所述耦合面511和所述壳体10之间，并与所述壳体10固定，所述线圈31朝向所述安装孔515设置，并与所述第一驱动磁钢53和所述第二驱动磁钢55耦合，以通过与所述第一驱动磁钢53和所述第二驱动磁钢55耦合驱使所述振子组件50振动。
本实施例中，质量块51的耦合面511面向收容腔10a的底壁设置，质量块51的阻尼面513面向收容腔10a的顶壁设置。线圈31固定在收容腔10a的底壁上，且按照其轴线与收容腔10a的底壁垂直的方式进行设置；即，线圈31的下端固定在收容腔10a的底壁上，固定的上端朝向质量块51的耦合面511设置。
进一步地，质量块51的耦合面511上与线圈31相对的位置处开设有安装孔515，第一驱动磁钢53和第二驱动磁钢55均固定在安装孔515内，并沿左右方向并排设置。并且，第一驱动磁钢53的充磁方向竖直向下(如图2中的虚线箭头所示)，第二驱动磁钢55的充磁方向竖直向上(如图2中的虚线箭头所示)。
这样，当线圈31通电时，便可向第一驱动磁钢53施加水平向左(或向右)的作用力，同时向第二驱动磁钢55施加水平向左(或向右)的作用力，从而驱使第一驱动磁钢53、第二驱动磁钢55以及质量块51在左右方向上发生振动。过程中，由于配置有质量块51，还可以使振子组件50的整体质量得以增加，从而使振子组件50的振动性能得以提升。
当然，在其他实施例中，第一驱动磁钢53的充磁方向和第二驱动磁钢55的充磁方向，也可以做其他形式的配置，例如：第一驱动磁钢53的充磁 方向竖直向上，第二驱动磁钢55的充磁方向竖直向下。
可以理解地，当第一驱动磁钢53和第二驱动磁钢55采用上下反向充磁方式时，还可以使穿过线圈31的有效磁感线更加密集，从而提升定子组件30对振子组件50的驱动能力，使振子组件50的振动性能得以提升。
此外，还需要说明的是，质量块51的上表面，即质量块51的阻尼面513可以配置成平面，不仅便于质量块51的压铸成型，有利于降低加工成本，而且还便于电磁阻尼组件70的导体73的固定，使电磁阻尼组件70的导体73的稳定性更强，从而保证内部结构运行的稳定性，提高产品的可靠性。并且，驱动磁钢和阻尼磁钢之间还应保持一定的安全间距，以保证二者之间无干涉产生。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述耦合面511凹设有沉台517，所述安装孔515开设于所述沉台517的底壁，所述线圈31的朝向所述安装孔515的一端伸入所述沉台517内，并与所述沉台517的底壁间隔设置。
本实施例中，线圈31的上端伸入至沉台517内，且与第一驱动磁钢53、第二驱动磁钢55以及质量块51均留有安全运动间隙。
可以理解地，在本实施例的设置下，线圈31的朝向质量块51的一端更加靠近第一驱动磁钢53和第二驱动磁钢55，可以使穿过线圈31的有效磁感线更加密集，从而提升定子组件30对振子组件50的驱动能力，使振子组件50的振动性能得以提升。而安全运动间隙的配置，则可避免定子组件30与振子组件50发生干涉，保证内部结构运行的稳定性，提高产品的可靠性。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述定子组件30还包括电路板33，所述电路板33夹设在所述线圈31背离所述安装孔515的一端的端面和所述壳体10之间。
本实施例中，线圈31的下端固定在电路板33上，电路板33固定在收容腔10a的底壁上。也就是说，线圈31是通过电路板33固定在壳体10上的。
这样，线圈31便可以预先与电路板33进行配装固定，之后连同电路板 33一起装配至收容腔10a内，实现定子组件30与壳体10的固定。如此，便可以使定子组件30的装配更加简单。并且，由于线圈31是固定在电路板33上的，线圈31与电路板33之间的走线更加方便，可以避免收容腔10a内较长走线的出现，避免对其他内部结构的装配和运行造成影响，从而保证内部结构运行的稳定性，提高产品的可靠性。
实际应用时，电路板33可以采用柔性电路板33。线圈31与电路板33的固定，可通过例如胶接、焊接等方式实现；电路板33与壳体10的固定，可通过例如胶接、焊接等方式实现。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述安装孔515贯通至所述阻尼面513，所述振子组件50还包括固定在所述安装孔515内的导磁块57，所述导磁块57位于所述第一驱动磁钢53和所述第二驱动磁钢55的背向所述线圈31的一侧。
本实施例中，导磁块57的背向第一驱动磁钢53和第二驱动磁钢55的表面与阻尼面513平齐。这样，可以便于电磁阻尼组件70的导体73的固定，使电磁阻尼组件70的导体73的稳定性更强，从而保证电磁阻尼组件70的阻尼效果，提高产品的可靠性。
并且，导磁块57的面向第一驱动磁钢53和第二驱动磁钢55的表面与第一驱动磁钢53和第二驱动磁钢55均固定。这样，可以提升振子组件50的结构稳定性，提升振子组件50的振动性能。
可以理解地，导磁块57的配置，可以减少第一驱动磁钢53和第二驱动磁钢55磁场的扩散外漏，使穿过线圈31的有效磁感线更加密集，从而提升定子组件30对振子组件50的驱动能力，使振子组件50的振动性能得以提升。
此外，需要说明的时，导磁块57与第一驱动磁钢53的固定，可通过例如胶接、焊接等方式实现；导磁块57与第二驱动磁钢55的固定，可通过例如胶接、焊接等方式实现；导磁块57与质量块51的固定，可通过例如胶接、焊接等方式实现；第一驱动磁钢53与质量块51的固定，可通过例如胶接、焊接等方式实现；第二驱动磁钢55与质量块51的固定，可通过例如胶接、焊接等方式实现。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述线性振动马达100还包括弹性组件90，所述弹性组件90用于将所述振子组件50悬置于所述收容腔10a内，所述质量块51还具有背对设置的第一连接侧面和第二连接侧面，所述第一连接侧面和所述第二连接侧面沿所述振子组件50的振动方向依次设置，且均连接在所述阻尼面513和所述耦合面511之间；
所述弹性组件90包括两弹片91，一所述弹片91支撑在所述第一连接侧面和所述壳体10之间，另一所述弹片91支撑在所述第二连接侧面和所述壳体10之间。
本实施例中，质量块51的第一连接侧面面向收容腔10a的左侧壁设置，质量块51的第二连接侧面面向收容腔10a的右侧壁设置。两弹片91中的一个支撑在质量块51的第一连接侧面和收容腔10a的左侧壁之间，两弹片91中的另一个支撑在质量块51的第二连接侧面和收容腔10a的右侧壁之间。
可以理解地，两弹片91可以对质量块51在左右方向上的振动进行缓冲和支撑，从而提升振子组件50振动过程中的稳定性，提升振子组件50的振动性能。
实际应用时，弹片91与壳体10的连接可通过挡块93实现，弹片91与质量块51的连接也可通过挡块93实现。具体地，挡块93与壳体10的连接，可通过例如胶接、焊接等方式实现，挡块93与质量块51的连接，也可通过例如胶接、焊接等方式实现。
如图1至图3所示，在本发明线性振动马达100一实施例中，所述弹片91包括第一连接臂911和第二连接臂913，所述第一连接臂911和所述第二连接臂913相互连接且呈弯折结构，所述第一连接臂911的远离所述第二连接臂913的一端支撑在所述质量块51上，所述第二连接臂913的远离所述第一连接臂911的一端支撑在所述壳体10上，两所述弹片91朝向相反的方向设置。
本实施例中，弹片91呈两段式弯折结构。第一连接臂911和第二连接臂913由连接处相互远离，以形成敞口915；两弹片91的敞口915朝向相反 的方向设置。
这样，可以减小振子组件50振动过程中的偏移量，从而进一步提升振子组件50振动过程中的稳定性，提升振子组件50的振动性能。
此外，需要说明的是，壳体10主要由上壳11和下壳13盖合得到。本实施例中，上壳11包括顶板和围设在顶板四周的四个侧板，下壳13包括底板，顶板和底板相对设置，四个侧板依次围设在顶板的四周和底板的四周，从而围合形成收容腔10a。可以理解地，采用上壳11和下壳13盖合的设置形式，可便于壳体10的拆装，从而便于定子组件30、振子组件50、弹性组件90、电磁阻尼组件70等的装配。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。
Claims (10)
- 一种线性振动马达，其特征在于，包括：壳体，具有收容腔；定子组件，收容于所述收容腔内，并与所述壳体固定；振子组件，悬置于所述收容腔内，并与所述定子组件相适配，以在所述定子组件的驱使下振动；以及电磁阻尼组件，收容于所述收容腔内，所述电磁阻尼组件包括相适配的阻尼磁钢和导体；其中，所述导体固定于所述振子组件，所述阻尼磁钢固定于所述收容腔的腔壁，且位于所述导体的背离所述振子组件的一侧，以对所述导体随所述振子组件的振动产生阻尼。
- 如权利要求1所述的线性振动马达，其特征在于，所述阻尼磁钢包括第一阻尼磁钢和第二阻尼磁钢，所述第一阻尼磁钢和所述第二阻尼磁钢沿所述振子组件的振动方向间隔设置；所述第一阻尼磁钢的充磁方向和所述第二阻尼磁钢的充磁方向均与所述振子组件的振动方向呈夹角设置，且所述第一阻尼磁钢的靠近所述导体的一端的磁性与所述第二阻尼磁钢的靠近所述导体的一端的磁性相反；所述第一阻尼磁钢和所述第二阻尼磁钢均位于所述导体的背离所述振子组件的一侧。
- 如权利要求2所述的线性振动马达，其特征在于，所述第一阻尼磁钢的充磁方向和所述第二阻尼磁钢的充磁方向均与所述振子组件的振动方向垂直设置。
