Vibration motors and electronics

Abstract

The present application discloses a vibration motor and an electronic device, wherein the vibration motor comprises: a vibrating member, comprising a shell and a rotor, wherein a accommodating chamber is provided in the shell, wherein a magnetic fluid is contained in the accommodating chamber, and the rotor is arranged in the accommodating chamber and connected to the shell; a first coil and a second coil are arranged at intervals in a first direction of the shell, and the rotor is located between the first coil and the second coil, and when the first coil or the second coil is energized, the magnetic fluid can flow along the first direction to drive the rotor to rotate.

Description

Technical Field

[0001] The present application belongs to the field of electronic technology, and specifically relates to a vibration motor and an electronic device. Background Art

[0002] With the development of technology, a variety of portable electronic devices have entered people's lives, such as mobile phones, handheld game consoles, or handheld multimedia entertainment devices. In these portable electronic devices, micro vibration motors are usually used to generate vibrations to feedback system information, such as incoming call notifications.

[0003] Among them, linear motors are becoming increasingly popular in terminal products due to their advantages such as delicate vibration, low noise, strong vibration, and fast response time. In related technologies, the magnetic field generated by the cooperation of coils and permanent magnets drives the vibrator to perform linear reciprocating motion in the vibration space to generate vibration. However, it can only produce vibration in one direction, and the strength of the vibration is closely related to the placement posture of the electronic device. The vibration is weaker in certain postures. For example, the X-direction linear motor set in the current mobile phone cannot produce the vibration of slapping the desktop or thigh when the mobile phone is placed on the desktop or in the pocket, which can easily lead to the omission of important information, such as incoming call notification information. Summary of the Invention

[0004] The present application aims to provide a vibration motor and electronic device to solve the problem in the related art that the linear motor can only generate vibration in one direction, resulting in weak vibration of the electronic device in certain postures.

[0005] In order to solve the above technical problems, this application is implemented as follows:

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

[0007] The vibrating member includes a housing and a rotor, wherein the housing is provided with a receiving chamber, the receiving chamber contains magnetic fluid, and the rotor is arranged in the receiving chamber and connected to the housing;

[0008] The first coil and the second coil are spaced apart in a first direction of the housing, and the rotor is located between the first coil and the second coil. When the first coil or the second coil is energized, the magnetic fluid can flow along the first direction to drive the rotor to rotate.

[0009] A vibration motor proposed in this application also includes:

[0010] The first magnetic yoke and the second magnetic yoke are respectively located on both sides of the rotor. The first coil is wound around the outer side of the first magnetic yoke, and the second coil is wound around the outer side of the second magnetic yoke.

[0011] A vibration motor proposed in this application also includes:

[0012] The rotor is rotatably connected to the housing via the rotating shaft.

[0013] A vibration motor proposed in this application also includes:

[0014] An elastic restoring member is connected to the rotor and the housing, and is used to provide a restoring force for the rotor that is opposite to the rotation direction of the rotor.

[0015] A vibration motor proposed in this application also includes:

[0016] Elastic reset member, the two ends of the rotor in the direction of its rotation axis are respectively connected to the housing through an elastic reset member.

[0017] According to a vibration motor proposed in the present application, the elastic return member includes two leaf springs, both ends of the leaf spring are respectively connected to the rotor and the housing, and the rotor is sandwiched between the two leaf springs.

[0018] According to a vibration motor proposed in this application, the elastic reset member includes a first elastic reset member and a second elastic reset member;

[0019] One end of the first elastic return member is connected to the rotor on a first side of the rotation axis thereof, and the other end of the first elastic return member is connected to the housing on the first side of the rotation axis; one end of the second elastic return member is connected to the rotor on a second side of the rotation axis thereof, and the other end of the second elastic return member is connected to the housing on the second side of the rotation axis;

[0020] The first side and the second side are respectively located on both sides of the rotation axis, the angle between the line connecting the first elastic return member and the connection points between the rotor and the housing and the rotation axis is less than 90°, and the angle between the line connecting the two ends of the second elastic return member and the connection points between the rotor and the housing and the rotation axis is less than 90°.

