Lens driving mechanism

Abstract

The utility model discloses a lens driving mechanism, which comprises a base, at least three supporting rods, a frame, a plurality of damping glues and a first carrier, and the top surface of the base is provided with a protruding part. The bottom end of the supporting rod is connected with the base, and the top end of the supporting rod is located above the base. The frame is located above the base and connected with the supporting rod, and the frame is arranged to be capable of moving in two directions perpendicular to the vertical direction. The damping glue is connected with the protruding part and located on the bottom face of the frame. The first carrier is located in the frame and arranged to be capable of moving in the vertical direction, and the first carrier is used for installing a lens.

Description

Technical Field

[0001] The utility model relates to the technical field of lens driving, in particular to a lens driving mechanism. Background Art

[0002] In recent years, with the development of technology, many electronic devices now have the function of taking photos or recording videos. The use of these electronic devices is becoming more and more common, and they are developing in the direction of convenient and thin designs to provide users with more choices.

[0003] In practice, in order to adapt to various shooting scenes, the lens needs to be constantly focused. In the prior art, a lens driving mechanism is generally used to drive the lens to move along the optical axis to adjust the focal length.

[0004] In the prior art, the lens driving mechanism includes a frame, a carrier, a top spring leaf, a bottom spring leaf and a base, wherein the carrier is provided with a coil and is movably mounted in the frame, and the carrier is used to mount the lens. The top spring leaf is elastic and connected to the top of the frame and the top of the carrier, and the bottom spring leaf is also elastic and connected to the bottom of the carrier and the bottom of the frame, and the top spring leaf and the bottom spring leaf movably connect the carrier to the frame. The frame is movably mounted above the base through a plurality of support rods, and can move in a direction perpendicular to the optical axis of the lens to prevent the lens from shaking. The carrier is mounted in the frame and can move in the direction of the optical axis of the lens to adjust the focal length of the lens.

[0005] In order to prevent the frame from touching the base during movement, a groove is usually set on the top surface of the base to accommodate damping glue, which can contact the bottom surface of the frame to cushion the movement of the frame and prevent the frame from directly hitting the base. However, when dispensing glue, it is not easy to align the dispensing head with the groove, and when the colloid is irradiated and formed, since the groove is concave downward, the damping glue in the groove cannot be completely irradiated to form it quickly. Utility Model Content

[0006] The utility model aims to provide a lens driving mechanism to solve the problems of the prior art.

[0007] In order to solve the above technical problems, the embodiment of the utility model provides a lens driving mechanism, and the lens driving mechanism includes:

[0008] A base, wherein a top surface of the base is provided with a raised portion;

[0009] At least three support rods, the bottom ends of the support rods are connected to the base, and the top ends of the support rods are located above the base;

[0010] A frame, located above the base and connected to the support rod, the frame being configured to move in two directions perpendicular to the vertical direction;

[0011] A plurality of damping adhesives, the damping adhesives are connected to the protruding portions and are located on the bottom surface of the frame;

[0012] A first carrier is located in the frame and is configured to be movable in a vertical direction, and is used for mounting a lens.

[0013] In one embodiment, the raised portion includes a plurality of convex strips, and the convex strips are ring-shaped and open toward the outside of the base.

[0014] In one embodiment, the base is in the shape of a rectangular plate and has four corners;

[0015] The convex strip is located at the corner of the base.

[0016] In one embodiment, two convex strips are provided at each corner of the base.

[0017] In one embodiment, the two convex strips form a U-shape and are respectively open toward two adjacent sides of the base.

[0018] In one embodiment, a convex block aligned with the convex strip is provided on the bottom surface of the frame, and a bottom end of the convex block is located in the damping glue in the convex strip.

[0019] In one embodiment, the raised portion comprises a tab;

[0020] The damping glue is located on the top surface of the protruding piece.

[0021] In one embodiment, the bottom surface of the frame is provided with a protrusion, and the protrusion is aligned with the protrusion in the vertical direction;

[0022] The damping glue is located on the top surface of the protruding piece;

[0023] The bottom end of the protrusion is located in the damping glue.

[0024] In one embodiment, the lens driving mechanism further comprises a second carrier connected to the top surface of the frame for mounting another lens.

[0025] In one embodiment, the top surface of the protrusion is a rough surface, and the bottom surface of the bump is a rough surface.

[0026] In the utility model, the protrusion is arranged on the top surface of the base, and the damping glue can be connected to the top surface or the inside of the protrusion. When irradiating the damping glue, the irradiation lamp can also irradiate the damping glue in multiple directions to accelerate the molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an assembly diagram of a lens driving mechanism of an embodiment of the utility model.

[0028] Figure 2 , Figure 3 and Figure 4 yes Figure 1 An exploded view of the lens drive mechanism of the illustrated embodiment.

[0029] Figure 5 yes Figure 2 Assembly diagram of the base, frame and support rods in the illustrated embodiment.

[0030] Figure 6 yes Figure 2 A perspective view of the base in the illustrated embodiment.

[0031] Figure 7 yes Figure 2 A perspective view of the frame in the illustrated embodiment.

[0032] Figure 8 It is an assembly diagram of a base, a frame and a support rod of another embodiment of the utility model.

[0033] Fig. 9 yes Figure 8 A perspective view of the base and frame in the illustrated embodiment.

[0034] Fig.10 yes Figure 8 A perspective view of the frame in the illustrated embodiment.

[0035] Reference numerals: 100, lens driving mechanism; 1, base; 11, convex strip; 12, convex piece; 2, frame; 21, convex block; 22, magnet; 23, convex point; 3, first carrier; 4, second carrier; 5, top reed; 6, bottom reed; 7, support rod; 8, circuit board; 81, avoidance gap; 9, housing; DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0037] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0038] The following will be combined with the accompanying drawings to describe the various embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0039] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0040] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0041] In the following description, in order to clearly demonstrate the structure and working mode of the utility model, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0042] The utility model relates to a lens driving mechanism 100, which comprises a base 1, a shell 9, a frame 2, a first carrier 3 and four support rods 7, wherein the base 1 is in the shape of a rectangular plate and a raised portion is provided on the top surface, and the raised portion is used to place damping glue (not shown in the figure).

[0043] The bottom ends of the four support rods 7 are connected to the base 1, and the top ends are located above the base 1. The support rods 7 are conductive and used to support the frame 2. It should be understood that in order to stably support the movement of the frame 2, at least three support rods 7 are required to support the frame 2.

[0044] The frame 2 is located above the base 1 and connected to the top of the support rod 7. The frame 2 is annular and is configured to move in two directions perpendicular to the vertical direction, which is the direction of the optical axis of the lens. The bottom surface of the frame 2 abuts against the damping rubber, which can buffer the movement of the frame 2 and prevent the frame 2 from colliding with the base 1 during movement, causing movement stagnation.

[0045] In the prior art, the damping glue is set in the groove of the base 1, which is inconvenient to dispense glue, and it is also inconvenient to irradiate the damping glue with a lamp to form it. In the present invention, the protrusion is set on the top surface of the base 1, and the damping glue connection point can be connected to the top surface or the inside of the protrusion. When irradiating the damping glue, the irradiation lamp can also irradiate the damping glue in multiple directions to accelerate the forming.

[0046] In addition, the lens driving mechanism 100 of the present invention is provided with two lenses and a first carrier 3 and a second carrier 4 for mounting the two lenses. The first carrier 3 is located in the ring of the frame 2 and can move in the vertical direction, that is, the optical axis direction of the lens. Figure 1-3 In the illustrated embodiment, the carrier is elastically connected to the frame 2 via the top spring leaf 5 and the bottom spring leaf 6 , and both the top spring leaf 5 and the bottom spring leaf 6 are elastic and can drive the carrier to reset after movement.

[0047] The four support rods 7 are respectively connected to the top spring sheet 5, and the frame 2 is supported by the top spring sheet 5. After the frame 2 moves, the support rods 7 can drive the frame 2 to reset.

[0048] The housing 9 and the base 1 are buckled together to form a hollow cavity for accommodating the frame 2 , the first carrier 3 and the second carrier 4 .

