CN219370099U - Locking drive limit structure, lens driving mechanism and image pickup device - Google Patents
Locking drive limit structure, lens driving mechanism and image pickup device Download PDFInfo
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- CN219370099U CN219370099U CN202320132265.1U CN202320132265U CN219370099U CN 219370099 U CN219370099 U CN 219370099U CN 202320132265 U CN202320132265 U CN 202320132265U CN 219370099 U CN219370099 U CN 219370099U
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Abstract
The utility model belongs to the technical field of lens driving, and particularly relates to a locking driving limiting structure, a lens driving mechanism and an image pickup device. It solves the defects of unreasonable design in the prior art. The locking driving limiting structure comprises a locking driving frame connected with an elastic sheet and axially moving on an optical axis, and limiting pieces which are distributed at intervals with the locking driving frame and used for preventing the locking driving frame from excessively moving towards the incident light direction of the optical axis when the locking driving frame is in an unlocking state. The application has the advantages that: the limiting piece is used for preventing the return stroke of the locking driving frame so as to prevent the locking driving frame from excessively moving towards the direction of the incident light of the optical axis, thereby playing the role of protecting the elastic sheet and prolonging the service life.
Description
Technical Field
The utility model belongs to the technical field of lens driving, and particularly relates to a locking driving limiting structure, a lens driving mechanism and an image pickup device.
Background
Focusing movement can improve the imaging accuracy.
The focusing movement generally adopts a driving mode including a piezoelectric mode, an electromagnetic coil mode and a mechanical driving mode, the carrier carrying the lens moves in the optical axis direction, and after the focusing movement is in place, the carrier is locked so that the lens can be stably fixed. For example, chinese patent No. 202022018743.5 discloses a camera module and digital equipment thereof, the camera module includes: a moving unit, a base and at least one locking structure; the mobile unit comprises a lens module, and is suitable for driving the lens module to move along the optical axis direction; the base is suitable for bearing the mobile unit; the locking structure comprises a shape memory alloy part and a locking part, wherein the shape memory alloy part is suitable for driving the locking part to move so as to lock or release the mobile unit. The camera module and the digital equipment provided by the scheme solve the locking problem when the long-stroke camera module does not work.
Although the above scheme has the advantages, the lock in the scheme lacks limit to elastic recovery when the lock is elastically recovered, so that abnormal elastic deformation of the lock structure is easily caused, and finally the lock is invalid.
Disclosure of Invention
The present utility model has been made in view of the above problems, and an object of the present utility model is to provide a lock drive limit structure, a lens drive mechanism, and an imaging apparatus that can solve the above problems.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the locking driving limiting structure comprises a locking driving frame connected with an elastic sheet and axially moving on an optical axis, and limiting pieces which are distributed at intervals with the locking driving frame and used for preventing the locking driving frame from excessively moving towards the incident light direction of the optical axis when the locking driving frame is in an unlocking state.
In the above locking driving limiting structure, the limiting member and the locking driving frame are distributed in sequence from the incident light direction to the emergent light direction on the optical axis.
In the above locking driving limiting structure, the limiting member includes at least two limiting columns corresponding to at least two opposite sides of the locking driving frame at intervals, and when the limiting columns are in contact with the locking driving frame, the locking driving frame cannot move towards the incident light direction of the optical axis.
In the locking driving limiting structure, the limiting piece further comprises an annular frame, and the limiting column is fixed on the annular frame.
In the above locking driving limiting structure, the annular frame and the locking driving frame are parallel to each other, and the limiting column is fixed on a surface of the annular frame, which is close to the locking driving frame.
In the above locking driving limiting structure, four limiting columns are arranged on the annular frame, and the four limiting columns are corresponding to each side edge of the locking driving frame at intervals.
In the locking driving limiting structure, the limiting piece is fixed on the driving magnet of the base; or the limiting piece is fixed on the boss of the base.
In the locking driving limiting structure, the locking driving frame is sleeved on the periphery of the driving magnet which surrounds to form a circle, and the limiting column of the limiting piece is located on the outer side of the outer vertical face of the driving magnet.
The application also provides a lens driving mechanism, which comprises the locking driving limiting structure.
The application also provides an image pickup device, which comprises the lens driving mechanism.
Compared with the prior art, the application has the advantages that:
the limiting piece is used for preventing the return stroke of the locking driving frame so as to prevent the locking driving frame from excessively moving towards the direction of the incident light of the optical axis, thereby playing the role of protecting the elastic sheet and prolonging the service life.
Drawings
Fig. 1 is a schematic perspective view of a locking driving limiting structure provided by the utility model.
Fig. 2 is a schematic diagram of a top view of a locking driving limiting structure provided by the utility model.
FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 taken along line A-A.
Fig. 4 is a schematic structural view of a limiting member provided by the utility model.
Fig. 5 is a schematic view of a third embodiment provided by the present utility model.
Fig. 6 is a schematic diagram of a fourth embodiment provided by the present utility model.
In the figure, a locking driving frame 1, an elastic sheet 10, an annular coil 11, a limiting piece 2, a limiting column 20, an annular frame 21, a base 3, a driving magnet 30, a carrier 4, a carrier elastic sheet 40, a focusing coil 41 and an optical axis a are shown.
Detailed Description
The following are specific embodiments of the utility model and the technical solutions of the utility model will be further described with reference to the accompanying drawings, but the utility model is not limited to these embodiments.
Example 1
As shown in fig. 1 to 3, the lock drive limit structure comprises a lock drive frame 1 connected with elastic pieces 10 and axially moving on an optical axis a, wherein the lock drive frame 1 is connected to a base 3 through a plurality of elastic pieces 10, an annular coil 11 is arranged on the lock drive frame 1, and the annular coil 11 is matched with a drive magnet 30 fixed on the base 3 so as to drive the lock drive frame 1 to axially move on the optical axis a, namely, focus movement.
The carrier 4 is provided with a locking opening, the locking driving frame 1 is provided with a lock tongue, the lock tongue enters the locking opening and locks the carrier 4 at the axial position of the optical axis after the lock tongue is in place, and when the locking is canceled, the locking driving frame 1 returns to the original position under the action of the elastic sheet 10.
And a stopper 2 spaced apart from the lock drive frame 1 and for preventing excessive movement of the lock drive frame 1 in a direction of light incident on the optical axis a when the lock drive frame 1 is in the unlocked state.
The limiting piece 2 is used for preventing the return stroke of the locking driving frame 1 so as to prevent the locking driving frame 1 from excessively moving towards the direction of the incident light of the optical axis a, and the purpose of protecting the elastic sheet 10 is achieved so as to prolong the service life.
Preferably, as shown in fig. 1 and 3, the stopper 2 and the lock driving frame 1 of the present embodiment are sequentially distributed in the optical axis a from the incident light direction to the outgoing light direction. That is, the lock port is located away from the lock drive frame 1. Meanwhile, the axial lead of the limiting piece 2 is coincident with the axial lead of the locking driving frame 1, so that the equilibrium of limiting contact is realized, and the deflection phenomenon of the locking driving frame 1 caused by single-side limiting of the locking driving frame 1 is avoided.
Specifically, as shown in fig. 1 and 4, the limiting member 2 of the present embodiment includes at least two limiting posts 20 corresponding to at least two opposite sides of the locking driving frame 1 at a one-to-one interval, and when the limiting posts 20 are in contact with the locking driving frame 1, the locking driving frame 1 cannot move in the incident light direction of the optical axis a any more. The one end that spacing post 20 and locking drive frame 1 contacted has the plane to the edge has the chamfer, and spacing post 20 and locking drive frame 1's contact mode is the face-to-face contact, so that spacing contact is more reliable and stable.
Next, the limiting member 2 further includes an annular frame 21, and the limiting post 20 is vertically fixed on the annular frame 21. Of course, the annular frame 21 and the limiting post 20 can be integrally formed by injection molding, so as to improve the production efficiency and the structural strength.
The annular frame 21 and the locking driving frame 1 are parallel to each other so as to prevent the locking driving frame 1 from striking the annular frame 21 due to the movement of the locking driving frame 1, and the limit post 20 is fixed on a surface of the annular frame 21 close to the locking driving frame 1 so as to minimize the volume in the circumferential direction.
As a preferred solution, the ring frame 21 of the present embodiment is provided with four spacing posts 20 corresponding to each side of the locking driving frame 1 at intervals. The locking driving frame 1 is a quadrilateral frame, and each side edge of the locking driving frame 1 corresponds to one limiting column 20, so that the limiting of the locking driving frame 1 is more stable.
Specifically, as shown in fig. 1 and 3, the stopper 2 of the present embodiment is fixed to the driving magnet 30 of the base 3. The driving magnets 30 play a role in focusing driving, and generally, at least two driving magnets 30 are provided, and the driving magnets 30 are perpendicular to the base 3.
And the locking driving frame 1 is sleeved on the periphery of the driving magnet 30 which surrounds to form a circle, and the limiting column 20 of the limiting piece 2 is positioned on the outer side of the outer vertical face of the driving magnet 30. In this way, the thickness of the lens driving mechanism in the axial direction of the optical axis a can be reduced to the greatest extent, so that the lens driving mechanism can be applied to a thinner terminal. Such as a cell phone terminal or the like.
In the present embodiment
The carrier 4 performs a focusing movement under the action of a focusing drive. The focusing driving adopts a driving mode of an electromagnetic coil.
