Lens driving structure, camera device and electronic equipment

Abstract

The present invention discloses a lens driving structure, including a base, a carrier located in the base, an upper spring sheet arranged on the top of the carrier, a coil arranged along the outer side of the carrier, a magnet arranged on the outer side of the coil, and a detection magnet is arranged on the outer side of the coil; reinforcing ribs including an internal reinforcement structure and an external reinforcement structure are arranged in the base; and a glue storage tank is arranged at the connection between the carrier and the upper spring sheet. By arranging the detection magnet and the chip on the outer side of the coil, the present invention eliminates the influence of the thickness of the coil on the distance between the detection magnet and the chip, thereby ensuring the sensing magnetic field strength of the detection magnet. The present invention also provides a glue storage tank at the connection between the upper spring sheet and the carrier, and the excess glue flows into the glue storage tank during gluing, thereby preventing the glue from overflowing and sticking to the root of the spring sheet, resulting in poor motor performance.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to a lens driving structure, a camera device and an electronic device. Background Art

[0002] The detection magnet of the existing motor using closed-loop control is installed on the inner side of the coil, the chip is installed on the outer side of the coil, and two-sided magnets or four-sided magnets are arranged on the outer side of the coil.

[0003] The defects of this magnet installation structure are:

[0004] 1. The distance between the detection magnet and the chip is affected by the thickness of the coil. The thicker the coil, the farther the detection magnet is from the chip, and the weaker the magnetic field intensity sensed by the detection magnet.

[0005] 2. When magnets are used on both sides due to space limitations, the magnetic thrust is small.

[0006] It should also be pointed out that in order to enhance the structural strength, existing motors are equipped with a single-circle reinforcing rib in the base. The defects of the existing base reinforcement structure are:

[0007] If the reinforcing ribs of the single-loop structure are arranged on the inner circle of the base, the outer circle of the base is prone to cracking; if the reinforcing ribs of the single-loop structure are arranged on the outer circle of the base, the inner circle of the base is prone to cracking.

[0008] In addition, the upper spring sheet of the existing motor is set on the top of the carrier and bonded by glue. Due to the lack of a glue storage structure between the upper spring sheet and the carrier, the glue will overflow and stick to the root of the upper spring sheet, resulting in poor motor performance. In addition, the base of the existing motor lacks a glue storage structure, which makes it difficult for the glue to penetrate and the bonding strength between the base and the shell is low. Summary of the invention

[0009] The purpose of the present invention is to provide a lens driving structure, a camera device and an electronic device to solve the problems existing in the prior art.

[0010] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0011] A lens driving structure includes a base, a carrier located in the base, an upper spring sheet arranged on the top of the carrier, a coil arranged along the outer side of the carrier, a magnet arranged on the outer side of the coil, and an installation groove for installing the detection magnet is provided on the outer side of the coil; reinforcing ribs including an internal reinforcement structure and an external reinforcement structure are provided in the base; and a glue storage groove is provided at the connection between the carrier and the upper spring sheet.

[0012] Furthermore, the base includes a plate-like body, and a glue dispensing column is respectively provided at the edge and corner positions of the plate-like body, a long installation position is provided between adjacent glue dispensing columns, and a limit plate is respectively provided in the long installation position on a group of opposite sides, and the limit plate and the side glue dispensing column form a short installation position in the long installation position.

[0013] Furthermore, a step structure is provided on the outer side of the glue dispensing column, a glue dispensing groove is provided below the step structure, and the shell is connected and fixed to the base by glue filled in the glue dispensing groove.

[0014] Furthermore, a carrier through hole is provided in the middle of the carrier, a plurality of inner connecting grooves are provided along the edge of the carrier through hole, and a plurality of outer connecting grooves are provided on the outer edge of the carrier;

[0015] The upper spring sheet is connected and fixed to the carrier by glue filled in the inner connecting groove and the outer connecting groove;

[0016] The glue storage tank is located on the carrier at the side of the outer connecting tank.

