Focusing device

Abstract

A focusing device comprises: a bearing member; the clamping assembly comprises a rotating piece and at least two elastic clamping pieces arranged on the rotating piece in a sliding mode, the rotating piece is rotationally arranged on the bearing piece, and a clamping space used for clamping a to-be-focused lens is formed between the at least two elastic clamping pieces; the pushing assembly is arranged opposite to the bearing piece, and the pushing assembly abuts against the end, away from the clamping space, of each elastic clamping piece; the lifting driving part is arranged on the bearing part, connected with the pushing assembly and used for driving the pushing assembly to move towards the bearing part and pushing the at least two elastic clamping parts to be close to each other, and the moving direction of the pushing assembly is perpendicular to the moving direction of the elastic clamping parts; the rotation driving assembly is arranged on the bearing piece and connected with the rotating piece. The focusing device is simple in focusing operation and high in focusing efficiency, the elastic clamping piece elastically clamps the to-be-focused lens in the whole focusing process, the to-be-focused lens cannot be damaged by clamping or cannot be tightly clamped, the to-be-focused lens can be stably clamped, and the focusing quality is high.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a focusing device. Background Art

[0002] Focusing is a very important process in the production of camera modules. Focusing, also known as focusing or focusing, refers to changing the image distance, that is, changing the distance from the optical center of the lens to be focused to the film plane, so as to obtain a clear image and thus a clear photo.

[0003] The traditional focusing method of the camera module is to clamp the lens to be focused by the clamping claw and drive the lens to be focused to rotate to change the focal length of the lens to be focused to achieve focusing. However, this focusing method is easy to damage the lens to be focused or not clamp the lens to be focused tightly, thus affecting the focusing quality. Utility Model Content

[0004] In view of the above, it is necessary to propose a focusing device to stably clamp the lens to be focused during focusing, thereby improving the focusing quality.

[0005] The embodiment of the present application provides a focusing device for focusing a lens to be focused, comprising: a carrier; a clamping assembly, comprising a rotating member and at least two elastic clamping members slidably arranged on the rotating member, the rotating member being rotatably arranged on the carrier, and a clamping space for clamping the lens to be focused is formed between the at least two elastic clamping members; a pushing assembly, arranged opposite to the carrier, the pushing assembly abutting against one end of each elastic clamping member away from the clamping space; a lifting driving member, arranged on the carrier and connected to the pushing assembly, the lifting driving member driving the pushing assembly to move toward the carrier and push at least two elastic clamping members closer to each other, so that at least two elastic clamping members elastically clamp the lens to be focused, wherein the moving direction of the pushing assembly is perpendicular to the moving direction of the elastic clamping members; a rotating driving assembly, arranged on the carrier and connected to the rotating member, the rotating driving assembly driving the rotating member to drive at least two elastic clamping members to rotate, so as to focus the lens to be focused clamped by the at least two elastic clamping members.

[0006] The above-mentioned focusing device first drives the pushing component to move toward the supporting component through the lifting driving component and pushes at least two elastic clamping components to approach each other, so that the at least two elastic clamping components clamp the lens to be focused, and then drives the rotating component to drive the at least two elastic clamping components to rotate through the rotating driving component, so as to focus the lens to be focused clamped by the at least two elastic clamping components. The focusing operation is simple and efficient. In addition, since the elastic clamping components elastically clamp the lens to be focused during the entire focusing process, the lens to be focused will not be clamped or not clamped tightly, and the lens to be focused can be stably clamped with high focusing quality.

[0007] In some embodiments, the clamping assembly also includes a slide rail fixed to the rotating member, the slide rail extends radially along the rotating member, the elastic clamping member includes a sliding portion, the sliding portion is slidably arranged on the slide rail, and the end of the sliding portion away from the clamping space abuts against the pushing assembly.

[0008] By providing the slide rail, the moving direction of the elastic clamping member can be ensured, thereby preventing the elastic clamping member from being unable to stably clamp the lens to be focused due to deviation during the movement.

