Optical member driving device and camera module

Abstract

Provided is an optical member driving device capable of suppressing a shape memory alloy wire from being sandwiched between members. A lens drive device (100) as an optical member drive device is provided with: a fixed-side member (FB) including a base member (8); a lens holding member (2) as an optical member holding member, which is provided so as to be movable with respect to the base member, and which has an opening (2K) that can hold a lens body (LS) as an optical member and that penetrates in the vertical direction; and a plurality of shape memory alloy wires (SA), one end of which is fixed to the fixed-side member and the other end of which is fixed to a movable-side member (MB) including the lens holding member, the plurality of shape memory alloy wires (SA) being disposed so as to face an inner surface (IF) of a lower-side outer peripheral wall portion (4A) of a housing (HS) constituting the fixed-side member, and moving the lens holding member relative to the base member. A shape memory alloy wire is disposed such that an intermediate portion between one end and the other end is attached to a viscoelastic member (VE) attached to a fixed-side member. The optical member driving device is provided with: a cover member (3); an upper outer peripheral wall portion (3A) having a top plate portion (3B) facing the base member (8) in the vertical direction and including a plurality of upper side plate portions extending downward from an outer edge portion of the top plate portion (3B); and a plurality of shape memory alloy wires (SA) disposed on the inner side of the upper outer peripheral wall portion (3A). The fixed-side member (FB) includes a housing member (4) that accommodates the base member (8) and has an open upper portion. The housing member (4) has a bottom plate portion (4B) disposed on the lower side of the base member (8), and a lower outer peripheral wall portion (4A) including a plurality of lower side plate portions extending upward from an outer edge portion of the bottom plate portion (4B). The lower side plate portion is located between the shape memory alloy wire (SA) and an upper side plate portion constituting an upper outer peripheral wall portion (3A) of the cover member (3), and faces the shape memory alloy wire (SA).

Description

Technical Field

[0001] The present application relates to an optical component driving device and a camera module. Background Art

[0002] Conventionally, there is known a device that drives a lens using a shape memory alloy wire in a housing composed of a base member and a cover member (see Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: U.S. Patent Application Publication No. 2018 / 0149142 Summary of the invention

[0006] Problems to be solved by the invention

[0007] The shape memory alloy wire used in the above-mentioned device becomes relaxed when no current flows. Therefore, when the cover component is assembled to the base component, for example, there is a risk that the shape memory alloy wire is sandwiched between the cover component and the base component. Therefore, it is desirable to provide an optical component driving device that can prevent the shape memory alloy wire from being sandwiched between the base component and the cover component.

[0008] Means for solving problems

[0009] An optical component driving device according to an embodiment of the present disclosure comprises: a base component; an optical component holding component having an opening in which the optical component can be arranged and which passes through in the up-down direction, and being movably arranged relative to the base component; a cover component having a top plate portion and an upper peripheral wall portion, the top plate portion being opposed to the base component in the up-down direction via the optical component holding component, the upper peripheral wall portion comprising a plurality of upper side plate portions extending downward from the outer edge portion of the top plate portion; and a plurality of shape memory alloy wires, arranged on the inner side of the upper peripheral wall portion, one end of which is fixed to a fixed side of the base component. The optical component holding component has one end fixed to a movable side component including the optical component holding component, so that the optical component holding component moves relative to the base component, wherein the fixed side component includes a shell component that accommodates the base component and is open at the top, the shell component having a bottom plate portion arranged on the lower side of the base component and a lower peripheral wall portion including a plurality of lower side plate portions extending upward from the outer edge portion of the bottom plate portion, the lower side plate portion being located between the shape memory alloy wire and the upper side plate portion of the upper peripheral wall portion constituting the cover component, and being opposite to the shape memory alloy wire.

[0010] Effects of the Invention

[0011] The above-mentioned optical component driving device can suppress the shape memory alloy wire from being caught between the base member and the cover member. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a perspective view of a lens driving device.

[0013] Figure 2 It is an exploded perspective view of the lens driving device.

[0014] Figure 3 It is a perspective view of a lens holding component to which various components are mounted.

[0015] Figure 4 It is a three-dimensional view of the base assembly on which various components are mounted.

[0016] Figure 5 This is a front view of the metal parts and the shape memory alloy wire.

[0017] Figure 6 It is a left side view of the metal component and the shape memory alloy wire.

[0018] Figure 7 It is a three-dimensional diagram of metal parts, leaf springs, conductive parts, and shape memory alloy wires.

[0019] Figure 8 It is a diagram showing an example of the path of the current flowing through the shape memory alloy wire.

[0020] Fig. 9 This is a diagram showing another example of the path of the current flowing through the shape memory alloy wire.

[0021] Fig.10 This is a diagram showing still another example of the path of the current flowing through the shape memory alloy wire.

[0022] Fig.11 This is a diagram showing still another example of the path of the current flowing through the shape memory alloy wire.

[0023] Fig.12 FIG. 1 is a diagram showing an example of a path of current flowing through the inner leaf spring.

[0024] Fig.13 It is a top view of the shell component, metal component and base component.

[0025] Fig.14 It is a front view of the lens driving device.

[0026] Fig.15 It is a left side view of the lens drive device.

[0027] Fig.16 4 is a top view of the first fixing portion of the base member.

[0028] Fig.17 4 is a top view of the second fixing portion of the base member.

[0029] Fig.18 This is a front view of the shell component, metal component, and shape memory alloy wire.

