CN113258821B - Vibration motor and electronic device - Google Patents
Vibration motor and electronic device Download PDFInfo
- Publication number
- CN113258821B CN113258821B CN202110532126.3A CN202110532126A CN113258821B CN 113258821 B CN113258821 B CN 113258821B CN 202110532126 A CN202110532126 A CN 202110532126A CN 113258821 B CN113258821 B CN 113258821B
- Authority
- CN
- China
- Prior art keywords
- deformation
- piezoelectric
- vibration
- structural member
- vibration motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005452 bending Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/001—Driving devices, e.g. vibrators
- H02N2/0015—Driving devices, e.g. vibrators using only bending modes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- 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
-
- 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
- H02K33/04—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 wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/005—Mechanical details, e.g. housings
Abstract
The application discloses a vibration motor and electronic equipment, which belong to the field of communication equipment, wherein the vibration motor comprises a shell, a mass block, a deformation piece matched with the mass block, a first vibration assembly and a second vibration assembly, wherein two opposite ends of the deformation piece are fixed on the shell, and the deformation piece is positioned between a first surface and a second surface which are oppositely arranged in the shell; the first vibration assembly comprises a driving piece which is arranged on the shell and matched with the mass block; the second vibration component comprises a first piezoelectric structural member attached to the surface of the deformation piece; the driving member drives the mass block to reciprocate between the first surface and the second surface when the driving member is electrified; under the condition that the first piezoelectric structural member is electrified, the first piezoelectric structural member generates bending deformation and drives the deformation member to deform so as to drive the mass block to reciprocate between the first surface and the second surface. The technical scheme can solve the problem that the frequency bandwidth of the current vibration motor is relatively smaller.
Description
Technical Field
The application belongs to the technical field of communication equipment, and particularly relates to a vibration motor and electronic equipment.
Background
As technology advances, more and more technology is applied to electronic devices. For example, in order to improve the dustproof and waterproof performance of the electronic device, the physical key in the electronic device may be replaced by a virtual key, and by configuring the vibration motor, the pressing shock of the physical key can be still provided when the virtual key is pressed. Current vibration motors generally provide vibration sense by means of reciprocating motion of a mass block connected with a spring, but are limited by structural components of the vibration motor, the vibration motor can generate larger vibration amplitude only when the power supply frequency is matched with corresponding parameters of the vibration motor, and the power supply frequency is not in the range, so that the vibration amplitude of the vibration motor is smaller, the vibration sense is weaker, and the frequency bandwidth of the current vibration motor is relatively smaller.
Disclosure of Invention
An object of an embodiment of the present application is to provide a vibration motor and an electronic apparatus, so as to solve the problem that the bandwidth of the current vibration motor is relatively small.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, an embodiment of the present application discloses a vibration motor, which includes a housing, a mass, a deformation member, a first vibration assembly and a second vibration assembly, wherein opposite ends of the deformation member are fixed to the housing, and the deformation member is located between a first surface and a second surface which are oppositely disposed in the housing;
The first vibration assembly comprises a driving piece, wherein the driving piece is arranged on the shell and is matched with the mass block;
the second vibration component comprises a first piezoelectric structural member, the first piezoelectric structural member is attached to the surface of the deformation piece, the deformation piece is matched with the mass block, wherein,
The drive member driving the mass to reciprocate between the first surface and the second surface upon energization of the drive member; under the condition that the first piezoelectric structural member is electrified, the first piezoelectric structural member is switched between moving close to the first surface and moving away from the first surface, and the first piezoelectric structural member generates bending deformation and drives the deformation member to deform so as to drive the mass block to reciprocate between the first surface and the second surface.
In a second aspect, an embodiment of the present application discloses an electronic apparatus including the vibration motor described above.
The embodiment of the application provides a vibrating motor and electronic equipment, wherein the vibrating motor comprises a shell, a mass block, a first vibrating assembly, a second vibrating assembly and a deformation piece, wherein the mass block, the first vibrating assembly, the second vibrating assembly and the deformation piece are arranged in the shell, the first vibrating assembly and the second vibrating assembly are directly or indirectly connected with and matched with the mass block, the first vibrating assembly comprises a driving piece, the second vibrating assembly comprises a first piezoelectric structural piece, the first piezoelectric structural piece is attached to the deformation piece, and the driving piece and the first piezoelectric structural piece can drive the mass block to reciprocate between a first surface and a second surface which are opposite in the shell under the power-on state, so that the vibrating motor can provide a vibrating effect. In addition, the part used for driving the mass block to move in the second vibration assembly is a first piezoelectric structural part, the deformation frequency of the first piezoelectric structural part is related to the input frequency of electricity, and therefore the vibration frequency of the first piezoelectric structural part can be controlled by controlling the frequency of the current input to the first piezoelectric structural part, and the frequency bandwidth of the vibration motor can be enlarged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic view of a vibration motor according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a vibration motor according to an embodiment of the present application;
FIG. 3 is a schematic view of a part of the structure of a vibration motor according to an embodiment of the present application;
FIG. 4 is an exploded view of the structure shown in FIG. 3;
FIG. 5 is a schematic illustration of a second vibration assembly in an energized state in a vibration motor according to an embodiment of the present application;
FIG. 6 is another schematic diagram of a vibration motor with a second vibration assembly in an energized state according to an embodiment of the present application;
FIG. 7 is a schematic diagram illustrating a state of a first vibration assembly of the vibration motor according to the embodiment of the present application;
FIG. 8 is a schematic diagram illustrating another state of the vibration motor according to the embodiment of the present application when the first vibration assembly is operated;
FIG. 9 is a schematic diagram illustrating a second vibration assembly of the vibration motor according to an embodiment of the present application in operation;
Fig. 10 is a schematic diagram illustrating another state of the second vibration assembly in the vibration motor according to the embodiment of the present application.
Reference numerals illustrate:
100-a shell, 110-a first surface, 120-a second surface,
200-Mass block, 210-bonding surface, 220-avoiding surface,
300-First vibration assembly, 310-elastic member, 321-first magnet, 322-second magnet, 3221-iron core, 3222-coil, and,
400-Second vibration component, 410-first piezoelectric structural component, 420-second piezoelectric structural component, 430-adhesive layer,
510-Deformation member, 520-flexible circuit board, 530-wire.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that some, but not all embodiments of the application are described. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The folding mechanism and the electronic device provided by the embodiment of the application are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.
As shown in fig. 1 to 10, the embodiment of the present application discloses a vibration motor including a housing 100, a mass 200, a deformation member 510, a first vibration assembly 300, and a second vibration assembly 400, and an electronic device in which the vibration motor can be applied.
The casing 100 is an integral external structure of the vibration motor, which can provide a mounting base and a protection function for other components in the vibration motor, the casing 100 can be made of materials with relatively high structural strength such as plastic or metal, and the shape and the size of the casing 100 can be determined according to practical requirements, and are not limited herein. In addition, the whole housing 100 may be a split structure, and the housing 100 has an inner cavity to provide a receiving function for other components, and after the other components in the vibration motor are installed in the housing 100, the housing 100 may be formed into a complete structure by forming a fixed connection relationship between the components in the housing 100. More specifically, the housing 100 may include a housing body provided with an open cavity and a package plate, which is connected to the housing body by being mutually packaged, so that the open cavity forms a relatively closed cavity, and the packaging work of other components mounted in the housing 100 is completed.
The casing 100 has a first surface 110 and a second surface 120, where the first surface 110 and the second surface 120 are opposite, specifically, the first surface 110 and the second surface 120 may be two opposite surfaces in the inner surface of the casing 100, and the shapes and the dimensions of the two surfaces may be the same, so that the structure of the whole casing 100 is relatively regular, which is beneficial to processing and assembling, and the electronic device is easier to arrange the installation space of the vibration motor. More specifically, one of the first surface 110 and the second surface 120 may be located on the case body, and the other on the package board, with the first surface 110 and the second surface 120 being opposite.
The deformation member 510 has a deformation capability, and may be a plate-shaped structural member made of plastic or metal, so that the deformation member 510 has a relatively high structural strength and a relatively high deformation capability. The thickness and the like of the deformation member 510 may be determined according to practical requirements, and are not limited herein. The deformation member 510 may be bonded, welded or thermally welded, so that opposite ends of the deformation member 510 form a fixed connection with the housing 100, and the deformation member 510 is located between the first surface 110 and the second surface 120, thereby ensuring that the deformation member 510 does not interfere with the first surface 110 and the second surface 120 during the deformation process. As for the spacing between the deforming member 510 and the first surface 110 and the second surface 120, the spacing may be determined according to practical situations, which is not limited herein.
