CN115622354B - Linear motor and electronic equipment - Google Patents
Linear motor and electronic equipment Download PDFInfo
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- CN115622354B CN115622354B CN202210975328.XA CN202210975328A CN115622354B CN 115622354 B CN115622354 B CN 115622354B CN 202210975328 A CN202210975328 A CN 202210975328A CN 115622354 B CN115622354 B CN 115622354B
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- 239000000463 material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 25
- 238000012827 research and development Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000008093 supporting effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007246 mechanism 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
- 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
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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
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
Abstract
The application relates to a linear motor and electronic equipment, which comprises a shell, a mass block, an elastic piece and a driving part, wherein the mass block is arranged in the shell, the mass block is connected with the shell through the elastic piece and is suspended in the shell, the driving part is arranged in the shell and is used for driving the mass block to reciprocate in the shell along any direction, so that the linear motor can meet vibration feedback in a three-dimensional space, a plurality of vibration modes can be formulated by research and development personnel on the basis, and the situation of vibration sense splitting cannot occur due to only one mass block, so that the vibration effect of the linear motor is better, the vibration sense is stronger, and when the linear motor is applied to the electronic equipment, the requirements of vibration sense and touch sense of a user in different use occasions and application scenes can be met, and the experience effect of the user is improved.
Description
Technical Field
The present application relates to the field of motors, and in particular, to a linear motor and an electronic device.
Background
The linear motor is mainly applied to electronic equipment such as mobile phones, tablet computers, wearable equipment, game handles and the like, and is used for achieving vibration functions of the electronic equipment, such as incoming call vibration reminding of the mobile phones, vibration feedback of the game equipment and the like. The motor used in the prior electronic equipment can only provide vibration in a single direction or in two directions, and has fewer vibration modes, so that the vibration requirements of users on different use occasions and application scenes in the daily use process of the electronic equipment cannot be met, and the experience effect of the users is reduced.
Disclosure of Invention
The application aims to provide a linear motor and electronic equipment, which are used for solving the problems that the linear motor in the prior art has few vibration modes and cannot meet various vibration requirements of users.
The first aspect of the application provides a linear motor, comprising a shell, a mass block, an elastic piece and a driving part, wherein the mass block is arranged in the shell, the mass block is connected with the shell through the elastic piece and is suspended in the shell, and the driving part is arranged in the shell and is used for driving the mass block to reciprocate in any direction in the shell. The linear motor is provided with a unique mass block and is fixed and suspended in the shell through the elastic piece, the mass block is not interfered with the shell, the driving part can directly drive the mass block to reciprocate in the shell along any direction and under the support of the elastic piece, meanwhile, the driving part and the elastic piece can react on the shell, so that the linear motor can reciprocate in the direction, vibration feedback in a three-dimensional space can be met, a researcher can formulate multiple vibration modes on the basis, and due to the fact that only one mass block is arranged, vibration effect of the linear motor is better, vibration sense is stronger, the requirements of vibration sense and touch sense of a user in different use occasions and application scenes can be met when the linear motor is applied to electronic equipment, and experience effect of the user is improved.
In one possible design, the driving part can drive the mass block to reciprocate along a first direction and a second direction, wherein the first direction and the second direction are perpendicular to each other. The linear motor can realize the vibration along the first direction and the second direction, can provide the vibration along the first direction and the second direction for the electronic equipment, can save the use quantity of the linear motor in the electronic equipment, can also provide the vibration along the resultant force direction for the electronic equipment along the vibration along the resultant force direction, further increases the vibration mode of the electronic equipment, meets the various vibration feedback requirements of users, has simple structure, strong vibration sense and good stability, can save cost, and is beneficial to the miniaturization design of the electronic equipment.
In one possible design, the driving part is further capable of driving the mass to reciprocate in a third direction, and the third direction is perpendicular to the first direction and the second direction. The linear motor can vibrate along the third direction Z, can provide vibration along the third direction for the electronic equipment, and the linear motor can vibrate along the force combining direction in the three-dimensional space, so as to provide vibration in the three-dimensional space for the electronic equipment, further increase the vibration mode of the electronic equipment, meet the higher three-dimensional vibration feedback requirement of a user, and bring better vibration experience for the user.