[0030] Fig.19 This is a bottom view of the leaf spring.

[0031] Fig. 20 It is a three-dimensional image of the material being processed.

[0032] Fig.21 It is a three-dimensional diagram of a leaf spring made of processed materials.

[0033] Fig. 22 This is a perspective view of a part of the removed portion constituting the processed material. DETAILED DESCRIPTION

[0034] Hereinafter, a lens driving device 100 as an example of an optical component driving device according to an embodiment of the present application will be described with reference to the drawings. Figure 1 is a perspective view of the lens driving device 100. Specifically, Figure 1 The upper figure is a top perspective view of the lens driving device 100. Figure 1 The lower figure is a bottom stereoscopic view of the lens driving device 100. Figure 2 It is an exploded perspective view of the lens driving device 100 .

[0035] exist Figure 1 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. 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. 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 In the figure, with the center point of the lens driving device 100 as a reference, the X1 side of the lens driving device 100 is equivalent to the front side (front side) of the lens driving device 100, and the X2 side of the lens driving device 100 is equivalent to the rear side (back side) of the lens driving device 100. The Y1 side of the lens driving device 100 is equivalent to the left side of the lens driving device 100, and the Y2 side of the lens driving device 100 is equivalent to the right side of the lens driving device 100. The Z1 side of the lens driving device 100 is equivalent to the upper side (subject side) of the lens driving device 100, and the Z2 side of the lens driving device 100 is equivalent to the lower side (imaging element side) of the lens driving device 100. "Outside" means the side farther than the "inside" when viewed from the reference. The same applies to other components in other figures.

[0036] The lens driving device 100 is a device for driving a lens body LS as an example of an optical component. Figure 2 In the figure, for the sake of clarity, only the general shape of the lens body LS is shown by the dotted line. The lens driving device 100, the lens body LS held by the lens holding component 2 of the lens driving device 100, and the imaging element IS arranged in a manner opposite to the lens body LS constitute a camera module as an example of an optical module. An infrared cut filter (IR cut filter) may also be arranged between the lens body LS and the imaging element IS. In addition, the optical component may also be an optical module (camera module). In this case, the optical component driving device functions as an optical module driving device. Alternatively, the optical component may also be an imaging element IS. In this case, the optical component driving device functions as an imaging element driving device.

[0037] like Figure 1 as well as Figure 2 As shown, the lens driving device 100 includes a cover member 3 and a housing member 4. The cover member 3 and the housing member 4 are configured to function as a box HS covering each member. In the example shown in the figure, the cover member 3 is formed of a non-magnetic metal, and the housing member 4 is formed of a magnetic metal. However, the cover member 3 may also be formed of a magnetic metal, and the housing member 4 may also be formed of a non-magnetic metal.

[0038] The cover member 3 has an upper peripheral wall portion 3A in a generally rectangular cylindrical shape and a top plate portion 3B in a generally rectangular ring shape and in a flat plate shape which is provided continuously with the upper end (the end portion on the Z1 side) of the upper peripheral wall portion 3A. A generally circular opening 3K is formed in the center of the top plate portion 3B. In the example shown in the figure, the top plate portion 3B is flat (in a flat plate shape) and has no concavoconvexity, but it may have concavoconvexity and may have a step.

[0039] The upper peripheral wall portion 3A includes a first upper side plate portion 3A1 to a fourth upper side plate portion 3A4. The first upper side plate portion 3A1 and the third upper side plate portion 3A3 are opposite to each other, and the second upper side plate portion 3A2 and the fourth upper side plate portion 3A4 are opposite to each other. Moreover, the first upper side plate portion 3A1 and the third upper side plate portion 3A3 extend vertically relative to the second upper side plate portion 3A2 and the fourth upper side plate portion 3A4. The upper peripheral wall portion 3A includes an upper corner plate portion 3C located between two adjacent upper side plate portions. Specifically, the upper peripheral wall portion 3A includes a first upper angle plate portion 3C1 located between the first upper side plate portion 3A1 and the fourth upper side plate portion 3A4, a second upper angle plate portion 3C2 located between the first upper side plate portion 3A1 and the second upper side plate portion 3A2, a third upper angle plate portion 3C3 located between the second upper side plate portion 3A2 and the third upper side plate portion 3A3, and a fourth upper angle plate portion 3C4 located between the third upper side plate portion 3A3 and the fourth upper side plate portion 3A4.

[0040] The housing member 4 has a generally rectangular cylindrical lower peripheral wall portion 4A and a generally rectangular ring-shaped and flat bottom plate portion 4B provided in a manner continuous with the lower end (end on the Z2 side) of the lower peripheral wall portion 4A. A generally circular opening 4K is formed in the center of the bottom plate portion 4B. In the illustrated example, the bottom plate portion 4B is flat (flat) and has no concavoconvexity, but may have concavoconvexity or may have a step.

