CN-122029483-A - Camera actuator

Abstract

The camera actuator according to the present invention includes a housing including a first wall portion and a second wall portion spaced apart from each other, a moving member having an optical member disposed therein and disposed between the first wall portion and the second wall portion, a guide disposed in the housing and guiding tilting of the moving member, a support unit coupled to the moving member by passing through the guide, a first magnet disposed on the guide, and a second magnet facing the first magnet and disposed on the support unit, wherein the first magnet and the second magnet provide a holding force to the moving member and the support unit due to repulsive force.

Inventors

• Yu Zaiwen
• Jin Guihuan
• LIU ZHENGQI

Assignees

• LG伊诺特有限公司

Dates

Publication Date

20260512

Application Date

20241016

Priority Date

20231017

Claims (10)

1. 1. A camera actuator, comprising: A housing; A moving member in which an optical member is provided, and which is provided in the housing; a guide provided in the housing, contacting the moving member, and guiding tilting of the moving member; A supporting unit passing through the guide and coupled to the moving member; a first magnet disposed on the guide member, and A second magnet facing the first magnet and provided on the supporting unit, Wherein the guide member includes a first protruding portion in contact with the moving member, and The first protrusion of the guide presses the moving member using repulsive force generated by the first magnet and the second magnet.
2. 2. The camera actuator of claim 1, wherein: The guide member includes a partition wall portion provided between the supporting unit and the moving member, and The housing includes a first wall portion and a second wall portion spaced apart from one another.
3. 3. The camera actuator according to claim 2, wherein in the partition wall portion, the first protrusion protrudes toward the moving member from a surface opposite to a surface facing the supporting unit.
4. 4. A camera actuator according to claim 3, wherein the moving member includes a groove portion into which the first protrusion is inserted.
5. 5. A camera actuator according to claim 3, further comprising an elastic member provided to be spaced apart from the supporting unit in the optical axis direction, and coupled to the supporting unit and the guide.
6. 6. The camera actuator of claim 5, wherein the resilient member comprises: a body portion coupled to the guide; A fitting portion provided inside the main body portion and coupled to the supporting unit, and And a connecting portion connecting the main body portion and the fitting portion.
7. 7. The camera actuator according to claim 6, wherein the supporting unit includes a second protrusion protruding from the other surface facing the elastic portion in a direction away from the moving member.
8. 8. The camera actuator of claim 7, wherein the second protrusion is provided to have a step and is connected to the fitting portion.
9. 9. The camera actuator of claim 2, wherein the support unit comprises: a first protruding portion protruding toward the moving member in the optical axis direction, and A second protruding portion provided to be spaced apart from the first protruding portion, Wherein the partition wall portion is provided between the first protruding portion and the second protruding portion.
10. 10. The camera actuator of claim 2, wherein: the first magnet is provided on one surface of the partition wall portion facing the supporting unit; The second magnet is provided on one surface of the supporting unit facing the partition wall portion, and The first magnet and the second magnet overlap in the optical axis direction.

Description

Camera actuator Technical Field The present invention relates to a camera actuator. Background The camera captures images or videos of the object and is installed in a mobile device, a drone, a vehicle, or the like. The camera apparatus or the camera module may have an Image Stabilization (IS) function for compensating or preventing image shake caused by user movement to improve the quality of an image, an Auto Focus (AF) function for adjusting a focal length of a lens by automatically adjusting a distance between an image sensor and the lens, and a zoom function for increasing or decreasing a magnification of an image of a distant object using the zoom lens and capturing the image of the object. However, when the IS function IS performed in the camera module, a collision absorbing structure for suppressing damage to the moving member due to collision IS required, and a structure for easily suppressing the movement radius of the moving member IS required. Disclosure of Invention [ Technical problem ] In order to solve the conventional technical problems described above, the present invention is directed to preventing scrolling generated during driving of an Optical Image Stabilizer (OIS). The objects to be achieved by the present invention are not limited to the above-described objects, and other objects not described above will be clearly understood by those skilled in the art from the following description. [ Technical solution ] In order to achieve the above-described problems, a camera actuator according to an embodiment of the present invention includes a housing, a moving member disposed in the moving member and the moving member disposed in the housing, a guide disposed in the housing, in contact with the moving member, and guiding tilting of the moving member, a support unit passing through the guide and coupled to the moving member, a first magnet disposed on the guide, and a second magnet facing the first magnet and disposed on the support unit, wherein the guide includes a first protrusion contacting the moving member, and the first protrusion of the guide presses the moving member using repulsive force generated by the first magnet and the second magnet. The guide may include a partition wall portion disposed between the supporting unit and the moving member, and the housing may include a first wall portion and a second wall portion spaced apart from each other. In the partition wall portion, the first protrusion may protrude toward the moving member from a surface opposite to a surface facing the supporting unit. The moving member may include a groove portion into which the first protrusion is inserted. The moving member may be inclined about the first protrusion in a first direction or a second direction, the first direction may be a direction from the first wall portion toward the second wall portion, and the second direction may be perpendicular to the optical axis direction and the first direction. The camera actuator may further include an elastic member disposed to be spaced apart from the support unit in the optical axis direction, and coupled to the support unit and the guide. The elastic member may include a body portion coupled to the guide, a fitting portion disposed inside the body portion and coupled to the supporting unit, and a connection portion connecting the body portion and the fitting portion. The connection portion may include a first unit pattern extending from the body portion in a first direction, which is a direction from the first wall portion toward the second wall portion, and a second unit pattern extending in a second direction, which may be perpendicular to the optical axis direction and the first direction. Each of the first unit pattern and the second unit pattern may be arranged along the first direction. The connection portion is provided as a plurality of connection portions, and the connection portions are symmetrical with respect to the fitting portion in a first direction, and the first direction may be a direction from the first wall portion toward the second wall portion. The supporting unit may include a second protrusion protruding from the other surface facing the elastic member in a direction away from the moving member. The second protrusion may be provided to have a step, and connected to the fitting portion. The supporting unit may include a first protruding portion protruding toward the moving member in the optical axis direction, and a second protruding portion provided to be spaced apart from the first protruding portion, wherein the partition wall portion may be provided between the first protruding portion and the second protruding portion. The first magnet may be disposed on one surface of the partition wall portion facing the support unit, the second magnet may be disposed on one surface of the support unit facing the partition wall portion, and the first magnet and the second magnet may overlap in the optical axis direction. A first groove