WO2022242537A1

WO2022242537A1 - Vibration motor and electronic device

Info

Publication number: WO2022242537A1
Application number: PCT/CN2022/092411
Authority: WO
Inventors: 陈旭; 蔡程; 周瑜
Original assignee: 维沃移动通信有限公司
Priority date: 2021-05-17
Filing date: 2022-05-12
Publication date: 2022-11-24
Also published as: CN113258823A

Abstract

Disclosed in the present application are a vibration motor and an electronic device, belonging to the field of communication devices. The vibration motor comprises a housing, a mass block, a first vibration assembly and a second vibration assembly, wherein the first vibration assembly and the second vibration assembly are clamped between a first surface and a second surface which are arranged opposite each other in the housing; the first vibration assembly comprises a driving member, and the driving member is mounted on the housing and matches the mass block; the second vibration assembly comprises a piezoelectric structural member, and the piezoelectric structural member is connected to the housing and the mass block; under the condition that the driving member is powered on, the driving member drives the mass block to reciprocate between the first surface and the second surface; and under the condition that the piezoelectric structural member is powered on, the piezoelectric structural member deforms and drives the mass block to reciprocate between the first surface and the second surface.

Description

Vibration motors and electronic equipment

cross reference

The present invention claims the priority of the Chinese patent application submitted to the China Patent Office on May 17, 2021, with the application number 202110532292.3 and the title of the invention "vibration motor and electronic equipment". The entire content of this application is incorporated by reference in the present invention .

technical field

The application belongs to the technical field of communication equipment, and in particular relates to a vibration motor and electronic equipment.

Background technique

With the development of technology, more and more technologies are applied to electronic devices. For example, in order to improve the dustproof and waterproof performance of the electronic device, the physical buttons in the electronic device can be replaced with virtual buttons, and a vibration motor can be configured so that when the virtual button is pressed, it can still have the pressing vibration of the physical button. Current vibrating motors usually provide shock sensation by means of reciprocating motion of mass blocks connected with springs. However, limited by the structural components of this vibrating motor, only when the power supply frequency matches the corresponding parameters of the vibrating motor, can the vibrating motor Only when a larger amplitude can be generated, but the power supply frequency is not within the aforementioned range, the vibration amplitude of the vibration motor is relatively small, and the shock feeling is weak. Therefore, the frequency bandwidth of the current vibration motor is relatively small.

Contents of the invention

The purpose of the embodiments of the present application is to provide a vibrating motor and an electronic device to solve the problem that the frequency bandwidth of the current vibrating motor is relatively small.

In order to solve the above-mentioned technical problems, the application is implemented as follows:

In the first aspect, the embodiment of the present application discloses a vibrating motor, which includes a housing, a mass, a first vibrating component and a second vibrating component, the first vibrating component and the second vibrating component are sandwiched between the between opposing first and second surfaces of the housing;

The first vibrating assembly includes a driver, the driver is mounted on the housing, and the driver cooperates with the mass block;

The second vibration component includes a piezoelectric structural member, and the piezoelectric structural member is connected to both the housing and the mass block;

When the driving member is energized, the driving member drives the mass to reciprocate between the first surface and the second surface; when the piezoelectric structural member is energized, the The piezoelectric structural member deforms and drives the mass to reciprocate between the first surface and the second surface.

In a second aspect, an embodiment of the present application provides an electronic device, which includes the vibration motor described above.

Embodiments of the present application provide a vibration motor and electronic equipment. The vibration motor includes a casing, a mass block installed in the casing, a first vibration assembly and a second vibration assembly, and both the first vibration assembly and the second vibration assembly are connected to the mass The blocks are connected and matched, the first vibrating component includes a driving part, and the second vibrating component includes a piezoelectric structural part, and both the driving part and the piezoelectric structural part can drive the opposite first surface and the second opposite surface of the mass block in the casing in the energized state. The reciprocating motion is performed between the two surfaces, so that the vibrating motor can provide the vibrating effect. Moreover, the part used to drive the movement of the mass in the second vibrating assembly is a piezoelectric structural member, and the frequency of the piezoelectric structural member’s stretching and deformation is related to the frequency of the input electricity, and then it can be controlled by controlling the frequency of power transmission to the piezoelectric structural member. , to control the vibration frequency of the piezoelectric structural member, which can expand the frequency bandwidth of the vibration motor.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic structural diagram of a vibration motor disclosed in an embodiment of the present application;