[0041] The lower peripheral wall portion 4A includes a first lower side plate portion 4A1 to a fourth lower side plate portion 4A4. The first lower side plate portion 4A1 and the third lower side plate portion 4A3 are opposite to each other, and the second lower side plate portion 4A2 and the fourth lower side plate portion 4A4 are opposite to each other. Moreover, the first lower side plate portion 4A1 and the third lower side plate portion 4A3 extend vertically relative to the second lower side plate portion 4A2 and the fourth lower side plate portion 4A4. In addition, the lower peripheral wall portion 4A includes a lower corner plate portion 4C located between two adjacent lower side plate portions. Specifically, the lower peripheral wall portion 4A includes a first lower angle plate portion 4C1 located between the first lower side plate portion 4A1 and the fourth lower side plate portion 4A4, a second lower angle plate portion 4C2 located between the first lower side plate portion 4A1 and the second lower side plate portion 4A2, a third lower angle plate portion 4C3 located between the second lower side plate portion 4A2 and the third lower side plate portion 4A3, and a fourth lower angle plate portion 4C4 located between the third lower side plate portion 4A3 and the fourth lower side plate portion 4A4.

[0042] The cover part 3 is joined to the housing part 4 by an adhesive. The upper peripheral wall part 3A is combined with the lower peripheral wall part 4A in a manner of partially covering the lower peripheral wall part 4A. The adhesive is a moisture-curing adhesive, a thermosetting adhesive, a light-curing adhesive, or a combination thereof. The same applies to the adhesive described later.

[0043] like Figure 2 As shown, a plate-like member 1, a lens holding member 2, a metal member 5, a leaf spring 6, a base member 8, a shape memory alloy wire SA, and the like are accommodated in the housing HS.

[0044] The movable side member MB includes a lens holding member 2 capable of holding a lens body LS. The lens body LS is, for example, a cylindrical lens barrel having at least one lens, and is configured such that its central axis is along the optical axis OA. The fixed side member FB includes a plate-like member 1, a cover member 3, a housing member 4, and a base member 8.

[0045] The lens holding member 2 is an example of an optical component holding member, and is formed by injection molding a synthetic resin such as a liquid crystal polymer (LCP). Figure 2As shown in the figure, the lens holding member 2 includes a cylindrical portion 2P formed to extend along the optical axis OA, a movable side seat portion 2D formed to protrude radially outward from the cylindrical portion 2P, and a protruding portion 2S. In the example shown in the figure, the lens body LS is configured to be fixed to the inner peripheral surface of the cylindrical portion 2P by an adhesive. That is, the inner side of the cylindrical portion 2P becomes an opening 2K that penetrates in the up-down direction (Z-axis direction), and at least a part of the lens body LS is configured to be arranged in the opening 2K.

[0046] 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 so as to protrude in opposite directions across the optical axis OA. 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 so as to protrude in opposite directions across the optical axis OA. 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 having a substantially rectangular shape when viewed from above, and are configured in an alternating arrangement. Furthermore, a portion of the leaf spring 6 is placed on each of the two movable side seat portions 2D.

[0047] The shape memory alloy wire SA is an example of a shape memory driver. In the example shown in the figure, the shape memory alloy wire SA includes a first wire SA1 to an eighth wire SA8 having substantially the same length and substantially the same diameter. If a current flows through the shape memory alloy wire SA, the temperature rises, and the shape memory alloy wire SA contracts in accordance with the rise in its temperature. In addition, the shape memory alloy wire SA is in a relaxed state in the initial state. The initial state is a state when no power is supplied to the drive unit DM and no current flows in the shape memory alloy wire SA.

[0048] The driving unit DM is composed of a shape memory alloy wire SA. In the example shown in the figure, the driving unit DM can use the contraction of the shape memory alloy wire SA to move the lens holding member 2 relative to the base member 8. In the example shown in the figure, the driving unit DM is configured so that if one or more of the first wire SA1 to the eighth wire SA8 are contracted, the lens holding member 2 moves, and through its movement, another one or more of the first wire SA1 to the eighth wire SA8 is stretched (extended).

[0049] 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). In the example shown in the figure, the leaf spring 6 is made by stamping and includes an outer leaf spring 6A and an inner leaf spring 6B. The outer leaf spring 6A includes a first outer leaf spring 6A1 and a second outer leaf spring 6A2. The inner leaf spring 6B includes a first inner leaf spring 6B1 to a fourth inner leaf spring 6B4. In addition, in the example shown in the figure, the inner leaf spring 6B is separated into four parts (the first inner leaf spring 6B1 to the fourth inner leaf spring 6B4), but at least two of the four parts may be connected.

[0050] In the example shown in the figure, the outer leaf spring 6A and the inner leaf spring 6B are respectively configured to function as a conductive path. Specifically, the outer leaf spring 6A is configured to be electrically connected to the shape memory alloy wire SA through the metal component 5. The inner leaf spring 6B is configured to be electrically connected to an electrical device such as a variable aperture device installed on the lens holding component 2. That is, the first inner leaf spring 6B1 to the fourth inner leaf spring 6B4 are respectively configured to be electrically connected to the electrode terminal of the electrical device that moves together with the lens holding component 2. In addition, a plurality of electrical devices may be installed on the lens holding component 2.

[0051] The plate-like component 1 is an example of an insulating component IM that electrically insulates each of the plurality of leaf springs 6 (the first outer leaf spring 6A1, the second outer leaf spring 6A2, and the first inner leaf spring 6B1 to the fourth inner leaf spring 6B4). In the example shown in the figure, the plate-like component 1 is a plate-like metal component that is fixed to the lower surface of the top plate portion 3B of the cover component 3. In addition, an insulating coating agent is applied to the lower surface of the plate-like component 1, which is the surface on the side opposite to the leaf spring 6.

[0052] With this configuration, the plate-like member 1 can prevent the cover member 3 from contacting the leaf spring 6 . Therefore, the plate-like member 1 can prevent two of the plurality of leaf springs 6 from being electrically connected (short-circuited) via the cover member 3 .

