Voice coil motor
A technology of voice coil motor and carrier, applied in the direction of electrical components, electromechanical devices, etc., can solve the problems of poor dynamic characteristics of voice coil motors, glue overflow, etc., and achieve the effect of good dynamic characteristics
Inactive Publication Date: 2012-03-14
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology
However, if the glue dispensing process is not properly controlled, or the glue curing process is not complete, it will cause part of the glue to overflow, and then the positioning column of the movable barrel that is not bonded together and the carrier body will be bonded together, eventually causing damage to the coil. When a specific current is applied, the movable barrel cannot move the distance corresponding to the current, that is, the dynamic characteristics of the voice coil motor are poor
Method used
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[0015] Please also refer to figure 1 , figure 2 and image 3 , which is the voice coil motor 10 provided by the embodiment of the present invention. The voice coil motor 10 includes: a casing 20, a fixed assembly 30 with two ends open, a movable assembly 40 movably accommodated in the fixed assembly 30, and two shrapnels respectively located at the two ends of the fixed assembly 30. 50 and a carrier 60 that is integrally connected with the fixing assembly 30 .
[0016] The housing 20 is used to eliminate external electromagnetic interference to the voice coil motor 10 and prevent the electromagnetic interference of the voice coil motor 10 from affecting the operation of its external electronic components. The housing 20 can be made of magnetic shielding materials such as nickel-iron alloy, conductive plastic, surface conductive material, and conductive glass. The housing 20 has a bottom plate 22 , two first side plates 24 disposed on opposite sides of the bottom plate 22 ...
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The invention relates to a voice coil motor, comprising a fixed assembling group, a flexible assembling sleeve contained in the fixed assembling group, a bearing body fixedly connected with the fixed assembling group, and a spring sheet; the flexible assembling sleeve is provided with at least two first positioning columns at the end part close to the bearing body; the spring sheet is provide with a board body with a through hole at the center and further a first positioning hole which is used in match with the first positioning columns and fixedly connected with the first positioning columns; the part of the board body far away from the through hole is fixedly connected with the end part of the fixed assembling group close to the bearing body; the end part of the flexible assembling sleeve close to the bearing body is provided with at least two prepressing columns; the length of the prepressing columns along the direction parallel to the central axis of the flexible assembling sleeveis longer than that of the first positioning columns along the direction parallel to the central axis of the flexible assembling sleeve; and the prepressing columns are contacted with the bearing body in an abutting way.
Description
technical field [0001] The invention relates to a voice coil motor, in particular to a voice coil motor with better dynamic characteristics. Background technique [0002] The voice coil motor has the advantages of small size, low power consumption and low price, and is suitable as an actuator in electronic products (such as digital cameras, mobile phones, digital video cameras, etc.) (see Design of a voice coil motor used in the focusing system of a digital video camera, Magnetics, IEEE Transactions on Volume 41, Issue 10, Oct. 2005 Page(s): 3979-3981). [0003] A common voice coil motor mainly includes a fixed frame with openings at both ends, a movable tube with openings at both ends that is movably installed in the fixed frame, a shrapnel and is used to carry the fixed frame, movable tube and shrapnel. and a carrier fixed to the fixture. The movable barrel is used to install components such as lens barrels or zoom lenses in the lens module. The elastic sheet has a plat...
Claims
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IPC IPC(8): H02K33/18
Inventor 廖家宏
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD