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WO2018123815A1 - Appareil d'entraînement de lentille - Google Patents

Appareil d'entraînement de lentille Download PDF

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Publication number
WO2018123815A1
WO2018123815A1 PCT/JP2017/045956 JP2017045956W WO2018123815A1 WO 2018123815 A1 WO2018123815 A1 WO 2018123815A1 JP 2017045956 W JP2017045956 W JP 2017045956W WO 2018123815 A1 WO2018123815 A1 WO 2018123815A1
Authority
WO
WIPO (PCT)
Prior art keywords
base member
conductive
lens
coil
conductive pattern
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.)
Ceased
Application number
PCT/JP2017/045956
Other languages
English (en)
Japanese (ja)
Inventor
彰良 猿舘
幸雄 牛山
達也 大場
尚樹 北浦
石黒　克之
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.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric 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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to CN201780080946.5A priority Critical patent/CN110140083B/zh
Priority to JP2018559126A priority patent/JP6678252B2/ja
Publication of WO2018123815A1 publication Critical patent/WO2018123815A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing

Definitions

  • the present invention relates to a lens driving device in which a lens holding member is moved by energizing a coil from an external terminal portion formed of a metal piece embedded in a base member.
  • Patent Document 1 describes an invention relating to a lens driving device.
  • a first coil is wound around a lens holder that holds a lens body.
  • the lens holder is provided inside an outer yoke having a magnet, and the lens holder is supported by the upper leaf spring and the lower leaf spring so as to be movable in the optical axis direction inside the outer yoke.
  • FPC flexible printed circuit board
  • the magnetic detection element is fixed to the lower surface of the FPC.
  • a second coil holding member is overlaid on the FPC, and a second coil that is a printed coil is provided on the second coil holding member.
  • An extension portion is provided in the FPC, and is wired to the second coil and the magnetic detection element via the FPC routing pattern.
  • the first coil is also energized from the FPC routing pattern via the suspension wire and the upper leaf spring.
  • this lens driving device a movement in a direction crossing the optical axis of an autofocus actuator supported by a suspension wire is detected by a magnetic detection element, and a current to cancel the movement is applied to the second coil, so-called Camera shake correction is performed. Further, the lens holder is driven in the optical axis direction by the current applied to the first coil, and focus correction is performed.
  • This type of lens driving device is required to provide various wiring paths including a wiring path to the second coil, a wiring path to the magnetic sensing element, and a wiring path to the first coil.
  • a plurality of wiring paths can be configured by overlapping FPCs on the lower case.
  • An object of the present invention is to solve the above-described conventional problems, and to provide a lens driving device that can realize a plurality of wiring paths to a coil, a magnetic detection element, and the like with a small number of parts.
  • the present invention includes a base member, a lens holding member capable of holding a lens body, and a driving mechanism for moving the lens holding member, and the driving mechanism includes a magnet and a coil.
  • the base member is formed of an insulating material, a first metal piece is embedded in the base member, and an external terminal portion and a conductive portion are formed in the first metal piece; The external terminal portion is exposed to the outside from the base member; A conductive pattern is formed on the surface of the base member, the conductive pattern is connected to the conductive portion, and the coil is conductive to the conductive pattern.
  • the surface of the base member has a first surface and a second surface at a position higher than the first surface, It is preferable that the conductive portion of the first metal piece and the conductive pattern are connected to each other on the first surface, and the conductive pattern is formed from the first surface to the second surface.
  • an inclined surface is formed between the first surface and the second surface, and the conductive pattern is formed on the second surface from the first surface through the inclined surface. Is preferred.
  • a rising angle of the inclined surface from the first surface is 45 degrees or less.
  • the movable portion on which the lens holding member is mounted is supported by the base member via an elastic support member, the magnet is mounted on the movable portion, and the coil facing the magnet
  • An insulating substrate having the base member is overlaid on the base member; The conductive pattern and a connection conductive portion formed on the insulating substrate are joined, and the conductive pattern is electrically connected to the coil via the wiring pattern of the insulating substrate.
  • the movable portion on which the lens holding member is mounted is supported by the base member via an elastic support member, the magnet is mounted on the movable portion, and faces the magnet.
  • An insulating substrate having a magnetic sensing element facing the coil and the magnet is overlaid on the base member, The conductive pattern formed on the second surface and the connection conductive portion formed on the insulating substrate are joined, and a part of the conductive pattern is conducted to the coil through the wiring pattern of the insulating substrate. The other part of the conductive pattern is electrically connected to the magnetic sensing element through the wiring pattern of the insulating substrate.
  • the magnetic detection element is opposed to the first surface of the base member.
