Aperture assembly, camera module, and electronic device

1 . An aperture assembly, comprising a driving mechanism, a support base, and a plurality of blades, wherein a first light entering hole is disposed on the support base, the plurality of blades are rotatably connected to the support base, the plurality of blades form a light transmission hole, the light transmission hole is in communication with the first light entering hole, and all the plurality of blades are connected to the driving mechanism; and

driven by the driving mechanism, all the plurality of blades are rotatable relative to the support base, to adjust an amount of light entering the light transmission hole;

wherein the aperture assembly further comprises a bracket, a second light entering hole is disposed on the bracket, the first light entering hole is in communication with the second light entering hole, the driving mechanism is connected to the bracket, and all the plurality of blades are connected to the bracket; and

driven by the driving mechanism, the bracket is rotatable relative to the support base, and driven by the bracket, all the plurality of blades are rotatable relative to the support base;

wherein the aperture assembly further comprises a plurality of sliders, and the sliders are connected to the blades in a one-to-one correspondence;

the bracket is rotatably connected to a side of the support base away from a blade, and a slider is sandwiched between the bracket and the support base;

guide posts are disposed on two opposite sides of the slider, a guide groove is disposed on each of the support base and the bracket, and the guide groove is adapted to a guide post;

the guide post located on one side of the support base passes through the guide groove on the support base and is connected to the blade, and the guide post located on another side of the support base passes through the guide groove on the bracket; and

driven by the bracket, the slider is movable relative to the support base, and driven by the slider, the blade is rotatable relative to the support base.

2 . The aperture assembly according to claim 1 , wherein the guide post comprises a first guide post, a second guide post, and a third guide post, and the guide groove comprises a first guide groove, a second guide groove, and a third guide groove; and

the first guide post and the second guide post are disposed on a side of the slider facing the support base, the third guide post is disposed on a side of the slider facing the bracket, the first guide groove and the second guide groove are disposed on the support base, and the third guide groove is disposed on the bracket; and

the first guide post passes through the first guide groove and is movable along the first guide groove, the first guide post is movably connected to the blade, the second guide post is located in the second guide groove and is movable along the second guide groove, and the third guide post is located in the third guide groove and is movable along the third guide groove.

3 . The aperture assembly according to claim 2 , wherein a distance between one end of the third guide groove and an axis of the second light entering hole is less than a distance between another end of the third guide groove and the axis of the second light entering hole, and a plurality of third guide grooves are disposed along a circumferential direction of the second light entering hole in sequence.

4 . The aperture assembly according to claim 2 , wherein the first guide groove and the second guide groove are disposed in parallel, two adjacent first guide grooves are disposed perpendicular to each other, and two adjacent second guide grooves are disposed perpendicular to each other.

5 . The aperture assembly according to claim 2 , wherein a fourth guide groove is disposed on the blade, and the first guide post passes through the first guide groove and the fourth guide groove in sequence.

6 . The aperture assembly according to claim 1 , wherein the driving mechanism comprises an electromagnetic coil and a magnet, and the magnet is disposed on the bracket; and

in a case that the electromagnetic coil is in an energized state, the bracket is rotatable relative to the support base driven by cooperation between the electromagnetic coil and the magnet.

7 . A camera module, comprising a housing, a lens assembly, and an aperture assembly, wherein

the housing is provided with an accommodating space, the accommodating space is provided with an opening, the lens assembly is disposed in the accommodating space and is directly opposite to the opening, and the aperture assembly is disposed between the lens assembly and the opening; and

the aperture assembly comprises a driving mechanism, a support base, and a plurality of blades, wherein

a first light entering hole is disposed on the support base, the plurality of blades are rotatably connected to the support base, the plurality of blades form a light transmission hole, the light transmission hole is in communication with the first light entering hole, and all the plurality of blades are connected to the driving mechanism; and

driven by the driving mechanism, all the plurality of blades are rotatable relative to the support base, to adjust an amount of light entering the light transmission hole;

wherein the aperture assembly further comprises a bracket, a second light entering hole is disposed on the bracket, the first light entering hole is in communication with the second light entering hole, the driving mechanism is connected to the bracket, and all the plurality of blades are connected to the bracket; and

driven by the driving mechanism, the bracket is rotatable relative to the support base, and driven by the bracket, all the plurality of blades are rotatable relative to the support base;

wherein the aperture assembly further comprises a plurality of sliders, and the sliders are connected to the blades in a one-to-one correspondence;

the bracket is rotatably connected to a side of the support base away from a blade, and a slider is sandwiched between the bracket and the support base;

guide posts are disposed on two opposite sides of the slider, a guide groove is disposed on each of the support base and the bracket, and the guide groove is adapted to a guide post;

the guide post located on one side of the support base passes through the guide groove on the support base and is connected to the blade, and the guide post located on another side of the support base passes through the guide groove on the bracket; and

driven by the bracket, the slider is movable relative to the support base, and driven by the slider, the blade is rotatable relative to the support base.

8 . The camera module according to claim 7 , wherein the guide post comprises a first guide post, a second guide post, and a third guide post, and the guide groove comprises a first guide groove, a second guide groove, and a third guide groove; and

the first guide post and the second guide post are disposed on a side of the slider facing the support base, the third guide post is disposed on a side of the slider facing the bracket, the first guide groove and the second guide groove are disposed on the support base, and the third guide groove is disposed on the bracket; and

the first guide post passes through the first guide groove and is movable along the first guide groove, the first guide post is movably connected to the blade, the second guide post is located in the second guide groove and is movable along the second guide groove, and the third guide post is located in the third guide groove and is movable along the third guide groove.

9 . The camera module according to claim 8 , wherein a distance between one end of the third guide groove and an axis of the second light entering hole is less than a distance between another end of the third guide groove and the axis of the second light entering hole, and a plurality of third guide grooves are disposed along a circumferential direction of the second light entering hole in sequence.

10 . The camera module according to claim 8 , wherein the first guide groove and the second guide groove are disposed in parallel, two adjacent first guide grooves are disposed perpendicular to each other, and two adjacent second guide grooves are disposed perpendicular to each other.

11 . The camera module according to claim 8 , wherein a fourth guide groove is disposed on the blade, and the first guide post passes through the first guide groove and the fourth guide groove in sequence.

12 . The camera module according to claim 7 , wherein the driving mechanism comprises an electromagnetic coil and a magnet, and the magnet is disposed on the bracket; and

in a case that the electromagnetic coil is in an energized state, the bracket is rotatable relative to the support base driven by cooperation between the electromagnetic coil and the magnet.