In one possible design, the drive section includes a coil fixed to the housing and a magnet fixed to the mass, the coil being disposed in correspondence with the magnet. When the coil is electrified, the coil can generate a magnetic field, so that the electrified coil interacts with a corresponding magnet to generate a driving force, and the driving mass block moves in any direction in the shell.
In one possible design, the coil includes two first coils, two second coils, and two third coils, the magnet further includes two first magnets, two second magnets, and two third magnets, the two first magnets are fixed to both sides of the mass block along the first direction, the two second magnets are fixed to both sides of the mass block along the second direction, the third magnets are fixed to both sides of the mass block along the third direction, the two first coils are fixed to both sides of the housing along the first direction, the two second coils are fixed to both sides of the housing along the second direction, the third coils are fixed to both sides of the housing along the third direction, the first coils are arranged corresponding to the first magnets, the second coils are arranged corresponding to the second magnets, and the third coils are arranged corresponding to the third magnets. In this structure, first coil and first magnet along first direction, second coil and second magnet along the second direction, third coil and third magnet along the third direction all can drive alone, make linear motor produce along the independent vibration of first direction, second direction or third direction, mutually noninterfere, guarantee the stability of vibration, also can drive simultaneously, make linear motor produce the vibration in its resultant force direction, make linear motor can be according to the steady vibration of vibration mode of making, vibration sensitivity is high, and the driving force all acts on unique quality piece, difficult production vibration rupture, vibration stability is good, the sense of vibration is strong, further user's vibration experience has been improved.
In one possible design, the first magnet, the second magnet and the third magnet are arranged at intervals, so that the mass block can be prevented from being disturbed by other magnetic fields to generate torsion when vibrating along a certain direction, the vibration stability of the mass block is improved, and the vibration effect of the linear motor is ensured.
In one possible design, the mass block is provided with a groove, the magnet is embedded in the groove, so that the connection strength of the magnet and the mass block can be improved, the magnet is not easy to displace under the action of a magnetic field generated by the coil, the magnet is prevented from being separated from the linear motor in the vibration process to cause the failure or damage of the linear motor, the structural stability and the service life of the linear motor are improved, the structure is simple, and the production and manufacturing cost is low.
In one possible design, the linear motor further comprises a pole core, the pole core is disposed on the inner side of the housing, and the coil is sleeved on the pole core. When the coil is electrified, the pole core can be magnetized by the magnetic field generated by the coil to generate a magnetic field, so that the magnetic field of the pole core and the magnetic field of the coil are mutually overlapped, the magnetism of the coil is enhanced, the driving force is also enhanced, and the pole core is easier to interact with the magnet, thereby saving electric energy and further reducing the cost.
In one possible design, the linear motor further includes a flexible circuit board electrically connected to the coil. The flexible circuit board can provide alternating voltage for the coil, so that the coil can generate a magnetic field to interact with the magnet to generate driving force, the current direction of alternating current is periodically changed in the coil, the direction of the magnetic field generated by the coil is also periodically changed, and the magnetic pole of the coil facing one side of the mass block is periodically changed, so that the direction of the driving force is periodically changed along with the periodic change, and the mass block can be driven to reciprocate along the driving force direction under the support of the elastic piece, and the vibration of the linear motor in the driving force direction is realized. Therefore, the vibration frequency of the linear motor can be controlled by controlling the change frequency of the alternating current in the coil, so that different vibration touch feeling is generated, and the experience effect of a user is improved. In addition, the magnitude of the magnetic field generated by the coil can be changed by changing the magnitude of the current in the coil, so that the magnetic magnitude of the magnetic pole of the coil facing to one side of the mass block is changed, the driving magnitude is changed accordingly, the vibration intensity of the mass block is improved, the vibration sense of the linear motor is improved, and better prompting effect and vibration feedback are achieved.
In one possible design, the mass is of non-magnetically permeable material. When the mass block is made of non-magnetic permeability materials, the first magnet, the second magnet and the third magnet which are embedded on the mass block can be prevented from interfering with each other, the mass block is prevented from being twisted due to the magnetic field interference generated by the coil, and the vibration stability of the mass block is further improved.