[0053] In the example shown in the figure, the plate-like member 1 includes an upper plate portion 1B opposed to the top plate portion 3B of the cover member 3, and four bent portions 1A (first bent portion 1A1 to fourth bent portion 1A4) bent downward from the outer edge of the upper plate portion 1B. An insulating coating agent is applied to the inner surfaces of the four bent portions 1A (first bent portion 1A1 to fourth bent portion 1A4).

[0054] The four bent portions 1A are respectively opposed to the corresponding side plate portions (first upper side plate portion 3A1 to fourth upper side plate portion 3A4) of the cover member 3. Specifically, the first bent portion 1A1 is in opposing contact with the first upper side plate portion 3A1, the second bent portion 1A2 is in opposing contact with the second upper side plate portion 3A2, the third bent portion 1A3 is in opposing contact with the third upper side plate portion 3A3, and the fourth bent portion 1A4 is in opposing contact with the fourth upper side plate portion 3A4.

[0055] The plate-like member 1 is fixed to the lower surface (ceiling surface) of the cover member 3 by means of the conductive adhesive AD1 and the insulating adhesive AD2. Figure 2 In the figure, for the sake of clarity, a cross pattern is given to the conductive adhesive AD1, and a diagonal line pattern is given to the insulating adhesive AD2.

[0056] The base member 8 is formed by injection molding using a synthetic resin such as a liquid crystal polymer (LCP). In the example shown in the figure, the base member 8 has a substantially rectangular outline when viewed from above, and has an opening 8K in the center. Specifically, the base member 8 has four sides 8E (first side 8E1 to fourth side 8E4) arranged in a manner surrounding the opening 8K.

[0057] 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 8D formed on the base member 8. The fixed side seat portion 8D includes a first fixed side seat portion 8D1 and a second fixed side seat portion 8D2.

[0058] More specifically, the first outer leaf spring 6A1 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 8D1 and the second fixed side seat portion 8D2 formed on the base member 8. The second outer leaf spring 6A2 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 8D1 and the second fixed side seat portion 8D2 formed on the base member 8.

[0059] The first inner leaf spring 6B1 is configured to connect the first movable side seat portion 2D1 formed on the lens holding member 2 and the first fixed side seat portion 8D1 formed on the base member 8. The second inner leaf spring 6B2 is configured to connect the first movable side seat portion 2D1 formed on the lens holding member 2 and the second fixed side seat portion 8D2 formed on the base member 8. The third inner leaf spring 6B3 is configured to connect the second movable side seat portion 2D2 formed on the lens holding member 2 and the second fixed side seat portion 8D2 formed on the base member 8. The fourth inner leaf spring 6B4 is configured to connect the second movable side seat portion 2D2 formed on the lens holding member 2 and the first fixed side seat portion 8D1 formed on the base member 8.

[0060] The metal component 5 is configured to fix the end of the shape memory alloy wire SA. In the example shown in the figure, the metal component 5 includes a fixed side metal component 5F and a movable side metal component 5M. The fixed side metal component 5F constitutes a part of the fixed side component FB and is configured to be fixed to the fixed side seat portion 8D of the base component 8. The movable side metal component 5M constitutes a part of the movable side component MB and is configured to be fixed to the movable side seat portion 2D of the lens holding component 2.

[0061] More specifically, the fixed side metal component 5F is also called a fixed side terminal plate, and includes a first fixed side terminal plate 5F1 to an eighth fixed side terminal plate 5F8. The movable side metal component 5M is also called a movable side terminal plate, and includes a first movable side terminal plate 5M1 to a fourth movable side terminal plate 5M4.

[0062] The shape memory alloy wire SA extends along the inner surface IF of the lower peripheral wall portion 4A of the housing member 4, and is configured to enable the movable side member MB to move relative to the fixed side member FB. In the example shown in the figure, 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 8 as the fixed side member FB. Figure 2 As shown, one end of each of the first to eighth wires SA1 to SA8 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.

[0063] The base member 8 is configured to function as a wire support member that supports one end of each of the first wire SA1 to the eighth wire SA8. With this configuration, the drive unit DM can, in principle, achieve six degrees of freedom of movement of the lens holding member 2 by extending and retracting each of the first wire SA1 to the eighth wire SA8. The six degrees of freedom of movement include translation along the X axis, translation along the Y axis, translation along the Z axis, rotation around the X axis, rotation around the Y axis, and rotation around the Z axis.

[0064] Next, refer to Figure 3 as well as Figure 4 , various components respectively mounted on the lens holding component 2 and the base component 8 will be described. Figure 3 It is a perspective view of the lens holding member 2 to which various components are mounted. Figure 4 It is a perspective view of the base member 8 on which various components are mounted.

[0065] like Figure 3As shown, the first movable side terminal plate 5M1 is fixed to the side wall on the X1 side of the first movable side seat portion 2D1. Specifically, the first movable side terminal plate 5M1 is fixed to the first movable side seat portion 2D1 by an adhesive in a state where a prismatic protrusion formed on the first movable side seat portion 2D1 and protruding outward (X1 side) is engaged with a rectangular hole formed on the first movable side terminal plate 5M1. Similarly, the second movable side terminal plate 5M2 is fixed to the side wall on the Y1 side of the first movable side seat portion 2D1, the third movable side terminal plate 5M3 is fixed to the side wall on the X2 side of the second movable side seat portion 2D2, 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.

[0066] like Figure 4 As shown, the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are fixed to the side wall of the first fixed side seat portion 8D1 on the X1 side. Specifically, the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2 are fixed to the first fixed side seat portion 8D1 by an adhesive. More specifically, the first fixed side terminal plate 5F1 is fixed to the first fixed side seat portion 8D1 by an adhesive in a state where a protrusion formed on the first fixed side seat portion 8D1 and protruding outward (X1 side) is engaged with a through hole formed on the first fixed side terminal plate 5F1. The same is true for the second fixed side terminal plate 5F2. Similarly, the third fixed side terminal board 5F3 and the fourth fixed side terminal board 5F4 are fixed to the side wall on the Y1 side of the second fixed side seat portion 8D2 of the base part 8, the fifth fixed side terminal board 5F5 and the sixth fixed side terminal board 5F6 are fixed to the side wall on the X2 side of the second fixed side seat portion 8D2 of the base part 8, and the seventh fixed side terminal board 5F7 and the eighth fixed side terminal board 5F8 are fixed to the side wall on the Y2 side of the first fixed side seat portion 8D1 of the base part 8.

[0067] Figure 4 The conductive member CM is formed of a metal plate containing copper, iron, or an alloy thereof as a main component, and is embedded in the base member 8 by insert molding. In the example shown in the figure, the conductive member CM is formed of a magnetic metal and includes first to tenth conductive members CM1 to CM10.

[0068] A through hole 4H (see FIG. 4 ) for exposing the terminal portion of the conductive member CM is formed at the lower end portion of the lower peripheral wall portion 4A of the case member 4. Figure 2). Specifically, the through hole 4H includes a first through hole 4H1 formed in the center of the lower end of the first lower side plate portion 4A1 and a second through hole 4H2 formed in the center of the lower end of the third lower side plate portion 4A3. The first through hole 4H1 is formed to expose the terminal portions of the first conductive component CM1 to the fifth conductive component CM5, the first fixed side terminal plate 5F1, and the second fixed side terminal plate 5F2. The second through hole 4H2 is formed to expose the terminal portions of the sixth conductive component CM6 to the tenth conductive component CM10, the fifth fixed side terminal plate 5F5, and the sixth fixed side terminal plate 5F6.

[0069] like Figure 3 as well as Figure 4 As shown in FIG. 1 , a vibration-damping member DP is installed between the lens holding member 2 and the base member 8. The vibration-damping member DP is a member for suppressing the vibration of the lens holding member 2. In the example shown in the figure, the vibration-damping member DP is formed on the outer wall of the cylindrical portion 2P of the lens holding member 2 by a receiving surface 2V (see FIG. Figure 3 ), and the receiving surface 8V (see Figure 4 ) is cured or semi-cured, thereby forming a gelled component.

[0070] like Figure 3 As shown in FIG. 1 , a magnet MG is mounted on the lens holding component 2. The magnet MG is used to position the lens holding component 2 when the lens holding component 2 is in an initial state (initial position). The initial state (initial position) of the lens holding component 2 is a state (position) of the lens holding component 2 when no power is supplied to the drive unit DM and no current flows in the shape memory alloy wire SA. In addition, the initial state (initial position) of the lens holding component 2 may also be a neutral state (neutral position) of the lens holding component 2.

[0071] The neutral state of the lens holding component 2 means that when the lens body LS can be translated in the Z-axis direction relative to the housing HS of the lens driving device 100, the lens body LS is located in the middle of the movable range in the Z-axis direction. Typically, in the neutral state of the lens holding component 2, the lens body LS is located in the center of the movable range in the Z-axis direction. The same is true for the case where the lens body LS can be translated in the X-axis direction, the case where the lens body LS can be translated in the Y-axis direction, the case where the lens body LS can be rotated around the X-axis, the case where the lens body LS can be rotated around the Y-axis, and the case where the lens body LS can be rotated around the Z-axis. In addition, in the example shown in the figure, since the initial position of the lens holding component 2 in the Z-axis direction is located at the lowermost side (Z2 side), the initial position of the lens holding component 2 in the Z-axis direction is different from the neutral position of the lens holding component 2 in the Z-axis direction.

[0072] Specifically, in the example shown in the figure, the magnet MG includes a first magnet MG1 housed in a recess formed on the upper surface of the first protruding portion 2S1 and a second magnet MG2 housed in a recess formed on the upper surface of the second protruding portion 2S2. The lens holding member 2 is provided with a positioning plate LP (see FIG. 1 ) acting on the first magnet MG1 and the tenth conductive member CM10 embedded in the base member 8. Figure 4 ) and the magnetic attraction between the second magnet MG2 and the positioning plate LP (refer to Figure 4 ) between the first magnet MG1 and the second magnet MG2, and is positioned as a neutral position in the X-axis direction and the Y-axis direction. That is, when no power is supplied to the drive unit DM, the lens holding component 2 is moved to a neutral position in the X-axis direction and the Y-axis direction by the magnet MG, so that the positioning plate LP of the tenth conductive component CM10 is opposite to the first magnet MG1, and the positioning plate LP of the third conductive component CM3 is opposite to the second magnet MG2. However, in the initial state, since the lens holding component 2 abuts against the upper surface of the base component 8, it does not become a neutral position in the Z-axis direction. In addition, in the example shown in the figure, the shell component 4 is formed of a magnetic metal so that the magnetic attraction acts between the bottom plate portion 4B and the magnet MG, that is, the lens holding component 2 can be attracted downward. On the contrary, the cover component 3 is formed of a non-magnetic metal so that the magnetic attraction does not act between the top plate portion 3B and the magnet MG, that is, the lens holding component 2 is not attracted upward.

