CN115622354A - Linear motor and electronic equipment - Google Patents
Linear motor and electronic equipment Download PDFInfo
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- CN115622354A CN115622354A CN202210975328.XA CN202210975328A CN115622354A CN 115622354 A CN115622354 A CN 115622354A CN 202210975328 A CN202210975328 A CN 202210975328A CN 115622354 A CN115622354 A CN 115622354A
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- 230000000694 effects Effects 0.000 abstract description 27
- 239000000725 suspension Substances 0.000 abstract description 4
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- 238000004519 manufacturing process Methods 0.000 description 9
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- 230000006870 function Effects 0.000 description 4
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- 230000001133 acceleration Effects 0.000 description 3
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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
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Abstract
The utility model relates to a linear motor and electronic equipment, which comprises a housin, the quality piece, elastic component and drive division, the quality piece sets up in the casing, the quality piece passes through the elastic component and is connected with the casing, and make the quality piece suspension in the casing, the drive division sets up in the casing, be used for driving the quality piece and make reciprocating motion along arbitrary direction in the casing, make linear motor can satisfy the vibration feedback in the three-dimensional space, make research and development personnel formulate multiple vibration mode on this basis, and because only there is a quality piece, the condition that the sense of shaking cuts apart can not appear, linear motor's vibration effect is better, the sense of shaking is stronger, when linear motor is applied to electronic equipment, can satisfy the demand of the sense of shaking and the sense of touch of user in different use occasions and application scenario, user's experience effect has been promoted.
Description
Technical Field
The application relates to the technical field of motors, in particular to a linear motor and electronic equipment.
Background
The linear motor is mainly applied to electronic equipment such as mobile phones, tablet computers, wearable equipment and game pads, and is used for realizing the vibration function of the electronic equipment, such as incoming call vibration reminding of the mobile phones and vibration feedback of game equipment. The motor that present electronic equipment inside used all can only provide the vibration of single direction or two directions, and the vibration mode is less to can't satisfy the user and use the vibration demand of occasion and application scene to different use at the in-process of daily use electronic equipment, reduce user's experience effect.
Disclosure of Invention
An object of the application is to provide a linear motor and an electronic device, so as to solve the problems that the vibration modes of the linear motor are few and the various vibration requirements of a user cannot be met in the prior art.
The first aspect of the present application provides a linear motor, including casing, quality piece, elastic component and drive division, the quality piece set up in the casing, the quality piece passes through the elastic component with the casing is connected, and makes the quality piece suspension is in the casing, the drive division set up in the casing, be used for the drive the quality piece is in make reciprocating motion in the casing along arbitrary direction. The linear motor is provided with the unique mass block, the mass block is fixed and suspended inside the shell through the elastic piece and does not interfere 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, and therefore the linear motor can also reciprocate in the direction, the linear motor can meet the vibration feedback in a three-dimensional space, research and development personnel can formulate multiple vibration modes on the basis, vibration sense cracking can not occur due to the fact that only one mass block is arranged, 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 a user in different use occasions and application scenes can be met, and the experience effect of the user is improved.
In a possible design, the driving portion can drive the mass to reciprocate along a first direction and a second direction, and the first direction and the second direction are perpendicular to each other. The linear motor can realize vibration along two directions of a first direction and a second direction, can provide vibration along the first direction and the second direction for the electronic equipment, can save the using amount of the linear motor in the electronic equipment, the linear motor can also provide vibration along the resultant force direction, the vibration along the resultant force direction is provided for the electronic equipment, the vibration mode of the electronic equipment is further increased, the requirements of various vibration feedback of a user are met, the structure is simple, the vibration sense is strong, the stability is good, the cost can be saved, and the miniaturization design of the electronic equipment is facilitated.
In a possible design, the driving portion may further drive the mass to reciprocate along a third direction, and the third direction is perpendicular to the first direction and the second direction two by two. The linear motor can realize vibrating along the third direction Z, can provide the vibration along the third direction for electronic equipment, and the linear motor can also vibrate along the resultant force direction in the three-dimensional space, provides the vibration in the three-dimensional space for electronic equipment, and the vibration mode of the electronic equipment that further increases satisfies the higher three-dimensional vibration feedback demand of user, brings better vibration experience for the user.