The mass 200 is a device for improving vibration effect in the vibration motor, and the mass 200 may be made of a material with relatively high density such as metal. More specifically, the mass 200 may be made of tungsten alloy to further ensure that the mass 200 provides better inertia. The specific shape, size, weight, etc. of the mass 200 can be flexibly determined according to the design requirements of the vibration motor, etc., and are not limited herein.
The first vibration assembly 300 and the second vibration assembly 400 are each devices capable of providing a vibration effect in a vibration motor. In order to ensure that both the first vibration component 300 and the second vibration component 400 can provide a good vibration effect, both the first vibration component 300 and the second vibration component 400 can be connected with the mass block 200, so that when either one of the first vibration component and the second vibration component works, both the first vibration component and the second vibration component can drive the mass block 200 to move, and the vibration effect is improved.
Specifically, as shown in fig. 2, the first vibration assembly 300 and the second vibration assembly 400 are sandwiched between the first surface 110 and the second surface 120. In order to enhance the overall vibration effect of the vibration motor, the first and second vibration assemblies 300 and 400 may be distributed in opposite directions of the first and second surfaces 110 and 120. In this case, the maximum vibration amplitude of both the first and second vibration assemblies 300 and 400 may be increased to enhance the vibration effect; in addition, under the condition of adopting the technical scheme, although the thickness of the vibration motor is increased, the length and width of the vibration motor can be relatively smaller, so that the layout design of the vibration motor in the electronic equipment is more facilitated. Meanwhile, in this embodiment, the mass 200 may be disposed between the first vibration assembly 300 and the second vibration assembly 400, and in order to ensure that the vibration motor can work normally, an elastic member may be disposed between two of the first vibration assembly 300, the mass 200 and the second vibration assembly 400, so as to ensure that the first vibration assembly 300 and the second vibration assembly 400 can both drive the mass 200 to move relative to the housing 100 normally.
More specifically, the axes of the first and second vibration assemblies 300 and 400 may be overlapped, in which case, when one of the first and second vibration assemblies 300 and 400 vibrates, the other may be prevented from being damaged by axial deflection when being deformed by the vibration, and the respective vibration effects of the first and second vibration assemblies 300 and 400 may be further improved. The axes of the components of the first vibration assembly 300 and the second vibration assembly 400 for providing the driving function can be overlapped, so that the purpose of overlapping the axes of the first vibration assembly 300 and the second vibration assembly 400 can be achieved.
In addition, in the case where the first vibration assembly 300 and the second vibration assembly 400 are distributed along the opposite direction of the first surface 110 and the second surface 120, the first vibration assembly 300 may be located on the side of the second vibration assembly 400 close to the first surface 110, or the first vibration assembly 300 may be located on the side of the second vibration assembly 400 close to the second surface 120, which is not limited herein. For ease of description, the first vibration assembly 300 is described herein as being positioned on a side of the second vibration assembly 400 adjacent to the first surface 110.
The first vibration assembly 300 includes a driving member, which may be mounted to the housing 100 by bonding or screw connection, etc., and is coupled to the mass 200. The driving member may be a linear motor or the like capable of providing a linear reciprocating motion, so that the driving member can drive the mass 200 to reciprocate between the first surface 110 and the second surface 120 when the driving member is energized, and thus the entire vibration motor can generate a vibration effect.
The second vibration assembly 400 includes a first piezoelectric structure 410, and the first piezoelectric structure 410 may be a piezoelectric ceramic. More specifically, the piezoelectric ceramic may be a barium titanate piezoelectric ceramic or a lead zirconate titanate piezoelectric ceramic. The first piezoelectric structural member 410 may be attached to the surface of the deforming member 510 by a connection manner of a connecting member, so that the deforming member 510 can deform along with the deformation of the first piezoelectric structural member 410. The deformation element 510 cooperates with the mass 200, in particular, the deformation element 510 may be directly connected with the mass 200, or other structural elements may be further disposed between the first piezoelectric structural element 410 and the mass 200, so as to indirectly connect the deformation element 510 and the mass 200 through the foregoing other structural elements, which can ensure that the deformation element 510 can drive the mass 200 to move during the deformation process.
