CN215264191U - Lens driving device and camera module - Google Patents

Abstract

The utility model provides a lens drive arrangement and camera module that lens keeps part to receive the damage when with coil and leaf spring soldering can be prevented. The lens driving device (101) is provided with a lens holding member (2), a coil (3), and a lower plate spring (26). A projection (72) projecting in a direction intersecting the optical axis direction is provided on the lens holding member (2). A part of the extension part (33) of the coil (3) is wound around the protrusion part (72) to form a winding part (33 m). The winding portion (33m) and the connecting plate portion (26h) are connected by solder. The protruding portion (72) around which the extension (33) is wound has an Exposed Portion (EP) whose surface is exposed. The connecting plate portion (26h) has a First Portion (FP) that is disposed so as to overlap the Exposed Portion (EP) in the optical axis direction, and a Second Portion (SP) that is disposed so as to overlap a portion of the wound portion (33m) in the optical axis direction.

Description

Lens driving device and camera module

Technical Field

The present disclosure relates to a lens driving device mounted on, for example, a portable device with a camera, and a camera module including the lens driving device.

Background

Conventionally, a lens driving device including a lens holding member and a coil disposed on an outer periphery of the lens holding member is known (see patent document 1). In this device, the lens holding member is held by a conductive plate spring so as to be movable in a direction parallel to the optical axis of the lens (hereinafter referred to as "optical axis direction"). Both ends of one wire rod constituting the coil are wound around a protruding portion provided so as to protrude from the lens holding member in a direction perpendicular to the optical axis direction, thereby constituting a wound portion (wound portion). The wound portion and the leaf spring are joined by soldering.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-024938

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

However, in the lens driving device described above, the tip end portion of the projection is exposed to the outside because the wire is not wound. Therefore, when the wound portion and the leaf spring are joined by soldering, there is a possibility that the tip portion is damaged by heat accompanying soldering, such as heat generated by a laser used in laser soldering or heat generated by an iron.

Therefore, it is desirable to provide a lens driving device capable of preventing the lens holding member from being damaged when the coil and the plate spring are bonded with solder.

Means for solving the problems

The utility model discloses a lens drive device of embodiment possesses: a support member; a lens holding member capable of holding a lens body; a coil formed of a conductive wire and held by the lens holding member; a magnet opposed to the coil; and a plate spring disposed so as to connect the support member and the lens holding member, and supporting the lens holding member to be movable in an optical axis direction, wherein the coil includes: a coil body portion disposed outside the lens holding member; and an extension portion connected to the coil main body portion, the plate spring having: a first support section fixed to the lens holding member; a second support part fixed to the support member; and an elastic arm portion provided between the first support portion and the second support portion, wherein the lens holding member is provided with a protruding portion protruding in a direction intersecting with an optical axis direction, a part of the extending portion of the coil is wound around the protruding portion to form a wound portion, the wound portion is connected to a connecting plate portion integrally provided in the first support portion by solder, and the protruding portion around which the extending portion is wound has an exposed portion whose surface is exposed,

the connecting plate portion has: a first portion arranged to overlap with the exposed portion in an optical axis direction; and a second portion arranged to overlap with a part of the winding portion in the optical axis direction.

The connecting plate portion may be connected to the first support portion via an elastically deformable arm portion.

The connecting plate portion may have a base portion connected to the arm portion and a pair of extending protruding portions connected to the base portion and facing each other so as to be separated from each other, and a concave portion formed by the base portion and the pair of extending protruding portions may be formed so as to open inward.

The first support portion may have a fixing portion fixed to the lens holding member, and the arm portion may be connected to the fixing portion.

The wound portion may have an opposing portion that opposes the connecting plate portion in the optical axis direction, and a non-opposing portion that does not oppose the connecting plate portion in the optical axis direction, and the solder may be provided so as to connect one surface of the connecting plate portion to the wound portion, and may be also disposed between the opposing portion and the other surface of the connecting plate portion that opposes the opposing portion.

The inner edge portion of the connecting plate portion may be configured to cross the plurality of wire portions constituting the winding portion.

The insulating cover layer may be removed from at least a portion of the winding portion that does not face the web portion.

The utility model discloses an embodiment's camera module has: the lens driving device described above; the lens body; and an imaging element facing the lens body.

Effect of the utility model

The lens driving device can prevent the lens holding member from being damaged when the coil and the plate spring are bonded by the solder.

Drawings

Fig. 1 is an exploded perspective view of a lens driving device.

Fig. 2 is a top perspective view and a front view of the lens driving device.

Fig. 3 is a plan view and a bottom view of the lens driving device.

Fig. 4 is an upper perspective view and a right side view of the lens driving device in a state where the spacer and the yoke are removed.

Fig. 5 is an upper perspective view of the lens holding member.

Fig. 6 is a lower perspective view of the lens holding member.

Fig. 7 is a plan view of the lens holding member.

Fig. 8 is a side view of the lens holding member.

Fig. 9 is an enlarged view of a part of the lens holding member.

Fig. 10 is a bottom view of the lens driving device with parts removed.

Fig. 11 is a plan view of the upper plate spring and a bottom view of the lower plate spring.

Fig. 12 is a diagram showing an example of the configuration of the base member.

Fig. 13 is a diagram showing a connection structure between a leaf spring and a coil in the lens driving device.

Fig. 14 is a diagram showing a connection structure between a leaf spring and a coil in the lens driving device.

Fig. 15 is a bottom view of the components constituting the connection structure.

Fig. 16 shows six different configuration examples of the connecting plate portion.

Fig. 17 is a bottom view of the lens holding member, the coil, and the lower plate spring.

Description of the reference numerals

1 spacer 2 lens holding member 2t projection 3 coil 4 yoke 4 outer wall portion 4B upper surface portion 4s receiving portion 5 magnet 6 terminal member 12 tubular portion 12d pedestal portion 12dh recess 12h eave portion 12j coil support portion 13 winding portion 16 upper side leaf spring 16B corner portion 16e outer portion 16g elastic arm 16i inner portion 16r envelope 18 base member 18k opening 18t projection 26 lower side leaf spring 26A first lower side leaf spring 26B second lower side leaf spring 26c inner engagement portion 26d outer engagement portion 26f fixed portion 26g elastic arm 26h connecting plate 26i inner portion 26p connecting plate 26u arm 33, 33A, 33B extension 33k insertion 33m winding portion 52 flange portion 52k notched portion 72, 72A, 72B … projection 101 … lens drive device AD1, AD2 … adhesive BP … base EL … extension projection MK … drive mechanism RG … stationary side member RS … recess SD …

Detailed Description

Hereinafter, a lens driving device 101 according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is an exploded perspective view of a lens driving device 101. Fig. 2 (a) is an upper perspective view of the lens driving device 101, and fig. 2 (B) is a front view of the lens driving device 101 as viewed from the Y2 side. Fig. 3 (a) is a plan view of the lens driving device 101, and fig. 3 (B) is a bottom view of the lens driving device 101. Fig. 4 (a) is an upper perspective view of the lens driving device 101 with the spacer 1 and the yoke 4 removed, and corresponds to fig. 2 (a). Fig. 4 (B) is a right side view of the lens driving device 101 with the spacer 1 and the yoke 4 removed.

