Vibration motor and electronic device

Abstract

The invention discloses a vibration motor and electronic equipment, the vibration motor comprises a shell, a first vibration assembly and a second vibration assembly, the first vibration assembly is arranged in the shell, the first vibration assembly can vibrate along a first direction, and the second vibration assembly is partially arranged in the first vibration assembly and is spaced from the first vibration assembly. The second vibration assembly can vibrate in the second direction, and the second direction is perpendicular to the first direction. According to the vibration motor, the first vibration assembly and the second vibration assembly are arranged, the first vibration assembly can vibrate in the first direction, the second vibration assembly can vibrate in the second direction, and vibration of the first vibration assembly and vibration of the second vibration assembly are independent of each other, so that the vibration motor is provided with two vibration systems; and the two groups of vibration systems independently vibrate in two different directions, so that richer vibration touch feeling can be provided, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application belongs to the field of terminal equipment, and in particular, relates to a vibration motor and an electronic device. Background Art

[0002] With the continuous development of communication technology, mobile terminal devices such as mobile phones and tablet computers play an increasingly important role in people's daily lives.

[0003] The vibration motor is a very important electronic device on mobile terminal devices such as mobile phones and tablet computers. The vibration motor is used to generate vibration to provide tactile feedback. For example, the vibration motor can be used for incoming call notifications, message notifications, vibration feedback of games, etc. With the continuous update and iteration of the hardware and application software of mobile terminal devices, users have higher and higher requirements for the vibration experience of mobile terminals.

[0004] In the related art, the current vibration motor has a single vibration direction, cannot provide a richer tactile experience, and cannot meet the user's usage needs. Summary of the invention

[0005] The present application provides a vibration motor and an electronic device to provide a richer vibration tactile sensation and enhance the user experience.

[0006] In a first aspect, the present application provides a vibration motor, comprising:

[0007] case;

[0008] A first vibration component is disposed in the housing, and the first vibration component can vibrate along a first direction;

[0009] The second vibration component is partially disposed in the first vibration component and is spaced apart from the first vibration component. The second vibration component can vibrate along a second direction, wherein the second direction is perpendicular to the first direction.

[0010] In a second aspect, the present application also provides an electronic device, comprising a housing and the vibration motor described above, wherein the vibration motor is disposed in the housing.

[0011] The vibration motor provided by the present application is provided with a first vibration component and a second vibration component, the first vibration component can vibrate in a first direction, the second vibration component can vibrate in a second direction, and the second vibration component is spaced from the first vibration component, so that the vibration of the first vibration component and the vibration of the second vibration component are independent of each other and do not interfere with each other, so that the vibration motor has two sets of vibration systems, and the two sets of vibration systems vibrate independently in two different directions, which can provide a richer vibration touch. When the vibration motor is applied to electronic equipment, it can meet the user's higher demand for the vibration touch of the electronic equipment and enhance the user's experience. In addition, the present application sets the second vibration component partially inside the first vibration component, and the second vibration component mostly uses the internal space of the first vibration component, so there is no need to provide more space for the second vibration component, which can reduce the occupation of the internal space of the first vibration motor, so that the vibration motor can still provide two sets of vibration systems in a relatively small volume, so that the overall volume of the vibration motor can be designed to be relatively small, and when the vibration motor is applied to electronic equipment, it reduces the occupation of the internal space of the electronic equipment by the vibration motor, which is conducive to the thinness of the electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The technical solution and beneficial effects of the present application will be made apparent by describing in detail the specific implementation modes of the present application in conjunction with the accompanying drawings.

[0013] Figure 1 A schematic diagram of the structure of the front and back sides of an electronic device provided in an embodiment of the present application.

[0014] Figure 2 This is a first structural schematic diagram of the vibration motor provided in an embodiment of the present application.

[0015] Figure 3 An exploded view of a vibration motor according to an embodiment of the present application.

[0016] Figure 4 It is a partial structural schematic diagram of the vibration motor according to an embodiment of the present application.

[0017] Figure 5 It is a first cross-sectional schematic diagram of the vibration motor according to an embodiment of the present application.

[0018] Figure 6 Schematic diagram of various design positions of the avoidance space of the first vibration magnetic steel of the vibration motor according to an embodiment of the present application.

[0019] Figure 7 1 is a comparison diagram of steady-state frequency response curves of the vibration motor according to the embodiment of the present application and a traditional vibration motor.

[0020] Figure 8 This is a second cross-sectional schematic diagram of the vibration motor according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following will be combined with the attached examples of the present application Figure 1 To Attachment Figure 8 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only 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 those skilled in the art without creative work are within the scope of protection of the present application.

