Vibration motors and electronic devices

Abstract

The present application discloses a vibration motor and electronic device, belonging to the field of communication equipment, the vibration motor includes a shell, a mass block, a first vibration component and a second vibration component, the first vibration component and the second vibration component are sandwiched between a first surface and a second surface oppositely arranged in the shell; the first vibration component includes a driving member, the driving member is installed in the shell, and the driving member cooperates with the mass block; the second vibration component includes a piezoelectric structure, the piezoelectric structure is connected to both the shell and the mass block; when the driving member is energized, the driving member drives the mass block to reciprocate between the first surface and the second surface; when the piezoelectric structure is energized, the piezoelectric structure deforms and drives the mass block to reciprocate between the first surface and the second surface. The above technical solution can solve the problem that the bandwidth of the current vibration motor is relatively small.

Description

Technical Field

[0001] The present application belongs to the technical field of communication equipment, and specifically relates to a vibration motor and electronic equipment. Background Art

[0002] With the development of technology, more and more technologies are being applied to electronic devices. For example, in order to improve the dustproof and waterproof performance of electronic devices, the physical buttons in the electronic devices can be replaced with virtual buttons, and by configuring a vibration motor, the pressing of the virtual buttons can still provide the same vibration sensation as the physical buttons. Current vibration motors usually provide vibration sensation by means of a mass block connected to a spring for reciprocating motion. However, due to the limitations of the structural components of such vibration motors, the vibration motor can only generate a larger amplitude when the power supply frequency matches the corresponding parameters of the vibration motor. If the power supply frequency is not within the aforementioned range, the vibration amplitude of the vibration motor is small and the vibration sensation is weak. Therefore, the bandwidth of current vibration motors is relatively small. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a vibration motor and an electronic device to solve the problem that the frequency bandwidth of the current vibration motor is relatively small.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application discloses a vibration motor, which includes a housing, a mass, a first vibration component and a second vibration component, wherein the first vibration component and the second vibration component are sandwiched between a first surface and a second surface oppositely disposed in the housing;

[0006] The first vibration assembly includes a driving member, the driving member is mounted on the housing, and the driving member cooperates with the mass block;

[0007] The second vibration component includes a piezoelectric structure, and the piezoelectric structure is connected to both the housing and the mass block;

[0008] When the driving member is energized, the driving member drives the mass block to reciprocate between the first surface and the second surface; when the piezoelectric structural member is energized, the piezoelectric structural member deforms and drives the mass block to reciprocate between the first surface and the second surface.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, which includes the above-mentioned vibration motor. .

[0010] The embodiment of the present application provides a vibration motor and an electronic device, wherein the vibration motor includes a housing and a mass block installed in the housing, a first vibration component and a second vibration component, wherein the first vibration component and the second vibration component are both connected and matched with the mass block, the first vibration component includes a driving member, and the second vibration component includes a piezoelectric structural member, wherein the driving member and the piezoelectric structural member can both drive the mass block to reciprocate between the first surface and the second surface relative to each other in the housing when powered on, thereby enabling the vibration motor to provide a vibration effect. Furthermore, the component in the second vibration component used to drive the mass block to move is a piezoelectric structural member, and the frequency of the expansion and contraction deformation of the piezoelectric structural member is related to the frequency of the input electricity, and thus the vibration frequency of the piezoelectric structural member can be controlled by controlling the frequency of power transmission to the piezoelectric structural member, which can expand the frequency bandwidth of the vibration motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0012] Figure 1 A schematic diagram of the structure of a vibration motor disclosed in an embodiment of the present application;

[0013] Figure 2 A cross-sectional schematic diagram of a vibration motor disclosed in an embodiment of the present application;

[0014] Figure 3 A schematic diagram of a partial structure of a vibration motor disclosed in an embodiment of the present application;

[0015] Figure 4 for Figure 3 A schematic diagram of the structure shown in another direction;

[0016] Figure 5 A schematic diagram of a state of the first vibration component in the vibration motor disclosed in the embodiment of the present application when working;

[0017] Figure 6 It 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;

[0018] Figure 7 A schematic diagram of a state of the second vibration component in the vibration motor disclosed in the embodiment of the present application when working;

[0019] Figure 8 This is a schematic diagram of another working state of the second vibration component in the vibration motor disclosed in an embodiment of the present application.

