Optical anti-vibration module

Abstract

The utility model provides an optical anti-shake module. Comprising a fixed frame, a movable frame, an elastic connecting piece and an image sensor chip, wherein the elastic connecting piece is used for connecting the fixed frame and the movable frame and supporting the movable frame to move relative to the fixed frame; the image sensor chip is fixed on the movable frame and moves along with the movable frame; the optical anti-shake module comprises a fixed frame, a movable frame, a driving assembly for driving the movable frame to move in a plane where the image sensor chip is located, and a damping assembly connected between the fixed frame and the movable frame, the damping assembly comprises a first clamping piece fixed to the fixed frame, a second clamping piece fixed to the movable frame and a damping piece clamped between the first clamping piece and the second clamping piece, and the hardness of the first clamping piece and the hardness of the second clamping piece are larger than the hardness of the damping piece. The optical anti-shake module provided by the utility model can improve the anti-shake performance.

Description

[Technical field]

[0001] The utility model relates to the field of optical camera devices, in particular to an optical anti-shake module. [Background technology]

[0002] In order to obtain clear images, an optical camera device is usually provided with an optical image stabilization module to eliminate the influence of shaking on the imaging.

[0003] The optical image stabilization module of the related art includes a fixed frame, a movable frame movable relative to the fixed frame, and an image sensor chip fixed to the movable frame and moving with the movable frame, so as to achieve the purpose of image stabilization by moving the image sensor chip. In order to achieve better image stabilization performance, damping glue is usually set between the fixed frame and the movable frame to adjust the image stabilization movement damping, so that the image sensor chip can move quickly and stably for image stabilization.

[0004] However, due to the fluidity of the damping glue, the consistency after dispensing molding is poor, and the expected damping effect cannot be well exerted, resulting in poor anti-shake performance.

[0005] Therefore, it is necessary to provide a new optical image stabilization module to solve the above technical problems. [Utility Model Content]

[0006] The purpose of the utility model is to overcome the above technical problems and provide an optical image stabilization module that can improve the anti-shake performance.

[0007] In order to achieve the above-mentioned purpose, the utility model provides an optical image stabilization module, including a fixed frame, a movable frame, an elastic connecting member connecting the fixed frame and the movable frame and supporting the movable frame to move relative to the fixed frame, an image sensor chip fixed to the movable frame and moving with the movable frame, and a driving component driving the movable frame to move within the plane where the image sensor chip is located. The optical image stabilization module also includes a damping component connected between the fixed frame and the movable frame, the damping component includes a first clip fixed to the fixed frame, a second clip fixed to the movable frame, and a damping plate clamped between the first clip and the second clip, the hardness of the first clip and the second clip is greater than the hardness of the damping plate.

[0008] Preferably, the damping sheet is one of a silicone sheet, a rubber sheet and a thermoplastic elastomer sheet.

[0009] Preferably, the first clamping piece and the second clamping piece are stainless steel sheets.

[0010] Preferably, the damping component is in the shape of a cylinder.

[0011] Preferably, the thickness of the damping sheet is greater than the thickness of the first clip and the second clip.

[0012] Preferably, the fixed frame has a receiving space, the fixed frame includes a bottom cover and a shell connected to the bottom cover and forming the receiving space together with the bottom cover, the movable frame and the image sensor chip are received in the receiving space, the shell includes a top wall arranged relative to the bottom cover and a side wall connecting the top wall and the bottom cover, the top wall is provided with a through hole for exposing the image sensor chip, the movable frame includes a bottom plate arranged relative to the bottom cover and two supporting blocks arranged on two opposite sides of the bottom plate, the image sensor chip is fixed to the bottom plate, the elastic connecting member includes a first connecting portion fixed to the bottom plate and arranged around the image sensor chip, two second connecting portions extending from the first connecting portion to the two supporting blocks respectively and fixed to the corresponding supporting blocks respectively, two third connecting portions fixed to the bottom cover and arranged on the other opposite sides of the bottom plate, and elastic arms respectively connecting adjacent second connecting portions and third connecting portions, the elastic arms extending along the side walls.

[0013] Preferably, the damping assembly is arranged between each support block and the top wall, the first clip of each damping assembly is fixed in the corresponding receiving hole formed in the top wall, and the second clip of each damping assembly is fixed in the receiving groove formed in the corresponding support block.

[0014] Preferably, the optical image stabilization module also includes a chip circuit board, which is fixed to the bottom plate and arranged around the image sensor chip. The driving component includes four groups of electromagnetic components, which are arranged at four corners of the side wall. Each group of electromagnetic components includes a first magnetic steel fixed to the top wall, a second magnetic steel fixed to the bottom cover and arranged relative to the first magnetic steel, and a coil component arranged between the first magnetic steel and the second magnetic steel. The first magnetic steel includes a first part and a second part arranged perpendicular to each other, the second magnetic steel includes a third part and a fourth part arranged perpendicular to each other, the first part and the third part are arranged relative to each other, and the second part and the fourth part are arranged relative to each other. The coil component includes a coil circuit board fixed to the chip circuit board and a first coil and a second coil formed on the coil circuit board and arranged perpendicular to each other, the first coil is arranged between the first part and the third part, and the second coil is arranged between the second part and the fourth part.

