WO2016175210A1 - Lens drive device - Google Patents

Lens drive device Download PDF

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Publication number
WO2016175210A1
WO2016175210A1 PCT/JP2016/063079 JP2016063079W WO2016175210A1 WO 2016175210 A1 WO2016175210 A1 WO 2016175210A1 JP 2016063079 W JP2016063079 W JP 2016063079W WO 2016175210 A1 WO2016175210 A1 WO 2016175210A1
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WO
WIPO (PCT)
Prior art keywords
lens
holding member
leaf spring
coil
driving device
Prior art date
Application number
PCT/JP2016/063079
Other languages
French (fr)
Japanese (ja)
Inventor
寛志 長田
Original Assignee
アルプス電気株式会社
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 アルプス電気株式会社 filed Critical アルプス電気株式会社
Priority to JP2017515557A priority Critical patent/JP6529581B2/en
Priority to CN201680024811.2A priority patent/CN107533209B/en
Publication of WO2016175210A1 publication Critical patent/WO2016175210A1/en

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • the present invention relates to a lens driving device mounted on a mobile device with a camera, for example.
  • the lens driving device which is a main part of the camera mechanism mounted on the small portable device, has been increasingly demanded to drive the lens body (lens barrel) with high accuracy.
  • a lens driving device that should satisfy these two requirements, a device in which a magnetic circuit for driving a lens holder (lens holding member) for holding a lens body is provided on four sides of the lens holder is well known.
  • Patent Document 1 proposes a lens driving device 901 as shown in FIG.
  • FIG. 16 is a diagram for explaining a conventional lens driving device 901.
  • FIG. 16 (a) is an exploded perspective view of the lens driving device 901 viewed from below
  • FIG. 16 (b) is a coil. It is process drawing explaining the electrical connection method of the edge part (coil edge part 934 of the 1st coil 931) and a leaf
  • a lens driving device 901 shown in FIG. 16A includes a moving body 903 (lens holder 937 and sleeve 913) that holds a lens and can move in the optical axis direction, and a magnetic driving mechanism that drives the moving body 903 in the optical axis direction.
  • 905 first coil 931, second coil 932, four magnets 917 and yoke 918
  • a support 902 spring support member 911, yoke 918 and holder 919 on which a magnetic drive mechanism 905 and a moving body 903 are mounted.
  • an image-side spring member 914x and a subject-side spring member 914y that connect the support body 902 and the moving body 903.
  • the lens driving device 901 causes a predetermined current to flow through the coil (first coil 931 and second coil 932) via the image-side spring member 914x, and along the optical axis direction by electromagnetic force generated by the magnetic driving mechanism 905.
  • the moving body 903 is moved.
  • a coil end (coil end 934 of the first coil 931 in FIG. 16B) and a leaf spring (image) are connected by a connection method as shown in FIG.
  • the side spring member 914x) is electrically connected.
  • the pin 915 is held in a direction such as press-fitting by tying the sleeve 913.
  • the coil end 934 at the start of winding of the first coil 931 is wound around the pin 915 and wound, for example, about 7 to 9 turns (9 turns in FIG. 16B).
  • the tip of the binding pin 915 is irradiated with a laser to remove the insulating coating layer from the surface of the coil end 934, and the tip of the binding pin 915 is melted and deformed. As a result, a conductive bulge portion 951 is formed at the tip of the binding pin 915.
  • the image-side spring member 914x is attached to the end of the sleeve 913.
  • the coil end portion 934 (bulging portion 951) of the first coil 931 and the image side spring member 914x are connected by the conductive adhesive 955 or the like. In this way, the end of the coil and the leaf spring are electrically connected.
  • the conductive adhesive 955 and the like are formed on the side surface side of the binding pin 915 around which the coil end portion 934 (coil end portion) is wound and the surface of the image side spring member 914x (leaf spring). Between the members arranged in an L shape. Then, in order to ensure electrical connection between the coil end and the leaf spring, the height of the binding pin 915 is increased so that the coil end 934 is wound longer (from 7 turns to 9). About the turn). For this reason, the height dimension of the lens holding member (lens holder 937) in the optical axis direction is increased, and as a result, there is a problem that the height dimension of the lens driving device cannot be reduced.
  • This invention solves the subject mentioned above, and aims at providing the lens drive device which can make the height dimension in an optical axis direction small.
  • the lens driving device of the present invention includes a cylindrical lens holding member capable of holding a lens body, an inner portion and an outer portion, and the inner portion is fixed to the lens holding member.
  • a driving mechanism comprising: a driving mechanism, wherein the inner portion of the leaf spring is fixed to one end in the optical axis direction of the lens holding member, and the coil is A winding part formed by winding a conductive wire around the outer periphery between the one end part and the other end part in the optical axis direction of the lens holding member; and an extension part connected to the end part of the winding part;
  • the lens driving device of the present invention it is not necessary to wind the end portion of the coil for a longer time to provide a binding portion for ensuring electrical connection, or to increase the protruding height of the binding portion. There is no need. As a result, the height dimension of the lens holding member in the optical axis direction can be reduced, and as a result, the height dimension of the lens driving device in the optical axis direction can be reduced.
  • the extending portion has a connecting portion extending between the facing portion and the inner portion of the leaf spring, and the connecting portion is embedded in the conductive adhesive. It is characterized by being.
  • the connecting portion since the connecting portion is embedded in the conductive adhesive between the facing portion and the inner portion, the connecting portion reliably connects the extending portion of the coil and the inner portion of the leaf spring. Can be made.
  • the extension part of the coil and the inner part of the leaf spring are conductively connected between the facing part and the inner part, even when the holding part is a protruding binding part in which the extension part is entangled It is not necessary to increase the protruding dimension. For this reason, the height dimension of the lens holding member in the optical axis direction can be reduced, and consequently the height dimension of the lens driving device in the optical axis direction can be reduced.
  • the facing portion is provided with a housing portion formed by a jetty portion protruding toward the inner portion side, and the conductive portion is embedded in the housing portion. It is characterized by being filled with an adhesive.
  • the connection part extended between the opposing part and the inner side part is arrange
  • plate spring can be more conductively connected.
  • the jetty part has a wall part provided around the housing part, and the holding part is provided on one side of the jetty part, and the holding part An opening portion in which the wall portion is cut out is formed on the other side of the jetty portion spaced apart from the wall, and the extension portion is inserted through the opening portion.
  • the extension part of the coil can be inserted into the open part, and even if the housing part surrounded by the jetty part is provided, it is possible to avoid the interference between the jetty part and the extension part. . For this reason, the space
  • a through portion that prevents the conductive adhesive from moving in a direction away from the holding portion is provided in the inner portion at a position facing the opening portion. It is characterized by that.
  • the holding portion includes a protruding portion that protrudes in the same direction as the jetty portion from the one end portion of the lens holding member at a position adjacent to the housing portion, and extends A part has a winding part wound around the protrusion part, and the conductive adhesive is provided between the winding part and the inner part.
  • the extending part of the coil can be wound around the protruding part (holding part), and the winding part of the extending part can be easily held.
  • a conductive adhesive is provided between the coil winding portion and the inner portion of the leaf spring, and the conductive connection can be established at this winding portion in addition to the connection portion.
  • the inner portion has one surface that faces the housing portion and another surface that is a surface opposite to the one surface, and the protruding portion has a tip at the other surface side. Projecting from the inner portion so as to be located at the end portion, and the winding portion is provided so as to be opposed to the end surface of the inner portion facing the accommodating portion with a gap, A cutout portion in which the winding portion side is opened is formed in the inner portion that is positioned, and the conductive adhesive is exposed from the cutout portion.
  • the conductive adhesive comes into contact with the end face of the notch, and the leaf spring is reliably adhered. Further, when the accommodating portion is filled with the conductive adhesive and then the leaf spring is attached to the lens holding member, even if the filling amount of the conductive adhesive varies, the variation in the amount can be absorbed. That is, when there is much conductive adhesive, the conductive adhesive can flow out from the notch to the other side of the inner part of the leaf spring. Furthermore, it can be confirmed whether the conductive adhesive is appropriately provided through the notch.
  • the lens driving device of the present invention it is not necessary to wind the end of the coil for a longer time and to provide a binding portion for ensuring electrical connection or to increase the protruding height of the binding portion.
  • the height dimension of the lens holding member in the optical axis direction can be reduced, and as a result, the height dimension of the lens driving device in the optical axis direction can be reduced.
  • FIG. 2A and 2B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 2A is an upper perspective view, and FIG. 2B is a view from the Y2 side shown in FIG.
  • FIG. 3A and 3B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 3A is a top view seen from the Z1 side shown in FIG. 2, and FIG. It is the bottom view seen from the Z2 side shown.
  • 4A and 4B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 4A is an upper perspective view in which the yoke shown in FIG.
  • FIG. 2A is omitted
  • FIG. It is the front view which abbreviate
  • 5A and 5B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 5A is an upper perspective view of a lens holding member, and FIG. 5B is a lens in FIG. It is an upper perspective view which shows the state by which the coil was wound by the holding member.
  • 6A and 6B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 6A is a lower perspective view of a lens holding member, and FIG. 6B is a lens in FIG. It is a downward perspective view which shows the state by which the coil was wound by the holding member.
  • FIG. 7 (a) is a side view of the lens holding member seen from the X2 side shown in Drawing 5 (a).
  • FIG. 7B is an enlarged side view of an R portion shown in FIG. 7A
  • FIG. 7C is a lower perspective view of FIG. 7B viewed from the lower side.
  • FIG. 8A is a diagram illustrating the lens driving device according to the first embodiment of the present invention
  • FIG. 8A is a lower perspective view of the lens holding member shown in FIG.
  • FIG. 9B is a lower perspective view illustrating a state where a coil is wound around the lens holding member illustrated in FIG.
  • FIG. 8A is a diagram illustrating the lens driving device according to the first embodiment of the present invention
  • FIG. 8A is a lower perspective view of the lens holding member shown in FIG.
  • FIG. 9B is a lower perspective view illustrating a state where a coil is wound around the lens holding member illustrated in FIG.
  • FIG. 9B is a lower perspective view illustrating a state where a coil is
  • FIG. 9A is a diagram illustrating a lens holding member according to the lens driving device of the first embodiment of the present invention
  • FIG. 9A is an enlarged lower perspective view of a Q portion shown in FIG. (B) is the expansion downward perspective view of P section shown in Drawing 6 (b).
  • FIGS. 10A and 10B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 10A is a bottom view in which a terminal and a base member are omitted, and FIG. Further, the bottom plate spring and the lens holding member are omitted from the bottom view.
  • FIG.11 (a) is a top view of an upper leaf
  • FIG.11 (b) is a lower leaf
  • Fig.12 (a) is an enlarged bottom view of the S section shown to Fig.10 (a).
  • FIG. 12B is an enlarged side view of the leaf spring, the coil, and the lens holding member when the portion S shown in FIG. 10A is viewed from the X2 side.
  • FIGS.11 (a) is a top view of an upper leaf
  • FIG.11 (b) is a lower leaf
  • Fig.12 (a) is an enlarged bottom view of the S section shown to Fig.10 (a).
  • FIG. 12B is an enlarged side view of the leaf spring, the coil, and the lens holding member when the portion S shown in FIG. 10A is viewed from the X2 side.
  • FIG. 13A and 13B are diagrams illustrating a fixed-side member of the lens driving device according to the first embodiment of the present invention.
  • FIG. 13A is an upper perspective view of the base member, and FIG. It is an upper perspective view which assembled
  • FIG. 14A is a diagram for explaining a modification of the lens driving device according to the first embodiment of the present invention
  • FIG. 14A is a schematic diagram of Modification 1 and Modification 2
  • FIG. 14C is a schematic diagram of Modification 3 and Modification 4.
  • FIG. 14C is a schematic diagram of Modification 5 and Modification 6.
  • FIG. 14A is a diagram for explaining a modification of the lens driving device according to the first embodiment of the present invention
  • FIG. 14A is a schematic diagram of Modification 1 and Modification 2
  • FIG. 14C is a schematic diagram of Modification 3 and Modification 4.
  • FIG. 14C is a schematic diagram of Modification 5 and Modification 6.
  • FIG. 16A is an exploded perspective view of the lens driving device as viewed from the lower side
  • FIG. 16B is an end portion of the coil (first portion). It is process drawing explaining the electrical connection method of a coil end part of a coil and a leaf
  • FIG. 1 is an exploded perspective view illustrating the lens driving device 101 according to the first embodiment of the present invention.
  • 2A is an upper perspective view of the lens driving device 101
  • FIG. 2B is a front view of the lens driving device 101 viewed from the Y2 side shown in FIG. 2A.
  • 3A is a top view of the lens driving device 101 viewed from the Z1 side shown in FIG. 2
  • FIG. 3B is a bottom view of the lens driving device 101 viewed from the Z2 side shown in FIG. is there.
  • 4A is an upper perspective view in which the yoke 4 shown in FIG. 2A is omitted
  • FIG. 4B is a front view in which the yoke 4 shown in FIG. 2B is omitted.
  • the lens driving device 101 has a rectangular parallelepiped shape as shown in FIGS. 2 and 3, and can hold a lens body (not shown) as shown in FIGS.
  • the lens holding member 2, the drive mechanism MK that moves the lens holding member 2 up and down along the optical axis direction JD (Z direction shown in FIG. 2), and the lens holding member 2 are supported so as to be movable in the optical axis direction JD.
  • a plate spring 6 and a fixed side member RG to which the plate spring 6 is fixed are configured.
  • the lens driving device 101 according to the first embodiment of the present invention has a terminal 7 for electrical connection with the outside.
  • the driving mechanism MK also serves as an octagonal annular coil 3 and a rectangular box-like outer case.
  • the yoke 4 and four magnets 5 disposed to face the four sides of the coil 3 are provided.
  • the leaf spring 6 is disposed between the upper leaf spring 16 disposed between the lens holding member 2 and the yoke 4, and between the lens retaining member 2 and the base member 18.
  • the fixed member RG is mainly composed of a base member 18 in which the terminals 7 shown in FIG. 1 are embedded.
  • the lens driving device 101 is mounted on a substrate on which an imaging element (not shown) is mounted, with a lens body (not shown) holding a lens fixed to the lens holding member 2. Then, the lens driving device 101 is energized to the coil 3 from the power supply from the substrate, and the lens holding member 2 disposed above the image pickup device is moved in the optical axis direction JD of the lens by the electromagnetic force generated by the driving mechanism MK (FIG. (Z direction shown in FIG. 2). In other words, the lens driving device 101 moves the lens of the lens body in the direction away from the imaging element to enable macro shooting, and moves the lens of the lens body in the direction of approaching to enable shooting at infinity. .
  • the optical axis direction JD is along the central axis direction of the cylindrical lens body (lens barrel).
  • FIG. 5A is an upper perspective view of the lens holding member 2
  • FIG. 5B is an upper perspective view showing a state in which the coil 3 is wound around the lens holding member 2 of FIG. 5A.
  • . 6A is a lower perspective view of the lens holding member 2
  • FIG. 6B is a lower perspective view showing a state where the coil 3 is wound around the lens holding member 2 of FIG. 6A.
  • . 7A is a side view of the lens holding member 2 viewed from the X2 side shown in FIG. 5A
  • FIG. 7B is an enlarged side view of the R portion shown in FIG. 7A.
  • FIG. 7C is a lower perspective view of FIG. 7B viewed from the lower side.
  • FIG. 8A is a lower perspective view of the lens holding member 2 shown in FIG. 6A as viewed from the X2 side, and FIG. 8B shows a coil formed on the lens holding member 2 shown in FIG. It is a downward perspective view which shows the state in which 3 was wound.
  • FIG. 9A is an enlarged lower perspective view of the Q portion shown in FIG. 8B
  • FIG. 9B is an enlarged lower perspective view of the P portion shown in FIG. 6B.
  • FIG. 10A is a bottom view in which the terminal 7 (including a connecting member 57 described later) and the base member 18 are omitted
  • FIG. 10B is a lower leaf spring 26 ⁇ / b> A in FIG. It is the bottom view which omitted side leaf spring 26B and lens holding member 2.
  • the lens holding member 2 of the lens driving device 101 is manufactured by injection molding using a synthetic resin such as a liquid crystal polymer (LCP, Liquid Crystal), and is formed in a cylindrical shape as shown in FIGS. And a cylindrical portion 12 having an inner peripheral surface and an outer peripheral surface, and a flange-shaped portion 52 formed on the lower side (the Z2 direction side shown in FIG. 7A) which is one end side in the optical axis direction JD. It is mainly composed.
  • a synthetic resin such as a liquid crystal polymer (LCP, Liquid Crystal)
  • the cylindrical portion 12 of the lens holding member 2 is provided with a thread groove on the inner peripheral surface, and a lens body (not shown) is engaged and attached. Further, the cylindrical portion 12 is provided with two pedestal portions 12d having two concave depressions on the other end side (the upper end side which is the Z1 direction side shown in FIG. 5) located at the upper portion thereof. (Two locations in the X direction shown in FIG. 5). As shown in FIG. 4A, an inner portion of the upper leaf spring 16 (specifically, a first portion 16a described later) is placed on the pedestal portion 12d.
  • FIG. 5 shows four coil support portions 12j for supporting the coil 3 from the inside.
  • four hook portions 12h are formed so as to face the hook-like portion 52 and protrude radially outward.
  • the coil 3 is supported by the coil support part 12j, and is pinched
  • the lens holding member 2 is wound in an octagonal shape on the outer peripheral surface side.
  • the hook-like portion 52 of the lens holding member 2 protrudes radially outward from the outer periphery (outer peripheral surface) on one end side (the lower end side that is the Z2 direction side shown in FIG. 6) located at the lower portion of the cylindrical portion 12. Is formed.
  • the coil 3 is disposed on one surface side (upper surface side) of the bowl-shaped portion 52.
  • the hook-shaped portion 52 passes through one surface side (Z1 direction side shown in FIG. 5) and the other surface side (Z2 direction side shown in FIG. 5).
  • Two notched portions 52k are formed to face each other.
  • the notch 52k includes portions on the winding start side and the winding end side of the coil 3 (specifically, insertion portions of an extension portion 33 described later). 33k) is inserted.
  • the hook-shaped part 52 is provided with the elastic deformation part 62 formed so that a part of notch part 52k may be plugged up, and in 1st Embodiment of this invention, it is. , Formed integrally with the bowl-shaped portion 52.
  • the elastic deformation portion 62 has a thin wall portion 62 q formed thinner than the hook-shaped portion 52 and a wall thickness dimension toward the hook-shaped portion 52.
  • the connecting portion 62r is formed to be thick, and the connecting portion 62r is provided so as to be positioned on two sides that are adjacent and intersect each other, and is connected to the two sides of the thin-walled portion 62q. It is connected to. Thereby, the thin part 62q formed thinly can be supported reliably.
  • Part (projection part) 72 On the other surface side (lower surface side) of the hook-shaped portion 52, as shown in FIGS. 6 and 8, two rectangular convex holdings projecting from the other surface (lower surface) in the optical axis direction JD (downward).
  • Part (projection part) 72 six projecting parts 2t having a round convex shape, and a jetty part 82 formed by three side wall parts (inner side wall part 82u, outer side wall part 82v, side wall part 82w), Is provided.
  • two holding portions 72 are provided corresponding to the start and end of winding of the coil 3, and the holding portion 72 includes the coil 3 ( Part of both ends of the extending portion 33) is held by being entangled (see FIG. 9).
  • the holding portion 72 that holds a part of the coil 3 on the winding start side of the coil 3 is a holding portion 72A, and the winding end of the coil 3 is completed.
  • the holding unit 72 holding a part of the coil 3 on the side will be described as a holding unit 72B.
  • the protruding portion 2t includes a lower leaf spring.
  • the inner portions of 26A and the lower leaf spring 26B (specifically, a third portion 26c described later) are mounted and fixed.
  • the inner portions of the lower leaf spring 26A and the lower leaf spring 26B are fixed by heat caulking the protruding portion 2t. Therefore, in FIGS. 6 to 9 and 10A, the protruding portion 2t is fixed. Is shown in a state where the tip after heat caulking is deformed.
  • the jetty portion 82 is provided in a facing portion that faces the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B) while being spaced apart from each other in the optical axis direction JD (see FIG. 12 described later).
  • the inner wall 82u located on the center side of the lens holding member 2, the outer wall 82v located on the outer side facing the inner wall 82u, and the holding portion 72 on one side. It is comprised from the side wall part 82w located between the inner wall part 82u and the outer side wall part 82v.
  • the other side of the jetty 82 that is separated from the holding portion 72 is an open portion 82z in which a wall portion is cut out.
  • a space surrounded by the three wall portions serves as the accommodating portion 82s.
  • the side wall of the holding portion 72 is preferably used as the side wall portion 82 w of the jetty portion 82. Therefore, the accommodating portion 82s formed by the jetty portion 82 is provided adjacent to the holding portion 72 at a position adjacent thereto.
  • the drive mechanism MK includes an coil 3 wound in an annular shape having an octagonal angle, a rectangular box-shaped yoke 4 also serving as an outer case, And four magnets 5 arranged to face the four sides.
  • the driving mechanism MK generates a driving force (thrust) by the current flowing through the coil 3 and the magnetic field generated from the magnet 5, and moves the lens holding member 2 up and down along the optical axis direction JD.
  • the coil 3 of the drive mechanism MK will be described.
  • the coil 3 is formed between one end (lower end) and the other end (upper end) in the optical axis direction JD (Z direction shown in FIG. 2) of the lens holding member 2.
  • a conductive wire is wound around the outer periphery, and as shown in FIG. 1, a wound portion 13 formed by being wound with an octagonal angle and ends on both sides of the wound portion 13. And an extending portion 33 connected to the portion.
  • the surface of the conductive wire may be covered with an insulating member, and the detailed winding of the conductive wire in the winding portion 13 is possible. The state is omitted.
  • the portion 33 is defined as an extending portion 33A
  • the extending portion 33 connected to the end of the winding portion 13 located on the outer peripheral side of the winding portion 13 on the winding end side of the coil 3 is defined as an extending portion 33B.
  • the extending portion 33 (33A, 33B) of the coil 3 includes a winding portion 33m wound around a holding portion (protruding portion) 72 (72A, 72B), and an inner bottom surface ( A connecting portion 33c extending opposite to the opposing portion), and an insertion portion 33k that is inserted through the notch 52k and extends to one surface side and the other surface side of the bowl-shaped portion 52. It is configured.
  • the extending portion 33 ⁇ / b> A of the coil 3 is entangled with the holding portion 72 ⁇ / b> A of the lens holding member 2.
  • a part of the wire of the coil 3 is wound around the holding portion 72A for 3 turns.
  • the winding part 33m is formed in the holding part 72A, and a part of the extending part 33A is held by the holding part 72A.
  • the wire is drawn out from the winding portion 33m around which the wire is wound, and the wire is wound around the outer periphery of the lens holding member 2.
  • the wire drawn out from the winding portion 33m faces the inner bottom surface (opposing portion) of the accommodating portion 82s, and the open portion 82z in which the wall portion is cut out. Is inserted.
  • the wire extends from the other surface side of the hook-shaped portion 52 to one surface side (the winding portion 13 side of the coil 3) of the hook-shaped portion 52 via the notch 52k of the hook-shaped portion 52.
  • the part facing the inner bottom face (opposing part) of the jetty part 82 (opposing part) and the accommodating part 82s is the connecting part 33c of the extending part 33A, and the part inserted through the notch part 52k is extended. It is the insertion part 33k of the part 33A.
  • the insertion portion 33k of the extension portion 33A extends toward the winding portion 13 of the coil 3, as shown in FIG. 9A, the insertion portion 33k contacts the elastic deformation portion 62 of the lens holding member 2. It is configured. Accordingly, when a strong impact is applied to the lens driving device 101 due to dropping or the like, the extending portion 33 ⁇ / b> A of the coil 3 is pressed against the elastic deformation portion 62 of the lens holding member 2. For this reason, this elastic deformation part 62 will elastically deform and will absorb the impact concerning extension part 33A. Accordingly, it is possible to provide the lens driving device 101 in which the extending portion 33A is difficult to be cut at the edge of the notch 52k, and the coil 3 is difficult to be disconnected.
  • the extending portion 33 ⁇ / b> A provided in contact with the elastic deformation portion 62 is connected to the end of the winding portion 13 located on the inner peripheral side of the winding portion 13.
  • the bending angle at the edge portion of the cutout portion 52k as compared with the other extension portion 33B (extension portion 33B connected to the winding end side of the coil 3) located on the outer peripheral side of the winding portion 13 Is narrower.
  • the thin-walled portion 62q of the elastically deformable portion 62 is a connecting portion 62r formed at two positions adjacent to each other as shown in FIG. Therefore, even if a strong impact is applied to the lens driving device 101 due to dropping or the like, and the extension portion 33A of the coil 3 is strongly pressed against the elastic deformation portion 62, the thin portion 62q is connected to two sides (connections). It can be supported by the part 62r) and receive an impact. Thereby, it is possible to prevent the thin-walled portion 62q of the elastically deformable portion 62 from breaking and falling off from the bowl-shaped portion 52.
  • the thin wall portion 62q is connected to the hook-shaped portion 52 by the connecting portion 62r whose thickness dimension is increased as it goes toward the hook-shaped portion 52 side.
  • the connecting portion 62r whose thickness dimension is increased as it goes toward the hook-shaped portion 52 side.
  • the winding portion 13 of the coil 3 wound around the outer periphery of the lens holding member 2 is disposed at a position surrounding the cylindrical portion 12 of the lens holding member 2 as shown in FIG.
  • One surface of the bowl-shaped part 52 so that a part of the coil 3 is sandwiched between the collar part 12h and the bowl-shaped part 52 while being supported from the inside by the coil support part 12j (see FIG. 5A). It is fixed to the side (upper surface side).
  • the inner peripheral surface of the winding part 13 of the coil 3 is supported in an isotropically balanced manner by the coil support part 12j, the lens in a state where the central axis of the coil 3 and the central axis of the lens holding member 2 coincide with each other. It is held by the holding member 2.
  • the optical axis of the lens of the lens body held by the lens holding member 2 and the central axis of the lens holding member 2 can be easily matched.
  • the wire rod of the coil 3 (extending portion 33B connected to the end portion on the winding end side of the winding portion 13) is shown in FIG. As shown, it is pulled out from the one surface side of the hook-shaped portion 52 to the other surface side of the hook-shaped portion 52 through the notch 52 k of the hook-shaped portion 52.
  • the extending portion 33B (wire) is inserted into the open portion 82z of the jetty portion 82, and is extended to face the inner bottom surface (opposing portion) of the accommodating portion 82s, and the holding portion 72B of the lens holding member 2 is extended. Entangled in In the example shown in FIG.
  • the holding portion 72B is wound three turns.
  • the part inserted into the notch 52k is the insertion part 33k of the extension part 33B, and the part facing the jetty part 82 (opposing part) and the inner bottom surface (opposing part) of the accommodating part 82s extends. It becomes the connection part 33c of the part 33B.
  • the winding portion 33m is formed in the holding portion 72B, and a part of the extending portion 33B is held in the holding portion 72B.
  • an open portion 82z in which the wall portion of the jetty portion 82 is notched is formed on the other side separated from the holding portion 72 (72A, 72B).
  • the extending portion 33 (connecting portion 33c) of the coil 3 is inserted through the open portion 82z. For this reason, even if the accommodating part 82s surrounded by the jetty part 82 is provided, it can be avoided that the jetty part 82 and the extending part 33 interfere with each other, and the opposing part of the lens holding member 2 and the leaf spring 6 can be avoided.
  • the distance from the inner part of the can be kept narrow. This can prevent the lens driving device 101 from increasing in the optical axis direction JD.
  • the yoke 4 is produced by subjecting a plate of soft magnetic material such as iron to punching or drawing, and as shown in FIG. 1, the outer shape is formed in a box shape having a storage portion 4s.
  • the yoke 4 has a rectangular annular outer yoke 4A formed on the outside, a flat upper surface portion 4B provided continuously with the upper end (Z1 side shown in FIG. 1) of the outer yoke 4A, and an upper surface. And four inner yokes 4C extending downward (Z2 direction shown in FIG. 1) from a part of the portion 4B.
  • step portions 4D positioned below the upper surface portion 4B are provided at the four corners where the inner yoke 4C is formed.
  • the yoke 4 configured as described above accommodates the coil 3 and the magnet 5 in the accommodating portion 4s as shown in FIG. 10B, and is engaged with the base member 18 as shown in FIG.
  • the outer shape is formed together with the member 18.
  • the inner yoke 4C of the yoke 4 is formed in an arc shape in plan view so as to face the four corners of the outer yoke 4A, etc. They are arranged at intervals.
  • each of the inner yokes 4C is disposed along the outer periphery of the cylindrical portion 12 of the lens holding member 2, and the coil 3 is disposed so as to face the inner peripheral surface. Further, each of the inner yokes 4C is disposed at a position facing each of the magnets 5 with the coil 3 interposed therebetween, as shown in FIG.
  • the inner yoke 4C of the yoke 4 has an arc shape, so that drawing can be easily performed. For this reason, the precision of the shape of the inner yoke 4C of the yoke 4 and the position of arrangement
  • the magnet 5 of the drive mechanism MK will be described.
  • the magnet 5 has a trapezoidal cross-sectional shape and a flat outer shape, and the four magnets 5 are positioned outside the coil 3 as shown in FIG.
  • the yokes 4 are equally arranged at the four corners.
  • the two inclined outer surfaces in the trapezoidal shape of the magnet 5 have a shape along the outer yoke 4A. For this reason, when assembling the lens driving device 101, the two outer surfaces can be pressed against the outer yoke 4A and arranged, and the magnet 5 can be easily positioned.
  • the magnet 5 is fixed to the yoke 4 with an adhesive so that a part of the leaf spring 6 (upper leaf spring 16) is sandwiched between the stepped portion 4D of the yoke 4. Has been.
  • FIG. 11A and 11B are views for explaining the leaf spring 6, in which FIG. 11A is a top view of the upper leaf spring 16, and FIG. 11B is an upper surface of the lower leaf spring 26A and the lower leaf spring 26B.
  • FIG. FIG. 12 is a view for explaining the connection state between the leaf spring 6 (lower leaf spring 26A) and the coil 3, and FIG. 12 (a) is an enlarged bottom view of the S portion shown in FIG. 10 (a).
  • FIG. 12B is an enlarged side view of the leaf spring 6 (lower leaf spring 26A), the coil 3, and the lens holding member 2 when the S portion shown in FIG. 10A is viewed from the X2 side.
  • FIG. 11A is a top view of the upper leaf spring 16
  • FIG. 11B is an upper surface of the lower leaf spring 26A and the lower leaf spring 26B.
  • FIG. FIG. 12 is a view for explaining the connection state between the leaf spring 6 (lower leaf spring 26A) and the coil 3
  • FIG. 12 (a) is an
  • FIGS. 13A and 13B are diagrams illustrating the base member 18 of the fixed side member RG.
  • FIG. 13A is an upper perspective view of the base member 18, and
  • FIG. 13B is a diagram illustrating the lower plate on the base member 18. It is the upper perspective view which assembled
  • the leaf spring 6 of the lens driving device 101 is made of a metal plate mainly made of a copper alloy, and is disposed between the lens holding member 2 and the yoke 4 as shown in FIG.
  • the upper plate spring 16 includes two lower plate springs (26A, 26B) disposed between the lens holding member 2 and the base member 18. Then, each of the lens holding member 2 and the leaf spring 6 (upper leaf spring 16, lower leaf spring 26A, lower leaf spring 26B) is engaged, and the lens holding member 2 is in the optical axis direction JD (Z direction shown in FIG. 2).
  • the lens holding member 2 is supported in the air so that it can be moved to.
  • the lower leaf spring 26 ⁇ / b> A and the lower leaf spring 26 ⁇ / b> B are electrically connected to both ends of the coil 3, respectively, and are also used as a power feeding member for the coil 3.
  • the upper leaf spring 16 of the leaf spring 6 has a substantially rectangular shape, and is fixed to the inner portion fixed to the lens holding member 2 and the fixed side member RG. It has an outer portion and four elastic arm portions 16g located between the inner portion and the outer portion. Specifically, two inner portions are provided at opposite positions, and each inner portion is fixed to the other end side (upper end side) of the lens holding member 2 in the optical axis direction JD. Two first portions 16a (four first portions 16a in total). The outer portion has four second portions 16b that are clamped and fixed by the yoke 4 and the magnet 5, and a crosspiece 16r that connects the four second portions 16b. Note that the yoke 4 and the magnet 5 here function as the fixed side member RG.
  • the first portion 16a is placed on the pedestal portion 12d of the lens holding member 2, and the first portion The inner part of the upper leaf spring 16 is fixed to the lens holding member 2 by fixing the 16a and the pedestal part 12d with an adhesive.
  • the second portion 16b contacts the upper surface of the magnet 5 and is not shown, but is sandwiched between the yoke 4 and the outer portion of the upper leaf spring 16 is It becomes fixed.
  • the upper leaf spring 16 has a substantially line-symmetric shape, and is fixed to the lens holding member 2 at two equal positions of the first portion 16a.
  • the yoke 4 integrated with the base member 18 is fixed at four equal positions of the second portion 16b. Accordingly, the upper leaf spring 16 can support the lens holding member 2 in the air in a well-balanced manner.
  • the lower leaf springs (26A, 26B) of the leaf spring 6 each have a semicircular shape, and the lens holding member 2 in the optical axis direction JD.
  • the inner portions of the lower leaf springs are composed of six third portions 26c engaged with the lens holding member 2 and three third portions 26c. It has four first connecting portions 26p that connect them, and a connecting plate portion 26h (see FIG. 12) that faces the extending portion 33 of the coil 3.
  • FIG.11 (b) the six protrusion parts 2t of the lens holding member 2 shown in FIG.6 and FIG.8 are shown in FIG.11 (b).
  • the lower leaf springs (26A, 26B) are inserted and fitted into circular through holes provided in the third portion 26c. Accordingly, the inner portions of the lower leaf spring 26 ⁇ / b> A and the lower leaf spring 26 ⁇ / b> B are positioned on the lens holding member 2 and fixed to the lens holding member 2. At this time, heat projection is applied to the projecting portion 2t of the lens holding member 2 so that the lower leaf spring 26A and the lower leaf spring 26B are more securely fixed to the lens holding member 2.
  • the connecting plate portion 26h on the inner side of the lower leaf spring (26A, 26B) is connected to the jetty portion 82 (opposing portion) of the lens holding member 2 when the lens driving device 101 is assembled. ).
  • one surface (upper surface) surface on the Z1 direction side shown in FIG.
  • the connecting portion 33c of the extending portion 33 of the coil 3 is provided between one surface of the inner side portion of the side leaf spring 26A and the lower leaf spring 26B) and the facing portion of the lens holding member 2 (the inner bottom surface of the pier portion 82 and the accommodating portion 82s). It becomes extended.
  • the inner side connection plate portion 26 h is provided with a through portion 26 t cut away from both sides at a position facing the open portion 82 z of the jetty portion 82.
  • a U-shaped (semi-circular) cutout portion 26k is provided on the end surface side having a gap with the winding portion 33m of the coil 3 so that the winding portion 33m side is opened.
  • the penetration part 26t is provided in the position where the edge part of the inner wall part 82u of the jetty part 82 and the outer side wall part 82v faces in planar view, and the wall end surface 26e which comprises the penetration part 26t is this It is provided to overlap the edge.
  • the notch 26k is formed to face the accommodating portion 82s so as to face the accommodating portion 82s.
  • the projecting portion constituting the holding portion 72 has the lower leaf spring ( 26A and 26B) from the inner portion so as to be located on the other surface (the surface opposite to the one surface facing the accommodating portion 82s) which is the lower surface of the connecting plate portion 26h (inner portion) (FIG. 12B). (Z2 direction). Further, a part of the winding portion 33m wound around the protruding portion is also located below (in the Z2 direction shown in FIG. 12B) from the inner portion.
  • the lower leaf springs (26A, 26B) of the leaf spring 6 and the extending portion 33 of the coil 3 configured as described above are conductive adhesives in which conductive fillers such as silver particles are dispersed in a synthetic resin. It is electrically connected with the agent CA. Specifically, before the lower leaf springs (26A, 26B) are incorporated into the lens holding member 2, first, the accommodating portion 82s surrounded by the jetty portion 82 of the lens holding member 2 is filled with the conductive adhesive CA. Thereafter, the lower leaf springs (26 A, 26 B) are attached to the lens holding member 2. Then, the projecting portion 2t of the lens holding member 2 is heat caulked, and the conductive adhesive CA is thermoset.
  • the lens holding member 2 is turned upside down so that the holding part 72 (protruding part) protrudes upward. Done.
  • the electrically conductive adhesive CA which has fluidity
  • the connecting portion 33c extending between the facing portion of the lens holding member 2 and the inner portion of the lower leaf spring (26A, 26B) is disposed in the accommodating portion 82s, and the connecting portion 33c is connected to the connecting portion 33c. It can be reliably embedded in the conductive adhesive CA.
  • the conductive adhesive CA is not limited to the thermosetting type, and may be an ultraviolet curable type.
  • conductive bonding is performed between the side surface of the binding pin 915 around which the coil end portion 934 (coil end portion) is wound and the surface of the image side spring member 914x (corresponding to the leaf spring 6) as in the conventional example.
  • the extending portion 33 of the coil 3 is not disposed between the facing portion of the lens holding member 2 and the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B).
  • the conductive adhesive CA that electrically connects the inner part of the leaf spring 6 is provided. For this reason, it is not necessary to wind the end part of the coil 3 for a longer time and to provide a binding part (entanglement pin 915) for ensuring electrical connection, or the protrusion height of the binding part (holding part 72) is increased. There is no need to raise it. As a result, the height dimension of the lens holding member 2 in the optical axis direction JD can be reduced, and as a result, the height dimension of the lens driving device 101 in the optical axis direction JD can be reduced.
  • the conductive adhesive CA is provided and connected between the facing portion of the lens holding member 2 disposed to face and the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B), Even when a strong impact due to dropping or the like is applied to the lens driving device 101 and the leaf spring 6 (lower leaf spring 26A, lower leaf spring 26B) is deformed, the conductive adhesive CA can be made difficult to peel off.
  • the conductive adhesive 955 or the like has the side surface of the binding pin 915 around which the coil end portion 934 (coil end portion) is wound and the surface of the image side spring member 914x (leaf spring 6).
  • the lens driving device 101 has a vertical force (Z direction shown in FIG. 2) that peels the conductive adhesive CA from the leaf spring 6 or the like. Since it does not act easily, this peeling can be prevented and the electrical connection between the coil 3 and the leaf spring 6 can be ensured reliably.
  • the connection is firmly fixed with the solder. Since the elasticity of the conductive adhesive CA layer at the connecting portion is high, the inner portion (connecting plate portion 26h) of the leaf spring 6 is allowed to move slightly. For this reason, when a tensile force acts on the inner portion, the tensile force can be relaxed by the movement of the inner portion. As a result, even when a strong impact is applied to the lens driving device 101 due to dropping or the like, it is possible to prevent the inner portion from being peeled off, and to ensure the connection between the coil 3 and the leaf spring 6 more reliably. .
  • the extending portion 33 can be made more difficult to be cut at the edge of the notch portion 52k.
  • the connecting portion 33c of the extending portion 33 is electrically conductive between the facing portion of the lens holding member 2 (the inner bottom surface of the accommodating portion 82s) and the inner portion (the connecting plate portion 26h) of the lower leaf springs (26A, 26B). Since it is embedded in the adhesive CA, the extension 33 of the coil 3 and the inner part of the leaf spring 6 can be reliably connected by this connection portion 33c.
  • the holding part 72 which consists of the protrusion part which protrudes in the same direction as the jetty part 82 from the one end part of the lens holding member 2 adjacent to the jetty part 82, and the extension part 33 of the coil 3 is in this protrusion part. Since it is wound, the winding part 33m of the extending part 33 can be easily held.
  • a conductive adhesive CA is provided between the winding portion 33m of the coil 3 and the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B). In addition to the connection portion 33c of the coil 3, this conductive adhesive CA is provided. Even the winding portion 33m can be electrically connected to the leaf spring 6. As a result, the area of the extending portion 33 in contact with the conductive adhesive CA can be increased, and the conductive connection between the leaf spring 6 and the coil 3 can be reduced while the conductive connection can be ensured. .
  • the notch part 26k which faced the accommodating part 82s formed in the jetty part 82 is formed in the connection board part 26h of the leaf
  • the accommodating portion 82s is filled with the conductive adhesive CA and then the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B) is attached to the lens holding member 2, the conductive adhesive CA is removed. Even if the filling amount varies, the notch 26k can absorb the variation in the amount. That is, when the amount of the conductive adhesive CA is large, the conductive adhesive CA can flow out from the notch portion 26k to the other side of the inner portion of the leaf spring 6 (connection plate portion 26h). Furthermore, it is possible to confirm whether or not the conductive adhesive CA is appropriately provided by confirming the notch portion 26k.
  • the inner portion of the leaf spring 6 (connection plate portion) 26h)
  • the conductive adhesive CA to the other surface side or causing the conductive adhesive CA to flow out
  • the extended portion 33 of the coil 3 and the inner portion of the leaf spring 6 can be more securely connected.
  • the area of the extended portion 33 in contact with the conductive adhesive CA can be increased, and the conduction resistance between the leaf spring 6 and the extended portion 33 of the coil 3 can be further reduced.
  • the accommodating portion 82s is filled with the conductive adhesive CA, and then the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B) is disposed on the lens holding member 2, it faces toward the winding portion 33m. Since the opened notch 26k is formed in the inner part (connection plate part 26h), the conductive adhesive CA is pushed out to the winding part 33m side, so that the end face of the inner part (the end face of the notch 26k is The conductive adhesive CA can be reliably provided between the winding portion 33m and the winding portion 33m, and the conduction resistance between the inner portion of the leaf spring 6 and the extending portion 33 of the coil 3 can be lowered more reliably and electrically. Can be connected.
  • the jetty portion 82 is formed such that the interval between the inner wall portion 82u and the outer wall portion 82v is narrower on the other side on the open portion 82z side than on one side on the holding portion 72 (72A, 72B) side.
  • plate spring 6 can be made smaller.
  • the open portion 82z side is narrowly formed and the extending portion 33 (connecting portion 33c) is inserted into the open portion 82z, the conductive adhesive CA filled in the accommodating portion 82s flows out through the open portion 82z. Can be difficult.
  • the through portion 26t is provided in the inner portion at a position facing the open portion 82z (see FIG. 9 (a))
  • the conductive adhesive CA is temporarily provided. Even if it moves in the direction away from the holding part 72 and tries to flow out from the opening part 82z, the wall end face 26e constituting the penetrating part 26t can prevent further flow out.
  • the outer portions of the lower leaf springs (26A, 26B) include four fourth portions 26d engaged with the base member 18 and two fourth portions 26d. Two second connecting portions 26q that connect the two. Needless to say, the outer portion of the lower leaf spring (26A, 26B) has a larger distance from the center of the lens holding member 2 than the inner portion, as shown in FIG. positioned.
  • the lower leaf spring 26 ⁇ / b> A and the lower leaf spring 26 ⁇ / b> B are configured in a substantially line-symmetric shape, and the four portions of the third portion 26 c with respect to the lens holding member 2.
  • the base member 18 is connected at four equal positions of the fourth portion 26d.
  • the lens holding member 2 can be supported in the air with good balance. Therefore, the lens holding member 2 is supported by the leaf spring 6 (upper leaf spring 16, lower leaf spring 26A and lower leaf spring 26B) configured as described above so as to be movable in the optical axis direction JD.
  • the fixed member RG of the lens driving device 101 includes a yoke 4 and a magnet 5 that fix the second portion 16b of the upper leaf spring 16, and a base member 18 that fixes the fourth portion 26d of the lower leaf spring (26A, 26B). , And is configured.
  • the fixed side member RG of the upper leaf spring 16 has been described in the items of the yoke 4 and the magnet 5 which are also the drive mechanism MK, description thereof will be omitted, and the fixed side member RG of the lower leaf spring (26A, 26B). Only explained.
  • the base member 18 of the fixed-side member RG is manufactured by injection molding using a synthetic resin such as liquid crystal polymer (LCP), and has a rectangular plate shape as shown in FIGS. A circular opening 18k is formed at the center. Further, on the upper surface of the base member 18, six projecting portions 18 t projecting upward are provided at the four corners. And the protrusion part 18t provided in the upper surface of the base member 18 is penetrated by the through-hole provided in the 4th part 26d of the lower leaf
  • LCP liquid crystal polymer
  • a terminal 7 made of a metal plate made of a material such as copper, iron, or an alloy containing them as a main component is embedded in the base member 18 by insert molding.
  • Each of the two electrically insulated terminals 7 (terminal 7A and terminal 7B) is electrically connected to a substrate on which an imaging element (not shown) is mounted, and power can be supplied from these two terminals 7. It is like that.
  • One terminal 7A of the terminal 7 is electrically connected to the lower leaf spring 26A, and the other terminal 7B of the terminal 7 is electrically connected to the lower leaf spring 26B.
  • a current can be passed from the terminal 7B to the coil 3 via the lower leaf spring 26A and the lower leaf spring 26B.
  • connection member 57 made of a metal plate made of a material such as copper, iron, or an alloy containing them as a main component is also inserted like the terminal 7.
  • the part of the connecting member 57 is partially exposed at the four corners of the yoke 4 as shown in FIG. After the inner wall of the outer yoke 4A of the yoke 4 and the outer peripheral side surface of the base member 18 are positioned and positioned, four joints between the connecting member 57 of the base member 18 and the four corners of the yoke 4 are welded, 4 is fixed to the base member 18.
  • the lens driving device 101 electrically connects the extending portion 33 and the inner portion of the coil 3 between the facing portion of the lens holding member 2 and the inner portion of the leaf spring 6. Since the conductive adhesive CA is provided, it is not necessary to wrap the end portion of the coil 3 for a longer time to secure an electrical connection, or to provide a tangling pin (915). There is no need to increase the protruding height. As a result, the height dimension of the lens holding member 2 in the optical axis direction JD can be reduced, and as a result, the height dimension of the lens driving device 101 in the optical axis direction JD can be reduced.
  • the conductive adhesive CA is provided and connected between the facing portion of the lens holding member 2 disposed in the facing state and the inner portion of the leaf spring 6, a strong impact due to dropping or the like is applied to the lens driving device. Even when added to 101, the conductive adhesive CA can be made difficult to peel off.
  • the connecting portion 33c is embedded in the conductive adhesive CA between the facing portion and the inner portion, the extending portion 33 of the coil 3 and the inner portion of the leaf spring 6 are securely connected by this connecting portion 33c. Can be electrically connected. Further, since the extension part 33 of the coil 3 and the inner part of the leaf spring 6 are electrically connected between the facing part and the inner part, the protruding part of the holding part 72 in which the extension part 33 is entangled. Even in the case of a portion, it is not necessary to increase the protruding dimension. For this reason, it is possible to reduce the height dimension of the lens holding member 2 in the optical axis direction JD, and consequently, it is possible to reduce the height dimension of the lens driving device 101 in the optical axis direction JD.
