Base

Abstract

The utility model discloses a base, the base is applied to a lens driving mechanism, the lens driving mechanism comprises a movable part, the movable part is provided with a magnet, the movable part is used for installing a lens, the base comprises a bottom plate, a plurality of side plates and a coil, the bottom plate is in a plate shape and is located on the bottom surface of the movable part, and the coil is located on the bottom surface of the movable part. The bottom plate is provided with a central hole, and the central hole is aligned with the lens. The multiple side plates are arranged around the movable part, and the bottom ends of the side plates are connected to the top face of the bottom plate. And the coil is connected to the side plate and is matched with the magnet to drive the movable part to move.

Description

Technical Field

[0001] The utility model relates to the technical field of lens driving, in particular to a base. 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, an upper spring leaf, a lower spring leaf and a base, wherein the carrier is provided with a coil and can be movably mounted in the frame, and the carrier is used to mount the lens. The upper spring leaf is elastic and connected to the top of the frame and the top of the carrier, and the lower spring leaf is also elastic and connected to the bottom of the carrier and the bottom of the frame, and the upper spring leaf and the lower spring leaf movably connect the carrier to the frame. The frame is movably mounted above the base through a plurality of suspension wires, 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 the prior art, coils are respectively arranged in the carrier and the base, and cooperate with the magnets of the frame to drive the carrier or the frame to move. This arrangement requires the line to extend to the carrier, and the line direction is complicated, which is not conducive to the movement of the carrier and the frame, and needs to be improved urgently. Utility Model Content

[0006] The purpose of the utility model is to provide a base 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 base, which is applied to a lens driving mechanism, wherein the lens driving mechanism includes a movable part, wherein the movable part is provided with a magnet, and wherein the movable part is used to install the lens, and the base includes:

[0008] A bottom plate, the bottom plate is plate-shaped and is located on the bottom surface of the movable member, the bottom plate is provided with a center hole, and the center hole is aligned with the lens;

[0009] a plurality of side plates, the plurality of side plates being arranged around the movable member and having bottom ends connected to the top surface of the bottom plate; and

[0010] A coil is connected to the side plate and cooperates with the magnet to drive the movable part to move.

[0011] In one embodiment, the inner wall of the side plate is provided with a mounting groove, and the coil is located in the mounting groove.

[0012] In one embodiment, the bottom plate is a rectangular plate, and the four side plates are connected end to end and are located at the edge of the bottom plate;

[0013] The inner walls of the three side panels are respectively provided with the mounting grooves;

[0014] The three coils are respectively located in the three installation grooves and cooperate with the magnets of the movable part to drive the movable part to move along three mutually perpendicular directions.

[0015] In one embodiment, the base is integrally formed.

[0016] In one embodiment, the plurality of side panels are arranged perpendicular to the bottom panel.

[0017] In one embodiment, the base further includes a position sensor, which is located in the mounting groove and is used to sense the position of the movable part.

[0018] In one embodiment, the three position sensors are respectively located in the three installation grooves.

[0019] In one embodiment, at least one of said position sensors is located within the loop of one of said coils.

[0020] In one embodiment,

[0021] A plurality of built-in circuits are arranged in the base, some of the built-in circuits are electrically connected to the coil, and some of the built-in circuits are electrically connected to the position sensor;

[0022] The bottom end of the built-in circuit extends beyond the outside of the base for being electrically connected to an external power source.

[0023] In one embodiment, the built-in circuit is embedded in the base by injection molding and extends in a vertical direction. The top of the built-in circuit is connected to the coil or the position sensor, and the bottom extends beyond the bottom of the base for electrical connection to an external power supply.

[0024] The utility model arranges the coil on the side plate of the base, which can cooperate with the magnet of the movable part to drive the movable part to move. There is no need to set a separate circuit on the movable part, and the built-in circuit of the base does not need to extend to the movable part, so that the movable part can move more flexibly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 and Figure 2 It is a three-dimensional diagram of a base according to an embodiment of the utility model.

[0026] Figure 3 , Figure 4 and Figure 5 yes Figure 1 Exploded view of the base in the illustrated embodiment.

[0027] Figure numerals: 1. base; 11. bottom plate; 12. side plate; 13. center hole; 14. mounting groove; 2. coil; 3. position sensor; 4. built-in circuit. DETAILED DESCRIPTION

[0028] 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.

[0029] 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."