In one possible design, the driving portion includes a coil fixed to the housing and a magnet fixed to the mass, and the coil is disposed corresponding to the magnet. When the coil is electrified, the coil can generate a magnetic field, so that the electrified coil and the corresponding magnet interact to generate driving force, the driving mass block generates movement in any direction in the shell, the driving structure has the advantages of simple and reliable structure, low cost and the like, can convert electric energy into mechanical energy, provides driving force for the movement of the mass block, occupies small space, can reduce the volume of the linear motor, and is beneficial to the miniaturization design of the linear motor.
In a possible design, the coils include two first coils, two second coils and two third coils, the magnets further include two first magnets, two second magnets and two third magnets, the two first magnets are fixed to two sides of the mass block along the first direction, the two second magnets are fixed to two sides of the mass block along the second direction, the third magnets are fixed to two sides of the mass block along the third direction, the two first coils are fixed to two sides of the housing along the first direction, the two second coils are fixed to two sides of the housing along the second direction, the third coils are fixed to two 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, along first coil and the first magnet on the first direction, along second coil and the second magnet on the second direction, along third coil and the third magnet on the third direction, all can drive alone, make linear motor produce and follow the first direction, the independent vibration of second direction or third direction, mutual noninterference each other, guarantee the stability of vibration, also can drive simultaneously, make linear motor produce the vibration of its resultant force direction, make linear motor can stabilize the vibration according to the vibration mode of formulating, vibration sensitivity is high, and drive power all acts on only quality piece, it splits to be difficult for producing the vibration, vibration stability is good, the vibration is felt strongly, user's vibration experience has further been improved.
In a possible design, the first magnet, the second magnet and the third magnet are arranged at intervals, so that the mass block is prevented from being interfered 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 a possible design, the quality piece is equipped with the recess, the magnet scarf joint in the recess, can improve the joint strength of magnet and quality piece, make the magnet be difficult for producing the displacement under the effect of the magnetic field that the coil produced, avoid the magnet to break away from at linear motor vibration in-process and cause linear motor to break down or damage, improved linear motor's structural stability and life, and simple structure, production manufacturing cost is lower.
In a possible design, the linear motor further includes a pole core disposed inside 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, and the magnetic field of the pole core and the magnetic field of the coil are mutually superposed, so that the magnetism of the coil is enhanced, the driving force is enhanced accordingly, the pole core and the coil are easier to interact with the magnet, the electric energy can be saved, and the cost is further reduced.
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 can also be periodically changed, the magnetic pole of the coil facing one side of the mass block is periodically changed, the direction of the driving force is periodically changed, the mass block can be driven to reciprocate along the direction of the driving force under the support of the elastic element, and the vibration of the linear motor in the direction of the driving force 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 senses are generated, and the experience effect of a user is improved. In addition, the size of the magnetic field generated by the coil can be changed by changing the current in the coil, so that the magnetic size of the magnetic pole of the coil facing to one side of the mass block is changed, the driving size can be changed accordingly, the vibration strength of the mass block is improved, the vibration sense of the linear motor can be improved, and the linear motor has a better prompt effect and vibration feedback.
In one possible design, the mass is a non-magnetic material. When the mass block is made of a non-magnetic material, the first magnet, the second magnet and the third magnet which are embedded in the mass block can be prevented from interfering with each other, the mass block is prevented from being interfered by a magnetic field generated by the coil to generate torsion, and the vibration stability of the mass block is further improved.