The first piezoelectric structure 410 is capable of generating a motion when energized, and by changing the direction of the current flowing in the first piezoelectric structure 410, the first piezoelectric structure 410 can generate a motion in the opposite direction. Specifically, when the first piezoelectric structure 410 is energized, as shown in fig. 9 and fig. 10, since the first piezoelectric structure 410 and the deformation member 510 are attached to each other, the first piezoelectric structure 410 cannot expand from the center to the periphery and cannot contract from the periphery to the middle in the energized state, so that the first piezoelectric structure 410 can only undergo bending deformation, as shown in fig. 5 and fig. 6, when the directions of the currents flowing through the first piezoelectric structure 410 are different, the bending deformation directions of the first piezoelectric structure 410 are also different, and by changing the directions of the currents flowing through the first piezoelectric structure 410, the first piezoelectric structure 410 can be switched between two deformation states, that is, when the directions of the currents flowing through the first piezoelectric structure 410 are changed, the first piezoelectric structure 410 can be switched between two movement states of moving close to the first surface 110 and moving away from the first surface 110.
Further, since the first piezoelectric structural member 410 is attached to the deformation member 510, the deformation of the first piezoelectric structural member 410 can also deform the deformation member 510 correspondingly, and since the opposite ends of the deformation member 510 are fixed on the housing 100, the middle portion of the deformation member 510 can deform, and the deformed portion reciprocates between the first surface 110 and the second surface 120 relative to the housing 100, so as to drive the mass 200 connected to the deformation member 510 to reciprocate between the first surface 110 and the second surface 120, thereby ensuring that the second vibration assembly 400 can also generate a vibration effect on the whole vibration motor.
More specifically, the deformation direction of the first piezoelectric structural member 410 may be easily and repeatedly changed by applying an alternating current to the first piezoelectric structural member 410, so that the first piezoelectric structural member 410 may be switched between two deformation states, so as to drive the mass 200 to reciprocate through the deformation member 510. In addition, when currents with different frequencies are applied to the first piezoelectric structure 410, parameters such as the deformation amplitude and the frequency generated by the first piezoelectric structure 410 may be changed accordingly.
The embodiment of the application provides a vibration motor and electronic equipment, the vibration motor comprises a shell 100, a mass block 200, a first vibration assembly 300, a second vibration assembly 400 and a deformation piece 510, wherein the mass block 200, the first vibration assembly 300 and the second vibration assembly 400 are arranged in the shell 100, the first vibration assembly 300 and the second vibration assembly 400 are directly or indirectly connected and matched with the mass block 200, the first vibration assembly 300 comprises a driving piece, the second vibration assembly 400 comprises a first piezoelectric structural piece 410, the first piezoelectric structural piece 410 is arranged in a fit mode with the deformation piece 510, and the driving piece and the first piezoelectric structural piece 410 can drive the mass block 200 to reciprocate between a first surface 110 and a second surface 120 which are opposite in the shell 100 in an electrified state, so that the vibration motor can provide a vibration effect. Also, the component of the second vibration assembly 400 for driving the mass 200 to move is the first piezoelectric structure 410, and the frequency of deformation of the first piezoelectric structure 410 is related to the frequency of the input electricity, so that the vibration frequency of the first piezoelectric structure 410 can be controlled by controlling the frequency of the current input to the first piezoelectric structure 410, which can expand the frequency bandwidth of the vibration motor.
Further, as shown in fig. 2-6, the second vibration assembly 400 may further include a second piezoelectric structure 420, and the polarities of the first piezoelectric structure 410 and the second piezoelectric structure 420 are the same, where the first piezoelectric structure 410 is attached to a side of the deformation member 510 facing the first surface 110, and correspondingly, the second piezoelectric structure 420 is attached to a side of the deformation member 510 facing the second surface 120. Also, as described above, the first vibration assembly 300 may be disposed at a side of the second vibration assembly 400 close to the first surface 110, and the mass 200 may be located between the first vibration assembly 300 and the second vibration assembly 400, in which case the mass 200 may be fixed at a side of the first piezoelectric structure 410 facing the first surface 110.
Specifically, parameters such as materials, shapes, and dimensions of the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be made to be the same. Specifically, as shown in fig. 3, the projections of the first piezoelectric structural member 410 and the second piezoelectric structural member 420 in the opposite directions of the first surface 110 and the second surface 120 can be overlapped, which can reduce the difficulty of the spare parts of the second vibration assembly, and when the same current is applied to the first piezoelectric structural member 410 and the second piezoelectric structural member 420 under the condition that the parameters of the first piezoelectric structural member 410 and the second piezoelectric structural member 420 are the same, the vibration motor can be further ensured to have higher vibration stability and consistency.
