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Micro-driving motor

A technology of miniature drive motor and magnetic conductive parts, applied in electrical components, electromechanical devices, etc., can solve problems such as affecting the linear movement effect and change, and achieve the effect of improving the linear driving effect and improving the use efficiency.

Inactive Publication Date: 2013-09-04
深圳市光控数码光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional micro-drive motors generally include an upper cover, an upper gasket, an upper spring sheet, a lens carrier, a magnet assembly, a coil assembly, a lower gasket, a lower spring sheet assembly, and a base; the traditional upper cover is made of a magnetically conductive material, and the magnet The assembly is located under the top wall of the upper cover, and there is no magnetically conductive material under the magnet assembly, so most of the magnetic force lines of each magnet in the magnet assembly enter the top wall of the upper cover upward after passing through the coil assembly, and return to the magnet from the side wall of the upper cover , forming a closed magnetic circuit; thus, the magnetic force lines of each magnet near the top wall of the upper cover are relatively dense, while the magnetic force lines away from the top wall of the upper cover are relatively sparse, resulting in the coil assembly moving up and down with the carrier. The magnetic field at the place changes, affecting its linear movement effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Figure 1 to Figure 4 A first embodiment of the invention is shown in which, figure 1 It is a schematic diagram of a three-dimensional structure of the first structure of the present invention; figure 2 yes figure 1 A front view of the micro drive motor shown; image 3 yes figure 2 The sectional view of the shown micro drive motor along the A-A line; Figure 4 yes figure 1 An exploded view of the miniature drive motor shown.

[0034] Present embodiment is a kind of miniature drive motor that drives miniature camera lens assembly, see Figure 1 to Figure 4 As shown, it includes an upper cover 1 , an upper gasket 120 , an upper spring piece 2 , a carrier 3 , a coil assembly 4 , a magnet assembly 5 , a lower spring assembly 6 , a magnetic guide 7 and a lower gasket 9 . In this embodiment, the upper cover 1 , the upper gasket 120 , the upper spring piece 2 , and the carrier 3 are all made of non-magnetic materials.

[0035] The upper cover 1 includes a top wall 11...

Embodiment 2

[0047] Figure 5 It is a cross-sectional view of the second structure of the present invention, showing a specific implementation of the second structure of the present invention.

[0048] This embodiment is basically the same as Embodiment 1, the difference is that: the magnetic conduction member 7 in this embodiment is no longer arranged in the cavity of the upper cover 1, and the outer peripheral edge of the magnetic conduction member 7 is fixed on the upper cover side On the bottom surface of the wall 12, thereby blocking on the bottom opening of the cavity surrounded by the side wall 12 of the upper cover, that is, it is used as a bottom cover.

[0049] The lower gasket 9 does not need to be provided with a supporting plate 92 , but only includes a rectangular frame-shaped pressing plate 91 , and the pressing plate 91 crimps and fixes the outer edges of the two lower shrapnels 61 on the magnetically conductive member 7 . Of course, in this embodiment, it is also feasible...

Embodiment 3

[0051] Image 6 with Figure 7 A third embodiment of the invention is shown, in which Image 6 It is a schematic diagram of a three-dimensional structure of the upper cover in the third structure of the present invention; Figure 7 It is a schematic diagram of a three-dimensional structure of the magnetic conducting member in the third structure of the present invention.

[0052] This embodiment is basically the same as Embodiment 1, except that a positioning notch 103 is provided at the bottom of the side wall 12 of the upper cover, and a positioning boss 73 is provided on the outer peripheral edge of the magnetic conduction body 71 of the magnetic conduction member 7 , Each positioning boss 73 is located in a corresponding positioning notch 103 . The magnetic conductive part 7 and the upper cover 1 can be fixedly arranged by gluing or laser welding. Since the position of the magnetic conductive part 7 is relatively stable, the lower gasket 9 does not need to be provided w...

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PUM

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Abstract

The invention discloses a micro-driving motor, which comprises an upper cover, an upper leaf spring, a carrier, a coil assembly, a magnet assembly, a lower spring assembly and a magnetic conduction piece arranged under the magnet assembly, wherein the lower spring assembly comprises two mutually insulated lower spring pieces; each lower spring piece comprises an inner side, an outer side, and a wire spring for connecting the inner side and the outer side; the inner side of each lower spring piece is fixed on a bottom part of the carrier; the outer side of each lower spring piece and the upper cover are relatively still; the coil assembly is arranged on an outer wall of the carrier; the magnet assembly is sheathed on an outer side of the coil assembly, and is located between the upper leaf spring and the lower spring assembly; and one side face of the magnet assembly, close to the coil assembly, and the magnetic conduction piece form a magnetic circuit penetrating through the coil assembly. The micro-driving motor can effectively ensure linear drive effect.

Description

technical field [0001] The invention belongs to the technical field of micro-motor structure design, and in particular relates to a micro-drive motor. Background technique [0002] Micro camera devices have been widely used in mobile phones and notebook computers, and the micro drive motors (also called lens drive motors) therein are getting smaller and smaller. [0003] Traditional micro-drive motors generally include an upper cover, an upper gasket, an upper spring sheet, a lens carrier, a magnet assembly, a coil assembly, a lower gasket, a lower spring sheet assembly, and a base; the traditional upper cover is made of a magnetically conductive material, and the magnet The assembly is located under the top wall of the upper cover, and there is no magnetically conductive material under the magnet assembly, so most of the magnetic force lines of each magnet in the magnet assembly enter the top wall of the upper cover upward after passing through the coil assembly, and return...

Claims

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Application Information

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IPC IPC(8): H02K33/18
Inventor 胡小青
Owner 深圳市光控数码光电有限公司