[0021] According to a vibration motor proposed in the present application, the first elastic reset member and the second elastic reset member are symmetrically arranged with respect to the rotation axis of the rotor.

[0022] According to a vibration motor proposed in the present application, the first coil and the second coil are respectively located on both sides of the rotation axis of the rotor, and the first direction is perpendicular to the direction of the rotation axis.

[0023] According to a vibration motor proposed in the present application, a mass block is provided on the rotor, and the mass block is located on one side of the rotation axis of the rotor.

[0024] According to a vibration motor proposed in this application, a notch is provided on the rotor;

[0025] The notch is located on one side of the rotation axis of the rotor; or, a mass block is further provided on the rotor, and the mass block and the notch are respectively located on two sides of the rotation axis of the rotor.

[0026] According to a vibration motor proposed in the present application, the side wall of the shell is a cylindrical tubular structure, and the first coil and the second coil are respectively arranged in a one-to-one correspondence with the two ends of the shell in the length direction.

[0027] According to a vibration motor proposed in the present application, the number of the vibration parts is two, the shell has a first end and a second end in a first direction, the first ends of the two shells are arranged opposite to each other, the second ends of the two shells are arranged opposite to each other, the first magnetic yoke is connected between the first ends of the two shells, and the second magnetic yoke is connected between the second ends of the two shells.

[0028] In a second aspect, an embodiment of the present application provides an electronic device, including:

[0029] case;

[0030] The vibration motor is any one of the above-mentioned vibration motors, and the vibration motor is arranged in the housing.

[0031] In an embodiment of the present application, a housing is provided with a housing, a rotor and magnetic fluid are disposed within the housing, and a first coil and a second coil are disposed on either side of the rotor. The electromagnetic field generated by energizing the coils drives the magnetic fluid to flow, thereby driving the rotor to rotate. The rotation of the rotor generates forces in the X and Z directions, generating vibrations in both directions. This allows electronic devices equipped with this vibration motor to maintain a good vibration sensation in a wide range of postures.

[0032] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 This is one of the structural schematic diagrams of a vibration motor according to an embodiment of the present application;

[0035] Figure 2 is a schematic diagram of a rotor in a vibration motor according to an embodiment of the present application rotating clockwise;

[0036] Figure 3 is a schematic diagram of a rotor in a vibration motor according to an embodiment of the present application rotating counterclockwise;

[0037] Figure 4 is a schematic cross-sectional view of a vibration motor according to an embodiment of the present application;

[0038] Figure 5 This is a second structural diagram of a vibration motor according to an embodiment of the present application;

[0039] Reference numerals:

[0040] 1. Vibrating member; 11. Housing; 111. Accommodating chamber; 112. Magnetic fluid; 12. Rotor; 120. Rotation axis; 120a. First side; 120b. Second side; 121. Notch; 122. Mass; 21. First coil; 22. Second coil; 31. First magnetic yoke; 32. Second magnetic yoke; 4. Elastic return member; 41. First elastic return member; 42. Second elastic return member; 5. Rotating shaft. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0043] In the description of this application, it should be understood that the terms "length", "left", "right", "inside", "outside", "clockwise", "counterclockwise", "axial", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] The following combination Figure 1-Figure 5 A vibration motor and an electronic device according to embodiments of the present application are described.

[0046] The embodiment of the present application provides a vibration motor, such as Figure 1-Figure 3 As shown, the vibration motor includes a vibrating member 1, a first coil 21 and a second coil 22. The vibrating member 1 includes a housing 11 and a rotor 12. A receiving chamber 111 is provided in the housing 11, and a magnetic fluid 112 is contained in the receiving chamber 111. The rotor 12 is disposed in the receiving chamber 111 and is connected to the housing 11. The first coil 21 and the second coil 22 are spaced apart in a first direction of the housing 11, and the rotor 12 is located between the first coil 21 and the second coil 22. When the first coil 21 or the second coil 22 is energized, the magnetic fluid 112 can flow along the first direction to drive the rotor 12 to rotate.