2 is a schematic cross-sectional view of a vibration motor disclosed in an embodiment of the present application;

Fig. 3 is a schematic diagram of part of the structure of the vibration motor disclosed in the embodiment of the present application;

Fig. 4 is a schematic view of the structure shown in Fig. 3 in another direction;

Fig. 5 is a schematic diagram of a working state of the first vibrating component in the vibrating motor disclosed in the embodiment of the present application;

Fig. 6 is a schematic diagram of another state when the first vibration component in the vibration motor disclosed in the embodiment of the present application is working;

Fig. 7 is a schematic diagram of a working state of the second vibrating component in the vibrating motor disclosed in the embodiment of the present application;

Fig. 8 is a schematic diagram of another working state of the second vibrating assembly in the vibrating motor disclosed in the embodiment of the present application.

Explanation of reference signs:

100-shell, 110-first surface, 120-second surface,

200-mass block,

300-first vibration component, 310-elastic member, 321-first magnet, 322-second magnet, 3221-iron core, 3222-coil,

400-second vibration component, 410-piezoelectric structure, 420-shrapnel, 421-connection section, 422-deformation section, 423-installation section, 430-gasket,

510-storage and power supply module, 520-flexible circuit board.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," etc. distinguish Objects are generally of one type, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

The folding mechanism and the electronic device provided by the embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

As shown in Figures 1 to 8, the embodiment of the present application discloses a vibration motor and an electronic device. The vibration motor includes a housing 100, a mass 200, a first vibration assembly 300 and a second vibration assembly 400. The vibration motor can be used in in electronic equipment.

Wherein, the housing 100 is the overall external structure of the vibration motor, which can provide an installation basis and protection for other components in the vibration motor. The housing 100 can be made of materials with relatively high structural strength such as plastic or metal. The shape and size of 100 can be determined according to actual needs, and are not limited here. In addition, the entire housing 100 can be a split structure, and the housing 100 has an inner cavity to provide accommodation for other components, and after the other components in the vibration motor are installed in the housing 100, by making the housing 100 Forming a fixed connection relationship among the components makes the casing 100 form a complete structure. More specifically, the housing 100 may include a housing body and a packaging board, the housing body is provided with an open cavity, and the packaging board is packaged and connected with the housing body so that the open cavity can form a relatively closed cavity, and The encapsulation of other components installed in the casing 100 is completed.

The casing 100 has a first surface 110 and a second surface 120, and the first surface 110 and the second surface 120 are oppositely disposed. The shapes and sizes of the two surfaces can be correspondingly the same, so that the structure of the entire casing 100 is relatively regular, which facilitates processing and assembly, and makes it easier for electronic equipment 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 housing body, the other is located on the package board, and the first surface 110 and the second surface 120 are opposite.

The mass block 200 is a device used in the vibration motor to enhance the vibration effect, and the mass block 200 can be made of relatively high-density materials such as metal. More specifically, the mass block 200 can be made of tungsten alloy to further ensure that the mass block 200 can provide better inertial effect. Parameters such as the specific shape, size and weight of the mass block 200 can be flexibly determined according to the design requirements of the vibration motor, and are not limited here.

Both the first vibrating component 300 and the second vibrating component 400 are devices capable of providing vibration in the vibrating motor. In order to ensure that both can provide better vibration effects, both the first vibrating assembly 300 and the second vibrating assembly 400 can be connected to the mass block 200, so that when either one of the two is working, it can drive the mass block 200 Movement, enhance the vibration effect.

The first vibration component 300 and the second vibration component 400 are interposed between the first surface 110 and the second surface 120 . Optionally, the first vibrating components 300 and the second vibrating components 400 may be distributed along a direction perpendicular to the relative direction of the first surface 110 and the second surface 120 .

