CN-121978814-A - Driving mechanism

Abstract

A driving mechanism for driving an optical component to move mainly comprises a fixed part, a movable part and a driving component. The movable part is movably connected with the fixed part, wherein the optical component is arranged on the movable part, and the driving component is used for driving the movable part to move relative to the fixed part.

Inventors

• ZHUANG BOXIANG
• Jian Ruida

Assignees

• 艾特电科技股份有限公司

Dates

Publication Date

20260505

Application Date

20251017

Priority Date

20241025

Claims (20)

1. 1. A driving mechanism for driving an optical component to move, wherein the optical component has an optical axis, and the driving mechanism comprises: A fixing part; A movable part movably connected to the fixed part, wherein the optical component is disposed on the movable part, and A driving component for driving the movable part to move relative to the fixed part.
2. 2. The driving mechanism of claim 1, further comprising a circuit assembly disposed between the fixed portion and the movable portion and electrically connected to the driving assembly, wherein the circuit assembly has a circuit board and a first reinforcing member connected to each other, the circuit board is perpendicular to a first axial direction and parallel to a second axial direction, the first axial direction and the second axial direction are perpendicular to the optical axis, and the first reinforcing member has a first section, a second section and a narrow section, wherein the narrow section is connected to the first section and the second section.
3. 3. The driving mechanism as claimed in claim 2, wherein the first reinforcing member is further formed with an opening between the narrow portion and the first and second sections, and a portion of the circuit board is exposed from the opening.
4. 4. The driving mechanism as claimed in claim 3, wherein the fixing portion has a housing and a base fixed to each other, wherein the opening faces the base.
5. 5. The driving mechanism of claim 2, wherein the circuit board and the first reinforcement member are integrally formed, and the first reinforcement member is located on an outer surface of the circuit board.
6. 6. The driving mechanism as claimed in claim 2, wherein the circuit assembly further has a first electronic component disposed on an inner side surface of the circuit board, and the first segment of the first reinforcing component and the first electronic component at least partially overlap in the first axial direction.
7. 7. The drive mechanism of claim 6, wherein the narrow portion and the first electronic component do not overlap each other in the first axial direction.
8. 8. The driving mechanism as claimed in claim 7, wherein the circuit assembly further has a second electronic component disposed on the inner surface of the circuit board, and the narrow portion and the second electronic component do not overlap each other in the first axial direction.
9. 9. The drive mechanism of claim 8, wherein the narrowed portion is located between the first and second electronic components in the second axial direction.
10. 10. The driving mechanism as claimed in claim 8, wherein the circuit component further has a second reinforcing component, the first reinforcing component is sandwiched between the circuit board and the second reinforcing component, and the second reinforcing component and the first electronic component at least partially overlap in the first axial direction.
11. 11. The driving mechanism of claim 10, wherein the thickness of the circuit board is greater than the thickness of the second stiffening member.
12. 12. The drive mechanism of claim 10, wherein the thickness of the second stiffening element is greater than the thickness of the first stiffening element.
13. 13. The driving mechanism of claim 10, wherein the circuit component has a first cross-section perpendicular to the second axis and passing through the first electronic component, the circuit board, the first section of the first reinforcing component and the second reinforcing component, and the first reinforcing component and the second reinforcing component have a first area on the first cross-section.
14. 14. The driving mechanism of claim 13, wherein the circuit component has a second cross-section perpendicular to the second axis and passing through the second electronic component, the circuit board and the second section of the first reinforcing component, and the first reinforcing component has a second area on the second cross-section, wherein the second area is smaller than the first area.
15. 15. The driving mechanism of claim 14, wherein the circuit component has a third cross-section perpendicular to the second axis and passing through the circuit board and the narrow portion of the first stiffening component, and the first stiffening component has a third area on the third cross-section, wherein the third area is smaller than the second area.
16. 16. The driving mechanism as claimed in claim 8, wherein the movable portion comprises a carrier and a frame connected to each other, the carrier is movably disposed in the frame, the frame has a body and a bracket embedded in the body, wherein the body is formed with a first recess and a second recess for accommodating the first electronic component and the second electronic component, respectively.
17. 17. The driving mechanism as claimed in claim 16, wherein the bracket has a first shielding portion, and the first shielding portion and the first electronic component at least partially overlap in the optical axis direction.
18. 18. The driving mechanism as claimed in claim 17, wherein the bracket further has a second shielding portion, the second shielding portion at least partially overlapping the second electronic component in the optical axis direction.
19. 19. The driving mechanism as claimed in claim 18, wherein the bracket further has a third shielding portion, and the third shielding portion at least partially overlaps the first electronic component and the second electronic component in the second axis.
20. 20. The driving mechanism as claimed in claim 19, wherein the bracket further has a fourth shielding portion connected to the first shielding portion and at least partially overlapping the first electronic component in the first axial direction, wherein the fourth shielding portion is inclined with respect to the first axial direction and the optical axis.