[0009] In some embodiments, the elastic clamping member includes a clamping portion and an elastic portion, one end of the clamping portion is connected to the sliding portion, and the other end of the clamping portion is used to clamp the lens to be focused, and the clamping assembly also includes a supporting member provided on the rotating member, the supporting member is arranged opposite to the sliding portion, and the two ends of the elastic portion respectively support the sliding portion and the supporting member, and the elastic portion is used to make the clamping portion move away from one end of the sliding portion and elastically clamp the lens to be focused.

[0010] By providing the elastic part, the clamping part can be away from one end of the sliding part to elastically clamp the lens to be focused, thereby preventing the lens to be focused from being clamped or not clamped tightly; and the clamping part can be reset after focusing to facilitate the subsequent focusing of the lens to be focused.

[0011] In some embodiments, the clamping portion includes a connecting portion and an extending portion, one end of the connecting portion is connected to the sliding portion, the other end of the connecting portion extends away from the sliding portion, one end of the extending portion is connected to an end of the connecting portion away from the sliding portion, the other end of the extending portion extends from the connecting portion to the clamping space, the extending portion is arranged at an obtuse angle to the connecting portion, and the end of the extending portion away from the connecting portion is used to clamp the lens to be focused.

[0012] By setting the clamping part to include a connecting part and an extending part, the problem of field of view obstruction during the focusing process of the lens to be focused can be avoided; and the extending part is set to extend from the connecting part to the clamping space, and the extending part and the connecting part are set at an obtuse angle, which can avoid interference between the extending part and the camera module during the focusing process.

[0013] In some embodiments, the elastic clamping member further includes a buffer portion connected to an end of the clamping portion away from the sliding portion.

[0014] In this way, the elastic clamping member can be prevented from damaging the lens to be focused, and the clamping reliability is higher.

[0015] In some embodiments, the sliding portion has a first inclined surface at one end away from the clamping space, and the pushing assembly includes a clamping member and a pushing member rotatably connected to the clamping member, the clamping member is arranged opposite to the supporting member and connected to the lifting drive member, and the pushing member has a second inclined surface that is adapted to and abuts against the first inclined surface.

[0016] In this way, when the clamping member moves toward the supporting member under the drive of the lifting drive member, the clamping member can drive the second inclined surface of the pushing member to move, and push the first inclined surfaces of the sliding parts of at least two elastic clamping members to move toward the clamping space at the same time, so that at least two elastic clamping members are close to each other and elastically clamp the lens to be focused.

[0017] In some embodiments, the pushing assembly further includes a rotating bearing connected between the pushing member and the pressing member.

[0018] In this way, the rotating bearing can reduce the friction between the pushing member and the pressing member, and can make the pushing member rotate more smoothly relative to the pressing member, making the entire structure compact and small.

[0019] In some embodiments, the clamping assembly further includes a rotary bearing, which is connected between the rotating member and the supporting member, making the entire structure compact and small.

[0020] In this way, the rotary bearing can reduce the friction between the rotating member and the supporting member, and can make the rotating member rotate more smoothly relative to the supporting member.

[0021] In some embodiments, the rotary drive assembly includes a rotary drive member, a rotary wheel and a rotary belt. The rotary drive member is disposed on the carrier and fixedly connected to the rotary wheel. The rotary belt is sleeved on the outer circumference of the rotary wheel and the rotary member.

[0022] In this way, the rotary drive member can drive the rotary wheel to rotate. Since the rotary belt is sleeved on the outer circumference of the rotary wheel and the rotary member, the rotary member will also rotate, thereby driving the lens to be focused clamped by the elastic clamping member to rotate and focus.

[0023] In some embodiments, the rotary drive assembly further comprises a tensioning wheel, which is disposed on the supporting member and located between the rotating member and the rotating wheel, and the rotating belt movably abuts against a side surface of the tensioning wheel.

[0024] In this way, by providing the tensioning wheel, the layout among the rotating member, the rotating wheel and the rotating driving member can be made compact, the space utilization rate is high, and the size of the focusing device is also made smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the three-dimensional structure of a focusing device proposed in one embodiment of the present application.