In order to improve the overall vibration effect of the vibration motor, the first vibration components 300 and the second vibration components 400 may be distributed along the relative direction of the first surface 110 and the second surface 120 . In this case, the maximum vibration amplitude of both the first vibrating component 300 and the second vibrating component 400 can be increased to enhance the vibrating effect; thickness, but can reduce the length and width of the vibration motor, which is more conducive to the layout design of the vibration motor in electronic equipment. At the same time, in this embodiment, the mass block 200 can be arranged between the first vibrating assembly 300 and the second vibrating assembly 400, and in order to ensure that the vibration motor can work normally, the first vibrating assembly 300, the mass block 200 and the second vibrating assembly can be arranged An elastic member is arranged between the two vibrating components 400 to ensure that both the first vibrating component 300 and the second vibrating component 400 can normally drive the mass block 200 to move relative to the casing 100 .

More specifically, the axes of the first vibrating assembly 300 and the second vibrating assembly 400 can be coincident, in this case, it can be prevented that when one of the first vibrating assembly 300 and the second vibrating assembly 400 vibrates, the other The vibration effect of the first vibrating component 300 and the second vibrating component 400 can be further improved due to axial deflection and damage when deformed by vibration. Specifically, the axes of the components used to provide the driving function in the first vibrating assembly 300 and the second vibrating assembly 400 can be coincident to achieve the purpose of coincident axes of the first vibrating assembly 300 and the second vibrating assembly 400 .

Moreover, when the first vibrating component 300 and the second vibrating component 400 are distributed along the relative direction of the first surface 110 and the second surface 120 , the first vibrating component 300 can be located near the first surface 110 of the second vibrating component 400 On one side, the first vibrating component 300 may also be located on the side of the second vibrating component 400 close to the second surface 120 , which is not limited herein. In order to facilitate the development of the following, it will be described herein as an example that the first vibrating component 300 is located on a side of the second vibrating component 400 close to the first surface 110 .

Wherein, the first vibrating assembly 300 includes a driving part, which can be mounted on the casing 100 by means of bonding or screw connection, and the driving part cooperates with the mass block 200 . The driving part can be a device capable of providing linear reciprocating motion, such as a linear motor, so that when the driving part is energized, the driving part can drive the mass 200 to reciprocate between the first surface 110 and the second surface 120, thereby making the entire The vibrating motor produces a vibrating effect.

The second vibrating component 400 includes a piezoelectric structural member 410, and the piezoelectric structural member 410 may specifically be piezoelectric ceramics. More specifically, the piezoelectric ceramics may be barium titanate piezoelectric ceramics or lead zirconate titanate piezoelectric ceramics. Through bonding and other methods, the piezoelectric structural member 410 can be directly connected to the mass block 200, or other structural members can be arranged between the piezoelectric structural member 410 and the mass block 200 to indirectly The piezoelectric structure 410 and the proof mass 200 are connected to ground. The piezoelectric structural member 410 can produce movement when it is energized, and by changing the direction of the current flowing into the piezoelectric structural member 410, the piezoelectric structural member 410 can produce a movement in the opposite direction. When the component 410 is energized, the deformation of the piezoelectric structural component 410 can drive the mass block 200 to reciprocate between the first surface 110 and the second surface 120, ensuring that the second vibrating component 400 can also cause the entire vibrating motor to produce a vibrating effect .

More specifically, the direction of motion of the piezoelectric structural member 410 can be changed repeatedly by passing alternating current to the piezoelectric structural member 410, so that the piezoelectric structural member 410 can switch between two deformation states to drive the mass 200 do reciprocating motion. In addition, when currents of different frequencies are passed through the piezoelectric structural member 410, parameters such as the amplitude and frequency of motion generated by the piezoelectric structural member 410 can also be changed accordingly.

Embodiments of the present application provide a vibration motor and electronic equipment. The vibration motor includes a casing 100 and a mass block 200 installed in the casing 100, a first vibration assembly 300 and a second vibration assembly 400, and the first vibration assembly 300 and the second vibration assembly The two vibrating components 400 are connected and matched with the mass block 200. The first vibrating component 300 includes a driving member, and the second vibrating component 400 includes a piezoelectric structural member 410. Both the driving member and the piezoelectric structural member 410 can drive the mass in an electrified state. The block 200 reciprocates between the opposing first surface 110 and the second surface 120 in the housing 100 so that the vibration motor can provide a vibration effect. Moreover, the part used to drive the movement of the mass 200 in the second vibrating assembly 400 is the piezoelectric structural member 410. The frequency of the piezoelectric structural member 410’s stretching and deformation is related to the frequency of the input electricity, and then it can be controlled to the piezoelectric structure. The frequency of the current input to the component 410 controls the vibration frequency of the piezoelectric structural component 410, which can expand the frequency bandwidth of the vibration motor.

