Linear vibration motor with iron core and pole pieces with groove on pole piece facing connecting part between magnets

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11949307
APP PUB NO 20220352800A1
SERIAL NO

17542526

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present disclosure discloses a linear motor having a housing with an accommodation space, a vibration unit and a driving unit received in the accommodation. The vibrator unit includes a weight with a receiving space and a magnet unit fixed on the weight and inside the receiving space. The driving unit includes an iron core received in the receiving space, two pole pieces respectively fixed on two opposite ends of the iron core along a vibration direction and a coil wound around the iron core. A groove is provided on the pole piece and faces the magnet unit along a first direction perpendicular with the vibration direction. The distance between the pole piece and the magnet unit increases, effectively decreasing the magnetic attraction force between the pole piece and magnet unit and avoiding the non-linear vibration of the linear vibration motor.

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Patent Owner(s)

  • AAC MICROTECH (CHANGZHOU) CO.,LTD.

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cui, Zhiyong Shenzhen, CN 21 59
Li, Ziang Shenzhen, CN 15 2
Ma, Jie Shenzhen, CN 196 935
Mao, Lubin Shenzhen, CN 145 560

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