More specifically, as shown in fig. 5 and 6, the purpose of making the polarities of the first piezoelectric structural member 410 and the second piezoelectric structural member 420 the same is achieved by making the first piezoelectric structural member 410 close to one end of the deformation member 510 and the second piezoelectric structural member 420 close to one end of the deformation member 510 and making the first piezoelectric structural member 410 deviate from one end of the deformation member 510 and the second piezoelectric structural member 420 deviate from one end of the deformation member 510 and making the polarities of the first piezoelectric structural member 410 and the second piezoelectric structural member 420 the same is achieved, so as to further ensure that the deformation directions of the first piezoelectric structural member 410 and the second piezoelectric structural member 420 located on two opposite sides of the deformation member 510 are the same, and further improve the deformation amount and the deformation stability of the deformation member 510 under the combined action of the two.
In the process of assembling the second vibration assembly 400, the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be installed on the deformation member 510 by means of connection members, and by making the three relatively regular structures, it may be ensured that the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be attached to the deformation member 510. The first piezoelectric structure 410 and the second piezoelectric structure 420 may be connected to a power source via electrical connectors such as a wire 530, respectively, and the polarities of the first piezoelectric structure 410 and the second piezoelectric structure 420 may be the same.
In another embodiment of the present application, the deformation member 510 is a metal structural member, in this case, the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be directly electrically connected to the deformation member 510, and by connecting the deformation member 510 to a power source, the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be simultaneously powered, which may reduce the difficulty of power connection between the first piezoelectric structural member 410 and the second piezoelectric structural member 420, and may ensure that the polarities of the first piezoelectric structural member 410 and the second piezoelectric structural member 420 are the same.
Specifically, the deforming member 510 may be a metal plate structure, and the housing 100 may also be a metal structure. In this case, the opposite ends of the deformation member 510 may be fixed to the housing 100 by welding, so as to reduce the connection difficulty of the two, and further improve the connection reliability between the deformation member 510 and the housing 100. The first piezoelectric structure 410 and the second piezoelectric structure 420 may be in electrical connection with the deformation member 510 by contacting. Of course, the reliability of the electrical connection relationship between the deformation member 510 and the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be improved by providing wires or metal contacts on two opposite sides of the deformation member 510.
Alternatively, in another embodiment of the present application, both the first piezoelectric structure 410 and the second piezoelectric structure 420 may be adhesively secured to the deformation 510. Specifically, as shown in fig. 4, the first piezoelectric structural member 410 and the deformation member 510 are connected by an adhesive layer 430, and the second piezoelectric structural member 420 and the deformation member 510 are also connected by the adhesive layer 430. Under the condition of adopting the technical scheme, the bonding effect between the first piezoelectric structural member 410 and the second piezoelectric structural member 420 and the deformation member 510 can be further improved, the reliability and stability of the deformation member 510 driven by the first piezoelectric structural member 410 and the second piezoelectric structural member 420 are ensured, the deformation amplitude of the deformation member 510 can be improved to a certain extent, and the vibration effect of the vibration motor is further improved.
In addition, as described above, in the case where the deformation member 510 is a conductive structural member, the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be electrically connected to the deformation member 510, and in this case, the first piezoelectric structural member 410 and the second piezoelectric structural member 420 may be adhesively fixed on opposite sides of the deformation member 510 by using conductive adhesive, so that while ensuring that the first piezoelectric structural member 410 and the second piezoelectric structural member 420 both form a reliable connection relationship with the deformation member 510, it may also be ensured that the first piezoelectric structural member 410 and the second piezoelectric structural member 420 both form an electrical connection relationship with the deformation member 510.
Alternatively, as shown in fig. 2, in the vibration motor disclosed in the embodiment of the present application, the opposite ends of the first piezoelectric structure member 410 may be spaced apart from the housing 100 along the distribution direction of the opposite ends of the deformation member 510. In this case, when the first piezoelectric structural member 410 is in the energized state and deforms, the first piezoelectric structural member 410 and the housing 100 can be prevented from interfering with each other as much as possible, so that the first piezoelectric structural member 410 can perform the deformation normally, and the operational reliability of the first piezoelectric structural member 410 is improved.
Specifically, the distance between the opposite ends of the first piezoelectric structure 410 and the corresponding sides of the housing 100 may be determined according to practical requirements, which is not limited herein. Of course, in order to make the first piezoelectric structure 410 have a stronger deformability, under the condition of ensuring that the first piezoelectric structure 410 and the housing 100 do not interfere with each other, the first piezoelectric structure 410 may be extended in a direction close to the side wall of the housing 100 as much as possible, so as to enlarge the size of the first piezoelectric structure 410 and improve the deformability of the first piezoelectric structure 410.
