Lens driving device and camera module

Abstract

The present invention provides a lens driving device and a camera module that more reliably prevent the positional displacement of a metal component when the metal component is mounted on a base component. The lens driving device (101) comprises a base component (18), a lens holding component (2) supported to be movable relative to the base component, a fixed side metal component (5F) mounted on the base component, and a shape memory alloy wire (SA) having one end fixedly adhered to the fixed side metal component and configured to move the lens holding component by shrinking in response to a temperature rise. The base component has a protrusion (18V), and the fixed side metal component has a through hole (RH). The fixed side metal component is mounted on the base component in a state where the protrusion is engaged with the through hole, and is fixed to the base component using a photocurable adhesive (EA) configured to extend from the surface around the through hole to the outer side surface of the protrusion.

Description

Technical Field

[0001] The present disclosure relates to a lens driving device. Background Art

[0002] In the past, a lens driving device using two shape memory alloy wires is known (see Patent Document 1). In this lens driving device, the ends of the two shape memory alloy wires are fixed to separate metal parts. That is, four metal parts are used to mount the two shape memory alloy wires on the base part. In addition, two metal parts are mounted on a protrusion of one of the four corners of the rectangular frame-shaped base part, and the remaining two metal parts are mounted on another protrusion of another of the four corners of the rectangular frame-shaped base part. In addition, each metal part is mounted on the base part by heat riveting a part of the base part.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: U.S. Patent Application Publication No. 2010 / 0074607 Summary of the invention

[0006] Problems that the invention will solve

[0007] However, there is a concern that the heat during heat caulking may cause the shape memory alloy wire fixed to the metal component to shrink. In addition, there is a concern that the shrinkage of the shape memory alloy wire may cause positional displacement of the metal component when the metal component is attached to the base component.

[0008] Therefore, it is desirable to provide a lens driving device that can more reliably prevent positional deviation of a metal member when the metal member is mounted on a base member.

[0009] Means for solving problems

[0010] A lens driving device according to one embodiment of the present invention comprises: a base component as a fixed side component; a lens holding component as a movable side component, which is supported to be movable relative to the base component; a terminal board, which is mounted on the base component; and a shape memory actuator, one end of which is fixedly adhered to the terminal board and is configured to move the lens holding component by shrinking in response to a temperature rise, wherein the base component has a protrusion, the terminal board has a through hole, the terminal board is mounted on the base component in a state where the protrusion is engaged with the through hole, and is fixed to the base component using a photocurable adhesive that is configured to extend from the surface around the through hole to the outer side surface of the protrusion.

[0011] Effects of the Invention

[0012] The lens driving device described above can more reliably prevent positional deviation of the metal member when the metal member is mounted on the base member. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view of a lens driving device.

[0014] Figure 2 It is an exploded perspective view of the lens driving device.

[0015] Figure 3 It is a perspective view of metal parts respectively connected to the lens holding part and the base part.

[0016] Figure 4 This is a diagram of a metal component to which a shape memory alloy wire is mounted.

[0017] Figure 5 It is a three-dimensional diagram of the base component.

[0018] Figure 6 It is a diagram showing the positional relationship among the leaf spring, the shape memory alloy wire, the metal member, and the conductive member.

[0019] Figure 7 This is a diagram showing an example of the path of the current flowing through the shape memory alloy wire.

[0020] Figure 8 This is a diagram showing an example of a connection structure for connecting a fixed-side metal member and a conductive member.

[0021] Fig. 9 is a perspective view of another example of the base member.

[0022] Fig.10 This is a perspective view of another example of the lens holding component.

[0023] Fig.11 This is a diagram showing another example of the positional relationship among the leaf spring, the shape memory alloy wire, the metal member, and the conductive member.

[0024] Fig.12 FIG. 1 is a diagram showing another example of the path of the current flowing through the shape memory alloy wire.

[0025] Fig.13 This is a diagram showing another example of a connection structure for connecting a fixed-side metal member and a conductive member.

[0026] Fig.14 This is a diagram showing another example of a connection structure for connecting a fixed-side metal member and a conductive member.

[0027] Fig.15This is a diagram showing another example of a connection structure for connecting a fixed-side metal member and a conductive member.

[0028] Fig.16 This is a diagram showing an example of a connection structure related to metal parts.

[0029] Fig.17 This is a diagram showing an example of a connection structure for connecting a fixed-side metal member and a base member.

[0030] Fig.18 This is a diagram showing an example of a connection structure for connecting a fixed-side metal member and a base member. DETAILED DESCRIPTION

[0031] Hereinafter, a lens driving device 101 according to an embodiment of the present invention will be described with reference to the drawings. Figure 1 is a perspective view of the lens driving device 101. Specifically, Figure 1 (A) is a top perspective view of the lens driving device 101. Figure 1 (B) is a bottom perspective view of the lens driving device 101 . Figure 2 It is an exploded perspective view of the lens driving device 101 .

[0032] exist Figure 1 as well as Figure 2 In , X1 represents one direction of the X axis constituting the three-dimensional orthogonal coordinate system, and X2 represents the other direction of the X axis. In addition, Y1 represents one direction of the Y axis constituting the three-dimensional orthogonal coordinate system, and Y2 represents the other direction of the Y axis. Similarly, Z1 represents one direction of the Z axis constituting the three-dimensional orthogonal coordinate system, and Z2 represents the other direction of the Z axis. Figure 1 as well as Figure 2 In the figure, the X1 side of the lens driving device 101 corresponds to the front side (front side) of the lens driving device 101, and the X2 side of the lens driving device 101 corresponds to the rear side (back side) of the lens driving device 101. In addition, the Y1 side of the lens driving device 101 corresponds to the right side of the lens driving device 101, and the Y2 side of the lens driving device 101 corresponds to the left side of the lens driving device 101. In addition, the Z1 side of the lens driving device 101 corresponds to the upper side (subject side) of the lens driving device 101, and the Z2 side of the lens driving device 101 corresponds to the lower side (photographing element side) of the lens driving device 101. The same is true in other figures.

[0033] The lens driving device 101 is as follows Figure 1 as well as Figure 2 As shown, the cover member 4 is included as a part of the fixed side member RG. The cover member 4 includes an upper cover member 4U and a lower cover member 4L.

[0034] The cover member 4 is configured to function as a shell covering each member. In the present embodiment, the cover member 4 is formed of a non-magnetic metal. However, the cover member 4 may also be formed of a magnetic metal. Figure 1 As shown, it has a box-shaped outer shape that defines the storage portion 4s.

[0035] The upper cover part 4U has a rectangular cylindrical first outer wall portion 4A and a rectangular ring-shaped and flat top plate portion 4B which is continuous with the upper end (end on the Z1 side) of the first outer wall portion 4A. A circular opening 4k is formed in the center of the top plate portion 4B. The first outer wall portion 4A includes a first side plate portion 4A1 to a fourth side plate portion 4A4. The first side plate portion 4A1 and the third side plate portion 4A3 are opposite to each other, and the second side plate portion 4A2 and the fourth side plate portion 4A4 are opposite to each other. Moreover, the first side plate portion 4A1 and the third side plate portion 4A3 extend perpendicularly to the second side plate portion 4A2 and the fourth side plate portion 4A4.

[0036] Similarly, the lower cover part 4L has a second outer peripheral wall portion 4C in the shape of a rectangular tube and a bottom plate portion 4D in the shape of a rectangular ring and a flat plate which is continuous with the lower end (the end on the Z2 side) of the second outer peripheral wall portion 4C. A circular opening 4m is formed in the center of the bottom plate portion 4D. The second outer peripheral wall portion 4C includes a first side plate portion 4C1 to a fourth side plate portion 4C4. The first side plate portion 4C1 and the third side plate portion 4C3 are opposite to each other, and the second side plate portion 4C2 and the fourth side plate portion 4C4 are opposite to each other. Moreover, the first side plate portion 4C1 and the third side plate portion 4C3 extend perpendicularly relative to the second side plate portion 4C2 and the fourth side plate portion 4C4.

[0037] The upper cover member 4U is as follows Figure 1 As shown, the second outer peripheral wall portion 4C is bonded to the lower cover member 4L by an adhesive. The second outer peripheral wall portion 4C is arranged to partially cover the first outer peripheral wall portion 4A.

[0038] like Figure 2 As shown, the spacer member 1, the lens holding member 2, the metal member 5, the leaf spring 6, the base member 18, the shape memory alloy wire SA, etc. are accommodated in the cover member 4.

[0039] The movable side member MB includes a lens holding member 2 capable of holding a lens body (not shown), a shape memory alloy wire SA as a driving mechanism MK for moving the lens holding member 2 along the optical axis JD related to the lens body, and a leaf spring 6 for supporting the lens holding member 2 so as to be movable along the optical axis JD. The lens body is, for example, a cylindrical lens barrel having at least one lens, and its central axis is configured to be along the optical axis JD.

[0040] The spacer component 1 is configured to prevent the lens holding component 2 formed of a synthetic resin from colliding with the cover component 4 formed of metal when the lens holding component 2 moves in the Z1 direction. That is, the spacer component 1 is formed of a synthetic resin and is configured to form a space between the lens holding component 2 and the top plate portion 4B of the cover component 4. Moreover, the spacer component 1 is fixed to the upper cover component 4U by an adhesive. Specifically, the spacer component 1 and the lens holding component 2 constitute a stopper mechanism that limits excessive movement of the lens holding component 2 in the Z1 direction (upward). In the present embodiment, the lens holding component 2 is configured to contact the spacer component 1 when it moves only a specified distance in the Z1 direction. Through this configuration, the spacer component 1 can prevent the lens holding component 2 formed of a synthetic resin from contacting the upper cover component 4U formed of metal, and prevent wear of the lens holding component 2 caused by such contact. However, if a space can be formed between the lens holding component 2 and the top plate portion 4B of the upper cover component 4U by another structure, the spacer component 1 can also be omitted.

[0041] The lens holding member 2 is formed by injection molding a synthetic resin such as a liquid crystal polymer (LCP). Figure 2 As shown, it includes a cylindrical portion 12 formed in a manner extending along the optical axis JD, a movable side seat portion 2D formed in a manner protruding radially outward from the cylindrical portion 12, and a protruding setting portion 2S. In this embodiment, a thread groove is formed on the inner circumferential surface of the cylindrical portion 12 for the lens body to be screwed. The lens body can also be configured to be fixed to the inner circumferential surface of the cylindrical portion 12 using an adhesive. In this case, the thread groove may not be formed on the inner circumferential surface of the cylindrical portion 12.

[0042] The movable side seat portion 2D includes a first movable side seat portion 2D1 and a second movable side seat portion 2D2. The first movable side seat portion 2D1 and the second movable side seat portion 2D2 are configured to extend in opposite directions to each other across the optical axis JD. Similarly, the protruding portion 2S includes a first protruding portion 2S1 and a second protruding portion 2S2. The first protruding portion 2S1 and the second protruding portion 2S2 are configured to extend in opposite directions to each other across the optical axis JD. Specifically, the movable side seat portion 2D and the protruding portion 2S are configured to correspond to the four corners of the lens holding component 2, and are arranged alternately, and the lens holding component 2 has a substantially rectangular shape when viewed from above. Moreover, a portion of the leaf spring 6 is placed on each of the two movable side seat portions 2D.

[0043] The drive mechanism MK includes a shape memory alloy wire SA as an example of a shape memory actuator. In the present embodiment, the shape memory alloy wire SA includes a first wire SA1 to an eighth wire SA8. The shape memory alloy wire SA increases in temperature when current flows therethrough, and contracts according to the increase in temperature. The drive mechanism MK can utilize the contraction of the shape memory alloy wire SA to move the lens holding component 2 up and down along the optical axis JD. In addition, the shape memory alloy wire SA is configured such that if one or more of the first wire SA1 to the eighth wire SA8 contracts, the lens holding component 2 moves, and through this movement, another one or more of the first wire SA1 to the eighth wire SA8 is stretched.

[0044] The leaf spring 6 is configured to support the lens holding member 2 so as to be movable relative to the fixed side member RG (base member 18) in a direction parallel to the optical axis JD. In the present embodiment, the leaf spring 6 is made of a metal plate mainly made of a copper alloy, a titanium-copper alloy (titanium-copper), or a copper-nickel alloy (nickel-tin-copper). Specifically, the leaf spring 6 includes a first leaf spring 6A and a second leaf spring 6B.

[0045] The base member 18 is formed by injection molding using a synthetic resin such as a liquid crystal polymer (LCP). Figure 5 As shown in (A), the base member 18 has a substantially rectangular outline in a plan view and has an opening 18K in the center. Specifically, the base member 18 has four sides 18E (first side 18E1 to fourth side 18E4) arranged to surround the opening 18K.

[0046] The leaf spring 6 is configured to connect the movable side seat portion 2D formed on the lens holding member 2 and the fixed side seat portion 18D formed on the base member 18. The fixed side seat portion 18D includes a first fixed side seat portion 18D1 and a second fixed side seat portion 18D2.

[0047] More specifically, the first leaf spring 6A is configured to connect the first movable side seat portion 2D1 formed on the lens holding member 2 to the first fixed side seat portion 18D1 and the second fixed side seat portion 18D2 formed on the base member 18. Similarly, the second leaf spring 6B is configured to connect the second movable side seat portion 2D2 formed on the lens holding member 2 to the first fixed side seat portion 18D1 and the second fixed side seat portion 18D2 formed on the base member 18.

[0048] The metal component 5 is configured to fix the end of the shape memory alloy wire SA. In the present embodiment, the metal component 5 includes a fixed side metal component 5F and a movable side metal component 5M. The fixed side metal component 5F is configured to be fixed to the fixed side seat portion 18D of the base component 18. The movable side metal component 5M is configured to be fixed to the movable side seat portion 2D of the lens holding component 2.