In one possible design, the mass block with the casing is square or cuboid, the mass block has eight first corners, the casing has eight second corners, the linear motor has eight the elastic component, eight the one end of elastic component with the first corner is connected, eight the other end of elastic component with the second corner is connected, so that the mass block suspension is in the casing. The elastic component can provide the support for the quality piece, make the quality piece suspension 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 at the vibration in-process, reduce the vibration and cause, improve vibration stability, and the first angle of quality piece passes through the elastic component and is connected and suspend in the casing with the second angle of casing, when guaranteeing the supporting role of elastic component, can avoid the interference of parts such as elastic component and quality piece in furthest, the coil, magnet, in addition, in this structure, every elastic component can both provide even holding power for the vibration of quality piece in all directions, guarantee the vibration stationarity of quality piece, so that make linear motor can steady vibration, improve linear motor's vibration effect.
In one possible design, the elastic member is a spring or a leaf spring. When the elastic piece is a spring or a spring sheet, the elastic piece can generate elastic deformation in any direction, so that the elastic piece can provide even supporting force for the mass block when the mass block vibrates in any direction, the vibration stability of the mass block is guaranteed, the linear motor can have a better vibration effect, and the spring sheet are simple in structure, convenient to process and manufacture and capable of reducing the manufacturing cost of the elastic piece.
A second aspect of the present application provides an electronic device comprising a housing and the linear motor of any of the above embodiments, 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 the details are not 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.
Drawings
Fig. 1 is a schematic structural diagram 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 structural diagram 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 shell;
11-a second angle;
2-a mass block;
21-a groove;
22-first corner;
3-an elastic member;
4-a drive section;
41-a coil;
411-first coil;
412-a second coil;
413-a third coil;
42-a magnet;
421-a first magnet;
422-a second magnet;
423-third magnet;
5-pole core;
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 present application and together with the description, serve to explain the principles of the application.
Detailed Description
First, a description will be given of the related art: in the process of using the mobile phone by daily users, different vibration requirements can be met according to different use occasions and application scenes. Most of motors used in existing electronic equipment can only provide motion in one direction, the mode is single, the generated vibration sense is not strong, and in addition, some motor correlation techniques with linear vibration in two directions exist, so that linear motors in the electronic equipment can vibrate in two directions, but three-dimensional vibration cannot be performed, the vibration requirements of users in different use occasions and application scenes cannot be met, for example, incoming call vibration, alarm reminding, game feedback and the like, and the experience effect of the users is reduced.
In order to solve the above technical problem, an embodiment of the present application provides a linear motor, which can be installed in an electronic device to implement a vibration function of the electronic device. The electronic device may be any electronic device that may have a vibration function, such as a mobile phone, a tablet computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a Personal Digital Assistant (PDA), an Augmented Reality (AR) device, a Virtual Reality (VR) device, an Artificial Intelligence (AI) device, a wearable device, a vehicle-mounted device, an intelligent home device and/or smart city device, a game pad, and the like. The embodiment of the present application does not particularly limit the specific form of the electronic device, and for convenience of description, the following description takes the electronic device as a mobile phone as an example.
In order to better understand the technical solution of the present application, the following detailed description is made with reference to the accompanying drawings.
The embodiment of the present application provides a linear motor, as shown in fig. 1, including a housing 1, a mass block 2, an elastic member 3, and a driving portion 4, where the mass block 2 is disposed in the housing 1, the mass block 2 is connected to the housing 1 through the elastic member 3, and the mass block 2 is suspended in the housing 1, and the driving portion 4 is disposed in the housing 1 and is configured to drive the mass block 2 to reciprocate in any direction in the housing 1.
In this embodiment, as shown in fig. 1, the linear motor has a unique mass block 2, and is fixed and suspended inside the housing 1 through the elastic member 3, so that the mass block 2 does not interfere with the housing 1, the driving portion 4 can directly drive the mass block 2 to reciprocate in the housing 1 in any direction and supported by the elastic member 3, and meanwhile, the driving portion 4 and the elastic member 3 can react with the housing 1, so that the linear motor can also reciprocate in the direction, so that the linear motor can meet the vibration feedback in a three-dimensional space, so that research and development personnel can formulate a plurality of vibration modes on the basis.
For example, when some flat electronic devices are placed in scenes such as a desktop, vibration perpendicular to the desktop can make the vibration effect of the electronic devices more obvious, so that a better prompt effect is achieved, in addition, in some application software with three-dimensional scenes, three-dimensional vibration can better simulate the occurrence of events, the linear motor can provide vibration feedback in a three-dimensional space, the user can be provided with experience closer to reality, a better prompt effect is achieved, and the experience effect of the user is improved.