  • connection portion 33c extending between the facing portion of the lens holding member 2 and the connection plate portion 26h of the inner portion is disposed in the housing portion 82s, and the connection portion 33c is connected to the conductive adhesive CA. Can be reliably buried. Thereby, the extension part 33 of the coil 3 and the inner side part (connection board part 26h) of the leaf
  • the open part 82z by which the wall part of the jetty part 82 was notched is formed in the other side spaced apart from the holding
  • Three extending portions 33 can be inserted. For this reason, even if the accommodating portion 82s surrounded by the jetty portion 82 is provided, it is possible to prevent the jetty portion 82 and the extending portion 33 from interfering with each other, so that the opposing portion of the lens holding member 2 and the leaf spring 6 can be prevented.
  • the distance from the inner portion can be kept narrow. This can prevent the lens driving device 101 from increasing in the optical axis direction JD. Further, since the extending portion 33 is inserted into the opening portion 82z, the conductive adhesive CA filled in the accommodating portion 82s can be prevented from flowing out through the opening portion 82z.
  • the through portion 26t is provided in the inner portion at the position facing the opening portion 82z, even if the conductive adhesive CA moves in a direction away from the holding portion 72 and flows out of the opening portion 82z. Further, it is possible to prevent further outflow at the end edge portion constituting the through portion 26t.
  • the lens holding member 2 has a holding portion 72 formed of a protruding portion that protrudes in the same direction as the jetty portion 82 and the extending portion 33 of the coil 3 is wound around this protruding portion, the extending portion 33 extends.
  • the winding portion 33m of the portion 33 can be easily held.
  • a conductive adhesive CA is provided between the winding portion 33m of the coil 3 and the inner portion of the leaf spring 6, and the conductive portion CA can be conductively connected to the winding portion 33m in addition to the connection portion 33c.
  • connection plate portion 26h of the leaf spring 6 is formed with a notch portion 26k facing the accommodating portion 82s formed by the jetty portion 82, and the conductive adhesive CA is exposed from the notch portion 26k. Therefore, the conductive adhesive CA is also in contact with the end face of the notch 26k, and the electrical connection between the inner portion of the leaf spring 6 and the extending portion 33 of the coil 3 is ensured.
  • the accommodating portion 82s is filled with the conductive adhesive CA, and then the leaf spring 6 is attached to the lens holding member 2, the cutout portion is provided even if the filling amount of the conductive adhesive CA varies. The variation in the amount can be absorbed by 26k.
  • the conductive adhesive CA can flow out from the notch portion 26k to the other side of the inner portion of the leaf spring 6 (connection plate portion 26h). Furthermore, it is possible to confirm whether or not the conductive adhesive CA is appropriately provided by confirming the notch portion 26k.
  • FIG. 14 is a diagram for explaining a modification of the lens driving device 101 according to the first embodiment of the present invention.
  • FIG. 14A is a schematic diagram of the modification 1 and the modification 2
  • FIG. 14B is a schematic diagram of Modification 3 and Modification 4.
  • FIG. 14C is a schematic diagram of Modification 5 and Modification 6.
  • FIG. 15 is a diagram illustrating a modification of the lens driving device 101 according to the first embodiment of the present invention, and is a schematic diagram of Modification 7 and Modification 8.
  • the side wall of the holding part 72 (72A, 72B) was used suitably as the side wall part 82w of the jetty part 82 of the lens holding member 2, it is not restricted to this.
  • the new side wall part C82x may be provided in the holding
  • the accommodating portion 82s is configured in a substantially rectangular shape (in plan view), but is not limited thereto.
  • it may be a substantially circular (elliptical) accommodation portion D82s surrounded by a curved jetty D82 as shown in FIG.
  • the holding portion 72 (72A, 72B) is disposed adjacent to the substantially rectangular accommodating portion 82s.
  • the present invention is not limited to this.
  • an arrangement in which the holding portion D72 partially enters the housing portion D82s side may be employed.
  • a concave portion is formed in the accommodating portion D82s, but it can be said that the accommodating portion D82s having the concave portion is adjacent to the holding portion D72.
  • the accommodating portion 82s is adjacent to the open portion 82z in which the wall portion is cut out.
  • the present invention is not limited to this.
  • annular form may be sufficient.
  • the holding portion 72 (72A, 72B) is disposed adjacent to the substantially rectangular accommodating portion 82s.
  • the present invention is not limited to this.
  • the holding portion E72 may be disposed in the housing portion E82s.
  • Such a configuration is also included in the concept that the holding portion E72 and the accommodating portion E82s are provided at positions adjacent to each other because the holding portion E72 is adjacent to the inside of the accommodating portion E82s.
  • the shape of the cutout portion 26k in the connection plate portion 26h of the lower leaf spring (26A, 26B) is a semicircular shape, but is not limited thereto.
  • a rectangular notch C26k as shown in FIG. 15 may be used.
  • the holding portion 72 is configured by the protruding portion that protrudes from the one end portion of the lens holding member 2 (the hook-shaped portion 52) in the optical axis direction JD, but is not limited thereto.
  • the protrusion part which protrudes to the side may be sufficient, and the hook part which is not made to protrude may be sufficient.
  • the lower leaf springs (26A, 26B) are divided into two pairs to be electrically connected to each of the extending portions 33 (33A, 33B) of the coil 3,
  • the upper leaf spring is divided into two and electrically connected to each of the extending portions 33 (33A, 33B) of the coil 3 by the conductive adhesive CA. But it ’s okay.
  • Lens holding member 3 Coil 52 Cage-like part 52k Notch part 62 Elastic deformation part 62q Thin part 62r Connecting part 72, 72A, 72B, D72, D72 Holding part 82, C82, D82, E82 Jetty part 82s Housing part 82z Open part 13 Winding portion 33, 33A, 33B Extension portion 33c Connection portion 33m Winding portion 4 Yoke 5 Magnet 6 Leaf spring (26A, 26B lower leaf spring) 26c 3rd part (inner part) 26d Fourth part (outer part) 26h Connection plate (inner part) 26k, C26k Notch 26t, C26t Through-hole MK Drive mechanism RG Fixed side member CA Conductive adhesive JD Optical axis direction 101 Lens drive device

Abstract

[Problem] The purpose of the present invention is to provide a lens drive device wherein the height in the optical axis direction is reduced. [Solution] A lens drive device 101 is characterized by being provided with: a lens holding member 2 capable of holding a lens body; a plate spring 6 that supports the lens holding member 2 such that the lens holding member can move in the optical axis direction; a fixing-side member to which the plate spring 6 is fixed; and a drive mechanism MK that moves the lens holding member 2 in the optical axis direction. The lens drive device is also characterized in that: a coil 3 of the drive mechanism MK has a winding section 13 formed by winding a conductive wire rod on the outer periphery of the lens holding member 2, and an extending section 33 connected to an end portion of the winding section 13; one end portion of the lens holding member 2 has a facing portion (82, 82s) that faces an inner portion 26c of the plate spring 6 by being separated from the plate spring, and a holding section 72 that holds a part of the extending section 33; and a conductive adhesive CA that electrically connects the extending section 33 and the inner portion 26c to each other is provided between the facing section (82, 82s) and the inner portion 26c.

Description

レンズ駆動装置Lens drive device
　本発明は、例えばカメラ付き携帯機器に搭載されるレンズ駆動装置に関する。 The present invention relates to a lens driving device mounted on a mobile device with a camera, for example.
　近年、携帯電話に代表される携帯機器にカメラ機構が搭載されているのは一般的となってきた。そして、この小型の携帯機器に搭載されるカメラ機構の主要部品であるレンズ駆動装置には、小型化の要求に加え、精度良くレンズ体（鏡筒）を駆動させるという要求が高まってきた。この２つの要求を満たすべきレンズ駆動装置として、レンズ体を保持するレンズホルダ（レンズ保持部材）を駆動するための磁気回路をレンズホルダの四方に設けたものが良く知られている。 In recent years, it has become common for camera devices to be installed in portable devices typified by cellular phones. In addition to the demand for downsizing, the lens driving device, which is a main part of the camera mechanism mounted on the small portable device, has been increasingly demanded to drive the lens body (lens barrel) with high accuracy. As a lens driving device that should satisfy these two requirements, a device in which a magnetic circuit for driving a lens holder (lens holding member) for holding a lens body is provided on four sides of the lens holder is well known.
　このようなレンズ駆動装置として、特許文献１（従来例）では、図１６に示すようなレンズ駆動装置９０１が提案されている。図１６は、従来例のレンズ駆動装置９０１を説明する図であって、図１６（ａ）は、レンズ駆動装置９０１を下方側から見た分解斜視図であり、図１６（ｂ）は、コイルの端部（第１コイル９３１のコイル端部９３４）と板ばね（像側バネ部材９１４ｘ）との電気的な接続方法を説明する工程図である。 As such a lens driving device, Patent Document 1 (conventional example) proposes a lens driving device 901 as shown in FIG. FIG. 16 is a diagram for explaining a conventional lens driving device 901. FIG. 16 (a) is an exploded perspective view of the lens driving device 901 viewed from below, and FIG. 16 (b) is a coil. It is process drawing explaining the electrical connection method of the edge part (coil edge part 934 of the 1st coil 931) and a leaf | plate spring (image side spring member 914x).
　図１６（ａ）に示すレンズ駆動装置９０１は、レンズを保持し光軸方向へ移動可能な移動体９０３（レンズホルダ９３７及びスリーブ９１３）と、移動体９０３を光軸方向へ駆動させる磁気駆動機構９０５（第１コイル９３１、第２コイル９３２、４つのマグネット９１７及びヨーク９１８）と、磁気駆動機構９０５及び移動体９０３などが搭載された支持体９０２（バネ支持部材９１１、ヨーク９１８及びホルダ９１９）と、支持体９０２と移動体９０３とを接続する像側バネ部材９１４ｘ及び被写体側バネ部材９１４ｙと、を備えて構成される。そして、レンズ駆動装置９０１は、像側バネ部材９１４ｘを介してコイル（第１コイル９３１及び第２コイル９３２）に所定の電流を流し、磁気駆動機構９０５で生じる電磁力により、光軸方向に沿って移動体９０３を移動させるものである。 A lens driving device 901 shown in FIG. 16A includes a moving body 903 (lens holder 937 and sleeve 913) that holds a lens and can move in the optical axis direction, and a magnetic driving mechanism that drives the moving body 903 in the optical axis direction. 905 (first coil 931, second coil 932, four magnets 917 and yoke 918), and a support 902 (spring support member 911, yoke 918 and holder 919) on which a magnetic drive mechanism 905 and a moving body 903 are mounted. And an image-side spring member 914x and a subject-side spring member 914y that connect the support body 902 and the moving body 903. Then, the lens driving device 901 causes a predetermined current to flow through the coil (first coil 931 and second coil 932) via the image-side spring member 914x, and along the optical axis direction by electromagnetic force generated by the magnetic driving mechanism 905. The moving body 903 is moved.
　また、従来例のレンズ駆動装置９０１では、図１６（ｂ）に示すような接続方法で、コイルの端部（図１６（ｂ）では第１コイル９３１のコイル端部９３４）と板ばね（像側バネ部材９１４ｘ）とを電気的に接続している。具体的には、先ず、最初の工程Ｂ１では、スリーブ９１３に絡げピン９１５を圧入などの方向で保持された状態としておく。次に、次の工程Ｂ２では、第１コイル９３１の巻き始めのコイル端部９３４を絡げピン９１５の周りに例えば７ターンから９ターン程度巻き付ける（図１６（ｂ）では９ターン）。次に、次の工程Ｂ３では、絡げピン９１５の先端にレーザを照射して、コイル端部９３４の表面から絶縁被覆層を除去するとともに、絡げピン９１５の先端を溶融変形させる。その結果、絡げピン９１５の先端には導電性の膨らみ部分９５１が形成される。次に、スリーブ９１３の端部に像側バネ部材９１４ｘを装着する。そして、最後に、最後の工程Ｂ４では、第１コイル９３１のコイル端部９３４（膨らみ部分９５１）と像側バネ部材９１４ｘとを導電性接着剤９５５等で接続する。このようにして、コイルの端部と板ばねとを電気的に接続している。 Further, in the lens driving device 901 of the conventional example, a coil end (coil end 934 of the first coil 931 in FIG. 16B) and a leaf spring (image) are connected by a connection method as shown in FIG. The side spring member 914x) is electrically connected. Specifically, first, in the first step B1, the pin 915 is held in a direction such as press-fitting by tying the sleeve 913. Next, in the next step B2, the coil end 934 at the start of winding of the first coil 931 is wound around the pin 915 and wound, for example, about 7 to 9 turns (9 turns in FIG. 16B). Next, in the next step B3, the tip of the binding pin 915 is irradiated with a laser to remove the insulating coating layer from the surface of the coil end 934, and the tip of the binding pin 915 is melted and deformed. As a result, a conductive bulge portion 951 is formed at the tip of the binding pin 915. Next, the image-side spring member 914x is attached to the end of the sleeve 913. Finally, in the last step B4, the coil end portion 934 (bulging portion 951) of the first coil 931 and the image side spring member 914x are connected by the conductive adhesive 955 or the like. In this way, the end of the coil and the leaf spring are electrically connected.
特開２０１０－２８６５３２号公報JP 2010-286532 A
　しかしながら、従来例の構成では、導電性接着剤９５５等は、コイル端部９３４（コイルの端部）が巻かれた絡げピン９１５の側面側と像側バネ部材９１４ｘ（板ばね）の面との間、すなわちＬ字状に配置された部材の間を繋げるように設けられている。そして、コイルの端部と板ばねとの電気的な接続を確実にするため、絡げピン９１５の高さを高くして、コイル端部９３４をより長く巻き付けるようにしている（７ターンから９ターン程度）。このため、レンズ保持部材（レンズホルダ９３７）の光軸方向における高さ寸法が大きくなり、ひいてはレンズ駆動装置の高さ寸法を小さくすることが図れないという課題があった。 However, in the configuration of the conventional example, the conductive adhesive 955 and the like are formed on the side surface side of the binding pin 915 around which the coil end portion 934 (coil end portion) is wound and the surface of the image side spring member 914x (leaf spring). Between the members arranged in an L shape. Then, in order to ensure electrical connection between the coil end and the leaf spring, the height of the binding pin 915 is increased so that the coil end 934 is wound longer (from 7 turns to 9). About the turn). For this reason, the height dimension of the lens holding member (lens holder 937) in the optical axis direction is increased, and as a result, there is a problem that the height dimension of the lens driving device cannot be reduced.
　本発明は、上述した課題を解決するもので、光軸方向における高さ寸法を小さくすることが可能なレンズ駆動装置を提供することを目的とする。 This invention solves the subject mentioned above, and aims at providing the lens drive device which can make the height dimension in an optical axis direction small.
　この課題を解決するために、本発明のレンズ駆動装置は、レンズ体を保持可能な筒状のレンズ保持部材と、内側部分及び外側部分を有するとともに該レンズ保持部材に前記内側部分が固定され前記レンズ保持部材を光軸方向に移動可能に支持する板ばねと、該板ばねの前記外側部分が固定される固定側部材と、前記レンズ保持部材を光軸方向に沿って移動させる少なくとも磁石及びコイルを有して構成される駆動機構と、を備えたレンズ駆動装置において、前記板ばねの前記内側部分が、前記レンズ保持部材の光軸方向における一端部に固定されており、前記コイルが、前記レンズ保持部材の光軸方向における前記一端部と他端部との間の外周に導電性の線材が巻かれて形成された巻回部と、該巻回部の端部に繋がる延在部と、を有し、前記レンズ保持部材の前記一端部には、前記内側部分と光軸方向において離間して対向する対向部と、前記延在部の一部が保持される保持部と、を有し、前記対向部と前記内側部分との間に、前記延在部と前記内側部分とを電気的に接続する導電性接着剤が設けられていることを特徴としている。 In order to solve this problem, the lens driving device of the present invention includes a cylindrical lens holding member capable of holding a lens body, an inner portion and an outer portion, and the inner portion is fixed to the lens holding member. A leaf spring that supports the lens holding member so as to be movable in the optical axis direction, a fixed side member to which the outer portion of the leaf spring is fixed, and at least a magnet and a coil that move the lens holding member along the optical axis direction A driving mechanism comprising: a driving mechanism, wherein the inner portion of the leaf spring is fixed to one end in the optical axis direction of the lens holding member, and the coil is A winding part formed by winding a conductive wire around the outer periphery between the one end part and the other end part in the optical axis direction of the lens holding member; and an extension part connected to the end part of the winding part; Have, before The one end portion of the lens holding member has a facing portion that faces the inner portion with a distance in the optical axis direction, and a holding portion that holds a part of the extending portion, and the facing portion A conductive adhesive that electrically connects the extending part and the inner part is provided between the inner part and the inner part.
　これによれば、本発明のレンズ駆動装置は、コイルの端部をより長く巻き付け電気的な接続を確保するための絡げ部を設ける必要がない、或いは絡げ部の突出高さを高くする必要がない。このことにより、レンズ保持部材の光軸方向における高さ寸法を小さくすることができ、ひいてはレンズ駆動装置の光軸方向における高さ寸法を小さくすることができる。 According to this, in the lens driving device of the present invention, it is not necessary to wind the end portion of the coil for a longer time to provide a binding portion for ensuring electrical connection, or to increase the protruding height of the binding portion. There is no need. As a result, the height dimension of the lens holding member in the optical axis direction can be reduced, and as a result, the height dimension of the lens driving device in the optical axis direction can be reduced.
　また、本発明のレンズ駆動装置は、前記延在部が前記対向部と前記板ばねの前記内側部分との間に延在する接続部を有し、該接続部が前記導電性接着剤に埋設されていることを特徴としている。 In the lens driving device of the present invention, the extending portion has a connecting portion extending between the facing portion and the inner portion of the leaf spring, and the connecting portion is embedded in the conductive adhesive. It is characterized by being.
　これによれば、接続部が対向部と内側部分との間で導電性接着剤に埋設されているので、この接続部で、コイルの延在部と板ばねの内側部分とを確実に導通接続させることができる。また、対向部と内側部分との間でコイルの延在部と板ばねの内側部分とを導通接続させているので、保持部を延在部が絡げられる突出した絡げ部とした場合でも、その突出寸法を大きくする必要がない。このため、レンズ保持部材の光軸方向における高さ寸法を小さくすることが可能となり、ひいてはレンズ駆動装置の光軸方向における高さ寸法を小さくすることができる。 According to this, since the connecting portion is embedded in the conductive adhesive between the facing portion and the inner portion, the connecting portion reliably connects the extending portion of the coil and the inner portion of the leaf spring. Can be made. In addition, since the extension part of the coil and the inner part of the leaf spring are conductively connected between the facing part and the inner part, even when the holding part is a protruding binding part in which the extension part is entangled It is not necessary to increase the protruding dimension. For this reason, the height dimension of the lens holding member in the optical axis direction can be reduced, and consequently the height dimension of the lens driving device in the optical axis direction can be reduced.
　また、本発明のレンズ駆動装置は、前記対向部には、前記内側部分側へ突出する突堤部で形成された収容部が設けられており、該収容部に前記接続部を埋設する前記導電性接着剤が充填されていることを特徴としている。 Further, in the lens driving device of the present invention, the facing portion is provided with a housing portion formed by a jetty portion protruding toward the inner portion side, and the conductive portion is embedded in the housing portion. It is characterized by being filled with an adhesive.
　これによれば、導電性接着剤を充填する際に、流動性を有する導電性接着剤を所望の位置（収容部）に保持することができる。このため、対向部と内側部分との間に延在している接続部がこの収容部に配設されて、接続部を導電性接着剤に確実に埋設させることができる。このことにより、コイルの延在部と板ばねの内側部分とをより確実に導通接続させることができる。 According to this, when filling the conductive adhesive, the conductive adhesive having fluidity can be held in a desired position (accommodating portion). For this reason, the connection part extended between the opposing part and the inner side part is arrange | positioned in this accommodating part, and a connection part can be reliably embed | buried in a conductive adhesive. Thereby, the extension part of a coil and the inner side part of a leaf | plate spring can be more conductively connected.
　また、本発明のレンズ駆動装置は、前記突堤部が前記収容部の周囲に設けられた壁部を有し、前記突堤部の一方側には、前記保持部が設けられており、前記保持部と離間した前記突堤部の他方側には、前記壁部が切り欠かれた開放部が形成されており、該開放部に前記延在部が挿通されていることを特徴としている。 Further, in the lens driving device of the present invention, the jetty part has a wall part provided around the housing part, and the holding part is provided on one side of the jetty part, and the holding part An opening portion in which the wall portion is cut out is formed on the other side of the jetty portion spaced apart from the wall, and the extension portion is inserted through the opening portion.
　これによれば、開放部にコイルの延在部を挿通することができ、突堤部で囲まれた収容部を設けても、突堤部と延在部とが干渉することを回避することができる。このため、レンズ保持部材の対向部と板ばねの内側部分との間隔を狭く保つことができる。このことにより、レンズ駆動装置が光軸方向に大きくなるのを抑制することができる。また、開放部には延在部が挿通されているので、収容部に充填された導電性接着剤が開放部を介して流れ出し難くすることができる。 According to this, the extension part of the coil can be inserted into the open part, and even if the housing part surrounded by the jetty part is provided, it is possible to avoid the interference between the jetty part and the extension part. . For this reason, the space | interval of the opposing part of a lens holding member and the inner part of a leaf | plate spring can be kept narrow. This can prevent the lens driving device from becoming large in the optical axis direction. Moreover, since the extension part is inserted in the open part, the conductive adhesive filled in the storage part can be made difficult to flow out through the open part.
　また、本発明のレンズ駆動装置は、前記開放部と対向する位置における前記内側部分には、前記導電性接着剤が前記保持部から離れる方向へ移動するのを防止する貫通部が設けられていることを特徴としている。 In the lens driving device of the present invention, a through portion that prevents the conductive adhesive from moving in a direction away from the holding portion is provided in the inner portion at a position facing the opening portion. It is characterized by that.
　これによれば、仮に導電性接着剤が保持部から離れる方向へ移動して開放部から流れ出そうとしても、貫通部を構成する端縁部でそれ以上の流れ出しを食い止めることができる。 According to this, even if the conductive adhesive moves in the direction away from the holding portion and tries to flow out from the open portion, it is possible to prevent further flow out at the edge portion constituting the penetrating portion.
　また、本発明のレンズ駆動装置は、前記保持部が、前記収容部と隣り合う位置において、前記レンズ保持部材の前記一端部から前記突堤部と同じ方向へ突出する突出部からなり、前記延在部が前記突出部に巻き付けられる巻き付け部を有し、該巻き付け部と前記内側部分との間に前記導電性接着剤が設けられていることを特徴としている。 In the lens driving device of the present invention, the holding portion includes a protruding portion that protrudes in the same direction as the jetty portion from the one end portion of the lens holding member at a position adjacent to the housing portion, and extends A part has a winding part wound around the protrusion part, and the conductive adhesive is provided between the winding part and the inner part.
　これによれば、コイルの延在部を突出部（保持部）に巻き付けて、延在部の巻き付け部を容易に保持することができる。しかもコイルの巻き付け部と板ばねの内側部分との間に導電性接着剤が設けられており、接続部に加えてこの巻き付け部で導通接続させることができる。このことにより、導電性接着剤に接する延在部の面積を広くすることができ、確実に導通接続させることができるとともに、板ばねとコイルとの導通抵抗を小さくすることができる。 According to this, the extending part of the coil can be wound around the protruding part (holding part), and the winding part of the extending part can be easily held. In addition, a conductive adhesive is provided between the coil winding portion and the inner portion of the leaf spring, and the conductive connection can be established at this winding portion in addition to the connection portion. As a result, the area of the extending portion in contact with the conductive adhesive can be increased, and the conductive connection can be reliably established, and the conduction resistance between the leaf spring and the coil can be reduced.