In one possible design, the mass and the housing are square or rectangular, the mass has eight first corners, the housing has eight second corners, the linear motor has eight elastic members, one ends of the eight elastic members are connected to the first corners, and the other ends of the eight elastic members are connected to the second corners, so that the mass is suspended in the housing. The elastic piece can provide the support for the quality piece, make the quality piece suspend in the casing, make the quality piece have the distance condition that can vibrate, can avoid the quality piece to contact with parts such as casing or coil in the vibration process, reduce the vibration and cause, improve vibration stability, and the first angle of quality piece is connected through the second angle of elastic piece with the casing and is suspended in the casing, when guaranteeing the supporting role of elastic piece, can avoid the interference of elastic piece with parts such as quality piece, coil, magnet in furthest, in addition, in this structure, every elastic piece can provide even holding power for the vibration of quality piece in all directions, guarantee the vibration stationarity of quality piece, so that linear motor can steadily vibrate, improve linear motor's vibration effect.
In one possible design, the elastic element is a spring or a leaf spring. When the elastic piece is a spring or an elastic sheet, the elastic piece can generate elastic deformation along any direction, so that when the mass block vibrates along any direction, the elastic piece can provide uniform supporting force for the mass block, the vibration stability of the mass block is ensured, the linear motor can have better vibration effect, the spring and the elastic sheet are simple in structure and convenient to process and manufacture, and the manufacturing cost of the elastic piece can be reduced.
A second aspect of the present application provides an electronic device comprising a housing and a linear motor according to any of the embodiments above, the linear motor being mounted within the housing. Since the linear motor has the above technical effects, the electronic device including the linear motor should also have the above technical effects, and will not be described herein.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
Fig. 1 is a schematic structural view of a linear motor according to an embodiment of the present application;
FIG. 2 is a schematic view of a portion of the linear motor of FIG. 1;
FIG. 3 is a schematic view of a portion of the mechanism of the linear motor of FIG. 1;
FIG. 4 is a schematic view of another linear motor according to an embodiment of the present application;
fig. 5 is a cross-sectional view of fig. 4.
Reference numerals:
1-a housing;
11-a second angle;
2-mass block;
21-grooves;
22-first corner;
3-an elastic member;
4-a driving part;
41-coil;
411-a first coil;
412-a second coil;
413-a third coil;
42-magnet;
421-a first magnet;
422-a second magnet;
423-a third magnet;
5-pole cores;
x-a first direction;
y-a second direction;
z-third direction.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Detailed Description
First, description will be made of the related art: in the process of using the mobile phone, a daily user has different vibration requirements according to different use occasions and application scenes. Most motors used in the existing electronic equipment can only provide one-direction movement, the mode is single, the generated vibration sense is not strong, and other related technologies of motors with two-direction linear vibration exist, so that the linear motors in the electronic equipment can vibrate along two directions, but cannot vibrate in three dimensions, and the vibration requirements of users in different use occasions and application scenes, such as incoming call vibration, alarm reminding, game feedback and the like, cannot be met, and the experience effect of the users is reduced.
In order to solve the technical problems, the embodiment of the application provides a linear motor which can be installed in electronic equipment to realize the vibration function of the electronic equipment. The electronic device may be a cell phone, tablet computer, ultra-mobile personal computer, UMPC, netbook, as well as any electronic device that may have vibration capabilities, such as a cell phone, personal digital assistant (personal digital assistant, PDA), augmented reality (augmented reality, AR) device, virtual Reality (VR) device, artificial intelligence (artificial intelligence, AI) device, wearable device, vehicle-mounted device, smart home device and/or smart city device, gamepad, etc. The embodiment of the application does not limit the specific form of the electronic device, and the electronic device is taken as a mobile phone for example for convenience of explanation.
For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.
The embodiment of the application provides a linear motor, as shown in fig. 1, which comprises a shell 1, a mass block 2, an elastic piece 3 and a driving part 4, wherein the mass block 2 is arranged in the shell 1, the mass block 2 is connected with the shell 1 through the elastic piece 3, the mass block 2 is suspended in the shell 1, and the driving part 4 is arranged in the shell 1 and is used for driving the mass block 2 to reciprocate in any direction in the shell 1.