[0020] Description of reference numerals:

[0021] 100-housing, 110-first surface, 120-second surface,

[0022] 200-mass block,

[0023] 300-first vibration component, 310-elastic member, 321-first magnet, 322-second magnet, 3221-iron core, 3222-coil,

[0024] 400-second vibration component, 410-piezoelectric structure, 420-spring, 421-connecting section, 422-deformation section, 423-installation section, 430-gasket,

[0025] 510-power storage module, 520-flexible circuit board. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0028] The folding mechanism and the electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0029] like Figures 1 to 8 As shown, the embodiment of the present application discloses a vibration motor and an electronic device. The vibration motor includes a housing 100, a mass block 200, a first vibration component 300 and a second vibration component 400. The vibration motor can be applied in the electronic device.

[0030] Among them, the shell 100 is the overall external structure of the vibration motor, which can provide an installation foundation and protection for other components in the vibration motor. The shell 100 can be made of materials with relatively large structural strength such as plastic or metal. The shape and size of the shell 100 can be determined according to actual needs and are not limited here. In addition, the entire shell 100 can be a split structure, and the shell 100 has an inner cavity to provide a housing for other components. After the other components in the vibration motor are installed in the shell 100, the shell 100 can be formed into a complete structure by forming a fixed connection relationship between the components in the shell 100. More specifically, the shell 100 can include a shell body and a packaging plate. The shell body is provided with an open cavity. The packaging plate can be connected to the shell body by mutual packaging, so that the open cavity can be formed into a relatively closed cavity, and the packaging work of other components installed in the shell 100 is completed.

[0031] The housing 100 has a first surface 110 and a second surface 120, and the first surface 110 and the second surface 120 are arranged opposite to each other. Specifically, the first surface 110 and the second surface 120 may be two opposite surfaces in the inner surface of the housing 100, and the shapes and sizes of the two surfaces may be the same, so that the structure of the entire housing 100 is more regular, which is convenient for processing and assembly, and makes it easier for the electronic device 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, and the other may be located on the packaging board, and the first surface 110 and the second surface 120 are opposite to each other.

[0032] The mass block 200 is a device used to enhance the vibration effect in the vibration motor. The mass block 200 can be made of a relatively high-density material 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 a good inertial effect. The specific shape, size, weight and other parameters of the mass block 200 can be flexibly determined according to the design requirements of the vibration motor, and are not limited here.

[0033] The first vibration component 300 and the second vibration component 400 are both components that can provide vibration in the vibration motor. In order to ensure that both can provide a good vibration effect, the first vibration component 300 and the second vibration component 400 can be connected to the mass block 200, so that when either of the two is working, it can drive the mass block 200 to move and improve the vibration effect.

[0034] The first vibration assembly 300 and the second vibration assembly 400 are sandwiched between the first surface 110 and the second surface 120. Optionally, the first vibration assembly 300 and the second vibration assembly 400 may be distributed along a direction perpendicular to the relative direction of the first surface 110 and the second surface 120.

[0035] In order to improve the overall vibration effect of the vibration motor, the first vibration component 300 and the second vibration component 400 can be distributed along the relative direction of the first surface 110 and the second surface 120. In this case, the maximum vibration amplitude of the first vibration component 300 and the second vibration component 400 can be increased to improve the vibration effect; and, in the case of adopting the above technical solution, although the thickness of the vibration motor is increased, the length and width of the vibration motor can be reduced, which is more conducive to the layout design of the vibration motor in the electronic device. At the same time, in this embodiment, the mass block 200 can be arranged between the first vibration component 300 and the second vibration component 400, and in order to ensure that the vibration motor can work normally, an elastic member can be arranged between the first vibration component 300, the mass block 200 and the second vibration component 400 to ensure that the first vibration component 300 and the second vibration component 400 can drive the mass block 200 to move relative to the shell 100 normally.