  • the insulating substrate is a laminated substrate in which a plurality of insulating sheets are laminated, and the coil is configured by a coil conductor formed on each of the insulating sheets. .
  • the insulating substrate is divided into a plurality of pieces, and the relay conductive pattern provided on each of the insulating substrates is provided via a relay conductive pattern provided on the surface of the base member.
  • the parts may be electrically connected to each other.
  • the movable portion on which the lens holding member is mounted is supported by the base member via a suspension wire, the magnet is mounted on the movable portion, and the coil is disposed on the base member side.
  • a second metal piece for supporting the suspension wire is embedded in the base member, and the second metal piece is formed of the same metal plate as the first metal piece, and the second metal piece and the first metal piece are formed.
  • electrical_connection part of a metal piece is located in the surface of the same height.
  • a wiring path is configured by combining a metal piece embedded in the base member and a conductive pattern formed on the surface of the base member. Therefore, it is possible to effectively configure a large number of wiring paths without using an FPC or the like.
  • FIG. 5 is a cross-sectional view of the base structure portion including the base member shown in FIG. 4 taken along line VI-VI.
  • the lens driving device 1 shown in FIG. 1 is mounted together with an image sensor on a portable telephone or a portable information terminal device.
  • a lens body (lens barrel) facing the image sensor can be mounted on the lens holder 31 of the lens driving device 1.
  • the lens holder 31 is driven in the optical axis direction of the lens body to perform automatic focus adjustment, and the lens holder 31 is driven in a direction crossing the optical axis to perform camera shake correction.
  • the lens holder 31 is a lens holding member.
  • the Z1 direction is above the lens driving device 1, and the Z2 direction is below the lens driving device 1.
  • the Z1 direction is the front where the object to be photographed by the image sensor is present, and the Z2 direction is the rear where the image sensor is present.
  • FIG. 1 shows the entire structure of the lens driving device 1
  • FIG. 2 shows the lens driving device 1 with the cover 2 removed
  • FIG. 3 shows the lens driving device 1 disassembled for each main part. It is shown.
  • the center line O of the lens driving device 1 is shown.
  • the center line O coincides with the optical axis of the lens body (lens).
  • the Z1-Z2 direction is a direction along the optical axis.
  • the lens driving device 1 has a base structure 10.
  • the base structure portion 10 is provided with a base member 11 made of synthetic resin. Details of the base member 11 are shown in FIGS. Embedded in the base member 11 are first metal pieces 12, 13 and second metal pieces 14A, 14B and third metal pieces 19a, 19b formed of a conductive metal plate such as a phosphor bronze plate. As shown in FIG. 5, the first metal pieces 12 and 13 are divided into a plurality of pieces, and the second metal pieces 14A and 14B are divided into two pieces. Third metal pieces 19a and 19b are also provided at two locations.
  • the first metal pieces 12, 13 and the second metal pieces 14A, 14B and the third metal pieces 19a, 19b are cut out from one metal plate, and these metal pieces 12, 13, 14A, 14B, 19a and 19b are integrated with the base member 11 by a so-called insert molding method. Details of the structures of the first metal pieces 12, 13 and the second metal pieces 14A, 14B and the third metal pieces 19a, 19b will be described later.
  • the second metal pieces 14A and 14B are formed with flat portions 14a parallel to the XY plane orthogonal to the optical axis, and suspensions are provided at a total of four positions of the end portions of the flat portions 14a.
  • a fixing portion 14b is formed.
  • the suspension fixing portion 14 b is exposed from the four corners of the rectangular base member 11.
  • the lens driving device 1 is provided with four suspension wires 8 as elastic support members.
  • the base end portion (lower end portion) of each suspension wire 8 is fixed to the suspension fixing portion 14b by soldering.
  • the movable unit (movable portion) 30 is supported by the upper end portion 8a of the suspension wire 8 so as to be movable in a direction (perpendicular direction) intersecting the Z axis along the optical axis.
  • the suspension wire 8 is made of a metal material having conductivity and excellent elasticity, and is made of, for example, a copper alloy.
  • the suspension wire 8 has a circular cross section and extends linearly along the optical axis.
  • the movable unit (movable part) 30 has a movable base 32.
  • the movable base 32 is made of a synthetic resin material.
  • the movable base 32 has a rectangular shape (substantially square shape) in plan view, and magnets 33x and 33x are fixed to the side portions facing the X direction, and the magnets are fixed to the side portions facing the Y direction. 33y and 33y are fixed. The magnets 33x and 33x are arranged in parallel to each other, and the magnets 33y and 33y are arranged in parallel to each other.