Description

Driving mechanism Technical Field The present invention relates to a driving mechanism. More particularly, the present invention relates to a driving mechanism for driving an optical component to move. Background With the development of technology, many electronic devices (such as smart phones or digital cameras) have photographing or video recording functions. The use of these electronic devices is becoming more and more popular and is evolving towards a convenient and light-weight design that provides more options for the user. Some electronic devices with photographing or video recording function are provided with a lens driving module to drive an optical component to move so as to achieve the functions of automatic focusing (Auto Focusing, AF) and optical anti-shake (Optical Image Stabilization, OIS), wherein light can pass through the optical component to be imaged on a photosensitive component. However, how to further achieve miniaturization and improve stability and reliability of the lens driving module has become an important challenge for the research and development in the art. Disclosure of Invention The present invention is directed to a driving mechanism for solving at least one of the above problems. In view of the foregoing conventional problems, an embodiment of the invention provides a driving mechanism for driving an optical component to move, wherein the optical component has an optical axis, and the driving mechanism includes a fixed portion, a movable portion, and a driving component. The movable part is movably connected with the fixed part, wherein the optical component is arranged on the movable part. The driving component is used for driving the movable part to move relative to the fixed part. In an embodiment, the driving mechanism further includes a circuit assembly disposed between the fixed portion and the movable portion and electrically connected to the driving assembly, and the circuit assembly includes a circuit board and a first reinforcing component connected to each other, wherein the circuit board is perpendicular to a first axial direction and parallel to a second axial direction, the first axial direction and the second axial direction are perpendicular to the optical axis, and the first reinforcing component includes a first section, a second section and a narrow section, and the narrow section is connected to the first section and the second section. Drawings Fig. 1 shows an exploded view of a drive mechanism according to an embodiment of the invention. Fig. 2 shows another exploded view of the drive mechanism of fig. 1. Fig. 3 shows a perspective view of the drive mechanism of fig. 1 and 2 after assembly. Fig. 4 shows an exploded view of the drive mechanism of fig. 3 with the housing and base removed. Fig. 5 shows an exploded view of the frame and circuit components of fig. 4. Fig. 6 shows a perspective view of the circuit assembly. Fig. 7 shows an enlarged partial top view of the circuit assembly of fig. 6. Fig. 8 shows a cross-sectional view of a first section of the circuit assembly. Fig. 9 shows a cross-sectional view of a second cross-section of the circuit assembly. Fig. 10 shows a cross-sectional view of a third cross-section of the circuit assembly. Fig. 11 shows an exploded view of the frame. Fig. 12 shows a cross-sectional view of a first electronic component on an inside surface of a circuit board positioned within a first recess of a frame. Fig. 13 shows a cross-sectional view of the frame of fig. 12 with the body removed. Fig. 14 shows another cross-sectional view of the frame of fig. 12 with the body removed. The reference numerals are as follows: 100 drive mechanism B, plastic base B1 rectangular structure B2 retaining wall part B21-open pore C1 coil C2 coil E1 first electronic component E2:second electronic component F, frame F1 first groove F2 second groove FM bracket FM1 first shielding part FM2 second shielding part FM3 third shielding part FM4 fourth shielding part FP body H, shell body K stop member LH carrier M1 magnetic assembly M2 magnetic assembly O: optical axis P: circuit assembly P1 substrate P2: P21 intermediate section PB1: First segment of PB11 PB12: PB13: PB2:second reinforcing component PB10:opening Q magnetic conduction disk R guide rod S reed Detailed Description The driving mechanism of the embodiment of the present invention is described below. However, it will be readily appreciated that the embodiments of the invention provide many suitable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments disclosed are illustrative only, and are not intended to limit the scope of the invention in any way. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be appreciated that terms, such as those defined in commonly used dictiona