- 如权利要求2所述的线性振动马达，其特征在于，所述导体为片状结构、板状结构、块状结构或者环圈结构；且/或，所述导体的材质为铜或软磁材料。
- 如权利要求2所述的线性振动马达，其特征在于，所述收容腔的固定有所述阻尼磁钢的一侧腔壁形成有增强部，所述第一阻尼磁钢和所述第二阻尼磁钢分别位于所述增强部的两侧。
- 如权利要求5所述的线性振动马达，其特征在于，所述增强部为由所述壳体的外表面向所述收容腔内凹设的槽体。
- 如权利要求1至6中任一项所述的线性振动马达，其特征在于，所述振子组件包括悬置于所述收容腔内的质量块，所述质量块具有背对设置耦合面和阻尼面，所述耦合面开设有安装孔，所述导体固定于所述阻尼面；所述振子组件还包括第一驱动磁钢和第二驱动磁钢，所述第一驱动磁钢和所述第二驱动磁钢沿所述振子组件的振动方向并排设置，且均固定在所述安装孔内；所述定子组件包括线圈，所述线圈设于所述耦合面和所述壳体之间，并与所述壳体固定，所述线圈朝向所述安装孔设置，并与所述第一驱动磁钢和所述第二驱动磁钢耦合，以通过与所述第一驱动磁钢和所述第二驱动磁钢耦合驱使所述振子组件振动。
- 如权利要求7所述的线性振动马达，其特征在于，所述耦合面凹设有沉台，所述安装孔开设于所述沉台的底壁，所述线圈的朝向所述安装孔的一端伸入所述沉台内，并与所述沉台的底壁间隔设置。
- 如权利要求7所述的线性振动马达，其特征在于，所述安装孔贯通至所述阻尼面，所述振子组件还包括固定在所述安装孔内的导磁块，所述导磁块位于所述第一驱动磁钢和所述第二驱动磁钢的背向所述线圈的一侧。
- 如权利要求9所述的线性振动马达，其特征在于，所述导磁块的背向所述第一驱动磁钢和所述第二驱动磁钢的表面与所述阻尼面平齐。
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| CN1575028A (zh) * | 2003-05-23 | 2005-02-02 | 阿尔卑斯电气株式会社 | 激振装置 |
| JP2010094567A (ja) * | 2008-10-14 | 2010-04-30 | Citizen Electronics Co Ltd | 振動発生装置。 |
| CN207968280U (zh) * | 2018-02-11 | 2018-10-12 | 瑞声科技(新加坡)有限公司 | 线性振动电机 |
| CN211701806U (zh) * | 2019-12-30 | 2020-10-16 | 歌尔科技有限公司 | 一种振动装置 |
| CN111884470A (zh) * | 2020-08-30 | 2020-11-03 | 深圳市科力尔电机有限公司 | 一种电磁阻尼线性马达 |
| CN112865468A (zh) * | 2021-03-31 | 2021-05-28 | 歌尔股份有限公司 | 线性振动马达 |
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| CN107453575A (zh) * | 2017-08-30 | 2017-12-08 | 瑞声光电科技(常州)有限公司 | 线性振动电机 |
| CN212811536U (zh) * | 2020-05-27 | 2021-03-26 | 瑞声科技(新加坡)有限公司 | 线性振动电机 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1575028A (zh) * | 2003-05-23 | 2005-02-02 | 阿尔卑斯电气株式会社 | 激振装置 |
| JP2010094567A (ja) * | 2008-10-14 | 2010-04-30 | Citizen Electronics Co Ltd | 振動発生装置。 |
| CN207968280U (zh) * | 2018-02-11 | 2018-10-12 | 瑞声科技(新加坡)有限公司 | 线性振动电机 |
| CN211701806U (zh) * | 2019-12-30 | 2020-10-16 | 歌尔科技有限公司 | 一种振动装置 |
| CN111884470A (zh) * | 2020-08-30 | 2020-11-03 | 深圳市科力尔电机有限公司 | 一种电磁阻尼线性马达 |
| CN112865468A (zh) * | 2021-03-31 | 2021-05-28 | 歌尔股份有限公司 | 线性振动马达 |
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