In this embodiment, as shown in fig. 1, the linear motor has a unique mass 2, and is fixed and suspended in the housing 1 through the elastic member 3, so that the mass 2 does not interfere with the housing 1, the driving portion 4 can directly drive the mass 2 to reciprocate in any direction in the housing 1 and under the support of the elastic member 3, meanwhile, the driving portion 4 and the elastic member 3 can react to the housing 1, so that the linear motor can reciprocate in the direction, thereby the linear motor can meet the vibration feedback in the three-dimensional space, so that the research personnel can make multiple vibration modes on this basis, and due to the fact that only one mass 2 is provided, the situation of vibration sense rupture does not occur, the vibration effect of the linear motor is better, the vibration sense is stronger, when the linear motor is applied to electronic equipment, the requirements of vibration sense and touch sense of users in different use cases and application scenes can be met, and the experience effect of the users is improved.
For example, when some flat-plate type electronic devices are placed on a desktop or other scenes, vibration perpendicular to the desktop can enable the vibration effect of the electronic devices to be more obvious, so that a better prompting effect is achieved.
Specifically, as shown in fig. 1, the driving portion 4 can drive the mass 2 to reciprocate in the first direction X and the second direction Y, which are perpendicular to each other.
In this embodiment, when the linear motor is required to provide a vibration sense along the first direction X, the driving portion 4 can generate a driving force along the first direction X to drive the mass 2 to reciprocate along the first direction X, the elastic member 3 on one side of the mass 2 along the first direction X is compressed between the mass 2 and the housing 1, the elastic member 3 on the other side extends between the mass 2 and the housing 1 and alternates back and forth at a certain frequency, the elastic member 3 can react with the mass 2 along the first direction X to ensure that the mass 2 cannot interfere with the housing 1, such as impact, and the like, to ensure the vibration stability of the linear motor, and reduce the vibration noise of the linear motor, and meanwhile, the driving portion 4 and the elastic member 3 can also react with the housing 1 to enable the linear motor to integrally move along the first direction X and the mass 2, so that the linear motor can realize vibration along the first direction X.
When the linear motor is required to provide vibration sense along the second direction Y, the driving part 4 can generate driving force along the second direction Y to drive the mass block 2 to reciprocate along the second direction Y, the elastic piece 3 on one side of the mass block 2 along the second direction Y is compressed between the mass block 2 and the shell 1, the elastic piece 3 on the other side extends between the mass block 2 and the shell 1 and alternates back and forth at a certain frequency, the elastic piece 3 can react with the mass block 2 along the second direction Y so as to ensure that the mass block 2 cannot generate interference phenomena such as collision with the shell 1, the vibration stability of the linear motor is ensured, the vibration noise of the linear motor is reduced, and meanwhile, the driving part 4 and the elastic piece 3 can also react with the shell 1, so that the whole linear motor can reversely move along the second direction Y and the mass block 2, and the linear motor can vibrate along the second direction Y.
Wherein, when the driving part 4 simultaneously generates the driving forces in the first direction X and the second direction Y, the mass 2 can reciprocate in the direction of resultant force thereof, so that the linear motor as a whole can move in the plane of the first direction X and the second direction Y in the direction of resultant force in opposition to the mass 2, thereby enabling the linear motor to vibrate in the direction of resultant force.
Therefore, the linear motor can realize the vibration along the first direction X and the second direction Y, can provide the vibration along the first direction X and the second direction Y for the electronic equipment, can save the use quantity of the linear motor in the electronic equipment, can provide the vibration along the resultant force direction for the electronic equipment, further increases the vibration mode of the electronic equipment, meets the various vibration feedback requirements of users, has simple structure, strong vibration sense and good stability, can save cost, and is beneficial to the miniaturization design of the electronic equipment.
Specifically, as shown in fig. 1, the driving part 4 can also drive the mass 2 to reciprocate along a third direction Z, which is perpendicular to the first direction X and the second direction Y.
In this embodiment, when the linear motor is required to provide the vibration sense along the third direction Z, the driving portion 4 can generate the driving force along the third direction Z to drive the mass block 2 to reciprocate along the third direction Z, the elastic member 3 on one side of the mass block 2 along the third direction Z is compressed between the mass block 2 and the housing 1, the elastic member 3 on the other side extends between the mass block 2 and the housing 1 and alternates back and forth at a certain frequency, the elastic member 3 can react with the mass block 2 along the third direction Z to ensure that the mass block 2 cannot interfere with the housing 1, such as impact, and the like, to ensure the vibration stability of the linear motor, and reduce the vibration noise of the linear motor, and meanwhile, the driving portion 4 and the elastic member 3 can also react with the housing 1 to enable the linear motor to integrally move along the third direction Z and the mass block 2, so that the linear motor can realize the vibration along the third direction Z.