[0073] Each of the leaf springs 6 includes a fixed support portion 6F fixed to the fixed-side member FB, a movable support portion 6M fixed to the movable-side member MB, and an elastically deformable elastic arm portion 6E provided to connect the fixed support portion 6F and the movable support portion 6M.

[0074] Specifically, the first outer leaf spring 6A1 includes a fixed support portion 6FA1 fixed to the fixed side seat portion 8D, a movable support portion 6MA1 fixed to the movable side seat portion 2D, and an elastic arm portion 6EA1 connecting the fixed support portion 6FA1 and the movable support portion 6MA1. Furthermore, the fixed support portion 6FA1 includes a fixed support portion 6FA11 fixed to the first fixed side seat portion 8D1 and a fixed support portion 6FA12 fixed to the second fixed side seat portion 8D2. The elastic arm portion 6EA1 includes an elastic arm portion 6EA11 connecting the fixed support portion 6FA11 and the movable support portion 6MA1, and an elastic arm portion 6EA12 connecting the fixed support portion 6FA12 and the movable support portion 6MA1.

[0075] The second outer leaf spring 6A2 includes a fixed support portion 6FA2 fixed to the fixed side seat portion 8D, a movable support portion 6MA2 fixed to the movable side seat portion 2D, and an elastic arm portion 6EA2 connecting the fixed support portion 6FA2 and the movable support portion 6MA2. Furthermore, the fixed support portion 6FA2 includes a fixed support portion 6FA21 fixed to the first fixed side seat portion 8D1 and a fixed support portion 6FA22 fixed to the second fixed side seat portion 8D2. The elastic arm portion 6EA1 includes an elastic arm portion 6EA21 connecting the fixed support portion 6FA21 and the movable support portion 6MA2, and an elastic arm portion 6EA22 connecting the fixed support portion 6FA22 and the movable support portion 6MA2.

[0076] The fixed support portion 6FA11 is provided with a cylindrical protrusion 8U (see Figure 4 ) is inserted through a circular through hole and a rectangular through hole for joining with the first conductive component CM1. In the example shown in the figure, the fixing of the fixed support portion 6FA11 and the protrusion 8U is achieved by hot riveting or cold riveting the protrusion 8U. However, the fixing of the fixed support portion 6FA11 and the protrusion 8U may also be achieved by an adhesive. The joining of the fixed support portion 6FA11 and the first conductive component CM1 is achieved by welding such as laser welding. However, the joining of the fixed support portion 6FA11 and the first conductive component CM1 may also be achieved by soft solder (Japanese: Handa) or a conductive adhesive. The same is true for the fixed support portion 6FA22.

[0077] The fixed support portion 6FA12 is provided with two circular through holes for inserting two cylindrical protrusions 8U formed on the second fixed side pedestal portion 8D2 and protruding upward. In the example shown in the figure, the fixing of the fixed support portion 6FA12 and the protrusion 8U is achieved by hot riveting or cold riveting the protrusion 8U. However, the fixing of the fixed support portion 6FA12 and the protrusion 8U may also be achieved by an adhesive. The same is true for the fixed support portion 6FA21.

[0078] The movable support portion 6MA1 is provided with two cylindrical protrusions 2U (see FIG. 2A ) formed on the first movable side pedestal portion 2D1 and protruding upward. Figure 3 ) are inserted through two through holes. In the example shown in the figure, the fixing of the movable support part 6MA1 and the protrusion 2U is achieved by performing hot riveting or cold riveting on the protrusion 2U. However, the fixing of the movable support part 6MA1 and the protrusion 2U can also be achieved by an adhesive. The same is true for the movable support part 6MA2.

[0079] The first inner leaf spring 6B1 includes a fixed support portion 6FB1 fixed to the first fixed side seat portion 8D1, a movable support portion 6MB1 fixed to the first movable side seat portion 2D1, and an elastic arm portion 6EB1 connecting the fixed support portion 6FB1 and the movable support portion 6MB1. The second inner leaf spring 6B2 includes a fixed support portion 6FB2 fixed to the second fixed side seat portion 8D2, a movable support portion 6MB2 fixed to the first movable side seat portion 2D1, and an elastic arm portion 6EB2 connecting the fixed support portion 6FB2 and the movable support portion 6MB2. The third inner leaf spring 6B3 includes a fixed support portion 6FB3 fixed to the second fixed side seat portion 8D2, a movable support portion 6MB3 fixed to the second movable side seat portion 2D2, and an elastic arm portion 6EB3 connecting the fixed support portion 6FB3 and the movable support portion 6MB3. The fourth inner leaf spring 6B4 includes a fixed support portion 6FB4 fixed to the first fixed-side pedestal portion 8D1 , a movable support portion 6MB4 fixed to the second movable-side pedestal portion 2D2 , and an elastic arm portion 6EB4 connecting the fixed support portion 6FB4 and the movable support portion 6MB4 .

[0080] The fixed support portion 6FB1 is provided with two cylindrical protrusions 8T (see FIG. Figure 4 ) is inserted through a through hole and a rectangular through hole for joining with the second conductive component CM2. In the example shown in the figure, the fixing of the fixed support portion 6FB1 and the protrusion 8T is achieved by hot riveting or cold riveting the protrusion 8T. However, the fixing of the fixed support portion 6FB1 and the protrusion 8T can also be achieved by an adhesive. The joining of the fixed support portion 6FB1 and the second conductive component CM2 is achieved by welding such as laser welding. However, the joining of the fixed support portion 6FB1 and the second conductive component CM2 can also be achieved by solder or a conductive adhesive. The same applies to the fixed support portions 6FB2 to 6FB4.

[0081] The movable support portion 6MB1 is provided with two cylindrical protrusions 2T (see FIG. 2 ) formed on the first movable side pedestal portion 2D1 and protruding upward. Figure 3 ) are inserted through two through holes. In the example shown in the figure, the fixing of the movable support part 6MB1 and the protrusion 2T is achieved by performing hot riveting or cold riveting on the protrusion 2T. However, the fixing of the movable support part 6MB1 and the protrusion 2T can also be achieved by an adhesive. The same is true for the movable support parts 6MB2 to 6MB4.

[0082] In addition, Figure 3 as well as Figure 4In the figure, the protrusion 2T, the protrusion 2U, the protrusion 8T and the protrusion 8U are shown in a crushed state after the heat caulking is performed. The same is true in other figures. Moreover, the protrusion 2T, the protrusion 2U, the protrusion 8T and the protrusion 8U in the crushed state are also called "caulking fixing parts".

[0083] The elastic arm portions 6EA1, 6EA2, and 6EB1 to 6EB4 are elastically deformable arms having a plurality of bends BP. Therefore, the lens holding member 2 can move relative to the base member 8 (fixed side member FB) not only in a direction parallel to the optical axis OA but also in a direction intersecting the optical axis OA.

[0084] like Figure 3 as well as Figure 4 As shown, the first outer leaf spring 6A1 and the second outer leaf spring 6A2 have substantially the same shape. Specifically, the first outer leaf spring 6A1 and the second outer leaf spring 6A2 are configured to be twice rotationally symmetrical about the optical axis OA. The first inner leaf spring 6B1 and the third inner leaf spring 6B3 have substantially the same shape. Specifically, the first inner leaf spring 6B1 and the third inner leaf spring 6B3 are configured to be twice rotationally symmetrical about the optical axis OA. The second inner leaf spring 6B2 and the fourth inner leaf spring 6B4 have substantially the same shape. Specifically, the second inner leaf spring 6B2 and the fourth inner leaf spring 6B4 are configured to be twice rotationally symmetrical about the optical axis OA.

[0085] Such a structure of the leaf spring 6 brings about an effect of reducing the number of components of the lens driving device 100. In addition, the leaf spring 6 structured in this way can support the lens holding component 2 in the air in a well-balanced manner, and will not adversely affect the weight balance of the movable side component MB respectively fixed to the eight shape memory alloy wires SA (the first wire SA1 to the eighth wire SA8).

[0086] Next, refer to Figure 5 as well as Figure 6 , the metal component 5 on which the shape memory alloy wire SA is mounted will be described. Figure 5 This is a diagram when the first wire SA1 respectively attached to the first movable terminal block 5M1 and the first fixed terminal block 5F1 and the second wire SA2 respectively attached to the first movable terminal block 5M1 and the second fixed terminal block 5F2 are viewed from the X1 side. Figure 6 This is a diagram when the first wire SA1 respectively attached to the first movable terminal plate 5M1 and the first fixed terminal plate 5F1 and the second wire SA2 respectively attached to the first movable terminal plate 5M1 and the second fixed terminal plate 5F2 are viewed from the Y1 side. Figure 5 as well as Figure 6The positional relationship of the components shown in FIG. 1 corresponds to the positional relationship when the lens driving device 100 is assembled. Figure 5 as well as Figure 6 For the sake of clarity, other components are omitted. Figure 5 as well as Figure 6 The following description is about 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.

[0087] Specifically, one end of the first wire SA1 is fixed to the first fixed side terminal plate 5F1 at the holding portion J1 of the first fixed side terminal plate 5F1, and the other end of the first wire SA1 is fixed to the first movable side terminal plate 5M1 at the holding portion J2 on the lower side of the first movable side terminal plate 5M1. Similarly, one end of the second wire SA2 is fixed to the second fixed side terminal plate 5F2 at the holding portion J3 of the second fixed side terminal plate 5F2, and the other end of the second wire SA2 is fixed to the first movable side terminal plate 5M1 at the holding portion J4 on the upper side of the first movable side terminal plate 5M1.

[0088] In the example shown in the figure, the holding portion J1 is formed by bending a portion of the first fixed side terminal plate 5F1. Specifically, a portion of the first fixed side terminal plate 5F1 is bent while clamping one end of the first wire SA1, thereby forming the holding portion J1. Moreover, one end of the first wire SA1 is fixed to the holding portion J1 by welding. The same is true for the holding portions J2 to J4.

[0089] The plate-shaped portions PM of the plurality of metal components 5 are arranged parallel to each other. Figure 6 In the example shown, the plate-like portion PM1 of the first fixed-side terminal plate 5F1, the plate-like portion PM2 of the second fixed-side terminal plate 5F2, and the plate-like portion PM11 of the first movable-side terminal plate 5M1 are arranged parallel to each other along the YZ plane. That is, the plate-like portion PM1, the plate-like portion PM2, and the plate-like portion PM11 are arranged parallel to each other along the inner surface IF of the lower peripheral wall portion 4A.