  • the inner surfaces of the magnets 33x, 33x, 33y, and 33y that face the center line O are magnetized to the same magnetic pole.
  • Each of the magnets 33x, 33x, 33y, 33y has an outer surface magnetized by the same magnetic pole, and each inner surface and each outer surface are opposite magnetic poles.
  • the inner surface is an N pole and the outer surface portion is an S pole.
  • the lens holder 31 is arranged inside a frame-shaped movable base 32.
  • the lens holder 31 is made of synthetic resin, and has a circular holding hole 31a penetrating in the vertical direction (Z direction) at the center, and is formed in a cylindrical shape.
  • the imaging lens is held by a lens barrel, and a lens barrel (lens body) holding the lens can be mounted in the holding hole 31a. Therefore, the holding hole 31a of the lens holder 31 is provided with a screw groove (not shown) for attaching the lens body.
  • the lens body 31 may be held by adhesion. In the embodiment, the lens and the lens barrel are not shown.
  • the center axis of the lens holder 31 coincides with the optical axis of the lens (lens body) held by the lens holder 31 and coincides with the center line O.
  • the first leaf springs 34 ⁇ / b> A and 34 ⁇ / b> B divided into two pieces are fixed on the upper side of the movable base 32.
  • the first leaf springs 34A, 34B are formed of a conductive spring metal plate such as a copper alloy or phosphor bronze plate.
  • Each of the first leaf springs 34A and 34B is integrally formed with an outer fixing portion 34a and an inner fixing portion 34b, and a spring deforming portion 34c that connects the outer fixing portion 34a and the inner fixing portion 34b.
  • the outer fixed portions 34a of the first leaf springs 34A and 34B are fixed to the upper surface of the movable base 32 by means such as heat caulking or bonding.
  • a holding member 35 made of synthetic resin is provided on the first leaf springs 34A and 34B.
  • the pressing member 35 has a quadrangular (rectangular) frame shape, and is fixed to the upper surface of the movable base 32 together with the first leaf springs 34A and 34B by means such as heat caulking or bonding. That is, the outer fixing portions 34 a of the first leaf springs 34 ⁇ / b> A and 34 ⁇ / b> B are sandwiched and fixed between the upper surface of the movable base 32 and the pressing member 35.
  • the inner fixing portions 34b of the first leaf springs 34A and 34B are fixed to the upper surface of the lens holder 31 by means such as heat caulking or adhesion.
  • fixing protrusions that are inserted into mounting holes formed in the outer fixing portions 34a of the first plate springs 34A and 34B and mounting holes formed in the pressing member 35. Yes. Further, on the upper surface of the lens holder 31, there are provided fixing protrusions that are inserted into mounting holes formed in the inner fixing portions 34b of the first leaf springs 34A and 34B.
  • a second leaf spring 36 is provided below the movable base 32.
  • the second leaf spring 36 is formed of a metal plate having spring properties.
  • the second leaf spring 36 is integrally formed with an outer fixed portion 36a and an inner fixed portion 36b, and a spring deformation portion 36c that connects the outer fixed portion 36a and the inner fixed portion 36b.
  • the outer fixed portion 36a of the second leaf spring 36 is bonded to the lower end surface of the leg portion 32a formed by projecting downward (toward the Z2 direction) from the four corners of the movable base 32, heat caulking, or the like. It is fixed with.
  • the inner fixing portion 36b of the second leaf spring 36 is fixed to the lower surface of the lens holder 31 with an adhesive or the like.
  • the lens holder 31 is disposed inside the movable base 32, and the first leaf springs 34 ⁇ / b> A and 34 ⁇ / b> B are fixed to the upper surface of the movable base 32 and the upper surface of the lens holder 31, and the first plate springs 34 ⁇ / b> A and 34 ⁇ / b> B are fixed to the lower portion of the movable base 32 and the lower surface of the lens holder 31.
  • Two leaf springs 36 are fixed. Therefore, the lens holder 31 is supported by the first plate springs 34A and 34B and the second plate spring 36 so as to be movable in the Z1-Z2 direction, that is, in the optical axis direction, inside the movable base 32.
  • a first coil 41 is provided on the outer periphery of the lens holder 31.
  • the first coil 41 is configured such that the coated conductor is wound around the outer periphery of the lens holder 31 with the center line O as a winding center.
  • the first coil 41 is opposed to the inner surfaces of the magnets 33x, 33x, 33y, 33y with a gap.
  • the first coil 41 and the magnets 33x, 33x, 33y, 33y constitute a first drive mechanism that moves the lens holder 31 in the Z1-Z2 direction that is the optical axis direction.