[0049] The second carrier 4 is fixedly connected to the top of the frame 2, and the top of the second carrier 4 extends from the top of the housing 9 and is equipped with another lens. The lens in the second carrier 4 is coaxially arranged with the lens in the first carrier 3, and when the first carrier 3 moves along the optical axis, the distance between the first carrier 3 and the second carrier 4 changes, thereby achieving an adjustment effect of focusing light.

[0050] In one embodiment, the raised portion includes a plurality of convex strips 11, each convex strip 11 is annular and open toward the outside of the base 1, and the two ends are respectively located on the side of the base 1. That is, the convex strip 11 forms an open ring with one end open, and the opening is located on the outside of the base 1. When dispensing glue, the dispensing head can dispense glue from the opening to the inside of the ring formed by the convex strip 11, that is, the opening of the convex strip 11 has a positioning and guiding function for dispensing glue. Moreover, since the convex strip 11 protrudes from the top surface of the base 1, when the damping glue is irradiated and formed, the light can more easily fully irradiate the damping glue, and the damping glue can also be heated through the convex strip 11 to make it form faster.

[0051] exist Figure 1-7In the illustrated embodiment, the base 1 is in the shape of a rectangular plate and has four corners, and the convex strips 11 are located at the corners of the base 1. Two convex strips 11 are provided at each corner, each convex strip 11 is U-shaped, and the openings of the two convex strips 11 are respectively located on two adjacent sides of the base 1, that is, the two U-shaped convex strips 11 at each corner are respectively open to the outside of the two adjacent sides. It should be understood that in other embodiments, each convex strip 11 can also be formed into other shapes, not limited to the U shape, and the convex strips 11 can also be provided at other positions of the base 1, not limited to the corners.

[0052] Optionally, the bottom surface of the frame 2 is provided with a convex block 21 aligned with the convex strip 11, the bottom end of the convex block 21 is located in the damping glue in the convex strip 11, and the convex block 21 is used to cooperate with the damping glue to buffer the movement of the frame 2. Further, the bottom end of the convex block 21 is provided with a convex point 23, which is a small protrusion protruding from the bottom surface of the convex block 21 and can be easily inserted into the damping glue.

[0053] In another embodiment, if Figure 8-10 As shown, the raised portion includes a plurality of convex pieces 12, each convex piece 12 is in sheet shape and connected to the top surface of the base 1, the convex piece 12 is stacked on the top surface of the base 1, and the damping glue is located on the top surface of the convex piece 12. During the dispensing process, the dispensing head can be aligned with the top surface of the convex piece 12 to dispense glue. During irradiation, since the damping glue is located on the top surface of the convex piece 12, it is more convenient for light to be fully irradiated.

[0054] In addition, the bottom surface of the frame 2 is preferably provided with a protrusion 21, which is aligned with the protrusion 21 in the vertical direction and the bottom end of the protrusion 21 is located in the damping glue on the top surface of the protrusion 12. It should be noted that Figure 8-10 In the illustrated embodiment, the projection 21 is an arc-shaped protrusion, which is approximately an arc of 1 / 4 of a circle, and the projection 12 is a rectangular sheet.

[0055] In addition, the lens driving mechanism 100 further includes a circuit board 8 , which is stacked on the top surface of the base 1 and has four corners with avoidance notches 81 for avoiding the bottom end of the support rod 7 and the above-mentioned convex strips 11 or convex pieces 12 .

[0056] The housing 9 and the base 1 are buckled together to form a hollow cavity for accommodating the frame 2 , the first carrier 3 and the second carrier 4 .

[0057] An OIS coil is provided in the circuit board 8, and a magnet 22 is provided in the frame 2. Under the action of the OIS coil and the magnet 22, the frame 2 together with the magnet 22, the first carrier 3 and the second carrier 4 will move in two mutually perpendicular directions perpendicular to the vertical direction in the hollow cavity.

[0058] An AF coil is arranged on the outside of the first carrier 3. Under the action of the AF coil and the magnet 22, the carrier will move in the vertical direction relative to the frame 2, that is, in the direction of the optical axis, and the lens installed in the first carrier 3 will also move accordingly, thereby realizing a three-axis movement operation.