[0049] More specifically, the fixed side metal component 5F is also called a fixed side connection plate, and includes a first fixed side connection plate 5F1 to an eighth fixed side connection plate 5F8. The movable side metal component 5M is also called a movable side connection plate, and includes a first movable side connection plate 5M1 to a fourth movable side connection plate 5M4.

[0050] Next, refer to Figure 3 , the positional relationship between the lens holding component 2 and the base component 18 and the metal component 5 respectively will be described. Figure 3 (A) is a perspective view of the lens holding member 2 to which the movable side metal member 5M (movable side terminal plate) and the plate spring 6 are attached. Figure 3 (B) is a perspective view of the base member 18 to which the fixed side metal member 5F (fixed side terminal block) is mounted. Figure 3 In (A), the movable side metal member 5M and the leaf spring 6 are marked with a dot pattern. Figure 3 In (B), a dot pattern is indicated on the fixed-side metal member 5F.

[0051] exist Figure 3 In the example shown in (A), the first movable side connection plate 5M1 is fixed to the side wall (right mounting surface) on the Y1 side of the first movable side seat portion 2D1. Specifically, a square protrusion 2V protruding outward (Y1 side) formed on the first movable side seat portion 2D1 and a rectangular hole AH (see Figure 4 (A)) In the meshing state, the first movable side terminal plate 5M1 is fixed to the first movable side seat portion 2D1 by an adhesive. The adhesive is, for example, a light-curing adhesive. The light-curing adhesive is, for example, an ultraviolet-curing adhesive or a visible light-curing adhesive. Similarly, the second movable side terminal plate 5M2 is fixed to the side wall on the X2 side of the first movable side seat portion 2D1 (the rear mounting surface), the third movable side terminal plate 5M3 is fixed to the side wall on the X1 side of the second movable side seat portion 2D2 (the front mounting surface), and the fourth movable side terminal plate 5M4 is fixed to the side wall on the Y2 side of the second movable side seat portion 2D2 (the left mounting surface).

[0052] exist Figure 3In the example shown in (B), the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are fixed to the side wall (right side mounting surface) on the Y1 side of the first fixed side seat portion 18D1 arranged along the second side portion 18E2 of the base member 18. Specifically, two circular protrusions 18V protruding outward (Y1 side) formed on the first fixed side seat portion 18D1 and through holes RH (see Figure 4 (A)) In the meshed state, the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are fixed to the first fixed side seat portion 18D1 by an adhesive. The adhesive is, for example, a light-curing adhesive. The light-curing adhesive is, for example, an ultraviolet curing adhesive or a visible light curing adhesive. Similarly, the third fixed side terminal plate 5F3 and the fourth fixed side terminal plate 5F4 ( Figure 3 (B) is fixed to the side wall (rear mounting surface) on the X2 side of the second fixed side seat portion 18D2 arranged along the third side 18E3 of the base member 18. In addition, the fifth fixed side terminal block 5F5 and the sixth fixed side terminal block 5F6 are fixed to the side wall (front mounting surface) on the X1 side of the first fixed side seat portion 18D1 arranged along the first side 18E1 of the base member 18. Furthermore, the seventh fixed side terminal block 5F7 and the eighth fixed side terminal block 5F8 ( Figure 3 (B) (not visible) is fixed to the side wall (left side mounting surface) on the Y2 side of the second fixed side pedestal portion 18D2 arranged along the fourth side portion 18E4 of the base member 18.

[0053] The shape memory alloy wire SA extends along the inner surface of the first peripheral wall portion 4A of the upper cover member 4U, and is configured to support the movable side member MB so that it can move relative to the fixed side member RG. In the present embodiment, the shape memory alloy wire SA includes the first wire SA1 to the eighth wire SA8, and is configured to support the lens holding member 2 as the movable side member MB so that it can move relative to the base member 18 as the fixed side member RG. The first wire SA1 to the eighth wire SA8 are respectively as follows: Figure 2 As shown, one end is fixedly bonded to the fixed-side metal member 5F by crimping, welding or the like, and the other end is fixedly bonded to the movable-side metal member 5M by crimping, welding or the like.

[0054] Next, refer to Figure 4 , the metal component 5 to which the shape memory alloy wire SA is attached will be described. Figure 4 (A) is a diagram showing the first wire SA1 attached to the first movable-side terminal plate 5M1 and the first fixed-side terminal plate 5F1, and the second wire SA2 attached to the first movable-side terminal plate 5M1 and the second fixed-side terminal plate 5F2, as viewed from the Y1 side. Figure 4 (B) is a diagram showing the first wire SA1 respectively mounted on the first movable side terminal plate 5M1 and the first fixed side terminal plate 5F1, and the second wire SA2 respectively mounted on the first movable side terminal plate 5M1 and the second fixed side terminal plate 5F2, as viewed from the X1 side. Figure 4 (A) and Figure 4 The positional relationship of the components shown in (B) corresponds to the positional relationship when the lens driving device 101 is assembled. Figure 4 (A) and Figure 4 In (B), for the sake of clarity, other parts are omitted. Figure 4 (A) and Figure 4 The following description of (B) is related to the combination of the first line SA1 and the second line SA2, but is also applicable to the combination of the third line SA3 and the fourth line SA4, the combination of the fifth line SA5 and the sixth line SA6, and the combination of the seventh line SA7 and the eighth line SA8.

[0055] Specifically, one end of the first wire SA1 is fixed to the first movable side wiring board 5M1 at the position of the holding portion J3 on the lower side of the first movable side wiring board 5M1, and the other end of the first wire SA1 is fixed to the first fixed side wiring board 5F1 at the position of the holding portion J2 of the first fixed side wiring board 5F1. Similarly, one end of the second wire SA2 is fixed to the first movable side wiring board 5M1 at the position of the holding portion J1 on the upper side of the first movable side wiring board 5M1, and the other end of the second wire SA2 is fixed to the second fixed side wiring board 5F2 at the position of the holding portion J4 of the second fixed side wiring board 5F2.

[0056] The holding portion J1 is formed by bending a portion of the first movable side connection plate 5M1. Specifically, a portion of the first movable side connection plate 5M1 is bent in a state of clamping one end of the second wire SA2, thereby forming the holding portion J1. In addition, one end of the second wire SA2 is fixed to the holding portion J1 by welding. The same applies to the holding portions J2 to J4.

[0057] The first line SA1 and the second line SA2 are Figure 4 As shown in (A), the first line SA1 and the second line SA2 are arranged in a twisted position with respect to each other. That is, the first line SA1 and the second line SA2 are arranged so as not to contact each other (non-contact).

[0058] Next, refer to Figure 5 , the base member 18 which is a part of the fixed side member RG will be described in detail. Figure 5 1 is a perspective view of the base member 18. Specifically, Figure 5 (A) is a perspective view of the base member 18 with the conductive member CM removed. Figure 5(B) is a perspective view of the conductive member CM embedded in the base member 18. Figure 5 (C) is a perspective view of the base member 18 in a state where the conductive member CM is embedded. Figure 5 (B) and Figure 5 In (C), for the sake of clarity, the conductive member CM is marked with a dot pattern.

[0059] The base member 18 is configured to function as a wire support member that supports one end of each of the first to eighth wires SA1 to SA8 . With this configuration, the movable member MB is supported by the first to eighth wires SA1 to SA8 so as to be movable in the Z-axis direction parallel to the optical axis JD.

[0060] A fixed side seat portion 18D is formed on the upper surface of the base member 18, which is the surface on the subject side (the surface on the Z1 side). The fixed side seat portion 18D includes a first fixed side seat portion 18D1 and a second fixed side seat portion 18D2. The first fixed side seat portion 18D1 and the second fixed side seat portion 18D2 are arranged to face each other across the optical axis JD.

[0061] In the base member 18, a Figure 5 (B) The conductive component CM is formed of a metal plate containing copper, iron, or an alloy containing them as the main component. In the present embodiment, the conductive component CM is configured to have a first terminal portion TM1 to an eleventh terminal portion TM11 protruding from the lower surface (the surface on the Z2 side) of the base component 18 and extending downward (in the Z2 direction), and a ninth joint surface portion CP9 and a tenth joint surface portion CP10 exposed on the upper surface (the surface on the Z1 side) of the base component 18.

[0062] Specifically, the conductive component CM includes a first conductive component CM1 to an eleventh conductive component CM11. Furthermore, the first conductive component CM1 includes a first terminal portion TM1 and a first connecting portion ED1. The second conductive component CM2 includes a second terminal portion TM2 and a second connecting portion ED2. The third conductive component CM3 includes a third terminal portion TM3 and a third connecting portion ED3. The fourth conductive component CM4 includes a fourth terminal portion TM4 and a fourth connecting portion ED4. The fifth conductive component CM5 includes a fifth terminal portion TM5 and a fifth connecting portion ED5. The sixth conductive component CM6 includes a sixth terminal portion TM6 and a sixth connecting portion ED6. The seventh conductive component CM7 includes a seventh terminal portion TM7 and a seventh connecting portion ED7. The eighth conductive component CM8 includes an eighth terminal portion TM8 and an eighth connecting portion ED8. The ninth conductive component CM9 includes a ninth terminal portion TM9 and a ninth joint surface portion CP9. The tenth conductive component CM10 includes a tenth terminal portion TM10 and a tenth joint surface portion CP10. The eleventh conductive component CM11 includes an eleventh terminal portion TM11 and an eleventh connecting portion ED11.

[0063] The first to fourth terminal portions TM1 to TM4 , the tenth terminal portion TM10 , and the eleventh terminal portion TM11 are arranged along the third side portion 18E3 of the base member 18 . The fifth to ninth terminal portions TM5 to TM9 are arranged along the first side portion 18E1 of the base member 18 .

[0064] That is, the first connection portion ED1 of the first conductive component CM1 is arranged along the second side 18E2 of the base component 18, and the first terminal portion TM1 of the first conductive component CM1 is arranged along the third side 18E3 of the base component 18 instead of the second side 18E2. Similarly, the second connection portion ED2 of the second conductive component CM2 is arranged along the second side 18E2 of the base component 18, and the second terminal portion TM2 of the second conductive component CM2 is arranged along the third side 18E3 of the base component 18 instead of the second side 18E2.

[0065] In addition, the seventh connection portion ED7 of the seventh conductive component CM7 is arranged along the fourth side 18E4 of the base component 18, and the seventh terminal portion TM7 of the seventh conductive component CM7 is arranged along the first side 18E1 of the base component 18 instead of the fourth side 18E4. Similarly, the eighth connection portion ED8 of the eighth conductive component CM8 is arranged along the fourth side 18E4 of the base component 18, and the eighth terminal portion TM8 of the eighth conductive component CM8 is arranged along the first side 18E1 of the base component 18 instead of the fourth side 18E4.

[0066] Thus, the first to eleventh terminal portions TM1 to TM11 are arranged along the first side portion 18E1 or the third side portion 18E3 of the base member 18 , and are not arranged along the second side portion 18E2 and the fourth side portion 18E4 of the base member 18 .

[0067] Next, refer to Figure 6 , the positional relationship among the leaf spring 6, the shape memory alloy wire SA, the metal member 5, and the conductive member CM will be described. Figure 6 : is a diagram showing the positional relationship among the leaf spring 6, the shape memory alloy wire SA, the metal member 5, and the conductive member CM. Specifically, Figure 6 (A) is a perspective view of each component (leaf spring 6, shape memory alloy wire SA, metal component 5, and conductive component CM), Figure 6 (B) is a top view of each component. Figure 6 In (B), the shape memory alloy wire SA and the conductive member CM are omitted for clarity. Figure 6 In (B), the leaf spring 6 is marked with a dot pattern.

[0068] Leaf spring 6 Figure 6 As shown in (B), the first leaf spring 6A and the second leaf spring 6B are included. The first leaf spring 6A has a first fixed side seat portion 18D1 fixed to the base member 18 (see Figure 2 ) and the first portion 6A1 fixed to the second fixed side pedestal portion 18D2 of the base member 18 (see Figure 2 ) and the first movable side seat portion 2D1 fixed to the lens holding member 2 (see Figure 2 ), a third part 6A3 connecting the first part 6A1 and the third part 6A3, a fourth part 6A4 connecting the first part 6A1 and the third part 6A3, and a fifth part 6A5 connecting the second part 6A2 and the third part 6A3.

[0069] A circular protrusion 18T (see Figure 3 (B)) The first through hole 6AH1 and the second through hole 6AH2 are inserted therethrough, and the protrusion 18T is formed on the first fixed side seat portion 18D1. In the present embodiment, the fixing of the leaf spring 6 and the protrusion 18T is achieved by hot riveting or cold riveting the protrusion 18T. However, the fixing of the leaf spring 6 and the protrusion 18T may also be achieved by an adhesive.

[0070] A circular protrusion 18T (see Figure 3 (B)) and the third through hole 6AH3 through which the tenth conductive member CM10 is inserted, and the tenth joint surface portion CP10 (see Figure 5(C)) is formed in the second fixed side seat portion 18D2. In the present embodiment, the plate spring 6 and the conductive member CM are joined by welding such as laser welding. However, the plate spring 6 and the conductive member CM may also be joined by solder or a conductive adhesive.

[0071] The third portion 6A3 is formed with a circular protrusion 2T (see Figure 3 (A)) The fifth through hole 6AH5 and the sixth through hole 6AH6 are inserted through the leaf spring 6, and the protrusion 2T is formed on the first movable side seat portion 2D1. In this embodiment, the fixing of the leaf spring 6 and the protrusion 2T is achieved by performing hot riveting or cold riveting on the protrusion 2T. However, the fixing of the leaf spring 6 and the protrusion 2T can also be achieved by an adhesive.