[0026] Figure 2 yes Figure 1 A partial enlarged view of the focusing device at position II is shown.

[0027] Figure 3 yes Figure 2 A schematic structural diagram of the clamping part in the focusing device shown.

[0028] Figure 4 yes Figure 1 The focusing device shown is a schematic diagram of the cross-sectional structure along line IV-IV.

[0029] Figure 5 yes Figure 1 Schematic diagram of the exploded structure of the focusing device shown.

[0030] Main component symbols

[0031] Focusing device 100

[0032] Carrier 10

[0033] Through hole 12

[0034] Clamping assembly 20

[0035] Rotating member 21

[0036] Elastic clamping member 22

[0037] Clamping space 221

[0038] Sliding portion 222

[0039] Bump 2222

[0040] First slope 2224

[0041] Clamping portion 223

[0042] Connection 2231

[0043] Extension 2232

[0044] Elastic portion 224

[0045] Buffer 225

[0046] Slide 23

[0047] Abutment 24

[0048] Rotary bearing 25

[0049] Push component 30

[0050] Pressing piece 31

[0051] Pusher 32

[0052] Second slope 321

[0053] Rotating bearing 33

[0054] Lifting drive 40

[0055] Rotation drive assembly 50

[0056] Rotating drive member 51

[0057] Rotating wheel 52

[0058] Rotating belt 53

[0059] Tensioner 54 DETAILED DESCRIPTION

[0060] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0061] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0062] See also Figure 1 The embodiment of the present application provides a focusing device 100 for focusing a lens to be focused (not shown). In the present embodiment, the lens to be focused may be a fisheye lens, but is not limited thereto. Specifically, the focusing device 100 includes a carrier 10, a clamping assembly 20, a pushing assembly 30, a lifting driving member 40, and a rotating driving assembly 50.

[0063] The clamping assembly 20 includes a rotating member 21 and at least two elastic clamping members 22 slidably disposed on the rotating member 21. The rotating member 21 is rotatably disposed on the carrier 10. A clamping space 221 for clamping the lens to be focused is formed between the at least two elastic clamping members 22. The pushing assembly 30 is disposed opposite to the carrier 10. The pushing assembly 30 abuts against one end of each elastic clamping member 22 away from the clamping space 221. The lifting driving member 40 is disposed on the carrier 10 and connected to the pushing assembly 30. The lifting driving member 40 drives the pushing assembly 30 to move toward the carrier 10 and pushes at least two elastic clamping members 22 to approach each other, so that the at least two elastic clamping members 22 elastically clamp the lens to be focused, wherein the moving direction of the pushing assembly 30 is perpendicular to the moving direction of the elastic clamping member 22, for example, the pushing assembly 30 moves in the vertical direction and the elastic clamping member 22 moves in the horizontal direction. The rotation driving assembly 50 is disposed on the carrier 10 and connected to the rotating member 21 . The rotation driving assembly 50 drives the rotating member 21 to drive at least two elastic clamping members 22 to rotate, so as to focus the lens to be focused clamped by the at least two elastic clamping members 22 .

[0064] The above-mentioned focusing device 100 first drives the pushing component 30 to move toward the supporting component 10 through the lifting driving component 40 and pushes at least two elastic clamping components 22 to approach each other, so that the at least two elastic clamping components 22 clamp the lens to be focused, and then drives the rotating component 21 through the rotating driving component 50 to drive the at least two elastic clamping components 22 to rotate, so as to focus the lens to be focused clamped by the at least two elastic clamping components 22. The focusing operation is simple and the focusing efficiency is high. In addition, since the elastic clamping components 22 elastically clamp the lens to be focused during the entire focusing process, the lens to be focused will not be clamped or not clamped tightly, and the lens to be focused can be stably clamped with high focusing quality.