　また、本発明のレンズ駆動装置は、前記内側部分は、前記収容部と対向する一面及び該一面と反対側の面である他面を有し、前記突出部が、その先端が前記他面側に位置するように前記内側部分から突出しているとともに、前記巻き付け部が、前記収容部に対向して位置する前記内側部分の端面と隙間を有して対向するように設けられ、前記端面側に位置する当該内側部分には、前記巻き付け部側が開放された切欠き部が形成されており、前記切欠き部から前記導電性接着剤が露出していることを特徴としている。 Further, in the lens driving device of the present invention, the inner portion has one surface that faces the housing portion and another surface that is a surface opposite to the one surface, and the protruding portion has a tip at the other surface side. Projecting from the inner portion so as to be located at the end portion, and the winding portion is provided so as to be opposed to the end surface of the inner portion facing the accommodating portion with a gap, A cutout portion in which the winding portion side is opened is formed in the inner portion that is positioned, and the conductive adhesive is exposed from the cutout portion.
　これによれば、切欠き部の端面にも導電性接着剤が接することとなり、板ばねの接着が確実なものとなる。また、収容部に導電性接着剤を充填して、その後に板ばねをレンズ保持部材に装着する場合には、導電性接着剤の充填量がばらついても、その量のばらつきを吸収できる。つまり、導電性接着剤が多い場合には、切欠き部から導電性接着剤が板ばねの内側部分の他面側に流れ出させることが可能である。更に、切欠き部を介して、導電性接着剤が適切に設けられているかを確認することができる。 According to this, the conductive adhesive comes into contact with the end face of the notch, and the leaf spring is reliably adhered. Further, when the accommodating portion is filled with the conductive adhesive and then the leaf spring is attached to the lens holding member, even if the filling amount of the conductive adhesive varies, the variation in the amount can be absorbed. That is, when there is much conductive adhesive, the conductive adhesive can flow out from the notch to the other side of the inner part of the leaf spring. Furthermore, it can be confirmed whether the conductive adhesive is appropriately provided through the notch.
　本発明のレンズ駆動装置は、コイルの端部をより長く巻き付け電気的な接続を確保するための絡げ部を設ける必要がない、或いは絡げ部の突出高さを高くする必要がない。このことにより、レンズ保持部材の光軸方向における高さ寸法を小さくすることができ、ひいてはレンズ駆動装置の光軸方向における高さ寸法を小さくすることができる。 In the lens driving device of the present invention, it is not necessary to wind the end of the coil for a longer time and to provide a binding portion for ensuring electrical connection or to increase the protruding height of the binding portion. As a result, the height dimension of the lens holding member in the optical axis direction can be reduced, and as a result, the height dimension of the lens driving device in the optical axis direction can be reduced.
本発明の第１実施形態のレンズ駆動装置を説明する分解斜視図である。It is a disassembled perspective view explaining the lens drive device of 1st Embodiment of this invention. 本発明の第１実施形態のレンズ駆動装置を説明する図であって、図２（ａ）は、上方斜視図であり、図２（ｂ）は、図２（ａ）に示すＹ２側から見た正面図である。2A and 2B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 2A is an upper perspective view, and FIG. 2B is a view from the Y2 side shown in FIG. FIG. 本発明の第１実施形態のレンズ駆動装置を説明する図であって、図３（ａ）は、図２に示すＺ１側から見た上面図であり、図３（ｂ）は、図２に示すＺ２側から見た底面図である。3A and 3B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 3A is a top view seen from the Z1 side shown in FIG. 2, and FIG. It is the bottom view seen from the Z2 side shown. 本発明の第１実施形態のレンズ駆動装置を説明する図であって、図４（ａ）は、図２（ａ）に示すヨークを省略した上方斜視図であり、図４（ｂ）は、図２（ｂ）に示すヨークを省略した正面図である。4A and 4B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 4A is an upper perspective view in which the yoke shown in FIG. 2A is omitted, and FIG. It is the front view which abbreviate | omitted the yoke shown in FIG.2 (b). 本発明の第１実施形態のレンズ駆動装置を説明する図であって、図５（ａ）は、レンズ保持部材の上方斜視図であり、図５（ｂ）は、図５（ａ）のレンズ保持部材にコイルが巻かれた状態を示す上方斜視図である。5A and 5B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 5A is an upper perspective view of a lens holding member, and FIG. 5B is a lens in FIG. It is an upper perspective view which shows the state by which the coil was wound by the holding member. 本発明の第１実施形態のレンズ駆動装置を説明する図であって、図６（ａ）は、レンズ保持部材の下方斜視図であり、図６（ｂ）は、図６（ａ）のレンズ保持部材にコイルが巻かれた状態を示す下方斜視図である。6A and 6B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 6A is a lower perspective view of a lens holding member, and FIG. 6B is a lens in FIG. It is a downward perspective view which shows the state by which the coil was wound by the holding member. 本発明の第１実施形態のレンズ駆動装置に係わるレンズ保持部材を説明する図であって、図７（ａ）は、図５（ａ）に示すＸ２側から見たレンズ保持部材の側面図であり、図７（ｂ）は、図７（ａ）に示すＲ部分の拡大側面図であり、図７（ｃ）は、図７（ｂ）を下方側から見た下方斜視図である。It is a figure explaining the lens holding member concerning the lens drive device of a 1st embodiment of the present invention, and Drawing 7 (a) is a side view of the lens holding member seen from the X2 side shown in Drawing 5 (a). FIG. 7B is an enlarged side view of an R portion shown in FIG. 7A, and FIG. 7C is a lower perspective view of FIG. 7B viewed from the lower side. 本発明の第１実施形態のレンズ駆動装置を説明する図であって、図８（ａ）は、図６（ａ）に示すレンズ保持部材をＸ２側から見た下方斜視図であり、図８（ｂ）は、図８（ａ）に示すレンズ保持部材にコイルが巻かれた状態を示す下方斜視図である。FIG. 8A is a diagram illustrating the lens driving device according to the first embodiment of the present invention, and FIG. 8A is a lower perspective view of the lens holding member shown in FIG. FIG. 9B is a lower perspective view illustrating a state where a coil is wound around the lens holding member illustrated in FIG. 本発明の第１実施形態のレンズ駆動装置に係わるレンズ保持部材を説明する図であって、図９（ａ）は、図８（ｂ）に示すＱ部分の拡大下方斜視図であり、図９（ｂ）は、図６（ｂ）に示すＰ部分の拡大下方斜視図である。FIG. 9A is a diagram illustrating a lens holding member according to the lens driving device of the first embodiment of the present invention, and FIG. 9A is an enlarged lower perspective view of a Q portion shown in FIG. (B) is the expansion downward perspective view of P section shown in Drawing 6 (b). 本発明の第１実施形態のレンズ駆動装置を説明する図であって、図１０（ａ）は、端子及びベース部材を省略した底面図であり、図１０（ｂ）は、図１０（ａ）に更に下側板ばね及びレンズ保持部材を省略した底面図である。FIGS. 10A and 10B are diagrams illustrating the lens driving device according to the first embodiment of the present invention, in which FIG. 10A is a bottom view in which a terminal and a base member are omitted, and FIG. Further, the bottom plate spring and the lens holding member are omitted from the bottom view. 本発明の第１実施形態に係わるレンズ駆動装置の板ばねを説明する図であって、図１１（ａ）は、上側板ばねの上面図であり、図１１（ｂ）は、下側板ばねの上面図である。It is a figure explaining the leaf | plate spring of the lens drive device concerning 1st Embodiment of this invention, Comprising: Fig.11 (a) is a top view of an upper leaf | plate spring, FIG.11 (b) is a lower leaf | plate spring. It is a top view. 本発明の第１実施形態のレンズ駆動装置における板ばねとコイルとの接続状態を説明する図であって、図１２（ａ）は、図１０（ａ）に示すＳ部分の拡大底面図であり、図１２（ｂ）は、図１０（ａ）に示すＳ部分をＸ２側から見た板ばね、コイル及びレンズ保持部材の拡大側面図である。It is a figure explaining the connection state of the leaf | plate spring and coil in the lens drive device of 1st Embodiment of this invention, Comprising: Fig.12 (a) is an enlarged bottom view of the S section shown to Fig.10 (a). FIG. 12B is an enlarged side view of the leaf spring, the coil, and the lens holding member when the portion S shown in FIG. 10A is viewed from the X2 side. 本発明の第１実施形態に係わるレンズ駆動装置の固定側部材を説明する図であって、図１３（ａ）は、ベース部材の上方斜視図であり、図１３（ｂ）は、ベース部材に下側板ばねを組み付けた上方斜視図である。FIGS. 13A and 13B are diagrams illustrating a fixed-side member of the lens driving device according to the first embodiment of the present invention. FIG. 13A is an upper perspective view of the base member, and FIG. It is an upper perspective view which assembled | attached the lower side leaf | plate spring. 本発明の第１実施形態に係わるレンズ駆動装置の変形例について説明する図であって、図１４（ａ）は、変形例１及び変形例２の模式図であり、図１４（ｂ）は、変形例３及び変形例４の模式図であり、図１４（ｃ）は、変形例５及び変形例６の模式図である。FIG. 14A is a diagram for explaining a modification of the lens driving device according to the first embodiment of the present invention, FIG. 14A is a schematic diagram of Modification 1 and Modification 2, and FIG. FIG. 14C is a schematic diagram of Modification 3 and Modification 4. FIG. 14C is a schematic diagram of Modification 5 and Modification 6. FIG. 本発明の第１実施形態に係わるレンズ駆動装置の変形例について説明する図であって、変形例７及び変形例８の模式図である。It is a figure explaining the modification of the lens drive device concerning 1st Embodiment of this invention, Comprising: It is a schematic diagram of the modification 7 and the modification 8. FIG. 従来例のレンズ駆動装置を説明する図であって、図１６（ａ）は、レンズ駆動装置を下方側から見た分解斜視図であり、図１６（ｂ）は、コイルの端部（第１コイルのコイル端部）と板ばね（像側バネ部材）との電気的な接続方法を説明する工程図である。FIG. 16A is an exploded perspective view of the lens driving device as viewed from the lower side, and FIG. 16B is an end portion of the coil (first portion). It is process drawing explaining the electrical connection method of a coil end part of a coil and a leaf | plate spring (image side spring member).
　以下、本発明の実施の形態について図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　［第１実施形態］
　図１は、本発明の第１実施形態のレンズ駆動装置１０１を説明する分解斜視図である。図２（ａ）は、レンズ駆動装置１０１の上方斜視図であり、図２（ｂ）は、図２（ａ）に示すＹ２側から見たレンズ駆動装置１０１の正面図である。図３（ａ）は、図２に示すＺ１側から見たレンズ駆動装置１０１の上面図であり、図３（ｂ）は、図２に示すＺ２側から見たレンズ駆動装置１０１の底面図である。図４（ａ）は、図２（ａ）に示すヨーク４を省略した上方斜視図であり、図４（ｂ）は、図２（ｂ）に示すヨーク４を省略した正面図である。 [First Embodiment]
FIG. 1 is an exploded perspective view illustrating the lens driving device 101 according to the first embodiment of the present invention. 2A is an upper perspective view of the lens driving device 101, and FIG. 2B is a front view of the lens driving device 101 viewed from the Y2 side shown in FIG. 2A. 3A is a top view of the lens driving device 101 viewed from the Z1 side shown in FIG. 2, and FIG. 3B is a bottom view of the lens driving device 101 viewed from the Z2 side shown in FIG. is there. 4A is an upper perspective view in which the yoke 4 shown in FIG. 2A is omitted, and FIG. 4B is a front view in which the yoke 4 shown in FIG. 2B is omitted.
　本発明の第１実施形態のレンズ駆動装置１０１は、図２及び図３に示すような直方体形状の外観を呈し、図１及び図４に示すように、図示していないレンズ体を保持可能なレンズ保持部材２と、レンズ保持部材２を光軸方向ＪＤ（図２に示すＺ方向）に沿って上下に移動させる駆動機構ＭＫと、レンズ保持部材２を光軸方向ＪＤに移動可能に支持する板ばね６と、板ばね６が固定される固定側部材ＲＧと、を備えて構成される。他に、本発明の第１実施形態のレンズ駆動装置１０１は、外部と電気的に接続するための端子７を有している。 The lens driving device 101 according to the first embodiment of the present invention has a rectangular parallelepiped shape as shown in FIGS. 2 and 3, and can hold a lens body (not shown) as shown in FIGS. The lens holding member 2, the drive mechanism MK that moves the lens holding member 2 up and down along the optical axis direction JD (Z direction shown in FIG. 2), and the lens holding member 2 are supported so as to be movable in the optical axis direction JD. A plate spring 6 and a fixed side member RG to which the plate spring 6 is fixed are configured. In addition, the lens driving device 101 according to the first embodiment of the present invention has a terminal 7 for electrical connection with the outside.
　また、本発明の第１実施形態のレンズ駆動装置１０１では、駆動機構ＭＫは、図１に示すように、８角形の環状に巻かれたコイル３と、矩形状で箱状の外側ケースを兼ねたヨーク４と、コイル３の四辺と対向して配設された４つの磁石５と、を備えて構成される。また、板ばね６は、図１に示すように、レンズ保持部材２とヨーク４との間に配設される上側板ばね１６と、レンズ保持部材２とベース部材１８との間に配設される２つの下側板ばね（２６Ａ、２６Ｂ）と、から構成されている。また、固定側部材ＲＧは、図１に示す端子７が埋め込まれたベース部材１８から主に構成されている。 Further, in the lens driving device 101 according to the first embodiment of the present invention, as shown in FIG. 1, the driving mechanism MK also serves as an octagonal annular coil 3 and a rectangular box-like outer case. The yoke 4 and four magnets 5 disposed to face the four sides of the coil 3 are provided. Further, as shown in FIG. 1, the leaf spring 6 is disposed between the upper leaf spring 16 disposed between the lens holding member 2 and the yoke 4, and between the lens retaining member 2 and the base member 18. And two lower leaf springs (26A, 26B). The fixed member RG is mainly composed of a base member 18 in which the terminals 7 shown in FIG. 1 are embedded.
　このレンズ駆動装置１０１は、レンズが保持されたレンズ体（図示していない）がレンズ保持部材２に固定されて、図示していない撮像素子を実装した基板上に取り付けられる。そして、レンズ駆動装置１０１は、基板からの電源よりコイル３に通電されて、駆動機構ＭＫで生じる電磁力により、撮像素子の上方に配置されるレンズ保持部材２をレンズの光軸方向ＪＤ（図２に示すＺ方向）に沿って移動させるものである。つまり、レンズ駆動装置１０１は、撮像素子に対して、レンズ体のレンズを離れる方向に移動させてマクロ撮影を可能にし、レンズ体のレンズを近づける方向に移動させて無限遠撮影を可能にしている。なお、光軸方向ＪＤは、筒状をしているレンズ体（レンズバレル）の中心軸線方向に沿ったものとなっている。 The lens driving device 101 is mounted on a substrate on which an imaging element (not shown) is mounted, with a lens body (not shown) holding a lens fixed to the lens holding member 2. Then, the lens driving device 101 is energized to the coil 3 from the power supply from the substrate, and the lens holding member 2 disposed above the image pickup device is moved in the optical axis direction JD of the lens by the electromagnetic force generated by the driving mechanism MK (FIG. (Z direction shown in FIG. 2). In other words, the lens driving device 101 moves the lens of the lens body in the direction away from the imaging element to enable macro shooting, and moves the lens of the lens body in the direction of approaching to enable shooting at infinity. . The optical axis direction JD is along the central axis direction of the cylindrical lens body (lens barrel).
　次に、レンズ駆動装置１０１の各構成部材に関して、図面を用いて詳細に説明する。先ず、レンズ保持部材２と駆動機構ＭＫについて説明する。図５（ａ）は、レンズ保持部材２の上方斜視図であり、図５（ｂ）は、図５（ａ）のレンズ保持部材２にコイル３が巻かれた状態を示す上方斜視図である。図６（ａ）は、レンズ保持部材２の下方斜視図であり、図６（ｂ）は、図６（ａ）のレンズ保持部材２にコイル３が巻かれた状態を示す下方斜視図である。図７（ａ）は、図５（ａ）に示すＸ２側から見たレンズ保持部材２の側面図であり、図７（ｂ）は、図７（ａ）に示すＲ部分の拡大側面図であり、図７（ｃ）は、図７（ｂ）を下方側から見た下方斜視図である。図８（ａ）は、図６（ａ）に示すレンズ保持部材２をＸ２側から見た下方斜視図であり、図８（ｂ）は、図８（ａ）に示すレンズ保持部材２にコイル３が巻かれた状態を示す下方斜視図である。図９（ａ）は、図８（ｂ）に示すＱ部分の拡大下方斜視図であり、図９（ｂ）は、図６（ｂ）に示すＰ部分の拡大下方斜視図である。図１０（ａ）は、端子７（後述する接続部材５７も含む）及びベース部材１８を省略した底面図であり、図１０（ｂ）は、図１０（ａ）に更に下側板ばね２６Ａ、下側板ばね２６Ｂ及びレンズ保持部材２を省略した底面図である。 Next, each component of the lens driving device 101 will be described in detail with reference to the drawings. First, the lens holding member 2 and the drive mechanism MK will be described. FIG. 5A is an upper perspective view of the lens holding member 2, and FIG. 5B is an upper perspective view showing a state in which the coil 3 is wound around the lens holding member 2 of FIG. 5A. . 6A is a lower perspective view of the lens holding member 2, and FIG. 6B is a lower perspective view showing a state where the coil 3 is wound around the lens holding member 2 of FIG. 6A. . 7A is a side view of the lens holding member 2 viewed from the X2 side shown in FIG. 5A, and FIG. 7B is an enlarged side view of the R portion shown in FIG. 7A. FIG. 7C is a lower perspective view of FIG. 7B viewed from the lower side. FIG. 8A is a lower perspective view of the lens holding member 2 shown in FIG. 6A as viewed from the X2 side, and FIG. 8B shows a coil formed on the lens holding member 2 shown in FIG. It is a downward perspective view which shows the state in which 3 was wound. FIG. 9A is an enlarged lower perspective view of the Q portion shown in FIG. 8B, and FIG. 9B is an enlarged lower perspective view of the P portion shown in FIG. 6B. FIG. 10A is a bottom view in which the terminal 7 (including a connecting member 57 described later) and the base member 18 are omitted, and FIG. 10B is a lower leaf spring 26 </ b> A in FIG. It is the bottom view which omitted side leaf spring 26B and lens holding member 2.
　先ず、レンズ駆動装置１０１のレンズ保持部材２について説明する。レンズ保持部材２は、液晶ポリマー（ＬＣＰ、Liquid Crystal Polymer）等の合成樹脂を用いて射出成形して作製されており、図５及び図６に示すように、筒状に形成されており、円形で内周面と外周面を有した筒部１２と、光軸方向ＪＤにおける一端部側である下部側（図７（ａ）に示すＺ２方向側）に形成された鍔状部５２と、から主に構成されている。 First, the lens holding member 2 of the lens driving device 101 will be described. The lens holding member 2 is manufactured by injection molding using a synthetic resin such as a liquid crystal polymer (LCP, Liquid Crystal), and is formed in a cylindrical shape as shown in FIGS. And a cylindrical portion 12 having an inner peripheral surface and an outer peripheral surface, and a flange-shaped portion 52 formed on the lower side (the Z2 direction side shown in FIG. 7A) which is one end side in the optical axis direction JD. It is mainly composed.
　先ず、レンズ保持部材２の筒部１２は、図５に示すように、内周面にねじ溝が設けられており、図示していないレンズ体が係合されて装着される。また、筒部１２には、その上部に位置する他端部側（図５に示すＺ１方向側である上端側）に２つの凹状の窪みを有した台座部１２ｄが対向して２ヶ所に設けられている（図５に示すＸ方向の２箇所）。この台座部１２ｄには、図４（ａ）に示すように、上側板ばね１６の内側部分（具体的には後述する第１部分１６ａ）が載置される。 First, as shown in FIG. 5, the cylindrical portion 12 of the lens holding member 2 is provided with a thread groove on the inner peripheral surface, and a lens body (not shown) is engaged and attached. Further, the cylindrical portion 12 is provided with two pedestal portions 12d having two concave depressions on the other end side (the upper end side which is the Z1 direction side shown in FIG. 5) located at the upper portion thereof. (Two locations in the X direction shown in FIG. 5). As shown in FIG. 4A, an inner portion of the upper leaf spring 16 (specifically, a first portion 16a described later) is placed on the pedestal portion 12d.
　また、筒部１２の外周面には、図５に示すように、コイル３を内側から支持するコイル支持部１２ｊが四方に均等に４箇所設けられている。また、このコイル支持部１２ｊの上端側には、図５に示すように、鍔状部５２と対向して径方向外側に突出した庇部１２ｈ（図７（ａ）を参照）が４箇所形成されている。そして、図５（ｂ）に示すように、コイル３（具体的には、後述する巻回部１３）がコイル支持部１２ｊに支持され庇部１２ｈ及び鍔状部５２に挟まれるようにして、レンズ保持部材２の外周面側に８角形状で巻かれている。 Further, as shown in FIG. 5, four coil support portions 12j for supporting the coil 3 from the inside are provided on the outer peripheral surface of the cylindrical portion 12 equally in four directions. In addition, on the upper end side of the coil support portion 12j, as shown in FIG. 5, four hook portions 12h (see FIG. 7A) are formed so as to face the hook-like portion 52 and protrude radially outward. Has been. And as shown in FIG.5 (b), the coil 3 (specifically winding part 13 mentioned later) is supported by the coil support part 12j, and is pinched | interposed into the collar part 12h and the collar-shaped part 52, The lens holding member 2 is wound in an octagonal shape on the outer peripheral surface side.
　次に、レンズ保持部材２の鍔状部５２は、筒部１２の下部に位置する一端部側（図６に示すＺ２方向側である下端側）における外周（外周面）から径方向外側に突出して形成されている。そして、前述したように、鍔状部５２の一面側（上面側）にコイル３が配設されている。 Next, the hook-like portion 52 of the lens holding member 2 protrudes radially outward from the outer periphery (outer peripheral surface) on one end side (the lower end side that is the Z2 direction side shown in FIG. 6) located at the lower portion of the cylindrical portion 12. Is formed. As described above, the coil 3 is disposed on one surface side (upper surface side) of the bowl-shaped portion 52.
　鍔状部５２には、図５及び図６に示すように、鍔状部５２の一面側（図５に示すＺ１方向側）と他面側（図５に示すＺ２方向側）を貫通して切り欠かれた切欠部５２ｋが対向して２箇所形成されている。この切欠部５２ｋには、図６（ｂ）及び図８（ｂ）に示すように、コイル３の巻始め側と巻終わり側の部分（具体的には、後述する延在部３３の挿通部３３ｋ）が挿通されている。 As shown in FIGS. 5 and 6, the hook-shaped portion 52 passes through one surface side (Z1 direction side shown in FIG. 5) and the other surface side (Z2 direction side shown in FIG. 5). Two notched portions 52k are formed to face each other. As shown in FIGS. 6B and 8B, the notch 52k includes portions on the winding start side and the winding end side of the coil 3 (specifically, insertion portions of an extension portion 33 described later). 33k) is inserted.
　また、鍔状部５２には、図７及び図８に示すように、切欠部５２ｋの一部を塞ぐように形成された弾性変形部６２が設けられており、本発明の第１実施形態では、鍔状部５２と一体で形成されている。これにより、レンズ保持部材２を射出成形で形成する際に、別部品を用いることなく弾性変形部６２を同時に形成できるので、容易に弾性変形部６２を作製することができる。 Moreover, as shown in FIG.7 and FIG.8, the hook-shaped part 52 is provided with the elastic deformation part 62 formed so that a part of notch part 52k may be plugged up, and in 1st Embodiment of this invention, it is. , Formed integrally with the bowl-shaped portion 52. Thereby, when forming the lens holding member 2 by injection molding, since the elastic deformation part 62 can be formed simultaneously without using another component, the elastic deformation part 62 can be produced easily.