  • a pair of protrusions 31 b and 31 c are integrally formed on the upper portion of the lens holder 31, and one terminal portion 42 a of the covered conductor constituting the first coil 41 is wound around the protrusion 31 b.
  • the other terminal portion 42b is wound around the protrusion 31c.
  • the covering of the covered conductor is removed, and one terminal portion 42a is soldered to the first leaf spring 34A and is conductive, and the other terminal portion 42b is connected to the first plate.
  • the spring 34B is soldered to be conductive.
  • fixing holes 34d are formed at the corners of the first leaf springs 34A and 34B. As shown in FIG. 2, the upper end portion 8a of the suspension wire 8 is inserted into the fixing hole 34d and fixed to the first leaf springs 34A and 34B by soldering.
  • the upper end portions 8a of the two suspension wires 8 fixed to the suspension fixing portion 14b of one second metal piece 14A shown in FIG. 5 are the first leaf springs fixed to the upper surface of the movable base 32.
  • the first leaf spring 34 ⁇ / b> A is electrically connected to one terminal portion 42 a of the first coil 41.
  • the upper ends 8a of the two suspension wires 8 fixed to the suspension fixing portion 14b of the other second metal piece 14B shown in FIG. 5 (see FIG. 4) are the first leaf springs fixed to the upper surface of the movable base 32.
  • the first leaf spring 34 ⁇ / b> B is electrically connected to the other terminal portion 42 b of the first coil 41.
  • the external terminal portion 14c is bent downward at the end of the second metal piece 14A, and the external terminal portion 14c is bent downward at the end of the second metal piece 14B.
  • the terminal portions 14c and 14c protrude downward from the base member 11.
  • the first coil 41 can be energized via the pair of external terminal portions 14c and 14c, the second metal pieces 14A and 14B, and the suspension wire 8 and further through the first leaf springs 34A and 34B.
  • support ridges 11 a are formed at a plurality of locations on the upper surface of the base member 11, and the insulating substrates 50 ⁇ / b> A and 50 ⁇ / b> B divided into two are supported bulges. It is installed on the part 11a, and the base member 11 and the insulating substrates 50A and 50B are fixed with an adhesive.
  • Each of the insulating substrates 50A and 50B is a laminated substrate in which a plurality of insulating sheets are laminated.
  • a coil conductor having a spiral pattern is formed of copper foil or the like.
  • a plurality of insulating sheets having coil conductors are laminated, and the upper and lower coil conductors are made conductive to form second coils 51x, 51x, 51y, 51y in which the coil conductors are connected in a spiral shape.
  • the second coils 51x, 51x, 51y, 51y are plane winding coils that circulate along the XY plane.
  • the second coils 51x and 51x are arranged in parallel to each other with an interval in the X direction, and the second coils 51y and 51y are arranged in parallel to each other with an interval in the Y direction.
  • the second coils 51 x and 51 x face the lower end surfaces of the magnets 33 x and 33 x fixed to the movable base 32 with a space therebetween, and the second coils 51 y and 51 y are fixed to the movable base 32.
  • the magnets 33y and 33y are opposed to the lower end surfaces with a space therebetween.
  • the second drive mechanism for moving the movable unit 30 including the lens holder 31 in the X direction and the Y direction is configured by the second coils 51x, 51x, 51y, 51y and the magnets 33x, 33x, 33y, 33y. Yes.
  • This second drive mechanism is a drive mechanism that moves the lens holder 31 in the direction intersecting the optical axis with respect to the base member 11.
  • the movable unit 30 that is a movable part includes a first coil 41, a lens holder 31, a movable base 32, magnets 33x, 33x, 33y, 33y, first plate springs 34A, 34B, a second plate spring 36, and a pressing member. 35.
  • the base structure 10 is provided with magnetic detection elements 45x and 45y.
  • the magnetic detection elements 45x and 45y are equipped with Hall elements and circuit components associated therewith.
  • the magnetic detection element 45x is fixed to the lower surface of the insulating substrate 50B by soldering, and the magnetic detection element 45y is fixed to the lower surface of the insulating substrate 50A by soldering.
  • the magnetic sensing element 45x faces the magnet 33x via the insulating substrate 50B, and the magnetic sensing element 45y faces the magnet 33y via the insulating substrate 50A.
  • connection conductive portions 21a, 21b, 21c, 21d, 21e, and 21f are formed on one insulating substrate 50A, and a total of six connection conductive portions 21a, 21b, 21c, 21d, 21e, and 21f are formed on the other insulating substrate 50B.
  • Connection conductive portions 22a, 22b, 22c, 22d, 22e, and 22f are formed.
  • One insulating substrate 50A has relay conductive portions 23a and 24a formed in a portion facing the other insulating substrate 50B.