[0065] In the present embodiment, the carrier 10 is a roughly plate-like structure, and a through hole 12 is provided on the carrier 10 for placing a camera module (not shown) during focusing. The rotating member 21 is disc-shaped. There are three elastic clamping members 22, which are evenly arranged in a ring shape around the through hole 12 of the rotating member 21. It can be understood that in other embodiments, there can also be two elastic clamping members 22, which are relatively arranged around the through hole 12 of the rotating member 21. It can be understood that in some other embodiments, there can also be four or more elastic clamping members 22, which can be flexibly arranged according to the actual situation to stably clamp the camera module during specific implementation.

[0066] Please also see Figure 2In some embodiments, the clamping assembly 20 further includes a slide rail 23 fixed to the rotating member 21, the slide rail 23 extends radially along the rotating member 21, and the elastic clamping member 22 includes a sliding portion 222, the sliding portion 222 is a block structure, the sliding portion 222 is slidably arranged on the slide rail 23, and one end of the sliding portion 222 away from the clamping space 221 abuts against the pushing assembly 30. In this way, by providing the slide rail 23, the moving direction of the elastic clamping member 22 can be ensured, and the elastic clamping member 22 can be prevented from being unable to stably clamp the lens to be focused due to displacement during the movement process.

[0067] In some embodiments, the elastic clamping member 22 includes a clamping portion 223 and an elastic portion 224, one end of the clamping portion 223 is connected to the sliding portion 222, and the other end of the clamping portion 223 is used to clamp the lens to be focused. The clamping assembly 20 also includes a resisting member 24 provided on the rotating member 21, the resisting member 24 is arranged opposite to the sliding portion 222, and the two ends of the elastic portion 224 respectively resist the sliding portion 222 and the resisting member 24, and the elastic portion 224 is used to make the clamping portion 223 away from one end of the sliding portion 222 to elastically clamp the lens to be focused. In this embodiment, a protrusion 2222 is respectively provided on the opposite sides of the sliding portion 222, the resisting member 24 is two block structures and is respectively arranged opposite to the two protrusions 2222, the resisting member 24 is provided on the side of the protrusion 2222 close to the clamping space 221, and the elastic portion 224 is a spring. By providing the elastic portion 224, the clamping portion 223 can be elastically clamped away from one end of the sliding portion 222 to clamp the lens to be focused, thereby preventing the lens to be focused from being clamped or not clamped tightly; and the clamping portion 223 can be reset after focusing to facilitate subsequent focusing of the lens to be focused.

[0068] Please also see Figure 3 In some embodiments, the clamping portion 223 includes a connecting portion 2231 and an extending portion 2232, the connecting portion 2231 is an L-shaped plate structure, one end of the connecting portion 2231 is connected to the sliding portion 222, the other end of the connecting portion 2231 extends away from the sliding portion 222, one end of the extending portion 2232 is connected to an end of the connecting portion 2231 away from the sliding portion 222, the other end of the extending portion 2232 extends from the connecting portion 2231 to the clamping space 221, the extending portion 2232 is arranged at an obtuse angle to the connecting portion 2231, and the end of the extending portion 2232 away from the connecting portion 2231 is used to clamp the lens to be focused. By configuring the clamping portion 223 to include a connecting portion 2231 and an extending portion 2232, the problem of field of view obstruction during the focusing process of the lens to be focused can be avoided; and the extending portion 2232 is configured to extend from the connecting portion 2231 to the clamping space 221, and an obtuse angle is formed between the extending portion 2232 and the connecting portion 2231, which can avoid interference between the extending portion 2232 and the camera module during the focusing process.

[0069] In some embodiments, the elastic clamp 22 further includes a buffer portion 225, and the buffer portion 225 is connected to one end of the clamp 223 away from the sliding portion 222, that is, the buffer portion 225 is connected to one end of the extension portion 2232 away from the connecting portion 2231. In this way, the elastic clamp 22 can be prevented from clamping the lens to be focused, and the reliability of clamping is high. In this embodiment, the buffer portion 225 is a high-strength rubber block and is embedded in the clamp 223. In some other embodiments, the buffer portion 225 can also be a component with a certain elasticity such as rubber or silicone that can prevent the elastic clamp 22 from clamping the lens to be focused.

