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Driver, camera module, and portable electronic device

A driver and piezoelectric driving technology, applied in the field of drivers, can solve the problems of high power consumption, difficult miniaturization, and complex structure of electromagnetic induction motors, and achieve the effects of improving portability, reducing the loss of driving energy and small size

Inactive Publication Date: 2012-07-11
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, electromagnetic induction motors have disadvantages such as high power consumption, complex structure, and difficulty in miniaturization.

Method used

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  • Driver, camera module, and portable electronic device
  • Driver, camera module, and portable electronic device
  • Driver, camera module, and portable electronic device

Examples

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Embodiment Construction

[0059] The technical solution will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0060] see together Figure 1 to Figure 3 , the driver 100 provided by the first embodiment of the present invention. The driver 100 includes a fixed cylinder 10 , a movable cylinder 20 , a piezoelectric driving component 30 , a preload component 40 , a detection component 50 , a flexible circuit board 60 , and a reinforcing sheet 70 .

[0061] The fixed cylinder 10 is used as the overall support of the driver 100, and is used to accommodate the movable cylinder 20, and cooperate with the movable cylinder 20 to install the piezoelectric drive assembly 30, the preload assembly 40, the detection The component 50 , the flexible circuit board 60 and the reinforcing sheet 70 . The movable barrel 20 is used for accommodating a driven part, such as a lens barrel. The piezoelectric driving assembly 30 is used to drive the movable cylinder 20 to mo...

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Abstract

A driver comprises a fixed tube and a movable tube, a piezoelectric driving component, a flexible circuit board, a reinforcing plate and a prepressing component, wherein the fixed tube as well as the movable is provided with two open ends; the movable tube is movably accommodated in the first accommodating cavity of the fixed tube and is coaxial with the central shaft of the first accommodating cavity; the piezoelectric driving component comprises a piezoelectric element on the side wall of the fixed tube, and a friction element fixed in the movable tube and opposite to the piezoelectric element; the flexible circuit board is arranged on the outer side of the fixed tube and electrically connected with the piezoelectric element; the reinforcing plate encompasses the flexible circuit board and is used for fixing the piezoelectric element on the side wall of the fixed tube; the prepressing component is arranged between the fixed tube and the movable tube, is opposite to the piezoelectric driving component, and enables the friction element and the piezoelectric element to be in contact with each other through exerting precompression on the movable tube; and when deformed after being electrified, the piezoelectric element drives the friction element in virtue of friction to drive the movable tube to move relative to the fixed tube along the center shaft of the fixed tube. The invention further provides a camera module with the driver, and a portable electronic device with the camera module.

Description

technical field [0001] The invention relates to a driver, in particular to a driver with less energy loss and suitable for miniaturization, a camera module with the driver and a portable electronic device with the camera module. Background technique [0002] The rapid development of optoelectronic technology and precision processing technology, as well as the increasing requirements of consumers, have made portable electronic devices such as digital cameras with auto-focus shooting functions, mobile phones or notebook computers more and more popular. [0003] At present, the portable electronic devices with auto-focus shooting function generally use electromagnetic induction motors, such as voice coil motors, stepping motors, and the like. Electromagnetic induction motors have the advantages of large torque and high power, and the overall technology development is relatively mature. However, the electromagnetic induction motor has disadvantages such as high power consumptio...

Claims

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Application Information

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IPC IPC(8): G02B7/04H02N2/02G03B17/12G03B30/00
Inventor 吴定远丘祺纬
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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