As shown in fig. 1, the lens driving device 101 includes a lens holding member 2 capable of holding a lens body (not shown), a driving mechanism MK for moving the lens holding member 2 in the optical axis direction, a plate spring 6 for supporting the lens holding member 2 so as to be movable in the optical axis direction, a fixing-side member RG for fixing the plate spring 6, and a terminal member 7 for providing electrical connection to the outside. The lens body is, for example, a cylindrical lens barrel including at least one lens. The optical axis direction includes a direction of an optical axis JD associated with the lens body and a direction parallel to the optical axis JD.

As shown in fig. 1, the drive mechanism MK includes a coil 3 wound in an octagonal ring shape, a yoke 4 doubling as a rectangular box-shaped outer case, and two magnets 5 arranged to face both sides of the coil 3. Fixed-side member RG includes spacer 1, yoke 4, and base member 18 in which terminal member 7 is embedded. The plate spring 6 includes an upper plate spring 16 disposed between the lens holding member 2 and the yoke 4, and a lower plate spring 26 disposed between the lens holding member 2 and the base member 18. The lower leaf spring 26 includes a first lower leaf spring 26A and a second lower leaf spring 26B.

The lens driving device 101 has a substantially cubic outer shape, and is mounted on a substrate (not shown) on which an imaging element (not shown) is mounted. The substrate, the lens driving device 101, the lens body attached to the lens holding member 2, and the imaging element attached to the substrate so as to face the lens body constitute a camera module. The coil 3 is connected to a power supply via the lower plate spring 26, the terminal member 7, and the substrate. When a current flows in the coil 3, the driving mechanism MK generates an electromagnetic force in the optical axis direction.

The lens driving device 101 uses the electromagnetic force to move the lens holding member 2 in the optical axis direction on the Z1 side (subject side) of the imaging element, thereby realizing an auto focus adjustment function. Specifically, the lens driving device 101 can perform macro photography by moving the lens holding member 2 in a direction away from the image pickup device, and can perform infinity photography by moving the lens holding member 2 in a direction close to the image pickup device.

Next, the lens holding member 2 and the drive mechanism MK will be described. Fig. 5 (a) is an upper perspective view of the lens holding member 2, and fig. 5 (B) is an upper perspective view of the lens holding member 2 showing a state in which the coil 3 is wound around the lens holding member 2 of fig. 5 (a). Fig. 6 (a) is a lower perspective view of the lens holding member 2, and fig. 6 (B) is a lower perspective view of the lens holding member 2 showing a state in which the coil 3 is wound around the lens holding member 2 of fig. 6 (a). Fig. 7 (a) is a plan view of the lens holding member 2, and fig. 7 (B) is a plan view of the lens holding member 2 showing a state in which the coil 3 is wound around the lens holding member 2 of fig. 7 (a). Fig. 8 (a) is a right side view of the lens holding member 2 as viewed from the X1 side, and fig. 8 (B) is a right side view of the lens holding member 2 showing a state in which the coil 3 is wound around the lens holding member 2 shown in fig. 8 (a). Fig. 8 (C) is a left side view of the lens holding member 2 as viewed from the X2 side, and fig. 8 (D) is a left side view of the lens holding member 2 showing a state in which the coil 3 is wound around the lens holding member 2 shown in fig. 8 (C). Fig. 9 (a) is an enlarged view of the range R1 shown in fig. 8 (B), and fig. 9 (B) is an enlarged view of the range R2 shown in fig. 8 (D). Fig. 10 (a) is a bottom view of the lens driving device 101 with the terminal member 7 and the base member 18 removed, and fig. 10 (B) is a bottom view of the lens driving device 101 with the first lower leaf spring 26A, the second lower leaf spring 26B, and the lens holding member 2 further removed.

In the present embodiment, the lens holding member 2 is manufactured by injection molding a synthetic resin such as a Liquid Crystal Polymer (LCP). Specifically, as shown in fig. 5 a, the lens holding member 2 includes a cylindrical portion 12 formed to extend in the optical axis direction, and a flange portion (flange-like portion) 52 formed on the imaging element side (Z2 side) in the optical axis direction. In the present embodiment, approximately the upper half of the cylindrical portion 12 is formed in a substantially cylindrical shape.

The cylindrical portion 12 has a screw groove formed on an inner peripheral surface thereof to mount a lens body. Further, in the cylindrical portion 12, a pedestal portion 12d having two recesses 12dh on an end surface on the subject side is provided at two positions with the optical axis JD interposed therebetween. That is, the cylindrical portion 12 has four recesses 12 dh. As shown in fig. 4 (a), the inner portion 16i of the upper leaf spring 16 is placed on the base portion 12 d.

As shown in fig. 5 (a), a coil support portion 12j as an outer wall portion that supports the coil 3 from the inside is provided on the outer peripheral surface of the cylindrical portion 12. In the present embodiment, the coil support portion 12j has an octagonal outer shape in a plan view so as to be able to support the octagonal annular coil 3. On the subject side of the coil support portion 12j, eaves 12h (see also fig. 7 a) protruding radially outward so as to face the flange portion 52 in the optical axis direction are formed at four locations. As shown in fig. 5 (B), the coil 3 is wound around the outer peripheral surface of the lens holding member 2 in an octagon ring shape so as to be supported by the coil support portion 12j and sandwiched between the flange portion 12h and the flange portion 52 in the optical axis direction.

The flange portion 52 projects radially outward from the outer peripheral surface of the end portion of the cylindrical portion 12 on the imaging element side (Z2 side). The coil 3 is disposed on the subject side of the flange portion 52. As shown in fig. 6 (B), two notched portions 52k are formed in the flange portion 52 with the optical axis JD interposed therebetween. The extension 33, which is a part of the conductive wire material constituting the coil 3, passes through the notch 52 k. Specifically, the extension 33A, which is a part of the wire on the winding end side of the coil 3, passes through one of the notches 52k, and the extension 33B, which is a part of the wire on the winding start side of the coil 3, passes through the other of the notches 52 k. The edge of the flange 52 forming the notch 52k is curved. This is to prevent the wire constituting the coil 3 contacting the edge from being broken.