[0047] Among them, the housing 11 may include a base and a cover, and the base and the cover are sealed and connected to form a accommodating chamber 111. For example, the base is a hollow tubular structure, and the cover is provided at both ends of the base to seal the base. The first coil 21 and the second coil 22 are respectively located on both sides of the rotor 12. In order to allow the magnetic fluid 112 to have sufficient flow space, the accommodating chamber 111 is usually set to a long strip structure, and the first direction is consistent with the length direction of the accommodating chamber 111. The first coil 21 and the second coil 22 are respectively arranged near the two ends of the long strip structure. When in use, the first coil 21 and the second coil 22 are respectively connected to the external circuit.

[0048] like Figure 1-Figure 3 As shown, the first coil 21 is located on the left side of the rotor 12, and the second coil 22 is located on the right side of the rotor 12. When the first coil 21 and the second coil 22 are powered off, the rotor 12 is in Figure 1 Initial position shown.

[0049] See also Figure 2 When the first coil 21 is energized, an electromagnetic field is generated on the left side of the rotor 12. Under the action of the electromagnetic field on the left side, the magnetic fluid 112 gathers toward the left side of the rotor 12. The magnetic fluid 112 on the right side of the rotor 12 impacts the rotor 12 to the left, causing the rotor 12 to rotate clockwise.

[0050] See also Figure 3 When the second coil 22 is energized, an electromagnetic field is generated on the right side of the rotor 12. Under the action of the electromagnetic field on the right side, the magnetic fluid 112 gathers toward the right side of the rotor 12. The magnetic fluid 112 on the left side of the rotor 12 impacts the rotor 12 to the right, causing the rotor 12 to rotate counterclockwise.

[0051] When the first coil 21 and the second coil 22 are energized alternately, the rotor 12 is caused to swing back and forth, thereby generating vibration. Figure 1-Figure 3 When placed in the manner shown, that is, the first direction is consistent with the X direction, the reciprocating swing of the rotor 12 can generate not only vibration in the X direction, but also vibration in the Z direction perpendicular to the X direction.

[0052] The first coil 21 and the second coil 22 can be directly wound around the outside of the housing 11, or the first coil 21 and the second coil 22 can be arranged opposite to the end of the housing 11 in the first direction. Specifically, the housing 11 has a first end and a second end in the first direction. The first coil 21 can be wound around the first end of the housing 11 or opposite to the first end, and the second coil 22 can be wound around the second end of the housing 11 or opposite to the second end. As long as the first coil 21 and the second coil 22 are spaced apart in the first direction of the housing 11 and are located on both sides of the rotor 12, this application does not specifically limit the connection relationship between the first coil 21 and the second coil 22 and the housing 11.

[0053] The vibration motor provided in an embodiment of the present application comprises a housing 11, a housing 11, a rotor 12 and a magnetic fluid 112 disposed within the housing 111, and a first coil 21 and a second coil 22 disposed on either side of the rotor 12. The electromagnetic field generated by energizing the coils drives the magnetic fluid 112 to flow, thereby rotating the rotor 12. The rotation of the rotor 12 generates forces in the X and Z directions, thereby generating vibration sensations in the X and Z directions. This allows electronic devices equipped with the vibration motor to maintain a good vibration sensation in a wide range of postures.

[0054] Optionally, the first coil 21 and the second coil 22 are respectively located on either side of the rotation axis of the rotor 12, and the first direction of the housing 11 is perpendicular to the direction of the rotation axis of the rotor 12. In this way, when the magnetic fluid 112 impacts the rotor 12, the rotor 12 can easily obtain a larger torque, thereby improving the efficiency of force transmission between the magnetic fluid 112 and the rotor 12. Furthermore, the directions of the rotation axis of the rotor 12, the X direction, and the Z direction are mutually orthogonal. This allows the rotor 12 to oscillate back and forth in the positive X direction, thereby obtaining greater X- and Z-direction forces, thereby generating a stronger vibration sensation.