[0072] Similarly, the second leaf spring 6B has a first fixed side pedestal portion 18D1 fixed to the base member 18 (see Figure 2 ) and the first portion 6B1 fixed to the second fixed side pedestal portion 18D2 of the base member 18 (see Figure 2 ) and the second movable side seat portion 2D2 fixed to the lens holding member 2 (see Figure 2 ), a third part 6B3 connecting the first part 6B1 and the third part 6B3, a fourth part 6B4 connecting the first part 6B1 and the third part 6B3, and a fifth part 6B5 connecting the second part 6B2 and the third part 6B3.

[0073] A circular protrusion 18T (see Figure 3 (B)) and the first through hole 6BH1 through which the ninth conductive member CM9 is inserted, and the ninth bonding surface CP9 (see Figure 5 (C)) The second through hole 6BH2 for joining is formed in the first fixed side seat portion 18D1.

[0074] The second portion 6B2 is formed with a circular protrusion 18T (see Figure 3 (B) The protrusion 18T is formed on the second fixed side seat portion 18D2, and the third through hole 6BH3 and the fourth through hole 6BH4 are inserted therethrough.

[0075] The third portion 6B3 is formed with a circular protrusion 2T (see Figure 3 The protrusion 2T is formed in the second movable side pedestal 2D2, and includes a fifth through hole 6BH5 and a sixth through hole 6BH6 through which (A) is inserted.

[0076] In addition, the fourth portion 6A4 and the fifth portion 6A5 of the first leaf spring 6A and the fourth portion 6B4 and the fifth portion 6B5 of the second leaf spring 6B are elastically deformable arms having a plurality of curved portions. Therefore, the lens holding member 2 can move relative to the base member 18 (fixed side member RG) not only in a direction parallel to the optical axis JD but also in a direction intersecting the optical axis JD.

[0077] like Figure 6 As shown in (B), the first leaf spring 6A and the second leaf spring 6B have substantially the same shape. Specifically, the first leaf spring 6A and the second leaf spring 6B are configured to be twice rotationally symmetrical about the optical axis JD (rotationally symmetrical with a minimum rotation angle of 180°). Therefore, this configuration can reduce the number of components of the lens driving device 101. In addition, the first leaf spring 6A and the second leaf spring 6B can support the lens holding component 2 in the air with good balance. In addition, the leaf spring 6 will not have a negative impact on the weight balance of the movable side component MB supported by the eight shape memory alloy wires SA (the first wire SA1 to the eighth wire SA8).

[0078] The first connection portion ED1 of the first conductive component CM1 is Figure 6 As shown in (A), the first connection portion ED1 is vertically joined to the connection portion CT1 of the first fixed side connection plate 5F1 by soldering. That is, the first connection portion ED1 and the connection portion CT1 are joined in a state where the surfaces of each other are substantially perpendicular. Similarly, the second connection portion ED2 of the second conductive component CM2 is vertically joined to the connection portion CT2 of the second fixed side connection plate 5F2 by soldering, the third connection portion ED3 of the third conductive component CM3 is vertically joined to the connection portion CT3 of the third fixed side connection plate 5F3 by soldering, and the fourth connection portion ED4 of the fourth conductive component CM4 is vertically joined to the connection portion CT4 of the fourth fixed side connection plate 5F4 by soldering. In addition, the fifth connection portion ED5 of the fifth conductive component CM5 is vertically joined to the connection portion CT5 of the fifth fixed-side connection board 5F5 by solder, the sixth connection portion ED6 of the sixth conductive component CM6 is vertically joined to the connection portion CT6 of the sixth fixed-side connection board 5F6 by solder, the seventh connection portion ED7 of the seventh conductive component CM7 is vertically joined to the connection portion CT7 of the seventh fixed-side connection board 5F7 by solder, and the eighth connection portion ED8 of the eighth conductive component CM8 is vertically joined to the connection portion CT8 of the eighth fixed-side connection board 5F8 by solder.

[0079] The connection portion CT9 of the first movable side terminal block 5M1 is as shown in FIG. Figure 6As shown in (B), the connection portion CT9 is vertically joined to the third portion 6A3 of the first leaf spring 6A by soldering. That is, the connection portion CT9 and the third portion 6A3 are joined in a state where the surfaces of each other are substantially perpendicular. Similarly, the connection portion CT10 of the second movable side connection plate 5M2 is vertically joined to the third portion 6A3 of the first leaf spring 6A by soldering, the connection portion CT11 of the third movable side connection plate 5M3 is vertically joined to the third portion 6B3 of the second leaf spring 6B by soldering, and the connection portion CT12 of the fourth movable side connection plate 5M4 is vertically joined to the third portion 6B3 of the second leaf spring 6B by soldering.

[0080] On the other hand, the first fixed side terminal block 5F1 is as shown in FIG. Figure 6 (B), the third fixed-side terminal plate 5F3 is arranged separately from the first portion 6A1 of the first leaf spring 6A and does not contact the first portion 6A1 of the first leaf spring 6A. Similarly, the third fixed-side terminal plate 5F3 does not contact the second portion 6A2 of the first leaf spring 6A, the fifth fixed-side terminal plate 5F5 does not contact the first portion 6B1 of the second leaf spring 6B, and the seventh fixed-side terminal plate 5F7 does not contact the second portion 6B2 of the second leaf spring 6B.

[0081] The ninth bonding surface portion CP9 of the ninth conductive member CM9 (see Figure 5 (B)) is welded parallel to the first portion 6B1 of the second leaf spring 6B by laser welding or the like at the second through hole 6BH2 formed in the first portion 6B1 of the second leaf spring 6B. That is, the ninth joint surface CP9 is joined to the first portion 6B1 in a state where the surfaces of each other are substantially parallel. Similarly, the tenth joint surface CP10 of the tenth conductive member CM10 (see Figure 5 (B)) The fourth through hole 6AH4 formed in the second portion 6A2 of the first leaf spring 6A is welded by laser welding or the like and joined in parallel to the second portion 6A2 of the first leaf spring 6A.

[0082] Next, refer to Figure 7 , the path of the current flowing through the shape memory alloy wire SA is described. Figure 7 yes Figure 6 A perspective view of a portion of the structure shown. Figure 7 In (A), for the sake of clarity, the first conductive component CM1 and the tenth conductive component CM10 are marked with a sparse dot pattern, the first leaf spring 6A is marked with a dense dot pattern, and the first movable side terminal plate 5M1 and the first fixed side terminal plate 5F1 are marked with an even finer dot pattern. Figure 7 In (B), for the sake of clarity, the second conductive component CM2 and the tenth conductive component CM10 are marked with a sparse dot pattern, the first leaf spring 6A is marked with a dense dot pattern, and the first movable-side terminal plate 5M1 and the second fixed-side terminal plate 5F2 are marked with an even denser dot pattern.

[0083] Specifically, Figure 7 (A) shows the path of the current when the first terminal portion TM1 of the first conductive member CM1 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive member CM10 is connected to a low potential, Figure 7 (B) shows the path of the current when the second terminal portion TM2 of the second conductive component CM2 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive component CM10 is connected to a low potential. The following description is related to the path of the current flowing through the first line SA1 or the second line SA2, but is also applicable to the path of the current flowing through the third line SA3 or the fourth line SA4, the path of the current flowing through the fifth line SA5 or the sixth line SA6, and the path of the current flowing through the seventh line SA7 or the eighth line SA8.

[0084] If the first terminal portion TM1 of the first conductive component CM1 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive component CM10 is connected to a low potential, the current is as follows Figure 7 As shown by arrow AR1 in (A), the current flows from the first terminal portion TM1 to the first fixed-side connection plate 5F1 through the first conductive member CM1. Then, the current passes through the first fixed-side connection plate 5F1 as shown by arrow AR2, passes through the first wire SA1 as shown by arrow AR3, and then passes through the first movable-side connection plate 5M1 as shown by arrow AR4. Then, the current passes through the third portion 6A3, the fifth portion 6A5, and the second portion 6A2 of the first leaf spring 6A as shown by arrow AR5 and arrow AR6, and then passes through the tenth conductive member CM10 as shown by arrow AR7 and flows to the tenth terminal portion TM10.

[0085] If the second terminal portion TM2 of the second conductive component CM2 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive component CM10 is connected to a low potential, the current is as follows: Figure 7 As shown by arrow AR11 in (B), the current flows from the second terminal portion TM2 to the second fixed-side connection plate 5F2 through the second conductive member CM2. Then, the current passes through the second fixed-side connection plate 5F2 as shown by arrow AR12, passes through the second wire SA2 as shown by arrow AR13, and then passes through the first movable-side connection plate 5M1 as shown by arrow AR14. Then, the current passes through the third portion 6A3, the fifth portion 6A5, and the second portion 6A2 of the first leaf spring 6A as shown by arrow AR15 and arrow AR16, and then flows through the tenth conductive member CM10 to the tenth terminal portion TM10 as shown by arrow AR17.

[0086] The path of the current flowing from the first movable-side terminal plate 5M1 to the tenth terminal portion TM10 is the same regardless of whether the first terminal portion TM1 of the first conductive member CM1 or the second terminal portion TM2 of the second conductive member CM2 is connected to a high potential.

[0087] The control device located outside the lens driving device 101 as described above can control the contraction of each of the first line SA1 to the eighth line SA8 by controlling the voltage applied to each terminal portion of the first conductive member CM1 to the tenth conductive member CM10. In addition, the control device can also be configured in the lens driving device 101. In addition, the control device can also be a component of the lens driving device 101.

[0088] The lens driving device 101 having a substantially rectangular parallelepiped shape is mounted on, for example, an external substrate (not shown) on which an imaging element (not shown) is mounted. The camera module is composed of, for example, an external substrate, the lens driving device 101, a lens body mounted on the lens holding member 2, and an imaging element mounted on the external substrate opposite to the lens body. The camera module may also include a control device.

[0089] The control device may, for example, utilize the driving force in the direction parallel to the optical axis JD caused by the contraction of the shape memory alloy wire SA as the driving mechanism MK to move the lens holding component 2 in the direction parallel to the optical axis JD on the Z1 side (subject side) of the imaging element. Furthermore, by moving the lens holding component 2 in this way, the control device may realize an automatic focus adjustment function as one of the lens adjustment functions. Specifically, the control device may move the lens holding component 2 in a direction away from the imaging element so as to enable macro photography, and may move the lens holding component 2 in a direction close to the imaging element so as to enable infinite photography.

[0090] Furthermore, the control device may control the current flowing through the plurality of shape memory alloy wires SA to move the lens holding member 2 in a direction intersecting the optical axis JD. In this way, the control device may also realize a shake correction function.

[0091] Next, refer to Figure 8 , an example of a connection structure for connecting the fixed-side metal member 5F (fixed-side terminal plate) and the conductive member CM will be described. Figure 8 1 is a diagram showing an example of a connection structure for connecting the fixed-side metal component 5F (fixed-side terminal block) and the conductive component CM. Specifically, Figure 8 (A) is a perspective view of the entire base member 18 to which the fixed-side metal member 5F (fixed-side terminal block) is attached. Figure 8 (B) is viewed from the Y1 side. Figure 8(A) is an enlarged side view of a range R1 surrounded by a dotted line. Figure 8 (C) is viewed from the Z2 side. Figure 8 (B) is an enlarged bottom view of the range R2 surrounded by the dotted line. Figure 8 (A)~ Figure 8 In (C), for the sake of clarity, the fixed-side metal member 5F (fixed-side terminal plate) is indicated with a sparse dot pattern, and the conductive member CM is indicated with a dense dot pattern.

[0092] like Figure 8 (B) and Figure 8 As shown in (C), the first fixed side connection plate 5F1 is attached to the side wall (right side mounting surface) on the Y1 side of the first fixed side pedestal 18D1 of the base member 18 by means of a light-curing adhesive. Furthermore, the connection portion CT1 of the first fixed side connection plate 5F1 is bonded to the first connection portion ED1 of the first conductive member CM1 via a bonding material SD. The bonding material SD is, for example, solder or a conductive adhesive.

[0093] Similarly, the second fixed side connection plate 5F2 is attached to the side wall (right side mounting surface) on the Y1 side of the first fixed side pedestal 18D1 in the base member 18 by means of a light-curing adhesive. Furthermore, the connection portion CT2 of the second fixed side connection plate 5F2 is bonded to the second connection portion ED2 of the second conductive member CM2 via the bonding material SD. Figure 8 (B) and Figure 8 In (C), for the sake of clarity, the bonding material SD is marked with a cross pattern.

[0094] The first connection portion ED1 is Figure 8 As shown in (C), the second connection portion ED2 is arranged to protrude toward the Y1 side from the surface on the Y1 side (right side) of the connection portion CT1. Similarly, the second connection portion ED2 is arranged to protrude toward the Y1 side from the surface on the Y1 side (right side) of the connection portion CT2.

[0095] This configuration allows the bonding material SD to be attached to at least the upper surface (surface on the Z1 side) of the first connection portion ED1 and the outer surface (surface on the Y1 side) of the connection portion CT1, thereby improving the connection strength brought about by the bonding material SD between the connection portion CT1 and the first connection portion ED1. Typically, this configuration allows the bonding material SD to be attached to multiple surfaces constituting the first connection portion ED1 and multiple surfaces constituting the connection portion CT1, thereby improving the connection strength brought about by the bonding material SD between the connection portion CT1 and the first connection portion ED1. The same is true for the connection strength brought about by the bonding material SD between the connection portion CT2 and the second connection portion ED2.

