Lens focusing device and base thereof

Abstract

The utility model discloses a lens focusing device and a pedestal thereof. The lens focusing device comprises a pedestal, a magnet group, a carrier, a lower reed, an upper reed and a housing. The base is provided with a plurality of receding holes, and the receding holes penetrate through the base in the vertical direction. And the magnet group is connected with the base. The carrier is arranged above the bottom plate and is provided with a coil group; and the coil group is matched with the magnet group to drive the carrier to move along the vertical direction. And the lower reed is positioned between the base and the carrier and is connected with the base and the carrier. And the upper reed is positioned at the top of the carrier and is connected with the carrier. And the shell covers the carrier, the upper reed and the lower reed and is connected with the base.

Description

Technical Field

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

[0002] With the development of technology, many current electronic devices (such as smart phones or digital cameras) have the functions of taking pictures or videos. The use of these electronic devices is becoming more and more common, and they are developing towards the design directions of convenience, thinness and lightness to provide users with more choices.

[0003] Some electronic devices with the functions of taking pictures or videos are provided with a lens driving module to drive an optical component such as a lens to move, so as to achieve the functions of autofocus (AF) and optical image stabilization (OIS). Light can pass through the foregoing optical component to form an image on a photosensitive component.

[0004] In the prior art, sometimes a lens focusing device needs to be configured with an anti-shake device for anti-shake. The anti-shake device is installed at the bottom of the lens focusing device and is provided with a magnet. The magnet needs to pass through the base of the lens focusing device to cooperate with the coil group of the lens focusing device, and the base will hinder the magnetic field lines of the magnet from passing through, affecting anti-shake. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a lens focusing device and a base thereof to solve the problems of the prior art.

[0006] To solve the above technical problems, an embodiment of the utility model provides a base for a lens focusing device. The base is provided with a plurality of avoidance holes, and the avoidance holes penetrate through the base in the vertical direction.

[0007] In one embodiment, the base includes:

[0008] A bottom plate provided with a plurality of the avoidance holes;

[0009] A plurality of limit members located at the edge of the bottom plate.

[0010] In one embodiment, the bottom plate is a rectangular plate and is provided with a light-transmitting hole at the center;

[0011] The limit members are located at the corners of the bottom plate;

[0012] A plurality of the avoidance holes are arranged around the light-transmitting hole and are located at the side of the bottom plate.

[0013] In one embodiment, the base further includes a plurality of bosses connected to the top surface of the bottom plate.

[0014] The present utility model also relates to a lens focusing device, comprising:

[0015] The above-mentioned base;

[0016] A magnet group, the magnet group being connected to the base;

[0017] A carrier, the carrier being installed above the bottom plate and provided with a coil group, the coil group cooperating with the magnet group to drive the carrier to move in the vertical direction;

[0018] A lower spring piece, the lower spring piece being located between the base and the carrier and connected to the base and the carrier;

[0019] An upper spring piece, the upper spring piece being located at the top of the carrier and connected to the carrier;

[0020] A housing, the housing covering the carrier, the upper spring piece, and the lower spring piece and being connected to the base.

[0021] In one embodiment, the base comprises:

[0022] A bottom plate, the bottom plate being provided with a plurality of the avoidance holes;

[0023] A plurality of limiting members, the plurality of limiting members being located at the edge of the bottom plate;

[0024] The housing covers the outside of the plurality of limiting members.

[0025] In one embodiment, the bottom plate is a rectangular plate;

[0026] The limiting members are located at the corners of the bottom plate;

[0027] The avoidance holes are located at the sides of the bottom plate;

[0028] The magnet group comprises a plurality of magnets, the magnets being connected to the side edge of the bottom plate;

[0029] The carrier is located between the plurality of magnets.

[0030] In one embodiment, the four magnets are respectively located at the four side edges of the bottom plate;

[0031] The four avoidance holes are respectively located at the four sides of the bottom plate;

[0032] At least a part of each of the avoidance holes is located below the coil group.

[0033] In one embodiment, the base further comprises a plurality of bosses, the plurality of bosses being connected to the top surface of the bottom plate;

[0034] The lower spring piece is connected to the top of the boss.

[0035] In one embodiment, an internal circuit is further provided in the base, and the internal circuit is electrically connected to the lower spring piece;

[0036] The lower spring piece is electrically connected to the coil group.

[0037] The base of the present utility model is provided with an avoidance hole to avoid the magnetic field lines of the magnet of the anti-shake component, so that it can pass through the base and cooperate with the coil group of the carrier for anti-shake. The lens focusing device of the present utility model can be used alone or in combination with the anti-shake component. Description of the Drawings

[0038] Figure 1 is an assembly drawing of the lens focusing device according to an embodiment of the present utility model.

[0039] Figure 2 and Figure 3 are respectively Figure 1 exploded views of the lens focusing device in the illustrated embodiment.

[0040] Figure 4 is Figure 2 an assembly drawing of the base, the magnet group, the coil group, the carrier and the lower spring piece in the illustrated embodiment.

[0041] Figure 5 is Figure 2 a perspective view of the base in the illustrated embodiment.

[0042] Reference numerals: 10, lens focusing device; 1, base; 11, bottom plate; 12, limiting member; 13, avoidance hole; 14, light-transmitting hole; 15, boss; 2, carrier; 3, upper spring piece; 4, lower spring piece; 5, housing; 6, magnet group; 7, coil group; Detailed Embodiments

[0043] To make the objectives, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be described in detail below with reference to the drawings. However, those of ordinary skill in the art can understand that in the embodiments of the present utility model, many technical details are presented for the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in each claim of the present application can still be implemented.

[0044] Unless the context requires otherwise, throughout the specification and claims, the word "comprising" and its variants, such as "including" and "having", should be understood in an open, inclusive sense, i.e., construed as "including, but not limited to".

[0045] The following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings, so as to more clearly understand the purpose, features and advantages of the present utility model. It should be understood that the embodiments shown in the drawings are not a limitation on the scope of the present utility model, but only to illustrate the essential spirit of the technical solution of the present utility model.

[0046] References throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" throughout this specification are not necessarily all referring to the same embodiment. Additionally, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0047] As used in this specification and the appended claims, the singular forms "a" and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally used in its inclusive sense of "and / or" unless the context clearly dictates otherwise.

[0048] In the following description, in order to clearly show the structure and working mode of the present utility model, many directional terms will be used for description. However, terms such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as limiting terms.

[0049] The present utility model relates to a lens focusing device 10, which includes a base 1, a carrier 2, a magnet group 6, a coil group 7, an upper spring piece 3, a lower spring piece 4, and a housing 5.

[0050] The base 1 is used to support the carrier 2. The carrier 2 is located above the base 1 and is used to mount the lens. The lower spring piece 4 is located between the base 1 and the carrier 2 and can support the carrier 2. The upper spring piece 3 is located at the top of the carrier 2, and both the upper spring piece 3 and the lower spring piece 4 are elastic. The housing 5 covers the outside of the carrier 2, the upper spring piece 3, and the lower spring piece 4 and is connected to the base 1.

[0051] The magnet group 6 is fixedly installed on the base 1, and the coil group 7 is installed on the carrier 2. The coil group 7 and the magnet group 6 cooperate to drive the carrier 2 to move in the vertical direction, which is also the optical axis direction of the lens. When the carrier 2 moves, it can drive the lens to focus.

[0052] One part of the upper spring piece 3 is connected to the top wall or side wall of the housing 5, and one part is connected to the top of the carrier 2. After the carrier 2 moves in the vertical direction, the upper spring piece 3 and the lower spring piece 4 can drive the carrier 2 to reset.

[0053] The base 1 is provided with a plurality of avoidance holes 13, and the avoidance holes 13 penetrate through the base 1 in the vertical direction.

[0054] In some embodiments, the lens focusing device 10 of the present utility model needs to be configured with an anti-shake component. The anti-shake component is installed at the bottom of the base 1 and has additional magnets installed therein. These magnets need to cooperate with the coil group 7 of the carrier 2 for anti-shake. The base 1 will isolate the magnetic field lines of the magnets. The base 1 is provided with avoidance holes 13 to avoid the magnetic field lines of the magnets so that they can pass through the base 1 and cooperate with the coil group 7 of the carrier 2 for anti-shake. The lens focusing device 10 of the present utility model can be used alone or in combination with the anti-shake component.

[0055] In Figures 1-5 In the illustrated embodiment, the base 1 includes a rectangular bottom plate 11 and limit members 12 located at the four corners of the bottom plate 11. The bottom plate 11 is plate-shaped and has a circular light-transmitting hole 14 at its center. The four limit members 12 are respectively located at the edges of the bottom plate 11, protrude from the top surface of the bottom plate 11, and abut against the inner side wall of the outer shell 5. The outer shell 5 covers the outside of the four limit members 12.

[0056] The four avoidance holes 13 are arranged at intervals around the light-transmitting hole 14 and are located at the side part of the bottom plate 11. The inner side walls of the four avoidance holes 13 are arc-shaped and are adjacent to the inner wall of the light-transmitting hole 14. The carrier 2 is located above a part of the four avoidance holes 13, and the coil group 7 of the carrier 2 is also located above the avoidance holes 13. The magnetic field lines of the magnets inside the anti-shake component located at the bottom of the base 1 can pass through the light-transmitting hole 14 and cooperate with the coil group 7 to generate a driving force for the anti-shake component.

[0057] The magnet group 6 includes four magnets. The four magnets are respectively connected to the edges of the four side parts of the bottom plate 11, and the four magnets surround to form a ring. The inner side of each magnet is located above the corresponding avoidance hole 13.

[0058] The carrier 2 is located inside the ring formed by the four magnets, and the coil group 7 extends along the radial outer side of the carrier 2, that is, the coil group 7 is also located above the avoidance holes 13.

[0059] In other embodiments, the bottom plate 11 is a circular plate, the carrier is a circular ring-shaped frame, and the coil group is arranged around the outside of the carrier. The avoidance holes can also be arranged in a circular ring shape formed around the light-transmitting hole, and the positions of the avoidance holes need to be set below the coil group. At least a part of the avoidance holes is located below the coil group, or all of them are located below the coil group.

[0060] In addition, the base 1 further includes four bosses 15. The four bosses 15 are respectively connected to the top surface of the bottom plate 11 and are located at the four corners of the bottom plate 11. The four bosses 15 are respectively located inside the four limit members 12. The lower spring piece 4 is connected to the top of the bosses 15. The four bosses 15 make the lower spring piece 4 suspended above the top surface of the bottom plate 11, prevent the carrier 2 from touching the bottom plate 11 during movement, and also provide a deformation space for the lower spring piece 4.

[0061] As a preferred solution, an internal circuit is further provided in the base 1, and the internal circuit can be electrically connected to an external power cord. In addition, the lower reed 4 is also electrically connected to the internal circuit and the coil group 7, and the internal circuit can supply power to the coil group 7 through the lower reed 4.

[0062] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that, if necessary, aspects of the embodiments can be modified to adopt aspects, features, and concepts of various patents, applications, and publications to provide additional embodiments.

[0063] In view of the above detailed description, these and other changes can be made to the embodiments. Generally speaking, in the claims, the terms used should not be construed as being limited to the specific embodiments disclosed in the specification and the claims, but should be understood to include all possible embodiments together with the full equivalent scope enjoyed by these claims.

[0064] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A base, the base being used for a lens focusing device, characterized in that: The base is provided with a plurality of avoidance holes, and the avoidance holes penetrate the base in a vertical direction.

2. The base according to claim 1, characterized in that: The base comprises: A bottom plate, wherein the bottom plate is provided with a plurality of the avoidance holes; A plurality of limiting members are provided, wherein the plurality of limiting members are located at the edge of the bottom plate.

3. The base according to claim 2, characterized in that: The bottom plate is a rectangular plate with a light-transmitting hole at the center; The limiting member is located at a corner of the bottom plate; A plurality of avoidance holes are arranged around the light transmission hole and are located on the side of the bottom plate.

4. The base according to claim 2, characterized in that: The base also includes a plurality of bosses, and the plurality of bosses are connected to the top surface of the bottom plate.

5. A lens focusing device, characterized in that: include: The base according to claim 1; A magnet group, the magnet group is connected to the base; A carrier, the carrier is installed above 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 base and the carrier and connected to the base and the carrier; An upper spring sheet, the upper spring sheet is located on the top of the carrier and connected to the carrier; A shell is covered on the carrier, the upper spring sheet, and the lower spring sheet and is connected to the base.

6. The lens focusing device according to claim 5, characterized in that: The base comprises: A bottom plate, wherein the bottom plate is provided with a plurality of the avoidance holes; A plurality of limiting members, wherein the plurality of limiting members are located at the edge of the bottom plate; The outer shell covers the outer sides of the plurality of limiting members.

7. The lens focusing device according to claim 6, characterized in that: The bottom plate is a rectangular plate; The limiting member is located at a corner of the bottom plate; The avoidance hole is located at the side of the bottom plate; The magnet group includes a plurality of magnets, and the magnets are connected to the side edges of the bottom plate; The carrier is located between the plurality of magnets.

8. The lens focusing device according to claim 7, characterized in that: The four magnets are respectively located on the four side edges of the bottom plate; The four avoidance holes are respectively located on four sides of the bottom plate; At least a portion of each of the avoidance holes is located below the coil assembly.

9. The lens focusing device according to claim 5, characterized in that: The base further comprises a plurality of bosses, and the plurality of bosses are connected to the top surface of the bottom plate; The lower spring leaf is connected to the top of the boss.

10. The lens focusing device according to claim 5, characterized in that: The base is also provided with a built-in circuit, and the built-in circuit is electrically connected to the lower spring sheet; The lower spring sheet is electrically connected to the coil assembly.

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