A flat linear motor

Abstract

The invention discloses a flat linear motor, which comprises a housing. The housing is internally provided with a stator, a rotor and a single shaft. The single shaft passes through the center of the rotor. The stator comprises a driving coil, wherein the driving coil is wound around the rotor. At least two pairs of magnets are arranged between the stator and the rotor. Each pair of magnets comprise a drive positioning magnet and a positioning magnet, wherein the drive positioning magnet is arranged on the rotor; the drive positioning magnet is arranged opposite to the positioning magnet; and the positioning magnet is fixed corresponding to the housing. When powered on, the driving coil drives the rotor provided with the drive positioning magnet to be in reciprocating rectilinear movement along the single shaft; and meanwhile, the attraction force between the drive positioning magnet and the positioning magnet enables the rotor to keep horizontal in the same horizontal plane. The drive positioning magnet integrates functions of driving the rotor and keeping balance of the rotor, thereby greatly simplifying overall structure of the linear motor, and facilitating reducing the size of the linear motor.

Description

technical field [0001] The invention relates to the technical field of electronic products, in particular to a flat linear motor. Background technique [0002] With the rapid development of portable devices such as smart phones, the requirements for the electrical devices installed in them are getting higher and higher. [0003] In order to achieve the purpose of saving space and improving quality, electronic components are gradually developing in the direction of ultra-small and ultra-thin. As the main implementer of effects such as caller ID and touch feedback, vibrators also put forward higher requirements. Linear vibrating motors have replaced other vibrators because of their strong advantages in the height direction. [0004] There are many linear vibration motors currently used in smartphones, but most of them have the following disadvantages: [0005] (1) The existing linear motor has many components and a complex structure, which leads to a large overall size of th...

AI Technical Summary

Problems solved by technology

[0005] (1) The existing linear motor has many components and a complex structure, which leads to a large overall size of the motor; due to factors such as the battery life of the mobile phone, the internal space is limited, and the accessories in the mobile phone can be small or small, and can be integrated. The vibration motor is also Its dimensions must be controlled, and existing linear motors cannot meet this requirement;

[0006] (2) In order to control the vibration amplitude of the vibrating elements, most of them use mechanical metal springs, which are difficult to process and assemble. It is difficult to maintain the elasticity of the springs, and the defect rate is very high; The spring will produce noise and noise, which will affect the use of the mobile phone;

[0007] (3) In order to control the vibration level and prevent the vibration components from turning over / rotating, most of them use two shafts. It is very difficult to keep the two shafts level. The assembly has high environmental requirements and the yield rate is also very low.

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