As mentioned above, the piezoelectric structural member 410 can be directly connected to the proof mass 200 by bonding or other methods. , directly connect the piezoelectric structural member 410 to the second surface 120 .

In another embodiment of the present application, the second vibrating assembly 400 further includes an elastic piece 420, which is a flaring-shaped structural member. More figuratively, the shrapnel 420 may be a cymbal-shaped structural member. The flaring section of the shrapnel 420 is provided with a first fitting surface, and the end of the shrapnel 420 away from the flaring section is provided with a second fitting surface, in order to reduce the limiting effect of the connection relationship on the deformation of the piezoelectric structural member 410, and improve the piezoelectric structure. The deformation performance of the structural member 410, as shown in FIG. 2 , an elastic piece 420 is provided between the second surface 120 of the housing 100 and the piezoelectric structural member 410, so that during the deformation process of the piezoelectric structural member 410, the elastic piece 420 produces The deformation amount increases the deformation range of the piezoelectric structural member 410, thereby increasing the vibration amplitude of the second vibration component 400 and improving the vibration effect of the vibration motor.

Moreover, in order to ensure that a relatively stable connection effect can be formed between the piezoelectric structural member 410 and the elastic piece 420, and between the elastic piece 420 and the second surface 120, as shown in FIG. 2 , the first bonding surface of the elastic piece 420 can be It is bonded to the piezoelectric structural member 410 , and the second bonding surface of the elastic piece 420 is bonded to the second surface 120 of the casing 100 . In this case, the connection area between the piezoelectric structural member 410 and the elastic piece 420 and between the elastic piece 420 and the second surface 120 can be increased, and the connection between the elastic piece 420 and the housing 100 and the piezoelectric structural member 410 can be improved. relationship reliability. Of course, the elastic piece 420, the piezoelectric structural member 410 and the housing 100 can also be connected to each other by bonding, so as to ensure a high connection reliability between the piezoelectric structural member 410, the housing 100 and the elastic piece 420 At the same time, it reduces the difficulty of connection between components.

In addition, by connecting the first end surface of the elastic piece 420 at the flaring end to the piezoelectric structural member 410, the deformation in a larger range on the piezoelectric structural member 410 can be transmitted to the elastic piece 420, thereby enlarging the maximum deformation of the elastic piece 420 amount to further increase the vibration amplitude of the second vibrating component 400 .

Specifically, the side of the elastic sheet 420 can be a conical side-shaped structure. In order to further improve the vibration capability of the piezoelectric structural member 410, the elastic sheet 420 can be a strip-shaped structural member as a whole, and the middle part of the elastic sheet 420 is arched to form a flared structure. . Moreover, in the process of installing the elastic piece 420, only opposite ends of the elastic piece 420 can be connected to the piezoelectric structural member 410, which can further reduce the impact on the piezoelectric structural member 410 caused by the connection relationship between the elastic piece 420 and the piezoelectric structural member 410. The limiting effect of the deformability.

Based on the above-mentioned embodiment, further, as shown in FIG. 2 , the above-mentioned elastic piece 420 can also be arranged between the mass block 200 and the piezoelectric structural member 410, and the first bonding surface of the elastic piece 420 and the piezoelectric structural member 410 Bonding, so that the second bonding surface of the elastic piece 420 is bonded to the mass block 200, thereby reducing the restriction effect of the connection relationship between the mass block 200 and the piezoelectric structural member 410 on the deformation ability of the piezoelectric structural member 410, and further improving The deformation ability of the piezoelectric structural member 410, and with the help of the shrapnel 420 on the opposite sides of the piezoelectric structural member 410, the deformation of the piezoelectric structural member 410 is maximized, and the vibration amplitude of the second vibration component 400 is increased, thereby improving the vibration The vibration effect of the motor.