[0022] The embodiments of the present application provide a vibration motor and an electronic device. The vibration motor provided in the embodiments of the present application can provide two sets of vibration systems, and the vibration motor can vibrate independently in two vibration directions, which can provide a richer vibration experience. When the vibration motor provided in the embodiments of the present application is applied to electronic devices, it can meet the user's higher demand for vibration and improve the user's experience.

[0023] As used herein, "electronic equipment" (or simply "terminal") includes, but is not limited to, a device configured to receive / send communication signals via a wireline connection (such as via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (for example, for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal".

[0024] Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device that is equipped with a cellular communications module.

[0025] For example, the electronic device provided in the embodiments of the present application can be a mobile terminal product such as a mobile phone, a tablet computer, or a vehicle-mounted computer, a laptop computer, a data storage device, a video playback device, a wearable device, or other device with a mobile communication function. In order to better understand the present application scheme, the following description is made by taking the electronic device as a mobile phone as an example.

[0026] Please refer to Figure 1 , Figure 1The front and back structural diagrams of the electronic device provided in the embodiment of the present application are as follows: The electronic device 10 comprises a housing 100, a display screen 200, a mainboard 300 and a vibration motor 400.

[0027] The display screen 200 is disposed on the housing 100 to form a display surface of the electronic device 10 for displaying information such as images and texts. The display screen 200 may include a liquid crystal display (LCD) or an organic light-emitting diode display (OLED).

[0028] The housing 100 is used to form the outer contour of the electronic device 10, so as to accommodate the electronic devices and functional components of the electronic device 10, and at the same time to seal and protect the electronic devices and functional components inside the electronic device 10. For example, the electronic devices and functional components such as the battery, the mainboard 300, the vibration motor 400, and the sensor of the electronic device 10 can be arranged inside the housing 100. It can be understood that the housing 100 can include a middle frame 110 and a back cover 120.

[0029] Among them, the middle frame 110 can be a plate-like (or sheet-like) structure, or a hollow frame structure. The middle frame 110 is used to provide support for the electronic devices or functional components in the electronic device 10, so as to install the electronic devices and functional components of the electronic device 10 together. For example, the middle frame 110 can be provided with grooves, protrusions and other structures to facilitate the installation of the electronic devices or functional components of the electronic device 10. It can be understood that the material of the middle frame 110 can include metal or plastic.

[0030] The back cover 120 is used to seal the electronic devices and functional components of the electronic device 10 together with the middle frame 110 and the display screen 200 inside the electronic device 10 to protect the electronic devices and functional components of the electronic device 10. It can be understood that the material of the back cover 120 can also include metal or plastic.

[0031] The motherboard 300 is disposed inside the housing 100. For example, the motherboard 300 can be mounted on the middle frame 110 of the housing 100 for fixing, and the motherboard 300 is sealed inside the electronic device 10 through the back cover 120. Among them, one or more functional components such as a processor, an earphone jack, an acceleration sensor, a gyroscope, and a motor can be integrated on the motherboard 300. At the same time, the display screen 200 can be electrically connected to the motherboard 300 so that the display of the display screen 200 can be controlled by the processor on the motherboard 300.

[0032] The vibration motor 400 is used to generate vibration so that the electronic device 10 provides vibration feedback in some usage scenarios, such as receiving an incoming call, information or other messages, and in a game scenario. The vibration motor 400 is arranged inside the housing 100. For example, the vibration motor 400 can be mounted on the middle frame 110 of the housing 100 for fixing, and the vibration motor 400 is sealed inside the electronic device 10 by the back cover 120. The vibration motor 400 can be electrically connected to the mainboard 300 to control the vibration of the vibration motor 400 through the processor on the mainboard 300.

[0033] With the continuous update and iteration of the hardware and application software of mobile terminal devices, users have higher and higher requirements for the vibration experience of mobile terminals. However, in the related art, the vibration direction of the current vibration motor is single, which cannot provide a richer tactile experience and cannot meet the user's usage needs.

[0034] In view of this, the present embodiment improves the vibration motor 400. Figure 2 and Figure 3 , Figure 2 This is a first structural schematic diagram of a vibration motor provided in an embodiment of the present application. Figure 3 FIG. 4 is an exploded view of the vibration motor of the embodiment of the present application. In the embodiment of the present application, the vibration motor 400 includes a housing 410 , a first vibration component 420 , and a second vibration component 430 .

[0035] The housing 410 is used to form the outer contour of the vibration motor 400 so as to accommodate the internal vibration components of the vibration motor 400, and at the same time to position, support, seal and protect the vibration components in the vibration motor 400. It is understandable that the housing 410 can be made of metal to shield other electromagnetic signals inside the electronic device 10 and prevent other electromagnetic signals from interfering with the vibration of the vibration components in the vibration motor 400.