Wherein, since the first direction X, the second direction Y and the third direction Z are perpendicular to each other, when the driving part 4 simultaneously generates driving forces in the first direction X, the second direction Y and the third direction Z, the mass 2 can reciprocate in the resultant force direction thereof, so that the linear motor as a whole can reversely move with the mass 2 in the resultant force direction in three-dimensional space, thereby enabling the linear motor to vibrate in the resultant force direction.
Therefore, the linear motor can vibrate along the third direction Z, can provide vibration along the third direction Z for the electronic equipment, can vibrate along the force combining direction in the three-dimensional space, can provide vibration in the three-dimensional space for the electronic equipment, further increases the vibration mode of the electronic equipment, meets the higher three-dimensional vibration feedback requirement of a user, and brings better vibration experience for the user.
In a specific embodiment, as shown in fig. 1 to 5, the driving part 4 includes a coil 41 and a magnet 42, the coil 41 is fixed to the housing 1, the magnet 42 is fixed to the mass 2, and the coil 41 is disposed corresponding to the magnet 42.
In this embodiment, as shown in fig. 1 to 3, when the coil 41 is energized, the coil 41 generates a magnetic field, so that the energized coil 41 interacts with the corresponding magnet 42 to generate a driving force, and the driving mass 2 moves in any direction in the housing 1.
Of course, the driving unit 4 may be another driving member, and is not limited thereto.
In a specific embodiment, the linear motor further comprises a flexible circuit board (not shown in the figures) electrically connected to the coil 41.
In this embodiment, the flexible circuit board may provide an ac voltage to the coil 41, so that the coil 41 can generate a magnetic field to interact with the magnet 42 to generate a driving force, as shown in fig. 1, 4 and 5, the current direction of the ac current is periodically changed in the coil 41, the direction of the magnetic field generated by the coil 41 is also periodically changed, so that the magnetic pole of the coil 41 facing the side of the mass 2 is periodically changed, and thus the direction of the driving force is periodically changed, and the mass 2 can be driven to reciprocate along the driving force direction under the support of the elastic member 3, so as to realize the vibration of the linear motor in the driving force direction. Therefore, the vibration frequency of the linear motor can be controlled by controlling the change frequency of the alternating current in the coil, so that different vibration touch feeling is generated, and the experience effect of a user is improved. In addition, by changing the magnitude of the current in the coil 41, the magnitude of the magnetic field generated by the coil 41 can be changed, so that the magnetic magnitude of the magnetic pole of the coil 41 facing to the side of the mass block 2 is changed, the driving magnitude is also changed, the vibration intensity of the mass block 2 is improved, the vibration sense of the linear motor can be improved, and better prompting effect and vibration feedback are achieved.
In a specific embodiment, as shown in fig. 1 to 5, the coil 41 includes two first coils 411, two second coils 412, and two third coils 413, the magnet 42 further includes two first magnets 421, two second magnets 422, and two third magnets 423, the two first magnets 421 are fixed on two sides of the mass 2 along the first direction X, the two second magnets 422 are fixed on two sides of the mass 2 along the second direction Y, the third magnets 423 are fixed on two sides of the mass 2 along the third direction Z, the two first coils 411 are fixed on two sides of the housing 1 along the first direction X, the two second coils 412 are fixed on two sides of the housing 1 along the second direction Y, the third coils 413 are fixed on two sides of the housing 1 along the third direction Z, the first coils 411 are disposed corresponding to the first magnets, the second coils 421 are disposed corresponding to the second magnets 422, and the third coils 413 are disposed corresponding to the third magnets 423.
In this embodiment, in this structure, the first coil 411 and the first magnet 421 along the first direction X, the second coil 412 and the second magnet 422 along the second direction Y, and the third coil 413 and the third magnet 423 along the third direction Z can all be driven independently, so that the linear motor generates independent vibrations along the first direction X, the second direction Y or the third direction Z, and the independent vibrations are not interfered with each other, so that the stability of the vibrations is ensured, and the linear motor can also be driven simultaneously, so that the linear motor generates vibrations in the resultant force direction thereof, so that the linear motor can vibrate stably according to the formulated vibration mode, the vibration sensitivity is high, and the driving force acts on the unique mass block 2, so that vibration splitting is not easy to generate, the vibration stability is good, the vibration sense is strong, and the vibration experience of the user is further improved.