Specifically, the structure and size of the shrapnel 420 disposed on opposite sides of the piezoelectric structural member 410 can be flexibly determined according to parameters such as the size and shape of the piezoelectric structural member 410 and the proof mass 200 . Optionally, as shown in FIGS. 2-4 , the shapes of the elastic pieces 420 can be made the same, and the relative positions between the elastic pieces 420 and the piezoelectric structural member 410 can be the same or substantially similar, which can make the elastic pieces 420 The positions of the constraints on the piezoelectric structural member 410 caused by the connection with the piezoelectric structural member 410 are the same or substantially similar, thereby further reducing the magnitude of the drop in deformation ability of the piezoelectric structural member 410 due to the interconnection with each elastic piece 420 .

Furthermore, as shown in FIG. 2 , the projections of the elastic pieces 420 in the aforementioned relative directions can all be located on the piezoelectric structural member 410 . That is to say, the first bonding surface of the elastic piece 420 is completely connected to the piezoelectric structural member 410, which can further improve the stability of the connection relationship between the elastic piece 420 and the piezoelectric structural member 410, which can also further improve the stability of the elastic piece 420. The maximum deformation capacity when the piezoelectric structural member 410 is deformed. Certainly, in order to maximize the deformation of the piezoelectric structural member 410 to be transmitted to the elastic piece 420 , the opposite ends of the elastic piece 420 may be as close as possible to the opposite ends of the piezoelectric structural member 410 .

Further, as shown in FIG. 3 and FIG. 4 , a gasket 430 may also be provided between the elastic piece 420 and the piezoelectric structural member 410, the elastic piece 420 is connected to the piezoelectric structural member 410 through the gasket 430, and the gasket 430 has a certain degree of Therefore, when the piezoelectric structural member 410 is deformed, the restriction effect of the connection relationship between the piezoelectric structural member 410 and the elastic piece 420 on the deformation of the piezoelectric structural member 410 can be further relieved. The spacer 430 can be made of materials such as rubber, and the spacer 430 can be connected to the elastic piece 420 and the piezoelectric structural member 410 by bonding or the like.

As mentioned above, in order to improve the elastic capacity of the elastic piece 420, the elastic piece 420 can be a bar-shaped structural member, as shown in Figure 3 and Figure 4, the elastic piece 420 can include a connecting section 421, a deformation section 422 and an installation section 423, wherein the connecting section Both opposite ends of 421 are connected with deformation sections 422, and the ends of each deformation section 422 away from the connection section 421 are connected with installation sections 423, the installation sections 423 have a first fitting surface, and the connection section 421 has a second fitting surface, That is, the elastic piece 420 is connected to the piezoelectric structural member 410 through the installation section 423 , and is connected to the housing 100 (or the proof mass 200 ) through the connection section 421 .

In order to ensure that the elastic piece 420 has elasticity, as shown in FIG. 4 , the deformation section 422 is arranged obliquely relative to the piezoelectric structural member 410, or in other words, the deformation section 422 is arranged obliquely relative to the first bonding surface and the second bonding surface, so that The deformation section 422 can be elastically deformed relative to the connection section 421 (and the installation section 423 ), so that the entire elastic piece 420 has the ability to deform.

Wherein, as shown in Figures 7 and 8, when the piezoelectric structural member 410 is energized, the piezoelectric structural member 410 deforms to drive the shrapnel 420 to deform, specifically the deformed section 422 is deformed, and the piezoelectric structural member 410 and the deformation During the deformation process of the segment 422, the size of the two along the distribution direction of the opposite ends of the connecting segment 421 is reciprocally switched between increasing and decreasing. The size of the reciprocating switch between decreasing and increasing, so that the piezoelectric structural member 410 and the elastic piece 420 can drive the mass block 200 to reciprocate between the first surface 110 and the second surface 120 .