[0036] Exemplarily, in order to facilitate the installation of the vibration component in the shell 410, the shell 410 may include a first shell 411 and a second shell 412. The vibration component inside the vibration motor 400 can be installed on the first shell 411, and the second shell 412 is covered on the first shell 411, thereby sealing the vibration component inside the shell 410.

[0037] The first vibration component 420 is disposed in the housing 410 , and the first vibration component 420 can vibrate along a first direction.

[0038] Specifically, the first vibration component 420 vibrates along a first direction and transmits the generated vibration to the shell 410, so that the shell 410 is vibrated along the first direction. When the vibration motor 400 is installed in the electronic device 10, the shell 410 transmits the vibration to the electronic device 10, so that the electronic device 10 is vibrated along the first direction, thereby allowing the user to feel the vibration touch.

[0039] by Figure 2 The length direction of the vibration motor 400 is the X-axis, and the thickness direction (height direction) is the Z-axis to establish a three-dimensional spatial coordinate system XYZ, and the first direction can be the X-axis direction of the three-dimensional spatial coordinate system, that is, the length direction of the vibration motor 400. Of course, in other embodiments of the present application, the first direction can also be the Y-axis direction of the three-dimensional spatial coordinate system, that is, the width direction of the vibration motor 400. The embodiment of the present application is only described by taking the first direction as the length direction of the vibration motor 400, that is, the X-axis direction of the three-dimensional spatial coordinate system as an example.

[0040] The second vibration component 430 is partially disposed in the first vibration component 420 and is spaced apart from the first vibration component 420 . The second vibration component 430 can vibrate along a second direction, wherein the second direction is perpendicular to the first direction.

[0041] As described above, the first direction may be the X-axis direction of the three-dimensional spatial coordinate system, that is, the length direction of the vibration motor 400, and the second direction is perpendicular to the first direction. In this case, the second direction may be the Z-axis direction of the three-dimensional spatial coordinate system, that is, the thickness direction of the vibration motor 400. Similarly, in an optional embodiment of the present application, when the first direction is the X-axis direction of the three-dimensional spatial coordinate system, the second direction may also be the Y-axis direction of the three-dimensional spatial coordinate system, that is, the width direction of the vibration motor 400.

[0042] It should be noted that the second vibration component 430 is partially disposed in the first vibration component 420. The interior of the first vibration component 420 here may be the interior of one of the components constituting the first vibration component 420, or the interior of the entire vibration system formed by the first vibration component 420. In addition, the second vibration component 430 is spaced apart from the first vibration component 420, which means that when the first vibration component 420 is in a vibrating or non-vibrating state, there is a gap between the second vibration component 430 and the first vibration component 420, and the two do not contact each other. Specifically, an accommodation space for accommodating the second vibration component 430 may be provided or formed in the first vibration component 420, so that the second vibration component 430 can be partially accommodated in the first vibration component 420.

[0043] It can be understood that the second vibration component 430 is partially disposed in the first vibration component 420, and most of the structure of the second vibration component 430 can be located in the first vibration component 420, while a small part of the structure is connected to the shell 410, so that the vibration generated by the second vibration component 430 can be transmitted to the shell 410, and the shell 410 transmits the vibration to the electronic device 10, so that the electronic device 10 is vibrated along the second direction, so that the user can feel the vibration touch.

[0044] At the same time, the second vibration component 430 is separated from the first vibration component 420 and the two do not contact each other, so that the vibration of the first vibration component 420 and the vibration of the second vibration component 430 are independent of each other, preventing the vibrations of the two from interfering with each other. Then, the first vibration component 420 and the second vibration component 430 can vibrate simultaneously under the control of the processor, which can enhance the vibration tactile feel of the vibration motor 400 and improve the user experience.

[0045] It should also be pointed out that the first vibration component 420 and the second vibration component 430 can also vibrate simultaneously or separately under different control parameters. For example, the processor can control and adjust the first vibration component 420 and the second vibration component 430 to vibrate with different sensitivities, amplitudes, frequencies, etc., respectively. Then, the vibration motor 400 can provide different vibration tactile sensations according to different usage scenarios of the electronic device 10, provide a richer vibration tactile experience, and further enhance the user experience.

[0046] The vibration motor 400 provided in the embodiment of the present application is provided with a first vibration component 420 and a second vibration component 430, and the second vibration component 430 is provided in the first vibration component 420 and is spaced apart from the first vibration component 420, so that the vibration of the first vibration component 420 and the vibration of the second vibration component 430 are independent of each other and do not interfere with each other. Then, the vibration motor 400 has two sets of vibration systems, and the two sets of vibration systems vibrate independently in two different directions, which can provide richer vibration tactile sensation. When the vibration motor 400 is applied to the electronic device 10, it can meet the user's higher demand for the vibration tactile sensation of the electronic device 10 and enhance the user's usage experience.

