Lens focusing device, base and metal frame thereof

Abstract

The utility model discloses a lens focusing device, a base and a metal frame thereof, the metal frame is installed in the base of the lens focusing device, the metal frame comprises a built-in circuit and an induction sheet, the built-in circuit is provided with a plurality of connecting ends, and part of the connecting ends extend to the outside of the base. The induction sheet is in a sheet shape formed by bending and extending the built-in circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of lens driving, in particular to a lens focusing device, a base and a metal frame thereof. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and lightweight designs to provide users with more choices.

[0003] Some electronic devices with camera or video recording functions are equipped with a lens driving module to drive an optical component such as a lens to move, thereby achieving the functions of autofocus (AF) and optical image stabilization (OIS). Light can pass through the aforementioned optical component to form an image on a photosensitive component.

[0004] The base is generally provided with a built-in circuit, which is connected to an external power line. In order to detect the displacement of the carrier, a sensor for sensing the position of the carrier needs to be installed on the base, but the sensor takes up a large space and is inconvenient to install. Utility Model Content

[0005] The utility model aims to provide a lens focusing device, a base and a metal frame thereof to solve the problems of the prior art.

[0006] In order to solve the above technical problems, the embodiment of the utility model provides a metal frame, which is installed in the base of the lens focusing device, and the metal frame includes:

[0007] A built-in circuit, the built-in circuit having a plurality of connection ends, some of the connection ends extending to the outside of the base; and

[0008] The induction sheet is formed by bending and extending the built-in circuit.

[0009] In one embodiment, part of the connection ends of the built-in circuit are exposed on the top surface of the base.

[0010] In one embodiment, the metal frame further includes a reinforcing plate, which is electrically connected to the built-in circuit and is located on a side opposite to the induction sheet.

[0011] In one embodiment, a plurality of the sensor plates are arranged in a vertical direction.

[0012] The utility model also relates to a base, which comprises:

[0013] Base plate;

[0014] a side panel connected to a top surface of the bottom panel; and

[0015] The above-mentioned metal frame, the built-in circuit is located inside the bottom plate and the connecting end extends to the outside of the bottom plate;

[0016] The induction sheet is located inside the side plate.

[0017] In one embodiment, the two side panels are arranged opposite to each other;

[0018] The induction sheet is located in one of the side panels.

[0019] The metal frame further comprises a reinforcing plate, which is electrically connected to the built-in circuit and is located inside the other side plate.

[0020] In one embodiment, the bottom plate is provided with a plurality of avoidance holes, and the avoidance holes penetrate the bottom plate in a vertical direction.

[0021] In one embodiment, the built-in circuits are distributed at the edge of the bottom plate, and the avoidance holes are located on the inner side of the built-in circuits.

[0022] The utility model also relates to a lens focusing device, comprising:

[0023] The above-mentioned base;

[0024] A magnet group connected to the top surface of the bottom plate;

[0025] A carrier, the carrier is located on the top surface of the bottom plate and is provided with a coil group, and the coil group cooperates with the magnet group to drive the carrier to move in a vertical direction;

[0026] a lower spring sheet, the lower spring sheet being located between the carrier and the bottom plate and being electrically connected to the built-in circuit; and

[0027] An electrode sheet is connected to the carrier and the lower spring sheet, and forms a capacitor with the inductive sheet.

[0028] In one embodiment, the lens focusing device further comprises:

[0029] An upper spring sheet, the upper spring sheet is located on the top of the carrier and connected to the carrier;

[0030] The outer shell covers the carrier and the upper spring sheet and is connected to the bottom plate and the upper spring sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 and Figure 2It is an exploded view of a lens focusing device according to an embodiment of the utility model.

[0032] Figure 3 yes Figure 1 Assembly diagram of the base, carrier and lower spring in the illustrated embodiment.

[0033] Figure 4 yes Figure 1 Assembly diagram of the carrier and the lower spring in the illustrated embodiment.

[0034] Figure 5 yes Figure 1 A perspective view of the base in the illustrated embodiment.