As shown in fig. 6a, the flange portion 52 includes six protruding portions 2t of a circular convex shape protruding downward (Z2 direction) from the imaging element side (Z2 side) and two protruding portions 72 of a square convex shape protruding outward in the radial direction.

As shown in fig. 6 (B), the protruding portion 72 includes a protruding portion 72A corresponding to the winding end side of the coil 3 (winding portion 13), and a protruding portion 72B corresponding to the winding start side of the coil 3. That is, both ends of the wire rod constituting the coil 3 are wound around the two protrusions 72 and held.

As shown in fig. 6 (a) and 10 (a), the protruding portions 2t include three protruding portions 2t corresponding to three through holes formed in the first lower plate spring 26A and three protruding portions 2t corresponding to three through holes formed in the second lower plate spring 26B. An inner portion 26i, which is a first support portion (movable-side support portion) of each of the first lower leaf spring 26A and the second lower leaf spring 26B, is attached to and fixed to the protruding portion 2 t. The inner portions 26i of the first lower leaf spring 26A and the second lower leaf spring 26B are fixed by heat caulking the protruding portions 2t inserted through the through holes formed in the inner portions 26 i. In fig. 6 (a) and 6 (B), the projecting portion 2t is illustrated in a state in which the tip end thereof is deformed after being heat-staked. The same applies to other drawings illustrating the projection portion 2 t.

Next, the driving mechanism MK of the lens driving device 101 will be described. As shown in fig. 10 (B), the drive mechanism MK includes a coil 3, a yoke 4, and two magnets 5 arranged to face two of the four side surfaces of the yoke 4, respectively. The driving mechanism MK generates a driving force (thrust) by the current flowing through the coil 3 and the magnetic field generated by the magnet 5, and moves the lens holding member 2 up and down in the optical axis direction.

As shown in fig. 6B, the coil 3 is formed by winding a conductive (metal) wire around the outer periphery of the lens holding member 2. Specifically, the coil 3 includes a winding portion 13 as a coil main body portion formed by winding in an octagonal ring shape, and an extending portion 33 extending from the winding portion 13 and wound around the protruding portion 72. For clarity, in fig. 6 (B), the winding portion 13 is not illustrated in a detailed state of winding the conductive wire material whose surface is covered with the insulating member. That is, the winding portion 13 is simplified and illustrated. The same applies to other drawings illustrating the winding portion 13.

The extending portion 33 includes an extending portion 33A that is continuous with an end portion (winding end portion) 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, and an extending portion 33B that is continuous with an end portion (winding start portion) of the winding portion 13 located on the inner peripheral side of the winding portion 13 on the winding start side of the coil 3.

Specifically, as shown in fig. 9 a, the extending portion 33A includes a winding portion 33m wound around the protruding portion 72A, and an insertion portion 33k inserted through the notch portion 52k and extending from the imaging element side (Z2 side) of the flange portion 52 toward the subject side (Z1 side). The protrusion 72A has a coming-off prevention portion ST that prevents the winding portion 33m from coming off. The stopper portion ST is configured to protrude downward from the front end of the protrusion portion 72A. However, the stopper ST may be configured to protrude in at least one of the left, right, upper, and lower directions.

As shown in fig. 9B, the extending portion 33B includes a winding portion 33m wound around the protruding portion 72B, and an insertion portion 33k inserted through the notch portion 52k and extending from the imaging element side (Z2 side) of the flange portion 52 to the subject side (Z1 side). The protrusion 72B has a coming-off prevention portion ST that prevents the winding portion 33m from coming off. The stopper portion ST is configured to protrude downward from the front end of the protrusion portion 72B.

In the present embodiment, the extension portion 33B is wound around the protrusion 72B of the lens holding member 2 before the wire material constituting the coil 3 is wound around the outer periphery of the lens holding member 2. In the example shown in fig. 9 (B), a part of the wire material constituting the coil 3 is wound three times around the projection 72B. Thereby, the winding portion 33m is formed on the protruding portion 72B, and a part of the extending portion 33B is held by the protruding portion 72B. However, the extension 33B may be wound around the outer periphery of the lens holding member 2 after the wire constituting the coil 3 is wound around the protrusion 72B.

After a part of the extension 33B is wound around the protrusion 72B, the remaining part of the wire material constituting the coil 3 is wound around the outer periphery of the lens holding member 2. At this time, as shown in fig. 9 (B), a part of the extending portion 33B extending from the winding portion 33m extends from the lower side of the flange portion 52 to the upper side of the flange portion 52 through the notch portion 52 k. At this time, the portion passing through the notch 52k constitutes the insertion portion 33k of the extension portion 33B.

As shown in fig. 5 (B), 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 periphery of the lens holding member 2. The winding portion 13 is fixed to the flange portion 52 on the subject side so as to be sandwiched between the flange portion 52 and the brim portion 12h in a state of being supported from the inside by the coil support portion 12j (see fig. 5 a). Further, since the inner peripheral surface of the winding portion 13 is isotropically supported in a well-balanced manner by the coil support portion 12j, the winding portion 13 is held by the lens holding member 2 in a state where the central axis of the coil 3 coincides with the central axis of the lens holding member 2. Therefore, the optical axis JD of the lens body held by the lens holding member 2 is configured to easily coincide with the central axes of the lens holding member 2 and the coil 3, respectively.

When winding of the linear material around the outer periphery of the lens holding member 2 is completed, the extending portion 33A connected to the end portion of the winding portion 13 on the winding completion side is drawn out from the object side of the flange portion 52 to the image pickup device side of the flange portion 52 via the notch portion 52k, as shown in fig. 9 (a). Specifically, the insertion portion 33k passes through the notch portion 52k, and the winding portion 33m is wound around the projection portion 72A of the lens holding member 2. In the example shown in fig. 9 (a), the extension portion 33A is wound three turns around the projection portion 72A.

Next, the yoke 4 constituting the drive mechanism MK will be described. In the present embodiment, the yoke 4 is produced by punching, drawing, or the like a plate material made of a soft magnetic material such as iron. Specifically, as shown in fig. 1, the yoke 4 has a box-like outer shape defining the housing portion 4 s. The yoke 4 has a rectangular cylindrical outer wall portion 4A and a flat plate-like rectangular ring-shaped upper surface portion 4B provided continuously to the upper end (end on the Z1 side) of the outer wall portion 4A. The yoke 4 configured as described above is configured to be a frame body together with the base member 18 by housing the coil 3 and the magnet 5 in the housing portion 4s as shown in fig. 10 (B) and being coupled to the base member 18 as shown in fig. 2. However, the yoke 4 may be replaced with a cover made of a non-magnetic body such as austenitic stainless steel.

Next, the magnet 5 constituting the drive mechanism MK will be described. As shown in fig. 1, the magnet 5 has a substantially cubic shape. As shown in fig. 10 (B), the two magnets 5 are located outside the coil 3 and are arranged along two opposing side surfaces out of the four side surfaces of the rectangular-cylindrical outer wall portion 4A constituting the yoke 4. Specifically, as shown in fig. 10 (a) and 10 (B), the two magnets 5 are arranged along two side surfaces other than the two side surfaces arranged to face the two protrusions 72, respectively. That is, the magnet 5 is not disposed to face the protrusion 72. The magnet 5 is fixed to the yoke 4 with an adhesive, and is disposed with an inner N-pole and an outer S-pole, for example. However, the magnet 5 may be arranged such that the inside is an S pole and the outside is an N pole.

Next, the leaf spring 6 and the fixed-side member RG will be described. Fig. 11 is a diagram showing a configuration example of the plate spring 6. Specifically, (a) of fig. 11 is a plan view of the upper leaf spring 16, and (B) of fig. 11 is a bottom view of the lower leaf spring 26. Fig. 12 is a diagram showing an example of the structure of base member 18 as stationary-side member RG. Specifically, (a) of fig. 12 is an upper perspective view of the base member 18 excluding the terminal member 7, (B) of fig. 12 is an upper perspective view of the terminal member 7 embedded in the base member 18, (C) of fig. 12 is an upper perspective view of the base member 18 including the terminal member 7, and (D) of fig. 12 is an upper perspective view of the base member 18 in a state where the first lower leaf spring 26A and the second lower leaf spring 26B are assembled.

The plate spring 6 is made of a metal plate mainly made of copper alloy. As shown in fig. 1, the plate spring 6 includes an upper plate spring 16 disposed between the lens holding member 2 and the yoke 4 (strictly, the spacer 1), and a lower plate spring 26 disposed between the lens holding member 2 and the base member 18. In a state where the lens holding member 2 and the plate spring 6 (the upper plate spring 16, the first lower plate spring 26A, and the second lower plate spring 26B) are combined, the plate spring 6 supports the lens holding member 2 so that the lens holding member 2 can move in the optical axis direction (Z-axis direction). The lower plate spring 26 also functions as a power supply member for supplying current to the coil 3. Therefore, the first lower plate spring 26A is electrically and mechanically connected to one end of the coil 3, and the second lower plate spring 26B is electrically and mechanically connected to the other end of the coil 3. The spacer 1 is disposed between the upper plate spring 16 and the yoke 4. The spacer 1 is disposed so as to prevent the lens holding member 2 from colliding with the yoke 4 when the lens holding member 2 moves in the Z1 direction. However, the spacer 1 may be omitted.

As shown in fig. 11 a, the upper plate spring 16 has a substantially rectangular ring shape, and includes two inner portions 16i as first support portions (movable side support portions) fixed to the lens holding member 2, one outer portion 16e as a second support portion (fixed side support portion) fixed to the fixed side member RG, and four elastic arm portions 16g located between the inner portion 16i and the outer portion 16 e. Specifically, outer portion 16e has four corner portions 16b, and four stack portions 16r connecting two of the four corner portions 16 b. The stack portion 16r is sandwiched by the spacer 1 and the magnet 5 and fixed with an adhesive. The spacer 1, the yoke 4, and the magnet 5 function as a fixed-side member RG.

As shown in fig. 4a, when the upper plate spring 16 is assembled to the lens driving device 101, the inner portion 16i is placed on the pedestal portion 12d of the lens holding member 2 (see fig. 5 a). The inner portion 16i is fixed to the lens holding member 2 with an adhesive AD1 (see fig. 4 (a)). As shown in fig. 4B, the outer portion 16e is in contact with the upper surface (surface on the Z1 side) of the magnet 5, and is sandwiched and fixed between the spacer 1 (not shown in fig. 4B) and the magnet 5.

As shown in fig. 11 (a), the upper leaf spring 16 is formed to be substantially bilaterally symmetrical. The upper plate spring 16 is fixed to the lens holding member 2 at an inner portion 16i, and is fixed to the yoke 4 at an outer portion 16e via the spacer 1. Therefore, the upper plate spring 16 can support the lens holding member 2 with good balance.

As shown in fig. 11 (B), the first lower leaf spring 26A and the second lower leaf spring 26B are configured such that the inner shapes thereof are substantially semicircular. The first lower leaf spring 26A and the second lower leaf spring 26B each include an inner portion 26i serving as a first support portion (movable side support portion) fixed to the lens holding member 2, an outer portion 26e serving as a second support portion (fixed side support portion) fixed to the fixed-side member RG, and an elastic arm portion 26g located between the inner portion 26i and the outer portion 26 e.

As shown in fig. 11 (B), the inner portion 26i of each of the first lower plate spring 26A and the second lower plate spring 26B includes three inner engaging portions 26c that engage with the protruding portions 2t of the lens holding member 2, two connecting portions 26p that connect the three inner engaging portions 26c, a fixing portion 26f that is fixed to the lens holding member 2 by an adhesive, a connecting plate portion 26h that faces the extending portion 33 of the coil 3, and an arm portion 26u that connects the connecting plate portion 26h and the fixing portion 26 f.

When the first lower plate spring 26A and the second lower plate spring 26B are assembled to the lens driving device 101, the six protruding portions 2t of the lens holding member 2 shown in fig. 6 (a) are inserted into the circular through holes provided in the inner joining portions 26c of the first lower plate spring 26A and the second lower plate spring 26B shown in fig. 11 (B). The inner joint portion 26c is fixed to the lens holding member 2 as shown in fig. 10 (a) by, for example, performing hot caulking or cold caulking on the projection portion 2 t. As shown in fig. 10 (a), the fixing portions 26f of the first lower leaf spring 26A and the second lower leaf spring 26B are fixed to the two lower mount portions 2p of the lens holding member 2 shown in fig. 6 (a) by an adhesive AD 2. Thereby, the inner portions 26i of the first lower plate spring 26A and the second lower plate spring 26B are positioned and fixed to the lens holding member 2.

As shown in fig. 11 (B), the outer portion 26e of the first lower leaf spring 26A includes an outer engagement portion 26d that engages with the base member 18. The through hole provided in the outer joining portion 26d of the first lower leaf spring 26A is fitted in the projection portion 18t (see fig. 12 a) provided on the upper surface of the base member 18. Thus, the outer portion 26e of the first lower leaf spring 26A is positioned and fixed to the base member 18 as shown in fig. 12 (D). The same applies to the second lower leaf spring 26B.

As shown in fig. 11 (B), the first lower leaf spring 26A and the second lower leaf spring 26B are formed in bilateral symmetry. The first lower plate spring 26A is connected to the lens holding member 2 at one fixing portion 26f and three inner engaging portions 26c, and is connected to the base member 18 at two outer engaging portions 26 d. The same applies to the second lower leaf spring 26B. With this configuration, the first lower plate spring 26A and the second lower plate spring 26B can support the lens holding member 2 in a state of being movable in the optical axis direction with good balance.

Next, the stationary-side member RG will be explained. The fixed-side member RG includes: a spacer 1, a yoke 4, and a magnet 5 that fix the upper plate spring 16; and a base member 18 to which the first lower plate spring 26A and the second lower plate spring 26B are fixed, respectively.

The base member 18 is manufactured by injection molding using synthetic resin such as liquid crystal polymer. In the present embodiment, as shown in fig. 12 (a), the base member 18 is a member having a rectangular plate-like outer shape, and a circular opening 18k is formed in the center. Six protruding portions 18t each having a circular convex shape and protruding upward are provided on the surface (upper surface) of the base member 18 on the subject side (Z1 side). The protruding portion 18t is inserted and fitted into a through hole provided in the outer engagement portion 26d of each of the first lower leaf spring 26A and the second lower leaf spring 26B. At this time, the projection 18t is fixed to the outer joint portion 26d by heat caulking. In fig. 12 (a) to 12 (D), the protruding portion 18t is shown in a state in which the tip end thereof is deformed after the thermal caulking. The projection 18t may be fixed to the outer joint portion 26d by cold caulking.

The terminal member 7 formed of a metal plate containing copper, iron, or an alloy containing these as a main component, as shown in fig. 12 (B), is insert-molded into the base member 18 and embedded therein. The terminal member 7 includes a first terminal member 7A to a third terminal member 7C, and as shown in fig. 12C, a part of each of the first terminal member 7A to the third terminal member 7C is exposed on the upper surface (surface on the Z1 side) of the base member 18. The first terminal member 7A and the second terminal member 7B, which are electrically insulated from each other, are electrically and mechanically connected to a substrate (not shown) on which an imaging element is mounted, respectively. As shown in fig. 12 (C) and 12 (D), the first terminal member 7A is electrically and mechanically connected to the first lower leaf spring 26A at the exposed portion 7AP, and the second terminal member 7B is electrically and mechanically connected to the second lower leaf spring 26B at the exposed portion 7 BP. The first lower plate spring 26A is electrically and mechanically connected to one end of the coil 3, and the second lower plate spring 26B is electrically and mechanically connected to the other end of the coil 3. Therefore, the coil 3 can receive the supply of current through the first terminal member 7A and the second terminal member 7B and the first lower leaf spring 26A and the second lower leaf spring 26B.

The third terminal part 7C includes four connection parts 7 CP. As shown in fig. 12 (C), the third terminal member 7C has four connecting portions 7CP exposed on the upper surface of the base member 18 so as to correspond to the lower ends of the four corners of the yoke 4. The base member 18 is positioned by combining the inner surface of the lower end portion of the outer wall portion 4A of the yoke 4 and the outer peripheral side surface of the base member 18, and then, as shown in fig. 2 (a), the connecting portions 7CP and the lower end portions of the four corners of the yoke 4 are welded and fixed to the yoke 4. The yoke 4 and the base part 18 may also be fixed at least partially with an adhesive.

Next, a connection structure between the coil 3 and the lower leaf spring 26 in the lens holding member 2 will be described with reference to fig. 13 to 15. Fig. 13 and 14 show a connection structure of the coil 3 and the lower leaf spring 26 in the lens holding member 2. Specifically, (a) of fig. 13 and (a) of fig. 14 are bottom views of the lens holding member 2, the coil 3, and the second lower leaf spring 26B, and correspond to an enlarged view of a range R3 shown in (a) of fig. 10. Fig. 13 (B) and 14 (B) are side views of the lens holding member 2, the coil 3, and the second lower leaf spring 26B when the connection structure shown in fig. 13 (a) and 14 (a) is viewed from the X2 side. Fig. 13 (a) and 13 (B) show a state before the coil 3 and the lower plate spring 26 are joined by the solder SD, and fig. 14 (a) and 14 (B) show a state after the coil 3 and the lower plate spring 26 are joined by the solder SD. In fig. 14 (a) and 14 (B), the solder SD is shown by cross hatching. Fig. 15 is a bottom view of the components constituting the connection structure. Specifically, (a) of fig. 15 is a bottom view of the protruding portion 72B. The protruding portion 72B shown in fig. 15 (a) corresponds to the protruding portion 72B shown in fig. 13 (a) and 14 (a). Fig. 15 (B) is a bottom view of the protruding portion 72B around which the extending portion 33B is wound. The protrusion 72B around which the extension 33B is wound shown in fig. 15 (B) corresponds to the protrusion 72B around which the extension 33B is wound shown in fig. 13 (a) and 14 (a). Fig. 15 (C) is a bottom view of the connecting plate portion 26 h. The web portion 26h shown in fig. 15 (C) corresponds to the web portion 26h in the inner portion 26i of the second lower leaf spring 26B shown in fig. 13 (a) and 14 (a).

Hereinafter, the relationship between the second lower leaf spring 26B, the lens holding member 2, and the coil 3 will be mainly described. However, the same description as that for the second lower leaf spring 26B applies to the first lower leaf spring 26A.

As shown in fig. 13 (a) and 13 (B), the connecting plate portion 26h of the second lower leaf spring 26B is disposed so as to face the protruding portion 72B of the lens holding member 2.

Specifically, as shown in fig. 15 (C), the connecting plate portion 26h includes: a first portion FP arranged to overlap the exposed portion EP of the protruding portion 72B in the optical axis direction; and a second portion SP disposed so as to overlap a part of the winding portion 33m of the extension portion 33B of the coil 3 in the optical axis direction. Fig. 15 (C) shows the first portion FP by cross-hatching and the second portion SP by cross-hatching.

The exposed portion EP of the projection 72B is a portion of the projection 72B around which the extension 33B is wound, the portion having an exposed surface, that is, the portion around which the extension 33B is not wound. The exposed portion EP includes a tip portion of the protrusion 72B in which the stopper portion ST (see fig. 9B) is formed. Fig. 15 (a) shows the exposed portion EP by hatching with diagonal lines, and shows the covered portion CP, which is a portion around which the extending portion 33B is wound, by hatching with cross hatching.

As shown in fig. 15 (B), a winding portion 33m is formed in the extension portion 33B wound around the projection portion 72B. Specifically, the winding portion 33m is formed to have an opposing portion FC which faces the connecting plate portion 26h in the optical axis direction and a non-opposing portion NF which does not face the connecting plate portion 26h in the optical axis direction. In fig. 15, (B) shows the facing portion FC by hatching and the non-facing portion NF by hatching. The opposing portion FC corresponds to the second portion SP of the web portion 26 h.

As shown in fig. 15 (C), the connecting plate portion 26h includes a base portion BP connected to the arm portion 26u, and a pair of extending protruding portions EL connected to the base portion BP and facing each other while being spaced apart from each other. The arm portion 26u is formed in an L-shape, and the base portion BP extends toward the Y2 side so as to be continuous with the arm portion 26 u. The pair of extension projections EL are constituted by a first extension projection EL1 connected to the Y2 side portion (front end portion) of the base BP, and a second extension projection EL2 connected to the Y1 side portion (base end portion) of the base BP. The recess RS formed by the base BP and the pair of extended projections EL is formed so as to open toward the side close to the optical axis JD, i.e., toward the inside. Thus, the connecting plate portion 26h has a substantially U-shape as a whole.

As shown in fig. 13 (a), the inner edge PH of the recess RS is configured to cross the wire material portion WP constituting the winding portion 33 m. Specifically, the inner edge portion PH is configured to cross at least two of the plurality of wire portions WP constituting the winding portion 33 m. In the example shown in fig. 13 (a), the inner edge portion PH is configured to cross the three wire portions WP constituting the three-turn winding portion 33m, i.e., the first wire portion WP1 to the third wire portion WP 3.

As shown in fig. 14 (a) and 14 (B), the second lower leaf spring 26B and the extension portion 33B of the coil 3 are electrically and mechanically connected by solder SD. Specifically, the projection portion 2t of the lens holding member 2 is heat-staked, and after the fixing portion 26f of the second lower leaf spring 26B is fixed to the lower stage portion 2p of the lens holding member 2, solder paste is applied so as to contact both the winding portion 33m and the connecting plate portion 26h of the extension portion 33B. Solder paste is also called cream solder.

In the present embodiment, the solder paste is applied so as to contact at least the bottom surface (surface on the Z2 side) of the second portion SP (see fig. 15 (C)) of the connecting plate portion 26h and the non-opposing portion NF (see fig. 15 (B)) of the winding portion 33 m.

The solder paste is preferably applied so as to be also positioned between the upper surface (surface on the Z1 side) of the web portion 26h and the facing portion FC (see fig. 15B) of the winding portion 33 m. The solder paste may contact the bottom surface (surface on the Z2 side) of the first portion FP (see fig. 15C) of the connecting plate portion 26 h.

Thereafter, the solder paste is heated and melted by a soldering iron, a laser, or the like, and the second lower leaf spring 26B and the extension portion 33B are joined by the solder SD. The application of the solder paste to the bonding with the solder SD is performed in a state where the lens holding member 2 is upside down, that is, in a state where the end surface of the lens holding member 2 on the Z2 side is directed vertically upward. Therefore, the solder paste melted by the soldering iron, the laser, or the like can be appropriately held at a desired position even when it has fluidity.

Next, another configuration example of the connecting plate portion 26h will be described with reference to fig. 16. Fig. 16 shows six different configuration examples of the web portion 26 h.

The web 26h shown in fig. 16 (a) differs from the web 26h shown in fig. 15 (C) in that the length L1 of the recess RS is relatively short.

The web 26H shown in fig. 16 (B) differs from the web 26H shown in fig. 15 (C) in that an oblong through hole H1 is formed in the second portion SP. The through hole H1 may be one or more circular holes, one or more square holes, or a combination thereof.

The web portion 26h shown in fig. 16 (C) is different from the web portion 26h shown in fig. 15 (C) in that the length L2, which is the width dimension of the second extending protrusion EL2, is relatively long.

The web portion 26h shown in fig. 16 (D) differs from the web portion 26h shown in fig. 15 (C) in that the width W1 of the base portion BP is relatively narrow. In the example shown in fig. 16 (D), the tip of the protruding portion 72B does not overlap the connecting plate portion 26h in the optical axis direction. That is, the protruding portion 72B protrudes further toward the X2 side than the web portion 26 h. Thus, the exposed portion EP of the protruding portion 72B does not need to be entirely covered by the connecting plate portion 26h, and the portion of the exposed portion EP adjacent to the covering portion CP (the winding portion 33m) may be covered by the base portion BP of the connecting plate portion 26 h.

The web portion 26h shown in fig. 16 (E) differs from the web portion 26h shown in fig. 15 (C) in that the first extending protrusion EL1 is omitted. The web portion 26h may have the first extending protrusion EL1 and omit the second extending protrusion EL 2.

The web 26h shown in fig. 16 (F) differs from the web 26h shown in fig. 15 (C) in that it has a recess RS that opens toward the Y1 side. The web portion 26h may have a recess that opens toward the Y2 side.

Next, an example of a method of bonding the coil 3 and the lower plate spring 26 with the solder SD, which is a part of the manufacturing method of the lens driving device 101, will be described with reference to fig. 17 (a) to 17 (C). Fig. 17 (a) to 17 (C) are bottom views of the lens holding member 2, the coil 3, and the lower plate spring 26, and correspond to enlarged views of a range R3 shown in fig. 10 (a). Specifically, (a) of fig. 17 shows a state before the solder paste SDP is applied. Fig. 17 (B) shows a state after the solder paste SDP is applied and before the solder paste SDP is melted by heating. Fig. 17 (C) shows a state in which the solder paste SDP after being melted by heating is solidified.

In the present embodiment, the surface of the wire constituting the extension portion 33B is covered with an insulating member. Therefore, as shown in fig. 17 (a), before the non-opposing portion NF of the winding portion 33m is coated with the solder paste SDP, the insulating coating layer on the surface of the wire rod constituting the non-opposing portion NF is removed by laser irradiation. Fig. 17 (a) shows an irradiation range LS, which is a range irradiated with the laser light, by hatching with oblique lines.

The removal of the insulating cover layer by the laser beam can omit a step of mechanically removing the insulating cover layer or a step of removing the insulating cover layer using a chemical, and thus can shorten the time taken to manufacture the lens driving device 101 and can reduce the manufacturing cost of the lens driving device 101. However, the insulating coating layer in the wire material constituting the winding portion 33m may be removed mechanically or by using a chemical.