Specifically, as shown in fig. 1, the driving portion 4 can drive the mass 2 to reciprocate along a first direction X and a 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, the mass block 2 is driven to reciprocate in the first direction X, the elastic member 3 on one side of the mass block 2 along the first direction X 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 on the mass block 2 along the first direction X to ensure that the mass block 2 does not generate interference phenomena such as impact and the like with the housing 1, 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 on the housing 1 to enable the entire linear motor to move in a reverse direction with the mass block 2 along the first direction X, so that the linear motor can realize vibration along the first direction X.
When the linear motor is required to provide a vibration sense along the second direction Y, the driving portion 4 can generate a driving force along the second direction Y to drive the mass block 2 to reciprocate in the second direction Y, the elastic element 3 on one side of the mass block 2 along the second direction Y is compressed between the mass block 2 and the housing 1, the elastic element 3 on the other side extends between the mass block 2 and the housing 1 and alternates back and forth at a certain frequency, and the elastic element 3 can react on the mass block 2 along the second direction Y to ensure that the mass block 2 does not generate interference phenomena such as collision and the like with the housing 1, 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 element 3 can also react on the housing 1 to ensure that the whole linear motor can reversely move with the mass block 2 along the second direction Y, so that the linear motor can realize vibration along the second direction Y.
When the driving part 4 simultaneously generates driving forces along the first direction X and the second direction Y, the mass block 2 can reciprocate in the direction of the resultant force, so that the whole linear motor can move in the direction opposite to the mass block 2 along the direction of the resultant force in the plane of the first direction X and the second direction Y, and the linear motor can realize vibration along the direction of the resultant force.
Therefore, the linear motor can realize vibration in the first direction X and the second direction Y, can provide vibration in the first direction X and the second direction Y for the electronic equipment, can save the using amount of the linear motor in the electronic equipment, can also realize vibration in the resultant force direction, and can provide vibration in the resultant force direction for the electronic equipment, so that the vibration modes of the electronic equipment are further increased, and various vibration feedback requirements of users are met.
Specifically, as shown in fig. 1, the driving portion 4 can also drive the mass block 2 to reciprocate along a third direction Z, which is perpendicular to the first direction X and the second direction Y two by two.
In this embodiment, when the linear motor is required to provide a vibration sense along the third direction Z, the driving portion 4 can generate a driving force along the third direction Z, the mass block 2 is driven to reciprocate in the third direction Z, the elastic element 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 element 3 on the other side extends between the mass block 2 and the housing 1 and alternates back and forth at a certain frequency, and the elastic element 3 can react on the mass block 2 along the third direction Z to ensure that the mass block 2 does not generate interference phenomena such as collision and the like with the housing 1, 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 element 3 can also react on the housing 1 to enable the whole linear motor to move in a reverse direction to the mass block 2 along the third direction Z, so that the linear motor can realize vibration along the third direction Z.
Because the first direction X, the second direction Y and the third direction Z are perpendicular to each other, when the driving portion 4 simultaneously generates driving forces along the first direction X, the second direction Y and the third direction Z, the mass block 2 can reciprocate in the resultant force direction thereof, so that the linear motor as a whole can move in the opposite direction to the mass block 2 in the resultant force direction in a three-dimensional space, and the linear motor can realize vibration along the resultant force direction.
Therefore, the linear motor of the application can realize vibration along the third direction Z, can provide vibration along the third direction Z for the electronic equipment, and the linear motor can also vibrate along the resultant force direction in the three-dimensional space, provides vibration in the three-dimensional space for the electronic equipment, further increases the vibration mode of the electronic equipment, satisfies the higher three-dimensional vibration feedback requirement of the user, and brings better vibration experience for the user.
In one embodiment, as shown in fig. 1 to 5, the driving portion 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 and the magnet 42 are disposed correspondingly.
