Patent ID: 8908260

Claim:
A focusing mechanism for focusing a lens module, comprising: a base seat; a movable platform a positioning assembly fixed to the base seat and passing through a substantially center of the movable platform, the positioning assembly being for a lens of the lens module detachably mounting thereon; a support bracket fixed to the movable platform, the support bracket being for a sensor of the lens module detachably mounting thereon; and a plurality of arms, each of the plurality of arms rotatably interconnecting the movable platform and the base seat; wherein each of the plurality of arms comprises a first support member, a second support member, a first connecting member, and a second connecting member; the first support member is slidably connected to the second support member and rotatably connected to the base seat via the first connecting member, and the second support member is rotatably connected to the movable platform via the second connecting member; the plurality of arms comprise six arms, and the six arms have two positioning relationships as follows: (1) The six first connecting members are divided into three groups, each group comprises two first connecting members positioned adjacently, and the three groups of first connecting members are positioned in trisection portions of a circular periphery of the base seat; (2) The six second connecting members are divided into three groups, each group comprises two second connecting members positioned adjacently, the three groups of second connecting members are positioned in trisection portions of a circular periphery of the movable platform; (3) Orthographic projections of the three groups of the second connecting members on the base seat are staggered with the three groups of the first connecting members, and the orthographic projections of the three groups of the second connecting members and the three groups of the first connecting members divide the base seat to six equal portions along a circumference direction of the base seat; the movable platform drives the support bracket rotate relative to the positioning assembly to enable the lens to rotate relative to the sensor via the arms when the focusing mechanism is in use.