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The utility model relates to a base 1, which is mainly used in a lens driving mechanism. The lens driving mechanism also includes a movable part, which is used to install a lens and is provided with a magnet. The movable part can drive the lens to move to achieve a focusing or anti-shake function. In some embodiments, the movable part may include a frame and a carrier installed in the frame, the magnet is installed in the frame, and the carrier can move in the frame along the optical axis direction, and the lens is installed in the carrier. In other embodiments, the movable part is an integral annular component formed in one piece, and the lens is directly installed. The design shape of the movable part can be set according to practical needs to implement the movable part.

[0035] Specifically, the base 1 includes a bottom plate 11, a plurality of side plates 12, and at least one set of coils 2. The bottom plate 11 is plate-shaped and is located on the bottom surface of the movable member (not shown). The bottom plate 11 is provided with a central hole 13, which is aligned with the lens to avoid light passing through the lens. The plurality of side plates 12 are connected end to end and the bottom ends are connected to the edge of the bottom plate 11 to form a frame. The movable member is located in the frame formed by the plurality of side plates 12.

[0036] exist Figure 1-5 In the embodiment shown, the bottom plate 11 is in the shape of a rectangular plate, the center hole 13 is located at the center of the bottom plate 11, and the four side plates 12 are connected end to end and are respectively located at the four side edges of the bottom plate 11. The four side plates 12 have the same height and are all in the shape of rectangular plates. The inner walls of the three side plates 12 are respectively provided with mounting grooves 14, and the mounting grooves 14 are used to mount the coil 2.

[0037] It should be understood that in other embodiments, the base plate 11 may also be a circular plate, and the multiple side panels 12 may be arranged along the circumference of the base plate 11 and connected to the edge of the base plate 11. The shapes of the multiple side panels 12 may be the same or different, and the specific shapes and heights of the multiple side panels 12 may be set as needed. The utility model does not limit the specific shapes of the base plate 11 and the multiple side panels 12.

[0038] As a preferred solution, multiple side panels 12 and the bottom panel 11 are integrally injection molded, which can increase the connection stability between the side panels 12 and the bottom panel 11. In addition, multiple built-in circuits 4 are also provided in the base 1, and the two connection ends of at least two built-in circuits 4 need to be exposed to the inner wall of the mounting groove 14 for energizing the coil 2, that is, the two connection ends of two built-in circuits 4 need to be provided in each mounting groove 14. During injection molding, in order to stabilize the built-in circuit 4, a two-time injection molding method can be adopted, that is, local injection molding first, first injecting the local area near the mounting groove 14, and then injecting the connection end of each built-in circuit 4 to the inner wall of the mounting groove 14, and then injecting the bottom panel 11 and the side panel 12 at other positions, so that the connection end of the built-in circuit 4 can be positioned and fixed on the inner wall of the mounting groove 14, which is convenient for positioning and connecting with the coil 2.

[0039] As a preferred solution, the four side plates 12 are perpendicular to the bottom plate 11, the four side plates 12 are at substantially the same distance from the movable part, and the movable part is between the four side plates 12. The three coils 2 are respectively arranged in the mounting grooves 14 of any three side plates 12, that is, the distance between the magnet of the movable part and the coil 2 of any one of the four side plates 12 is substantially the same, which can increase the balance of the movable part.

[0040] exist Figure 4 In the illustrated embodiment, the connection end of each built-in circuit 4 is respectively located on the bottom wall opposite to the opening of the mounting groove 14, and each built-in circuit 4 extends in the vertical direction, that is, the connection end at the top of each built-in circuit 4 is located in the mounting groove 14, and the connection end at the bottom extends beyond the bottom end of the bottom plate 11 for electrical connection to an external power source.

[0041] The three groups of coils 2 are respectively arranged in the mounting grooves 14 of the three side plates 12 and are respectively electrically connected to the connection ends of the two built-in circuits 4 in the three side plates 12. The three groups of coils 2 are respectively matched with the magnets of the movable part to drive the movable part to move in three mutually perpendicular directions. That is, the movable part can drive the lens to move in the optical axis direction or in two other perpendicular directions perpendicular to the optical axis direction to achieve focusing or anti-shake function.

[0042] In other embodiments, the four side panels 12 may not be provided with the mounting grooves 14 , and the three groups of coils 2 may be directly mounted on the inner walls of any three side panels 12 and electrically connected to the built-in circuits 4 in the three side panels 12 .

[0043] Optionally, only one group of coils 2 may be connected to the side plate 12, and the other two groups of coils 2 may be arranged inside the bottom plate 11. The position of the magnet of the movable part may be installed in accordance with the position of the coils 2. If one group of coils is installed on the side plate 12 and two groups of coils are installed inside the bottom plate 11, at least one group of magnets may be installed on the radially outer side of the movable part, and at least two groups of magnets may be installed on the bottom side of the movable part. As a preferred solution, three groups of coils 2 may be arranged in the mounting grooves 14 of the three side plates 12, respectively, or two groups of coils 2 may be arranged in the mounting grooves 14 of the two side plates 12 and cooperate with the magnets on the side of the movable part to drive the movable part to move, and another group of coils 2 may be arranged in the bottom plate 11 and cooperate with the magnets at the bottom of the movable part to drive the movable part to move. Regardless of how the three groups of coils 2 are arranged, the coils 2 are all arranged on the base 1, and do not need to be arranged inside the movable part. The coils 2 may be directly electrically connected to the built-in circuit 4 of the base 1, and do not need to be separately arranged on the movable part. The built-in circuit 4 of the base 1 does not need to extend to the movable part, thereby facilitating the movable part to move more flexibly.

[0044] Optionally, the inner walls of the four side plates 12 are respectively provided with mounting grooves 14, and a coil 2 is arranged in each mounting groove 14, that is, four coils 2 are respectively arranged in the mounting grooves 14 of the four side plates 12, which can increase the driving force of the movable parts.

[0045] In addition, the base 1 also includes three position sensors 3, which are respectively arranged in the mounting grooves 14 of the three side panels 12, and are used to sense the position of the movable part along the optical axis direction or the other two directions perpendicular to the optical axis direction. Of course, in other embodiments, only one position sensor 3 may be provided, and the position sensor 3 may be provided in the mounting groove 14 of any side panel 12 or on the inner wall of the side panel 12 to sense the position of the movable part. As a preferred solution, at least three position sensors 3 are provided to more sensitively sense the position changes of the movable part along three mutually perpendicular directions.

[0046] The three position sensors 3 can be respectively arranged in the rings of the three coils 2, or can be arranged outside the coils 2 and spaced apart from the coils 2. They are preferably arranged in the ring of the coils 2, because the coils 2 correspond to the magnets of the movable parts. The position sensor 3 is a Hall sensor, which is located in the ring of the coils 2 and can be closer to the corresponding magnets, thereby more sensitive to changes in the magnetic field of the magnets.

[0047] At least four built-in circuits 4 in the base 1 are electrically connected to a single position sensor 3 , that is, each position sensor 3 requires four built-in circuits 4 to transmit signals.

[0048] 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.

[0049] 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.

[0050] 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 base, the base is applied to a lens driving mechanism, the lens driving mechanism includes a movable part, the movable part is provided with a magnet, the movable part is used to install a lens, characterized in that: The base comprises: A bottom plate, the bottom plate is plate-shaped and is located on the bottom surface of the movable member, the bottom plate is provided with a center hole, and the center hole is aligned with the lens; a plurality of side plates, the plurality of side plates being arranged around the movable member and having bottom ends connected to the top surface of the bottom plate; and A coil is connected to the side plate and cooperates with the magnet to drive the movable part to move.

2. The base according to claim 1, characterized in that: The inner wall of the side plate is provided with a mounting groove, and the coil is located in the mounting groove.

3. The base according to claim 2, characterized in that: The bottom plate is a rectangular plate, and the four side plates are connected end to end and are located at the edge of the bottom plate; The inner walls of the three side panels are respectively provided with the mounting grooves; The three coils are respectively located in the three installation grooves and cooperate with the magnets of the movable part to drive the movable part to move along three mutually perpendicular directions.

4. The base according to claim 1, characterized in that: The base is integrally formed.

5. The base according to claim 1, characterized in that: The plurality of side panels are arranged perpendicularly to the bottom panel.

6. The base according to claim 3, characterized in that: The base also includes a position sensor, which is located in the installation groove and is used to sense the position of the movable part.

7. The base according to claim 6, characterized in that: The three position sensors are respectively located in the three installation grooves.

8. The base according to claim 7, characterized in that: At least one of the position sensors is located within the loop of one of the coils.

9. The base according to claim 6, characterized in that: A plurality of built-in circuits are arranged in the base, some of the built-in circuits are electrically connected to the coil, and some of the built-in circuits are electrically connected to the position sensor; The bottom end of the built-in circuit extends beyond the outside of the base for being electrically connected to an external power source.

10. The base according to claim 9, characterized in that: The built-in circuit is embedded in the base by injection molding and extends in the vertical direction. The top of the built-in circuit is connected to the coil or the position sensor, and the bottom extends beyond the bottom of the base for electrical connection with an external power supply.

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