  • a relay conductive portion is formed in a portion facing the one insulating substrate 50A.
  • 23b and 24b are formed.
  • the relay conductive portion 23a and the relay conductive portion 23b are electrically connected via a relay conductive pattern 28a formed on the surface of the base member 11, and the relay conductive portion 24a and the relay conductive portion 24b are connected via the relay conductive pattern 28b. Conducted.
  • connection conductive portions 21a, 21b, 21c, 21d, 21e, 21f and the connection conductive portions 22a, 22b, 22c, 22d, 22e, 22f formed in a total of 12 locations on the insulating substrates 50A, 50B
  • connection conductive portions are connected to second coils 51x and 51x facing in the X direction via wiring patterns (not shown) formed on the insulating substrates 50A and 50B. Since the second coils 51x and 51x are provided on separate insulating substrates 50A and 50B, a series connection wiring pattern (not shown) formed on the insulating substrates 50A and 50B connects the relay conductive portions 23a and 23b. The two second coils 51x and 51x are connected in series by being conducted through.
  • connection conductive portions are connected to second coils 51y and 51y facing in the Y direction via wiring patterns (not shown) formed on the insulating substrates 50A and 50B. Since the two second coils 51y and 51y are also provided on separate insulating substrates 50A and 50B, a series connection wiring pattern (not shown) formed on the insulating substrates 50A and 50B is connected to the relay conductive portion 24a, Two second coils 51y and 51y are connected in series by being conducted through 24b.
  • connection conductive portions 21a, 21b, 21c, 21d, 21e, and 21f provided on the insulating substrate 50A four connection conductive portions have wiring patterns (not shown) formed on the insulating substrate 50A.
  • the terminal portions of the magnetic sensing element 45y are soldered to the exposed portions (soldering portion, land portion), respectively.
  • connection conductive portions 22a, 22b, 22c, 22d, 22e, and 22f provided on the insulating substrate 50B four connection conductive portions have wiring patterns (not shown) formed on the insulating substrate 50B.
  • the lens driving device 1 can improve the material yield by using two insulating substrates 50A and 50B having a L-shaped planar shape in combination.
  • FIG. 4 shows the base member 11 in which the first metal pieces 12 and 13 and the second metal pieces 14A and 14B are embedded
  • FIG. 5 shows the first metal pieces 12 and 13 and the second metal pieces.
  • the pieces 14 ⁇ / b> A and 14 ⁇ / b> B are shown separated from the base member 11.
  • third metal pieces 19 a and 19 b are also embedded in the base member 11.
  • first surfaces 15 ⁇ / b> A, 15 ⁇ / b> B, 15 ⁇ / b> C, 15 ⁇ / b> D and a second surface 16 are formed on the upper portion of the base member 11 facing the Z ⁇ b> 1 side.
  • the first surfaces 15A, 15B, 15C, and 15D are formed lower than the second surface 16.
  • the first surfaces 15A, 15B, 15C, and 15D are formed at the same height position in the thickness direction (optical axis direction) of the base member 11.
  • the second surface 16 forms the same plane in the upper portion on the Z1 side of the base member 11 except for the support raised portion 11a.
  • the support raised portions 11a are portions that support the insulating substrates 50A and 50B when the insulating substrates 50A and 50B are stacked on the base member 11. Since the upper surface (surface) of the support raised portion 11a is also higher than the first surfaces 15A, 15B, 15C, and 15D, that is, on the Z1 side (magnets 33x and 33y side), it constitutes a part of the second surface. is doing.
  • An inclined surface 17A is formed at the boundary between the first surface 15A and the second surface 16.
  • a slope 17B is formed at the boundary between the first surface 15B and the second surface 16.
  • a slope 17C is formed at the boundary between the first surface 15C and the second surface 16.
  • an inclined surface 17D is formed at the boundary between the first surface 15D and the second surface 16.
  • the first surface 15C, the second surface 16, and the inclined surface 17C appear in the cross-sectional view of FIG.
  • the rising angle ⁇ of the inclined surface 17C from the first surface 15C is preferably 45 degrees or less. More preferably, it is 10 degrees or more and 40 degrees or less.
  • the magnetic sensing element 45x fixed to the lower surface of the insulating substrate 50B enters the recess in which the first surface 15C is formed and faces the first surface 15C.
  • the magnetic sensing element 45y fixed to the lower surface of the insulating substrate 50A is located in the recess where the first surface 15E is formed, and faces the first surface 15E.
  • the first surface 15E is formed at the same height as the first surfaces 15A, 15B, 15C, 15D.
  • the first metal piece 12 is provided with conductive portions 12a, 12b, 12c, 12d, 12e, and 12f separated from each other.