[0036] More specifically, the axes of the first vibration component 300 and the second vibration component 400 can be made to coincide with each other. In this case, when one of the first vibration component 300 and the second vibration component 400 vibrates, the other can be prevented from being damaged by axial deflection when the other is deformed by the vibration, and the vibration effects of the first vibration component 300 and the second vibration component 400 can be further improved. Specifically, the axes of the components in the first vibration component 300 and the second vibration component 400 that provide driving effects can be made to coincide with each other, so as to achieve the purpose of coinciding the axes of the first vibration component 300 and the second vibration component 400.

[0037] Furthermore, when the first vibration component 300 and the second vibration component 400 are distributed in the relative direction of the first surface 110 and the second surface 120, the first vibration component 300 can be located on the side of the second vibration component 400 close to the first surface 110, or the first vibration component 300 can be located on the side of the second vibration component 400 close to the second surface 120, which is not limited herein. For the convenience of the following description, this article takes the case where the first vibration component 300 is located on the side of the second vibration component 400 close to the first surface 110 as an example for description.

[0038] The first vibration assembly 300 includes a driving member, which can be mounted on the housing 100 by bonding or screw connection, and the driving member cooperates with the mass block 200. The driving member can be a device that can provide linear reciprocating motion, such as a linear motor, so that when the driving member is powered on, the driving member can drive the mass block 200 to reciprocate between the first surface 110 and the second surface 120, thereby causing the entire vibration motor to produce a vibration effect.

[0039] The second vibration component 400 includes a piezoelectric structural member 410, and the piezoelectric structural member 410 can be specifically a piezoelectric ceramic. More specifically, the piezoelectric ceramic can be a barium titanate piezoelectric ceramic or a lead zirconate titanate piezoelectric ceramic. The piezoelectric structural member 410 can be directly connected to the mass block 200 by bonding or other means, or other structural members can be provided between the piezoelectric structural member 410 and the mass block 200 to indirectly connect the piezoelectric structural member 410 and the mass block 200 through the aforementioned other structural members. The piezoelectric structural member 410 can generate motion when powered on, and by changing the direction of the current passed into the piezoelectric structural member 410, the piezoelectric structural member 410 can generate motion in the opposite direction, and then when the piezoelectric structural member 410 is powered on, the deformation of the piezoelectric structural member 410 can drive the mass block 200 to reciprocate between the first surface 110 and the second surface 120, thereby ensuring that the second vibration component 400 can also make the entire vibration motor produce a vibration effect.

[0040] More specifically, the movement direction of the piezoelectric structural member 410 can be repeatedly changed by passing alternating current into the piezoelectric structural member 410, so that the piezoelectric structural member 410 can switch between two deformation states to drive the mass block 200 to reciprocate. In addition, when currents of different frequencies are passed into the piezoelectric structural member 410, parameters such as the movement amplitude and frequency generated by the piezoelectric structural member 410 can also be changed accordingly.

[0041] The embodiment of the present application provides a vibration motor and an electronic device, wherein the vibration motor includes a housing 100 and a mass block 200 installed in the housing 100, a first vibration assembly 300 and a second vibration assembly 400, wherein the first vibration assembly 300 and the second vibration assembly 400 are both connected and matched with the mass block 200, the first vibration assembly 300 includes a driving member, and the second vibration assembly 400 includes a piezoelectric structural member 410, wherein the driving member and the piezoelectric structural member 410 can both drive the mass block 200 to reciprocate between the first surface 110 and the second surface 120 opposite to each other in the housing 100 in the energized state, so that the vibration motor can provide a vibration effect. In addition, the component in the second vibration assembly 400 used to drive the mass block 200 to move is the piezoelectric structural member 410, and the frequency of the expansion and contraction deformation of the piezoelectric structural member 410 is related to the frequency of the input electricity, and then the vibration frequency of the piezoelectric structural member 410 can be controlled by controlling the frequency of the current input to the piezoelectric structural member 410, which can expand the frequency bandwidth of the vibration motor.