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 block 2 generates a motion 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 includes a flexible circuit board (not shown), and the flexible circuit board is 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, a current direction of the ac current periodically changes in the coil 41, the direction of the magnetic field generated by the coil 41 also periodically changes, a magnetic pole of the coil 41 facing the side of the mass 2 periodically changes, and a direction of the driving force is accordingly periodically changed, so that the mass 2 can be driven to reciprocate along the driving force direction under the support of the elastic member 3, and 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 senses are 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 the mass block 2 is changed, the driving magnitude is changed accordingly, the vibration strength of the mass block 2 is improved, the vibration sense of the linear motor can be improved, and a better prompt effect and vibration feedback are provided.
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 to two sides of the mass 2 along the first direction X, the two second magnets 422 are fixed to two sides of the mass 2 along the second direction Y, the third magnets 423 are fixed to two sides of the mass 2 along the third direction Z, the two first coils 411 are fixed to two sides of the housing 1 along the first direction X, the two second coils 412 are fixed to two sides of the housing 1 along the second direction Y, the third coils 413 are fixed to two sides of the housing 1 along the third direction Z, the first coils 411 are disposed corresponding to the first magnets 421, the second coils 412 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 the 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 be driven independently, so that the linear motor generates independent vibration along the first direction X, the second direction Y, or the third direction Z, which do not interfere with each other, thereby ensuring stability of vibration, and the linear motor can also be driven simultaneously, so that the linear motor generates vibration along the resultant force direction, thereby enabling the linear motor to stably vibrate according to a specified vibration mode, and having high vibration sensitivity, and the driving force acts on the unique mass block 2, thereby being difficult to generate vibration splitting, having good vibration stability and strong vibration sensation, and further improving vibration experience of users.
In the embodiment shown in fig. 4 and 5, when two first coils 411 distributed along the first direction X are simultaneously energized, the first coil 411 on one side and the corresponding first magnet 421 attract each other, the first coil 411 on the other side and the corresponding first magnet 421 repel each other, the mass 2 moves towards one side under the driving of electromagnetic force, when the direction of current in the first coil 411 changes, the magnetic poles on both sides of the first coil 411 change, the direction of electromagnetic force on both sides of the mass 2 changes, and the mass 2 is driven to move towards the other side, so that the mass 2 can reciprocate along the first direction X under the driving of electromagnetic force generated by the first coil 411 and the first magnet 421, thereby enabling the linear motor to generate independent vibration along the first direction X. Similarly, when two second coils 412 distributed in the second direction Y are simultaneously energized, the linear motor may generate vibration in the second direction Y, and when two third coils 413 distributed in the third direction Z are simultaneously energized, the linear motor may generate vibration in the third direction Z.
In addition, when the two first coils 411 and the two second coils 412 are simultaneously energized, the driving portion 4 simultaneously generates driving forces in the first direction X and the second direction Y, the linear motor can generate vibration in a direction of a resultant force 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 magnitudes of the currents in the first coil 411 and 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 simultaneously energized, the driving part 4 simultaneously generates driving forces in the first direction X and the third direction Z, and the linear motor can generate vibrations in the direction of the resultant thereof, and when the two second coils 412 and the two third coils 413 are simultaneously energized, the driving part 4 simultaneously generates driving forces in the second direction Y and the third direction Z, and the linear motor can generate vibrations in the direction of the resultant thereof.
Further, when the two first coils 411, the two second coils 412, and the two third coils 413 are energized simultaneously, the driving portion 4 generates driving forces in the first direction X, the second direction Y, and the third direction Z simultaneously, and the linear motor can generate vibration in a resultant direction thereof, satisfying vibration in a three-dimensional space. When the current in the first coil 411, the second coil 412 and/or the third coil 413 is changed to enable the current in the first coil 411, the second coil 412 and/or the third coil 413 to be different, the direction of the resultant force in the three-dimensional space can be changed, and the vibration experience of three-dimensional stereo tactile feedback of a user can be met.
It should be noted that the frequencies of the alternating currents in the first coil 411, the second coil 412 and the third coil 413 in any of the above embodiments need to be consistent to make the vibration of the mass block 2 smoother.