　弾性変形部６２は、図７（ｂ）及び図７（ｃ）に示すように、鍔状部５２よりも肉薄に形成された薄肉部６２ｑと、鍔状部５２に向かうにしたがって肉厚寸法が厚くなる連結部６２ｒと、から構成されており、この連結部６２ｒが隣接し互いに交差する二辺に位置するように設けられて、薄肉部６２ｑの二辺と繋がっているとともに、鍔状部５２に繋がっている。これにより、肉薄に形成された薄肉部６２ｑを確実に支えることができる。 As shown in FIGS. 7 (b) and 7 (c), the elastic deformation portion 62 has a thin wall portion 62 q formed thinner than the hook-shaped portion 52 and a wall thickness dimension toward the hook-shaped portion 52. The connecting portion 62r is formed to be thick, and the connecting portion 62r is provided so as to be positioned on two sides that are adjacent and intersect each other, and is connected to the two sides of the thin-walled portion 62q. It is connected to. Thereby, the thin part 62q formed thinly can be supported reliably.
　鍔状部５２の他面側（下面側）には、図６及び図８に示すように、その他面（下面）から光軸方向ＪＤ（下方向）に突出した、角形凸状の２つの保持部（突出部）７２と、丸形凸状の６つの突設部２ｔと、三方の壁部（内側壁部８２ｕ、外側壁部８２ｖ、側壁部８２ｗ）で形成された突堤部８２と、が設けられている。 On the other surface side (lower surface side) of the hook-shaped portion 52, as shown in FIGS. 6 and 8, two rectangular convex holdings projecting from the other surface (lower surface) in the optical axis direction JD (downward). Part (projection part) 72, six projecting parts 2t having a round convex shape, and a jetty part 82 formed by three side wall parts (inner side wall part 82u, outer side wall part 82v, side wall part 82w), Is provided.
　保持部７２は、図６（ｂ）及び図８（ｂ）に示すように、コイル３の巻始め及び巻終わりに対応して、２つ設けられており、保持部７２には、コイル３（延在部３３）の両端側の一部が絡げられて保持されている（図９を参照）。なお、説明を分かり易くするため、図１０（ｂ）に示すように、コイル３の巻き始め側でコイル３の一部を保持している保持部７２を保持部７２Ａとし、コイル３の巻き終わり側でコイル３の一部を保持している保持部７２を保持部７２Ｂとして、以下説明する。 As shown in FIGS. 6B and 8B, two holding portions 72 are provided corresponding to the start and end of winding of the coil 3, and the holding portion 72 includes the coil 3 ( Part of both ends of the extending portion 33) is held by being entangled (see FIG. 9). For ease of explanation, as shown in FIG. 10B, the holding portion 72 that holds a part of the coil 3 on the winding start side of the coil 3 is a holding portion 72A, and the winding end of the coil 3 is completed. Hereinafter, the holding unit 72 holding a part of the coil 3 on the side will be described as a holding unit 72B.
　突設部２ｔは、図１０（ａ）に示すように、下側板ばね２６Ａ及び下側板ばね２６Ｂのそれぞれに対応して、各々３つ設けられており、突設部２ｔには、下側板ばね２６Ａ及び下側板ばね２６Ｂの内側部分（具体的には後述する第３部分２６ｃ）が装着されて固定されている。なお、下側板ばね２６Ａ及び下側板ばね２６Ｂの内側部分の固定は突設部２ｔを熱かしめすることによって行われているので、図６ないし図９及び図１０（ａ）では、突設部２ｔは、熱かしめされた後の先端が変形した状態で図示されている。 As shown in FIG. 10A, three protruding portions 2t are provided corresponding to each of the lower leaf spring 26A and the lower leaf spring 26B. The protruding portion 2t includes a lower leaf spring. The inner portions of 26A and the lower leaf spring 26B (specifically, a third portion 26c described later) are mounted and fixed. The inner portions of the lower leaf spring 26A and the lower leaf spring 26B are fixed by heat caulking the protruding portion 2t. Therefore, in FIGS. 6 to 9 and 10A, the protruding portion 2t is fixed. Is shown in a state where the tip after heat caulking is deformed.
　突堤部８２は、板ばね６（下側板ばね２６Ａ、下側板ばね２６Ｂ）の内側部分と光軸方向ＪＤにおいて離間して対向する対向部に設けられており（後述する図１２を参照）、図９に示すように、レンズ保持部材２の中心側に位置する内側壁部８２ｕと、内側壁部８２ｕと対向して外側に位置する外側壁部８２ｖと、保持部７２が設けられた一方側で内側壁部８２ｕと外側壁部８２ｖとの間に位置する側壁部８２ｗと、から構成されている。また、突堤部８２の保持部７２と離間した他方側は、壁部が切り欠かれた開放部８２ｚとなっている。そして、三方の壁部（内側壁部８２ｕ、外側壁部８２ｖ、側壁部８２ｗ）で囲われた空間が収容部８２ｓとなっている。なお、本発明の第１実施形態では、突堤部８２が保持部７２と隣り合う位置に形成されているので、保持部７２の側壁を突堤部８２の側壁部８２ｗとして好適に利用している。従って、保持部７２と隣り合う位置に、突堤部８２で形成された収容部８２ｓが隣接された状態で設けられている。 The jetty portion 82 is provided in a facing portion that faces the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B) while being spaced apart from each other in the optical axis direction JD (see FIG. 12 described later). As shown in FIG. 9, the inner wall 82u located on the center side of the lens holding member 2, the outer wall 82v located on the outer side facing the inner wall 82u, and the holding portion 72 on one side. It is comprised from the side wall part 82w located between the inner wall part 82u and the outer side wall part 82v. In addition, the other side of the jetty 82 that is separated from the holding portion 72 is an open portion 82z in which a wall portion is cut out. A space surrounded by the three wall portions (the inner wall portion 82u, the outer wall portion 82v, and the side wall portion 82w) serves as the accommodating portion 82s. In the first embodiment of the present invention, since the jetty portion 82 is formed at a position adjacent to the holding portion 72, the side wall of the holding portion 72 is preferably used as the side wall portion 82 w of the jetty portion 82. Therefore, the accommodating portion 82s formed by the jetty portion 82 is provided adjacent to the holding portion 72 at a position adjacent thereto.
　次に、レンズ駆動装置１０１の駆動機構ＭＫについて説明する。駆動機構ＭＫは、図１０（ｂ）に示すように、８角形の角度を有して環状に巻かれたコイル３と、外側ケースを兼ねた矩形状で箱状のヨーク４と、コイル３の四辺と対向して配設された４つの磁石５と、を備えて構成される。そして、駆動機構ＭＫは、コイル３に流れる電流と磁石５から発生する磁界とで駆動力（推力）を発生させ、レンズ保持部材２を光軸方向ＪＤに沿って上下に移動させている。 Next, the driving mechanism MK of the lens driving device 101 will be described. As shown in FIG. 10B, the drive mechanism MK includes an coil 3 wound in an annular shape having an octagonal angle, a rectangular box-shaped yoke 4 also serving as an outer case, And four magnets 5 arranged to face the four sides. The driving mechanism MK generates a driving force (thrust) by the current flowing through the coil 3 and the magnetic field generated from the magnet 5, and moves the lens holding member 2 up and down along the optical axis direction JD.
　先ず、駆動機構ＭＫのコイル３について説明する。コイル３は、図５（ｂ）に示すように、レンズ保持部材２の光軸方向ＪＤ（図２に示すＺ方向）における一端部（下端部）と他端部（上端部）との間の外周に導電性の線材を巻回して形成されており、図１に示すように、８角形の角度を有して巻かれて形成された巻回部１３と、巻回部１３の両側の端部に繋がる延在部３３と、を有して構成されている。なお、図１及び図５（ｂ）に代表されるコイル３では、導電性の線材は絶縁部材で表面を被覆していることもあり、巻回部１３における導電性の線材の詳細な巻回状態を省略して示している。 First, the coil 3 of the drive mechanism MK will be described. As shown in FIG. 5B, the coil 3 is formed between one end (lower end) and the other end (upper end) in the optical axis direction JD (Z direction shown in FIG. 2) of the lens holding member 2. A conductive wire is wound around the outer periphery, and as shown in FIG. 1, a wound portion 13 formed by being wound with an octagonal angle and ends on both sides of the wound portion 13. And an extending portion 33 connected to the portion. In the coil 3 represented by FIG. 1 and FIG. 5B, the surface of the conductive wire may be covered with an insulating member, and the detailed winding of the conductive wire in the winding portion 13 is possible. The state is omitted.
　次に、コイル３の各構成要素について、レンズ保持部材２にコイル３の線材を巻回する方法を交えながら、詳細に説明する。なお、説明を分かり易くするため、図１０（ｂ）に示すように、コイル３の巻き始め側で巻回部１３の内周側に位置する巻回部１３の端部に繋がっている延在部３３を延在部３３Ａとし、コイル３の巻き終わり側で巻回部１３の外周側に位置する巻回部１３の端部に繋がっている延在部３３を延在部３３Ｂとして、以下説明する。 Next, each component of the coil 3 will be described in detail while using a method for winding the wire of the coil 3 around the lens holding member 2. For easy understanding, as shown in FIG. 10 (b), an extension connected to the end of the winding part 13 located on the inner peripheral side of the winding part 13 on the winding start side of the coil 3. The portion 33 is defined as an extending portion 33A, and the extending portion 33 connected to the end of the winding portion 13 located on the outer peripheral side of the winding portion 13 on the winding end side of the coil 3 is defined as an extending portion 33B. To do.
　先ず、コイル３の延在部３３（３３Ａ、３３Ｂ）は、図９に示すように、保持部（突出部）７２（７２Ａ、７２Ｂ）に巻き付けられる巻き付け部３３ｍと、収容部８２ｓの内底面（対向部）と対向して延在している接続部３３ｃと、切欠部５２ｋに挿通されて鍔状部５２の一面側と他面側に延在している挿通部３３ｋと、を有して構成されている。 First, as shown in FIG. 9, the extending portion 33 (33A, 33B) of the coil 3 includes a winding portion 33m wound around a holding portion (protruding portion) 72 (72A, 72B), and an inner bottom surface ( A connecting portion 33c extending opposite to the opposing portion), and an insertion portion 33k that is inserted through the notch 52k and extends to one surface side and the other surface side of the bowl-shaped portion 52. It is configured.
　そして、先ずコイル３の線材を巻き始める際には、コイル３の延在部３３Ａをレンズ保持部材２の保持部７２Ａに絡げるようにする。図９（ａ）に示す例では、コイル３の線材の一部が保持部７２Ａに３ターン巻き付けられている。これにより、巻き付け部３３ｍが保持部７２Ａに形成され、延在部３３Ａの一部が保持部７２Ａに保持されることとなる。 First, when winding the wire of the coil 3, the extending portion 33 </ b> A of the coil 3 is entangled with the holding portion 72 </ b> A of the lens holding member 2. In the example shown in FIG. 9A, a part of the wire of the coil 3 is wound around the holding portion 72A for 3 turns. Thereby, the winding part 33m is formed in the holding part 72A, and a part of the extending part 33A is held by the holding part 72A.
　次に、線材を絡げた巻き付け部３３ｍから線材を引き出して、レンズ保持部材２の外周に線材を巻回する。その際には、図９（ａ）に示すように、巻き付け部３３ｍから引き出された線材が、収容部８２ｓの内底面（対向部）と対向するとともに、壁部が切り欠かれた開放部８２ｚに挿通される。更に、線材は、鍔状部５２の他面側から鍔状部５２の切欠部５２ｋを介して鍔状部５２の一面側（コイル３の巻回部１３側）に延在している。これにより、突堤部８２（対向部）及び収容部８２ｓの内底面（対向部）と対向する部分が延在部３３Ａの接続部３３ｃとなっており、切欠部５２ｋに挿通される部分が延在部３３Ａの挿通部３３ｋとなっている。 Next, the wire is drawn out from the winding portion 33m around which the wire is wound, and the wire is wound around the outer periphery of the lens holding member 2. At this time, as shown in FIG. 9A, the wire drawn out from the winding portion 33m faces the inner bottom surface (opposing portion) of the accommodating portion 82s, and the open portion 82z in which the wall portion is cut out. Is inserted. Furthermore, the wire extends from the other surface side of the hook-shaped portion 52 to one surface side (the winding portion 13 side of the coil 3) of the hook-shaped portion 52 via the notch 52k of the hook-shaped portion 52. Thereby, the part facing the inner bottom face (opposing part) of the jetty part 82 (opposing part) and the accommodating part 82s is the connecting part 33c of the extending part 33A, and the part inserted through the notch part 52k is extended. It is the insertion part 33k of the part 33A.
　また、延在部３３Ａの挿通部３３ｋは、コイル３の巻回部１３側に延在する際に、図９（ａ）に示すように、レンズ保持部材２の弾性変形部６２に当接して構成されている。これにより、落下等により強い衝撃がレンズ駆動装置１０１に加えられた際には、コイル３の延在部３３Ａがレンズ保持部材２の弾性変形部６２に押し付けられるようになる。このため、この弾性変形部６２が、弾性変形して延在部３３Ａにかかる衝撃を吸収することとなる。このことにより、延在部３３Ａが切欠部５２ｋのエッジで切断され難いものとすることができ、コイル３が断線し難いレンズ駆動装置１０１を提供することができる。 Further, when the insertion portion 33k of the extension portion 33A extends toward the winding portion 13 of the coil 3, as shown in FIG. 9A, the insertion portion 33k contacts the elastic deformation portion 62 of the lens holding member 2. It is configured. Accordingly, when a strong impact is applied to the lens driving device 101 due to dropping or the like, the extending portion 33 </ b> A of the coil 3 is pressed against the elastic deformation portion 62 of the lens holding member 2. For this reason, this elastic deformation part 62 will elastically deform and will absorb the impact concerning extension part 33A. Accordingly, it is possible to provide the lens driving device 101 in which the extending portion 33A is difficult to be cut at the edge of the notch 52k, and the coil 3 is difficult to be disconnected.
　更に、本発明の第１実施形態では、弾性変形部６２に当接して設けられた延在部３３Ａが巻回部１３の内周側に位置する巻回部１３の端部に繋がっているので、巻回部１３の外周側に位置する他方の延在部３３Ｂ（コイル３の巻終わり側に繋がっている延在部３３Ｂ）の場合と比較して、切欠部５２ｋのエッジ部分での屈曲角度が狭くなっている。このため、コイル３の巻き始め側の延在部３３Ａと切欠部５２ｋのエッジ部分とが当接する力がより強くなるので、この部分に弾性変形部６２を設けることで、切欠部５２ｋのエッジ部分から延在部３３Ａに力が加わるのをより効果的に緩和することができる。このことにより、落下等で強い衝撃がレンズ駆動装置１０１に加わった場合でも、延在部３３Ａが切欠部５２ｋのエッジでより切断され難いものとすることができる。 Furthermore, in the first embodiment of the present invention, the extending portion 33 </ b> A provided in contact with the elastic deformation portion 62 is connected to the end of the winding portion 13 located on the inner peripheral side of the winding portion 13. The bending angle at the edge portion of the cutout portion 52k as compared with the other extension portion 33B (extension portion 33B connected to the winding end side of the coil 3) located on the outer peripheral side of the winding portion 13 Is narrower. For this reason, since the force of contact between the extending portion 33A on the winding start side of the coil 3 and the edge portion of the cutout portion 52k becomes stronger, by providing the elastic deformation portion 62 in this portion, the edge portion of the cutout portion 52k It is possible to more effectively alleviate the force applied to the extending portion 33A. Thus, even when a strong impact is applied to the lens driving device 101 due to dropping or the like, the extending portion 33A can be more difficult to be cut at the edge of the notch 52k.
　また、前述したように、弾性変形部６２の薄肉部６２ｑが、図９（ａ）に示すように、隣接して互いに交差する二辺の位置に形成された連結部６２ｒで、鍔状部５２に繋がっているので、落下等により強い衝撃がレンズ駆動装置１０１に加えられて、コイル３の延在部３３Ａが弾性変形部６２に強く押し付けられたとしても、この薄肉部６２ｑを二辺（連結部６２ｒ）で支えて衝撃を受けることができる。このことにより、弾性変形部６２の薄肉部６２ｑが鍔状部５２から破断して脱落するのを防止することができる。特に、本発明の第１実施形態では、薄肉部６２ｑを鍔状部５２側に向かうにしたがって肉厚寸法が厚く変化している連結部６２ｒで鍔状部５２に繋げているので、肉厚の寸法を急激に変化させた形態に比べて、強い衝撃が加えられた場合に、薄肉部６２ｑの根本に加えられる応力が分散され、薄肉部６２ｑがより破断しにくくなっている。 Further, as described above, the thin-walled portion 62q of the elastically deformable portion 62 is a connecting portion 62r formed at two positions adjacent to each other as shown in FIG. Therefore, even if a strong impact is applied to the lens driving device 101 due to dropping or the like, and the extension portion 33A of the coil 3 is strongly pressed against the elastic deformation portion 62, the thin portion 62q is connected to two sides (connections). It can be supported by the part 62r) and receive an impact. Thereby, it is possible to prevent the thin-walled portion 62q of the elastically deformable portion 62 from breaking and falling off from the bowl-shaped portion 52. In particular, in the first embodiment of the present invention, the thin wall portion 62q is connected to the hook-shaped portion 52 by the connecting portion 62r whose thickness dimension is increased as it goes toward the hook-shaped portion 52 side. Compared with the form in which the dimensions are changed rapidly, when a strong impact is applied, the stress applied to the base of the thin portion 62q is dispersed, and the thin portion 62q is more difficult to break.
　次に、レンズ保持部材２の外周に巻回されたコイル３の巻回部１３は、図５（ｂ）に示すように、レンズ保持部材２の筒部１２の周囲を囲む位置に配設され、コイル支持部１２ｊ（図５（ａ）を参照）により内側から支持された状態で、コイル３の一部が庇部１２ｈと鍔状部５２に挟まれるようにして、鍔状部５２の一面側（上面側）に固定されている。そして、コイル３の巻回部１３の内周面がコイル支持部１２ｊにより等方的にバランス良く支持されるため、コイル３の中心軸とレンズ保持部材２の中心軸とが一致した状態でレンズ保持部材２に保持される。これにより、レンズ保持部材２に保持されたレンズ体のレンズの光軸とレンズ保持部材２の中心軸とを容易に一致させ易くなる。 Next, the winding portion 13 of the coil 3 wound around the outer periphery of the lens holding member 2 is disposed at a position surrounding the cylindrical portion 12 of the lens holding member 2 as shown in FIG. One surface of the bowl-shaped part 52 so that a part of the coil 3 is sandwiched between the collar part 12h and the bowl-shaped part 52 while being supported from the inside by the coil support part 12j (see FIG. 5A). It is fixed to the side (upper surface side). And since the inner peripheral surface of the winding part 13 of the coil 3 is supported in an isotropically balanced manner by the coil support part 12j, the lens in a state where the central axis of the coil 3 and the central axis of the lens holding member 2 coincide with each other. It is held by the holding member 2. Thereby, the optical axis of the lens of the lens body held by the lens holding member 2 and the central axis of the lens holding member 2 can be easily matched.
　最後に、レンズ保持部材２の外周への線材の巻回が終了したら、コイル３の線材（巻回部１３の巻き終わり側の端部に繋がる延在部３３Ｂ）は、図９（ｂ）に示すように、鍔状部５２の一面側から鍔状部５２の切欠部５２ｋを介して鍔状部５２の他面側に引き出される。そして、延在部３３Ｂ（線材）は、突堤部８２の開放部８２ｚに挿通されるとともに、収容部８２ｓの内底面（対向部）と対向して延在され、レンズ保持部材２の保持部７２Ｂに絡げられる。図９（ｂ）に示す例では、保持部７２Ｂに３ターン巻き付けられている。これにより、切欠部５２ｋに挿通される部分が延在部３３Ｂの挿通部３３ｋとなっており、突堤部８２（対向部）及び収容部８２ｓの内底面（対向部）と対向する部分が延在部３３Ｂの接続部３３ｃとなっている。また、巻き付け部３３ｍが保持部７２Ｂに形成され、延在部３３Ｂの一部が保持部７２Ｂに保持されることとなる。 Finally, when the winding of the wire rod around the outer periphery of the lens holding member 2 is completed, the wire rod of the coil 3 (extending portion 33B connected to the end portion on the winding end side of the winding portion 13) is shown in FIG. As shown, it is pulled out from the one surface side of the hook-shaped portion 52 to the other surface side of the hook-shaped portion 52 through the notch 52 k of the hook-shaped portion 52. The extending portion 33B (wire) is inserted into the open portion 82z of the jetty portion 82, and is extended to face the inner bottom surface (opposing portion) of the accommodating portion 82s, and the holding portion 72B of the lens holding member 2 is extended. Entangled in In the example shown in FIG. 9B, the holding portion 72B is wound three turns. Thereby, the part inserted into the notch 52k is the insertion part 33k of the extension part 33B, and the part facing the jetty part 82 (opposing part) and the inner bottom surface (opposing part) of the accommodating part 82s extends. It becomes the connection part 33c of the part 33B. Further, the winding portion 33m is formed in the holding portion 72B, and a part of the extending portion 33B is held in the holding portion 72B.
　以上のように構成されたレンズ保持部材２とコイル３において、保持部７２（７２Ａ、７２Ｂ）と離間した他方側に、突堤部８２の壁部が切り欠かれた開放部８２ｚが形成されており、この開放部８２ｚにコイル３の延在部３３（接続部３３ｃ）を挿通させている。このため、突堤部８２で囲まれた収容部８２ｓを設けていても、突堤部８２と延在部３３とが干渉することを回避することができ、レンズ保持部材２の対向部と板ばね６の内側部分との間隔を狭く保つことができる。このことにより、レンズ駆動装置１０１が光軸方向ＪＤに大きくなるのを抑制することができる。 In the lens holding member 2 and the coil 3 configured as described above, an open portion 82z in which the wall portion of the jetty portion 82 is notched is formed on the other side separated from the holding portion 72 (72A, 72B). The extending portion 33 (connecting portion 33c) of the coil 3 is inserted through the open portion 82z. For this reason, even if the accommodating part 82s surrounded by the jetty part 82 is provided, it can be avoided that the jetty part 82 and the extending part 33 interfere with each other, and the opposing part of the lens holding member 2 and the leaf spring 6 can be avoided. The distance from the inner part of the can be kept narrow. This can prevent the lens driving device 101 from increasing in the optical axis direction JD.
　次に、駆動機構ＭＫのヨーク４について説明する。ヨーク４は、鉄等の軟磁性体材料の板材に抜き加工や絞り加工を施して作製しており、図１に示すように、外形が収納部４ｓを有した箱状に形成されている。そして、ヨーク４は、矩形状の環状で外側に形成された外ヨーク４Ａと、外ヨーク４Ａの上端（図１に示すＺ１側）と連続して設けられた平板状の上面部４Ｂと、上面部４Ｂの一部から下方（図１に示すＺ２方向）に延設された４つの内ヨーク４Ｃと、を有して構成されている。また、内ヨーク４Ｃが形成された四隅には、上面部４Ｂより下方に位置する段差部４Ｄが設けられている。このように構成されたヨーク４は、図１０（ｂ）に示すように、コイル３及び磁石５を収納部４ｓに収容し、図２に示すように、ベース部材１８に係合されて、ベース部材１８とともに外形を構成している。 Next, the yoke 4 of the drive mechanism MK will be described. The yoke 4 is produced by subjecting a plate of soft magnetic material such as iron to punching or drawing, and as shown in FIG. 1, the outer shape is formed in a box shape having a storage portion 4s. The yoke 4 has a rectangular annular outer yoke 4A formed on the outside, a flat upper surface portion 4B provided continuously with the upper end (Z1 side shown in FIG. 1) of the outer yoke 4A, and an upper surface. And four inner yokes 4C extending downward (Z2 direction shown in FIG. 1) from a part of the portion 4B. Further, step portions 4D positioned below the upper surface portion 4B are provided at the four corners where the inner yoke 4C is formed. The yoke 4 configured as described above accommodates the coil 3 and the magnet 5 in the accommodating portion 4s as shown in FIG. 10B, and is engaged with the base member 18 as shown in FIG. The outer shape is formed together with the member 18.