[0042] As described above, the piezoelectric structure 410 can be directly connected to the mass block 200 by bonding or the like. Correspondingly, when the piezoelectric structure 410 is connected to the second surface 120 of the shell 100, the piezoelectric structure 410 can also be directly connected to the second surface 120 by bonding.

[0043] In another embodiment of the present application, the second vibration component 400 further includes a spring sheet 420, which is a flared structure. More vividly, the spring sheet 420 can be a cymbal-shaped structure. The flared section of the spring sheet 420 is provided with a first fitting surface, and the end of the spring sheet 420 away from the flared 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 structure 410 and improve the deformation performance of the piezoelectric structure 410, such as Figure 2 As shown, a spring sheet 420 is provided between the second surface 120 of the shell 100 and the piezoelectric structural component 410, so that during the deformation process of the piezoelectric structural component 410, the deformation amount generated by the spring sheet 420 is used to expand the deformation range of the piezoelectric structural component 410, thereby increasing the vibration amplitude of the second vibration component 400 and improving the vibration effect of the vibration motor.

[0044] Furthermore, in order to ensure that a relatively stable connection can be formed between the piezoelectric structure 410 and the spring sheet 420, and between the spring sheet 420 and the second surface 120, as shown in FIG. Figure 2 As shown, the first fitting surface of the spring sheet 420 can be fitted with the piezoelectric structural member 410, and the second fitting surface of the spring sheet 420 can be fitted with the second surface 120 of the housing 100. In this case, the connection area between the piezoelectric structural member 410 and the spring sheet 420, and between the spring sheet 420 and the second surface 120 can be increased, thereby improving the reliability of the connection relationship between the spring sheet 420, the housing 100, and the piezoelectric structural member 410. Of course, the spring sheet 420, the piezoelectric structural member 410, and the housing 100 can also be connected to each other by bonding, so as to reduce the difficulty of connecting the components while ensuring a high connection reliability between the piezoelectric structural member 410, the housing 100, and the spring sheet 420.

[0045] In addition, by connecting the first end face of the shrapnel 420 at the flared end to the piezoelectric structural component 410, deformation within a larger range on the piezoelectric structural component 410 can be transmitted to the shrapnel 420, thereby increasing the maximum deformation of the shrapnel 420 and further improving the vibration amplitude of the second vibration component 400.

[0046] Specifically, the side of the spring piece 420 can be a conical side structure. In order to further improve the vibration ability of the piezoelectric structure 410, the spring piece 420 can be a strip-shaped structure as a whole, and the middle of the spring piece 420 is arched to form a flared structure. In addition, during the installation of the spring piece 420, only the opposite ends of the spring piece 420 can be connected to the piezoelectric structure 410, which can further reduce the limiting effect of the connection relationship between the spring piece 420 and the piezoelectric structure 410 on the deformation ability of the piezoelectric structure 410.

[0047] Based on the above embodiment, further, Figure 2As shown, the above-mentioned spring sheet 420 can also be arranged between the mass block 200 and the piezoelectric structural component 410, and the first fitting surface of the spring sheet 420 is fitted with the piezoelectric structural component 410, and the second fitting surface of the spring sheet 420 is fitted with the mass block 200, thereby reducing the limiting effect of the connection relationship between the mass block 200 and the piezoelectric structural component 410 on the deformation ability of the piezoelectric structural component 410, further improving the deformation ability of the piezoelectric structural component 410, and with the help of the spring sheets 420 on the opposite sides of the piezoelectric structural component 410, the deformation amount of the piezoelectric structural component 410 is maximized, the vibration amplitude of the second vibration component 400 is increased, and then the vibration effect of the vibration motor is improved.