[0055] Based on the above embodiment, the vibration motor provided in the embodiment of the present application further includes a first magnetic yoke 31 and a second magnetic yoke 32. The first magnetic yoke 31 and the second magnetic yoke 32 are respectively located on either side of the rotor 12. The first coil 21 is wound around the outside of the first magnetic yoke 31, and the second coil 22 is wound around the outside of the second magnetic yoke 32. The provision of the first magnetic yoke 31 and the second magnetic yoke 32 enhances the magnetic field generated by the first coil 21 and the second coil 22 when energized.

[0056] Since the first magnetic yoke 31 and the second magnetic yoke 32 generate magnetism only when the corresponding coils are energized, compared with the related art of linear motors in which the permanent magnet is driven to move by energizing the coils, the vibration motor provided in the embodiment of the present application can reduce the impact of the magnetic field on other components of the electronic device.

[0057] The first magnetic yoke 31 may be connected to the end surface of the first end of the housing 11, or may be sleeved outside the first end of the housing 11. The second magnetic yoke 32 may be connected to the end surface of the second end of the housing 11, or may be sleeved outside the second end of the housing 11. As long as the first magnetic yoke 31 and the second magnetic yoke 32 are respectively located on opposite sides of the rotor 12, the relative positions of the first magnetic yoke 31 and the second magnetic yoke 32 and the housing 11 are not specifically limited in this application.

[0058] When the first magnetic yoke 31 and the second magnetic yoke 32 are connected to the end surfaces of the housing 11 respectively, the first magnetic yoke 31 and the second magnetic yoke 32 can be glued and fixed to the end surfaces of the housing 11. Alternatively, the first magnetic yoke 31, the second magnetic yoke 32 and the vibrator 1 are packaged together by a packaging member.

[0059] like Figure 4 As shown, based on any of the above embodiments, the vibration motor provided in the present embodiment further includes an elastic return member 4. The elastic return member 4 connects the rotor 12 and the housing 11 and is used to provide a restoring force to the rotor 12 in the opposite direction of its rotation. When the first coil 21 and the second coil 22 are de-energized, the rotor 12 returns to its initial position under the action of the elastic return member 4.

[0060] See also Figure 2 When the first coil 21 is energized, the rotor 12 rotates clockwise against the elastic force of the elastic reset member 4. When the rotor 12 rotates clockwise by a certain angle, the first coil 21 is de-energized, and the rotor 12 rotates counterclockwise to its initial position under the action of the elastic reset member 4.

[0061] See also Figure 3 When the second coil 22 is energized, the rotor 12 rotates counterclockwise against the elastic force of the elastic reset member 4. When the rotor 12 rotates counterclockwise by a certain angle, the second coil 22 is de-energized, and the rotor 12 rotates clockwise to its initial position under the action of the elastic reset member 4.

[0062] In this embodiment, when the current flowing through the first coil 21 and the second coil 22 is constant, the elastic return member 4 can limit the rotation angle of the rotor 12. When the first coil 21 and the second coil 22 are energized alternately, the rotor 12 will swing back and forth within a certain angle range, generating orderly vibration.

[0063] When both ends of the rotor 12 in the direction of the rotation axis are connected to the housing 11 through the elastic return members 4 , the force applied to the rotor 12 can be more balanced, and the service life of the vibration member 1 can be increased.

[0064] The elastic reset member 4 can be a spring or a leaf spring or other object that can provide elastic restoring force. The leaf spring is a sheet-shaped elastic plate-shaped member, one end of which is fixedly connected to the housing 11 and the other end is fixedly connected to the rotor 12. Figure 1 In the initial position shown, the elastic reset member 4 is in the initial state. When the rotor 12 deflects relative to the initial position, the elastic reset member 4 elastically deforms to apply a pulling force to the rotor 12.