[0035] Figure 6 It is an assembly diagram of a built-in circuit, a sensor board and a reinforcement board in one embodiment of the utility model.

[0036] Figure 7 It is a three-dimensional diagram of a built-in circuit, a sensing plate, a reinforcing plate and an electrode sheet in an embodiment of the utility model.

[0037] Reference numerals: 10, lens focusing device; 1, base; 11, bottom plate; 12, side plate; 13, built-in circuit; 14, induction sheet; 15, reinforcement plate; 16, boss; 17, avoidance hole; 2, carrier; 21, coil group; 3, lower spring sheet; 31, spring wire; 32, electrode sheet; 4, upper spring sheet; 5, magnet group; 6, housing; DETAILED DESCRIPTION

[0038] 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.

[0039] 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."

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The utility model relates to a lens focusing device 10, a base 1 and a spring leaf, wherein the lens focusing device 10 comprises a base 1, a carrier 2, an upper spring leaf 4, a spring leaf and a shell 6, wherein the base 1 comprises a bottom plate 11 and two side plates 12 located on the top surface of the bottom plate 11. The carrier 2 is located above the base 1 and between the two side plates 12, and the carrier 2 can move in a vertical direction. The carrier 2 is used to install a lens, and the optical axis direction of the lens is also in a vertical direction, so the carrier 2 can drive the lens to focus when moving in a vertical direction. The upper spring leaf 4 is elastic and is located on the top of the carrier 2, and the shell 6 covers the carrier 2, the upper spring leaf 4, and the outer sides of the side plates 12 and is connected to the bottom plate 11 and the upper spring leaf 4.

[0045] The upper spring leaf 4 is elastic and connected to the top of the carrier 2 and the inner wall of the housing 6 .

[0046] The reed is used to connect the carrier 2 and the base 1, and is generally arranged below the carrier 2, and is defined as the lower reed 3. The lower reed 3 is also elastic and can support the carrier 2. The lower reed 3 and the upper reed 4 can cooperate to drive the carrier 2 to move and then reset.

[0047] The lower spring sheet 3 includes a plurality of spring wires 31 and an electrode sheet 32 ​​connected to one of the spring wires 31 .

[0048] Specifically, the plurality of spring wires 31 are elastic and conductive, and the spring wires 31 are located at the bottom of the carrier 2 and connected to the bottom of the carrier 2 and the bottom plate 11. The electrode sheet 32 ​​is a sheet-like structure, and the bottom end is connected to the spring wire 31, and the top end extends in the vertical direction. The electrode sheet 32 ​​can be attached to the outside of the carrier 2. The electrode sheet 32 ​​can be powered by the spring wire 31, and the spring wire 31 can be directly connected to the built-in circuit 13 in the base 1, and no additional circuit is required to power the electrode sheet 32. In addition, the electrode sheet 32 ​​can be directly attached to the outside of the carrier 2, and does not need to be embedded in the carrier 2, which is convenient for installation.

[0049] The electrode sheet 32 ​​can cooperate with the inductive sheet 14 of the base 1 to form a capacitor, which will be described in detail below.

[0050] The utility model directly connects the electrode sheet 32 ​​and the lower spring sheet 3, and the lower spring sheet 3 can be electrically connected to the built-in circuit 13 of the base 1. After the built-in circuit 13 of the base 1 is energized, the electrode sheet 32 ​​can be powered through the lower spring sheet 3. In addition, the electrode sheet 32 ​​can be directly installed on the outside of the carrier 2 and cooperate with the induction sheet 14 of the base 1, and the processing and assembly are very convenient.

[0051] The electrode sheet 32 ​​and one of the spring wires 31 are also preferably formed in one piece, so as to facilitate the overall processing of the lower spring sheet 3. In the embodiment shown in the figure, the electrode sheet 32 ​​is formed in an integral L shape, and the electrode sheet 32 ​​includes two metal sheets forming an L shape, one of which is located at the bottom of the carrier 2 and connected to the spring wire 31, and the other is attached to the outside of the carrier 2. When the carrier 2 is stationary, the metal sheet located on the outside of the carrier 2 and the induction sheet 14 are relative to each other to form a capacitor. When the carrier 2 moves in the vertical direction, the entire electrode sheet 32 ​​can be driven to move in the vertical direction, so that the capacitance of the capacitor changes, and the displacement of the carrier 2 can be detected according to the change in the capacitance of the capacitor.