[0048] Specifically, the structure and size of the spring pieces 420 disposed on opposite sides of the piezoelectric structure 410 can be flexibly determined according to the size and shape parameters of the piezoelectric structure 410 and the mass block 200. Figure 2-Figure 4 As shown, the shapes of the spring sheets 420 can be made the same, and the relative positions of the spring sheets 420 and the piezoelectric structural component 410 can be made the same or basically similar. This can make the positions of the constraints on the piezoelectric structural component 410 caused by the connection between the spring sheets 420 and the piezoelectric structural component 410 the same or basically similar, thereby further reducing the degree of reduction in the deformation capacity of the piezoelectric structural component 410 caused by the interconnection with the spring sheets 420.

[0049] Furthermore, if Figure 2 As shown, the projections of each spring sheet 420 in the aforementioned relative directions can be located on the piezoelectric structural member 410. In other words, the first bonding surfaces of the spring sheets 420 are completely connected to the piezoelectric structural member 410, which can further improve the stability of the connection relationship between the spring sheets 420 and the piezoelectric structural member 410, and can also further improve the maximum deformation capacity of the spring sheets 420 when the piezoelectric structural member 410 deforms. Of course, in order to maximize the transmission of the deformation of the piezoelectric structural member 410 to the spring sheets 420, the opposite ends of the spring sheets 420 can be as close as possible to the opposite ends of the piezoelectric structural member 410.

[0050] Furthermore, if Figure 3 and Figure 4 As shown, a gasket 430 may be provided between the spring sheet 420 and the piezoelectric structural member 410, and the spring sheet 420 is connected to the piezoelectric structural member 410 through the gasket 430. The gasket 430 has a certain degree of flexible deformation capability, so that when the piezoelectric structural member 410 is deformed, the limiting effect of the connection relationship between the piezoelectric structural member 410 and the spring sheet 420 on the deformation of the piezoelectric structural member 410 can be further alleviated. The gasket 430 can be made of materials such as rubber, and the gasket 430, the spring sheet 420 and the piezoelectric structural member 410 can be connected to each other by bonding or other means.

[0051] As described above, in order to improve the elasticity of the spring piece 420, the spring piece 420 may be a strip-shaped structural member, such as Figure 3 and Figure 4 As shown, the spring piece 420 may include a connecting section 421, a deformation section 422 and a mounting section 423, wherein the two opposite ends of the connecting section 421 are connected to the deformation sections 422, and one end of each deformation section 422 away from the connecting section 421 is connected to the mounting section 423, the mounting section 423 has a first fitting surface, and the connecting section 421 has a second fitting surface, that is, the spring piece 420 is connected to the piezoelectric structure 410 through the mounting section 423, and is connected to the shell 100 (or the mass block 200) through the connecting section 421.

[0052] In order to ensure that the spring piece 420 has elasticity, Figure 4 As shown, the deformation section 422 is tilted relative to the piezoelectric structure 410, or in other words, the deformation section 422 is tilted relative to the first fitting surface and the second fitting surface, so that the deformation section 422 can produce elastic deformation relative to the connecting section 421 (and the installation section 423), so that the entire spring piece 420 has the ability to deform.

[0053] Among them, Figure 7 and Figure 8 As shown, when the piezoelectric structural component 410 is energized, the piezoelectric structural component 410 deforms and drives the spring piece 420 to deform, specifically, the deformation segment 422 deforms. During the deformation of the piezoelectric structural component 410 and the deformation segment 422, the dimensions of the two along the distribution directions at opposite ends of the connecting segment 421 switch back and forth between increase and decrease. Correspondingly, the dimensions of the piezoelectric structural component 410 and the deformation segment 422 in the aforementioned relative directions switch back and forth between decrease and increase, so that the piezoelectric structural component 410 and the spring piece 420 can drive the mass block 200 to reciprocate between the first surface 110 and the second surface 120.