When the carrier 4 moves in place, the annular coil 11 is electrified and the driving magnet 30 is matched to enable the locking driving frame 1 to move to one side far from the incident light direction, and locking is performed; after the settlement of focusing, the annular coil 11 changes the current direction at this time so that the locking driving frame 1 moves to one side of the incident light direction, at this time, the lock tongue is separated from the locking notch, and the locking driving frame 1 is reset under the elastic force of the elastic sheet 10.
During resetting, the limiting piece 2 fixed on the side of the locking driving frame 1, which is positioned on the incident light side, limits the locking driving frame 1 so as to prevent the elastic sheet 10 from excessively bending and deforming.
Example two
The structure and the working principle of the present embodiment are basically the same as those of the first embodiment, and the different structures are as follows: the limiting member 2 is fixed to a boss (not shown) of the base 3.
Example III
As shown in fig. 1, 3 and 5, the present embodiment provides a lens driving mechanism including the lock driving limit structure of the first or second embodiment. The carrier 4 carries the lens 42, and two axial end surfaces of the carrier 4 are connected to the base 3 through the carrier elastic sheet 40.
The outer wall of the carrier 4 is provided with a focusing coil 41, the focusing coil 41 is positioned on the inner side of the inner vertical surface of the driving magnet 30, and the focusing coil 41 is matched with the driving magnet 30 after being electrified so as to enable the carrier 4 to move in a focusing way.
Example IV
As shown in fig. 6, the present embodiment provides an image pickup apparatus including the lens driving mechanism of the third embodiment. Imaging devices such as cell phones and the like.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. The locking drive limiting structure is characterized by comprising locking drive frames (1) which are connected with elastic sheets (10) and axially move on an optical axis (a), and limiting pieces (2) which are distributed at intervals with the locking drive frames (1) and are used for preventing the locking drive frames (1) from excessively moving towards the incident light direction of the optical axis (a) when the locking drive frames (1) are in an unlocking state.
2. The lock-up drive limiting structure according to claim 1, wherein the limiting member (2) and the lock-up drive frame (1) are sequentially distributed in the optical axis (a) from the incident light direction to the outgoing light direction.
3. The lock-out driving limiting structure according to claim 1, wherein the limiting member (2) comprises at least two limiting posts (20) corresponding to at least two opposite sides of the lock-out driving frame (1) at intervals, and when the limiting posts (20) are in contact with the lock-out driving frame (1), the lock-out driving frame (1) cannot move in the incident light direction of the optical axis (a).
4. A lock-up drive limiting structure according to claim 3, wherein the limiting member (2) further comprises an annular frame (21), and the limiting post (20) is fixed to the annular frame (21).
5. The locking drive limiting structure according to claim 4, wherein the annular frame (21) and the locking drive frame (1) are parallel to each other, and the limiting post (20) is fixed to a surface of the annular frame (21) close to the locking drive frame (1).
6. The locking drive limiting structure according to claim 5, wherein four limiting posts (20) are provided on the annular frame (21) at intervals corresponding to each side of the locking drive frame (1).
7. The locking drive limiting structure according to claim 1, wherein the limiting member (2) is fixed on a drive magnet (30) of the base (3); or the limiting piece (2) is fixed on a boss of the base (3).
8. The locking driving limiting structure according to claim 7, wherein the locking driving frame (1) is sleeved on the periphery of the driving magnet (30) which surrounds to form a circle, and the limiting column (20) of the limiting piece (2) is located on the outer side of the outer vertical face of the driving magnet (30).
9. A lens driving mechanism, characterized in that the lens driving mechanism comprises the lock-up driving limiting structure according to any one of claims 1 to 8.
10. An image pickup apparatus, comprising the lens driving mechanism according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320132265.1U CN219370099U (en) | 2023-01-14 | 2023-01-14 | Locking drive limit structure, lens driving mechanism and image pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320132265.1U CN219370099U (en) | 2023-01-14 | 2023-01-14 | Locking drive limit structure, lens driving mechanism and image pickup device |
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| Publication Number | Publication Date |
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| CN219370099U true CN219370099U (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320132265.1U Active CN219370099U (en) | 2023-01-14 | 2023-01-14 | Locking drive limit structure, lens driving mechanism and image pickup device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117991567A (en) * | 2024-04-07 | 2024-05-07 | 新思考电机有限公司 | Lens driving mechanism and camera module |
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2023
- 2023-01-14 CN CN202320132265.1U patent/CN219370099U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117991567A (en) * | 2024-04-07 | 2024-05-07 | 新思考电机有限公司 | Lens driving mechanism and camera module |
| CN117991567B (en) * | 2024-04-07 | 2024-06-04 | 新思考电机有限公司 | Lens driving mechanism and camera module |
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