More specifically, as shown in fig. 2, the first piezoelectric structure 410 may be centrally disposed on the deformation member 510 in a distribution direction of opposite ends of the deformation member 510, so that the deformation of the first piezoelectric structure 410 acts on the middle portion of the deformation member 510 where the deformation is more likely to occur as much as possible, thereby further improving the deformability of the deformation member 510 and thus the vibration effect of the vibration motor.
As described above, the opposite ends of the deformation member 510 are both fixed on the housing 100, when the first piezoelectric structural member 410 is energized, the first piezoelectric structural member 410 can drive the deformation member 510 to deform together, and the deformation forms are specifically that the middle portions of the first piezoelectric structural member 410 and the deformation member 510 are mutually switched between two states of moving towards the first surface 110 and moving away from the first surface 110.
Alternatively, as shown in fig. 2, the first piezoelectric structure 410 is connected between the deforming member 510 and the mass 200, that is, the first piezoelectric structure 410 is located on the side of the deforming member 510 facing the first surface 110. In this case, the mass 200 is connected to the deformation 510 via a first piezoelectric structure 410. Based on this, as shown in fig. 2, the mass 200 may have the contact surface 210 and the relief surface 220, the contact surface 210 may be bonded to the first piezoelectric structure 410, and the contact surface 210 of the mass 200 may be fixedly connected to the surface of the first piezoelectric structure 410 by adhesion or the like. The avoidance surface 220 is connected to one side, away from the first piezoelectric structural member 410, of the bonding surface 210, and the avoidance surface 220 is a flaring surface, so that flaring of the avoidance surface 220 is away from the first piezoelectric structural member 410. Specifically, parameters such as the size of the relief surface 220 may be determined according to deformation design parameters of the first piezoelectric structural member 410, which is not limited herein.
Under the above technical solution, when the first piezoelectric structural member 410 generates bending deformation in a direction away from the first surface 110, as shown in fig. 7 and fig. 9, the avoiding surface 220 may provide a yielding space for the first piezoelectric structural member 410, so as to reduce the probability that the mass 200 interferes with the first piezoelectric structural member 410 to generate deformation as much as possible, improve the deformation capability of the first piezoelectric structural member 410, and further improve the vibration amplitude of the second vibration component.
As described above, the driving member may be a linear motor, and in another embodiment of the present application, the driving member includes a first magnet 321 and a second magnet 322, the first magnet 321 is fixedly connected with the mass 200, the second magnet 322 is mounted on the housing 100, and at least one of the first magnet 321 and the second magnet 322 is an electromagnet. That is, in this embodiment, the driving member drives the mass 200 in a reciprocating motion between the first surface 110 and the second surface 120 through a magnetic mating relationship. Specifically, by changing the direction of the current flowing into the electromagnet, the magnetic pole direction of the electromagnet can be changed, so that the first magnet 321 and the second magnet 322 can be respectively in a mutually attracted state and a mutually repelled state, and the first magnet 321 and the second magnet 322 can be circularly switched between a mutually close state and a mutually far state, so that the mass block 200 is driven to reciprocate between the first surface 110 and the second surface 120.
Specifically, the first magnet 321 and the mass block 200 may be fixed to each other by bonding or the like, and the first magnet 321 may be a permanent magnet, the second magnet 322 may be an electromagnet, the second magnet 322 includes an iron core 3221 and a coil 3222, the coil 3222 is wound on the iron core 3221, and the coil 3222 may be connected to a power supply through the flexible circuit board 520 to supply power to the flexible circuit board 520 through the power supply. Under the above conditions, the driving piece not only can have a driving function, but also can have a relatively low complexity of the whole structure; in addition, in the case that the driving element adopts the above technical solution, the first magnet 321 and the second magnet 322 may have an initial distance, so that the first magnet 321 and the second magnet 322 do not interfere with each other in the process that the first piezoelectric structural element 410 drives the mass 200 to reciprocate. In the above-mentioned case, even if the vibration motor is not provided with the elastic member or other devices, the vibration motor can be ensured to work normally. In addition, in the case that the driving member adopts a magnetic driving manner, the driving direction of the driving member can be easily changed by applying an alternating current to the driving member, so that the driving member can drive the mass 200 to reciprocate between the first surface 110 and the second surface 120.