[0096] In addition, this arrangement can prevent the end face (surface on the Y1 side) of the first connection part ED1, which is not plated, from being bonded to the connection part CT1 using the bonding material SD. The same applies to the bonding between the second connection part ED2 and the connection part CT2. In addition, the end face (surface on the Y1 side) of the first connection part ED1 is a cut surface formed when the discarded connection part (not shown) is cut off, so it is not plated. The discarded connection part is a part for connecting multiple conductive parts, which is used when the multiple conductive parts are embedded in the base part 18 by insert molding, but is finally discarded.

[0097] Reference Figures 9 to 11 , another combination of the lens holding member 2, the metal member 5, and the base member 18 constituting the lens driving device 101 will be described.

[0098] Fig. 9 1 is a perspective view of a base member 18A as another example of the base member 18. Specifically, Fig. 9 (A) is a perspective view of the base member 18A with the conductive member CM removed. Fig. 9 (B) is a perspective view of the conductive member CM embedded in the base member 18A. Fig. 9 (C) is a perspective view of the base member 18A in which the conductive member CM is embedded. Fig. 9 (B) and Fig. 9 In (C), for the sake of clarity, the conductive member CM is marked with a dot pattern.

[0099] Fig.10 2 is a perspective view of a lens holding component 2A as another example of the lens holding component 2. The lens holding component 2A is different from the lens holding component 2 in that the conductive component 20 is embedded by insert molding. Specifically, Fig.10 (A) is a perspective view of the lens holding member 2A in a state where the conductive member 20 is removed. Fig.10 (B) is a perspective view of the conductive member 20 embedded in the lens holding member 2A. Fig.10 (C) is a perspective view of the lens holding member 2A in a state where the conductive member 20 is embedded. Fig.10 (B) and Fig.10 In (C), for the sake of clarity, the conductive member 20 is marked with a dot pattern.

[0100] Fig.11 : is a diagram showing the positional relationship among the metal member 5, the leaf spring 6, the conductive member CM, the conductive member 20, and the shape memory alloy wire SA. Specifically, Fig.11 (A) is a diagram showing the positional relationship among the metal member 5 , the base member 18A, and the conductive member 20 . Fig.11(B) is a diagram showing the positional relationship among the metal member 5, the leaf spring 6, the conductive member CM, the conductive member 20, and the shape memory alloy wire SA. Fig.11 In (B), for the sake of clarity, the conductive member 20 is marked with a dot pattern.

[0101] The base member 18A and Figure 5 The base member 18A is formed by injection molding of a synthetic resin such as a liquid crystal polymer (LCP). Fig. 9 As shown in (A), it has a substantially rectangular outline in a plan view and has an opening 18K in the center. A fixed side seat portion 18D is formed on the upper surface of the subject side surface (Z1 side surface) of the base member 18A. The fixed side seat portion 18D includes a first fixed side seat portion 18D1 and a second fixed side seat portion 18D2. The first fixed side seat portion 18D1 and the second fixed side seat portion 18D2 are arranged to face each other across the optical axis JD.

[0102] The base member 18A is embedded with Fig. 9 (B) A conductive member CM formed of a metal plate as shown in FIG. In this example, the conductive member CM is configured to include: a first terminal portion TM1 to a tenth terminal portion TM10 protruding from the lower surface (surface on the Z2 side) of the base member 18A and extending downward (in the Z2 direction); a first joint surface portion CP1, a second joint surface portion CP2, a fifth joint surface portion CP5, and a sixth joint surface portion CP6 exposed on the side surface (surface on the X1 side and surface on the Y1 side) of the first fixed side seat portion 18D1; a third joint surface portion CP3, a fourth joint surface portion CP4, a seventh joint surface portion CP7, and an eighth joint surface portion CP8 exposed on the side surface (surface on the X2 side and surface on the Y2 side) of the second fixed side seat portion 18D2; and a ninth joint surface portion CP9, a tenth joint surface portion CP10, an eleventh joint surface portion CP11, and a twelfth joint surface portion CP12 exposed on the upper surface (surface on the Z1 side) of the base member 18A.

[0103] Specifically, the conductive component CM includes a first conductive component CM1 to a twelfth conductive component CM12. Furthermore, the first conductive component CM1 includes a first terminal portion TM1 and a first joint surface portion CP1. The second conductive component CM2 includes a second terminal portion TM2 and a second joint surface portion CP2. The third conductive component CM3 includes a third terminal portion TM3 and a third joint surface portion CP3. The fourth conductive component CM4 includes a fourth terminal portion TM4 and a fourth joint surface portion CP4. The fifth conductive component CM5 includes a fifth terminal portion TM5 and a fifth joint surface portion CP5. The sixth conductive component CM6 includes a sixth terminal portion TM6 and a sixth joint surface portion CP6. The seventh conductive component CM7 includes a seventh terminal portion TM7 and a seventh joint surface portion CP7. The eighth conductive component CM8 includes an eighth terminal portion TM8 and an eighth joint surface portion CP8. The ninth conductive component CM9 includes a ninth terminal portion TM9 and a ninth joint surface portion CP9. The tenth conductive component CM10 includes a tenth terminal portion TM10 and a tenth joint surface portion CP10. The eleventh conductive component CM11 includes an eleventh joint surface portion CP11. The twelfth conductive component CM12 includes a twelfth joint surface portion CP12.

[0104] The lens holding member 2A and Figure 2 The lens holding component 2 shown in the figure is formed by injection molding a synthetic resin such as a liquid crystal polymer (LCP). Specifically, the lens holding component 2A includes a cylindrical portion 12 formed in a manner extending along the optical axis JD, a movable side seat portion 2D formed in a manner protruding radially outward from the cylindrical portion 12, and a protruding portion 2S. Moreover, the movable side seat portion 2D includes a first movable side seat portion 2D1 and a second movable side seat portion 2D2. The first movable side seat portion 2D1 and the second movable side seat portion 2D2 are arranged to extend in opposite directions across the optical axis JD. Similarly, the protruding portion 2S includes a first protruding portion 2S1 and a second protruding portion 2S2. The first protruding portion 2S1 and the second protruding portion 2S2 are arranged to extend in opposite directions across the optical axis JD. Specifically, the movable side seat portion 2D and the protruding portion 2S are arranged corresponding to the four corners of the lens holding component 2A having a substantially rectangular outer shape when viewed from above, and are arranged alternately. Furthermore, a part of the leaf spring 6 is placed on each of the two movable-side pedestal parts 2D.

[0105] The lens holding member 2A is different from the lens holding member 2 in that a conductive member 20 is embedded therein, but is otherwise the same as the lens holding member 2. Therefore, the conductive member 20, which is a different portion, will be described in detail below, and description of other portions will be omitted.

[0106] The conductive member 20 is formed of a metal plate and embedded in the lens holding member 2A by insert molding, similar to the conductive member CM embedded in the base member 18. In this example, the conductive member 20 includes a first conductive member 20A embedded in the first movable side seat portion 2D1 and a second conductive member 20B embedded in the second movable side seat portion 2D2.

[0107] The first conductive component 20A includes a first conductive portion 20A1 that is exposed on the side wall (right side mounting surface) of the first movable side seat portion 2D1, a second conductive portion 20A2 that is exposed on the side wall (rear side mounting surface) of the first movable side seat portion 2D1, and a third conductive portion 20A3 that connects the first conductive portion 20A1 and the second conductive portion 20A2 on the upper surface of the first movable side seat portion 2D1.

[0108] The second conductive component 20B includes a first conductive portion 20B1 that is exposed on the side wall (front mounting surface) of the second movable side seat portion 2D2, a second conductive portion 20B2 that is exposed on the side wall (left mounting surface) of the second movable side seat portion 2D2, and a third conductive portion 20B3 that connects the first conductive portion 20B1 and the second conductive portion 20B2 on the upper surface of the second movable side seat portion 2D2.

[0109] Fig.11 The metal component 5 shown in (A) and Figure 3 The metal component 5 shown in FIG. 1 is similar to the metal component 5 shown in FIG. 1 , and is configured to fix the end of the shape memory alloy wire SA. In this example, the metal component 5 includes a fixed side metal component 5F and a movable side metal component 5M. The fixed side metal component 5F is configured to be fixed to the fixed side seat portion 18D of the base member 18. The movable side metal component 5M is configured to be fixed to the movable side seat portion 2D (see FIG. 2 ) of the lens holding member 2. Fig.10 (A)).

[0110] More specifically, the fixed-side metal member 5F (fixed-side terminal plate) includes first to eighth fixed-side terminal plates 5F1 to 5F8, and the movable-side metal member 5M (movable-side terminal plate) includes first to fourth movable-side terminal plates 5M1 to 5M4.

[0111] The first movable side terminal plate 5M1 is welded to the first conductive portion 20A1 exposed on the side wall (right side mounting surface) on the Y1 side of the first movable side pedestal portion 2D1. Fig.11 As shown in (A), a square protrusion 2V (see Fig.10(C)) The first movable side connection plate 5M1 is fixed to the first movable side seat portion 2D1 by a light-curing adhesive in a state where the first rectangular hole AH1 formed in the first movable side connection plate 5M1 is engaged. The light-curing adhesive is, for example, an ultraviolet curing adhesive or a visible light curing adhesive. On this basis, the first movable side connection plate 5M1 is parallelly joined to the first conductive portion 20A1 by welding or a joining material SD in a state where the first conductive portion 20A1 of the first conductive component 20A is exposed from the second rectangular hole AH2 formed in the first movable side connection plate 5M1. That is, the first conductive portion 20A1 and the first movable side connection plate 5M1 are joined in a state where the surfaces of each other are substantially parallel. The same is true for the second movable side connection plate 5M2 to the fourth movable side connection plate 5M4.

[0112] The first fixed side terminal block 5F1 and the second fixed side terminal block 5F2 are fixed to the side wall (right side mounting surface) on the Y1 side of the first fixed side pedestal portion 18D1. Fig.11 As shown in (A), in a state where two circular protrusions 18V protruding outward (Y1 side) formed on the first fixed side seat portion 18D1 are engaged with through holes RH formed on the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2, the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are fixed to the first fixed side seat portion 18D1 using a light-curing adhesive. The light-curing adhesive is, for example, an ultraviolet curing adhesive or a visible light curing adhesive. On this basis, the first joint surface portion CP1 of the first conductive component CM1 is extended from the rectangular hole FH1 (refer to Fig. 9 (B)) is exposed, the first fixed side connection plate 5F1 is parallelly bonded to the first conductive member CM1 by welding or bonding material SD. That is, the first bonding surface CP1 and the first fixed side connection plate 5F1 are bonded in a state where the surfaces of each other are substantially parallel. Similarly, when the second bonding surface CP2 of the second conductive member CM2 is extended from the rectangular hole FH2 (refer to Fig. 9 (B)) is exposed, the second fixed side connection plate 5F2 is parallelly joined to the second joint surface CP2 by welding or a joint material SD. That is, the second joint surface CP2 and the second fixed side connection plate 5F2 are joined in a state where the surfaces are substantially parallel to each other. The same is true for the third fixed side connection plate 5F3 to the eighth fixed side connection plate 5F8.

[0113] This configuration can improve the conductive bonding property compared to the case where the conductive member CM and the fixed-side metal member 5F are vertically bonded via the bonding material SD.

[0114] On the other hand, the first fixed side terminal block 5F1 and Figure 6(B) is the same as the structure shown in FIG. 1 , and is arranged separately from the first portion 6A1 of the first leaf spring 6A and does not contact the first portion 6A1 of the first leaf spring 6A. In addition, the third fixed-side connection plate 5F3 does not contact the second portion 6A2 of the first leaf spring 6A, the fifth fixed-side connection plate 5F5 does not contact the first portion 6B1 of the second leaf spring 6B, and the seventh fixed-side connection plate 5F7 does not contact the second portion 6B2 of the second leaf spring 6B.

[0115] The ninth bonding surface portion CP9 of the ninth conductive member CM9 (see Fig. 9 (B)) The second through hole 6BH2 formed in the first portion 6B1 of the second leaf spring 6B is welded by laser welding or a bonding material SD is parallelly bonded to the first portion 6B1 of the second leaf spring 6B. That is, the ninth bonding surface CP9 is bonded to the first portion 6B1 in a state where the surfaces of each other are substantially parallel. Similarly, the tenth bonding surface CP10 of the tenth conductive component CM10 (see Fig. 9 (B) The fourth through hole 6AH4 formed in the second portion 6A2 of the first leaf spring 6A is welded by laser welding or the like or the bonding material SD is parallelly bonded to the second portion 6A2 of the first leaf spring 6A. That is, the tenth bonding surface CP10 and the second portion 6A2 are bonded in a state where their surfaces are substantially parallel to each other.

[0116] Fig.11 (B) The shape memory alloy wire SA shown in Figure 6 (A) is the same as the shape memory alloy wire SA shown in FIG. 1 , which extends along the inner surface of the first peripheral wall portion 4A of the upper cover member 4U and is configured to support the movable side member MB so that it can move relative to the fixed side member RG. In this example, the shape memory alloy wire SA includes the first wire SA1 to the eighth wire SA8, and is configured to support the lens holding member 2 as the movable side member MB so that it can move relative to the base member 18 as the fixed side member RG. The first wire SA1 to the eighth wire SA8 are respectively as shown in FIG. Fig.11 As shown in (B), one end is fixed to the fixed-side metal member 5F by crimping or welding, and the other end is fixed to the movable-side metal member 5M by crimping or welding.