[0065] In some embodiments of the present application, the rotor 12 is connected to the housing 11 at each end along its rotation axis via an elastic return member 4. That is, the rotor 12 is supported within the accommodating chamber 111 by a pair of elastic return members 4. Because the elastic return members 4 have the ability to elastically deform, when the magnetic fluid 112 impacts the rotor 12, the rotor 12 can rotate about the line connecting the two elastic return members 4.

[0066] Specifically, if Figure 4 As shown, the elastic return member 4 includes a first elastic return member 41 and a second elastic return member 42. One end of the first elastic return member 41 is connected to the rotor 12 at a first side 120a of the rotation axis 120, and the other end of the first elastic return member 41 is connected to the housing 11 at the first side 120a of the rotation axis 120. One end of the second elastic return member 42 is connected to the rotor 12 at a second side 120b of the rotation axis 120, and the other end of the second elastic return member 42 is connected to the housing 11 at the second side 120b of the rotation axis 120.

[0067] Among them, the first side 120a and the second side 120b are respectively located on both sides of the rotation axis 120, the angle between the line between the first elastic return member 41 and the connection points between the rotor 12 and the housing 11 and the rotation axis 120 is less than 90°, and the angle between the line between the two ends of the second elastic return member 42 and the connection points between the rotor 12 and the housing 11 and the rotation axis 120 is less than 90°.

[0068] It can be understood that during the rotation of the rotor 12, the angle between the connecting line between the two ends of the first elastic return member 41 and the rotation axis 120 is always less than 90°, and the angle between the connecting line between the two ends of the second elastic return member 42 and the rotation axis 120 is also always less than 90°. The first elastic return member 41 and the second elastic return member 42 located at the same end of the rotor 12 form a relatively stable triangular support structure between the housing 11 and the rotor 12.

[0069] Furthermore, the first elastic return member 41 and the second elastic return member 42 are symmetrically arranged relative to the rotation axis of the rotor 12. As a result, when the rotor 12 deflects to one side, the first elastic return member 41 and the second elastic return member 42 deform to a similar degree. When the coil is deenergized, the first elastic return member 41 and the second elastic return member 42 each exert equal and opposite forces on the rotor 12, allowing the rotor 12 to return to its initial position relatively smoothly.

[0070] In some embodiments of the present application, the elastic return member 4 includes two leaf springs, namely, a first elastic return member 41 and a second elastic return member 42, both of which are leaf springs. The two ends of the leaf spring are respectively connected to the rotor 12 and the housing 11, with the rotor 12 sandwiched between the two leaf springs. Specifically, the rotor 12 has a first side surface and a second side surface facing away from each other, with the first side surface facing the first coil 21 and the second side surface facing the second coil 22. One of the leaf springs connects the first side surface of the rotor 12 to the housing 11, while the other leaf spring connects the second side surface of the rotor 12 to the housing 11.

[0071] In the related technologies of linear motors, the restoring force for the reciprocating motion of the vibrator is provided by a spring. After being squeezed for a long time, the spring is prone to deformation and twisting, resulting in polarization perpendicular to the direction of motor movement, causing the vibrator to collide with other components and generate vibration noise.

[0072] In other embodiments of the present application, the rotor 12 is rotatably connected to the housing 11 via the rotating shaft 5, that is, the rotor 12 is supported within the accommodating chamber 111 via the rotating shaft 5. It will be understood that the rotation axis of the rotor 12 coincides with the axis of the rotating shaft 5 and is fixed relative to the housing 11. Even if the elastic return member 4 is deformed or twisted, the rotor 12 can always rotate around the rotation axis of the rotating shaft 5 without colliding with the housing 11 and generating noise.