In one embodiment, the material of the housing 1 is non-magnetic conductive material, so that it can be avoided that the magnetic field generated by the coil 41 is magnetized to generate a magnetic field when the coil 41 is energized, and the magnetic field interferes with other magnets 42 or the coil 41, which causes a change in driving force or torsion of the mass block 2, and the vibration stability of the mass block 2 is improved, so that the linear motor can vibrate in a customized vibration mode, and the vibration sensitivity is improved.
In one embodiment, as shown in fig. 3 and 5, the first magnet 421, the second magnet 422, and the third magnet 423 are spaced apart from each other.
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 the interaction between the first magnet 421 and the first coil 411 can be ensured, and at the same time, when the first coil 411, the second coil 412 and/or the third coil 413 are 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 mass 2 to generate torsion. Therefore, the first magnet 421, the second magnet 422, and the third magnet 423 are disposed at intervals, so that the mass block 2 is prevented from being interfered by other magnetic fields to generate torsion when vibrating in 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, the magnet 42 fitting into the recess 21.
In this embodiment, the magnet 42 is embedded in the groove 21, which can improve the connection strength between the magnet 42 and the mass block 2, so that the magnet 42 is not easy to displace under the action of the magnetic field generated by the coil 41, thereby avoiding the failure or damage of the linear motor caused by the magnet 42 breaking away in the vibration process of the linear motor, improving the structural stability and prolonging the service life of the linear motor, and having simple structure and low production and manufacturing costs.
Taking the first magnets 421 disposed along the two sides of the mass 2 in the first direction X as an example, the magnetic poles of the two first magnets 421 are disposed as shown in the specific embodiment in fig. 5, the magnetic poles of the adjacent sides of the two first magnets 421 are opposite, so that the two first magnets 421 can be prevented from repelling each other and separating from the groove 21, and the structural stability of the linear motor is further improved.
In one embodiment, the mass 2 is a non-magnetic material.
In this embodiment, when the mass block 2 is made of a non-magnetic material, the first magnet 421, the second magnet 422, and the third magnet 423, which are embedded in the mass block 2, can be prevented from interfering with each other, and the mass block 2 is prevented from being distorted by the magnetic field generated by the coil 41, so as to further improve the vibration stability of the mass block 2.
In another embodiment, as shown in fig. 4 and 5, the linear motor may further include a pole piece 5, the pole piece 5 is disposed inside the housing 1, and the coil 41 is sleeved on the pole piece 5.
In this embodiment, when the coil 41 is energized, the pole piece 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 piece 5 and the magnetic field of the coil 41 are mutually superposed, the magnetism of the coil 41 is enhanced, the driving force is enhanced accordingly, the pole piece is easier to interact with the magnet 42, the electric energy can be saved, and the cost is further reduced.
The pole core 5 may be an iron core, or a pole core made of other magnetizable materials, which is not limited herein.
In one 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 end of each of the eight elastic members 3 is connected to the first corner 22, and the other end of each of the eight elastic members 3 is connected to the second corner 11, so that the mass 2 is suspended in the housing 1.
In this embodiment, the elastic member 3 may provide a support for the mass block 2, so that the mass block 2 is suspended in the housing 1, so that the mass block 2 has a distance condition capable of vibrating, which can prevent the mass block 2 from contacting with the housing 1 or components such as the coil 41 in the vibrating process, thereby reducing vibration, and improving vibration stability, and the first corner 22 of the mass block 2 is connected with the second corner 11 of the housing 1 through the elastic member 3 and suspended in the housing 1, so as to avoid interference between the elastic member 3 and the mass block 2, the coil 41, the magnet 42, and other components to the maximum extent, while ensuring the supporting function of the elastic member 3, in this structure, each elastic member 3 can provide uniform supporting force for the vibration of the mass block 2 in each direction, thereby ensuring the vibration stability of the mass block 2, so that the linear motor can vibrate stably, and improving the vibration effect of the linear motor.