[0017] Furthermore, an annular groove is provided along the outer side surface of the carrier, a winding terminal is provided on one side of the carrier, and a mounting groove is provided on the other side of the carrier, and the mounting groove is located outside the annular groove;

[0018] The coil is arranged in the annular groove of the carrier, and both ends of the coil are respectively wound on a winding terminal.

[0019] The detection magnet is arranged in the installation groove.

[0020] Furthermore, the magnets are arranged along the edge of the base, and the magnets include long magnets and short magnets. The long magnets are arranged in the long installation positions, and the short magnets are arranged in the short installation positions.

[0021] Furthermore, a chip slot is provided on the limit plate outside the detection magnet, a limit terminal is provided on the outer side of the limit plate, and the flexible circuit board is connected to the limit plate through the limit terminal.

[0022] Furthermore, the inner reinforcement structure is arranged at the inner circle position of the base, and the inner reinforcement structure has a circular ring body, and the circular ring body is distributed along the inner circle of the base;

[0023] The outer reinforcement structure is arranged at the outer edge of the base, and the outer reinforcement structure includes a first reinforcement part and a second reinforcement part, and the first reinforcement part and the second reinforcement part are located at the outer circle position of the base.

[0024] A photographing device has the above lens driving structure.

[0025] An electronic device has the above-mentioned camera device.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. By arranging the detection magnet and the chip outside the coil, the influence of the coil thickness on the distance between the detection magnet and the chip is eliminated, thereby ensuring the sensing magnetic field strength of the detection magnet.

[0028] 2. When space is limited, a short mounting position can be set on the base, and a short magnet can be set in the short mounting position to increase the thrust.

[0029] 3. By arranging reinforcing ribs with inner and outer reinforcing structures in the base, the problem of cracking of the inner ring of the base caused by a single outer ring reinforcing rib or cracking of the outer ring caused by a single inner ring reinforcing rib in the prior art is effectively solved.

[0030] 4. By providing a glue storage tank at the connection between the upper spring sheet and the carrier, excess glue flows into the glue storage tank during gluing, preventing the glue from overflowing and sticking to the root of the spring sheet, resulting in poor motor performance.

[0031] 5. By setting a step structure and a glue dispensing groove at the glue dispensing column of the base, the glue can penetrate into the glue dispensing groove between the shell and the base along the step structure during gluing, thereby enhancing the bonding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the lens driving structure of the present invention.

[0033] Figure 2 It is a schematic diagram of the lens driving structure (excluding the housing) described in the present invention.

[0034] Figure 3 It is a schematic diagram of the base described in the present invention.

[0035] Figure 4 Schematic diagram of the vector of the present invention.

[0036] Figure 5 Schematic diagram of the vector of the present invention.

[0037] Figure 6 It is a schematic diagram of the upper spring sheet described in the present invention.

[0038] Figure 7 It is a schematic diagram of the carrier and the upper spring sheet described in the present invention.

[0039] Figure 8 Schematic diagram of the coil according to the present invention.

[0040] Fig. 9 Schematic diagram of the magnet described in the present invention.

[0041] Fig.10It is a schematic diagram of the chip slot described in the present invention.

[0042] Fig.11 This is a schematic diagram of the detection magnet, chip and flexible circuit board described in the present invention.

[0043] Fig.12 It is a schematic diagram of the position of the reinforcing ribs described in the present invention.

[0044] Fig.13 It is a schematic structural diagram of the reinforcing rib described in the present invention.

[0045] Fig.14 This is a schematic diagram of Example 2 described in the present invention.

[0046] Fig.15 This is a schematic diagram of Example 3 described in the present invention. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0048] See also Figures 1 to 13 A lens driving structure according to the present invention comprises a base (1), a carrier (2) located in the base (1), an upper spring sheet (3) arranged on the top of the carrier (2), a coil (4) arranged along the outer side of the carrier (2), a magnet (5) arranged outside the coil (4), a detection magnet (6) arranged outside the coil (4), and a chip (10) arranged on the base (1) outside the detection magnet (6);

[0049] The base (1) is provided with reinforcing ribs (7) including an inner reinforcing structure (71) and an outer reinforcing structure (72);

[0050] A glue storage groove (24) is provided at the connection between the carrier (2) and the upper spring sheet (3).

[0051] The base (1) comprises a plate-shaped body (11), and a glue-dispensing column (12) is respectively arranged at the corner positions of the plate-shaped body (11), a long installation position (13) is arranged between adjacent glue-dispensing columns (12), and a limiting plate (14) is respectively arranged in the long installation position (13) on a group of opposite sides, and the limiting plate (14) and the glue-dispensing column (12) on the side form a short installation position (15) at the long installation position (13).

[0052] A step structure (16) is provided on the outer side of the glue dispensing column (12), a glue dispensing groove (17) is provided below the step structure (16), and the housing (8) is connected and fixed to the base (1) by means of glue filled in the glue dispensing groove (17).

[0053] A carrier through hole (21) is provided in the middle of the carrier (2), a plurality of inner connecting grooves (22) are provided along the edge of the carrier through hole (21), and a plurality of outer connecting grooves (23) are provided at the outer edge of the carrier (2);

[0054] The upper spring sheet (3) is connected and fixed to the carrier (2) by means of glue filled in the inner connecting groove (22) and the outer connecting groove (23);

[0055] The glue storage groove (24) is located on the carrier (2) on the side of the outer connecting groove (23).

[0056] An annular groove (25) is provided along the outer side surface of the carrier (2), a winding terminal (26) is provided on one side of the carrier (2), and a mounting groove (27) is provided on the other side of the carrier (2), and the mounting groove (27) is located outside the annular groove (25);

[0057] The coil (4) is arranged in an annular groove (25) of the carrier (2), and both ends of the coil (4) are respectively wound around a winding terminal (26).

[0058] The detection magnet (6) is arranged in the mounting groove (27).

[0059] The magnet (5) is arranged along the edge of the base (1), and the magnet (5) comprises a long magnet (51) and a short magnet (52). The long magnet (51) is arranged in the long installation position (13), and the short magnet (52) is arranged in the short installation position (15).

[0060] A chip slot (141) is provided on the limit plate (14) outside the detection magnet (6), the chip (10) is arranged in the chip slot (141), a limit terminal (142) is provided on the outer side surface of the limit plate (14), the flexible circuit board (9) is connected to the limit plate (14) via the limit terminal (142), and the chip (10) is electrically connected to the flexible circuit board (9).

[0061] The inner reinforcement structure (71) is arranged at the inner circle position of the base (1), and the inner reinforcement structure (71) has a circular ring-shaped main body (711), and the circular ring-shaped main body (711) is distributed along the inner circle of the base (1);

[0062] The external reinforcement structure (72) is arranged at the outer edge of the base (1), and the external reinforcement structure (72) comprises a first reinforcement portion (721) and a second reinforcement portion (722), and the first reinforcement portion (721) and the second reinforcement portion (722) are located at the outer ring position of the base (1). Example 1

[0063] This embodiment discloses a lens driving structure, comprising a base (1), a carrier (2), an upper spring sheet (3), a coil (4), a magnet (5), a detection magnet (6), a chip (10), a housing (8) and a flexible circuit board (9).

[0064] The base (1) comprises a plate-shaped body (11), and a glue-dispensing column (12) is respectively arranged at the corner positions of the plate-shaped body (11), and a long installation position (13) is arranged between adjacent glue-dispensing columns (12), and a limiting plate (14) is respectively arranged in the long installation position (13) on a set of opposite sides, and the limiting plate (14) and the glue-dispensing column (12) on the side form a short installation position (15) at the long installation position (13). A step structure (16) is arranged on the outside of the glue-dispensing column (12), and a glue-dispensing groove (17) is provided below the step structure (16), and the housing (8) is connected and fixed to the base (1) by glue filled in the glue-dispensing groove (17).