[0047] Furthermore, the second vibration component 430 is partially disposed inside the first vibration component 420, and the second vibration component 430 mostly utilizes the internal space of the first vibration component 420. There is no need to provide more space for the second vibration component 430, which can reduce the occupation of the internal space of the vibration motor 400 by the second vibration component 430. Then, the vibration motor 400 can still provide two sets of vibration systems in a relatively small volume, so that the overall volume of the vibration motor 400 can be designed to be relatively small. When the vibration motor 400 is applied to the electronic device 10, the occupation of the internal space of the electronic device 10 by the vibration motor 400 is reduced, which is conducive to the thinness of the electronic device 10.

[0048] Exemplarily, in one embodiment, the first direction is along the length direction of the vibration motor 400, that is, the X-axis direction of the three-dimensional spatial coordinate system, and the second direction is along the thickness direction of the vibration motor 400, that is, the Z-axis direction of the three-dimensional spatial coordinate system. Then, the vibration motor 400 of the embodiment of the present application can generate vibrations along its own length direction and thickness direction, so that the vibration motor 400 has the vibration tactile sensation of both the X-axis linear motor and the Z-axis linear motor.

[0049] For example, please continue to refer to Figure 4 and Figure 5 , Figure 4 This is a partial structural diagram of a vibration motor according to an embodiment of the present application. Figure 5 4 is a first cross-sectional schematic diagram of a vibration motor according to an embodiment of the present application. The first vibration component 420 includes a first vibration magnet 421 and a first coil 422. The first vibration magnet 421 is movably disposed in the housing 410, and the first coil 422 is fixed to the housing 410 and disposed around the first vibration magnet 421. The first coil 422 can generate an electromagnetic force with the first vibration magnet 421 when powered on, so that the first vibration magnet 421 vibrates along the first direction under the action of the electromagnetic force.

[0050] The vibration motor 400 also includes a circuit board 450, which includes a first part and a second part connected to the first part. The first part is arranged in the shell 410 and is electrically connected to the first coil 422, and the second part extends out of the shell 410 for being electrically connected to the mainboard 300 of the electronic device 10. Then, the circuit board 450 can be powered by the mainboard 300 of the electronic device 10, thereby realizing power supply to the first coil 422.

[0051] Specifically, when the processor of the electronic device 10 receives a signal requiring vibration, the processor issues a control instruction to control the mainboard 300 to power the circuit board 450, so that the first coil 422 is energized, and the first coil 422 and the first vibration magnet 421 generate electromagnetic force based on electromagnetic induction, thereby driving the first vibration magnet 421 to vibrate along the first direction.

[0052] The number of the first coils 422 can be multiple, and the drawings of this embodiment only take two first coils 422 as an example. Figure 4 As shown, the two first coils 422 can be respectively arranged near the two ends of the first vibration magnetic steel 421 .

[0053] Please continue to refer to Figure 4 and Figure 5 The first vibration magnetic steel 421 is provided with an avoidance space 421a, and the avoidance space 421a is provided along the second direction penetrating the first vibration magnetic steel 421, and the second vibration component 430 is vibrably provided in the avoidance space 421a.

[0054] Specifically, when the first vibration magnet 421 vibrates along the first direction, the avoidance space 421a also moves back and forth along the first direction with the first vibration magnet 421. Therefore, the avoidance space 421a should be designed to have a sufficient length along the first direction so that within a complete vibration stroke of the first vibration magnet 421, the second vibration component 430 is always located in the area defined by the avoidance space 421a, thereby ensuring that the second vibration component 430 is always not in contact with the first vibration component 420, thereby preventing interference with the vibration of the first vibration component 420.

[0055] By providing an avoidance space 421a in the first vibration magnet 421, the second vibration component 430 can be partially disposed in the avoidance space 421a, thereby realizing that the second vibration component 430 is partially disposed inside the first vibration component 420. The second vibration component 430 utilizes the space formed by removing part of the entity of the first vibration magnet 421, which can reduce the occupation of the remaining space in the shell 410 and reduce the overall volume of the vibration motor 400.

[0056] Please refer to Figure 6 , Figure 6 This is a schematic diagram of various design positions of the avoidance space of the first vibration magnet of the vibration motor of the embodiment of the present application. The setting position of the avoidance space 421a can be in various ways.