[0070] See also Figure 4 and Figure 5 In some embodiments, the sliding portion 222 has a first inclined surface 2224 at one end away from the clamping space 221, and the pushing assembly 30 includes a pressing member 31 and a pushing member 32 rotatably connected to the pressing member 31. The pressing member 31 is an annular structure, and the pressing member 31 is arranged opposite to the carrier 10 and connected to the lifting drive member 40. The pushing member 32 is an annular structure, and the pushing member 32 is arranged opposite to the carrier 10. The pushing member 32 has a second inclined surface 321 that is adapted to and abuts against the first inclined surface 2224. In this way, when the pressing member 31 moves toward the carrier 10 under the drive of the lifting drive member 40, the pressing member 31 can drive the second inclined surface 321 of the pushing member 32 to move, and push the first inclined surfaces 2224 of the sliding portions 222 of at least two elastic clamping members 22 to move toward the clamping space 221 at the same time, so that the at least two elastic clamping members 22 are close to each other and elastically clamp the lens to be focused. In this embodiment, at least two elastic clamping members 22 are located in the annular structure of the clamping member 31, and the lifting drive member 40 can be two lifting cylinders, which are arranged opposite to each other and are respectively connected to the bottom of the clamping member 31. In some other embodiments, the lifting drive member 40 can also be other structures that can achieve lifting. The exemplary examples of this application should not be understood as a limitation on the technical solution.

[0071] In some embodiments, the pushing assembly 30 further includes a rotating bearing 33, which is connected between the pushing member 32 and the pressing member 31. In this way, the rotating bearing 33 can reduce the friction between the pushing member 32 and the pressing member 31, and can make the pushing member 32 rotate more smoothly relative to the pressing member 31, making the entire structure compact and small. In this embodiment, the rotating bearing 33 is a thin-walled bearing.

[0072] In some embodiments, the clamping assembly 20 further includes a rotating bearing 25, which is connected between the rotating member 21 and the carrier 10. In this way, the rotating bearing 25 can reduce the friction between the rotating member 21 and the carrier 10, and can make the rotating member 21 rotate more smoothly relative to the carrier 10, making the entire structure compact and small. In this embodiment, the rotating bearing 25 is a thin-walled bearing.

[0073] In some embodiments, the rotary drive assembly 50 includes a rotary drive member 51, a rotary wheel 52, and a rotary belt 53. The rotary drive member 51 is disposed on the carrier 10 and fixedly connected to the rotary wheel 52. The rotary belt 53 is sleeved on the outer periphery of the rotary wheel 52 and the rotary member 21. In this way, the rotary drive member 51 can drive the rotary wheel 52 to rotate. Since the rotary belt 53 is sleeved on the outer periphery of the rotary wheel 52 and the rotary member 21, the rotary member 21 will also rotate, thereby driving the lens to be focused clamped by the elastic clamp 22 to rotate and focus. In this embodiment, the rotary drive member 51 is a motor.

[0074] In some embodiments, the rotary drive assembly 50 further includes a tension wheel 54, which is disposed on the carrier 10 and between the rotating member 21 and the rotating wheel 52, and the rotating belt 53 movably abuts against the side of the tension wheel 54. In this way, by providing the tension wheel 54, the layout between the rotating member 21, the rotating wheel 52 and the rotary drive member 51 can be made compact, the space utilization rate is high, and the size of the focusing device 100 is also made small.

[0075] The implementation process of the focusing device 100 in this embodiment is as follows:

[0076] Place the camera module at the through hole 12 on the carrier 10, wherein the lens to be focused corresponds to the clamping portion 223;

[0077] The lifting drive member 40 drives the pressing member 31 to move toward the carrier 10. During the movement, the pressing member 31 drives the pushing member 32 to move toward the carrier 10. The second inclined surface 321 of the pushing member 32 pushes the first inclined surfaces 2224 of the sliding portions 222 of the three elastic clamping members 22 to move toward the clamping space 221 at the same time, so that the clamping portions 223 of the three elastic clamping members 22 are close to each other and elastically clamp the lens to be focused.