　ヨーク４の内ヨーク４Ｃは、図３（ａ）及び図１０（ｂ）に示すように、平面視して、円弧状に形成され、外ヨーク４Ａの４つの角部に対向するように、等間隔で配設されている。また、詳細な図示はしていないが、レンズ駆動装置１０１が組み立てられた際には、内ヨーク４Ｃのそれぞれは、レンズ保持部材２の筒部１２の外周に沿って配設されるとともに、コイル３の内周面と対向して配設される。更に、内ヨーク４Ｃのそれぞれは、図１０（ｂ）に示すように、コイル３を挟んで、磁石５のそれぞれと対向する位置に配設されている。なお、ヨーク４を絞り加工で作製する際には、ヨーク４の内ヨーク４Ｃが円弧状であるので、容易に絞り加工を行うことができる。このため、ヨーク４の内ヨーク４Ｃの形状及び配設の位置の精度を高めることができる。 As shown in FIGS. 3 (a) and 10 (b), the inner yoke 4C of the yoke 4 is formed in an arc shape in plan view so as to face the four corners of the outer yoke 4A, etc. They are arranged at intervals. Although not shown in detail, when the lens driving device 101 is assembled, each of the inner yokes 4C is disposed along the outer periphery of the cylindrical portion 12 of the lens holding member 2, and the coil 3 is disposed so as to face the inner peripheral surface. Further, each of the inner yokes 4C is disposed at a position facing each of the magnets 5 with the coil 3 interposed therebetween, as shown in FIG. When the yoke 4 is manufactured by drawing, the inner yoke 4C of the yoke 4 has an arc shape, so that drawing can be easily performed. For this reason, the precision of the shape of the inner yoke 4C of the yoke 4 and the position of arrangement | positioning can be improved.
　最後に、駆動機構ＭＫの磁石５について説明する。磁石５は、図１に示すように、横断面形状が台形形状で、平板状の外形をしており、４つの磁石５が、図１０（ｂ）に示すように、コイル３の外側に位置するとともに、ヨーク４の四隅に等分に配設されている。また、磁石５の台形形状における傾斜する２つの外側面は、外ヨーク４Ａに沿った形状をしている。このため、レンズ駆動装置１０１を組み立てる際に、この２つの外側面を外ヨーク４Ａに押しあてて配置することができ、磁石５の位置決めを容易に行うことができる。そして、図示はしていないが、磁石５は、ヨーク４の段差部４Ｄとの間に板ばね６（上側板ばね１６）の一部を挟持するようにして、接着剤により、ヨーク４に固定されている。 Finally, the magnet 5 of the drive mechanism MK will be described. As shown in FIG. 1, the magnet 5 has a trapezoidal cross-sectional shape and a flat outer shape, and the four magnets 5 are positioned outside the coil 3 as shown in FIG. In addition, the yokes 4 are equally arranged at the four corners. Further, the two inclined outer surfaces in the trapezoidal shape of the magnet 5 have a shape along the outer yoke 4A. For this reason, when assembling the lens driving device 101, the two outer surfaces can be pressed against the outer yoke 4A and arranged, and the magnet 5 can be easily positioned. Although not shown, the magnet 5 is fixed to the yoke 4 with an adhesive so that a part of the leaf spring 6 (upper leaf spring 16) is sandwiched between the stepped portion 4D of the yoke 4. Has been.
　次に、レンズ駆動装置１０１の板ばね６及び固定側部材ＲＧについて説明する。図１１は、板ばね６を説明する図であって、図１１（ａ）は、上側板ばね１６の上面図であり、図１１（ｂ）は、下側板ばね２６Ａ及び下側板ばね２６Ｂの上面図である。図１２は、板ばね６（下側板ばね２６Ａ）とコイル３との接続状態を説明する図であって、図１２（ａ）は、図１０（ａ）に示すＳ部分の拡大底面図であり、図１２（ｂ）は、図１０（ａ）に示すＳ部分をＸ２側から見た板ばね６（下側板ばね２６Ａ）、コイル３及びレンズ保持部材２の拡大側面図である。なお、図１２には、説明を分かり易くするため、導電性接着剤ＣＡがクロスハッチングで示されている。図１３は、固定側部材ＲＧのベース部材１８を説明する図であって、図１３（ａ）は、ベース部材１８の上方斜視図であり、図１３（ｂ）は、ベース部材１８に下側板ばね２６Ａ及び下側板ばね２６Ｂを組み付けた上方斜視図である。 Next, the leaf spring 6 and the fixed side member RG of the lens driving device 101 will be described. 11A and 11B are views for explaining the leaf spring 6, in which FIG. 11A is a top view of the upper leaf spring 16, and FIG. 11B is an upper surface of the lower leaf spring 26A and the lower leaf spring 26B. FIG. FIG. 12 is a view for explaining the connection state between the leaf spring 6 (lower leaf spring 26A) and the coil 3, and FIG. 12 (a) is an enlarged bottom view of the S portion shown in FIG. 10 (a). FIG. 12B is an enlarged side view of the leaf spring 6 (lower leaf spring 26A), the coil 3, and the lens holding member 2 when the S portion shown in FIG. 10A is viewed from the X2 side. In FIG. 12, the conductive adhesive CA is shown by cross-hatching for easy understanding. 13A and 13B are diagrams illustrating the base member 18 of the fixed side member RG. FIG. 13A is an upper perspective view of the base member 18, and FIG. 13B is a diagram illustrating the lower plate on the base member 18. It is the upper perspective view which assembled | attached the spring 26A and the lower leaf | plate spring 26B.
　先ず、レンズ駆動装置１０１の板ばね６は、銅合金を主な材質とした金属板から作製されており、図１に示すように、レンズ保持部材２とヨーク４との間に配設される上側板ばね１６と、レンズ保持部材２とベース部材１８との間に配設される２つの下側板ばね（２６Ａ、２６Ｂ）と、から構成されている。そして、レンズ保持部材２と板ばね６のそれぞれ（上側板ばね１６、下側板ばね２６Ａ、下側板ばね２６Ｂ）が係合されて、レンズ保持部材２が光軸方向ＪＤ（図２に示すＺ方向）へ移動可能になるように、レンズ保持部材２を空中で支持している。なお、下側板ばね２６Ａ及び下側板ばね２６Ｂは、コイル３の両端側とそれぞれ電気的に接続されているので、コイル３への給電部材としても用いられる。 First, the leaf spring 6 of the lens driving device 101 is made of a metal plate mainly made of a copper alloy, and is disposed between the lens holding member 2 and the yoke 4 as shown in FIG. The upper plate spring 16 includes two lower plate springs (26A, 26B) disposed between the lens holding member 2 and the base member 18. Then, each of the lens holding member 2 and the leaf spring 6 (upper leaf spring 16, lower leaf spring 26A, lower leaf spring 26B) is engaged, and the lens holding member 2 is in the optical axis direction JD (Z direction shown in FIG. 2). The lens holding member 2 is supported in the air so that it can be moved to. Note that the lower leaf spring 26 </ b> A and the lower leaf spring 26 </ b> B are electrically connected to both ends of the coil 3, respectively, and are also used as a power feeding member for the coil 3.
　先ず、板ばね６の上側板ばね１６は、図１１（ａ）に示すように、略矩形状をしており、レンズ保持部材２に固定される内側部分と、固定側部材ＲＧに固定される外側部分と、内側部分と外側部分との間に位置する４箇所の弾性腕部１６ｇと、を有して構成されている。具体的には、内側部分は、対向した位置に２箇所設けられているとともに、それぞれの内側部分には、レンズ保持部材２の光軸方向ＪＤにおける他端部側（上端部側）に固定される２箇所の第１部分１６ａを有している（合わせて４箇所の第１部分１６ａ）。また、外側部分は、ヨーク４と磁石５とで挟持されて固定される４箇所の第２部分１６ｂと、４箇所の第２部分１６ｂ同士を繋ぐ桟部１６ｒと、を有している。なお、ここでのヨーク４及び磁石５は、固定側部材ＲＧとして機能している。 First, as shown in FIG. 11A, the upper leaf spring 16 of the leaf spring 6 has a substantially rectangular shape, and is fixed to the inner portion fixed to the lens holding member 2 and the fixed side member RG. It has an outer portion and four elastic arm portions 16g located between the inner portion and the outer portion. Specifically, two inner portions are provided at opposite positions, and each inner portion is fixed to the other end side (upper end side) of the lens holding member 2 in the optical axis direction JD. Two first portions 16a (four first portions 16a in total). The outer portion has four second portions 16b that are clamped and fixed by the yoke 4 and the magnet 5, and a crosspiece 16r that connects the four second portions 16b. Note that the yoke 4 and the magnet 5 here function as the fixed side member RG.
　そして、上側板ばね１６がレンズ駆動装置１０１に組み込まれた際には、図４（ａ）に示すように、第１部分１６ａがレンズ保持部材２の台座部１２ｄに載置され、第１部分１６ａと台座部１２ｄとを接着剤で固定することにより、上側板ばね１６の内側部分がレンズ保持部材２に固定されるようになる。また、図４（ｂ）に示すように、第２部分１６ｂが磁石５の上面と当接し、図示はしていないが、ヨーク４との間に挟持されて、上側板ばね１６の外側部分が固定されるようになる。 When the upper leaf spring 16 is incorporated into the lens driving device 101, as shown in FIG. 4A, the first portion 16a is placed on the pedestal portion 12d of the lens holding member 2, and the first portion The inner part of the upper leaf spring 16 is fixed to the lens holding member 2 by fixing the 16a and the pedestal part 12d with an adhesive. Further, as shown in FIG. 4B, the second portion 16b contacts the upper surface of the magnet 5 and is not shown, but is sandwiched between the yoke 4 and the outer portion of the upper leaf spring 16 is It becomes fixed.
　また、上側板ばね１６は、図１１（ａ）に示すように、ほぼ線対称の形状に構成しており、第１部分１６ａの２箇所の均等な位置でレンズ保持部材２に固定されているとともに、ベース部材１８と一体化されたヨーク４に対して第２部分１６ｂの４箇所の均等な位置で固定されている。これにより、上側板ばね１６は、レンズ保持部材２をバランス良く空中で支持することができる。 Further, as shown in FIG. 11A, the upper leaf spring 16 has a substantially line-symmetric shape, and is fixed to the lens holding member 2 at two equal positions of the first portion 16a. In addition, the yoke 4 integrated with the base member 18 is fixed at four equal positions of the second portion 16b. Accordingly, the upper leaf spring 16 can support the lens holding member 2 in the air in a well-balanced manner.
　次に、板ばね６の下側板ばね（２６Ａ、２６Ｂ）は、図１１（ｂ）に示すように、それぞれの内側形状が半円形状をしており、レンズ保持部材２の光軸方向ＪＤにおける一端部（下端部）に固定される内側部分と、固定側部材ＲＧに固定される外側部分と、内側部分と外側部分との間に位置する４箇所の弾性腕部２６ｇと、を有して構成されている。 Next, as shown in FIG. 11B, the lower leaf springs (26A, 26B) of the leaf spring 6 each have a semicircular shape, and the lens holding member 2 in the optical axis direction JD. An inner portion fixed to one end portion (lower end portion), an outer portion fixed to the fixed side member RG, and four elastic arm portions 26g located between the inner portion and the outer portion; It is configured.
　また、下側板ばね（２６Ａ、２６Ｂ）の内側部分は、図１１（ｂ）に示すように、レンズ保持部材２と係合される６箇所の第３部分２６ｃと、３箇所の第３部分２６ｃ間を繋ぐ４つの第１連結部２６ｐと、コイル３の延在部３３と対向する接続板部２６ｈ（図１２を参照）と、を有して構成されている。 Further, as shown in FIG. 11B, the inner portions of the lower leaf springs (26A, 26B) are composed of six third portions 26c engaged with the lens holding member 2 and three third portions 26c. It has four first connecting portions 26p that connect them, and a connecting plate portion 26h (see FIG. 12) that faces the extending portion 33 of the coil 3.
　そして、この下側板ばね（２６Ａ、２６Ｂ）がレンズ駆動装置１０１に組み込まれた際には、図６及び図８に示すレンズ保持部材２の６つの突設部２ｔが図１１（ｂ）に示す下側板ばね（２６Ａ、２６Ｂ）の第３部分２６ｃに設けられた円形の貫通孔に挿通されて嵌合される。これにより、下側板ばね２６Ａ及び下側板ばね２６Ｂの内側部分がレンズ保持部材２に位置決めされるとともに、レンズ保持部材２に固定される。なお、この際には、レンズ保持部材２の突設部２ｔに熱かしめを施して、より確実に下側板ばね２６Ａ及び下側板ばね２６Ｂをレンズ保持部材２に固定している。 And when this lower leaf | plate spring (26A, 26B) is integrated in the lens drive device 101, the six protrusion parts 2t of the lens holding member 2 shown in FIG.6 and FIG.8 are shown in FIG.11 (b). The lower leaf springs (26A, 26B) are inserted and fitted into circular through holes provided in the third portion 26c. Accordingly, the inner portions of the lower leaf spring 26 </ b> A and the lower leaf spring 26 </ b> B are positioned on the lens holding member 2 and fixed to the lens holding member 2. At this time, heat projection is applied to the projecting portion 2t of the lens holding member 2 so that the lower leaf spring 26A and the lower leaf spring 26B are more securely fixed to the lens holding member 2.
　また、下側板ばね（２６Ａ、２６Ｂ）の内側部分の接続板部２６ｈは、図１２に示すように、レンズ駆動装置１０１が組み立てられた際には、レンズ保持部材２の突堤部８２（対向部）と対向するようになってる。これにより、内側部分の接続板部２６ｈの一面（上面）（図１２（ｂ）に示すＺ１方向側の面）が突堤部８２で形成された収容部８２ｓと対向するとともに、板ばね６（下側板ばね２６Ａ、下側板ばね２６Ｂ）内側部分の一面とレンズ保持部材２の対向部（突堤部８２及び収容部８２ｓの内底面）との間に、コイル３の延在部３３の接続部３３ｃが延在するようになる。 Further, as shown in FIG. 12, the connecting plate portion 26h on the inner side of the lower leaf spring (26A, 26B) is connected to the jetty portion 82 (opposing portion) of the lens holding member 2 when the lens driving device 101 is assembled. ). Thereby, one surface (upper surface) (surface on the Z1 direction side shown in FIG. 12 (b)) of the inner side connection plate portion 26h faces the accommodating portion 82s formed by the jetty portion 82, and the leaf spring 6 (lower The connecting portion 33c of the extending portion 33 of the coil 3 is provided between one surface of the inner side portion of the side leaf spring 26A and the lower leaf spring 26B) and the facing portion of the lens holding member 2 (the inner bottom surface of the pier portion 82 and the accommodating portion 82s). It becomes extended.
　そして、内側部分の接続板部２６ｈには、図１２（ａ）に示すように、突堤部８２の開放部８２ｚと対向する位置に、両側から切り欠かれた貫通部２６ｔが設けられているとともに、コイル３の巻き付け部３３ｍと隙間を有した端面側に、巻き付け部３３ｍ側が開放されたＵ字形状（半円形状）の切欠き部２６ｋが設けられている。なお、貫通部２６ｔは、平面視して、突堤部８２の内側壁部８２ｕ及び外側壁部８２ｖの端縁部が臨まれる位置に設けられ、貫通部２６ｔを構成している壁端面２６ｅがこの端縁部に重なって設けられている。また、切欠き部２６ｋは、収容部８２ｓを臨むようにこの収容部８２ｓと対向して形成されている。 In addition, as shown in FIG. 12A, the inner side connection plate portion 26 h is provided with a through portion 26 t cut away from both sides at a position facing the open portion 82 z of the jetty portion 82. A U-shaped (semi-circular) cutout portion 26k is provided on the end surface side having a gap with the winding portion 33m of the coil 3 so that the winding portion 33m side is opened. In addition, the penetration part 26t is provided in the position where the edge part of the inner wall part 82u of the jetty part 82 and the outer side wall part 82v faces in planar view, and the wall end surface 26e which comprises the penetration part 26t is this It is provided to overlap the edge. Further, the notch 26k is formed to face the accommodating portion 82s so as to face the accommodating portion 82s.
また、下側板ばね（２６Ａ、２６Ｂ）がレンズ保持部材２に組み付けられた際には、図１２（ｂ）に示すように、保持部７２を構成する突出部は、その先端が下側板ばね（２６Ａ、２６Ｂ）の接続板部２６ｈ（内側部分）の下面である他面（収容部８２ｓと対向する一面と反対側の面）側に位置するように、内側部分から下方（図１２（ｂ）に示すＺ２方向）に突出している。更に、突出部に巻き付けられた巻き付け部３３ｍの一部も、内側部分から下方（図１２（ｂ）に示すＺ２方向）に位置している。 Further, when the lower leaf springs (26A, 26B) are assembled to the lens holding member 2, as shown in FIG. 12 (b), the projecting portion constituting the holding portion 72 has the lower leaf spring ( 26A and 26B) from the inner portion so as to be located on the other surface (the surface opposite to the one surface facing the accommodating portion 82s) which is the lower surface of the connecting plate portion 26h (inner portion) (FIG. 12B). (Z2 direction). Further, a part of the winding portion 33m wound around the protruding portion is also located below (in the Z2 direction shown in FIG. 12B) from the inner portion.
　以上のようにして構成された、板ばね６の下側板ばね（２６Ａ、２６Ｂ）とコイル３の延在部３３とが、合成樹脂中に銀粒子等の導電性フィラーが分散された導電性接着剤ＣＡで電気的に接続されている。具体的な方法は、下側板ばね（２６Ａ、２６Ｂ）をレンズ保持部材２に組み込む前に、先ず、レンズ保持部材２の突堤部８２で囲まれた収容部８２ｓに導電性接着剤ＣＡを充填し、その後、下側板ばね（２６Ａ、２６Ｂ）をレンズ保持部材２に装着する。そして、レンズ保持部材２の突設部２ｔを熱かしめするとともに、導電性接着剤ＣＡを熱硬化する。この導電性接着剤ＣＡの収容部８２ｓへの充填工程ないし導電性接着剤ＣＡの熱硬化工程は、保持部７２（突出部）が上方に突出するようにレンズ保持部材２を逆さまにした状態で行われる。これにより、本発明の第１実施形態では、対向部に突堤部８２を有しているので、導電性接着剤ＣＡを収容部８２ｓ上に充填する際に、流動性を有する導電性接着剤ＣＡを所望の位置（収容部８２ｓ）に保持することができる。このことにより、レンズ保持部材２の対向部と下側板ばね（２６Ａ、２６Ｂ）の内側部分との間に延在している接続部３３ｃがこの収容部８２ｓに配設されて、接続部３３ｃを導電性接着剤ＣＡに確実に埋設させることができる。なお、導電性接着剤ＣＡは、熱硬化型に限らず、紫外線硬化型のものでも構わない。 The lower leaf springs (26A, 26B) of the leaf spring 6 and the extending portion 33 of the coil 3 configured as described above are conductive adhesives in which conductive fillers such as silver particles are dispersed in a synthetic resin. It is electrically connected with the agent CA. Specifically, before the lower leaf springs (26A, 26B) are incorporated into the lens holding member 2, first, the accommodating portion 82s surrounded by the jetty portion 82 of the lens holding member 2 is filled with the conductive adhesive CA. Thereafter, the lower leaf springs (26 A, 26 B) are attached to the lens holding member 2. Then, the projecting portion 2t of the lens holding member 2 is heat caulked, and the conductive adhesive CA is thermoset. In the filling process of the conductive adhesive CA into the housing portion 82s or the thermal curing process of the conductive adhesive CA, the lens holding member 2 is turned upside down so that the holding part 72 (protruding part) protrudes upward. Done. Thereby, in 1st Embodiment of this invention, since it has the jetty part 82 in the opposing part, when filling the electrically conductive adhesive CA on the accommodating part 82s, the electrically conductive adhesive CA which has fluidity | liquidity. Can be held at a desired position (accommodating portion 82s). Accordingly, the connecting portion 33c extending between the facing portion of the lens holding member 2 and the inner portion of the lower leaf spring (26A, 26B) is disposed in the accommodating portion 82s, and the connecting portion 33c is connected to the connecting portion 33c. It can be reliably embedded in the conductive adhesive CA. The conductive adhesive CA is not limited to the thermosetting type, and may be an ultraviolet curable type.
　これにより、従来例のようなコイル端部９３４（コイルの端部）が巻かれた絡げピン９１５の側面と像側バネ部材９１４ｘ（板ばね６に相当）の面との間に導電性接着剤９５５等を配置するような構成でなく、レンズ保持部材２の対向部と板ばね６（下側板ばね２６Ａ及び下側板ばね２６Ｂ）の内側部分との間に、コイル３の延在部３３と板ばね６の内側部分とを電気的に接続する導電性接着剤ＣＡが設けられている構成となる。このため、コイル３の端部をより長く巻き付け電気的な接続を確保するための絡げ部（絡げピン９１５）を設ける必要がない、或いは絡げ部（保持部７２）の突出高さを高くする必要がない。このことにより、レンズ保持部材２の光軸方向ＪＤにおける高さ寸法を小さくすることができ、ひいてはレンズ駆動装置１０１の光軸方向ＪＤにおける高さ寸法を小さくすることができる。 As a result, conductive bonding is performed between the side surface of the binding pin 915 around which the coil end portion 934 (coil end portion) is wound and the surface of the image side spring member 914x (corresponding to the leaf spring 6) as in the conventional example. The extending portion 33 of the coil 3 is not disposed between the facing portion of the lens holding member 2 and the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B). The conductive adhesive CA that electrically connects the inner part of the leaf spring 6 is provided. For this reason, it is not necessary to wind the end part of the coil 3 for a longer time and to provide a binding part (entanglement pin 915) for ensuring electrical connection, or the protrusion height of the binding part (holding part 72) is increased. There is no need to raise it. As a result, the height dimension of the lens holding member 2 in the optical axis direction JD can be reduced, and as a result, the height dimension of the lens driving device 101 in the optical axis direction JD can be reduced.
