CN112003442A - Lens driving device, camera device and electronic equipment - Google Patents

Lens driving device, camera device and electronic equipment Download PDF

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Publication number
CN112003442A
CN112003442A CN202010966826.9A CN202010966826A CN112003442A CN 112003442 A CN112003442 A CN 112003442A CN 202010966826 A CN202010966826 A CN 202010966826A CN 112003442 A CN112003442 A CN 112003442A
Authority
CN
China
Prior art keywords
carrier
main body
limiting
lens driving
driving device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010966826.9A
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Chinese (zh)
Inventor
王在伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Shicoh Motor Co Ltd
New Shicoh Technology Co Ltd
Original Assignee
New Shicoh Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by New Shicoh Technology Co Ltd filed Critical New Shicoh Technology Co Ltd
Priority to CN202010966826.9A priority Critical patent/CN112003442A/en
Publication of CN112003442A publication Critical patent/CN112003442A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

The invention discloses a lens driving device which comprises a carrier, a plurality of inner ring magnets distributed along the outer side of the carrier, a plurality of coils arranged on the outer sides of the inner ring magnets, a plurality of outer ring magnets arranged on the outer sides of the coils, and a yoke ring sleeved on the outer sides of the carrier, the inner ring magnets, the coils and the outer ring magnets. The magnet of the invention is provided with two layers, namely an inner ring magnet and an outer ring magnet. The inner ring magnets are distributed along the outer circumferential surface of the carrier, the coil is distributed along the outer ring of the inner ring magnets, and the outer ring magnets are distributed along the outer circumferential surface of the coil. Compared with the prior art, the magnetic field distribution is more uniform under the condition that the total thickness of the magnets is the same. Under the condition of a uniform magnetic field, the linearity of the driving structure is better.