As shown in fig. 17 (a), the irradiation range LS of the laser light is set so as not to contact the bottom face BF of the protruding portion 72B. Therefore, as shown in fig. 17 (a), the irradiation range LS of the laser light may be set to be in contact with a part of the connecting plate portion 26 h. This setting makes it possible to remove the insulating coating layer in the non-opposed portion NF of the winding portion 33m and prevent the bottom face BF of the protruding portion 72B from being burned by laser irradiation. In addition, this setting can prevent the generation of foreign matter such as coal by preventing the bottom face BF from being burned. In addition, the configuration in which the exposed portion EP of the protruding portion 72B is covered with the connecting plate portion 26h can alleviate the setting accuracy of the irradiation range LS of the laser light, and can improve the stability of the bonding by the solder SD at the time of mass production of the lens driving device 101. This is because the exposed portion EP is not irradiated with the laser light even if the irradiation range of the laser light is slightly deviated from the desired range.

Thereafter, as shown in fig. 17 (B), a solder paste SDP is applied so as to be in contact with the winding portion 33m of the extension portion 33B and the connecting plate portion 26h, respectively. Fig. 17 (B) shows a solder paste SDP by dot hatching.

In the present embodiment, the solder paste SDP is applied by a solder applying apparatus. Specifically, the solder paste SDP is applied so as to cover the inner edge portion PH (see fig. 13 a), that is, so as to contact the first wire portion WP1 to the third wire portion WP3 (see fig. 13 a) constituting the three-turn winding portion 33 m.

The solder paste is preferably applied so as to be also positioned between the upper surface (surface on the Z1 side) of the connecting plate portion 26h and the opposing portion FC (see fig. 15B) of the winding portion 33 m.

Then, the solder paste SDP heated and melted by the irradiation of the laser light is solidified as shown in fig. 17 (C) to form the solder SD. The irradiation range of the laser beam in this case may be the same as the irradiation range LS of the laser beam for removing the insulating coating layer in the non-opposed portion NF of the winding portion 33m, for example.

As described above, the lens driving device 101 according to the embodiment of the present invention includes: support members such as a fixed-side member RG; a lens holding member 2 capable of holding a lens body; a coil 3 formed of a conductive wire material and held by the lens holding member 2; a magnet 5 opposed to the coil 3; and a plate spring 6 disposed so as to connect the support member and the lens holding member 2, and supporting the lens holding member 2 so as to be movable in the optical axis direction. The coil 3 includes a winding portion 13 as a coil main body portion disposed outside the lens holding member 2, and an extension portion 33 connected to the winding portion 13. The leaf spring 6 comprises a lower leaf spring 26. The lower leaf spring 26 has: an inner portion 26i as a first support portion fixed to the lens holding member 2; an outer portion 26e as a second support portion fixed to the base member 18; and an elastic arm portion 26g provided between the inner portion 26i and the outer portion 26 e. The lens holding member 2 is provided with a protruding portion 72 protruding in a direction intersecting the optical axis direction. A part of the extending portion 33 of the coil 3 is wound around the protruding portion 72 to form a wound portion 33 m. The winding portion 33m and the connecting plate portion 26h integrally provided in the inner portion 26i are connected by the solder SD. The projection 72 around which the extension 33 is wound has an exposed portion EP with its surface exposed. The web 26h further includes: a first portion FP disposed so as to overlap the exposed portion EP in the optical axis direction; and a second portion SP disposed so as to overlap a part of the winding portion 33m in the optical axis direction.

With this configuration, the lens driving device 101 can prevent the lens holding member 2 from being damaged by heat when the coil 3 and the lower plate spring 26 are soldered. This is because the connecting plate portion 26h is disposed so as to cover the exposed portion EP of the protruding portion 72, that is, the exposed portion EP of the protruding portion 72 is protected by the connecting plate portion 26h and is not affected by heat accompanying soldering such as heat generated by laser light or heat generated by soldering iron.

For example, as shown in fig. 11 (B), the connecting plate portion 26h may be connected to an inner portion 26i as the first support portion via an elastically deformable arm portion 26 u.

This configuration can suppress solder separation between the bonding coil 3 and the lower plate spring 26 when the lens holding member 2 is accidentally moved by a strong impact due to dropping or the like. This is because a part of the impact is absorbed by the arm portion 26 u.

For example, as shown in fig. 15 (C), the connecting plate portion 26h may have a base portion BP connected to the arm portion 26u and a pair of extending protruding portions EL connected to the base portion BP and facing each other while being spaced apart from each other. That is, the connecting plate 26h may have a U-shape. In this case, the recess RS formed by the base BP and the pair of extended projections EL may be formed so as to open toward the inner side (X1 side) where the optical axis JD is located.

With this configuration, the designer of the lens drive apparatus 101 can increase the length of the arm portion 26 u. This is because the designer can place the base portion BP, which is the portion to which the arm portion 26u is connected, outside the pair of extended protruding portions EL.

For example, as shown in fig. 11 (B), the inner portion 26i as the first support portion may have a fixing portion 26f fixed to the lens holding member 2. In this configuration, the arm portion 26u is connected to the fixed portion 26 f. Specifically, the root or the vicinity of the root of the arm portion 26u is connected to the fixed portion 26 f.

In this configuration, the position of the connecting plate portion 26h with respect to the wound portion 33m in the protruding portion 72 is easily determined, as compared with the case where the fixing portion 26f is not provided, that is, the case where the portion of the inside portion 26i that is continuous with the root portion or the vicinity of the root portion of the arm portion 26u is not fixed to the lens holding member 2. Therefore, the joint between the winding portion 33m and the connecting plate portion 26h by the solder SD can be performed more appropriately. This is because the movable range of the connecting plate portion 26h is narrowed by fixing the lower plate spring 26 to the lens holding member 2 with the fixing portion 26f located closer to the connecting plate portion 26h than the inner engaging portion 26 c.

For example, as shown in fig. 15 (B), the winding portion 33m may have an opposing portion FC that faces the connecting plate portion 26h in the optical axis direction and a non-opposing portion NF that does not face the connecting plate portion 26h in the optical axis direction. In this case, as shown in fig. 14 a, for example, the solder SD is provided so as to connect one surface (surface on the Z2 side) of the connecting plate portion 26h to the winding portion 33m, and is also arranged between the other surface (surface on the Z1 side) of the connecting plate portion 26h facing the facing portion FC and the facing portion FC. Fig. 14 (B) shows a part SD1 of the solder SD disposed between the other surface (surface on the Z1 side) of the connecting plate portion 26h and the opposing portion FC.

This configuration can improve the bonding strength between the web portion 26h and the winding portion 33m by the solder SD.

For example, as shown in fig. 13 a, the inner edge portion PH of the connecting plate portion 26h may be configured to cross the plurality of wire portions WP (the first wire portion WP1 to the third wire portion WP3) constituting the winding portion 33 m.

In this configuration, by disposing the solder SD between each of the plurality of wire members and the connecting plate portion 26h, the reliability of the conductive connection between the connecting plate portion 26h and the winding portion 33m by the solder SD can be improved.

The winding portion 33m preferably removes the insulating cover layer at least in the non-opposing portion NF. The removal of the insulating cover layer is achieved, for example, by irradiating laser light.

This configuration can improve the reliability of the conductive connection by the solder SD between the connecting plate portion 26h and the winding portion 33 m.

For example, as shown in fig. 17 (a), the method of manufacturing the lens driving device 101 according to the embodiment of the present invention includes a step of irradiating the non-facing portion NF with a laser beam to peel off the insulating coating layer of the non-facing portion NF.

The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments. The above-described embodiments can be applied to various modifications, replacements, and the like without departing from the scope of the present invention. The features described with reference to the above embodiments may be combined as appropriate as long as they are not technically contradictory.

For example, in the above-described embodiment, the protruding portion 72 is configured to protrude from one end portion of the lens holding member 2 (the flange portion 52) in the direction perpendicular to the optical axis direction, but the present invention is not limited to this configuration. The protruding portion 72 may protrude in a direction inclined with respect to the optical axis direction, for example.

In the above-described embodiment that realizes the automatic focus adjustment function, the following configuration is adopted: the first lower leaf spring 26A is electrically and mechanically connected to the extension portion 33A, and the second lower leaf spring 26B is electrically and mechanically connected to the extension portion 33B, but the present invention is not limited to this configuration. The utility model discloses for example in the lens drive arrangement of area shake correction function, also can include following constitution: the upper leaf spring 16 is divided into two parts, one of which is electrically and mechanically connected to the extending portion 33A, and the other of which is electrically and mechanically connected to the extending portion 33B. In this configuration, the upper plate spring 16 is disposed so as to connect the magnet holder as the support member to the lens holding member 2, and is configured to support the lens holding member 2 so as to be movable in the optical axis direction. In this case, the upper leaf spring 16 includes: an inner portion 16i as a first support portion fixed to the lens holding member 2; an outer portion 16e as a second support portion fixed to the magnet holder; and an elastic arm portion 16g located between the inner portion 16i and the outer portion 16 e. The magnet holder is a member that holds the magnet 5 facing the coil 3 held by the lens holding member 2, and is typically connected to the base member 18 via a suspension wire, and is supported by the suspension wire so as to be movable in a direction perpendicular to the optical axis direction. Specifically, the magnet holder is configured to be movable in a direction perpendicular to the optical axis direction by a drive mechanism including the magnet 5 and a coil different from the coil 3 provided on the base member 18 so as to face the magnet 5. In this configuration, a flange portion having a notch portion may be provided on the upper end side (Z1 side) of the lens holding member 2. The projecting portion 72 as a projecting portion is provided so as to project in a direction perpendicular to the optical axis direction from an upper end portion, which is one end portion in the optical axis direction of the lens holding member 2 on which the upper leaf spring 16 is disposed.

In the above embodiment, the coil 3 is wound in an octagonal ring shape on the outer peripheral surface side of the lens holding member 2. However, the present invention is not limited to this configuration. The coil 3 may be a coil having an oblong or elliptical (oval) coil body held on the side surface of the lens holding member 2, that is, a coil body whose central axis is arranged perpendicular to the optical axis direction. Specifically, the coil 3 may be a coil having four oval coil bodies respectively held on four side surfaces of the lens holding member 2 including the coil support portion 12j having a substantially rectangular outer shape in plan view, or may be a coil having two oval coil bodies respectively held on two opposing side surfaces of the four side surfaces of the lens holding member 2.

Claims (12)

1. A lens driving device is provided with:

a support member;

a lens holding member capable of holding a lens body;

a coil formed of a conductive wire and held by the lens holding member;

a magnet opposed to the coil; and

a plate spring disposed so as to connect the support member and the lens holding member and supporting the lens holding member to be movable in an optical axis direction, wherein in the lens driving device,

the coil has: a coil body portion disposed outside the lens holding member; and an extension part connected with the coil main body part,

the plate spring has: a first support section fixed to the lens holding member; a second support part fixed to the support member; and an elastic arm portion provided between the first support portion and the second support portion,

the lens holding member is provided with a projection portion projecting in a direction intersecting the optical axis direction,

a part of the extension portion of the coil is wound around the protrusion portion to form a winding portion,

the winding part is connected with a connecting plate part integrally arranged on the first supporting part by welding material,

the protruding portion around which the extending portion is wound has an exposed portion whose surface is exposed,

the connecting plate portion has: a first portion arranged to overlap with the exposed portion in an optical axis direction; and a second portion arranged to overlap with a part of the winding portion in the optical axis direction.

2. The lens driving apparatus as claimed in claim 1,

the connecting plate portion is connected to the first support portion via an elastically deformable arm portion.

3. The lens driving apparatus according to claim 2,

the connecting plate portion has a base portion connected to the arm portion and a pair of extending projections connected to the base portion and opposed to each other while being separated from each other,

the concave portion formed by the base portion and the pair of extending protruding portions is formed so as to open inward.

4. The lens driving apparatus according to claim 2,

the first support portion has a fixing portion fixed to the lens holding member,

the arm portion is connected to the fixed portion.

5. The lens driving apparatus according to claim 3,

the first support portion has a fixing portion fixed to the lens holding member,

the arm portion is connected to the fixed portion.

6. The lens driving apparatus according to any one of claims 1 to 5,

the winding portion has an opposing portion that opposes the connecting plate portion in the optical axis direction and a non-opposing portion that does not oppose the connecting plate portion in the optical axis direction,

the solder is provided so as to connect one surface of the connecting plate portion and the winding portion, and is also arranged between the other surface of the connecting plate portion facing the facing portion and the facing portion.

7. The lens driving apparatus according to any one of claims 1 to 5,

the inner edge portion of the connecting plate portion is configured to cross the plurality of wire portions constituting the winding portion.

8. The lens driving apparatus as claimed in claim 6,

the inner edge portion of the connecting plate portion is configured to cross the plurality of wire portions constituting the winding portion.

9. The lens driving apparatus according to any one of claims 1 to 5,

the winding portion is removed of the insulating cover layer at least at a portion not opposed to the connecting plate portion.

10. The lens driving apparatus as claimed in claim 6,

the winding portion is removed of the insulating cover layer at least at a portion not opposed to the connecting plate portion.

11. The lens driving apparatus as claimed in claim 8,

the winding portion is removed of the insulating cover layer at least at a portion not opposed to the connecting plate portion.

12. A camera module, comprising:

the lens driving device according to any one of claims 1 to 11;

the lens body; and

and an imaging element facing the lens body.

Images