　また、対向配置されるレンズ保持部材２の対向部と板ばね６（下側板ばね２６Ａ及び下側板ばね２６Ｂ）の内側部分との間に導電性接着剤ＣＡが設けられて接続されているので、落下等による強い衝撃がレンズ駆動装置１０１に加えられて板ばね６（下側板ばね２６Ａ、下側板ばね２６Ｂ）が変形した際でも、導電性接着剤ＣＡを剥がれにくいものとすることができる。つまり、従来例のような構成では、導電性接着剤９５５等がコイル端部９３４（コイルの端部）が巻かれた絡げピン９１５の側面と像側バネ部材９１４ｘ（板ばね６）の面との間にＬ字状に配置されていると、落下等による強い衝撃がレンズ駆動装置９０１に加えられて像側バネ部材９１４ｘが変形した際には、２つの部材（コイルの端部と板ばね６）の角度が広がるような力が作用し、導電性接着剤９５５等がコイル端部９３４或いは像側バネ部材９１４ｘから剥がれ易くなる。このような課題に対して、本発明の第１実施形態のレンズ駆動装置１０１は、導電性接着剤ＣＡを板ばね６等から引き剥がすような垂直方向（図２に示すＺ方向）の力は作用しにくいため、この剥がれを防止することができ、コイル３と板ばね６との電気的な接続を確実に確保することができる。 In addition, since the conductive adhesive CA is provided and connected between the facing portion of the lens holding member 2 disposed to face and the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B), Even when a strong impact due to dropping or the like is applied to the lens driving device 101 and the leaf spring 6 (lower leaf spring 26A, lower leaf spring 26B) is deformed, the conductive adhesive CA can be made difficult to peel off. In other words, in the configuration as in the conventional example, the conductive adhesive 955 or the like has the side surface of the binding pin 915 around which the coil end portion 934 (coil end portion) is wound and the surface of the image side spring member 914x (leaf spring 6). If the image side spring member 914x is deformed by applying a strong impact due to dropping or the like to the lens driving device 901, the two members (the end of the coil and the plate) A force that widens the angle of the spring 6) acts, and the conductive adhesive 955 and the like are easily peeled off from the coil end 934 or the image-side spring member 914x. For such a problem, the lens driving device 101 according to the first embodiment of the present invention has a vertical force (Z direction shown in FIG. 2) that peels the conductive adhesive CA from the leaf spring 6 or the like. Since it does not act easily, this peeling can be prevented and the electrical connection between the coil 3 and the leaf spring 6 can be ensured reliably.
　更に、延在部３３と板ばね６の内側部分とが、合成樹脂中に導電性フィラーが分散した導電性接着剤ＣＡで電気的に接続されているので、半田でしっかり固定して接続する場合と比較して、接続部分の導電性接着剤ＣＡ層の弾性が高いため、板ばね６の内側部分（接続板部２６ｈ）の僅かな可動を許容している。このため、内側部分に引張力が働いた際に、内側部分の可動で、この引張力を緩和することができる。このことにより、落下等で強い衝撃がレンズ駆動装置１０１に加わった場合でも、内側部分が剥がれるのを防止することができ、コイル３と板ばね６との接続をより確実に確保することができる。更に、接続部分の導電性接着剤ＣＡ層の弾性が高いため、延在部３３の僅かな可動も許容している。このため、延在部３３に引張力が働いた際に、延在部３３の可動で、この引張力を緩和することができる。このことにより、落下等で強い衝撃がレンズ駆動装置１０１に加わった場合でも、延在部３３が切欠部５２ｋのエッジでより一層切断され難いものとすることができる。 Furthermore, since the extending portion 33 and the inner portion of the leaf spring 6 are electrically connected by the conductive adhesive CA in which the conductive filler is dispersed in the synthetic resin, the connection is firmly fixed with the solder. Since the elasticity of the conductive adhesive CA layer at the connecting portion is high, the inner portion (connecting plate portion 26h) of the leaf spring 6 is allowed to move slightly. For this reason, when a tensile force acts on the inner portion, the tensile force can be relaxed by the movement of the inner portion. As a result, even when a strong impact is applied to the lens driving device 101 due to dropping or the like, it is possible to prevent the inner portion from being peeled off, and to ensure the connection between the coil 3 and the leaf spring 6 more reliably. . Furthermore, since the elasticity of the conductive adhesive CA layer at the connecting portion is high, slight movement of the extending portion 33 is allowed. For this reason, when a tensile force is applied to the extending portion 33, the tensile force can be relaxed by the movement of the extending portion 33. Accordingly, even when a strong impact is applied to the lens driving device 101 due to dropping or the like, the extending portion 33 can be made more difficult to be cut at the edge of the notch portion 52k.
　また、延在部３３の接続部３３ｃがレンズ保持部材２の対向部（収容部８２ｓの内底面）と下側板ばね（２６Ａ、２６Ｂ）の内側部分（接続板部２６ｈ）との間で導電性接着剤ＣＡに埋設されているので、この接続部３３ｃで、コイル３の延在部３３と板ばね６の内側部分とを確実に導通接続させることができる。 Further, the connecting portion 33c of the extending portion 33 is electrically conductive between the facing portion of the lens holding member 2 (the inner bottom surface of the accommodating portion 82s) and the inner portion (the connecting plate portion 26h) of the lower leaf springs (26A, 26B). Since it is embedded in the adhesive CA, the extension 33 of the coil 3 and the inner part of the leaf spring 6 can be reliably connected by this connection portion 33c.
　また、突堤部８２に隣接して、レンズ保持部材２の一端部から突堤部８２と同じ方向へ突出する突出部からなる保持部７２を有し、コイル３の延在部３３がこの突出部に巻き付けられているので、延在部３３の巻き付け部３３ｍを容易に保持することができる。しかもコイル３の巻き付け部３３ｍと板ばね６（下側板ばね２６Ａ及び下側板ばね２６Ｂ）の内側部分との間に導電性接着剤ＣＡが設けられており、コイル３の接続部３３ｃに加えてこの巻き付け部３３ｍでも板ばね６と導通接続させることができる。このことにより、導電性接着剤ＣＡに接する延在部３３の面積を広くすることができ、確実に導通接続させることができるとともに、板ばね６とコイル３との導通抵抗を小さくすることができる。 Moreover, it has the holding part 72 which consists of the protrusion part which protrudes in the same direction as the jetty part 82 from the one end part of the lens holding member 2 adjacent to the jetty part 82, and the extension part 33 of the coil 3 is in this protrusion part. Since it is wound, the winding part 33m of the extending part 33 can be easily held. Moreover, a conductive adhesive CA is provided between the winding portion 33m of the coil 3 and the inner portion of the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B). In addition to the connection portion 33c of the coil 3, this conductive adhesive CA is provided. Even the winding portion 33m can be electrically connected to the leaf spring 6. As a result, the area of the extending portion 33 in contact with the conductive adhesive CA can be increased, and the conductive connection between the leaf spring 6 and the coil 3 can be reduced while the conductive connection can be ensured. .
　また、本発明の第１実施形態では、板ばね６の接続板部２６ｈには、突堤部８２で形成された収容部８２ｓを臨んだ切欠き部２６ｋが形成されており、この切欠き部２６ｋから導電性接着剤ＣＡが露出している構成となっている。このため、切欠き部２６ｋの端面にも導電性接着剤ＣＡが接することとなり、板ばね６の内側部分とコイル３の延在部３３との電気的な接続が確実なものとなる。 Moreover, in 1st Embodiment of this invention, the notch part 26k which faced the accommodating part 82s formed in the jetty part 82 is formed in the connection board part 26h of the leaf | plate spring 6, This notch part 26k. Therefore, the conductive adhesive CA is exposed. For this reason, the conductive adhesive CA is also in contact with the end face of the notch 26k, and the electrical connection between the inner portion of the leaf spring 6 and the extending portion 33 of the coil 3 is ensured.
　また、収容部８２ｓに導電性接着剤ＣＡを充填して、その後に板ばね６（下側板ばね２６Ａ及び下側板ばね２６Ｂ）をレンズ保持部材２に装着する場合には、導電性接着剤ＣＡの充填量がばらついても、この切欠き部２６ｋによりその量のばらつきを吸収できる。つまり、導電性接着剤ＣＡが多い場合には、切欠き部２６ｋから導電性接着剤ＣＡが板ばね６の内側部分（接続板部２６ｈ）の他面側に流れ出させることが可能である。更に、切欠き部２６ｋの部分を確認することで、導電性接着剤ＣＡが適切に設けられているか否かを確認することができる。 Further, when the accommodating portion 82s is filled with the conductive adhesive CA and then the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B) is attached to the lens holding member 2, the conductive adhesive CA is removed. Even if the filling amount varies, the notch 26k can absorb the variation in the amount. That is, when the amount of the conductive adhesive CA is large, the conductive adhesive CA can flow out from the notch portion 26k to the other side of the inner portion of the leaf spring 6 (connection plate portion 26h). Furthermore, it is possible to confirm whether or not the conductive adhesive CA is appropriately provided by confirming the notch portion 26k.
　更に、本発明の第１実施形態のように、切欠き部２６ｋが保持部７２（側壁部８２ｗ）側に位置し巻き付け部３３ｍと隣り合う場合には、板ばね６の内側部分（接続板部２６ｈ）の他面側にまで導電性接着剤ＣＡを設ける、或いは流れ出させることで、コイル３の延在部３３と板ばね６の内側部分とをより一層確実に導通接続させることができる。更に、導電性接着剤ＣＡに接する延在部３３の面積をより広くすることができ、板ばね６とコイル３の延在部３３との導通抵抗をより小さくすることができる。 Furthermore, as in the first embodiment of the present invention, when the notch portion 26k is located on the holding portion 72 (side wall portion 82w) side and is adjacent to the winding portion 33m, the inner portion of the leaf spring 6 (connection plate portion) 26h) By providing the conductive adhesive CA to the other surface side or causing the conductive adhesive CA to flow out, the extended portion 33 of the coil 3 and the inner portion of the leaf spring 6 can be more securely connected. Furthermore, the area of the extended portion 33 in contact with the conductive adhesive CA can be increased, and the conduction resistance between the leaf spring 6 and the extended portion 33 of the coil 3 can be further reduced.
　更に、収容部８２ｓに導電性接着剤ＣＡを充填して、その後に板ばね６（下側板ばね２６Ａ及び下側板ばね２６Ｂ）をレンズ保持部材２に配置した場合に、巻き付け部３３ｍ側に向けて開放された切欠き部２６ｋが内側部分（接続板部２６ｈ）に形成されているので、導電性接着剤ＣＡが巻き付け部３３ｍ側に押し出されるため、内側部分の端面（切欠き部２６ｋの端面を含む）と巻き付け部３３ｍとの間に導電性接着剤ＣＡを確実に設けることができ、板ばね６の内側部分とコイル３の延在部３３との導通抵抗を下げてより確実に電気的に接続することができる。 Furthermore, when the accommodating portion 82s is filled with the conductive adhesive CA, and then the leaf spring 6 (the lower leaf spring 26A and the lower leaf spring 26B) is disposed on the lens holding member 2, it faces toward the winding portion 33m. Since the opened notch 26k is formed in the inner part (connection plate part 26h), the conductive adhesive CA is pushed out to the winding part 33m side, so that the end face of the inner part (the end face of the notch 26k is The conductive adhesive CA can be reliably provided between the winding portion 33m and the winding portion 33m, and the conduction resistance between the inner portion of the leaf spring 6 and the extending portion 33 of the coil 3 can be lowered more reliably and electrically. Can be connected.
　また、突堤部８２は、内側壁部８２ｕと外側壁部８２ｖとの間隔が、保持部７２（７２Ａ、７２Ｂ）側の一方側よりも開放部８２ｚ側の他方側の方が狭くなるように形成されている。このため、より多くの導電性接着剤ＣＡを巻き付け部３３ｍ側に設けることができるので、コイル３と板ばね６間の導通抵抗をより小さくすることができる。しかも、開放部８２ｚ側が狭く形成され、開放部８２ｚに延在部３３（接続部３３ｃ）が挿通されているので、収容部８２ｓに充填された導電性接着剤ＣＡが開放部８２ｚを介して流れ出し難くすることができる。 Further, the jetty portion 82 is formed such that the interval between the inner wall portion 82u and the outer wall portion 82v is narrower on the other side on the open portion 82z side than on one side on the holding portion 72 (72A, 72B) side. Has been. For this reason, since more conductive adhesive CA can be provided in the winding part 33m side, the conduction | electrical_connection resistance between the coil 3 and the leaf | plate spring 6 can be made smaller. Moreover, since the open portion 82z side is narrowly formed and the extending portion 33 (connecting portion 33c) is inserted into the open portion 82z, the conductive adhesive CA filled in the accommodating portion 82s flows out through the open portion 82z. Can be difficult.
　また、図１２（ａ）に示すように、開放部８２ｚ（図９（ａ）を参照）と対向する位置における内側部分には、貫通部２６ｔが設けられているので、仮に導電性接着剤ＣＡが保持部７２から離れる方向へ移動して開放部８２ｚから流れ出そうとしても、貫通部２６ｔを構成する壁端面２６ｅでそれ以上の流れ出しを食い止めることができる。 Further, as shown in FIG. 12 (a), since the through portion 26t is provided in the inner portion at a position facing the open portion 82z (see FIG. 9 (a)), the conductive adhesive CA is temporarily provided. Even if it moves in the direction away from the holding part 72 and tries to flow out from the opening part 82z, the wall end face 26e constituting the penetrating part 26t can prevent further flow out.
　一方、下側板ばね（２６Ａ、２６Ｂ）の外側部分は、図１１（ｂ）に示すように、ベース部材１８と係合される４箇所の第４部分２６ｄと、２箇所の第４部分２６ｄ同士を繋ぐ２つの第２連結部２６ｑと、を有して構成されている。なお、言うまでもないが、下側板ばね（２６Ａ、２６Ｂ）の外側部分は、図１０（ａ）に示すように、内側部分よりもレンズ保持部材２の中心からの距離が大きく、内側部分の外側に位置している。 On the other hand, as shown in FIG. 11B, the outer portions of the lower leaf springs (26A, 26B) include four fourth portions 26d engaged with the base member 18 and two fourth portions 26d. Two second connecting portions 26q that connect the two. Needless to say, the outer portion of the lower leaf spring (26A, 26B) has a larger distance from the center of the lens holding member 2 than the inner portion, as shown in FIG. positioned.
　そして、下側板ばね（２６Ａ、２６Ｂ）の第４部分２６ｄに設けられた６つの貫通孔に、後述するベース部材１８の上面に設けられた６つの突設部１８ｔ（図１３を参照）が挿通されて嵌合される。これにより、下側板ばね２６Ａ及び下側板ばね２６Ｂの外側部分がベース部材１８に位置決めされるとともに、固定側部材ＲＧであるベース部材１８に固定される。 Then, six projecting portions 18t (see FIG. 13) provided on the upper surface of the base member 18 described later are inserted into the six through holes provided in the fourth portion 26d of the lower leaf spring (26A, 26B). And fitted. As a result, the outer portions of the lower leaf spring 26A and the lower leaf spring 26B are positioned on the base member 18 and fixed to the base member 18 that is the stationary member RG.
　また、下側板ばね２６Ａと下側板ばね２６Ｂとは、図１１（ｂ）に示すように、ほぼ線対称の形状に構成しており、レンズ保持部材２に対して第３部分２６ｃの４箇所の対称な位置で接続されているとともに、ベース部材１８に対して第４部分２６ｄの４箇所の均等な位置で接続されている。これにより、レンズ保持部材２をバランス良く空中で支持することができる。従って、以上のように構成された板ばね６（上側板ばね１６、下側板ばね２６Ａ及び下側板ばね２６Ｂ）により、レンズ保持部材２を光軸方向ＪＤへ移動可能に支持している。 Further, as shown in FIG. 11B, the lower leaf spring 26 </ b> A and the lower leaf spring 26 </ b> B are configured in a substantially line-symmetric shape, and the four portions of the third portion 26 c with respect to the lens holding member 2. In addition to being connected at symmetrical positions, the base member 18 is connected at four equal positions of the fourth portion 26d. Thereby, the lens holding member 2 can be supported in the air with good balance. Therefore, the lens holding member 2 is supported by the leaf spring 6 (upper leaf spring 16, lower leaf spring 26A and lower leaf spring 26B) configured as described above so as to be movable in the optical axis direction JD.
　最後に、レンズ駆動装置１０１の固定側部材ＲＧについて説明する。 Finally, the fixed side member RG of the lens driving device 101 will be described.
　レンズ駆動装置１０１の固定側部材ＲＧは、上側板ばね１６の第２部分１６ｂを固定するヨーク４及び磁石５と、下側板ばね（２６Ａ、２６Ｂ）の第４部分２６ｄを固定するベース部材１８と、を有して構成されている。ここでは、上側板ばね１６の固定側部材ＲＧについては、駆動機構ＭＫでもあるヨーク４及び磁石５の項目で前述したので説明を省略し、下側板ばね（２６Ａ、２６Ｂ）の固定側部材ＲＧについてのみ説明する。 The fixed member RG of the lens driving device 101 includes a yoke 4 and a magnet 5 that fix the second portion 16b of the upper leaf spring 16, and a base member 18 that fixes the fourth portion 26d of the lower leaf spring (26A, 26B). , And is configured. Here, since the fixed side member RG of the upper leaf spring 16 has been described in the items of the yoke 4 and the magnet 5 which are also the drive mechanism MK, description thereof will be omitted, and the fixed side member RG of the lower leaf spring (26A, 26B). Only explained.
　固定側部材ＲＧのベース部材１８は、液晶ポリマー（ＬＣＰ）等の合成樹脂を用いて射出成形して作製されており、図１及び図１３に示すように、外形が矩形の板状形状で構成され、中央に円形の開口１８ｋが形成されている。また、ベース部材１８の上面には、上方に向けて突出する６つの突設部１８ｔが四隅に設けられている。そして、下側板ばね（２６Ａ、２６Ｂ）の第４部分２６ｄに設けられた貫通孔に、ベース部材１８の上面に設けられた突設部１８ｔが挿通されて、貫通孔と突設部１８ｔとが嵌合される。なお、この際には、ベース部材１８の突設部１８ｔに熱かしめを施して、より確実に下側板ばね２６Ａ及び下側板ばね２６Ｂをベース部材１８に固定している。 The base member 18 of the fixed-side member RG is manufactured by injection molding using a synthetic resin such as liquid crystal polymer (LCP), and has a rectangular plate shape as shown in FIGS. A circular opening 18k is formed at the center. Further, on the upper surface of the base member 18, six projecting portions 18 t projecting upward are provided at the four corners. And the protrusion part 18t provided in the upper surface of the base member 18 is penetrated by the through-hole provided in the 4th part 26d of the lower leaf | plate spring (26A, 26B), and a through-hole and the protrusion part 18t are inserted. Mated. At this time, the caulking portion 18t of the base member 18 is heat caulked to more reliably fix the lower leaf spring 26A and the lower leaf spring 26B to the base member 18.
　ベース部材１８には、図１及び図１３に示すように、銅や鉄若しくはそれらを主成分とした合金等の材質を用いた金属板からなる端子７が、インサート成形されて埋め込まれている。そして、電気的に絶縁された２つの端子７（端子７Ａ及び端子７Ｂ）のそれぞれは、図示していない撮像素子を実装した基板と電気的に接続され、この２つの端子７から電力を供給できるようになっている。そして、端子７の一方の端子７Ａは、下側板ばね２６Ａと電気的に接続されるとともに、端子７の他方の端子７Ｂは、下側板ばね２６Ｂと電気的に接続されており、この端子７Ａ及び端子７Ｂから、下側板ばね２６Ａ及び下側板ばね２６Ｂを介して、コイル３に電流を流すことができる。 As shown in FIGS. 1 and 13, a terminal 7 made of a metal plate made of a material such as copper, iron, or an alloy containing them as a main component is embedded in the base member 18 by insert molding. Each of the two electrically insulated terminals 7 (terminal 7A and terminal 7B) is electrically connected to a substrate on which an imaging element (not shown) is mounted, and power can be supplied from these two terminals 7. It is like that. One terminal 7A of the terminal 7 is electrically connected to the lower leaf spring 26A, and the other terminal 7B of the terminal 7 is electrically connected to the lower leaf spring 26B. A current can be passed from the terminal 7B to the coil 3 via the lower leaf spring 26A and the lower leaf spring 26B.
　また、ベース部材１８には、詳細な図示はしていないが、銅や鉄若しくはそれらを主成分とした合金等の材質を用いた金属板からなる接続部材５７も、端子７と同様に、インサート成形されて埋め込まれており、接続部材５７の一部は、図２に示すように、ヨーク４の四隅に一部を露出している。そして、ヨーク４の外ヨーク４Ａの内壁とベース部材１８の外周側面が組み合わさって位置決めされた後に、ベース部材１８の接続部材５７とヨーク４の四隅とのつなぎ目部分を４箇所溶接して、ヨーク４をベース部材１８に固定している。 Although not shown in detail in the base member 18, a connection member 57 made of a metal plate made of a material such as copper, iron, or an alloy containing them as a main component is also inserted like the terminal 7. The part of the connecting member 57 is partially exposed at the four corners of the yoke 4 as shown in FIG. After the inner wall of the outer yoke 4A of the yoke 4 and the outer peripheral side surface of the base member 18 are positioned and positioned, four joints between the connecting member 57 of the base member 18 and the four corners of the yoke 4 are welded, 4 is fixed to the base member 18.
　以上のように構成された本発明の第１実施形態のレンズ駆動装置１０１における、効果について、以下に纏めて説明する。なお、本発明の第１実施形態における下側板ばね（２６Ａ、２６Ｂ）が本発明の“板ばね”に相当するものであるので、以降の説明では、特に断りのない限り、“板ばね６”とは、“下側板ばね（２６Ａ、２６Ｂ）”を指している。 The effects of the lens driving device 101 according to the first embodiment of the present invention configured as described above will be described below. Since the lower leaf springs (26A, 26B) in the first embodiment of the present invention correspond to the “leaf springs” of the present invention, in the following description, unless otherwise specified, “leaf springs 6”. Means “lower leaf springs (26A, 26B)”.
　本発明の第１実施形態のレンズ駆動装置１０１は、レンズ保持部材２の対向部と板ばね６の内側部分との間に、コイル３の延在部３３と内側部分とを電気的に接続する導電性接着剤ＣＡが設けられているので、コイル３の端部をより長く巻き付け電気的な接続を確保するための絡げ部（絡げピン９１５）を設ける必要がない、或いは絡げ部の突出高さを高くする必要がない。このことにより、レンズ保持部材２の光軸方向ＪＤにおける高さ寸法を小さくすることができ、ひいてはレンズ駆動装置１０１の光軸方向ＪＤにおける高さ寸法を小さくすることができる。また、対向状態で配置されるレンズ保持部材２の対向部と板ばね６の内側部分との間に導電性接着剤ＣＡが設けられて接続されているので、落下等による強い衝撃がレンズ駆動装置１０１に加えられても、導電性接着剤ＣＡを剥がれにくいものとすることができる。 The lens driving device 101 according to the first embodiment of the present invention electrically connects the extending portion 33 and the inner portion of the coil 3 between the facing portion of the lens holding member 2 and the inner portion of the leaf spring 6. Since the conductive adhesive CA is provided, it is not necessary to wrap the end portion of the coil 3 for a longer time to secure an electrical connection, or to provide a tangling pin (915). There is no need to increase the protruding height. As a result, the height dimension of the lens holding member 2 in the optical axis direction JD can be reduced, and as a result, the height dimension of the lens driving device 101 in the optical axis direction JD can be reduced. In addition, since the conductive adhesive CA is provided and connected between the facing portion of the lens holding member 2 disposed in the facing state and the inner portion of the leaf spring 6, a strong impact due to dropping or the like is applied to the lens driving device. Even when added to 101, the conductive adhesive CA can be made difficult to peel off.
　また、接続部３３ｃが対向部と内側部分との間で導電性接着剤ＣＡに埋設されているので、この接続部３３ｃで、コイル３の延在部３３と板ばね６の内側部分とを確実に導通接続させることができる。また、対向部と内側部分との間でコイル３の延在部３３と板ばね６の内側部分とを導通接続させているので、保持部７２を延在部３３が絡げられる突出した絡げ部とした場合でも、その突出寸法を大きくする必要がない。このため、レンズ保持部材２の光軸方向ＪＤにおける高さ寸法を小さくすることが可能となり、ひいてはレンズ駆動装置１０１の光軸方向ＪＤにおける高さ寸法を小さくすることができる。 Further, since the connecting portion 33c is embedded in the conductive adhesive CA between the facing portion and the inner portion, the extending portion 33 of the coil 3 and the inner portion of the leaf spring 6 are securely connected by this connecting portion 33c. Can be electrically connected. Further, since the extension part 33 of the coil 3 and the inner part of the leaf spring 6 are electrically connected between the facing part and the inner part, the protruding part of the holding part 72 in which the extension part 33 is entangled. Even in the case of a portion, it is not necessary to increase the protruding dimension. For this reason, it is possible to reduce the height dimension of the lens holding member 2 in the optical axis direction JD, and consequently, it is possible to reduce the height dimension of the lens driving device 101 in the optical axis direction JD.