In one embodiment, the elastic member 3 is a spring or a leaf spring.
In this embodiment, when elastic component 3 is spring or shell fragment, can make elastic component 3 can produce elastic deformation along arbitrary direction, in order to guarantee when quality piece 2 vibrates along arbitrary direction, elastic component 3 all can provide even holding power for quality piece 2, guarantee quality piece 2's vibration stationarity, in order to make linear motor can have better vibration effect, and the simple structure of spring and shell fragment, the manufacturing of being convenient for can reduce elastic component 3's manufacturing cost.
When the elastic member 3 is a spring plate, a hollow structure can be arranged on the spring plate to ensure that the spring plate can generate elastic deformation in multiple directions.
It should be noted that the elastic coefficient of the elastic member 3 in any of the above embodiments should be the same in all directions to ensure that the elastic member 3 can provide uniform supporting force for the mass in any direction.
In addition, according to the dynamic principle, the acceleration of the mass block 2 is mainly influenced by the mass of the mass block 2, the magnetic field strength of the magnet 42, the number of turns and the length of the coil 41, the magnitude of the current in the coil 41, the elastic coefficient of the elastic member 3 in the motion direction and the like, so that the mass block 2, the magnet 42, the coil 41 and the elastic member 3 with appropriate parameters can be selected according to the use requirements of products in the manufacturing process of the linear motor, and the vibration strength and the touch feeling of the linear motor are controlled by controlling the magnitude and the frequency of the alternating current in the coil 41, so that the product requirements are met, and users have better use experience.
In addition, according to the dynamic principle, the overall acceleration of the linear motor is proportional to the mass of the mass block 2, i.e. the greater the mass of the mass block 2 with the same volume, the greater the overall acceleration of the linear motor, so as to make the vibration sense of the linear motor stronger, therefore, in order to achieve the ideal vibration effect, the mass block 2 can be made of a non-magnetic conductive material with a higher density, so as to improve the vibration sense of the linear motor. Or, 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 needs a larger installation space, and may be applied to electronic devices such as game pads, etc. which do not have strict requirements for internal size space.
The present application further provides an electronic device, which includes a housing and the linear motor in any of the above embodiments, and the linear motor is installed 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 the details are not described herein.
It can be understood by those skilled in the art that the structure illustrated in the embodiments of the present application does not constitute a specific limitation to the electronic device. In other possible embodiments of the present application, the electronic device may include more components than those shown, or combine certain components, or split certain components, or a different arrangement of components.
The above description is only for the specific 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 conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (13)
1. A linear motor, comprising:
a housing;
a mass disposed within the housing;
the elastic piece is used for connecting the mass block with the shell and suspending the mass block in the shell;
the driving part is arranged in the shell and used for driving the mass block to do reciprocating motion in any direction in the shell.
2. The linear motor of claim 1, wherein the drive 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 portion is further configured to drive 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 drive portion includes a coil fixed to the housing and a magnet fixed to the mass;
the coil is arranged corresponding to the magnet.
5. The linear motor of claim 4, wherein the coils comprise two first coils, two second coils, and two third coils, the magnets further comprising 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;
the two first coils are fixed on two sides of the shell along the first direction, the 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.
6. The linear motor of claim 5, wherein the first magnet, the second magnet, and the third magnet are spaced apart.
7. Linear motor according to claim 4, characterized in that the mass is provided with a recess, in which the magnet engages.
8. The linear motor according to claim 4, further comprising a pole piece disposed inside the housing, the coil being sleeved on the pole piece.
9. The linear motor of claim 4, further comprising a flexible circuit board electrically connected to the coil.
10. A linear motor according to any one of claims 1 to 9, wherein the mass is of a non-magnetic material.
11. The linear motor according to any one of claims 1 to 9, wherein the mass and the housing are square or rectangular, the mass having eight first corners, and the housing having 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.
12. The linear motor according to any one of claims 1 to 9, wherein the elastic member is a spring or a leaf spring.
13. An electronic device comprising a housing and the linear motor of any one of claims 1 to 12, wherein the linear motor is mounted in 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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