[0054] As described above, when one of the first vibration assembly 300 and the second vibration assembly 400 is working, both can drive the mass block 200 to vibrate, and because both the first vibration assembly 300 and the second vibration assembly 400 are connected to the mass block 200, they can also drive the other to vibrate. Figure 2As shown, the vibration motor may also include a power storage module 510, which can store and supply electrical energy. The power storage module 510 may specifically be a lithium battery, and when the vibration motor is applied to an electronic device, the power storage module 510 may be (at least a part of) the battery of the electronic device. The power storage module 510 is electrically connected to both the driver and the piezoelectric structure 410, so that both the driver and the piezoelectric structure 410 can exchange electrical energy with the power storage module 510. Specifically, the driver and the piezoelectric structure 410 may be electrically connected to the power storage module 510 via a cable.

[0055] To expand on this, Figure 5 and Figure 6 As shown, when the driving member is powered on, the driving member can drive the mass block 200 to move between the first surface 110 and the second surface 120. As described above, the second vibration component 400 can also generate vibration motion between the first surface 110 and the second surface 120 with the driving member, so that the piezoelectric structure 410 can generate electric charge 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 driving member to provide at least a part of the required electric energy for the driving member, which enables the electric energy in the vibration motor to be recycled and reused, reducing the overall energy consumption of the vibration motor, and further when the vibration motor is applied to electronic equipment, the endurance of the electronic equipment can be improved.

[0056] As described above, the driving member may be a linear motor. 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 to the mass block 200, and the second magnet 322 is mounted on the housing 100. At least one of the first magnet 321 and the second magnet 322 is an electromagnet. That is, in the present embodiment, the driving member drives the mass block 200 to reciprocate between the first surface 110 and the second surface 120 through a magnetic matching relationship. Specifically, by changing the direction of the current passed into the electromagnet, the direction of the magnetic pole of the electromagnet can be changed, so that the first magnet 321 and the second magnet 322 can be in a state of mutual attraction and mutual repulsion, respectively, and then the first magnet 321 and the second magnet 322 can be cyclically switched between the two states of approaching each other and moving away from each other, driving the mass block 200 to reciprocate between the first surface 110 and the second surface 120.

[0057] Specifically, the first magnet 321 and the mass block 200 can be fixed to each other by bonding or other means, and the first magnet 321 can be a permanent magnet, and the second magnet 322 can be an electromagnet. The second magnet 322 includes an iron core 3221 and a coil 3222, and the coil 3222 is wound on the iron core 3221. The coil 3222 can be connected to the power supply through the flexible circuit board 520 to supply power to the flexible circuit board 520. In the above case, the driving member can have a driving function and the overall structural complexity of the driving member can be relatively low; and in the case where the driving member adopts the above technical solution, the first magnet 321 and the second magnet 322 can be provided with an initial spacing, so that when the piezoelectric structure 410 drives the mass block 200 to reciprocate, the first magnet 321 and the second magnet 322 will not interfere with each other. In the above case, even if the elastic member and other devices are no longer provided in the vibration motor, the vibration motor can be guaranteed to work normally. In addition, when the driving member adopts a magnetic driving method, the driving direction of the driving member can be easily changed by supplying alternating current to the driving member, so that the driving member can drive the mass block 200 to reciprocate between the first surface 110 and the second surface 120.

[0058] Optionally, by providing a limiting structure outside the first magnet 321 and the second magnet 322, the movement trajectory of the second magnet 322 is limited by the limiting structure to ensure that the first magnet 321 and the second magnet 322 can always form a stable matching relationship. Figure 2 As shown, the first vibration 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 fixed to the second magnet 322. When the driving member is energized, the elastic member 310 is in a stretched state or a compressed state.