[0065] In this embodiment, a step structure (16) and a glue dispensing groove (17) are provided at the glue dispensing column (12) of the base (1). During gluing, the glue can penetrate into the glue dispensing groove (17) between the shell (8) and the base (1) along the step structure (16), thereby enhancing the bonding strength.

[0066] The magnet (5) is arranged along the edge of the base (1), and the magnet (5) comprises a long magnet (51) and a short magnet (52). The long magnet (51) is arranged in the long installation position (13), and the short magnet (52) is arranged in the short installation position (15).

[0067] In the case of limited space, this embodiment increases thrust by arranging a short installation position (15) on the base (1) and arranging a short magnet (52) in the short installation position (15).

[0068] A carrier through hole (21) is provided in the middle of the carrier (2), a plurality of inner connecting grooves (22) are provided along the edge of the carrier through hole (21), and a plurality of outer connecting grooves (23) are provided at the outer edge of the carrier (2); the upper spring sheet (3) is connected and fixed to the carrier (2) by means of glue filled in the inner connecting groove (22) and the outer connecting groove (23); and the glue storage groove (24) is located on the carrier (2) on the side of the outer connecting groove (23).

[0069] In this embodiment, a glue storage groove (24) is provided at the connection between the upper spring sheet (3) and the carrier (2), so that excess glue flows into the glue storage groove (24) during gluing, thereby preventing the glue from overflowing and sticking to the root of the upper spring sheet (3), thereby causing poor motor performance.

[0070] An annular groove (25) is provided along the outer surface of the carrier (2), a winding terminal (26) is provided on one side of the carrier (2), and a mounting groove (27) is provided on the other side of the carrier (2), and the mounting groove (27) is located outside the annular groove (25); the coil (4) is arranged in the annular groove (25) of the carrier (2), and the two ends of the coil (4) are respectively wound on a winding terminal (26). The detection magnet (6) is arranged in the mounting groove (27).

[0071] A chip slot (141) is provided on the limit plate (14) outside the detection magnet (6), the chip (10) is arranged in the chip slot (141), a limit terminal (142) is provided on the outer side surface of the limit plate (14), the flexible circuit board (9) is connected to the limit plate (14) via the limit terminal (142), and the chip (10) is electrically connected to the flexible circuit board (9).

[0072] In this embodiment, by arranging both the detection magnet (6) and the chip (10) outside the coil (4), the influence of the thickness of the coil (4) on the distance between the detection magnet (6) and the chip (10) is eliminated, thereby ensuring the sensing magnetic field strength of the detection magnet (6).

[0073] The base (1) is provided with reinforcing ribs (7) including an inner reinforcing structure (71) and an outer reinforcing structure (72);

[0074] The inner reinforcement structure (71) is arranged at the inner circle position of the base (1), and the inner reinforcement structure (71) has a circular ring-shaped main body (711), and the circular ring-shaped main body (711) is distributed along the inner circle of the base (1);

[0075] The external reinforcement structure (72) is arranged at the outer edge of the base (1), and the external reinforcement structure (72) comprises a first reinforcement portion (721) and a second reinforcement portion (722), and the first reinforcement portion (721) and the second reinforcement portion (722) are located at the outer ring position of the base (1).

[0076] This embodiment effectively solves the problem of cracking of the inner ring of the base caused by a single outer ring reinforcement rib, or cracking of the outer ring caused by a single inner ring reinforcement rib in the prior art by arranging reinforcement ribs (7) with inner and outer reinforcement structures in the base (1). Example 2

[0077] A camera device has the lens driving structure as described in Example 1. In this embodiment, other structures of the camera device are the same as those in the prior art, so they will not be described in detail here. Example 3

[0078] An electronic device has the camera device as described in Example 2. In this embodiment, other structures of the electronic device are the same as those in the prior art, so they are not described in detail here.

[0079] In the above embodiments, the directions or positional relationships indicated by terms such as “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside”, “outside”, “vertical” and “horizontal” are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solutions and the convenience of description. Therefore, they should not be understood as limitations of the present invention.

[0080] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lens driving structure, comprising a base (1), a carrier (2) located in the base (1), An upper spring sheet (3) arranged on the top of the carrier (2), a coil (4) arranged along the outer side of the carrier (2), A magnet (5) is arranged outside the coil (4), Features: The outer side of the coil (4) is provided with a mounting groove (27) for mounting a detection magnet (6); an annular groove (25) is provided along the outer side surface of the carrier (2); the coil (4) is arranged in the annular groove (25) of the carrier (2); the mounting groove (27) is located on the outer side of the annular groove (25); the mounting groove (27) protrudes from the outer side surface of the carrier (2); the detection magnet (6) is arranged in the mounting groove (27); a reinforcing rib (7) including an inner reinforcing structure (71) and an outer reinforcing structure (72) is provided in the base (1); a glue storage groove (24) is provided at the connection between the carrier (2) and the upper spring sheet (3); The corner positions of the base (1) are respectively provided with a glue dispensing column (12), a long installation position (13) is provided between adjacent glue dispensing columns (12), a limiting plate (14) is respectively provided in the long installation position (13) on a set of opposite sides, and the limiting plate (14) and the glue dispensing column (12) on the side form a short installation position (15) at the long installation position (13); A step structure (16) is provided on the outer side of the glue dispensing column (12), a glue dispensing groove (17) is provided below the step structure (16), and the housing (8) is connected and fixed to the base (1) by means of glue filled in the glue dispensing groove (17).

2. The lens driving structure according to claim 1, characterized in that: The base (1) comprises a plate-shaped body (11), and a glue-dispensing column (12) is respectively arranged at the corner positions of the plate-shaped body (11), a long installation position (13) is arranged between adjacent glue-dispensing columns (12), and a limiting plate (14) is respectively arranged in the long installation position (13) on a group of opposite sides, and the limiting plate (14) and the glue-dispensing column (12) on the side form a short installation position (15) at the long installation position (13).

3. The lens driving structure according to claim 1, characterized in that: A carrier through hole (21) is provided in the middle of the carrier (2), a plurality of inner connecting grooves (22) are provided along the edge of the carrier through hole (21), and a plurality of outer connecting grooves (23) are provided at the outer edge of the carrier (2); The upper spring sheet (3) is connected and fixed to the carrier (2) by means of glue filled in the inner connecting groove (22) and the outer connecting groove (23); The glue storage groove (24) is located on the carrier (2) on the side of the outer connecting groove (23).

4. The lens driving structure according to claim 1, characterized in that: A chip slot (141) is provided on the limit plate (14) outside the detection magnet (6), a limit terminal (142) is provided on the outer side surface of the limit plate (14), and the flexible circuit board (9) is connected to the limit plate (14) via the limit terminal (142).

5. The lens driving structure according to claim 1, characterized in that: The inner reinforcement structure (71) is arranged at the inner circle position of the base (1), and the inner reinforcement structure (71) has a circular ring-shaped main body (711), and the circular ring-shaped main body (711) is distributed along the inner circle of the base (1); The external reinforcement structure (72) is arranged at the outer edge of the base (1), and the external reinforcement structure (72) comprises a first reinforcement portion (721) and a second reinforcement portion (722), and the first reinforcement portion (721) and the second reinforcement portion (722) are located at the outer ring position of the base (1).

6. A photographic device, characterized in that: A lens driving structure as claimed in any one of claims 1 to 5.

7. An electronic device, characterized in that: A photographic device as claimed in claim 6.

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