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Application of rare earth magnetic expansion material on bandset vibration mechanism

A technology of giant magnetostriction and vibration mechanism, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, fluids using vibration, etc., can solve the impact of product consistency and qualification rate, Difficult to achieve and other problems, to achieve the effect of simplifying the design and processing technology of the whole machine, improving performance indicators, and high energy density

Inactive Publication Date: 2005-10-26
程浩川 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is determined by the existing motor structure and its working principle, and it is currently unavoidable
[0005] 2. With the thinning of mobile phones, the thickness of the vibration motor is required to be reduced to 2 mm or even thinner. However, due to the structural limitations of the existing vibration motor, even a chip vibration motor is difficult to achieve less than 3 mm.
[0006] 3. The parts of the existing mobile phone vibration motors are high-precision mechanical parts equivalent to mechanical watches. Need to rely on manual operation, so that the consistency and qualification rate of the product will be affected

Method used

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  • Application of rare earth magnetic expansion material on bandset vibration mechanism
  • Application of rare earth magnetic expansion material on bandset vibration mechanism
  • Application of rare earth magnetic expansion material on bandset vibration mechanism

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1: from figure 1 It can be clearly seen that the mobile phone vibrating mechanism of the present invention is composed of a vibrating element 1 made of rare earth giant magnetostrictive material, a driving coil 2, an alternating circuit 3 and a housing 5 provided with a vibrating element installation cavity 4. The vibrating element 1 is a rare-earth giant magnetostrictive material bar with a diameter of 1-2 mm and a length of 8-10 mm. The externally wound drive coil 2 is composed of enameled wire with turns; the two ends of the drive coil 2 are connected to the The alternating circuit 3 is connected; the vibrating element 1 wound with the driving coil 2 is arranged in the vibrating element installation cavity 4 , and the two ends of the vibrating element 1 are closely matched with the walls of the vibrating element installation cavity 4 .

[0022] The working process is: the vibration mechanism of the mobile phone is directly clamped in the mobile phone shell, a...

Embodiment 2

[0024] Example 2: From figure 2 It can be clearly seen that the basic structure of this embodiment is the same as that of Embodiment 1, and the difference is: in order to adapt to the development trend of thinner and thinner mobile phones, the rare earth giant magnetostrictive material is made into a sheet-shaped vibrating element 1, and its size It is 2×5×1mm, that is, its thickness is only 1mm, the vibrating part 1 is very small, and the driving coil 2 can be conventionally wound, or it can adopt a bodiless, sheet structure, and the formed vibration mechanism is as flat as paper, which can maximize Minimize the casing of the vibrator installation cavity. Its working process is identical with embodiment 1.

Embodiment 3

[0025] Example 3: from image 3 It can be clearly seen that the basic structure of this embodiment is the same as that of Embodiment 1, and the difference is that the vibrating element 1 is a double-laminated structure, that is, it is made of two rare earth giant magnetostrictive material sheets 11 and 12 of the same size and performance. combined. The vibrating mechanism made of the vibrating element 1 with the double lamination structure can effectively reduce the dynamic loss of the material and improve the dynamic response characteristic.

[0026] If the magnetostrictive coefficients of the two rare earth giant magnetostrictive material sheets 11 and 12 selected for use are different; At the same time, a cantilever beam structure is adopted, that is, one end is fixed and the other end is suspended. At this time, when the driving coil is supplied with an alternating current, the laminations will generate bending vibration to change the original vibration perpendicular to ...

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Abstract

An application of the super magnetostrictive RE material in the vibrating mechanism of mobile telephone is disclosed. A vibrator made of said super magnetostrictive RE material is wound by the driving coil and then installed in a cavity. Under the action of electromagnetic field, said RE material can generate microdeformation and sound energy, resulting-in a vibration effect.

Description

【Technical field】 [0001] The invention relates to a mobile phone vibration mechanism, in particular to the application of a rare earth giant magnetostrictive material on the mobile phone vibration mechanism. 【technical background】 [0002] At present, mobile phones are equipped with a vibrating call notification function, which is usually composed of a motor and a counterweight eccentric wheel installed on its rotor shaft. Its working principle is: use the motor rotor to drive the eccentric wheel to rotate, and the load asymmetry caused by the eccentric wheel will generate a mechanical vibration with a certain vibration frequency and amplitude, and then transmit this vibration wave to the mobile phone shell or its surrounding structures , so that the mobile phone shell or the surrounding structure vibrates, and the vibration prompts the incoming call. [0003] In terms of working principle, the existing vibration motor is the same as the general motor, which is based on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/08
Inventor 程浩川胡自强赵栋梁
Owner 程浩川
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