In the specific embodiment shown in fig. 4 and 5, when two first coils 411 distributed in a first direction X are simultaneously energized, the first coil 411 on one side and its corresponding first magnet 421 are attracted to each other, the first coil 411 on the other side and its corresponding first magnet 421 are repelled from each other, the mass 2 moves toward one side under the driving of electromagnetic force, and when the direction of current in the first coil 411 is changed, the magnetic poles on both sides of the first coil 411 are changed, the directions of electromagnetic force on both sides of the mass 2 are changed, and the mass 2 is driven to move toward the other side, so that the mass 2 can reciprocate in the first direction X under the driving of electromagnetic force generated by the first coil 411 and the first magnet 421, thereby causing the linear motor to generate individual vibrations in the first direction X. Similarly, the linear motor may generate vibration in the second direction Y when two second coils 412 distributed in the second direction Y are simultaneously energized, and may generate vibration in the third direction Z when two third coils 413 distributed in the third direction Z are simultaneously energized.
In addition, when the two first coils 411 and the two second coils 412 are energized at the same time, the driving section 4 generates driving forces in the first direction X and the second direction Y at the same time, the linear motor can generate vibration in the resultant force direction of the driving forces in the first direction X and the driving forces in the second direction Y, and when the magnitude of the current in the first coil 411 and/or the second coil 412 is changed so that the magnitude of the current in the first coil 411 and the magnitude of the current in the second coil 412 are different, the direction of the resultant force in the plane can be changed. Similarly, when the two first coils 411 and the two third coils 413 are energized simultaneously, the driving section 4 generates driving forces in the first direction X and the third direction Z simultaneously, the linear motor may generate vibrations in the direction of resultant force thereof, and when the two second coils 412 and the two third coils 413 are energized simultaneously, the driving section 4 generates driving forces in the second direction Y and the third direction Z simultaneously, and the linear motor may generate vibrations in the direction of resultant force thereof.
Further, when the two first coils 411, the two second coils 412, and the two third coils 413 are energized at the same time, the driving section 4 simultaneously generates driving forces in the first direction X, the second direction Y, and the third direction Z, and the linear motor can generate vibrations in the resultant force direction thereof, satisfying the vibrations in the three-dimensional space. When the current in the first coil 411 and/or the second coil 412 and/or the third coil 413 is changed, and the current in the first coil 411 and/or the second coil 412 and/or the third coil 413 is different, the direction of the resultant force in the three-dimensional space can be changed, so that the vibration experience of the three-dimensional tactile feedback of the user is satisfied.
It should be noted that the alternating current frequencies in the first coil 411, the second coil 412, and the third coil 413 in any of the above embodiments need to be uniform to make the vibration of the mass 2 smoother.
In one embodiment, the material of the housing 1 is a non-magnetically conductive material, so that the housing 1 can be prevented from being magnetized by the magnetic field generated by the coil 41 to generate a magnetic field during the process of energizing the coil 41, and interfering with other magnets 42 or coils 41 to change the driving force or twist the mass block 2, so as to improve the vibration stability of the mass block 2, so that the linear motor can vibrate according to a customized vibration mode, and improve the vibration sensitivity.
In one embodiment, as shown in fig. 3 and 5, the first magnet 421, the second magnet 422, and the third magnet 423 are disposed at intervals therebetween.
In this embodiment, as shown in fig. 3 and 5, the first magnet 421 is kept at a certain distance from the second magnet 422 and the third magnet 423, so that when the first magnet 421 interacts with the first coil 411, the second coil 412 and/or the third coil 413 are prevented from being simultaneously energized, the magnetic field generated by the second coil 412 and/or the third coil 413 interferes with the first magnet 421 to cause the torsion of the mass 2, and similarly, the second magnet 422 can avoid the interference of the first coil 411 and/or the third coil 413, and the third magnet 423 can avoid the interference of the first coil 411 and/or the second coil 412. Therefore, the first magnet 421, the second magnet 422 and the third magnet 423 are arranged at intervals, so that the mass block 2 can be prevented from being disturbed by other magnetic fields to generate torsion when vibrating along a certain direction, the vibration stability of the mass block 2 is improved, and the vibration effect of the linear motor is ensured.