Optionally, a limiting structure is arranged outside the first magnet 321 and the second magnet 322, so that the movement track of the second magnet 322 is limited by the limiting structure, and the first magnet 321 and the second magnet 322 can be always in stable matching relation. In another embodiment of the present application, as shown in fig. 2, the first vibration assembly 300 may further include an elastic member 310, one end of the elastic member 310 is fixed to the first magnet 321, the other end of the elastic member 310 is fixed to the second magnet 322, and the elastic member 310 is in a stretched state or a compressed state when the driving member is energized.
That is, the first magnet 321 and the second magnet 322 are connected to each other by the elastic member 310, and the elastic member 310 can provide a restriction effect on the movement process of the second magnet 322 on the one hand and can prevent an excessively large or excessively small space between the first magnet 321 and the second magnet 322 on the other hand. In addition, in the case where the frequency of movement between the first magnet 321 and the second magnet 322 is the same as or similar to the natural frequency of the elastic member 310, the vibration amplitude of the first vibration assembly 300 is maximized. In the use process of the vibration motor, the frequency of the current required to be fed into the second vibration assembly 400 can be determined according to the frequency parameter that the frequency of the fed current meets half of the maximum amplitude of the first vibration assembly 300, so that the frequency width of the corresponding current when the vibration motor can be in a larger amplitude state is further enlarged, and the user experience of the vibration motor is improved.
Based on the vibration motor provided by any one of the embodiments, the embodiment of the present application further provides an electronic device, where the electronic device includes any one of the vibration motors, and of course, the electronic device further includes a main board, a display screen, a battery, and other devices, and the text is considered to be concise and will not be described in detail here.
The electronic equipment disclosed by the embodiment of the application can be a mobile phone, a computer, an electronic book reader, a wearable device and the like, and the embodiment of the application is not limited to the specific type of the electronic equipment.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (10)
1. The vibrating motor is characterized by comprising a shell, a mass block, a deformation piece, a first vibrating assembly and a second vibrating assembly, wherein two opposite ends of the deformation piece are fixed on the shell, and the deformation piece is positioned between a first surface and a second surface which are oppositely arranged in the shell;
The first vibration assembly comprises a driving piece, wherein the driving piece is arranged on the shell and is matched with the mass block;
the second vibration component comprises a first piezoelectric structural member, the first piezoelectric structural member is attached to the surface of the deformation piece, the deformation piece is matched with the mass block, wherein,
The drive member driving the mass to reciprocate between the first surface and the second surface upon energization of the drive member; under the condition that the first piezoelectric structural member is electrified, the first piezoelectric structural member is switched between moving close to the first surface and moving away from the first surface, and the first piezoelectric structural member generates bending deformation and drives the deformation member to deform so as to drive the mass block to reciprocate between the first surface and the second surface.
2. The vibration motor of claim 1, wherein the second vibration assembly further comprises a second piezoelectric structure, the polarities of the first piezoelectric structure and the second piezoelectric structure are the same, the first piezoelectric structure is attached to a side of the deformation facing the first surface, the first piezoelectric structure is fixedly connected with the mass, and the second piezoelectric structure is attached to a side of the deformation facing the second surface.
3. The vibration motor of claim 2, wherein the deformation is a metallic structural member, the first piezoelectric structural member and the second piezoelectric structural member are each electrically connected to the deformation, and the deformation is configured to be connected to a power source.
4. The vibration motor of claim 2, wherein projections of the first and second piezoelectric structures in opposite directions of the first and second surfaces coincide.
5. The vibration motor of claim 2, wherein the first piezoelectric structure and the second piezoelectric structure are both adhesively secured to the deformation member.
6. The vibration motor of claim 1, wherein the opposite ends of the first piezoelectric structure are spaced apart from the housing along a direction of distribution of the opposite ends of the deformation.
7. The vibration motor of claim 1, wherein the first piezoelectric structure is connected between the deformation member and the mass, the mass has a bonding surface and a relief surface, the bonding surface is bonded to the first piezoelectric structure, the relief surface is connected to a side of the bonding surface facing away from the first piezoelectric structure, the relief surface is a flaring surface, and the flaring of the relief surface faces away from the first piezoelectric structure.
8. The vibration motor of claim 1, wherein the driver comprises a first magnet fixedly connected to the mass and a second magnet mounted to the housing, at least one of the first magnet and the second magnet being an electromagnet.
9. The vibration motor of claim 8, wherein the first vibration assembly further comprises an elastic member, one end of the elastic member being fixed to the first magnet, the other end of the elastic member being fixed to the second magnet;
the elastic member is in a stretched state or a compressed state when the driving member is energized.