[0073] When the rotor 12 is rotatably connected to the housing 11 via the rotating shaft 5, an elastic return member 4 may be provided at one end of the rotor 12 in the direction of the rotation axis, or one elastic return member 4 may be provided at each end of the rotor 12 in the direction of the rotation axis, or an elastic return member 4 may be provided on one or both sides of the rotor 12 in the direction of the rotation axis. In this embodiment, the location of the elastic return member 4 is not specifically limited, as long as it can provide a restoring force to the rotor 12 in the direction opposite to the rotation of the rotor 12.

[0074] In order to facilitate the installation of the rotor 12 and the housing 11, the vibration member 1 provided in the embodiment of the present application also includes a support frame, on which the rotor 12 can be rotatably mounted, and the support frame is fixedly connected to the inner wall of the housing 11. Correspondingly, the elastic return member 4 is connected to the housing 11 through the support frame. When assembling the vibration member 1, the rotor 12 can be first installed on the support frame, and then the elastic return member 4 is set to form a vibration unit, and finally the vibration unit is set in the housing 11. Among them, the support frame can be clamped or welded to the inner wall of the housing 11, or it can be fixedly connected to the housing 11 through other fixing members.

[0075] In some embodiments of the present application, Figure 1 As shown, when rotor 12 is in its initial position, the gap between the outer edge of rotor 12 and the inner wall of housing 11 is minimal, causing rotor 12 to divide accommodating chamber 111 into two chambers, with the two chambers in a semi-enclosed state. At this point, when either coil is energized, magnetic fluid 112 gathers toward that coil, creating a larger contact area with rotor 12. This creates a greater impact force on rotor 12, which helps enhance vibration sensitivity.

[0076] As a specific example, the rotor 12 is a planar plate-shaped structure, and has two parallel and opposite side surfaces. When the rotor 12 is in an initial position, the two side surfaces are perpendicular to the first direction.

[0077] See also Figure 2 When the rotor 12 rotates clockwise from the initial position, the gap between the outer edge of the rotor 12 and the inner wall of the housing 11 gradually increases under the impact of the magnetic fluid 112. Figure 3 When the rotor 12 rotates counterclockwise from the initial position, under the impact of the magnetic fluid 112, the gap between the outer edge of the rotor 12 and the inner wall of the housing 11 gradually increases.

[0078] It should be noted that, in the embodiment of the present application, the initial position of the rotor 12 is not limited to the position described in the above embodiment, and it can be any position that is not parallel to the first direction, as long as the rotor 12 can rotate under the impact of the magnetic fluid 112.

[0079] Optionally, the cross-sectional shape of the accommodating chamber 111 in a first direction perpendicular to the housing 11 is circular, and the outer shape of the rotor 12 may also be circular, and the outer shape of the rotor 12 is adapted to the cross-sectional shape of the accommodating chamber 111 .

[0080] In some embodiments of the present application, Figure 4As shown, the rotor 12 is provided with a mass 122, located to one side of the rotor 12's rotational axis. As the rotor 12 rotates, the mass 122 rotates about the rotor 12's rotational axis. This mass 122 shifts the rotor 12's center of gravity away from its rotational axis, thereby increasing the centrifugal force during the rotor's rotation and enhancing the vibration sensation of the vibration motor. The mass 122 is made of a high-density material, such as tungsten alloy.

[0081] On this basis, the first direction of the housing 11 is perpendicular to the direction of the rotation axis of the rotor 12. This makes the direction of the rotation axis of the rotor 12 orthogonal to the X and Z directions. When the magnetic fluid 112 impacts the rotor 12, the rotor 12 can obtain greater torque, improving energy conversion efficiency and the vibration feel of the motor.

[0082] Optionally, the mass block 122 is located at the edge of the rotor 12 and at the position farthest from the rotation axis of the rotor 12. When the mass of the mass block 122 is constant, the rotor 12 can have a larger eccentricity, which can generate a greater centrifugal force during rotation, thereby making the vibration motor have a stronger vibration feeling. For example, when the vibration motor is as Figure 1-Figure 3 When placed in the manner shown, that is, when the first direction is consistent with the X direction and the mass block 122 is located at the lowermost side of the rotor 12 in the Z direction, the rotor 12 can obtain a greater impact force from the magnetic fluid 112 and a stronger vibration feeling.

[0083] For example, the rotor 12 is circular, with its rotational axis perpendicular to the first direction and passing through the center of the rotor 12. The mass 122 is located on a centerline perpendicular to its rotational axis. This allows for smoother rotor rotation and minimizes the distance between the mass 122 and the rotational axis. It will be appreciated that the line connecting the center of mass of the mass 122 and the center of the circle is perpendicular to the rotational axis.

[0084] In some embodiments of the present application, Figure 4 As shown, the rotor 12 is provided with a notch 121. Notch 121 is located on one side of the rotation axis of the rotor 12. The provision of notch 121 can, on the one hand, deviate the center of the rotor 12 from its rotation axis, thereby increasing the centrifugal force during the rotation of the rotor 12 and enhancing the vibration sensation of the vibration motor. On the other hand, notch 121 facilitates determining the orientation of the rotor 12 during production and installation. When a mass block 122 is provided on the rotor 12, the mass block 122 and notch 121 are respectively located on either side of the rotation axis of the rotor 12.

[0085] In one embodiment of the present application, the sidewall of the housing 11 is a cylindrical tubular structure, and the first coil 21 and the second coil 22 are respectively provided at the two ends of the length direction of the housing 11. The first direction of the housing 11 is the axial direction of the cylindrical tubular structure.

[0086] Optionally, the rotor 12 is a planar plate-like structure, and the rotation axis of the rotor 12 is perpendicular to the axis of the cylindrical tubular structure. When the first coil 21 and the second coil 22 are powered off, the elastic reset member 4 can keep the rotor 12 in a state perpendicular to the axis of the cylindrical tubular structure, that is, the plane where the rotor 12 is located is perpendicular to the axis of the cylindrical structure.

[0087] In another embodiment of the present application, Figure 5 As shown, there are two vibrating members 1. The housing 11 has a first end and a second end in a first direction. The first ends of the two housings 11 are arranged opposite to each other, and the second ends of the two housings 11 are arranged opposite to each other. The first magnetic yoke 31 is connected between the first ends of the two housings 11, and the second magnetic yoke 32 is connected between the second ends of the two housings 11. The first ends of the two housings 11 can be connected directly or through the first magnetic yoke 31. The second ends of the two housings 11 can be connected directly or through the second magnetic yoke 32.

[0088] When the first ends of the two housings 11 and the second ends of the two housings 11 are directly connected, the two vibrating members 1 are combined into a ring structure. One end of the first magnetic yoke 31 is sleeved on the first end of one of the housings 11, and the other end of the first magnetic yoke 31 is sleeved on the first end of the other housing 11. One end of the second magnetic yoke 32 is sleeved on the second end of one of the housings 11, and the other end of the second magnetic yoke 32 is sleeved on the second end of the other housing 11. Optionally, the housings 11 have a semicircular structure in the first direction, and the two ends of the two housings 11 are connected to form a circular ring structure.

[0089] When the first ends of the two housings 11 are connected via the first magnetic yoke 31, and the second ends of the two housings 11 are connected via the second magnetic yoke, the two vibrating members 1, the first magnetic yoke 31, and the second magnetic yoke 32 are connected to form a ring structure. One end of the first magnetic yoke 31 is connected to the first end of one of the housings 11, and the other end of the first magnetic yoke 31 is connected to the first end of the other housing 11. One end of the second magnetic yoke 32 is connected to the first end of one of the housings 11, and the other end of the first magnetic yoke 31 is connected to the first end of the other housing 11.

[0090] When the first coil 21 is energized, the magnetic fluid 112 in both vibrating elements 1 flows toward the first coil 21, thereby simultaneously driving the rotors 12 in both vibrating elements 1 to rotate clockwise. Similarly, when the second coil 22 is energized, the magnetic fluid 112 in both vibrating elements 1 flows toward the second coil 22, thereby simultaneously driving the rotors 12 in both vibrating elements 1 to rotate counterclockwise. By providing two vibrating elements 1, this embodiment increases the vibration output of the vibration motor and enhances the vibration sensation.

[0091] The present application also provides an electronic device, which may be a mobile phone, a tablet computer, a game console, or the like. The electronic device includes a housing and a vibration motor. The vibration motor is any of the above-mentioned embodiments, and the vibration motor is disposed in the housing.

[0092] Throughout this specification, references to terms such as "one embodiment," "some embodiments," or "specific examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. Throughout this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0093] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vibration motor, characterized in that: include: The vibrating member includes a housing and a rotor, wherein the housing is provided with a chamber containing a magnetic fluid, and the rotor is disposed in the chamber and connected to the housing; wherein the rotor is provided with a notch, the notch being located on one side of the rotor's rotation axis; or the rotor is further provided with a mass block, the mass block and the notch being located on either side of the rotor's rotation axis, respectively; The first coil and the second coil are spaced apart in a first direction of the housing, and the rotor is located between the first coil and the second coil. When the first coil or the second coil is energized, the magnetic fluid can flow along the first direction to drive the rotor to rotate.

2. The vibration motor according to claim 1, wherein Also includes: The first magnetic yoke and the second magnetic yoke are respectively located on both sides of the rotor. The first coil is wound around the outer side of the first magnetic yoke, and the second coil is wound around the outer side of the second magnetic yoke.

3. The vibration motor according to claim 1, wherein Also includes: The rotor is rotatably connected to the housing via the rotating shaft.

4. The vibration motor according to claim 3, wherein Also includes: An elastic restoring member is connected to the rotor and the housing, and is used to provide a restoring force for the rotor that is opposite to the rotation direction of the rotor.

5. The vibration motor according to claim 1, wherein Also includes: Elastic reset member, the two ends of the rotor in the direction of its rotation axis are respectively connected to the housing through an elastic reset member.

6. The vibration motor according to claim 4 or 5, characterized in that: The elastic return member includes two leaf springs, two ends of which are respectively connected to the rotor and the housing, and the rotor is sandwiched between the two leaf springs.

7. The vibration motor according to claim 4 or 5, characterized in that: The elastic reset member includes a first elastic reset member and a second elastic reset member; One end of the first elastic return member is connected to the rotor on a first side of the rotation axis thereof, and the other end of the first elastic return member is connected to the housing on the first side of the rotation axis; one end of the second elastic return member is connected to the rotor on a second side of the rotation axis thereof, and the other end of the second elastic return member is connected to the housing on the second side of the rotation axis; The first side and the second side are respectively located on both sides of the rotation axis, the angle between the line connecting the first elastic return member and the connection points between the rotor and the housing and the rotation axis is less than 90°, and the angle between the line connecting the two ends of the second elastic return member and the connection points between the rotor and the housing and the rotation axis is less than 90°.

8. The vibration motor according to claim 7, wherein The first elastic restoring member and the second elastic restoring member are symmetrically arranged relative to the rotation axis of the rotor.

9. The vibration motor according to claim 1, wherein The first coil and the second coil are respectively located on both sides of a rotation axis of the rotor, and the first direction is perpendicular to a direction of the rotation axis.

10. The vibration motor according to claim 1, wherein The side wall of the shell is a cylindrical tubular structure, and the first coil and the second coil are respectively arranged in a one-to-one correspondence with the two ends of the shell in the length direction.

11. The vibration motor according to claim 2, wherein There are two vibrating members, the housing has a first end and a second end in a first direction, the first ends of the two housings are arranged opposite to each other, the second ends of the two housings are arranged opposite to each other, the first magnetic yoke is connected between the first ends of the two housings, and the second magnetic yoke is connected between the second ends of the two housings.

12. An electronic device, characterized in that: include: case; A vibration motor, wherein the vibration motor is the vibration motor according to any one of claims 1 to 11, and the vibration motor is arranged in the housing.

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