Novel button type vibration motor

Abstract

The utility model belongs to the technical field of vibration motors, and discloses a novel button type vibration motor comprising a housing; the iron core is arranged in the shell; the coil is wound on the iron core and is matched with the iron core to generate an alternating magnetic field; the cover plate is positioned at the top of the shell and is hermetically connected with the shell; the elastic sheet is positioned below the cover plate and is connected with the magnetic sheet; the magnetic sheet is driven by the alternating magnetic field generated by the coil to reciprocate up and down; a coil holder supporting the coil and ensuring the correct position thereof; according to the utility model, the buffer pad is arranged between the magnetic sheet and the coil holder, so that the vibration energy generated when the magnetic sheet moves is effectively absorbed, and the operation noise is obviously reduced. The chopping controller is adopted to adjust the on-off of the current input to the coil, so that the vibration intensity and frequency of the vibration motor can be flexibly controlled. Through the compact design, the overall size is greatly reduced, the weight is reduced, and assembling is convenient.

Description

Technical Field

[0001] This disclosure relates to the field of vibration motor technology, and in particular to a novel button-type vibration motor. Background Technology

[0002] Traditional vibratory motors typically employ electromagnetic drive principles, using a magnetic field generated by coils to drive the movement of magnetic components, thereby producing vibration. However, traditional vibratory motors suffer from the following problems:

[0003] To ensure sufficient vibration intensity, traditional motors often require a large size, which limits their application in miniaturized, portable devices. The rapid reciprocating motion of magnetic components easily generates noticeable mechanical noise, affecting the user experience. Most traditional motors can only provide a fixed vibration frequency and intensity, and cannot be flexibly adjusted according to actual needs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of button-type vibration motor, which aims to solve the problems in the background art.

[0005] To achieve the aforementioned objectives, the first aspect of this utility model provides a novel button-type vibration motor, comprising:

[0006] shell;

[0007] The iron core is installed inside the outer casing;

[0008] A coil is wound around the iron core and cooperates with the iron core to generate an alternating magnetic field;

[0009] A cover plate is located on top of the housing and is sealed to it;

[0010] A spring clip is located below the cover plate and connected to the magnetic sheet;

[0011] The magnetic sheet is driven to move up and down reciprocally by the alternating magnetic field generated by the coil.

[0012] The coil support supports the coil and ensures its correct position.

[0013] Optionally, the spring is pre-loaded with the magnetic sheet, and the up-and-down movement of the magnetic sheet is controlled by elastic deformation.

[0014] Optionally, the cover plate and the outer shell are connected by ultrasonic welding to ensure sealing and structural integrity.

[0015] Optionally, the motor can adjust the vibration intensity and frequency by controlling the input current through chopping to achieve diverse operating modes.

[0016] Optionally, it also includes a buffer pad disposed between the magnet and the wire frame to absorb vibration energy and reduce noise.

[0017] Optionally, the cushioning pad is made of a material that effectively absorbs vibration and reduces operating noise. Beneficial effects

[0018] 1. This utility model discloses a novel button-type vibration motor. By placing a buffer pad between the magnetic sheet and the coil frame, it effectively absorbs the vibration energy generated during the movement of the magnetic sheet, significantly reducing operating noise. This not only improves the product's quietness but also reduces auditory fatigue caused to users during prolonged use, enhancing the overall user experience. A chopper controller is used to regulate the current input to the coil, allowing flexible control of the vibration intensity and frequency of the motor. This means users can select appropriate vibration modes, such as gentle reminders or strong vibrations, according to different application scenarios or personal preferences, enhancing the product's practicality and interactivity. The compact design significantly reduces the overall size and weight, facilitating assembly and making it particularly suitable for use in miniaturized, portable electronic devices such as smartphones, smartwatches, and headphones. Simultaneously, its lightweight nature reduces its impact on the overall weight of the device, improving user comfort.

[0019] 2. This utility model discloses a novel button-type vibratory motor, which uses ultrasonic welding technology to connect the cover plate and the outer shell. This not only ensures good sealing performance, preventing the ingress of external dust and moisture, but also improves structural stability. This design extends the motor's service life, ensures stable operation under various environmental conditions, and reduces maintenance costs.

[0020] The operating principle of this motor is consistent with that of a permanent magnet motor, employing a controllable alternating magnetic field to drive a fixed magnetic field (magnet). Diverse operating modes and intensities are achieved through controlled chopper operation, and a suitable assembly structure ensures reliable operation, meeting the practical requirements of ultra-long lifespan and quiet operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a novel button-type vibration motor provided in an exemplary embodiment of the present disclosure;

[0022] Figure 2 This is a schematic cross-sectional view of a novel button-type vibration motor provided in an exemplary embodiment of this disclosure;

[0023] Figure 3 This is a schematic diagram of the structure of a novel button-type vibration motor spring provided by an exemplary embodiment of the present disclosure.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Outer shell; 2. Iron core; 3. Coil; 4. Cover plate; 5. Spring; 6. Magnetic sheet; 7. Buffer pad; 8. Wire frame.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Reference Figures 1-3 This utility model provides an embodiment of a novel button-type vibration motor, comprising:

[0032] Outer shell 1;

[0033] Iron core 2 is installed inside the outer casing 1;

[0034] Coil 3 is wound on the iron core 2 and cooperates with the iron core 2 to generate an alternating magnetic field;

[0035] Cover plate 4 is located on top of the outer casing 1 and is sealed to it;

[0036] The spring piece 5 is located below the cover plate 4 and is connected to the magnetic piece 6;

[0037] The magnetic sheet 6 is driven to move up and down reciprocally by the alternating magnetic field generated by the coil 3;

[0038] The coil frame 8 supports the coil 3 and ensures its correct position.

[0039] The spring plate 5 is pre-loaded with the magnetic plate 6, and the up-and-down movement of the magnetic plate 6 is controlled by elastic deformation. The cover plate 4 is connected to the outer shell 1 by ultrasonic welding to ensure sealing and structural integrity.

[0040] It should be noted that the outer casing 1 is typically made of durable materials, such as plastic or metal. Its design must consider the installation of internal components and overall sealing performance to prevent the ingress of external dust or moisture. The iron core 2, located inside the outer casing 1, is the core of the electromagnetic system. It is constructed of a high-permeability material, such as silicon steel sheets, to effectively guide the magnetic field and reduce energy loss. The iron core 2 is designed to withstand the heat generated by the coil 3 and to fit tightly with the coil 3 to optimize the magnetic field strength. The coil 3 is wound around the iron core 2 and generates an alternating magnetic field when current flows through it. The coil 3 is typically made of insulated copper wire, and its number of turns, diameter, and material selection depend on the required operating frequency and magnetic field strength. To ensure the stability of the coil 3, a wire frame 8 is used to support it.

[0041] Furthermore, a cover plate 4 is installed on top of the outer casing 1 to seal the casing 1 and maintain the seal of the internal environment. To ensure good sealing and structural integrity, the cover plate 4 is connected to the outer casing 1 using ultrasonic welding technology. This connection method not only guarantees the sealing effect but also simplifies the assembly process. A spring plate 5 is located below the cover plate 4 and is directly or indirectly connected to the magnetic plate 6. The function of the spring plate 5 is to provide pre-pressure to the magnetic plate 6 when not in operation and to control the up-and-down movement of the magnetic plate 6 through its own elastic deformation during operation. Selecting a suitable material for the spring plate 5 and designing a reasonable shape are crucial for achieving smooth movement.

[0042] Driven by the alternating magnetic field generated by the coil 3, the magnetic sheet 6 can reciprocate in the vertical direction. The magnetic sheet 6 should be made of a material with high remanence and low coercivity to ensure a sensitive response to the alternating magnetic field. The connection between the magnetic sheet 6 and the spring sheet 5 can be direct bonding or other fixing methods. The wire frame 8 supports the coil 3, ensuring its correct position, and also provides some vibration damping. The design of the wire frame 8 must consider compatibility with the housing 1 and other components to ensure the stability of the entire system.

[0043] When alternating current is applied to coil 3, the alternating magnetic field generated in coil 3 periodically attracts and repels magnetic piece 6, causing magnetic piece 6 to reciprocate in the vertical direction. Since magnetic piece 6 is connected to spring piece 5, the elastic properties of spring piece 5 make the movement of magnetic piece 6 smoother, reducing unnecessary vibration and noise. Furthermore, by controlling the input current flow through chopper control, the operating mode of the vibration motor, including vibration intensity and frequency, can be flexibly adjusted to adapt to different application scenarios.

[0044] The motor adjusts the vibration intensity and frequency by controlling the input current through chopper control, thus achieving diverse operating modes.

[0045] It also includes a buffer pad 7, which is disposed between the magnetic sheet 6 and the wire frame 8 to absorb vibration energy and reduce noise. The buffer pad 7 is made of a material that effectively absorbs vibration and reduces operating noise.

[0046] It should be noted that the buffer pad 7 is placed between the magnetic sheet 6 and the wire frame 8, and its main function is to absorb vibration energy and reduce operating noise. The buffer pad 7 should be made of materials with good vibration absorption properties, such as rubber or silicone, to achieve the best noise reduction effect.

[0047] Among them, the buffer pad 7 has multiple small-area contact points to distribute the pressure, and the taper of the cone on the buffer pad 7 makes the buffering force increase from small to large.

[0048] In practical applications, when the user starts the device, the power supply begins to provide alternating current to coil 3. This alternating current can be adjusted by a chopper controller to change the on / off frequency and amplitude of the current. By adjusting the on / off current input to coil 3, the chopper controller can flexibly control the vibration intensity and frequency of the vibratory motor, thus adapting to different application scenarios or user needs. After receiving the alternating current, coil 3 generates an alternating magnetic field around the iron core 2. The direction of this alternating magnetic field changes with the direction of the current, forming a periodic magnetic force change. The magnetic plate 6 located below the cover plate 4 is subjected to the alternating magnetic field and will produce a reciprocating up-and-down motion. Since the magnetic plate 6 is connected to the spring plate 5, the elastic deformation characteristics of the spring plate 5 allow the magnetic plate 6 to move smoothly in the vertical direction while maintaining a certain preload. The motion frequency of the magnetic plate 6 directly depends on the frequency of the current in coil 3, while the motion amplitude is determined by the intensity of the current. Therefore, by adjusting the chopper controller, the motion parameters of the magnetic plate 6 can be precisely controlled to achieve vibration effects of different intensities and frequencies. The up-and-down movement of the magnetic plate 6 is transmitted to the entire motor structure via the spring plate 5, thereby causing slight vibrations in the housing 1 and its internal components. This vibration is designed to be transmitted to external devices or users for reminders, feedback, or other interactive functions.

[0049] To reduce the noise generated when the magnetic sheet 6 moves, a buffer pad 7 is placed between the magnetic sheet 6 and the wire frame 8. When the magnetic sheet 6 moves upward and comes into contact with the buffer pad 7, the buffer pad 7 can effectively absorb some of the vibration energy and reduce the noise level.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A novel button-type vibration motor, characterized in that, include: Outer shell (1); Iron core (2) is installed inside the outer casing (1); A coil (3) is wound on the iron core (2) and cooperates with the iron core (2) to generate an alternating magnetic field; A cover plate (4) is located on top of the outer casing (1) and is sealed to it; A spring sheet (5) is located below the cover plate (4) and connected to the magnetic sheet; The magnetic sheet (6) is driven to move up and down reciprocally by the alternating magnetic field generated by the coil (3); The wire frame (8) supports the coil (3) and ensures its correct position.

2. The novel button-type vibration motor according to claim 1, characterized in that, The spring (5) is pre-loaded with the magnetic sheet (6), and the up-and-down movement of the magnetic sheet is controlled by elastic deformation.

3. A novel button-type vibration motor according to claim 1, characterized in that, The cover plate (4) and the outer shell (1) are connected by ultrasonic welding.

4. A novel button-type vibratory motor according to claim 1, characterized in that, The motor adjusts the vibration intensity and frequency by controlling the on / off state of the input current through chopping.

5. A novel button-type vibratory motor according to claim 1, characterized in that, It also includes a buffer pad (7), which is disposed between the magnetic sheet (6) and the wire frame (8) to absorb vibration energy and reduce noise.

6. A novel button-type vibratory motor according to claim 5, characterized in that, The buffer pad (7) is made of a material that effectively absorbs vibration and reduces operating noise.

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