[0052] The utility model also relates to a base 1 and a metal frame inside the base 1. Specifically, the metal frame includes a built-in circuit 13 and the above-mentioned induction sheet 14.

[0053] The built-in circuit 13 has a plurality of connection ends, some of which extend to the outside of the base 1 for electrical connection with an external power source. In addition, the built-in circuit 13 can also be electrically connected to the lower spring sheet 3 to supply power to the electrode sheet 32.

[0054] The induction sheet 14 is also in the shape of a thin sheet and is formed integrally with the built-in circuit 13. Specifically, the induction sheet 14 is formed by bending and extending the built-in circuit 13 upward. The induction sheet 14 is used to cooperate with the electrode sheet 32 ​​to form a capacitor.

[0055] As a preferred solution, multiple sensing sheets 14 can be used to cooperate with the electrode sheets 32 to form multiple capacitors to more accurately detect the displacement of the carrier 2. The multiple sensing sheets 14 can be arranged in a vertical direction and electrically connected to the built-in circuits 13 respectively.

[0056] In the metal frame of the present invention, the sensor sheet 14 and the built-in circuit are integrally formed and installed in the base 1, which can reduce the assembly process of the sensor sheet 14 and directly embed the entire metal frame into the base 1 by injection molding.

[0057] The bottom plate 11 of the base 1 is in a rectangular plate shape, and the two side plates 12 are respectively connected to two opposite sides of the bottom plate 11 and are located at the edges of the bottom plate 11 .

[0058] The built-in circuit 13 is installed in the bottom plate 11 , and part of the connection ends are located on the bottom surface of the bottom plate 11 for connecting to an external power source, and the other part of the connection ends are located on the top surface of the bottom plate 11 for connecting to the lower spring 3 .

[0059] The sensor sheet 14 is located in one of the side plates 12 and preferably fits the inner side of the side plate 12 , or is embedded into the side plate 12 from the inner side of the side plate 12 with one side exposed to the inner side of the side plate 12 and arranged opposite to the electrode sheet 32 ​​.

[0060] In addition, part of the connection ends of the built-in circuit 13 are exposed on the top surface of the base 1 for electrical connection with the lower spring sheet 3 .

[0061] Preferably, the metal frame further includes a reinforcing plate 15, which is electrically connected to the built-in circuit 13 and is located in another side plate 12, that is, the reinforcing plate 15 and the induction plate 14 are respectively located in two different side plates 12. The reinforcing plate 15 increases the strength of the side plate and the stability of the built-in circuit.

[0062] The bottom plate 11 is further provided with four avoidance holes 17, which are respectively located at four sides of the bottom plate 11 and vertically penetrate the bottom plate 11. The four avoidance holes 17 can reduce the weight of the base 1 and can also avoid magnetic field lines.

[0063] In some embodiments, the lens focusing device 10 of the present invention also needs to cooperate with an external anti-shake device, which is generally arranged below the base 1, and a magnet is installed on the anti-shake device, and the anti-shake device is driven to prevent shaking through the cooperation of the magnet and the coil group 21 of the carrier 2. If the bottom plate 11 is set as an integral plate, it will block the magnetic field lines of the magnet of the anti-shake device, and the avoidance hole 17 of the bottom plate 11 can avoid the magnetic field lines of the magnet of the anti-shake device, thereby enhancing the driving force formed by the magnet and the coil group 21.

[0064] Furthermore, the built-in circuit 13 is distributed at the edge of the bottom plate 11 , for example, can be distributed below the side plate 12 . The avoidance hole 17 is located inside the built-in circuit 13 and below the carrier 2 .

[0065] A magnet group 5 is also installed on the top surface of the bottom plate 11, and the magnet group 5 includes two magnets, which are respectively located on opposite sides of the bottom plate 11, and the two magnets and the two side plates 12 are respectively located on different sides of the bottom plate 11. The avoidance hole 17 is located on the inner side of the two magnets and the two side plates 12, so that the magnetic field lines of the anti-shake device can pass through the avoidance hole 17.

[0066] A coil group 21 is disposed outside the carrier 2 . The coil group 21 and the magnet group 5 are arranged opposite to each other. The coil group 21 and the magnet group 5 cooperate to drive the carrier 2 to move in a vertical direction.

[0067] The coil assembly 21 is also electrically connected to the lower spring leaf 3 , and the lower spring leaf 3 is electrically connected to the built-in circuit 13 in the base 1 , that is, the built-in circuit 13 can supply power to the coil assembly 21 through the lower spring leaf 3 , and there is no need to arrange additional circuits for the coil assembly 21 .

[0068] As a preferred solution, the top surface of the bottom plate 11 is further provided with four bosses 16; the four bosses 16 are respectively located at the four corners of the bottom plate 11, and the spring wire 31 of the lower spring leaf 3 is connected to the top surface of the bosses 16. The bosses 16 protrude from the top surface of the bottom plate 11, and the spring wire 31 of the lower spring leaf 3 is connected to the bosses 16, which can support the carrier 2, so that the carrier 2 and the lower spring leaf 3 are both suspended above the bottom plate 11, so as to prevent the carrier 2 from touching the bottom plate 11 during movement, and on the other hand, provide sufficient space for the lower spring leaf 3 to deform.

[0069] 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.

[0070] 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.

[0071] 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 metal frame, the metal frame being installed in a base of a lens focusing device, characterized in that: The metal frame comprises: A built-in circuit, the built-in circuit having a plurality of connection ends, some of the connection ends extending to the outside of the base; and The induction sheet is formed by bending and extending the built-in circuit.

2. The metal frame according to claim 1, characterized in that: Part of the connection ends of the built-in circuit are exposed on the top surface of the base.

3. The metal frame according to claim 1, characterized in that: The metal frame further comprises a reinforcing plate, which is electrically connected to the built-in circuit and is located on a side opposite to the induction sheet.

4. The metal frame according to claim 1, characterized in that: The plurality of sensing plates are arranged in a vertical direction.

5. A base, characterized in that: The base comprises: Base plate; a side panel connected to a top surface of the bottom panel; and The metal frame of claim 1, wherein the built-in circuit is located inside the base plate and the connecting end extends to the outside of the base plate; The induction sheet is located inside the side plate.

6. The base according to claim 5, characterized in that: The two side panels are arranged opposite to each other; The induction sheet is located in one of the side panels. The metal frame further comprises a reinforcing plate, which is electrically connected to the built-in circuit and is located inside the other side plate.

7. The base according to claim 5, characterized in that: The bottom plate is provided with a plurality of avoidance holes, and the avoidance holes penetrate the bottom plate in a vertical direction.

8. The base according to claim 7, characterized in that: The built-in circuits are distributed at the edge of the bottom plate, and the avoidance holes are located at the inner side of the built-in circuits.

9. A lens focusing device, characterized in that: include: The base according to claim 5; A magnet group connected to the top surface of the bottom plate; A carrier, the carrier is located on the top surface of the bottom plate and is provided with a coil group, and the coil group cooperates with the magnet group to drive the carrier to move in a vertical direction; A lower spring sheet, the lower spring sheet is located between the carrier and the bottom plate and is electrically connected to the built-in circuit; as well as An electrode sheet is connected to the carrier and the lower spring sheet, and forms a capacitor with the inductive sheet.

10. The lens focusing device according to claim 9, characterized in that: The lens focusing device also includes: An upper spring sheet, the upper spring sheet is located on the top of the carrier and connected to the carrier; The outer shell covers the carrier and the upper spring sheet and is connected to the bottom plate and the upper spring sheet.

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