[0117] Fig.11 (B) The leaf spring 6 shown in Figure 6 The leaf spring 6 shown in (A) is the same as that shown in FIG. 1 , and includes a first leaf spring 6A and a second leaf spring 6B. The first leaf spring 6A has a first fixed side seat portion 18D1 fixed to the base member 18 (see FIG. 1 ). Fig.11 (A)) is fixed to the first portion 6A1 of the base member 18, and the second fixed side pedestal portion 18D2 (see Fig.11 (A)) and the second portion 6A2 fixed to the first movable side pedestal portion 2D1 of the lens holding member 2 ( Fig.10 (A) Refer to the third part 6A3), the fourth part 6A4 connecting the first part 6A1 and the third part 6A3, and the fifth part 6A5 connecting the second part 6A2 and the third part 6A3.

[0118] A circular protrusion 18T (see Fig.11 (A)) is inserted into the first through hole 6AH1, and the protrusion 18T is formed on the first fixed side seat portion 18D1. In this example, the fixing of the leaf spring 6 and the protrusion 18T is achieved by performing hot caulking or cold caulking on the protrusion 18T. However, the fixing of the leaf spring 6 and the protrusion 18T can also be achieved by an adhesive.

[0119] A circular protrusion 18T (see Fig.11 (A)) and the third through hole 6AH3 through which the tenth conductive member CM10 is inserted, and the tenth joint surface portion CP10 (see Fig. 9 (C)) is formed in the second fixed side seat portion 18D2. In this example, the plate spring 6 and the conductive member CM are joined by welding such as laser welding. However, the plate spring 6 and the conductive member CM may also be joined by solder or a conductive adhesive.

[0120] The third portion 6A3 is formed with a circular protrusion 2T (see Fig.10 (C)) and the fifth through hole 6AH5 and the sixth through hole 6AH6 inserted therethrough, and the third conductive portion 20A3 (see Fig.10 (C)) is connected to the seventh through hole 6AH7, and the protrusion 2T is formed on the first movable side seat part 2D1. In this example, the fixing of the leaf spring 6 and the protrusion 2T is achieved by hot riveting or cold riveting the protrusion 2T. However, the fixing of the leaf spring 6 and the protrusion 2T can also be achieved by an adhesive. In addition, the fixing of the third part 6A3 of the first leaf spring 6A and the third conductive part 20A3 of the first conductive component 20A is achieved by welding.

[0121] The same also applies to the fixation of the second leaf spring 6B, the lens holding member 2, the base member 18, the conductive member 20, and the conductive member CM.

[0122] Next, refer to Fig.12 , the path of the current flowing through the shape memory alloy wire SA is described. Fig.12 yes Fig.11 A perspective view of a portion of the structure shown. Fig.12In (A), for the sake of clarity, the first conductive component CM1 and the tenth conductive component CM10 are marked with a sparse dot pattern, the first leaf spring 6A is marked with a dense dot pattern, the first movable side terminal plate 5M1 and the first fixed side terminal plate 5F1 are marked with an even denser dot pattern, and the first conductive component 20A is marked with a cross pattern. Fig.12 In (B), for the sake of clarity, the second conductive component CM2 and the tenth conductive component CM10 are marked with a sparse dot pattern, the first leaf spring 6A is marked with a denser dot pattern, the first movable side terminal plate 5M1 and the second fixed side terminal plate 5F2 are marked with an even denser dot pattern, and the first conductive component 20A is marked with a cross pattern.

[0123] Specifically, Fig.12 (A) shows the path of the current when the first terminal portion TM1 of the first conductive member CM1 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive member CM10 is connected to a low potential, Figure 7 (B) shows the path of the current when the second terminal portion TM2 of the second conductive component CM2 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive component CM10 is connected to a low potential. The following description is related to the path of the current flowing through the first line SA1 or the second line SA2, but is also applicable to the path of the current flowing through the third line SA3 or the fourth line SA4, the path of the current flowing through the fifth line SA5 or the sixth line SA6, and the path of the current flowing through the seventh line SA7 or the eighth line SA8.

[0124] If the first terminal portion TM1 of the first conductive component CM1 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive component CM10 is connected to a low potential, the current is as follows Fig.12 As shown by arrow AR1 in (A), the current flows from the first terminal portion TM1 to the first fixed-side connection plate 5F1 through the first conductive member CM1. Then, the current passes through the first fixed-side connection plate 5F1 as shown by arrow AR2, passes through the first wire SA1 as shown by arrow AR3, and then passes through the first movable-side connection plate 5M1 as shown by arrow AR4. Then, the current passes through the first conductive member 20A and the third portion 6A3 of the first leaf spring 6A as shown by arrow AR5, passes through the fifth portion 6A5 and the second portion 6A2 of the first leaf spring 6A as shown by arrow AR6 and arrow AR7, and then passes through the tenth conductive member CM10 as shown by arrow AR8 to flow to the tenth terminal portion TM10.

[0125] If the second terminal portion TM2 of the second conductive component CM2 is connected to a high potential and the tenth terminal portion TM10 of the tenth conductive component CM10 is connected to a low potential, the current is as follows: Fig.12As shown by arrow AR11 in (B), the current flows from the second terminal portion TM2 to the second fixed-side connection plate 5F2 through the second conductive member CM2. Then, the current flows through the second fixed-side connection plate 5F2 as shown by arrow AR12, through the second wire SA2 as shown by arrow AR13, and then through the first movable-side connection plate 5M1 as shown by arrow AR14. Then, the current flows through the first conductive member 20A and the third portion 6A3 of the first leaf spring 6A as shown by arrow AR15, through the fifth portion 6A5 and the second portion 6A2 of the first leaf spring 6A as shown by arrow AR16 and arrow AR17, and then through the tenth conductive member CM10 as shown by arrow AR18 to flow to the tenth terminal portion TM10.

[0126] The path of the current flowing from the first movable-side terminal plate 5M1 to the tenth terminal portion TM10 is the same regardless of whether the first terminal portion TM1 of the first conductive member CM1 or the second terminal portion TM2 of the second conductive member CM2 is connected to a high potential.

[0127] The control device located outside the lens driving device 101 as described above can control the contraction of each of the first line SA1 to the eighth line SA8 by controlling the voltage applied to each terminal portion of the first conductive member CM1 to the tenth conductive member CM10. In addition, the control device can also be configured in the lens driving device 101. In addition, the control device can also be a component of the lens driving device 101.

[0128] Next, refer to Fig.13 as well as Fig.14 Another example of the connection structure for connecting the fixed-side metal member 5F (fixed-side terminal plate) and the conductive member CM will be described. Fig.13 as well as Fig.14 1 is a diagram showing another example of a connection structure for connecting the fixed-side metal component 5F (fixed-side terminal block) and the conductive component CM. Specifically, Fig.13 (A) is a perspective view of the entire base member 18 to which the fixed-side metal member 5F (fixed-side terminal block) is mounted. Figure 8 (A) Corresponding. Fig.13 (B) is viewed from the Y1 side. Fig.13 (A) is an enlarged side view of the range R3 surrounded by the dotted line. Figure 8 (B) Corresponding. Fig.14 (A) is viewed from the Z2 side. Fig.13 (B) is an enlarged bottom view of the range R4 surrounded by the dotted line. Figure 8 (C) Corresponding. Fig.14(B) is a diagram showing the connection portion CT1 of the first fixed-side terminal plate 5F1 and the first connection portion ED1 of the first conductive member CM1 when viewed from the front side (X1 side). Fig.13 as well as Fig.14 In the figure, for the sake of clarity, the fixed side metal component 5F (fixed side terminal block) is marked with a sparse dot pattern, and the conductive component CM is marked with a dense dot pattern. Fig.13 (B) Fig.14 (A) and Fig.14 In (B), for the sake of clarity, the bonding material SD is marked with a cross pattern.

[0129] like Fig.13 (B) and Fig.14 As shown in (A), the first fixed side connection plate 5F1 is attached to the side wall (right side mounting surface) on the Y1 side of the first fixed side pedestal 18D1 of the base member 18 by means of a light-curing adhesive. Furthermore, the connection portion CT1 of the first fixed side connection plate 5F1 is bonded to the first connection portion ED1 of the first conductive member CM1 via a bonding material SD. The bonding material SD is, for example, solder or a conductive adhesive.

[0130] Similarly, the second fixed-side connection plate 5F2 is attached to the side wall (right mounting surface) on the Y1 side of the first fixed-side pedestal portion 18D1 in the base member 18 by means of a light-curing adhesive. Furthermore, the connection portion CT2 of the second fixed-side connection plate 5F2 is bonded to the second connection portion ED2 of the second conductive member CM2 via the bonding material SD.

[0131] Connecting part CT1 Fig.14 (A) and Fig.14 As shown in FIG. 5B , the first fixed-side terminal plate 5F1 is arranged so as to cover at least a portion of the end surface EP on the Y1 side (right side) of the first connecting portion ED1. Fig.14 As shown in (B), the connection portion CT1 is bent outward (toward the Y1 side) at the root portion RT of the connection portion CT1 so that the connection portion CT1 is located outside (toward the Y1 side) of the first connection portion ED1. The same applies to the connection portion CT2.

[0132] This configuration allows the bonding material SD to be attached to at least the lower surface (the surface on the Z2 side) of the connection part CT1 and the surface on the outer side (the Y1 side) of the first connection part ED1, thereby improving the connection strength brought by the bonding material SD between the connection part CT1 and the first connection part ED1. Typically, this configuration allows the bonding material SD to be attached to multiple surfaces constituting the first connection part ED1 and multiple surfaces constituting the connection part CT1, thereby improving the connection strength brought by the bonding material SD between the connection part CT1 and the first connection part ED1. The same is true for the connection strength brought by the bonding material SD between the connection part CT2 and the second connection part ED2.

[0133] In addition, if Fig.14 As shown in (A), a recess RS1 is formed at the front end of the first connecting portion ED1. This structure allows the bonding material SD to easily enter between the connecting portion CT1 and the first connecting portion ED1, thereby improving the connection strength brought by the bonding material SD between the connecting portion CT1 and the first connecting portion ED1. The same is true for the connection strength brought by the bonding material SD between the second connecting portion ED2 and the connecting portion CT2, which have a recess RS2 formed at the front end.

[0134] In addition, this arrangement can prevent only the end surface EP (surface on the Y1 side) of the first connection portion ED1 that is not plated from being joined to the connection portion CT1 by the joining material SD. The same applies to the joining between the second connection portion ED2 and the connection portion CT2.

[0135] Next, refer to Fig.15 , another example of the connection structure for connecting the fixed-side metal member 5F (fixed-side terminal plate) and the conductive member CM will be described. Fig.15 2 is a diagram showing another example of a connection structure for connecting the fixed-side metal component 5F (fixed-side terminal block) and the conductive component CM. Specifically, Fig.15 (A) is a bottom perspective view of the base member 18 before the fixed-side metal member 5F (fixed-side terminal block) is mounted. Fig.15 (B) is a bottom perspective view of the base member 18 after the fixed side metal member 5F (fixed side terminal block) is installed. Fig.15 (A) corresponds. In addition, Fig.15 (A) and Fig.15 In (B), for the sake of clarity, the fixed-side metal member 5F (fixed-side terminal plate) is indicated with a sparse dot pattern, and the conductive member CM is indicated with a dense dot pattern.

[0136] exist Fig.15In the example shown, the connection portion CT1 has an elastic contact portion EC1. The elastic contact portion EC1 is a portion formed at the front end of the connection portion CT1 and is configured to engage with the recess RS1 formed at the front end of the first connection portion ED1. Specifically, the elastic contact portion EC1 is configured as follows: Fig.15 As shown in (B), in the state of being engaged with the recessed portion RS1, a force is generated to press the first connecting portion ED1 in the Y2 direction. That is, the elastic contact portion EC1 is configured to elastically contact the recessed portion RS1. Moreover, the connecting portion CT1 is welded to the first connecting portion ED1 by laser welding or a bonding material SD while the elastic contact portion EC1 is pressed against the recessed portion RS1.

[0137] Similarly, the connection part CT2 has an elastic contact part EC2. The elastic contact part EC2 is a part formed at the front end of the connection part CT2, and is configured to engage with the recess RS2 formed at the front end of the second connection part ED2. Specifically, the elastic contact part EC2 is configured as follows: Fig.15 As shown in (B), in the state of being engaged with the recessed portion RS2, a force is generated to press the second connecting portion ED2 in the Y2 direction. That is, the elastic contact portion EC2 is configured to elastically contact the recessed portion RS2. Moreover, the connecting portion CT2 is welded to the second connecting portion ED2 by laser welding or a bonding material SD while the elastic contact portion EC2 is pressed against the recessed portion RS2.

[0138] This configuration allows the connection portion CT1 (elastic contact portion EC1) to be joined to the first connection portion ED1 (recess RS1) in an elastically contacting state, thereby increasing the connection strength between the connection portion CT1 and the first connection portion ED1 by welding or bonding material SD.

[0139] Next, refer to Figure 16 to Figure 18 , an example of a connection structure related to the metal component 5 is described. Fig.16 1 is a diagram showing an example of a connection structure associated with the metal component 5. Specifically, Fig.16 (A) is a front view of the base member 18 to which the lens holding member 2, the metal member 5, the conductive member CM, and the shape memory alloy wire SA are assembled. Fig.16 (B) is caused by Fig.16 (A) is an enlarged view of a range R5 surrounded by a dotted line. Fig.16 (C) is Fig.16 (A) is an enlarged view of the range R6 surrounded by the dotted line. Fig.16 In (A), for the sake of clarity, the lens holding member 2 is marked with a sparse dot pattern, and the base member 18 is marked with a dense dot pattern. Fig.16 (B) and Fig.16In (C), for the sake of clarity, the photocurable adhesive EA is indicated with a dot pattern.

[0140] In this example, the photocurable adhesive EA is a hybrid adhesive that is primarily cured by ultraviolet irradiation and secondarily cured by heating. However, the photocurable adhesive EA may be an adhesive that is cured only by visible light or ultraviolet irradiation.

[0141] Fig.17 as well as Fig.18 1 is a diagram showing an example of a connection structure for connecting the fixed-side metal member 5F and the base member 18. Specifically, Fig.17 (A) is a perspective view of the base member 18 before the fifth fixed-side terminal plate 5F5 and the sixth fixed-side terminal plate 5F6 are mounted. Fig.17 (B) is a perspective view of the base member 18 after the fifth fixed-side terminal plate 5F5 and the sixth fixed-side terminal plate 5F6 are installed. Fig.17 (A) Corresponding. Fig.18 1 is a front view of the base member 18 before the light-curing adhesive EA is applied after the fifth fixed-side wiring board 5F5 and the sixth fixed-side wiring board 5F6 are installed, and Fig.17 (B) Corresponding.

[0142] The following description is related to the connection structure connecting the fifth fixed side terminal block 5F5 and the sixth fixed side terminal block 5F6 to the base component 18, but the same is also applicable to the connection structure connecting the first fixed side terminal block 5F1 to the fourth fixed side terminal block 5F4, the seventh fixed side terminal block 5F7, and the eighth fixed side terminal block 5F8 to the base component 18 respectively.

[0143] Specifically, the base member 18 is as follows Fig.16(B) has a protrusion 18V. The protrusion 18V includes an upper protrusion 18VU and a lower protrusion 18VL. The upper protrusion 18VU is inserted into the through hole RH (fifth through hole RH5) formed in the fifth fixed side connection plate 5F5, and the lower protrusion 18VL is inserted into the through hole RH (sixth through hole RH6) formed in the sixth fixed side connection plate 5F6. In addition, the "fifth" in the "fifth through hole RH5" means related to the fifth fixed side connection plate 5F5, and the "sixth" in the "sixth through hole RH6" means related to the sixth fixed side connection plate 5F6. Moreover, although not indicated by the figure numerals, there are through holes corresponding to the first fixed side connection plate 5F1 to the fourth fixed side connection plate 5F4, the seventh fixed side connection plate 5F7, and the eighth fixed side connection plate 5F8. The same applies to the “fifth axis AX5 ,” “sixth axis AX6 ,” “fifth contact surface CF5 ,” “sixth contact surface CF6 ,” “fifth extended portion EL5 ,” and “sixth extended portion EL6 ” described later.

[0144] Furthermore, the fifth fixed-side terminal plate 5F5 is mounted on the base member 18 in a state where the upper protrusion 18VU is engaged with the fifth through hole RH5, and is fixed to the base member 18 by a light-curing adhesive EA (first light-curing adhesive EA1) arranged from the surface around the fifth through hole RH5 to the outer side surface of the upper protrusion 18VU. The outer side surface of the upper protrusion 18VU typically includes the end surface and the outer peripheral surface of the upper protrusion 18VU. However, the outer side surface of the upper protrusion 18VU may also be the outer peripheral surface of the upper protrusion 18VU. That is, the outer side surface of the upper protrusion 18VU may not include the end surface of the upper protrusion 18VU.

[0145] Similarly, the sixth fixed-side terminal plate 5F6 is mounted on the base member 18 in a state where the lower protrusion 18VL is engaged with the sixth through hole RH6, and is fixed to the base member 18 by the first light-curing adhesive EA1 arranged from the surface around the sixth through hole RH6 to the outer side surface of the lower protrusion 18VL. The outer side surface of the lower protrusion 18VL includes the end surface and the outer peripheral surface of the lower protrusion 18VL. However, the outer side surface of the lower protrusion 18VL may also be the outer peripheral surface of the lower protrusion 18VL. That is, the outer side surface of the lower protrusion 18VL may not include the end surface of the lower protrusion 18VL.

[0146] In this example, the upper protrusion 18VU and the lower protrusion 18VL are arranged in a row and close to each other along the up-down direction (Z-axis direction). Moreover, the first light-curing adhesive EA1 is arranged from the surface around the fifth through hole RH5 to the outer side surface of the upper protrusion 18VU, and is arranged from the surface around the sixth through hole RH6 to the outer side surface of the lower protrusion 18VL. That is, the first light-curing adhesive EA1 is arranged to cover the upper protrusion 18VU and the lower protrusion 18VL as a whole. However, the upper protrusion 18VU and the lower protrusion 18VL may also be arranged to be tilted relative to the up-down direction. In addition, the light-curing adhesive EA attached to the upper protrusion 18VU and the light-curing adhesive EA attached to the lower protrusion 18VL may also be arranged separately from each other.

[0147] The fifth fixed-side connection plate 5F5 has an extension portion EL (fifth extension portion EL5) extending in a direction away from the fifth through hole RH5. In this example, the fifth fixed-side connection plate 5F5 has the fifth extension portion EL5 extending in the Y2 direction and then in the Z2 direction to connect to the connection portion CT5. In addition, in this example, the fifth extension portion EL5 is formed to be located on the side opposite to the side where the holding portion J2 is located across the upper protrusion 18VU.

[0148] Similarly, the sixth fixed-side connection plate 5F6 has an extension portion EL (sixth extension portion EL6) extending in a direction away from the sixth through hole RH6. In this example, the sixth fixed-side connection plate 5F6 has the sixth extension portion EL6 that extends in the Y2 direction and then in the Z2 direction and is connected to the connection portion CT6. In this example, the sixth extension portion EL6 is formed to be located on the side opposite to the side where the holding portion J4 is located across the lower protrusion 18VL, similarly to the fifth extension portion EL5.

[0149] In addition, the fifth fixed side connection plate 5F5 and the sixth fixed side connection plate 5F6 are fixed and adhered not only by the first light-curing adhesive EA1, but also by the second light-curing adhesive EA2 and the third light-curing adhesive EA3. Specifically, the second light-curing adhesive EA2 is the same as the first light-curing adhesive EA1, and is arranged so as to straddle the fifth fixed side connection plate 5F5 and the sixth fixed side connection plate 5F6. More specifically, the second light-curing adhesive EA2 is as follows: Fig.16 (B) is configured to span the periphery of the lower side (Z2 side) of the fifth extension portion EL5 and the periphery of the upper side (Z1 side) of the sixth extension portion EL6. On the other hand, the third light-curing adhesive EA3 is configured to be attached only to the fifth fixed-side wiring board 5F5. Specifically, the third light-curing adhesive EA3 is configured as follows Fig.16As shown in (B), it is arranged to be attached to the peripheral edge of the left side (Y2 side) of the fifth extension portion EL5.

[0150] In addition, if Fig.16 (B) Fig.17 ,as well as Fig.18 As shown in FIG. 1 , a limiting wall portion RB is disposed between the fifth fixed-side terminal plate 5F5 and the sixth fixed-side terminal plate 5F6, and a recessed portion GR is disposed on the inner side (X2 side) of the fixed-side metal member 5F. Fig.17 as well as Fig.18 In the figure, for the sake of clarity, the limiting wall portion RB is marked with a denser dot pattern, and the recessed portion GR is marked with a sparser dot pattern. Fig.17 In (B), a sparser dot pattern is indicated for the photocurable adhesive EA.

[0151] The limiting wall portion RB is a portion that bulges outward (in the X1 direction) from the outer surface (the surface on the X1 side) of the base member 18. Fig.17 As shown in (A), the fifth contact surface CF5 and the sixth contact surface CF6 are defined. The fifth contact surface CF5 is configured to contact the peripheral edge of the right side (Y1 side) of the fifth extended portion EL5 of the fifth fixed-side connection plate 5F5. In addition, the sixth contact surface CF6 is configured to contact the peripheral edge of the left side (Y2 side) of the sixth extended portion EL6 of the sixth fixed-side connection plate 5F6.

[0152] Specifically, the fifth abutment surface CF5 is configured to prevent the fifth axis AX5 (see FIG. 1 ) which is the central axis of the upper protrusion 18VU extending in the front-rear direction (X-axis direction) from moving. Fig.17 (A)) as the center of the fifth extended portion EL5 to perform arc movement. In addition, the sixth abutment surface CF6 is configured to prevent the sixth axis AX6 (refer to Fig.17 (A)) is to prevent the sixth extending portion EL6 from making an arc movement of the rotation center.

[0153] The recessed portion GR is a structure for placing the light-curing adhesive EA between the fixed-side metal member 5F and the base member 18. In this example, the recessed portion GR includes a first recessed portion GR1, a second recessed portion GR2, a third recessed portion GR3, and a fourth recessed portion GR4.

[0154] The first recess GR1 is formed to connect the upper protrusion 18VU and the lower protrusion 18VL. Specifically, the first recess GR1 extends in the up-down direction and passes through the inner side (X2 side) of the fifth fixed-side terminal plate 5F5 and the inner side (X2 side) of the sixth fixed-side terminal plate 5F6.

[0155] The second recess GR2 is formed between the first recess GR1 and the third recess GR3. Specifically, the second recess GR2 extends in the up-down direction and is formed to pass through the inner side (X2 side) of the fifth fixed-side connection plate 5F5 and the inner side (X2 side) of the sixth fixed-side connection plate 5F6. In addition, the second recess GR2 is formed to pass through the inner side (X2 side) of the periphery of the right side (Y2 side) of the connection portion CT6 constituting the sixth fixed-side connection plate 5F6.

[0156] The third recessed portion GR3 is formed so as to pass through the inner side (X2 side) of the peripheral edge of the fifth extended portion EL5 and the connecting portion CT5 on the left side (Y2 side) of each of the fifth fixed-side connection plate 5F5. Specifically, the third recessed portion GR3 extends in the up-down direction and passes through the inner side (X2 side) of the fifth fixed-side connection plate 5F5, but is formed so as not to pass through the inner side (X2 side) of the sixth fixed-side connection plate 5F6.

[0157] The fourth recess GR4 extends in the up-down direction on the right side (Y1 side) of the first recess GR1 and is formed to pass through the inner side (X2 side) of the fifth fixed-side terminal plate 5F5 and the inner side (X2 side) of the sixth fixed-side terminal plate 5F6.

[0158] In other words, the recess GR is configured so that the light-curing adhesive EA can flow from the outside (X1 side) of the fixed-side metal component 5F into the recess GR and adhere to the inside (X2 side) surface of the fixed-side metal component 5F.

[0159] Specifically, the first recess GR1 is configured so that the first light-curing adhesive EA1 can flow from the outer sides (X1 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 and adhere to the inner sides (X2 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6. That is, the first recess GR1 is configured so that the first light-curing adhesive EA1 is received on the inner sides (X2 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 when the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 are attached to the base member 18.

[0160] In addition, the second recess GR2 is configured so that the second light-curing adhesive EA2 can flow from the outer sides (X1 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 and adhere to the inner sides (X2 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6. That is, the second recess GR2 is configured so that the second light-curing adhesive EA2 can be received on the inner sides (X2 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 when the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 are attached to the base member 18.

[0161] In addition, the third recess GR3 is configured so that the third light-curing adhesive EA3 can flow from the outer side (X1 side) of the fifth fixed-side wiring board 5F5 and adhere to the inner side (X2 side) surface of the fifth fixed-side wiring board 5F5. In other words, the third recess GR3 is configured to receive the third light-curing adhesive EA3 on the inner side (X2 side) of the fifth extension portion EL5 when the fifth fixed-side wiring board 5F5 is mounted on the base member 18.

[0162] In addition, a notch CUa is formed at the left side (Y2 side) periphery of the fifth extension portion EL5 on the opposite side of the right side (Y1 side) periphery of the fifth extension portion EL5 facing the limiting wall portion RB so as to allow access to the third recess GR3 from the outside (X1 direction). The third light-curing adhesive EA3 can flow into the third recess GR3 through the notch CUa and adhere to the inner side (X2 side) surface of the fifth extension portion EL5.

[0163] In addition, the fourth recess GR4 is configured so that the first light-curing adhesive EA1 can flow from the outer sides (X1 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 and adhere to the inner sides (X2 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6. That is, the fourth recess GR4 is configured so that the first light-curing adhesive EA1 is received on the inner sides (X2 sides) of the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 when the fifth fixed-side connection board 5F5 and the sixth fixed-side connection board 5F6 are attached to the base member 18. That is, the first light-curing adhesive EA1 is applied so as to enter the first recess GR1 and the fourth recess GR4, respectively.

[0164] The lens holding component 2 is as follows Fig.16 (C) shows a rectangular protrusion 2V. In this example, the protrusion 2V is inserted into a rectangular hole AH formed in the third movable-side terminal plate 5M3.

[0165] Furthermore, the third movable side terminal plate 5M3 is mounted on the lens holding member 2 in a state where the protrusion 2V is fitted into the rectangular hole AH, and is fixed to the lens holding member 2 by a light-curing adhesive EA (fourth light-curing adhesive EA4) arranged from the surface around the rectangular hole AH to the outer side surface of the protrusion 2V. The outer side surface of the protrusion 2V typically includes the end surface and the outer peripheral surface of the protrusion 2V. However, the outer side surface of the protrusion 2V may also be the outer peripheral surface of the protrusion 2V. That is, the outer side surface of the protrusion 2V may not include the end surface of the protrusion 2V.

[0166] The third movable side terminal plate 5M3 is configured not to rotate around the protrusion 2V by fitting a rectangular hole AH disposed in the center of the third movable side terminal plate 5M3 with the rectangular protrusion 2V. Specifically, the rectangular hole AH is formed approximately in the middle between the holding portion J1 and the holding portion J3.

[0167] In addition, the third movable side connection plate 5M3 has an extension portion EM (third extension portion EM3) extending in a direction away from the rectangular hole AH. In this example, the third movable side connection plate 5M3 has a third extension portion EM3 extending in the Y1 direction. In addition, in this example, the third extension portion EM3 is formed to be located on the side opposite to the side where the connection portion CT11 is located across the protrusion 2V.

[0168] In addition, if Fig.16 As shown in (C), a restriction wall portion ST is arranged on the right side (Y1 side) of the third extended portion EM3.

[0169] The limiting wall portion ST is a portion that bulges outward (in the X1 direction) from the outer surface (surface on the X1 side) of the lens holding member 2, and is configured to define a contact surface CFb. The contact surface CFb is configured to contact the peripheral edge of the right side (Y1 side) of the extended portion EM3 of the third movable side terminal plate 5M3. Specifically, the contact surface CFb is configured to prevent the movement of the third movable side terminal plate 5M3 that is intended to move to the right (in the Y1 direction).

[0170] In addition, a notch CUb is formed on the right side (Y1 side) of the third extension portion EM3 so as to be opposite to the contact surface CFb of the limiting wall portion ST. The fifth photocurable adhesive EA5 can pass through the notch CUb to reach the inner side (X2 side) of the third extension portion EM3 and adhere to the inner side (X2 side) of the third extension portion EM3.

[0171] Next, refer to Fig.18 , which explains the force acting on the fixed-side metal member 5F when the shape memory alloy wire SA contracts when the fixed-side metal member 5F is attached to the base member 18.

[0172] The shape memory alloy wire SA contracts when heated. Fig.18 In the example shown, the contracted fifth wire SA5 generates a force that pulls the holding portion J2 in the direction indicated by the arrow AR20. In this case, the contracted fifth wire SA5 generates a force that tends to rotate the fifth fixed-side terminal plate 5F5 around the fifth axis AX5, which is the central axis of the upper protrusion 18VU, as indicated by the arrow AR21. Furthermore, the contracted fifth wire SA5 generates a force that tends to rotate the fifth extension portion EL5 of the fifth fixed-side terminal plate 5F5 around the fifth axis AX5, as indicated by the arrow AR22.

[0173] Therefore, although the fifth extending portion EL5 attempts to rotate in the direction indicated by the arrow AR22, the right side (Y1 side) peripheral edge of the fifth extending portion EL5 contacts the fifth abutting surface CF5 of the limiting wall portion RB, and thus the rotation is blocked by the fifth abutting surface CF5.

[0174] Thus, even when the fifth wire SA5 contracts due to heating, the fifth fixed-side terminal plate 5F5 does not rotate around the fifth axis AX5.

[0175] Similarly, the contracted sixth wire SA6 generates a force that pulls the holding portion J4 in the direction indicated by the arrow AR23. In this case, the contracted sixth wire SA6 generates a force that attempts to rotate the sixth fixed-side connection plate 5F6 around the sixth axis AX6, which is the central axis of the lower protrusion 18VL, as indicated by the arrow AR24. Furthermore, the contracted sixth wire SA6 generates a force that attempts to rotate the sixth extension portion EL6 of the sixth fixed-side connection plate 5F6 around the sixth axis AX6, as indicated by the arrow AR25.

[0176] Therefore, although the sixth extending portion EL6 attempts to rotate in the direction indicated by the arrow AR25, the left side (Y2 side) peripheral edge of the sixth extending portion EL6 contacts the sixth abutting surface CF6 of the limiting wall portion RB, and thus its rotation is blocked by the sixth abutting surface CF6.

[0177] Thus, even when the sixth wire SA6 contracts due to heating, the sixth fixed-side terminal plate 5F6 does not rotate around the sixth axis AX6.

[0178] As described above, the lens driving device 101 includes the base member 18 as the fixed side member RG made of resin, the lens holding member 2 as the movable side member MB supported to be movable relative to the base member 18, the metal member 5 as the terminal board mounted on the base member 18, and the shape memory alloy wire SA as the shape memory actuator, one end of which is fixedly adhered to the metal member 5 and is configured to move the lens holding member 2 by shrinking in accordance with the temperature rise. In addition, the lens driving device 101 has a conductive member CM, which is embedded in the base member 18, a part of which is exposed from the base member 18 and electrically connected to the metal member 5, and another part of which is exposed from the base member 18 at a position separated from the metal member 5 to become an external terminal.

[0179] Specifically, the lens driving device 101 includes a first conductive member CM1 embedded in the base member 18. The first conductive member CM1 is configured as a part (eg Figure 5 The first connection portion ED1 shown, or Fig. 9The joint surface CP1 shown in FIG. 1 is exposed from the base member 18 and is electrically connected to the first fixed side terminal plate 5F1, and the other part (eg Figure 5 as well as Fig. 9 The first terminal portion TM1 shown in FIG. 5 is exposed from the base member 18 at a position separated from the first fixed side terminal plate 5F1 to become an external terminal. In addition, the first fixed side terminal plate 5F1 is located along the second side portion 18E2 of the base member 18 (see FIG. 5 ). Figure 5 as well as Fig. 9 ), the first terminal portion TM1 is located along the third side portion 18E3 of the base member 18 (see Figure 5 as well as Fig. 9 )’s location.

[0180] Since this configuration does not make a part of the metal component 5 as a terminal block an external terminal, but makes a part of the conductive component CM connected to the metal component 5 an external terminal, it is possible to increase the degree of freedom of the position where the external terminal is set. Therefore, this configuration can, for example, increase the degree of freedom of wiring in an external substrate having a structure for receiving the external terminal. In addition, even if an external force is applied to the external terminal, this configuration can suppress or prevent the influence from affecting the metal component 5 as a terminal block. Therefore, even if an external force is applied to the external terminal, this configuration can suppress or prevent the influence from affecting the shape memory alloy wire SA attached to the metal component 5.

[0181] The conductive member CM may have a joint surface parallel to the surface of the metal member 5 as a terminal plate at one end, and the joint surface overlaps with the metal member 5 and is joined to the terminal plate by welding. However, the joint surface and the terminal plate may be joined by solder or a conductive adhesive.

[0182] Specifically, one of the conductive components CM, namely the first conductive component CM1, may also be as follows: Fig. 9 As shown in FIG. 5B , the first conductive member CM1 has a bonding surface CP1 at one end which is parallel to the surface of the first fixed-side terminal plate 5F1. Fig.11 As shown in (A), the joint surface portion CP1 is overlapped with the first fixed-side terminal plate 5F1 and is joined to the first fixed-side terminal plate 5F1 by welding.

[0183] This structure can facilitate the joining of the first conductive member CM1 and the first fixed-side connection plate 5F1, and can make the joining of the first conductive member CM1 and the first fixed-side connection plate 5F1 more reliable. This is because this structure can join the first conductive member CM1 and the first fixed-side connection plate 5F1 in a state where the contact area between the first conductive member CM1 and the first fixed-side connection plate 5F1 is increased compared to the case where the first conductive member CM1 and the first fixed-side connection plate 5F1 are joined vertically.

[0184] The base member 18 is preferably a polygonal ring member having one side and other sides. In this case, the metal member 5 as a terminal block is mounted along one side on the base member 18. Furthermore, a part of the conductive member CM electrically connected to the metal member 5, that is, an external terminal, is provided along the other side.

[0185] For example, the base member 18 is Figure 3 As shown in FIG. 2B , a four-sided ring-shaped member having a second side 18E2 as one side and a third side 18E3 as another side may also be used. In this case, the first fixed side terminal plate 5F1 is as shown in FIG. Figure 3 As shown in FIG. 1B , the first terminal TM1 as a part of the first conductive member CM1 electrically connected to the first fixed-side terminal plate 5F1 is arranged along the third side 18E3 as another side.

[0186] This structure is designed so that the external terminals are arranged along the third side 18E3 as the other side instead of along the second side 18E2 as one side, thereby increasing the freedom of wiring in the external substrate having a structure for receiving the external terminals. This is because, in this structure, it is not necessary to arrange the above-mentioned structure in the area on the external substrate corresponding to the second side 18E2. Therefore, this structure can, for example, easily implement a wiring design that prevents interference between wiring related to the imaging element arranged on the external substrate and wiring related to the lens driving device 101. Or, for example, even in a case where two lens driving devices 101 are arranged adjacent to each other, this structure can prevent the external terminals of the two lens driving devices 101 from interfering with each other, thereby making wiring difficult.

[0187] like Figure 3 As shown in (B), the base member 18 may be a four-sided ring member having a first side 18E1, a second side 18E2, a third side 18E3, and a fourth side 18E4. Furthermore, the metal member 5 as a terminal block may include a first terminal block (a first fixed side terminal block 5F1 and a second fixed side terminal block 5F2), a second terminal block (a third fixed side terminal block 5F3 and a fourth fixed side terminal block 5F4), a third terminal block (a fifth fixed side terminal block 5F5 and a sixth fixed side terminal block 5F6), and a fourth terminal block (a seventh fixed side terminal block 5F7 and an eighth fixed side terminal block 5F8). In addition, the external terminals may be Figure 5As shown in (B), it may also include a first external terminal (a first terminal portion TM1 and a second terminal portion TM2), a second external terminal (a third terminal portion TM3 and a fourth terminal portion TM4), a third external terminal (a fifth terminal portion TM5 and a sixth terminal portion TM6), and a fourth external terminal (a seventh terminal portion TM7 and an eighth terminal portion TM8).

[0188] In this case, the first external terminals (first terminal portion TM1 and second terminal portion TM2 ) are electrically connected to the first terminal plates (first fixed-side terminal plate 5F1 and second fixed-side terminal plate 5F2 ) attached to the base member 18 along the second side portion 18E2 .

[0189] Furthermore, the second external terminals (third terminal portion TM3 and fourth terminal portion TM4 ) are electrically connected to second terminal plates (third fixed-side terminal plate 5F3 and fourth fixed-side terminal plate 5F4 ) attached to base member 18 along third side portion 18E3 .

[0190] Furthermore, the third external terminals (fifth terminal portion TM5 and sixth terminal portion TM6 ) are electrically connected to third terminal plates (fifth fixed-side terminal plate 5F5 and sixth fixed-side terminal plate 5F6 ) attached to the base member 18 along the first side portion 18E1 .

[0191] Furthermore, the fourth external terminals (the seventh terminal portion TM7 and the eighth terminal portion TM8 ) are electrically connected to the fourth terminal plates (the seventh fixed-side terminal plate 5F7 and the eighth fixed-side terminal plate 5F8 ) attached to the base member 18 along the fourth side portion 18E4 .

[0192] Moreover, if Figure 5 As shown, the first external terminal (the first terminal portion TM1 and the second terminal portion TM2) and the second external terminal (the third terminal portion TM3 and the fourth terminal portion TM4) are arranged along the third side 18E3, and the third external terminal (the fifth terminal portion TM5 and the sixth terminal portion TM6) and the fourth external terminal (the seventh terminal portion TM7 and the eighth terminal portion TM8) are arranged along the first side 18E1.

[0193] This configuration allows the external terminals to be arranged along the first side 18E1 and the third side 18E3 instead of along the second side 18E2 and the fourth side 18E4, thereby increasing the degree of freedom of wiring in the external substrate having a structure for receiving the external terminals. This is because, in this configuration, it is not necessary to arrange the above structure in the area on the external substrate corresponding to the second side 18E2 and the fourth side 18E4.

[0194] The first conductive component CM1 is Figure 8As shown in FIG. 1 , the first connecting portion ED1 may be provided at one end and extend substantially perpendicularly to the surface of the first fixed side connection plate 5F1. In this case, the first connecting portion ED1 is bonded to the first fixed side connection plate 5F1 via a bonding material SD. The same is true for the second conductive member CM2 to the eighth conductive member CM8. Fig.14 (A) and Fig.14 As shown in FIG. 2B , the first connection portion ED1 may be bonded to the first connection portion ED1 via the bonding material SD in a state where the end surface EP of the first connection portion ED1 is located on the inner side (the side close to the optical axis JD) of the first fixed-side connection plate 5F1. Alternatively, the first fixed-side connection plate 5F1 may be bonded to the first connection portion ED1 via the bonding material SD. Fig.15 As shown, the first connection portion ED1 is joined to the first connection portion by welding in a state where the first connection portion ED1 is pressed.

[0195] These configurations can improve the connection strength between the conductive member CM (the first connecting portion ED1 of the first conductive member CM1 ) and the metal member 5 (the connecting portion CT1 of the first fixed-side terminal plate 5F1 ).

[0196] The lens driving device 101 may also include a base member 18 as a fixed side member RG, a lens holding member 2 as a movable side member MB supported to be movable relative to the base member 18, a fixed side metal member 5F as a terminal board mounted on the base member 18, and a shape memory alloy wire SA as a shape memory actuator, the shape memory actuator being configured such that one end is fixedly adhered to the fixed side metal member 5F and contracts in response to a temperature rise to move the lens holding member 2. In this case, for example, Fig.16 As shown in FIG. 5B , the base member 18 has a protrusion 18V, and the fixed-side metal member 5F (fifth fixed-side terminal plate 5F5) has a through hole RH. The fixed-side metal member 5F is mounted on the base member 18 in a state where the protrusion 18V is engaged with the through hole RH, and is fixed to the base member 18 by a light-curing adhesive EA arranged from the surface around the through hole RH to the outer side surface of the protrusion 18V.

[0197] This configuration can prevent the shape memory alloy wire SA from shrinking when the fixed-side metal component 5F is fixed to the base component 18. This is because, in this configuration, since the light-curing adhesive EA is used, it is not necessary to heat the adhesive for fixing the fixed-side metal component 5F to the base component 18. Therefore, this configuration can prevent the positional deviation of the fixed-side metal component 5F from occurring when the fixed-side metal component 5F is fixed to the base component 18. As a result, this configuration can prevent, for example, the deterioration of the operating characteristics of the shape memory alloy wire SA as the driving mechanism MK in the lens driving device 101.