[0078] The rotating driving member 51 drives the rotating wheel 52 to rotate. Since the rotating belt 53 is sleeved on the outer circumference of the rotating wheel 52 and the rotating member 21, the rotating member 21 will also rotate, thereby driving the lens to be focused clamped by the clamping parts 223 of the three elastic clamping members 22 to rotate and focus.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A focusing device for focusing a lens to be focused, characterized in that: include: bearing member; A clamping assembly, comprising a rotating member and at least two elastic clamping members slidably disposed on the rotating member, wherein the rotating member is rotatably disposed on the bearing member, and a clamping space for clamping the lens to be focused is formed between at least two of the elastic clamping members; A pushing component is arranged opposite to the bearing member, and the pushing component abuts against one end of each elastic clamping member away from the clamping space; a lifting driving member, which is disposed on the bearing member and connected to the pushing assembly, wherein the lifting driving member drives the pushing assembly to move toward the bearing member and pushes at least two of the elastic clamping members to approach each other, so that at least two of the elastic clamping members elastically clamp the lens to be focused, wherein the moving direction of the pushing assembly is perpendicular to the moving direction of the elastic clamping members; The rotary drive assembly is disposed on the carrier and connected to the rotating member. The rotary drive assembly drives the rotating member to drive at least two elastic clamping members to rotate, so as to focus the lens to be focused clamped by the at least two elastic clamping members.

2. The focusing device according to claim 1, characterized in that: The clamping assembly also includes a slide rail fixedly arranged on the rotating member, the slide rail extends radially along the rotating member, the elastic clamping member includes a sliding portion, the sliding portion is slidably arranged on the slide rail, and one end of the sliding portion away from the clamping space abuts against the pushing assembly.

3. The focusing device according to claim 2, characterized in that: The elastic clamping member also includes a clamping portion and an elastic portion, one end of the clamping portion is connected to the sliding portion, and the other end of the clamping portion is used to clamp the lens to be focused. The clamping assembly also includes a supporting member arranged on the rotating member, and the supporting member is arranged opposite to the sliding portion. The two ends of the elastic portion respectively support the sliding portion and the supporting member, and the elastic portion is used to make the clamping portion move away from one end of the sliding portion to elastically clamp the lens to be focused.

4. The focusing device according to claim 3, characterized in that: The clamping portion includes a connecting portion and an extending portion, one end of the connecting portion is connected to the sliding portion, the other end of the connecting portion extends away from the sliding portion, one end of the extending portion is connected to an end of the connecting portion away from the sliding portion, the other end of the extending portion extends from the connecting portion to the clamping space, the extending portion is arranged at an obtuse angle to the connecting portion, and the end of the extending portion away from the connecting portion is used to clamp the lens to be focused.

5. The focusing device according to claim 3, characterized in that: The elastic clamping member further includes a buffer portion connected to an end of the clamping portion away from the sliding portion.

6. The focusing device according to claim 2, characterized in that: The sliding portion has a first inclined surface at one end away from the clamping space, and the pushing assembly includes a clamping member and a pushing member rotatably connected to the clamping member. The clamping member is arranged opposite to the supporting member and connected to the lifting drive member, and the pushing member has a second inclined surface that is adapted to and abuts against the first inclined surface.

7. The focusing device according to claim 6, characterized in that: The pushing component further includes a rotating bearing, and the rotating bearing is connected between the pushing member and the pressing member.

8. The focusing device according to claim 1, characterized in that: The clamping assembly further comprises a rotary bearing connected between the rotating member and the bearing member.

9. The focusing device according to claim 1, characterized in that: The rotary drive assembly comprises a rotary drive member, a rotary wheel and a rotary belt. The rotary drive member is arranged on the carrier and fixedly connected to the rotary wheel. The rotary belt is sleeved on the outer circumference of the rotary wheel and the rotary member.

10. The focusing device according to claim 9, characterized in that: The rotary drive assembly further comprises a tension wheel, which is arranged on the bearing member and located between the rotating member and the rotating wheel, and the rotating belt movably abuts against a side surface of the tension wheel.

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