[0015] In the optical image stabilization module of the utility model, the damping assembly is connected between the fixed frame and the movable frame, and the damping assembly includes a first clip fixed to the fixed frame, a second clip fixed to the movable frame, and a damping sheet sandwiched between the first clip and the second clip, and the hardness of the first clip and the second clip is greater than the hardness of the damping sheet. The damping assembly has a stable and reliable design structure, good consistency, and can better exert the damping effect and improve the anti-shake performance.

Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in the field of the present invention, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of the optical image stabilization module provided by the utility model;

[0018] Figure 2 for Figure 1 A three-dimensional exploded schematic diagram of an optical image stabilization module is shown;

[0019] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of an optical image stabilization module is shown;

[0020] Figure 4 for Figure 1 Another partial cross-sectional structural schematic diagram of the optical image stabilization module is shown. [Specific implementation method]

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field of the utility model without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4As shown, the utility model provides an optical image stabilization module 100, which includes a fixed frame 10, a movable frame 20, an elastic connector 30 connecting the fixed frame 10 and the movable frame 20 and supporting the movable frame 20 to move relative to the fixed frame 10, an image sensor chip 40 fixed to the movable frame 20 and moving with the movable frame 20, a driving component 50 driving the movable frame 20 to move within the plane where the image sensor chip 40 is located, and a damping component 60 connected between the fixed frame 10 and the movable frame 20.

[0023] The damping assembly 60 includes a first clip 61 fixed to the fixed frame 10, a second clip 62 fixed to the movable frame 20, and a damping plate 63 clamped between the first clip 61 and the second clip 62, wherein the hardness of the first clip 61 and the second clip 62 is greater than the hardness of the damping plate 63.

[0024] Alternatively, the damping sheet 63 is one of a silicone sheet, a rubber sheet and a thermoplastic elastomer sheet. The first clamping sheet 61 and the second clamping sheet 62 are stainless steel sheets.

[0025] In this embodiment, the damping component 60 is in the shape of a cylinder. Of course, in other embodiments, the damping component 60 can also be in other three-dimensional shapes according to actual design requirements.

[0026] The thickness of the damping sheet 63 is greater than the thickness of the first clamping sheet 61 and the second clamping sheet 62 .

[0027] In this embodiment, the fixed frame 10 has a receiving space 101, and the fixed frame 10 includes a bottom cover 12 and a shell 11 connected to the bottom cover 12 and forming the receiving space 101 together with the bottom cover 12. The movable frame 20 and the image sensor chip 40 are received in the receiving space 101.

[0028] The housing 11 includes a top wall 111 spaced apart from the bottom cover 12 and a side wall 112 connecting the top wall 111 and the bottom cover 12 . The top wall 111 is provided with a through hole 1111 for exposing the image sensor chip 40 .

[0029] The movable frame 20 includes a bottom plate 21 spaced apart from the bottom cover 12 and two support blocks 22 disposed on two opposite sides of the bottom plate 21 . The image sensor chip 40 is fixed to the bottom plate 21 .

[0030] The elastic connecting member 30 includes a first connecting portion 31 fixed to the base plate 21 and arranged around the image sensor chip 40, two second connecting portions 32 extending from the first connecting portion 31 to the two supporting blocks 22 respectively and fixed to the corresponding supporting blocks 22, two third connecting portions 33 fixed to the bottom cover 12 and arranged on the other opposite sides of the base plate 21, and elastic arms 34 respectively connecting adjacent second connecting portions 32 and third connecting portions 33, and the elastic arms 34 extend along the side wall 112.

[0031] The damping assembly 60 is arranged between each support block 22 and the top wall 111, the first clip 61 of each damping assembly 60 is fixed in the corresponding receiving hole 1112 formed in the top wall 111, and the second clip 62 of each damping assembly 60 is fixed in the receiving groove 221 formed in the corresponding support block 22.

[0032] The optical image stabilization module 100 further includes a chip circuit board 70 . The chip circuit board 70 is fixed to the base plate 21 and is disposed around the image sensor chip 40 .

[0033] The driving component 50 includes four groups of electromagnetic components 501, and the four groups of electromagnetic components 501 are arranged at the four corners of the side wall 112. Each group of electromagnetic components 501 includes a first magnetic steel 51 fixed to the top wall 111, a second magnetic steel 52 fixed to the bottom cover 12 and arranged relatively to the first magnetic steel 51, and a coil component 53 arranged between the first magnetic steel 51 and the second magnetic steel 52.