Description

Lens driving device, camera device and electronic equipment
Technical Field
The present invention relates to the field of motors, and more particularly, to a lens driving device, a camera device, and an electronic apparatus.
Background
The motor has limited internal installation space, and the existing driving structure basically distributes coils outside a carrier and then distributes magnets on four sides or four corners outside the coils. The distribution structure of the coil and the magnets has the following defects: the thrust of a large motor product in the automatic focusing process is insufficient, and the driving performance of the motor is affected.
Disclosure of Invention
The present invention is directed to a lens driving device, a driving device and an electronic apparatus, which are used to solve the problems of the prior art.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a lens driving device comprises a carrier and a lens driving device
A plurality of inner ring magnets distributed along the outer side of the carrier,
a plurality of coils arranged on the outer side of the inner ring magnet,
a plurality of outer ring magnets arranged outside the coils,
and the magnetic yoke ring is sleeved on the outer sides of the carrier, the inner ring magnet, the coil and the outer ring magnet.
Furthermore, the carrier comprises a hollow main body, a plurality of limiting bulges are uniformly distributed along the outer circumferential surface of the hollow main body, and a limiting ring is arranged along the edge of the bottom of the hollow main body.
The top of the limiting bulge is flush with the top of the hollow main body, and the bottom of the limiting bulge is connected with the upper surface of the limiting ring; the plurality of limiting bulges and the limiting ring form a plurality of mounting grooves on the outer circumferential surface of the hollow main body;
the inner ring magnet is arranged in the mounting groove.
The magnet yoke further comprises an upper elastic sheet, wherein the upper elastic sheet is arranged at the tops of the carrier, the inner ring magnet, the coil and the outer ring magnet, and the upper surface of the upper elastic sheet is connected with the inner surface of the magnet yoke ring.
Furthermore, the device also comprises a lower elastic sheet which is positioned below the carrier and arranged in the base.
The carrier is arranged on the bottom of the carrier, the base comprises a plate-shaped main body, a through round hole is formed in the middle of the plate-shaped main body, and a limit groove is formed in the edge of the through round hole;
the four corners of the base are respectively provided with a connecting groove which is communicated with the limiting groove;
the lower elastic sheet is arranged in the limiting groove and the connecting groove.
Furthermore, the through round hole of the base is opposite to the hollow main body of the carrier.
The terminal is provided with a first connecting end and a second connecting end, the first connecting end is arranged in the connecting groove of the base and is connected with the lower elastic sheet, and the second connecting end extends to the lower portion of the base.
Furthermore, the lower elastic sheet is connected with the first connecting end of the terminal through dispensing.
A driving device has the lens driving device with the structure.
An electronic apparatus having the above-described driving device.
Compared with the prior art, the invention has the beneficial effects that:
1. under the condition of the same total thickness of the magnets, the magnetic field distribution is more uniform. Under the condition of a uniform magnetic field, the linearity of the driving structure is better.
2. Under the same condition of the total thickness of the magnets, the magnetic flux is increased by about 20%, the magnetic force is increased by 20%, the thrust of the motor is increased by about 20%, the power consumption is reduced, the total volume occupied by the magnets is smaller, and raw materials are saved.
3. The magnetic field intensity is correspondingly enhanced when the number of the magnet pieces is increased.
Drawings
Fig. 1 is a schematic view of a lens driving apparatus according to the present invention.
Fig. 2 is a schematic diagram of a lens driving apparatus (without a yoke ring) according to the present invention.
FIG. 3 is a schematic structural diagram of the vector of the present invention.
FIG. 4 is a schematic view of an inner ring magnet according to the present invention.
Fig. 5 is a schematic view of a coil according to the present invention.
Fig. 6 is a schematic view of an outer ring magnet according to the present invention.
Fig. 7 is a schematic view of a yoke ring according to the present invention.
Fig. 8 is a schematic position diagram of the upper spring plate according to the present invention.
Fig. 9 is a schematic structural view of the upper spring plate according to the present invention.
Fig. 10 is a schematic position diagram of the lower spring plate according to the present invention.
Fig. 11 is a schematic structural view of the lower spring plate according to the present invention.
Fig. 12 is a schematic view of a base according to the present invention.
Fig. 13 is a schematic view of a terminal according to the present invention.
Fig. 14 is a schematic position diagram of the lower spring, the base and the terminal according to the present invention.
Fig. 15 is a schematic structural view of the square structure according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 11, the lens driving device of the present invention comprises a carrier (1), and further comprises a plurality of inner ring magnets (2) distributed along the outer side of the carrier (1),
a plurality of coils (3) arranged outside the inner ring magnet (2),
a plurality of outer ring magnets (4) arranged outside the coil (3),
and the magnetic yoke ring (5) is sleeved on the outer sides of the carrier (1), the inner ring magnet (2), the coil (3) and the outer ring magnet (4).
The carrier (1) comprises a hollow main body (11), a plurality of limiting bulges (12) are uniformly distributed along the outer circumferential surface of the hollow main body (11), and a limiting ring (13) is arranged along the bottom edge of the hollow main body (11).
The top of the limiting bulge (12) is flush with the top of the hollow main body (11), and the bottom of the limiting bulge (12) is connected with the upper surface of the limiting ring (13); the limiting bulges (12) and the limiting ring (13) form a plurality of mounting grooves (14) on the outer circumferential surface of the hollow main body (11);
the inner ring magnet (2) is arranged in the mounting groove (14).
An upper elastic sheet (6) is arranged at the top of the carrier (1), the inner ring magnet (2), the coil (3) and the outer ring magnet (4), and the upper surface of the upper elastic sheet (6) is connected with the inner surface of the yoke ring (5).
A lower elastic sheet (7) is arranged below the carrier (1), and the lower elastic sheet (7) is arranged in the base (8).
A base (8) is arranged at the bottom of the carrier (1), the base (8) comprises a plate-shaped main body (81), a through round hole (82) is formed in the middle of the plate-shaped main body (81), and a limiting groove (83) is formed along the edge of the through round hole (82);
four corners of the base (8) are respectively provided with a connecting groove (84), and the connecting grooves (84) are communicated with the limiting grooves (83);
the lower elastic sheet (7) is arranged in the limiting groove (83) and the connecting groove (84).
The through round hole (82) of the base (8) is opposite to the hollow main body (11) of the carrier (1).
The invention further comprises the terminal (9), the terminal (9) is provided with a first connecting end (91) and a second connecting end (92), the first connecting end (91) is arranged in the connecting groove (84) of the base (8) and is connected with the lower elastic sheet (7), and the second connecting end (92) extends to the lower part of the base (8).
The lower elastic sheet (7) is connected with the first connecting end (91) of the terminal (9) through dispensing.
Example 1
A lens driving device comprises a carrier (1), an inner ring magnet (2), a coil (3), an outer ring magnet (4), a yoke ring (5), an upper elastic sheet (6), a lower elastic sheet (7), a base (8) and a terminal (9).
Referring to fig. 3, the carrier (1) comprises a hollow main body (11), a plurality of limiting protrusions (12) are uniformly distributed along the outer circumferential surface of the hollow main body (11), and a limiting ring (13) is arranged along the bottom edge of the hollow main body (11). The top of the limiting bulge (12) is flush with the top of the hollow main body (11), and the bottom of the limiting bulge (12) is connected with the upper surface of the limiting ring (13); the limiting bulges (12) and the limiting ring (13) form a plurality of mounting grooves (14) on the outer circumferential surface of the hollow main body (11); the inner ring magnet (2) is arranged in the mounting groove (14). An upper elastic sheet (6) is arranged at the top of the carrier (1), the inner ring magnet (2), the coil (3) and the outer ring magnet (4), and the upper surface of the upper elastic sheet (6) is connected with the inner surface of the yoke ring (5).
Referring to fig. 4, 5, 6 and 7, the magnets (2) on the inner ring, the coils (3) and the magnets (4) on the outer ring are uniformly distributed along the outer side of the carrier (1) from inside to outside in sequence. Specifically, the inner ring magnet (2), the coil (3) and the outer ring magnet (4) are of radian structures matched with the outer surface of the hollow main body (11), so that a good installation effect is achieved. After the inner ring magnet (2), the coil (3) and the outer ring magnet (4) are installed, a yoke ring (5) is arranged on the outermost side.
Referring to fig. 8 and 9, the upper spring (6) is disposed on the top of the carrier (1), the inner ring magnet (2), the coil (3) and the outer ring magnet (4), the lower surface of the lower spring (6) is located above the carrier (1), the inner ring magnet (2), the coil (3) and the outer ring magnet (4), and the upper surface of the upper spring (6) is connected with the inner surface of the yoke ring (5).
Referring to fig. 10 and 11, the lower elastic sheet (7) is arranged in the base (8) below the carrier (1).
Referring to fig. 12, the base (8) is arranged at the bottom of the carrier (1), the base (8) comprises a plate-shaped main body (81), a through round hole (82) is formed in the middle of the plate-shaped main body (81), and a limit groove (83) is formed along the edge of the through round hole (82); four corners of the base (8) are respectively provided with a connecting groove (84), and the connecting grooves (84) are communicated with the limiting grooves (83); the lower elastic sheet (7) is arranged in the limiting groove (83) and the connecting groove (84). The through round hole (82) of the base (8) is opposite to the hollow main body (11) of the carrier (1).
Referring to fig. 13 and 14, the terminal (9) has a first connection end (91) and a second connection end (92), the first connection end (91) is disposed in the connection groove (84) of the base (8) and connected with the lower spring plate (7), and the second connection end (92) extends to the lower side of the base (8).
The lower elastic sheet (7) is connected with the first connecting end (91) of the terminal (9) through dispensing.
In the embodiment, the magnets are provided with two layers, namely an inner ring magnet (2) and an outer ring magnet (4). The inner ring magnets (2) are distributed along the outer circumferential surface of the carrier (1), the coils (3) are distributed along the outer ring of the inner ring magnets (2), and the outer ring magnets (4) are distributed along the outer circumferential surface of the coils (3). Compared with the scheme that the coils in the background technology are distributed along the surface of the carrier, and the magnets are distributed on four sides or four corners of the shell, the magnet distribution structure has the following advantages:
1. the inner ring magnet (2) and the outer ring magnet (4) of the embodiment are connected in an end-to-end manner to form a circular ring, and compared with the four sides or four corners of the dispersed magnets in the prior art, the magnetic field distribution is more uniform. Under the condition of a uniform magnetic field, the linearity of the driving structure is better.
2. Under the same condition of the total thickness of the magnets, the magnetic flux is increased by about 20%, the magnetic force is increased by 20%, the thrust of the motor is increased by about 20%, the power consumption is reduced, the total volume occupied by the magnets is smaller, and raw materials are saved.