[0198] The shape memory alloy wire SA as the shape memory actuator may also be, for example, Fig.18 As shown, one end is fixedly bonded at a position separated from the through hole RH of the fixed side metal member 5F in the vertical direction (Z-axis direction) and is extended in the horizontal direction (Y-axis direction). Fig.18 In the example shown, the fifth wire SA5 is configured such that one end thereof is fixedly bonded to the holding portion J2 at a position separated from the fifth through hole RH5 of the fifth fixed-side terminal plate 5F5 in the upward direction (Z1 direction) and extends in the left direction (Y2 direction). In addition, the sixth wire SA6 is configured such that one end thereof is fixedly bonded to the holding portion J4 at a position separated from the sixth through hole RH6 of the sixth fixed-side terminal plate 5F6 in the downward direction (Z2 direction) and extends in the left direction (Y2 direction).

[0199] In this case, the fixed-side metal member 5F may include an extended portion EL extending in a direction away from the through hole RH. Fig.18 In the example shown, the fifth fixed-side terminal plate 5F5 has a fifth extended portion EL5 extending in a direction away from the fifth through hole RH5 (extending in the Y2 direction and then in the Z2 direction). In addition, the sixth fixed-side terminal plate 5F6 has a sixth extended portion EL6 extending in a direction away from the sixth through hole RH6 (extending in the Y2 direction and then in the Z2 direction).

[0200] The extended portion EL may be configured so that, when the shape memory alloy wire SA contracts, it receives a rotational force with the axis AX extending in the front-rear direction (X-axis direction) as the rotation center. Fig.18 In the example shown, the fifth fixed-side terminal plate 5F5 is arranged so that when the fifth line SA5 contracts in the direction indicated by the arrow AR20, it is subjected to the fifth axis AX5 (see FIG. 1 ) extending in the front-rear direction (X-axis direction). Fig.17 (A)) is the rotation center in the direction indicated by the arrow AR21. That is, the fifth extension portion EL5 is configured to receive a rotation force in the direction indicated by the arrow AR22 with the fifth axis AX5 as the rotation center. Similarly, the sixth fixed-side terminal plate 5F6 is configured to receive a rotation force in the direction indicated by the arrow AR22 with the fifth axis AX5 as the rotation center when the sixth line SA6 contracts in the direction indicated by the arrow AR23. Fig.17 (A)) is a rotational force in the direction indicated by the arrow AR24 with the sixth axis AX6 as the rotation center. That is, the sixth extended portion EL6 is arranged so as to receive a rotational force in the direction indicated by the arrow AR25 with the sixth axis AX6 as the rotation center.

[0201] Moreover, if Fig.17As shown, the base member 18 may also have a limiting wall portion RB that defines the abutment surface CF abutted by the extended portion EL, which is intended to move in an arc with the axis AX extending in the front-rear direction (X-axis direction) as the rotation center. Fig.17 In the example shown, the base component 18 has a fifth abutting surface CF5 that determines the abutment of the fifth extension portion EL5, and a sixth abutting surface CF6 that determines the abutment of the sixth extension portion EL6, the fifth extension portion EL5 is intended to move in an arc with the fifth axis AX5 as the rotation center, and the sixth extension portion EL6 is intended to move in an arc with the sixth axis AX6 as the rotation center. In addition, the base component 18 may also have a third recess GR3 that forms a space on the inner side (X2 direction) of the periphery of the fifth extension portion EL5 and can be entered from the outside (X1 direction). Moreover, the inner surface (surface on the X2 side) of the fifth extension portion EL5 may also be fixedly adhered to the base component 18 using the third photocurable adhesive EA3 filled in the third recess GR3.

[0202] This configuration allows the fixed-side metal member 5F to be positioned by the protrusion 18V and the restriction wall RB. This configuration also prevents the fixed-side metal member 5F from rotating about the axis AX, thereby preventing the fixed-side metal member 5F from peeling off from the base member 18 .

[0203] You can also Fig.17 As shown in (B), a notch portion CUa is provided at a position of the fifth extension portion EL5 overlapping with the third recess GR3. The notch portion CUa can also be used when filling the third recess GR3 with the third light-curing adhesive EA3. This structure can facilitate the filling of the third light-curing adhesive EA3 into the third recess GR3. In addition, this structure can make the third light-curing adhesive EA3 continuously (integrally) attached to the inner surface (surface on the X2 side) and the outer surface (surface on the X1 side) of the fifth extension portion EL5 and the end face of the notch portion CUa.

[0204] The photocurable adhesive EA may be an adhesive having both properties of the photocurable adhesive EA and properties of the thermosetting adhesive. For example, the photocurable adhesive EA may be a hybrid adhesive that is primarily cured by ultraviolet irradiation and secondarily cured by heating as in the above example.

[0205] This structure can suppress the positional deviation of the fixed-side metal component 5F relative to the base component 18 when the light-curing adhesive EA is cured. In addition, this structure can achieve a more stable adhesion between the fixed-side metal component 5F and the base component 18. This is because the shape memory alloy wire SA is not heated when the light-curing adhesive EA is primarily cured by ultraviolet rays. In addition, the light-curing adhesive EA is primarily cured to such an extent that the positional deviation of the fixed-side metal component 5F does not occur, and is secondarily cured by heating in this state, so that the bonding strength between the fixed-side metal component 5F and the base component 18 is improved.

[0206] The fixed side metal component 5F may also include a first terminal plate (fifth fixed side terminal plate 5F5) and a second terminal plate (sixth fixed side terminal plate 5F6), wherein a first protrusion (upper protrusion 18VU) associated with the first terminal plate (fifth fixed side terminal plate 5F5) and a second protrusion (lower protrusion 18VL) associated with the second terminal plate (sixth fixed side terminal plate 5F6) are closely arranged so as to be integrally covered with the photocurable adhesive EA (first photocurable adhesive EA1). Fig.17 In the example shown in (B), the upper protrusion 18VU associated with the fifth fixed-side connection plate 5F5 and the lower protrusion 18VL associated with the sixth fixed-side connection plate 5F6 are arranged closely in the vertical direction (Z-axis direction) in a manner that they are integrally covered with the first light-curing adhesive EA1. In addition, "close" means that, for example, the distance between the upper protrusion 18VU and the lower protrusion 18VL is less than half the height of the first fixed-side base portion 18D1.

[0207] This configuration can improve the manufacturing efficiency of the lens driving device 101. This is because the two fixed side metal parts 5F (fifth fixed side wiring board 5F5 and sixth fixed side wiring board 5F6) are bonded and fixed by applying the light-curing adhesive EA (first light-curing adhesive EA1) once.

[0208] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the above embodiments. Various modifications and substitutions can be applied to the above embodiments without departing from the scope of the present invention. In addition, the features described with reference to the above embodiments can also be appropriately combined as long as there is no technical contradiction.

[0209] Description of Reference Numerals

[0210] 1···Spacer 2···Lens holding member 2D···Movable side seat portion 2D1···First movable side seat portion 2D2···Second movable side seat portion 2S···Protrusion portion 2S1···First protrusion portion 2S2···Second protrusion portion 2T···Protrusion portion 2V···Protrusion portion 4···Cover member 4A···First outer peripheral wall portion 4A1···First side plate portion 4A2···Second side plate portion 4A3···Third side plate portion 4A4···Fourth side plate portion 4B···Top plate portion 4C···Second outer peripheral wall portion 4C1 ···First side plate portion 4C2···Second side plate portion 4C3···Third side plate portion 4C4···Fourth side plate portion 4D···Bottom plate portion 4k···Opening 4L···Lower cover member 4m···Opening 4s···Storage portion 4U···Upper cover member 5···Metal member 5F···Fixed side metal member 5F1···First fixed side terminal block 5F2···Second fixed side terminal block 5F3···Third fixed side terminal block 5F4···Fourth fixed side terminal block 5F5···Fifth fixed side terminal block 5F6···Sixth fixed side terminal block plate 5F7···seventh fixed side terminal plate 5F8···eighth fixed side terminal plate 5M···movable side metal component 5M1···first movable side terminal plate 5M2···second movable side terminal plate 5M3···third movable side terminal plate 5M4···fourth movable side terminal plate 6···leaf spring 6A···first leaf spring 6A1···first portion 6A2···second portion 6A3···third portion 6A4···fourth portion 6A5···fifth portion 6AH1···first through hole 6AH2···second through hole 6AH3···first third through hole 6AH4···fourth through hole 6AH5···fifth through hole 6AH6···sixth through hole 6AH7···seventh through hole 6B···second leaf spring 6B1···first portion 6B2···second portion 6B3···third portion 6B4···fourth portion 6B5···fifth portion 6BH1···first through hole 6BH2···second through hole 6BH3···third through hole 6BH4···fourth through hole 6BH5···fifth through hole 6BH6···sixth through hole 12···cylindrical portion 18,18A···base member 18E···side 18E1···first side 18E2···second side 18E3···third side 18E4···fourth side 18K···opening 18T···protrusion 18V···protrusion 18VL···lower protrusion 18VU···upper protrusion 20···conductive member 20A···first conductive member 20A1···first conductive portion 20A2···second conductive portion 20A3···third conductive portion 20B···second conductive member 20B1 ···First conductive part 20B2···Second conductive part 20B3···Third conductive part 101···Lens driving device AH···Rectangular hole AH1···First rectangular hole AH2···Second rectangular hole AX···Axis AX5···Fifth axis AX6···Sixth axis CF, CFb···Contact surface CF5···Fifth contact surface CF6···Sixth contact surface CM···Conductive component CM1···First conductive component CM2···Second conductive component CM3···Third conductive component CM4···Fourth conductive component 15th conductive component CM5···5th conductive component CM6···6th conductive component CM7···7th conductive component CM8···8th conductive component CM9···9th conductive component CM10···10th conductive component CM11···11th conductive component CM12···12th conductive component CP1···1st joint surface CP2···2nd joint surface CP3···3rd joint surface CP4···4th joint surface CP5···5th joint surface CP6···6th joint surface CP7···7th joint surface Joining surface CP8···eighth joining surface CP9···ninth joining surface CP10···tenth joining surface CP11···eleventh joining surface CP12···twelfth joining surface CT1~CT12···connecting portion CUa, CUb···notch portion EA···photocuring adhesive EA1···first photocuring adhesive EA2···second photocuring adhesive EA3···third photocuring adhesive EA4···fourth photocuring adhesive EA5···fifth photocuring adhesive EC1,EC2···elastic contact portion ED1···first connection portion ED2···second connection portion ED3···third connection portion ED4···fourth connection portion ED5···fifth connection portion ED6···sixth connection portion ED7···seventh connection portion ED8···eighth connection portion ED11···eleventh connection portion EL···extended portion EL5···fifth extended portion EL6···sixth extended portion EP···end surface GR···recess GR1···first recess GR2···second recess GR3···third recess GR4···fourth recesses J1 to J4···holding portion JD···optical axis MB···movable side member MK···driving mechanism RB···limiting wall portion RG···fixed side member RH·· ·Through hole RH5···Fifth through hole RH6···Sixth through hole RS1, RS2···Recess SA···Shape memory alloy wire SA1···First wire SA2···Second wire SA3···Third wire SA4···Fourth wire SA5···Fifth wire SA6···Sixth wire SA7···Seventh wire SA8···Eighth wire SD···Joint material ST···Restriction wall portion TM1···First terminal portion TM2···Second terminal portion TM3···Third terminal portion TM4···Fourth terminal portion TM5···Fifth terminal portion TM6···Sixth terminal portion TM7···Seventh terminal portion TM8···Eighth terminal portion TM9···Ninth terminal portion TM10···Tenth terminal portion TM1···First terminal portion. 、

Claims

1. A lens driving device, characterized in that: have: A base member serving as a fixed side member; A lens holding member as a movable side member supported so as to be movable relative to the base member; A wiring board mounted on the base member; as well as A shape memory actuator, one end of which is fixedly bonded to the terminal plate and configured to move the lens holding member by contracting in response to a temperature rise. The base member has a protrusion, The wiring board has a through hole, The terminal plate is mounted on the base member in a state where the protrusion is fitted into the through hole, and is fixed to the base member by a light-curing adhesive arranged from the surface around the through hole to the outer side surface of the protrusion. The shape memory actuator is configured such that one end is fixedly adhered to a position separated from the through hole of the wiring board in the vertical direction and extends in the horizontal direction. The terminal plate has an extended portion extending in a direction away from the through hole. When the shape memory actuator contracts, the extension portion is subjected to a rotational force with an axis extending in the front-rear direction as a rotation center. The base member has a limiting wall portion and a recessed portion, the limiting wall portion defining an abutment surface against which the extension portion subjected to the rotational force abuts, the recessed portion forming a space inside the periphery of the extension portion and accessible from the outside, The recess is filled with the photocurable adhesive so that the inner surface of the extension portion is fixedly adhered to the base member. The photocurable adhesive is an adhesive having properties of the photocurable adhesive and properties of the thermosetting adhesive. The wiring board includes a first wiring board and a second wiring board. The first protrusion associated with the first wiring board and the second protrusion associated with the second wiring board are arranged close to each other in a manner so as to be integrally covered with the photocurable adhesive. The first wiring board and the second wiring board are mounted on the same surface of the base component. The first contact surface defined by the limiting wall portion prevents the first wiring board from rotating in one direction. A second abutting surface different from the first abutting surface and defined by the restricting wall portion prevents the second terminal plate from rotating in another direction different from the one direction.

2. The lens driving device according to claim 1, characterized in that: A notch portion is provided at a position of the extended portion that overlaps with the recessed portion.

3. A camera module, characterized in that: have: The lens driving device according to claim 1 or 2; a lens; and The imaging element is opposite to the lens body.

Images