10. An electronic device comprising the vibration motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532126.3A CN113258821B (en) | 2021-05-17 | 2021-05-17 | Vibration motor and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532126.3A CN113258821B (en) | 2021-05-17 | 2021-05-17 | Vibration motor and electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113258821A CN113258821A (en) | 2021-08-13 |
| CN113258821B true CN113258821B (en) | 2024-05-03 |
Family
ID=77182130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110532126.3A Active CN113258821B (en) | 2021-05-17 | 2021-05-17 | Vibration motor and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113258821B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110039841A (en) * | 2009-10-12 | 2011-04-20 | 삼성전기주식회사 | Touch expression device |
| CN103151958A (en) * | 2011-12-06 | 2013-06-12 | 精工爱普生株式会社 | Piezoelectric motor, driving device, electronic component conveying device, and electronic component inspection device |
| KR20140085268A (en) * | 2012-12-27 | 2014-07-07 | (주)테라다인 | Piezo Actuator |
| KR20140095394A (en) * | 2013-01-24 | 2014-08-01 | (주)테라다인 | Piezo Actuator |
| JP2017094317A (en) * | 2015-11-20 | 2017-06-01 | エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． | Vibration motor |
| CN111224577A (en) * | 2020-02-25 | 2020-06-02 | Oppo广东移动通信有限公司 | Motor and electronic apparatus |
| CN211405827U (en) * | 2020-03-20 | 2020-09-01 | 昆山联滔电子有限公司 | Vibration motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7492076B2 (en) * | 2006-12-29 | 2009-02-17 | Artificial Muscle, Inc. | Electroactive polymer transducers biased for increased output |
| KR101412919B1 (en) * | 2012-08-23 | 2014-07-03 | 삼성전기주식회사 | vibratior |
-
2021
- 2021-05-17 CN CN202110532126.3A patent/CN113258821B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110039841A (en) * | 2009-10-12 | 2011-04-20 | 삼성전기주식회사 | Touch expression device |
| CN103151958A (en) * | 2011-12-06 | 2013-06-12 | 精工爱普生株式会社 | Piezoelectric motor, driving device, electronic component conveying device, and electronic component inspection device |
| KR20140085268A (en) * | 2012-12-27 | 2014-07-07 | (주)테라다인 | Piezo Actuator |
| KR20140095394A (en) * | 2013-01-24 | 2014-08-01 | (주)테라다인 | Piezo Actuator |
| JP2017094317A (en) * | 2015-11-20 | 2017-06-01 | エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． | Vibration motor |
| CN111224577A (en) * | 2020-02-25 | 2020-06-02 | Oppo广东移动通信有限公司 | Motor and electronic apparatus |
| CN211405827U (en) * | 2020-03-20 | 2020-09-01 | 昆山联滔电子有限公司 | Vibration motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113258821A (en) | 2021-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7116293B2 (en) | Vibration actuators and portable devices | |
| US10886828B2 (en) | Vibration actuator and portable device | |
| JP6955158B2 (en) | Vibration actuators and mobile devices | |
| US10610892B2 (en) | Vibration actuator and portable device | |
| CN107710572B (en) | Linear vibration motor | |
| KR101148530B1 (en) | Linear Vibrator | |
| KR102202568B1 (en) | Vibration generating devices and electronic devices | |
| US20180229270A1 (en) | Linear vibration motor | |
| WO2022242537A1 (en) | Vibration motor and electronic device | |
| CN110994933A (en) | Linear vibration motor with four permanent magnet structures and damping structure | |
| US20200067393A1 (en) | Actuator and electronic device | |
| CN107847976B (en) | Linear vibration motor and mobile electronic device including the same | |
| CN211830531U (en) | Linear vibration motor and electronic apparatus | |
| CN107196483B (en) | Vibration motor | |
| CN113258821B (en) | Vibration motor and electronic device | |
| CN107534376B (en) | Linear vibration motor | |
| US20200067394A1 (en) | Actuator and electronic device | |
| JP4643316B2 (en) | Micromachine switch and driving method thereof | |
| CN115250047A (en) | Actuator | |
| CN113258822A (en) | Vibration motor and electronic device | |
| JP2020121277A (en) | Actuator and electronic apparatus | |
| CN107040112B (en) | Vibration motor | |
| CN211429169U (en) | Linear vibration motor with four permanent magnet structures | |
| CN211429167U (en) | Linear vibration motor with four permanent magnet structures and damping structure | |
| CN107040113B (en) | Vibration motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |