Square Z-axis linear vibration motor

Abstract

The utility model discloses a square Z-axis linear vibration motor, which comprises a casing and a lower bracket, an FPC (flexible printed circuit) board is connected above the lower bracket, a coil is connected above the FPC board, the casing is mounted above the lower bracket, a mass block is arranged inside the casing, magnetic steel is connected inside the mass block, the mass block is connected with the casing through a spring, and the spring is connected with the lower bracket. The top end in the machine shell is connected with an upper buffering cushion, and the upper portion of the lower bracket is connected with a lower buffering cushion. The upper cushion pad and the lower cushion pad are used for replacing magnetic liquid of a traditional motor to play a buffering role, and the buffering effect is not easily influenced by temperature, so that the noise of the motor at high temperature is reduced, and the stability of the motor and the upper limit of the use temperature are improved; according to the utility model, the casing is of a square structure, and the mass block can be designed to be heavier than the mass block of a circular motor under the same length, width and height, so that larger vibration quantity is provided.

Description

Technical Field

[0001] The utility model belongs to the technical field of linear vibration motors, and in particular relates to a square Z-axis linear vibration motor. Background Art

[0002] Micro vibration motors are essential components for electronic products such as mobile phones, tablets, and electronic toys, providing tactile feedback to users. As competition in the smartphone market intensifies, phone manufacturers are increasingly focusing on the user's tactile experience. This has led to the emergence of linear vibration motors, which differ from traditional rotor motors.

[0003] Compared to traditional rotor motors, linear motors offer significant advantages in vibration characteristics, response time, lifespan, and noise. They also offer a variety of vibration modes, providing users with rich, diverse, and realistic tactile feedback. Linear vibration motors are categorized as Z-axis vertical vibration linear motors and X-axis horizontal vibration linear motors.

[0004] Currently, single-spring Z-axis linear vibration motors are generally circular, which has low space utilization in the entire machine; magnetic fluid is generally used as a buffering medium, and the buffering effect of the magnetic fluid will be reduced at high temperatures, causing the motor to generate noise. Utility Model Content

[0005] The present invention aims to provide a square Z-axis linear vibration motor to solve the problems mentioned in the background art. The present invention provides a square Z-axis linear vibration motor that reduces noise at high temperatures and improves the stability and upper temperature limit of the motor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a square Z-axis linear vibration motor, comprising a casing and a lower bracket, wherein an FPC board is connected to the top of the lower bracket, a coil is connected to the top of the FPC board, the casing is installed above the lower bracket, a mass block is provided inside the casing, a magnet is connected to the inside of the mass block, the mass block and the casing are connected by a spring, an upper buffer pad is connected to the top of the casing, and a lower buffer pad is connected to the top of the lower bracket.

[0007] Furthermore, the material of the upper buffer pad and the lower buffer pad includes but is not limited to one of foam, rubber or silicone.

[0008] In order to provide a greater vibration amount, the housing is further in a square structure.

[0009] In order to provide positioning for the assembly of the magnetic steel and provide an assembly surface for the spring, a gasket is further connected to the bottom of the mass block.

[0010] In order to avoid the housing and the spring and reduce the noise caused by the mass block contacting the housing and the spring, a step is provided on the upper surface of the mass block. Chamfers are provided on the lower periphery of the mass block.

[0011] In order to guide the magnetic flux lines and thus increase the utilization rate of the magnetic field, a yoke is further provided above the coil.

[0012] In order to increase the driving force and speed up the response time, an iron core is further connected to the lower bracket, and the upper end of the iron core passes through the FPC board, the coil and the yoke iron respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model uses upper and lower buffer pads to replace the magnetic fluid of traditional motors for buffering. The buffering effect is not easily affected by temperature, thereby reducing the noise of the motor at high temperatures, improving the stability of the motor and the upper limit of the operating temperature;

[0015] 2. The housing of the utility model has a square structure. Under the same length, width and height dimensions, the mass block can be designed to be heavier than the mass block of a circular motor, thereby providing a greater vibration amount;

[0016] 3. The upper surface of the mass block of the utility model is provided with a step, and the lower periphery of the mass block is provided with a chamfer. The step is used to avoid the casing, and the chamfer is used to avoid the spring, thereby reducing the noise of the mass block contacting the casing and the mass block contacting the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the utility model;

[0019] Figure 3 Schematic diagram of the structure of the mass block of the utility model;

[0020] In the figure: 1. casing; 2. upper buffer pad; 3. magnet; 4. mass block; 41. step; 5. spring; 6. yoke; 7. FPC board; 8. lower bracket; 9. iron core; 10. coil; 11. lower buffer pad; 12. gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-3 The utility model provides the following technical solutions: a square Z-axis linear vibration motor, comprising a casing 1 and a lower bracket 8, wherein an FPC board 7 is connected to the top of the lower bracket 8, a coil 10 is connected to the top of the FPC board 7, the casing 1 is installed above the lower bracket 8, a mass block 4 is provided inside the casing 1, a magnet 3 is connected to the inside of the mass block 4, the mass block 4 is connected to the casing 1 through a spring 5, an upper buffer pad 2 is connected to the top of the casing 1, a lower buffer pad 11 is connected to the top of the lower bracket 8, and the material of the upper buffer pad 2 and the lower buffer pad 11 is preferably foam.

[0024] By adopting the above technical solution, the utility model uses the upper buffer pad 2 and the lower buffer pad 11 to replace the magnetic fluid of the traditional motor for buffering. The buffering effect is not easily affected by temperature, thereby reducing the noise of the motor at high temperature and improving the stability of the motor and the upper limit of the operating temperature.

[0025] Specifically, the housing 1 has a square structure.

[0026] By adopting the above technical solution, under the same length, width and height dimensions, the mass block 4 can be designed to be heavier than the mass block of a circular motor, thereby providing a greater vibration amount.

[0027] Specifically, a gasket 12 is connected to the bottom of the mass block 4 .

[0028] By adopting the above technical solution, positioning is provided for the assembly of the magnetic steel 3 and an assembly surface is provided for the spring 5.

[0029] Example 2

[0030] The difference between this embodiment and embodiment 1 is that: specifically, a step 41 is provided on the upper surface of the mass block 4, and a chamfer is provided on the lower periphery of the mass block 4.

[0031] By adopting the above technical solution, the step 41 is used to avoid the housing 1, and the chamfer is used to avoid the spring 5, thereby reducing the noise of the mass block 4 contacting the housing 1 and the mass block 4 contacting the spring 5.

[0032] Example 3

[0033] The difference between this embodiment and the first embodiment is that: specifically, a yoke 6 is provided above the coil 10 and the yoke is made of a magnetic conductive material.

[0034] By adopting the above technical solution, the magnetic flux lines are guided, thereby increasing the utilization rate of the magnetic field.

[0035] Specifically, the lower bracket 8 is connected to the iron core 9 , and the upper end of the iron core 9 passes through the FPC board 7 , the coil 10 and the yoke 6 respectively.

[0036] By adopting the above technical solution, the driving force is increased and the response time is accelerated.

[0037] In summary, the utility model uses an upper buffer pad 2 and a lower buffer pad 11 to replace the magnetic fluid of the traditional motor for buffering. The buffering effect is not easily affected by temperature, thereby reducing the noise of the motor at high temperature and improving the stability of the motor and the upper limit of the operating temperature; the housing 1 of the utility model is a square structure. Under the same length, width and height dimensions, the mass block 4 can be designed to be heavier than the mass block of a circular motor, thereby providing a larger amount of vibration; a step 41 is provided on the upper surface of the mass block 4 of the utility model, and a chamfer is provided on the lower periphery of the mass block 4. The step 41 is used to avoid the housing 1, and the chamfer is used to avoid the spring 5, thereby reducing the noise of the mass block 4 contacting the housing 1 and the mass block 4 contacting the spring 5.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A square Z-axis linear vibration motor, characterized by: It includes a casing and a lower bracket, wherein an FPC board is connected to the top of the lower bracket, a coil is connected to the top of the FPC board, the casing is installed above the lower bracket, a mass block is provided inside the casing, a magnet is connected to the inside of the mass block, the mass block and the casing are connected by a spring, an upper buffer pad is connected to the top of the casing, and a lower buffer pad is connected to the top of the lower bracket.

2. The square Z-axis linear vibration motor according to claim 1, characterized in that: The upper buffer pad and the lower buffer pad are made of foam, rubber or silicone.

3. The square Z-axis linear vibration motor according to claim 1, characterized in that: The casing is a square structure.

4. The square Z-axis linear vibration motor according to claim 1, characterized in that: A gasket is connected to the bottom of the mass block.

5. The square Z-axis linear vibration motor according to claim 1, characterized in that: A step is provided on the upper surface of the mass block.

6. The square Z-axis linear vibration motor according to claim 1, characterized in that: The lower periphery of the mass block is provided with a chamfer.

7. The square Z-axis linear vibration motor according to claim 1, characterized in that: A yoke is provided above the coil.

8. The square Z-axis linear vibration motor according to claim 7, characterized in that: The lower bracket is connected to an iron core, and the upper end of the iron core passes through the FPC board, the coil and the yoke iron respectively.

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