[0057] For example, the avoidance space 421a can be set at the side edge of the first vibration magnetic steel 421. Figure 6 As shown in (a), a part of one of the side walls of the first vibration magnetic steel 421 can be designed to be recessed inward, so that a through avoidance gap is formed at the side edge of the first vibration magnetic steel 421. It should be noted that when the second vibration component 430 is partially disposed in the avoidance gap, the avoidance gap can be understood as an inner cavity part of the vibration system formed by the first vibration component 420, so that the second vibration component 430 can be partially disposed inside the vibration system formed by the first vibration component 420, which can reduce the occupation of the internal space of the shell 410.

[0058] For another example, the avoidance space 421a may also be disposed in the middle of the first vibration magnetic steel 421. Figure 6 As shown in (b), a through avoidance slot is formed in the middle of the first vibration magnet 421. At this time, the second vibration component 430 can be partially inserted into the avoidance slot, and the occupation of the internal space of the shell 410 can also be reduced.

[0059] For example, please refer to Figure 4 and Figure 5 In one embodiment, the avoidance space 421 a is disposed through the middle of the first vibration magnetic steel 421 .

[0060] Specifically, the avoidance space 421a can be set in the middle of the first vibration magnetic steel 421 and symmetrical about the center line of the first vibration magnetic steel 421. Then, the overall shape of the first vibration magnetic steel 421 is relatively regular, so that the first vibration magnetic steel 421 has good strength, and at the same time, the force at various locations of the first vibration magnetic steel 421 during vibration is relatively uniform, thereby preventing the first vibration magnetic steel 421 from being deformed due to frequent vibration.

[0061] Furthermore, by setting the avoidance space 421a in the middle of the first vibration magnet 421, it is also convenient to place the second vibration component 430. The second vibration component 430 can be set in the middle of the vibration stroke of the first vibration magnet 421 to further avoid interference with the vibration of the first vibration component 420.

[0062] The first vibration magnet 421 vibrates back and forth along the first direction, transmitting the vibration to the shell 410. In order to prevent the shell 410 from deforming under high-frequency vibration, a damping structure can also be provided in the vibration motor 400 to damp and buffer the vibration of the first vibration magnet 421, thereby preventing the shell 410 from deforming and reducing the noise generated during the vibration process.

[0063] For example, please continue to refer to Figure 4 and Figure 5 , the first vibration magnet 421 includes a first end 421b and a second end 421c opposite to each other along a first direction. The first vibration component 420 also includes a first fixed magnet 423 and a second fixed magnet 424. The first fixed magnet 423 is spaced apart at one side of the first end 421b, and the first fixed magnet 423 has a third end 423a, the third end 423a is opposite to the first end 421b, and the magnetic pole of the third end 423a is the same as the magnetic pole of the first end 421b. The second fixed magnet 424 is spaced apart at one side of the second end 421c, and the second fixed magnet 424 has a fourth end 424a, the fourth end 424a is opposite to the second end 421c, and the magnetic pole of the fourth end 424a is the same as the magnetic pole of the second end 421c.

[0064] The third end 423a of the first fixed magnetic steel 423 is opposite to the first end 421b of the first vibration magnetic steel 421, and the fourth end 424a of the second fixed magnetic steel 424 is opposite to the second end 421c of the first vibration magnetic steel 421, that is, the first fixed magnetic steel 423 and the second fixed magnetic steel 424 are respectively arranged on opposite sides of the vibration direction of the first vibration magnetic steel 421. Specifically, the first fixed magnetic steel 423 and the second fixed magnetic steel 424 can be respectively fixedly connected to the two opposite inner side walls of the housing 410 along the first direction, for example, the first fixed magnetic steel 423 and the second fixed magnetic steel 424 can be respectively connected and fixed to the housing 410 by gluing.

[0065] It can be understood that the magnetic poles of the first end 421b and the second end 421c of the first vibrating magnetic steel 421 are opposite in polarity. Taking the magnetic pole of the first end 421b of the first vibrating magnetic steel 421 as an example, the magnetic pole of the second end 421c is an S pole. According to the above configuration, the magnetic pole of the third end 423a of the first fixed magnetic steel 423 is an N pole, and the magnetic pole of the fourth end 424a of the second fixed magnetic steel 424 is an S pole.

[0066] Then, during the vibration of the first vibrating magnetic steel 421 along the first direction, when the first vibrating magnetic steel 421 moves toward the first fixed magnetic steel 423 to the first end 421b close to the third end 423a, since the magnetic poles of the first end 421b and the third end 423a are the same, both being N poles, a magnetic repulsion force is generated between the two, which plays a damping and buffering role, and the magnetic repulsion force between the first end 421b and the third end 423a increases as the distance between the two decreases, thereby preventing the first vibrating magnetic steel 421 from continuing to move toward the first fixed magnetic steel 423, so that the first vibrating magnetic steel 421 will not contact the first fixed magnetic steel 423. Similarly, when the first vibrating magnetic steel 421 moves toward the second fixed magnetic steel 424 to the second end 421c close to the fourth end 424a, since the second end 421c and the fourth end 424a have the same magnetic pole polarity, both are S poles, a magnetic repulsion is generated between the two, which plays a damping and buffering role, and the magnetic repulsion between the second end 421c and the fourth end 424a increases as the distance between the two continues to decrease, thereby preventing the first vibrating magnetic steel 421 from continuing to move toward the second fixed magnetic steel 424, so that the first vibrating magnetic steel 421 will not come into contact with the second fixed magnetic steel 424. In this way, by arranging the first fixed magnet 423 and the second fixed magnet 424 to form magnetic repulsion with the first vibration magnet 421 respectively, the vibration of the first vibration magnet 421 is damped and buffered, and the first vibration magnet 421 will not contact the first fixed magnet 423, the second fixed magnet 424 and the shell 410 during the vibration along the first direction, thereby preventing the shell 410 from being deformed and reducing the noise generated by the vibration.

[0067] Moreover, the present embodiment uses the first fixed magnetic steel 423 and the second fixed magnetic steel 424 as the damping structure of the first vibration component 420, and it is only necessary to ensure that the first fixed magnetic steel 423 and the second fixed magnetic steel 424 have a sufficiently strong magnetic field. Then, the first fixed magnetic steel 423 and the second fixed magnetic steel 424 can be designed to be relatively thin. Compared with the use of springs, springs or foam as damping structures in the related art, the occupation of the internal space of the housing 410 can be reduced, thereby reducing the overall volume of the vibration motor 400. In addition, the first fixed magnetic steel 423 and the second fixed magnetic steel 424 have a simple structure, and do not need to be designed in a complex shape like the springs in the related art, which simplifies the overall structure of the vibration motor 400 and facilitates production and assembly.

[0068] In addition, since magnetism is a characteristic of the magnet itself and is less affected by the environment and other factors, the first vibration magnet 421 generates the same magnetic repulsion as the first fixed magnet 423 and the second fixed magnet 424, that is, the damping force formed on the opposite sides of the first vibration magnet 421 is the same, so that the reciprocating vibration of the first vibration magnet 421 along the first direction is consistent, which can improve the vibration effect of the vibration motor 400.

[0069] It should also be pointed out that in this embodiment, a first fixed magnetic steel 423 and a second fixed magnetic steel 424 are provided to generate magnetic repulsion with the first vibration magnetic steel 421 respectively, thereby forming a "magnetic spring". Compared with the vibration motor in the related art that uses conventional springs, shrapnel or foam as a damping structure, the steady-state vibration bandwidth of the first vibration component 420 can also be increased.

[0070] Please refer to Figure 7 , Figure 7 : is a comparison diagram of the steady-state frequency response curves of the vibration motor of the present application embodiment and the conventional vibration motor. Figure 7 As shown, curve a is the steady-state frequency response curve of the vibration motor 400 of the embodiment of the present application, and curve b is the steady-state frequency response curve of the vibration motor 400 of the related art. It can be seen from the figure that the effective bandwidth of curve a in the steady state is much wider than the effective bandwidth of curve b in the steady state, that is, the effective bandwidth of the vibration motor 400 provided in the present embodiment is much wider than the effective bandwidth of the related art, and the vibration motor 400 of the present embodiment is a wide-band motor.

[0071] It should be noted that broadband means that in a steady state, the effective bandwidth greater than 0.4 Grms must be greater than 150Hz, and the larger the effective bandwidth, the better. The human body's tactile perception range of vibration is between 50Hz-500Hz. The wider the bandwidth within this range, the more rich and layered the vibration tactile feedback output to the user.

[0072] Then, this embodiment widens the curve bandwidth by setting the first fixed magnetic steel 423 and the second fixed magnetic steel 424 as the damping structure of the first vibration component 420, that is, increases the steady-state vibration bandwidth of the first vibration component 420, so that the processor of the electronic device 10 can control and adjust the vibration of the vibration motor 400 more delicately, further enrich the vibration tactile sensation of the vibration motor 400, and based on the richer vibration tactile sensation, the relevant hardware manufacturers or application software providers of the electronic device 10 can provide richer and broader interactive designs accordingly, thereby enhancing the richness and layering of the vibration tactile feedback output to the user and improving the user experience.

[0073] In order to improve the vibration effect, a limiting structure may be further provided inside the vibration motor 400 so that the first vibration magnet 421 can stably vibrate along the first direction.

[0074] For example, please refer to Figure 5 and Figure 8 , Figure 8 The second cross-sectional schematic diagram of the vibration motor of the embodiment of the present application. The vibration motor 400 further includes a stopper 440, which is disposed in the housing 410 and has a guide hole 440a, which penetrates the stopper 440 along a first direction so that the first vibration magnet 421 can vibrate through the guide hole 440a.

[0075] It can be understood that the inner contour size of the guide hole 440a is slightly larger than the outer contour size of the first vibration magnet 421, so as to guide and limit the first vibration magnet 421, while ensuring that the first vibration magnet 421 can smoothly reciprocate along the guide hole 440a.

[0076] like Figure 8 As shown, the stopper 440 includes a first side wall 441, a second side wall 442, a third side wall 443 and a fourth side wall 444 that enclose and form the guide hole 440a, and the first side wall 441, the second side wall 442, the third side wall 443 and the fourth side wall 444 are connected in sequence, wherein the first side wall 441 and the third side wall 443 are arranged relatively along the height direction (i.e., the Z-axis direction) of the vibration motor 400, and the second side wall 442 and the fourth side wall 444 are arranged relatively along the width direction (i.e., the Y-axis direction) of the vibration motor 400. Then, the first side wall 441 and the third side wall 443 limit the freedom of movement of the first vibration magnetic steel 421 along the Z-axis direction, and the second side wall 442 and the fourth side wall 444 limit the freedom of movement of the first vibration magnetic steel 421 along the Y-axis direction, so that the first vibration magnetic steel 421 can only reciprocate along the X-axis direction (i.e., the first direction) under the action of electromagnetic force.

[0077] The limiting member 440 may be made of a non-magnetic material, for example, the limiting member 440 may be made of a plastic material, so as to avoid affecting the vibration of the first vibration magnetic steel 421 .

[0078] For example, please refer to Figure 4 , Figure 5 and Figure 8 The second vibration component 430 includes a second vibration magnet 431 and a second coil 432. The second vibration magnet 431 is movably disposed in the housing 410, and the second coil 432 is fixed to the housing 410 and disposed around the second vibration magnet 431. The second coil 432 can generate an electromagnetic force with the second vibration magnet 431 when powered, so that the second vibration magnet 431 vibrates along the second direction under the action of the electromagnetic force.

[0079] Specifically, the second coil 432 is electrically connected to the first part of the circuit board 450. When the processor of the electronic device 10 receives a signal requiring vibration, the processor issues a control instruction to control the mainboard 300 to power the circuit board 450. The circuit board 450 powers the second coil 432. The second coil 432 and the second vibration magnet 431 generate electromagnetic force based on electromagnetic induction, thereby driving the second vibration magnet 431 to vibrate along the second direction.

[0080] Please refer to Figure 8 The housing 410 includes a sleeve 413 extending along the second direction. The second vibration magnet 431 is disposed in the sleeve 413 and can vibrate along the axial direction of the sleeve 413 under the action of electromagnetic force. The second coil 432 is sleeved on the sleeve 413.

[0081] The sleeve 413 is fixedly connected to the shell 410. The sleeve 413 limits the freedom of movement of the second vibration magnet 431 along the length direction and width direction (i.e., the X-axis and Y-axis directions) of the vibration motor 400, so that the second vibration magnet 431 only vibrates back and forth along the height direction (i.e., the Z-axis direction) of the vibration motor 400, ensuring that the vibration of the second vibration component 430 and the vibration of the first vibration component 420 do not interfere with each other.

[0082] The sleeve 413 can be bonded or hot-melt welded to the housing 410. The stopper 440 is further provided with a through hole 440b communicating with the guide hole 440a for the sleeve 413 to pass through, so that the sleeve 413 passes through the through hole 440b and extends into the avoidance space 421a of the first vibration magnet 421.

[0083] It is understandable that a damping structure may also be provided in the vibration motor 400 to dampen and buffer the vibration of the second vibration magnet 431 , thereby preventing the shell 410 from deforming and reducing the noise generated during the vibration process.

[0084] For example, please continue to refer to Figure 8 The second vibration assembly 430 further includes an elastic member 433 and a buffer member 435. One end of the elastic member 433 is connected to the housing 410, and the other end is connected to the second vibration magnet 431. The buffer member 435 is disposed at one end of the sleeve 413 away from the housing 410.

[0085] Exemplarily, the elastic member 433 is preferably a butterfly spring, which has a relatively small overall volume and is suitable for being arranged in the sleeve 413, and can meet the vibration requirements of the second vibration component 430. Exemplarily, the buffer member 435 can be foam.

[0086] The buffer member 435 and the butterfly spring 433 both have elastic force, and together provide a buffering effect for the vibration of the second vibration magnet 431 .

[0087] Since the second vibration component 430 is disposed in the avoidance space 421a, and the design size of the avoidance space 421a is limited, the overall volume of the second vibration component 430 will not be too large, and the volume of the second vibration magnet 431 is designed to be smaller, so the weight of the second vibration magnet 431 is smaller and the vibration tactile sensation it generates is also smaller.

[0088] In order to enhance the vibration sensation of the vibration motor 400 in the second direction, in one embodiment, please continue to refer to Figure 8 The second vibration component 430 also includes a mass block 434 , which is disposed and connected between the elastic member 433 and the second vibration magnetic steel 431 .

[0089] Specifically, one end of the mass block 434 is fixedly connected to the elastic member 433 , and the other end is fixedly connected to the second vibration magnetic steel 431 , so the elastic member 433 is indirectly connected to the second vibration magnetic steel 431 through the mass block 434 .

[0090] By providing the mass block 434, the second vibration magnetic steel 431 and the mass block 434 are connected as a whole. When the second coil 432 is energized, the second coil 432 and the second vibration magnetic steel 431 generate electromagnetic force based on electromagnetic induction. The electromagnetic force drives the whole connected with the second vibration magnetic steel 431 and the mass block 434 to vibrate along the Z-axis direction. The second vibration magnetic steel 431 and the mass block 434 vibrate together, which increases the weight of the vibrator and can improve the vibration touch of the second vibration component 430. At the same time, the provision of the mass block 434 increases the overall weight of the vibration motor 400, so that the vibration of the vibration motor 400 is more stable.

[0091] Optionally, the mass block 434 may be made of a material with a relatively high density, so that it has a relatively high weight in a relatively small volume. For example, the mass block 434 may be made of a tungsten alloy material.

[0092] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0093] The vibration motor and electronic device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A vibration motor, characterized in that: Applied to electronic equipment, the vibration motor comprises: case; A first vibration component is disposed in the housing, and the first vibration component can vibrate along a first direction; The second vibration component is partially disposed in the first vibration component and is spaced apart from the first vibration component. The second vibration component can vibrate along a second direction, wherein the second direction is perpendicular to the first direction.

2. The vibration motor according to claim 1, characterized in that: The first vibration component comprises: a first vibration magnetic steel, movably disposed in the housing, the first vibration magnetic steel being provided with an escape space, the escape space penetrating the first vibration magnetic steel along the second direction; a first coil, fixed to the housing and disposed around the first vibrating magnetic steel, wherein the first coil can generate an electromagnetic force with the first vibrating magnetic steel when energized, so that the first vibrating magnetic steel vibrates along the first direction under the action of the electromagnetic force; Wherein, the second vibration component can be vibratedly arranged in the avoidance space.

3. The vibration motor according to claim 2, characterized in that: The avoidance space is arranged through the middle of the first vibration magnetic steel.

4. The vibration motor according to claim 2, characterized in that: The first vibration magnetic steel comprises a first end and a second end opposite to each other along the first direction; The first vibration assembly also includes: a first fixed magnetic steel, spaced apart at one side of the first end, the first fixed magnetic steel having a third end, the third end being arranged opposite to the first end, and the magnetic pole of the third end having the same polarity as the magnetic pole of the first end; and The second fixed magnetic steel is arranged at a distance on one side of the second end. The second fixed magnetic steel has a fourth end. The fourth end is arranged opposite to the second end, and the magnetic pole of the fourth end has the same polarity as the magnetic pole of the second end.

5. The vibration motor according to claim 2, characterized in that: The vibration motor also includes: A limiting member is arranged in the shell, and the limiting member is provided with a guide hole, and the guide hole penetrates the limiting member along the first direction so that the first vibration magnet can vibrate through the guide hole.

6. The vibration motor according to any one of claims 1 to 5, characterized in that: The second vibration component comprises: A second vibration magnet is movably disposed in the housing; and The second coil is fixed to the shell and arranged around the second vibration magnet. The second coil can generate electromagnetic force with the second vibration magnet when energized, so that the second vibration magnet vibrates along the second direction under the action of the electromagnetic force.

7. The vibration motor according to claim 6, characterized in that: The housing comprises a sleeve, and the sleeve extends along the second direction; The second vibration magnetic steel is arranged in the sleeve and can vibrate along the axial direction of the sleeve under the action of electromagnetic force. The second coil is sleeved on the sleeve.

8. The vibration motor according to claim 6, characterized in that: The second vibration component also includes an elastic member, one end of which is connected to the shell, and the other end of which is connected to the second vibration magnet; the elastic member is a butterfly spring.

9. The vibration motor according to claim 8, characterized in that: The second vibration component also includes a mass block, which is arranged and connected between the elastic member and the second vibration magnetic steel.

10. An electronic device, characterized in that: The invention comprises a housing and a vibration motor as claimed in any one of claims 1 to 9, wherein the vibration motor is arranged in the housing.

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