[0034] The first magnetic steel 51 includes a first portion 511 and a second portion 512 which are perpendicular to each other. The second magnetic steel 52 includes a third portion 521 and a fourth portion 522 which are perpendicular to each other. The first portion 511 and the third portion 521 are relatively spaced apart from each other. The second portion 512 and the fourth portion 522 are relatively spaced apart from each other.

[0035] The coil assembly 53 includes a coil circuit board 531 fixed to the chip circuit board 70 and a first coil 532 and a second coil 533 formed on the coil circuit board 531 and arranged perpendicular to each other, wherein the first coil 532 is arranged between the first part 511 and the third part 521, and the second coil 533 is arranged between the second part 512 and the fourth part 522.

[0036] In the optical image stabilization module of the utility model, the damping assembly is connected between the fixed frame and the movable frame, and the damping assembly includes a first clip fixed to the fixed frame, a second clip fixed to the movable frame, and a damping sheet sandwiched between the first clip and the second clip, and the hardness of the first clip and the second clip is greater than the hardness of the damping sheet. The damping assembly has a stable and reliable design structure, good consistency, and can better exert the damping effect and improve the anti-shake performance.

[0037] It should be noted that the above-mentioned “fixed on” includes a direct fixing method and an indirect fixing method with an intermediate medium.

[0038] The above is only an implementation method of the present invention. It should be pointed out that ordinary technicians in the field of the present invention can make improvements without departing from the creative concept of the present invention, but these all fall within the scope of protection of the present invention.

Claims

1. An optical image stabilization module, comprising a fixed frame, a movable frame, an elastic connector connecting the fixed frame and the movable frame and supporting the movable frame to move relative to the fixed frame, an image sensor chip fixed to the movable frame and moving with the movable frame, and a driving component driving the movable frame to move within the plane where the image sensor chip is located, characterized in that: The optical image stabilization module also includes a damping assembly connected between the fixed frame and the movable frame, the damping assembly includes a first clip fixed to the fixed frame, a second clip fixed to the movable frame, and a damping plate clamped between the first clip and the second clip, the hardness of the first clip and the second clip is greater than the hardness of the damping plate.

2. The optical image stabilization module according to claim 1, characterized in that: The damping sheet is one of a silicone sheet, a rubber sheet and a thermoplastic elastomer sheet.

3. The optical image stabilization module according to claim 1, characterized in that: The first clamping piece and the second clamping piece are stainless steel sheets.

4. The optical image stabilization module according to claim 1, characterized in that: The damping component is in the shape of a cylinder.

5. The optical image stabilization module according to claim 1, characterized in that: The thickness of the damping sheet is greater than the thickness of the first clip sheet and the second clip sheet.

6. The optical image stabilization module according to claim 1, characterized in that: The fixed frame has a receiving space, the fixed frame includes a bottom cover and a shell connected to the bottom cover and forming the receiving space together with the bottom cover, the movable frame and the image sensor chip are received in the receiving space, the shell includes a top wall arranged relative to the bottom cover and a side wall connecting the top wall and the bottom cover, the top wall is provided with a through hole for exposing the image sensor chip, the movable frame includes a bottom plate arranged relative to the bottom cover and two supporting blocks arranged at two opposite sides of the bottom plate, the image sensor chip is fixed to the bottom plate, the elastic connecting member includes a first connecting portion fixed to the bottom plate and arranged around the image sensor chip, two second connecting portions extending from the first connecting portion to the two supporting blocks respectively and fixed to the corresponding supporting blocks respectively, two third connecting portions fixed to the bottom cover and arranged at the other opposite sides of the bottom plate, and elastic arms respectively connecting adjacent second connecting portions and third connecting portions, the elastic arms extending along the side walls.

7. The optical image stabilization module according to claim 6, characterized in that: The damping assembly is arranged between each support block and the top wall, the first clip of each damping assembly is fixed in the corresponding receiving hole formed in the top wall, and the second clip of each damping assembly is fixed in the receiving groove formed in the corresponding support block.

8. The optical image stabilization module according to claim 6, characterized in that: The optical image stabilization module also includes a chip circuit board, which is fixed to the bottom plate and arranged around the image sensor chip. The driving component includes four groups of electromagnetic components, which are arranged at four corners of the side wall. Each group of electromagnetic components includes a first magnetic steel fixed to the top wall, a second magnetic steel fixed to the bottom cover and arranged relative to the first magnetic steel, and a coil component arranged between the first magnetic steel and the second magnetic steel. The first magnetic steel includes a first part and a second part arranged perpendicular to each other, and the second magnetic steel includes a third part and a fourth part arranged perpendicular to each other. The first part and the third part are arranged relative to each other, and the second part and the fourth part are arranged relative to each other. The coil component includes a coil circuit board fixed to the chip circuit board and a first coil and a second coil formed on the coil circuit board and arranged perpendicular to each other. The first coil is arranged between the first part and the third part, and the second coil is arranged between the second part and the fourth part.

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