  • the first metal piece 13 is provided with conductive portions 13a, 13b, 13c, 13d, 13e, and 13f that are separated from each other.
  • the conducting portions 12a, 12b, 12c, 12d, 12e, and 12f and the conducting portions 13a, 13b, 13c, 13d, 13e, and 13f are flat surfaces that are parallel to the XY plane.
  • the conductive portions 12a, 12b, 12c, 12d, 12e, and 12f and the conductive portions 13a, 13b, 13c, 13d, 13e, and 13f are at the same height position in the base member 11, and these conductive portions and the second portion
  • the flat portions 14 a and 14 a of the metal pieces 14 A and 14 B are also at the same height position in the base member 11. That is, the conductive portions 12a, 12b, 12c, 12d, 12e, 12f of the first metal piece 12, the conductive portions 13a, 13b, 13c, 13d, 13e, 13f of the first metal piece 13, and the second metal pieces 14A, 14B.
  • the flat portions 14a and 14a are located on the same height surface in the optical axis direction.
  • the flat portions 14a and 14a of 14B are formed separately from the same flat plate portion of the same metal plate, and are embedded in the base member 11 by an insert molding method.
  • external terminal portions 12g, 12h, 12i, 12j, 12k, and 12m are bent downward from the conductive portions 12a, 12b, 12c, 12d, 12e, and 12f of the first metal piece 12. These external terminal portions protrude downward from the base member 11 and are exposed to the outside of the base member 11. External terminal portions 13g, 13h, 13i, 13j, 13k, 13m are bent downward from the conductive portions 13a, 13b, 13c, 13d, 13e, 13f of the first metal piece 13, and these external terminal portions are It protrudes downward from the base member 11 and is exposed to the outside of the base member 11.
  • four exposed portions 18A are provided on the first surface 15A, and the conductive portions 12a, 12b, 12c, and 12d of the first metal piece 12 that are insert-molded are exposed in the exposed portion 18A. It is exposed on the first surface 15A. In FIG. 5, three exposed portions 18A appear. Two exposed portions 18B are provided on the first surface 15B, and the conducting portions 12e and 12f are exposed at the first surface 15B at the exposed portion 18B.
  • exposed portions 18C are provided on the first surface 15C, and the conductive portions 13a, 13b, 13c, and 13d of the first metal piece 13 that are insert-molded are the first surface 15C in the exposed portion 18C. Is exposed.
  • Two exposed portions 18D are provided on the first surface 15D, and the conductive portions 13e and 13f are exposed at the first surface 15D at the exposed portion 18D.
  • conductive patterns 25a, 25b, 25c, and 25d are formed from the first surface 15A to the second surface 16 through the inclined surface 17A.
  • the conductive portion 12a exposed on the first surface 15A is connected to the conductive pattern 25a, and the conductive portion 12b is connected to the conductive pattern 25b.
  • the conductive portions 12c and 12d are connected to the conductive patterns 25c and 25d, respectively.
  • Conductive patterns 25e and 25f are formed from the first surface 15B to the second surface 16 through the inclined surface 17B.
  • the conductive portions 12e and 12f exposed on the first surface 15B are connected to the conductive patterns 25e and 25f, respectively.
  • Conductive patterns 26a, 26b, 26c, and 26d are formed from the first surface 15C to the second surface 16 through the inclined surface 17C.
  • the conductive portion 13a exposed on the first surface 15C is connected to the conductive pattern 26a, and the conductive portion 13b is connected to the conductive pattern 26b.
  • the conductive portions 13c and 13d are connected to the conductive patterns 26c and 26d, respectively.
  • Conductive patterns 26e and 26f are formed from the first surface 15D to the second surface 16 through the inclined surface 17D.
  • the conductive portions 13e and 13f exposed on the first surface 15D are connected to the conductive patterns 26e and 26f, respectively.
  • FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 4.
  • the insulating substrate 50B and the magnetic sensing element 45x that constitute the base structure 10 together with the base member 11 are shown in an undisassembled state.
  • FIG. 6 shows the conductive portion 13d and the external terminal portion 13j of the first metal piece 13, and the conductive pattern 26d.
  • the conductive pattern 26d is a conductive layer in which the surface of the printing layer is plated, and is continuously formed from the first surface 15C to the second surface 16 through the inclined surface 17C.
  • the printing method of the printing layer is an ink jet method, a coating method using a dispenser, an offset printing method, or the like. Any other method may be used for printing.
  • a copper foil layer or the like may be formed on the upper surface of the base member 11, and the conductive pattern 26d may be formed by etching.