3. The magnet distribution structure of inner circle and outer lane, the magnetite number of pieces can corresponding increase, and magnetic field intensity can corresponding reinforcing.
In the present embodiment, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the purpose of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.
Example 2
A driving apparatus having the lens driving apparatus as described in embodiment 1. In the present embodiment, other structures of the driving device are the same as those of the prior art, and therefore, detailed description thereof is omitted.
Example 3
An electronic device having the driving apparatus as described in embodiment 2. In the embodiment, other structures of the electronic device are the same as those of the prior art, and therefore, detailed description thereof is omitted.
In the present invention, the hollow main body may be cylindrical or may be provided with other shapes, as long as other structures capable of realizing the functions of the present invention are all possible, for example, the square structure shown in fig. 15, if the hollow main body is a square structure, the limiting protrusion (12) may be located at a corner of the hollow main body, the mounting groove (14) is located at a side edge of the hollow main body, and the magnetic yoke, the magnet, the spring plate, and the coil may be changed correspondingly according to the change of the structure.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. A lens driving device comprising a carrier (1), characterized in that: also comprises
A plurality of inner ring magnets (2) distributed along the outer side of the carrier (1),
a plurality of coils (3) arranged outside the inner ring magnet (2),
a plurality of outer ring magnets (4) arranged outside the coil (3),
and the magnetic yoke ring (5) is sleeved on the outer sides of the carrier (1), the inner ring magnet (2), the coil (3) and the outer ring magnet (4).
2. The lens driving device according to claim 1, wherein: the carrier (1) comprises a hollow main body (11), a plurality of limiting bulges (12) are uniformly distributed along the peripheral surface of the hollow main body (11), and a limiting ring (13) is arranged along the bottom edge of the hollow main body (11).
The top of the limiting bulge (12) is flush with the top of the hollow main body (11), and the bottom of the limiting bulge (12) is connected with the upper surface of the limiting ring (13); the plurality of limiting bulges (12) and the limiting ring (13) form a plurality of mounting grooves (14) on the peripheral surface of the hollow main body (11);
the inner ring magnet (2) is arranged in the mounting groove (14).
3. The lens driving device according to claim 1, wherein: the magnetic coil is characterized by further comprising an upper elastic sheet (6) arranged at the tops of the carrier (1), the inner ring magnet (2), the coil (3) and the outer ring magnet (4), wherein the upper surface of the upper elastic sheet (6) is connected with the inner surface of the yoke ring (5).
4. The lens driving device according to claim 2, wherein: the device also comprises a lower elastic sheet (7) positioned below the carrier (1), wherein the lower elastic sheet (7) is arranged in the base (8).
5. The lens driving device according to claim 4, wherein: the base (8) is arranged at the bottom of the carrier (1), the base (8) comprises a plate-shaped main body (81), a through round hole (82) is formed in the middle of the plate-shaped main body (81), and a limiting groove (83) is formed along the edge of the through round hole (82);
four corners of the base (8) are respectively provided with a connecting groove (84), and the connecting grooves (84) are communicated with the limiting grooves (83);
the lower elastic sheet (7) is arranged in the limiting groove (83) and the connecting groove (84).
6. The lens driving device according to claim 5, wherein: the through round hole (82) of the base (8) is opposite to the hollow main body (11) of the carrier (1).
7. The lens driving device according to claim 5, wherein: the spring plate type switch is characterized by further comprising a terminal (9) with a first connecting end (91) and a second connecting end (92), wherein the first connecting end (91) is arranged in a connecting groove (84) of the base (8) and is connected with the lower spring plate (7), and the second connecting end (92) extends to the lower portion of the base (8).
8. A photographic apparatus, characterized in that: having a lens driving device as claimed in any one of claims 1-7.
9. An electronic device, characterized in that: the camera device according to claim 8.
CN202010966826.9A 2020-09-15 2020-09-15 Lens driving device, camera device and electronic equipment Pending CN112003442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010966826.9A CN112003442A (en) 2020-09-15 2020-09-15 Lens driving device, camera device and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010966826.9A CN112003442A (en) 2020-09-15 2020-09-15 Lens driving device, camera device and electronic equipment

Publications (1)

Publication Number Publication Date
CN112003442A true CN112003442A (en) 2020-11-27

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ID=73468657

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010966826.9A Pending CN112003442A (en) 2020-09-15 2020-09-15 Lens driving device, camera device and electronic equipment

Country Status (1)

Country Link
CN (1) CN112003442A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113242380A (en) * 2021-06-30 2021-08-10 维沃移动通信有限公司 Camera module and electronic equipment
CN113448051A (en) * 2021-06-30 2021-09-28 新思考电机有限公司 Lens driving device, camera device and electronic equipment
CN113489173A (en) * 2021-06-30 2021-10-08 新思考电机有限公司 Magnet structure, lens driving device, camera device and electronic equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113242380A (en) * 2021-06-30 2021-08-10 维沃移动通信有限公司 Camera module and electronic equipment
CN113448051A (en) * 2021-06-30 2021-09-28 新思考电机有限公司 Lens driving device, camera device and electronic equipment
CN113489173A (en) * 2021-06-30 2021-10-08 新思考电机有限公司 Magnet structure, lens driving device, camera device and electronic equipment

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