In one embodiment, as shown in fig. 3 and 5, the mass 2 is provided with a recess 21, and the magnet 42 is embedded in the recess 21.
In this embodiment, the magnet 42 is embedded in the groove 21, so that the connection strength between the magnet 42 and the mass block 2 can be improved, the magnet 42 is not easy to displace under the action of the magnetic field generated by the coil 41, the failure or damage of the linear motor caused by the separation of the magnet 42 in the vibration process of the linear motor is avoided, the structural stability and the service life of the linear motor are improved, and the linear motor has a simple structure and low production and manufacturing cost.
Taking the first magnets 421 disposed along the two sides of the first direction X of the mass 2 as an example, as shown in the specific embodiment in fig. 5, the magnetic poles of the two first magnets 421 are opposite, so that the two first magnets 421 can be prevented from mutually repelling the two separating grooves 21, further improving the structural stability of the linear motor, and it should be noted that the directions of the currents passing through the two first coils 411 should be opposite at this time, so that the first coils 411 and the first magnets 421 on one side of the mass 2 can attract each other, and the first coils 411 and the first magnets 421 on the other side can repel each other, so as to ensure that the directions of electromagnetic forces on two sides of the mass 2 are consistent, and sufficient driving force can be generated to drive the mass 2 to vibrate smoothly.
In one embodiment, the mass 2 is a non-magnetically permeable material.
In this embodiment, when the mass block 2 is made of a non-magnetic conductive material, the first magnet 421, the second magnet 422 and the third magnet 423 embedded on the mass block 2 can be prevented from interfering with each other, and the mass block 2 is prevented from being twisted due to the interference of the magnetic field generated by the coil 41, so that the vibration stability of the mass block 2 is further improved.
In another embodiment, as shown in fig. 4 and 5, the linear motor may further include a pole core 5, the pole core 5 is disposed on the inner side of the housing 1, and the coil 41 is sleeved on the pole core 5.
In this embodiment, when the coil 41 is energized, the pole core 5 can be magnetized by the magnetic field generated by the coil 41 to generate a magnetic field, so that the magnetic field of the pole core 5 and the magnetic field of the coil 41 are mutually overlapped, thereby enhancing the magnetic property of the coil 41, enhancing the driving force and enabling the driving force to interact with the magnet 42 more easily, thereby saving electric energy and further reducing the cost.
The pole core 5 may be an iron core, or may be made of other magnetizable materials, which is not limited herein.
In a specific embodiment, as shown in fig. 1 to 5, the mass 2 and the housing 1 are square or rectangular, the mass 2 has eight first corners 22, the housing 1 has eight second corners 11, the linear motor has eight elastic members 3, one ends of the eight elastic members 3 are connected to the first corners 22, and the other ends of the eight elastic members 3 are connected to the second corners 11, so that the mass 2 is suspended in the housing 1.
In this embodiment, the elastic member 3 may provide support for the mass 2, so that the mass 2 is suspended in the housing 1, so that the mass 2 has a distance condition capable of vibrating, which can avoid the mass 2 contacting with the housing 1 or the coil 41 and other components during the vibration process, reduce vibration, improve vibration stability, and the first corner 22 of the mass 2 is connected with the second corner 11 of the housing 1 through the elastic member 3, so that the interference between the elastic member 3 and the mass 2, the coil 41, the magnet 42 and other components can be avoided to the greatest extent while the supporting effect of the elastic member 3 is ensured.
In one embodiment, the elastic member 3 is a spring or a shrapnel.
In this embodiment, when the elastic member 3 is a spring or an elastic sheet, the elastic member 3 can generate elastic deformation along any direction, so as to ensure that when the mass block 2 vibrates along any direction, the elastic member 3 can provide uniform supporting force for the mass block 2, so as to ensure the vibration stability of the mass block 2, so that the linear motor can have better vibration effect, and the spring and the elastic sheet have simple structures, are convenient to process and manufacture, and can reduce the manufacturing cost of the elastic member 3.
When the elastic piece 3 is a spring piece, a hollow structure can be arranged on the spring piece to ensure that the spring piece can generate elastic deformation in multiple directions.
It should be noted that the elastic coefficient of the elastic member 3 in each direction in any of the above embodiments should be the same, so as to ensure that the elastic member 3 can provide a uniform supporting force for the mass block in any direction.