  • the printed layer of the conductive pattern 26d is made of a silver pattern obtained by printing and baking (heating) a silver paste containing silver and a resin binder.
  • a plating layer is provided on the surface of the printing layer.
  • the plating layer is formed by forming a copper plating layer, a nickel plating layer, and a gold plating layer in this order on a printing layer made of a silver pattern, and the outermost surface (outer surface) of the conductive pattern 26d is a gold plating layer. ing.
  • the lower layer of the plating layer is a copper foil or the like.
  • the conductive pattern 26d is continuously connected from the first surface 15C to the second surface 16 through the inclined surface 17C without interruption. It becomes easy to form.
  • the formation of all the conductive patterns other than the conductive pattern 26d and the connection between the conductive pattern and the conductive portion are the same as the structure shown in FIG. That is, a part of the conductive pattern is overlapped on the upper surface of the conductive portion, and the conductive pattern and the conductive portion are electrically connected at the overlapped portion.
  • two exposed portions 18E and 18E are formed on the second surface 16 of the base member 11, and as shown in FIG. 4, third metal pieces 19a and 19b are formed on the exposed portions 18E and 18E. Is exposed.
  • the third metal pieces 19a and 19b are cut out from the same metal plate as the first metal pieces 12 and 13 and the second metal pieces 14A and 14B.
  • the relay conductive patterns 28 a and 28 b are formed on the second surface 16 of the base member 11.
  • the relay conductive pattern 28a is partially connected to the third metal piece 19a by being overlapped on the third metal piece 19a, and the relay conductive pattern 28b is partially overlapped on the third metal piece 19b. Is connected to the third metal piece 19b.
  • the relay conductive patterns 28a and 28b are formed of the same conductive material in the same process as the conductive pattern. By using the third metal pieces 19a and 19b as electrodes, the surface of the printing layer of the relay conductive patterns 28a and 28b can be plated with copper and nickel as a base.
  • the flat part 14a of 2nd metal piece 14A, 14B shown in FIG. 5 is formed in the same height position as each conduction
  • the conductive pattern 25a appearing on the second surface 16 is soldered to the connection conductive portion 21a of the insulating substrate 50A.
  • the conductive patterns 25b, 25c, 25d, 25e, and 25f are also soldered separately to the connection conductive portions 21b, 21c, 21d, 21e, and 21f.
  • the conductive pattern 26a appearing on the second surface 16 is soldered to the connection conductive portion 22a of the insulating substrate 50B.
  • the conductive patterns 26b, 26c, 26d, 26e, and 26f are also soldered individually to the connection conductive portions 22b, 22c, 22d, 22e, and 22f.
  • relay conductive portions 23a and 23b and the relay conductive pattern 28a thereunder are soldered, and the relay conductive portions 23a and 23b are made conductive. Further, the relay conductive portions 24a and 24b and the relay conductive pattern 28b thereunder are soldered so that the relay conductive portions 24a and 24b are electrically connected to each other.
  • the magnetic detection elements 45y and 45x are mounted on the lower surfaces of the insulating substrates 50A and 50B.
  • the external terminal portions 12g, 12h, 12i, 12j, 12k, and 12m formed of the first metal piece 12 and the external terminal portions 13g, 13h, 13i, 13j, and 13k formed of the first metal piece 13 are formed.
  • 13m through the conductive patterns 25a, 25b, 25c, 25d, 25e, 25f and the conductive patterns 26a, 26b, 26c, 26d, 26e, 26f, the second coils 51x, 51x, 51y, 51y and the magnetic sensing elements They are individually connected to the terminal portions 45x and 45y.
  • the first drive mechanism moves around the center line O.
  • the lens holder 31 is driven in the Z1-Z2 direction, which is the optical axis direction, by the flowing coil current and the magnetic field from the inner surface of the magnets 33x, 33x, 33y, 33y, and the automatic focus of the lens held in the lens holder 31 Adjustments are made.
  • the magnetic detection element 45x detects the movement of the magnet 33x facing the insulating substrate 50B, and the magnetic detection element 45y opposes the insulating substrate 50A.
  • the movement of the magnet 33y is detected, and the detection signal is detected from any of the external terminal portions 12g, 12h, 12i, 12j, 12k, 12m and the external terminal portions 13g, 13h, 13i, 13j, 13k, 13m.
  • a drive current that corrects the movement of the movable unit 30 in the XY direction is generated, and is applied to the second coils 51x, 51x, 51y, and 51y from one of the external terminal units through the conductive pattern.
  • the movable unit 30 is driven in the X direction by the electromagnetic force generated by the magnetic flux from the inner surface to the outer surface of the magnet 33 and the current flowing in the Y direction in the second coils 51x and 51x below the magnets 33x and 33x. Is done.