As mentioned above, when one of the first vibrating assembly 300 and the second vibrating assembly 400 is working, it can drive the mass block 200 to vibrate, and since both the first vibrating assembly 300 and the second vibrating assembly 400 are connected to the mass block 200 , which in turn can drive the other to vibrate. In this case, further, as shown in FIG. 2 , the vibration motor can also include a storage and power supply module 510, which can store and supply electric energy. The storage and power supply module 510 can specifically be a lithium battery, and in When the vibration motor is applied to an electronic device, the power storage module 510 may be (at least a part of) a battery of the electronic device. The power storage module 510 is electrically connected to the driver and the piezoelectric structure 410 , so that both the driver and the piezoelectric structure 410 can interact with the power storage module 510 . Specifically, the driving member and the piezoelectric structural member 410 may be electrically connected to the storage and power supply module 510 through cables.

To expand, as shown in FIG. 5 and FIG. 6 , when the driving member is energized, the driving member can drive the mass 200 to move between the first surface 110 and the second surface 120 . As mentioned above, the second vibrating component 400 can also vibrate between the first surface 110 and the second surface 120 with the driving element, so that the piezoelectric structure 410 can generate charges under the action of its own characteristics. When the piezoelectric structure 410 is connected to the power storage module 510 , the electric energy generated by the piezoelectric structure 410 can be transmitted and stored in the power storage module 510 . On this basis, the electric energy stored in the power storage module 510 can be output to the driver to provide at least a part of the required electric energy for the driver, which enables the electric energy in the vibration motor to be recycled and reused to reduce vibration The overall energy consumption of the motor can improve the battery life of the electronic device when the vibration motor is applied to the electronic device.

As mentioned above, the driving part can be a linear motor. In another embodiment of the present application, the driving part includes a first magnet 321 and a second magnet 322. The first magnet 321 is fixedly connected to the proof mass 200, and the second magnet 322 is installed On the housing 100, at least one of the first magnet 321 and the second magnet 322 is an electromagnet. That is to say, in this embodiment, the driving element drives the mass 200 to reciprocate between the first surface 110 and the second surface 120 through a magnetic cooperation relationship. Specifically, by changing the direction of the current passing through the electromagnet, the direction of the magnetic poles of the electromagnet can be changed, so that the first magnet 321 and the second magnet 322 can be in the state of mutual attraction and mutual repulsion respectively, and then the first magnet 321 and the second magnet 322 can be cyclically switched between two states of being close to each other and being far away from each other, driving the proof mass 200 to reciprocate between the first surface 110 and the second surface 120 .

Specifically, the first magnet 321 and the mass block 200 can be fixed to each other by bonding or the like, and the first magnet 321 can be a permanent magnet, and the second magnet 322 can be an electromagnet, and the second magnet 322 includes an iron core 3221 And the coil 3222, the coil 3222 is wound on the iron core 3221, and the coil 3222 can be connected to the power supply through the flexible circuit board 520, so as to supply power to the flexible circuit board 520 through the power supply. Under the above circumstances, both the driver can have the driving function, and the overall structure of the driver can be relatively low in complexity; and, when the driver adopts the above technical solution, the first magnet 321 and the second The magnets 322 are provided with an initial distance, so that the first magnet 321 and the second magnet 322 will not interfere with each other when the piezoelectric structural member 410 drives the mass block 200 to reciprocate. Under the above circumstances, even if components such as elastic members are no longer provided in the vibration motor, the normal operation of the vibration motor can be guaranteed. In addition, in the case that the driving part adopts a magnetic driving method, the driving direction of the driving part can be easily changed by passing an alternating current to the driving part, so that the driving part can drive the mass block 200 on the first surface 110 and the second surface 110 . There is a reciprocating motion between the surfaces 120 .

Optionally, by setting a limit structure outside the first magnet 321 and the second magnet 322, the movement track of the second magnet 322 is limited by the limit structure, so as to ensure that the first magnet 321 and the second magnet 322 can always form a stable cooperative relationship. In another embodiment of the present application, as shown in FIG. 2 , the first vibrating component 300 may further include an elastic member 310, one end of the elastic member 310 is fixed to the first magnet 321, and the other end of the elastic member 310 is connected to the second magnet. 322 is fixed, and the elastic member 310 is in a stretched state or a compressed state when the driving member is energized.