[0059] The frame 2 is arranged at the upper end of the circuit board 8. The magnet 22 on the frame 2 corresponds to the AF coil wound on the outside of the first carrier 3. A top spring 5 is connected between the top of the frame 2 and the top of the first carrier 3. A bottom spring 6 is connected between the bottom of the frame 2 and the bottom of the first carrier 3. The top spring 5 and the bottom spring 6 are used for the reset operation of the first carrier 3. At the same time, the top spring 5 is also used for the connection between the support rod 7 and the first carrier 3 and the transmission of current. The top spring 5 is connected to the base 1 through the support rod 7. The four support rods 7 completely support the frame 2 and the first carrier 3, making them suspended to reduce the friction when the frame 2 is driven.

[0060] The base 1 is provided with a built-in circuit, which is electrically connected to the circuit board 8 and the support rod 7. When the driving operation is performed, the current on the base 1 is transmitted to the support rod 7, and the circuit board 8 is powered on to supply power to the OIS coil, and the support rod 7 transmits the current to the top spring sheet 5, and then transmits the current to the AF coil on the periphery of the first carrier 3 through the top spring sheet 5 and supplies power, thereby realizing the power supply operation of the OIS coil and the AF coil.

[0061] The lens driving mechanism 100 of the present invention may also be provided with only one first carrier 3, without the second carrier 4. There is no excessive limitation on the shape of the bump 21 of the frame 2, and the bump 21 may be inserted into the damping glue, or may simply be in contact with and bonded to the damping glue, and the buffering effect of the damping glue may also be achieved.

[0062] In addition, the lower surface of the protrusion 21 can be roughened to form a rough surface, and the rough surface has a certain degree of roughness, that is, it is not a smooth surface, and the size of the roughness is not limited. Similarly, the top surface of the protrusion 12 can also be roughened to form a rough surface. The rough surface of the protrusion 21 or the rough surface of the protrusion 12 can increase its surface roughness to improve the structural stability after the damping glue is installed.

[0063] Preferred embodiments of the present invention have been described in detail above, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0064] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0065] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A lens driving mechanism, characterized in that: The lens driving mechanism comprises: A base, wherein a top surface of the base is provided with a raised portion; At least three support rods, the bottom ends of the support rods are connected to the base, and the top ends of the support rods are located above the base; A frame, located above the base and connected to the support rod, the frame being configured to move in two directions perpendicular to the vertical direction; A plurality of damping adhesives, the damping adhesives are connected to the protruding portions and are located on the bottom surface of the frame; A first carrier is located in the frame and is configured to be movable in a vertical direction, and is used for mounting a lens.

2. The lens driving mechanism according to claim 1, characterized in that: The raised portion includes a plurality of convex strips, and the convex strips are ring-shaped and open toward the outside of the base.

3. The lens driving mechanism according to claim 2, characterized in that: The base is in the shape of a rectangular plate and has four corners; The convex strip is located at the corner of the base.

4. The lens driving mechanism according to claim 3, characterized in that: Each corner of the base is provided with two convex strips.

5. The lens driving mechanism according to claim 4, characterized in that: The two convex strips form a U shape and are respectively open toward two adjacent sides of the base.

6. The lens driving mechanism according to claim 2, characterized in that: The bottom surface of the frame is provided with a convex block aligned with the convex strip, and the bottom end of the convex block is located in the damping glue in the convex strip.

7. The lens driving mechanism according to claim 1, characterized in that: The raised portion includes a tab; The damping glue is located on the top surface of the protruding piece.

8. The lens driving mechanism according to claim 7, characterized in that: The bottom surface of the frame is provided with a protrusion, and the protrusion is aligned with the protrusion in the vertical direction; The bottom end of the protrusion is located in the damping glue.

9. The lens driving mechanism according to claim 1, characterized in that: The lens driving mechanism further includes a second carrier connected to the top surface of the frame for mounting another lens.

10. The lens driving mechanism according to claim 8, characterized in that: The top surface of the protruding piece is a rough surface, and the bottom surface of the protruding block is a rough surface.

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