  • the movable unit 30 is driven in the Y direction by the electromagnetic force generated by the magnetic flux extending from the inner surface to the outer surface of the magnet and the current flowing in the X direction in the second coils 51y and 51y below the magnets 33y and 33y. Thereby, camera shake correction is performed.
  • the first metal pieces 12 and 13 embedded in the base member 11 and the conductive pattern formed on the surface of the base member 11 are combined to form an insulating substrate 50 ⁇ / b> A. , 50B, so that a large number of wiring paths can be configured efficiently.
  • the number of parts can be reduced.
  • it is not necessary to employ a complicated structure such as insulating the metal pieces embedded in the base member 11 by vertically overlapping them, and all the metal pieces are cut out from the flat portion of the same metal plate and inserted into the base member. 11 can be configured.
  • the first surface 15A, 15B, 15C, 15D at the lower position connects the conductive portion and the conductive pattern, and the second surface 16 at the higher position,
  • the connecting conductive portions of the insulating substrates 50A and 50B are soldered. Therefore, the conductive portion formed of the metal plate does not hit the insulating substrates 50A and 50B, and a short circuit between the wiring pattern formed on the insulating substrates 50A and 50B and the conductive portion can be prevented.
  • the base member 11 can be partially thickened, and the first metal piece, the second metal piece, and the third metal piece can be formed by insert molding. It becomes possible to embed it firmly in the base member.
  • the second coils 51x and 51y are configured by a laminated substrate in which a plurality of insulating sheets having coil conductors are stacked.
  • the second coil is not limited to this.
  • the second coil may be configured by winding a conducting wire in a predetermined shape, and the second coil may be mounted on the surface of the insulating substrate. In this case, it is assumed that the end of the second coil is connected to the wiring pattern of the insulating substrate, and the wiring pattern is electrically connected to the connection conductive portion formed on the insulating substrate.
  • the base member 11 has been described as having the supporting raised portions 11a for supporting the insulating substrates 50A and 50B.
  • the present invention is not limited to this.
  • the base member 11 may not be provided with the support ridge 11a, and the insulating substrates 50A and 50B may be placed on the second surface 16 of the base member 11 and overlapped with the base member 11.
  • Base structure part 11 Base member 12 1st metal piece 12a, 12b, 12c, 12d, 12e, 12f Conductive part 12g, 12h, 12i, 12j, 12k, 12m External terminal part 13 1st metal piece 13a, 13b, 13c , 13d, 13e, 13f Conductive portions 13g, 13h, 13i, 13j, 13k, 13m External terminal portions 14A, 14B Second metal piece 14a Flat portion 14b Suspension fixing portion 14c External terminal portions 15A, 15B, 15C, 15D First surface 16 2nd surface 17A, 17B, 17C, 17D Slope 19a, 19b 3rd metal piece 21a, 21b, 21c, 21d, 21e, 21f Connection conductive part 22a, 22b, 22c, 22d, 22e, 22f Connection conductive part 23a, 23b , 24a, 24b Relay conductive portions 25a, 25

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)

Abstract

L'invention concerne une première pièce métallique, une deuxième pièce métallique et une troisième pièce métallique, qui sont enfouies dans un élément de base par un procédé de moulage par insertion. Une pluralité de motifs conducteurs formés s'étendent de la première surface à la seconde surface de l'élément de base, chacun des motifs conducteurs ayant une continuité électrique jusqu'à un élément de continuité électrique de la première pièce métallique.
PCT/JP2017/045956 2016-12-28 2017-12-21 Appareil d'entraînement de lentille Ceased WO2018123815A1 (fr)

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CN201780080946.5A CN110140083B (zh) 2016-12-28 2017-12-21 透镜驱动装置
JP2018559126A JP6678252B2 (ja) 2016-12-28 2017-12-21 レンズ駆動装置

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JP2016254991 2016-12-28
JP2016-254991 2016-12-28

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CN112639605A (zh) * 2018-09-05 2021-04-09 Lg伊诺特有限公司 透镜驱动装置与相机装置
JP2022104805A (ja) * 2020-12-29 2022-07-11 新思考電機有限公司 レンズ駆動装置、カメラ装置、及び電子機器
WO2022263811A1 (fr) * 2021-06-14 2022-12-22 Cambridge Mechatronics Limited Ensemble actionneur de moteur à bobine acoustique

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JPWO2018123815A1 (ja) 2019-07-11
JP6678252B2 (ja) 2020-04-08
CN110140083A (zh) 2019-08-16
CN110140083B (zh) 2021-06-15

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