In addition, according to the dynamics principle, the acceleration of the mass 2 is mainly affected by the mass of the mass 2, the magnetic field strength of the magnet 42, the number of turns and the length of the coil 41, the current in the coil 41, the elastic coefficient of the elastic piece 3 in the moving direction, and the like, so that the mass 2, the magnet 42, the coil 41 and the elastic piece 3 with proper parameters can be selected according to the use requirement of a product in the manufacturing process of the linear motor, and the vibration intensity and the touch sense of the linear motor are controlled by controlling the magnitude and the frequency of the alternating current in the coil 41 so as to meet the requirement of the product, and the user has better use experience.
In addition, according to the dynamics principle, the overall acceleration of the linear motor is proportional to the mass of the mass block 2, that is, the larger the mass of the mass block 2 with the same volume is, the larger the overall acceleration of the linear motor is, so that the vibration feeling of the linear motor is stronger, therefore, in order to achieve the ideal vibration effect, the mass block 2 can be made of a non-magnetic conductive material with higher density, so as to improve the vibration feeling of the linear motor. Alternatively, the volume of the mass block 2 may be increased to make the linear motor have a stronger vibration effect, and the linear motor has a larger volume and requires a larger installation space, so that the linear motor may be suitable for electronic devices such as game handles, which do not have strict requirements on the internal size space.
The application also provides an electronic device comprising a housing and the linear motor in any of the above embodiments, the linear motor being mounted in the housing. Since the linear motor has the above technical effects, the electronic device including the linear motor should also have the above technical effects, and will not be described herein.
It will be appreciated by those skilled in the art that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device. In other possible embodiments of the application, the electronic device may include more components than those shown, or certain components may be combined, or certain components may be split, or different arrangements of components.
The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. A linear motor, comprising:
a housing;
the mass block is arranged in the shell;
the elastic piece is connected with the shell through the mass block, and the mass block is suspended in the shell;
the driving part is arranged in the shell and is used for driving the mass block to reciprocate in any direction in the shell;
the driving part comprises a coil and a magnet, wherein the coil is fixed on the shell, and the magnet is fixed on the mass block; the coil is arranged corresponding to the magnet;
the coil comprises two first coils, two second coils and two third coils, and the magnet further comprises two first magnets, two second magnets and two third magnets;
the two first magnets are fixed on two sides of the mass block along the first direction, the two second magnets are fixed on two sides of the mass block along the second direction, and the third magnets are fixed on two sides of the mass block along the third direction;
two first coils are fixed on two sides of the shell along the first direction, two second coils are fixed on two sides of the shell along the second direction, and the third coils are fixed on two sides of the shell along the third direction;
the first coil is arranged corresponding to the first magnet, the second coil is arranged corresponding to the second magnet, and the third coil is arranged corresponding to the third magnet;
the mass block and the shell are square or cuboid, the mass block is provided with eight first corners, and the shell is provided with eight second corners;
the linear motor is provided with eight elastic pieces, one ends of the eight elastic pieces are connected with the first angle, and the other ends of the eight elastic pieces are connected with the second angle, so that the mass block is suspended in the shell.
2. The linear motor according to claim 1, wherein the driving portion is capable of driving the mass to reciprocate in a first direction and a second direction;
the first direction and the second direction are perpendicular to each other.
3. The linear motor of claim 2, wherein the drive section is further capable of driving the mass to reciprocate in a third direction;
the third direction is perpendicular to the first direction and the second direction in pairs.
4. The linear motor of claim 1, wherein the first magnet, the second magnet, and the third magnet are disposed in a spaced apart relationship.
5. The linear motor of claim 1, wherein the mass is provided with a recess, the magnet being nested within the recess.
6. The linear motor of claim 1, further comprising a pole core disposed inside the housing, the coil being nested within the pole core.
7. The linear motor of claim 1, further comprising a flexible circuit board electrically connected to the coil.
8. The linear motor of any one of claims 1 to 7, wherein the mass is a non-magnetically permeable material.
9. A linear motor according to any one of claims 1 to 7, wherein the resilient member is a spring or a leaf spring.
10. An electronic device comprising a housing and the linear motor of any one of claims 1 to 9, the linear motor being mounted within the housing.
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| CN202210975328.XA CN115622354B (en) | 2022-08-15 | 2022-08-15 | Linear motor and electronic equipment |
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