[0059] That is to say, the first magnet 321 and the second magnet 322 are connected to each other through the elastic member 310. The elastic member 310 can provide a limiting effect on the movement process of the second magnet 322 on the one hand, and can also prevent the distance between the first magnet 321 and the second magnet 322 from being too large or too small on the other hand. In addition, when the movement frequency between the first magnet 321 and the second magnet 322 is the same or similar 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 vibration motor, the frequency of the current that needs to be passed into the second vibration component 400 can be determined based on the frequency parameter that the frequency of the current passed meets half of the maximum amplitude of the first vibration component 300, so as to further expand the frequency width of the current corresponding to the state of the vibration motor being in a larger amplitude, thereby improving the user experience of the vibration motor.

[0060] Based on the vibration motor provided in any of the above embodiments, an 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 mainboard, a display screen and a battery. Considering the simplicity of the text, it will not be introduced in detail here.

[0061] The electronic device disclosed in the embodiments of the present application may be a mobile phone, a computer, an e-book reader, a wearable device, etc. The embodiments of the present application do not limit the specific type of the electronic device.

[0062] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the 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, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0063] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A vibration motor, characterized in that: It comprises a shell, a mass block, a first vibration component and a second vibration component, wherein the first vibration component and the second vibration component are sandwiched between a first surface and a second surface oppositely arranged in the shell, and the axes of the first vibration component and the second vibration component coincide with each other; The first vibration component includes a driving member, the driving member includes a first magnet, a second magnet and an elastic member, the first magnet is fixedly connected to the mass block, the second magnet is installed on the housing, at least one of the first magnet and the second magnet is an electromagnet, 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, and when the driving member is powered on, the elastic member is in a stretched state or a compressed state; The second vibration component includes a piezoelectric structure, and the piezoelectric structure is connected to both the housing and the mass block; When the driving member is powered on, the driving member drives the mass block to reciprocate between the first surface and the second surface; When the piezoelectric structural component is energized, the piezoelectric structural component deforms and drives the mass block to reciprocate between the first surface and the second surface.

2. The vibration motor according to claim 1, characterized in that: The second vibration component further includes a spring sheet, which is a flared structural member, a first fitting surface is provided at the flared end of the spring sheet, and a second fitting surface is provided at the end of the spring sheet away from the flared end, wherein: The spring sheet is disposed between the second surface and the piezoelectric structure, and a first bonding surface of the spring sheet is bonded to the piezoelectric structure, and a second bonding surface of the spring sheet is bonded to the second surface.

3. The vibration motor according to claim 2, characterized in that: The spring sheet is arranged between the mass block and the piezoelectric structure, and a first fitting surface of the spring sheet is fitted with the piezoelectric structure, and a second fitting surface of the spring sheet is fitted with the mass block.

4. The vibration motor according to claim 3, characterized in that: The projections of the elastic sheets in the relative directions between the first surface and the second surface are all located on the piezoelectric structure.

5. The vibration motor according to claim 2, characterized in that: A gasket is provided between the spring sheet and the piezoelectric structural component, and the spring sheet is connected to the piezoelectric structural component through the gasket.

6. The vibration motor according to claim 2, characterized in that: The spring piece includes a connecting section, a deformation section and a mounting section, the two opposite ends of the connecting section are connected to the deformation section, one end of each deformation section away from the connecting section is connected to the mounting section, the mounting section has the first fitting surface, the connecting section has the second fitting surface, and the deformation section is inclined relative to the piezoelectric structural member; When the piezoelectric structural component is energized, the piezoelectric structural component deforms and drives the deformation segment to deform, so that the dimensions of the piezoelectric structural component and the deformation segment along the distribution directions of the opposite ends of the connecting segment are switched back and forth between increasing and decreasing, and drive the mass block to reciprocate between the first surface and the second surface.

7. The vibration motor according to claim 1, characterized in that: The vibration motor further includes a power storage module, and the power storage module is electrically connected to the driving component and the piezoelectric structural component.

8. An electronic device, characterized in that: A vibration motor comprising any one of claims 1 to 7.

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