That is to say, the first magnet 321 and the second magnet 322 are connected to each other through the elastic member 310. On the one hand, the elastic member 310 can provide a restriction for the movement process of the second magnet 322, and on the other hand, it can also prevent the first magnet 321 from The distance to the second magnet 322 is too large or too small. In addition, when the frequency of motion between the first magnet 321 and the second magnet 322 is the same or close to the natural frequency of the elastic member 310 , the vibration amplitude of the first vibration component 300 reaches the maximum. During the use of the vibrating motor, the frequency of the current that needs to be passed into the second vibrating component 400 can be determined according to the frequency parameter that the frequency of the passing current satisfies half of the maximum amplitude of the first vibrating component 300, so as to further expand the vibrating motor. The frequency width of the current corresponding to the large amplitude state can improve the user experience of the vibration motor.

Based on the vibration motor provided by any of the above embodiments, the embodiment of the present application also provides an electronic device, which includes any of the above vibration motors. Of course, the electronic device also includes components such as a motherboard, a display screen, and a battery. Considering the simplicity of the text , which will not be described in detail here.

The electronic device disclosed in the embodiment of the present application may be a mobile phone, a computer, an e-book reader, a wearable device, etc., and the embodiment of the present application does not limit the specific type of the electronic device.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also 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 in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A vibration motor, comprising a casing, a mass, a first vibration assembly and a second vibration assembly, the first vibration assembly and the second vibration assembly are sandwiched between the first surface and the oppositely arranged surface of the casing between the second surfaces;

The first vibrating assembly includes a driver, the driver is mounted on the housing, and the driver cooperates with the mass block;

The second vibration component includes a piezoelectric structural member, and the piezoelectric structural member is connected to both the housing and the mass block;

When the driving member is energized, the driving member drives the mass to reciprocate between the first surface and the second surface; when the piezoelectric structural member is energized, the The piezoelectric structural member deforms and drives the mass to reciprocate between the first surface and the second surface.
The vibration motor according to claim 1, wherein the second vibrating assembly further comprises a shrapnel, the shrapnel is a flaring structural member, the flaring end of the shrapnel is provided with a first bonding surface, and the shrapnel The end away from the flaring end is provided with a second bonding surface, wherein,

The elastic sheet is provided between the second surface and the piezoelectric structural member, and the first bonding surface of the elastic sheet is bonded to the piezoelectric structural member, and the second bonding surface of the elastic sheet is bonded to the piezoelectric structural member. The second surface is bonded.
The vibration motor according to claim 2, wherein the elastic piece is provided between the mass block and the piezoelectric structural member, and the first bonding surface of the elastic piece is attached to the piezoelectric structural member , the second bonding surface of the elastic sheet is bonded to the mass block.
The vibration motor according to claim 3, wherein the projections of each of the elastic pieces in the opposite direction of the first surface and the second surface are located on the piezoelectric structural member.
The vibration motor according to claim 2, wherein a gasket is provided between the elastic piece and the piezoelectric structural member, and the elastic piece is connected to the piezoelectric structural member through the gasket.
The vibration motor according to claim 2, wherein the elastic piece includes a connecting section, a deforming section and a mounting section, the opposite ends of the connecting section are connected with the deforming sections, and each of the deforming sections deviates from the One end of the connection section is connected to the installation section, the installation section has the first fitting surface, the connection section has the second fitting surface, and the deformation section is inclined relative to the piezoelectric structural member set up;

When the piezoelectric structural member is energized, the piezoelectric structural member deforms to drive the deformation of the deformation section, so that the distribution of the piezoelectric structural member and the deformation section along the opposite ends of the connecting section The size of the direction is reciprocally switched between increasing and decreasing, and drives the mass block to reciprocate between the first surface and the second surface.
The vibration motor according to claim 1, wherein the vibration motor further comprises a storage and power supply module, and the storage and power supply module is electrically connected to the driving member and the piezoelectric structural member.
The vibration motor according to claim 1, wherein the driving member includes a first magnet and a second magnet, the first magnet is fixedly connected to the mass block, the second magnet is installed in the housing, At least one of the first magnet and the second magnet is an electromagnet.
The vibration motor according to claim 8, wherein the first vibration assembly further comprises an elastic member, one end of the elastic member is fixed to the first magnet, and the other end of the elastic member is fixed to the second magnet. fixed;

When the driving member is energized, the elastic member is in a tension state or a compression state.
An electronic device, comprising the vibration motor according to any one of claims 1-9.