　また、接続部３３ｃを埋設する導電性接着剤ＣＡが突堤部８２で形成された収容部８２ｓに充填されているので、導電性接着剤ＣＡを充填する際に、流動性を有する導電性接着剤ＣＡを所望の位置（収容部８２ｓ）に保持することができる。このため、レンズ保持部材２の対向部と内側部分の接続板部２６ｈとの間に延在している接続部３３ｃがこの収容部８２ｓに配設されて、接続部３３ｃを導電性接着剤ＣＡに確実に埋設させることができる。このことにより、コイル３の延在部３３と板ばね６の内側部分（接続板部２６ｈ）とをより確実に導通接続させることができる。 Further, since the conductive adhesive CA that embeds the connection portion 33c is filled in the accommodating portion 82s formed by the jetty portion 82, the conductive adhesive having fluidity is filled when the conductive adhesive CA is filled. CA can be held at a desired position (accommodating portion 82s). For this reason, a connection portion 33c extending between the facing portion of the lens holding member 2 and the connection plate portion 26h of the inner portion is disposed in the housing portion 82s, and the connection portion 33c is connected to the conductive adhesive CA. Can be reliably buried. Thereby, the extension part 33 of the coil 3 and the inner side part (connection board part 26h) of the leaf | plate spring 6 can be more conductively connected.
　また、突堤部８２の一方側に設けられた保持部７２と離間した他方側には、突堤部８２の壁部が切り欠かれた開放部８２ｚが形成されているので、この開放部８２ｚにコイル３の延在部３３を挿通することができる。このため、突堤部８２で囲まれた収容部８２ｓを設けても、突堤部８２と延在部３３とが干渉することを回避することがで、レンズ保持部材２の対向部と板ばね６の内側部分との間隔を狭く保つことができる。このことにより、レンズ駆動装置１０１が光軸方向ＪＤに大きくなるのを抑制することができる。また、開放部８２ｚには延在部３３が挿通されているので、収容部８２ｓに充填された導電性接着剤ＣＡが開放部８２ｚを介して流れ出し難くすることができる。 Moreover, since the open part 82z by which the wall part of the jetty part 82 was notched is formed in the other side spaced apart from the holding | maintenance part 72 provided in the one side of the jetty part 82, it is a coil in this open part 82z. Three extending portions 33 can be inserted. For this reason, even if the accommodating portion 82s surrounded by the jetty portion 82 is provided, it is possible to prevent the jetty portion 82 and the extending portion 33 from interfering with each other, so that the opposing portion of the lens holding member 2 and the leaf spring 6 can be prevented. The distance from the inner portion can be kept narrow. This can prevent the lens driving device 101 from increasing in the optical axis direction JD. Further, since the extending portion 33 is inserted into the opening portion 82z, the conductive adhesive CA filled in the accommodating portion 82s can be prevented from flowing out through the opening portion 82z.
　また、開放部８２ｚと対向する位置における内側部分には、貫通部２６ｔが設けられているので、仮に導電性接着剤ＣＡが保持部７２から離れる方向へ移動して開放部８２ｚから流れ出そうとしても、貫通部２６ｔを構成する端縁部で、それ以上の流れ出しを食い止めることができる。 Further, since the through portion 26t is provided in the inner portion at the position facing the opening portion 82z, even if the conductive adhesive CA moves in a direction away from the holding portion 72 and flows out of the opening portion 82z. Further, it is possible to prevent further outflow at the end edge portion constituting the through portion 26t.
　また、レンズ保持部材２の一端部から突堤部８２と同じ方向へ突出する突出部からなる保持部７２を有し、コイル３の延在部３３がこの突出部に巻き付けられているので、延在部３３の巻き付け部３３ｍを容易に保持することができる。しかもコイル３の巻き付け部３３ｍと板ばね６の内側部分との間に導電性接着剤ＣＡが設けられており、接続部３３ｃに加えてこの巻き付け部３３ｍで導通接続させることができる。このことにより、導電性接着剤ＣＡに接する延在部３３の面積を広くすることができ、確実に導通接続させることができるとともに、板ばね６とコイル３との導通抵抗を小さくすることができる。 In addition, since the lens holding member 2 has a holding portion 72 formed of a protruding portion that protrudes in the same direction as the jetty portion 82 and the extending portion 33 of the coil 3 is wound around this protruding portion, the extending portion 33 extends. The winding portion 33m of the portion 33 can be easily held. In addition, a conductive adhesive CA is provided between the winding portion 33m of the coil 3 and the inner portion of the leaf spring 6, and the conductive portion CA can be conductively connected to the winding portion 33m in addition to the connection portion 33c. As a result, the area of the extending portion 33 in contact with the conductive adhesive CA can be increased, and the conductive connection between the leaf spring 6 and the coil 3 can be reduced while the conductive connection can be ensured. .
　また、板ばね６の接続板部２６ｈには、突堤部８２で形成された収容部８２ｓを臨んだ切欠き部２６ｋが形成されており、この切欠き部２６ｋから導電性接着剤ＣＡが露出しているので、切欠き部２６ｋの端面にも導電性接着剤ＣＡが接することとなり、板ばね６の内側部分とコイル３の延在部３３との電気的な接続が確実なものとなる。また、収容部８２ｓに導電性接着剤ＣＡを充填して、その後に板ばね６をレンズ保持部材２に装着する場合には、導電性接着剤ＣＡの充填量がばらついても、この切欠き部２６ｋによりその量のばらつきを吸収できる。つまり、導電性接着剤ＣＡが多い場合には、切欠き部２６ｋから導電性接着剤ＣＡが板ばね６の内側部分（接続板部２６ｈ）の他面側に流れ出させることが可能である。更に、切欠き部２６ｋの部分を確認することで、導電性接着剤ＣＡが適切に設けられているか否かを確認することができる。 Further, the connection plate portion 26h of the leaf spring 6 is formed with a notch portion 26k facing the accommodating portion 82s formed by the jetty portion 82, and the conductive adhesive CA is exposed from the notch portion 26k. Therefore, the conductive adhesive CA is also in contact with the end face of the notch 26k, and the electrical connection between the inner portion of the leaf spring 6 and the extending portion 33 of the coil 3 is ensured. In addition, when the accommodating portion 82s is filled with the conductive adhesive CA, and then the leaf spring 6 is attached to the lens holding member 2, the cutout portion is provided even if the filling amount of the conductive adhesive CA varies. The variation in the amount can be absorbed by 26k. That is, when the amount of the conductive adhesive CA is large, the conductive adhesive CA can flow out from the notch portion 26k to the other side of the inner portion of the leaf spring 6 (connection plate portion 26h). Furthermore, it is possible to confirm whether or not the conductive adhesive CA is appropriately provided by confirming the notch portion 26k.
　なお、本発明は上記実施形態に限定されるものではなく、例えば次のように変形して実施することができ、これらの実施形態も本発明の技術的範囲に属する。 It should be noted that the present invention is not limited to the above-described embodiment, and can be implemented by being modified as follows, for example, and these embodiments also belong to the technical scope of the present invention.
　図１４は、本発明の第１実施形態に係わるレンズ駆動装置１０１の変形例について説明する図であって、図１４（ａ）は、変形例１及び変形例２の模式図であり、図１４（ｂ）は、変形例３及び変形例４の模式図であり、図１４（ｃ）は、変形例５及び変形例６の模式図である。図１５は、本発明の第１実施形態に係わるレンズ駆動装置１０１の変形例について説明する図であって、変形例７及び変形例８の模式図である。 FIG. 14 is a diagram for explaining a modification of the lens driving device 101 according to the first embodiment of the present invention. FIG. 14A is a schematic diagram of the modification 1 and the modification 2, and FIG. FIG. 14B is a schematic diagram of Modification 3 and Modification 4. FIG. 14C is a schematic diagram of Modification 5 and Modification 6. FIG. FIG. 15 is a diagram illustrating a modification of the lens driving device 101 according to the first embodiment of the present invention, and is a schematic diagram of Modification 7 and Modification 8.
　＜変形例１＞
　上記第１実施形態では、レンズ保持部材２の突堤部８２の形状を、開放部８２ｚ側が狭くなるような形状としたが、これに限るものではない。例えば、図１４（ａ）に示すような矩形状の突堤部Ｃ８２としても良い。その際には、開放部Ｃ８２ｚ側に新たな側壁部Ｃ８２ｗを設け、その側壁部Ｃ８２ｗを切り欠くことにより、開口の狭い開放部Ｃ８２ｚを設ける方が良い。 <Modification 1>
In the said 1st Embodiment, although the shape of the jetty part 82 of the lens holding member 2 was made into the shape where the open part 82z side becomes narrow, it is not restricted to this. For example, a rectangular jetty C82 as shown in FIG. In that case, it is better to provide a new side wall C82w on the side of the opening C82z, and to provide an opening C82z having a narrow opening by notching the side wall C82w.
　＜変形例２＞
　上記第１実施形態では、レンズ保持部材２の突堤部８２の側壁部８２ｗとして、好適に保持部７２（７２Ａ、７２Ｂ）の側壁を用いたが、これに限るものではない。例えば、図１４（ａ）に示すように、保持部７２側に新たな側壁部Ｃ８２ｘを設け、保持部７２も側壁部Ｃ８２ｘから離間した位置に設けても良い（変形例２）。 <Modification 2>
In the said 1st Embodiment, although the side wall of the holding part 72 (72A, 72B) was used suitably as the side wall part 82w of the jetty part 82 of the lens holding member 2, it is not restricted to this. For example, as shown to Fig.14 (a), the new side wall part C82x may be provided in the holding | maintenance part 72 side, and the holding part 72 may also be provided in the position spaced apart from the side wall part C82x (modification 2).
　＜変形例３＞
　上記第１実施形態では、収容部８２ｓとして略矩形状（平面視して）の形状に構成したが、これに限るものではない。例えば、図１４（ｂ）に示すような曲面状の突堤部Ｄ８２で囲まれた略円形状（楕円形状）の収容部Ｄ８２ｓであっても良い。 <Modification 3>
In the first embodiment, the accommodating portion 82s is configured in a substantially rectangular shape (in plan view), but is not limited thereto. For example, it may be a substantially circular (elliptical) accommodation portion D82s surrounded by a curved jetty D82 as shown in FIG.
　＜変形例４＞
　上記第１実施形態では、略矩形状の収容部８２ｓに隣接して保持部７２（７２Ａ、７２Ｂ）を配置する構成としたが、これに限るものではない。例えば、図１４（ｂ）に示すように、保持部Ｄ７２が収容部Ｄ８２ｓ側に一部入り込んだ配置であっても良い。この際には、収容部Ｄ８２ｓには、凹状部が形成されることとなるが、凹状部を有する収容部Ｄ８２ｓが保持部Ｄ７２と隣接した状態であるといえる。 <Modification 4>
In the first embodiment, the holding portion 72 (72A, 72B) is disposed adjacent to the substantially rectangular accommodating portion 82s. However, the present invention is not limited to this. For example, as shown in FIG. 14B, an arrangement in which the holding portion D72 partially enters the housing portion D82s side may be employed. At this time, a concave portion is formed in the accommodating portion D82s, but it can be said that the accommodating portion D82s having the concave portion is adjacent to the holding portion D72.
　＜変形例５＞
　上記第１実施形態では、壁部が切り欠かれた開放部８２ｚと隣接した収容部８２ｓであったが、これに限るものではない。例えば、図１４（ｃ）に示すように、環状に形成された突堤部Ｅ８２に囲まれた収容部Ｅ８２ｓであっても良い。 <Modification 5>
In the first embodiment, the accommodating portion 82s is adjacent to the open portion 82z in which the wall portion is cut out. However, the present invention is not limited to this. For example, as shown in FIG.14 (c), the accommodating part E82s enclosed by the jetty part E82 formed in cyclic | annular form may be sufficient.
　＜変形例６＞
　上記第１実施形態では、略矩形状の収容部８２ｓに隣接して保持部７２（７２Ａ、７２Ｂ）を配置する構成としたが、これに限るものではない。例えば、図１４（ｃ）に示すように、保持部Ｅ７２が収容部Ｅ８２ｓ内に配置されていても良い。このような形態も、保持部Ｅ７２が収容部Ｅ８２ｓの内側に隣接しているので、本発明においては、保持部Ｅ７２と収容部Ｅ８２ｓとが隣り合う位置に設けられているという概念に含まれるものとする。 <Modification 6>
In the first embodiment, the holding portion 72 (72A, 72B) is disposed adjacent to the substantially rectangular accommodating portion 82s. However, the present invention is not limited to this. For example, as shown in FIG. 14C, the holding portion E72 may be disposed in the housing portion E82s. Such a configuration is also included in the concept that the holding portion E72 and the accommodating portion E82s are provided at positions adjacent to each other because the holding portion E72 is adjacent to the inside of the accommodating portion E82s. And
　＜変形例７＞
　上記第１実施形態では、下側板ばね（２６Ａ、２６Ｂ）の接続板部２６ｈにおける切欠き部２６ｋの形状を、半円形状の形状としたが、これに限るものではない。例えば、図１５に示すような矩形状の切欠き部Ｃ２６ｋとしても良い。 <Modification 7>
In the first embodiment, the shape of the cutout portion 26k in the connection plate portion 26h of the lower leaf spring (26A, 26B) is a semicircular shape, but is not limited thereto. For example, a rectangular notch C26k as shown in FIG. 15 may be used.
　＜変形例８＞
　上記第１実施形態では、下側板ばね（２６Ａ、２６Ｂ）の接続板部２６ｈの貫通部２６ｔを両側から切り欠いた形状としたが、これに限るものではない。例えば、図１５に示すような矩形の穴形状の貫通部Ｃ２６ｔとしても良い。 <Modification 8>
In the said 1st Embodiment, although it was set as the shape which notched the penetration part 26t of the connection board part 26h of a lower leaf | plate spring (26A, 26B) from both sides, it does not restrict to this. For example, a through-hole C26t having a rectangular hole shape as shown in FIG. 15 may be used.
　＜変形例９＞
　上記第１実施形態では、保持部７２がレンズ保持部材２（鍔状部５２）の一端部から光軸方向ＪＤに突出する突出部から構成されていたが、これに限るものではない。例えば側方に突出する突出部でも良いし、突出させないフック部でも良い。 <Modification 9>
In the first embodiment, the holding portion 72 is configured by the protruding portion that protrudes from the one end portion of the lens holding member 2 (the hook-shaped portion 52) in the optical axis direction JD, but is not limited thereto. For example, the protrusion part which protrudes to the side may be sufficient, and the hook part which is not made to protrude may be sufficient.
　＜変形例１０＞
　上記第１実施形態では、下側板ばね（２６Ａ、２６Ｂ）を２つに分割して一対とし、コイル３の延在部３３（３３Ａ、３３Ｂ）のそれぞれと電気的に接続する構成としたが、これに限るものではない。例えば、手振れ補正機能付きのレンズ駆動装置では、上側板ばねを２つに分割して、コイル３の延在部３３（３３Ａ、３３Ｂ）のそれぞれと導電性接着剤ＣＡにより電気的に接続する構成でも良い。 <Modification 10>
In the first embodiment, the lower leaf springs (26A, 26B) are divided into two pairs to be electrically connected to each of the extending portions 33 (33A, 33B) of the coil 3, This is not a limitation. For example, in a lens driving device with a camera shake correction function, the upper leaf spring is divided into two and electrically connected to each of the extending portions 33 (33A, 33B) of the coil 3 by the conductive adhesive CA. But it ’s okay.
　本発明は上記実施の形態に限定されず、本発明の目的の範囲を逸脱しない限りにおいて適宜変更することが可能である。 The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the scope of the object of the present invention.
　　２　　　レンズ保持部材
　　３　　　コイル
　　５２　　鍔状部
　　５２ｋ　切欠部
　　６２　　弾性変形部
　　６２ｑ　薄肉部
　　６２ｒ　連結部
　　７２、７２Ａ、７２Ｂ、Ｄ７２、Ｄ７２　保持部
　　８２、Ｃ８２、Ｄ８２、Ｅ８２　突堤部
　　８２ｓ　収容部
　　８２ｚ　開放部
　　１３　　巻回部
　　３３、３３Ａ、３３Ｂ　延在部
　　３３ｃ　接続部
　　３３ｍ　巻き付け部
　　４　　　ヨーク
　　５　　　磁石
　　６　板ばね（２６Ａ、２６Ｂ　下側板ばね）
　　２６ｃ　第３部分（内側部分）
　　２６ｄ　第４部分（外側部分）
　　２６ｈ　接続板部（内側部分）
　　２６ｋ、Ｃ２６ｋ　切欠き部
　　２６ｔ、Ｃ２６ｔ　貫通部
　　ＭＫ　　駆動機構
　　ＲＧ　　固定側部材
　　ＣＡ　　導電性接着剤
　　ＪＤ　　光軸方向
　　１０１　レンズ駆動装置
                                                                                  2 Lens holding member 3 Coil 52 Cage-like part 52k Notch part 62 Elastic deformation part 62q Thin part 62r Connecting part 72, 72A, 72B, D72, D72 Holding part 82, C82, D82, E82 Jetty part 82s Housing part 82z Open part 13 Winding portion 33, 33A, 33B Extension portion 33c Connection portion 33m Winding portion 4 Yoke 5 Magnet 6 Leaf spring (26A, 26B lower leaf spring)
26c 3rd part (inner part)
26d Fourth part (outer part)
26h Connection plate (inner part)
26k, C26k Notch 26t, C26t Through-hole MK Drive mechanism RG Fixed side member CA Conductive adhesive JD Optical axis direction 101 Lens drive device

Claims (7)

  1. 　レンズ体を保持可能な筒状のレンズ保持部材と、
    内側部分及び外側部分を有するとともに、該レンズ保持部材に前記内側部分が固定され前記レンズ保持部材を光軸方向に移動可能に支持する板ばねと、
    該板ばねの前記外側部分が固定される固定側部材と、
    前記レンズ保持部材を光軸方向に沿って移動させる少なくとも磁石及びコイルを有して構成される駆動機構と、を備えたレンズ駆動装置において、
    　前記板ばねの前記内側部分は、前記レンズ保持部材の光軸方向における一端部に固定されており、
    　前記コイルは、前記レンズ保持部材の光軸方向における前記一端部と他端部との間の外周に導電性の線材が巻かれて形成された巻回部と、該巻回部の端部に繋がる延在部と、を有し、
    　前記レンズ保持部材の前記一端部には、前記内側部分と光軸方向において離間して対向する対向部と、前記延在部の一部が保持される保持部と、を有し、
    　前記対向部と前記内側部分との間に、前記延在部と前記内側部分とを電気的に接続する導電性接着剤が設けられていることを特徴とするレンズ駆動装置。     A cylindrical lens holding member capable of holding a lens body;
    A leaf spring having an inner portion and an outer portion, the inner portion being fixed to the lens holding member, and supporting the lens holding member so as to be movable in the optical axis direction;
    A fixed side member to which the outer portion of the leaf spring is fixed;
    A lens driving device comprising: a driving mechanism configured to include at least a magnet and a coil for moving the lens holding member along the optical axis direction;
    The inner part of the leaf spring is fixed to one end in the optical axis direction of the lens holding member,
    The coil includes a winding portion formed by winding a conductive wire around an outer periphery between the one end portion and the other end portion in the optical axis direction of the lens holding member, and an end portion of the winding portion. And an extending portion that is connected,
    The one end portion of the lens holding member has a facing portion that is spaced apart and opposed to the inner portion in the optical axis direction, and a holding portion that holds a part of the extending portion,
    A lens driving device characterized in that a conductive adhesive that electrically connects the extending portion and the inner portion is provided between the facing portion and the inner portion.
  2. 　前記延在部は、前記対向部と前記板ばねの前記内側部分との間に延在する接続部を有し、
    　該接続部が前記導電性接着剤に埋設されていることを特徴とする請求項１に記載のレンズ駆動装置。     The extending portion has a connecting portion extending between the facing portion and the inner portion of the leaf spring,
    The lens driving device according to claim 1, wherein the connecting portion is embedded in the conductive adhesive.
  3. 　前記対向部には、前記内側部分側へ突出する突堤部で形成された収容部が設けられており、該収容部に前記接続部を埋設する前記導電性接着剤が充填されていることを特徴とする請求項２に記載のレンズ駆動装置。 The facing portion is provided with a housing portion formed by a jetty portion protruding toward the inner portion side, and the housing portion is filled with the conductive adhesive that embeds the connecting portion. The lens driving device according to claim 2.
  4. 　前記突堤部は、前記収容部の周囲に設けられた壁部を有し、
    　前記突堤部の一方側には、前記保持部が設けられており、
    　前記保持部と離間した前記突堤部の他方側には、前記壁部が切り欠かれた開放部が形成されており、
    　該開放部に前記延在部が挿通されていることを特徴とする請求項３に記載のレンズ駆動装置。     The jetty portion has a wall portion provided around the accommodating portion,
    The holding part is provided on one side of the jetty part,
    On the other side of the jetty part that is separated from the holding part, an open part in which the wall part is cut out is formed,
    The lens driving device according to claim 3, wherein the extending portion is inserted into the opening portion.
  5. 　前記開放部と対向する位置における前記内側部分には、前記導電性接着剤が前記保持部から離れる方向へ移動するのを防止する貫通部が設けられていることを特徴とする請求項４に記載のレンズ駆動装置。 The penetration part which prevents that the said electrically conductive adhesive moves to the direction away from the said holding | maintenance part is provided in the said inner part in the position facing the said opening part, The Claim 4 characterized by the above-mentioned. Lens drive device.
  6. 　前記保持部は、前記収容部と隣り合う位置において、前記レンズ保持部材の前記一端部から前記突堤部と同じ方向へ突出する突出部からなり、
    　前記延在部は、前記突出部に巻き付けられる巻き付け部を有し、
    　該巻き付け部と前記内側部分との間に前記導電性接着剤が設けられていることを特徴とする請求項３ないし請求項５のいずれかに記載のレンズ駆動装置。     The holding portion is composed of a protruding portion that protrudes in the same direction as the jetty portion from the one end portion of the lens holding member at a position adjacent to the housing portion,
    The extending part has a winding part wound around the protruding part,
    The lens driving device according to claim 3, wherein the conductive adhesive is provided between the winding portion and the inner portion.
  7. 　前記内側部分は、前記収容部と対向する一面及び該一面と反対側の面である他面を有し、
    　前記突出部は、その先端が前記他面側に位置するように前記内側部分から突出しているとともに、前記巻き付け部は、前記収容部に対向して位置する前記内側部分の端面と隙間を有して対向するように設けられ、
    　前記端面側に位置する当該内側部分には、前記巻き付け部側が開放された切欠き部が形成されており、
    　前記切欠き部から前記導電性接着剤が露出していることを特徴とする請求項６に記載のレンズ駆動装置。     The inner portion has one surface facing the accommodating portion and the other surface that is a surface opposite to the one surface;
    The protruding portion protrudes from the inner portion such that a tip thereof is located on the other surface side, and the winding portion has a gap with an end surface of the inner portion positioned to face the accommodating portion. Are provided to face each other,
    The inner portion located on the end face side is formed with a notch portion in which the winding portion side is opened,
    The lens driving device according to claim 6, wherein the conductive adhesive is exposed from the notch.
PCT/JP2016/063079 2015-04-30 2016-04-26 Lens drive device WO2016175210A1 (en)

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