[0090] like Figure 5 as well as Figure 6 As shown, the first line SA1 and the second line SA2 are arranged in a mutually twisted position relationship (three-dimensionally intersecting when viewed from the X1 side). That is, the first line SA1 and the second line SA2 are arranged so as not to contact each other (non-contact).

[0091] Specifically, in the main view (see Figure 5), the first line SA1 is configured in such a manner that one end (the end on the fixed side) is located higher than the other end (the end on the movable side), the second line SA2 is configured in such a manner that the other end (the end on the movable side) is located higher than one end (the end on the fixed side), and the first line SA1 and the second line SA2 are configured in such a manner that they cross each other. Similarly, in the left view observed from the Y1 side, the third line SA3 is configured in such a manner that one end is located higher than the other end, the fourth line SA4 is configured in such a manner that the other end is located higher than one end, and the third line SA3 and the fourth line SA4 are configured in such a manner that they cross each other. In the rear view observed from the X2 side, the fifth line SA5 is configured in such a manner that one end is located higher than the other end, the sixth line SA6 is configured in such a manner that the other end is located higher than one end, and the fifth line SA5 and the sixth line SA6 are configured in such a manner that they cross each other. When viewed from the right side from the Y2 side, the seventh line SA7 is configured so that one end thereof is higher than the other end thereof, and the eighth line SA8 is configured so that the other end thereof is higher than one end thereof, and the seventh line SA7 and the eighth line SA8 are configured so as to intersect each other.

[0092] That is, when viewed from the side, the first line SA1 to the eighth line SA8 are all arranged to extend obliquely (non-parallel) relative to the X-axis and the Y-axis. However, the first line SA1 and the second line SA2 only need to be arranged to extend obliquely when viewed from the front, and do not need to cross each other when viewed from the front. The same is true for the relationship between the third line SA3 and the fourth line SA4, the relationship between the fifth line SA5 and the sixth line SA6, and the relationship between the seventh line SA7 and the eighth line SA8.

[0093] Next, refer to Figure 7 The positional relationship among the metal member 5 , the leaf spring 6 , the conductive member CM, and the shape memory alloy wire SA will be described. Figure 7 It is a perspective view of the metal member 5 , the leaf spring 6 , the conductive member CM, and the shape memory alloy wire SA.

[0094] The first movable side terminal plate 5M1 is vertically joined to the movable support portion 6MA1 of the first outer leaf spring 6A1 by a joining material. The joining material is, for example, solder or a conductive adhesive. That is, the first movable side terminal plate 5M1 and the movable support portion 6MA1 are joined in a state where the surfaces of each other are approximately perpendicular. Similarly, the second movable side terminal plate 5M2 is vertically joined to the movable support portion 6MA1 of the first outer leaf spring 6A1 by a joining material, and the third movable side terminal plate 5M3 and the fourth movable side terminal plate 5M4 are vertically joined to the movable support portion 6MA2 of the second outer leaf spring 6A2 by a joining material.

[0095] On the other hand, the first fixed-side terminal plate 5F1 is configured separately from the fixed support portion 6FA11 of the first outer leaf spring 6A1, and does not contact the fixed support portion 6FA11. Similarly, the third fixed-side terminal plate 5F3 is configured separately from the fixed support portion 6FA12 of the first outer leaf spring 6A1, and does not contact the fixed support portion 6FA12. The fifth fixed-side terminal plate 5F5 is configured separately from the fixed support portion 6FA22 of the second outer leaf spring 6A2, and does not contact the fixed support portion 6FA22. The seventh fixed-side terminal plate 5F7 is configured separately from the fixed support portion 6FA21 of the second outer leaf spring 6A2, and does not contact the fixed support portion 6FA21.

[0096] The first conductive member CM1 is welded by laser welding or the like at a rectangular through hole formed in the fixed support portion 6FA11 of the first outer leaf spring 6A1 and joined to the fixed support portion 6FA11 in parallel. That is, the first conductive member CM1 and the fixed support portion 6FA11 are joined in a state where the surfaces of each other are substantially parallel. Similarly, the sixth conductive member CM6 is welded by laser welding or the like at a rectangular through hole formed in the fixed support portion 6FA22 of the second outer leaf spring 6A2 and joined to the fixed support portion 6FA22 in parallel.

[0097] In addition, the second conductive member CM2 is welded by laser welding or the like at the rectangular through hole formed in the fixed support portion 6FB1 of the first inner leaf spring 6B1 and joined to the fixed support portion 6FB1 in parallel. The third conductive member CM3 is welded by laser welding or the like at the rectangular through hole formed in the fixed support portion 6FB2 of the second inner leaf spring 6B2 and joined to the fixed support portion 6FB2 in parallel. The seventh conductive member CM7 is welded by laser welding or the like at the rectangular through hole formed in the fixed support portion 6FB3 of the third inner leaf spring 6B3 and joined to the fixed support portion 6FB3 in parallel. The tenth conductive member CM10 is welded by laser welding or the like at the rectangular through hole formed in the fixed support portion 6FB4 of the fourth inner leaf spring 6B4 and joined to the fixed support portion 6FB4 in parallel.

[0098] Next, refer to Figure 8 to Figure 11 , the path of the current flowing through the shape memory alloy wire SA is described. Figure 8 to Figure 11 yes Figure 7 A perspective view of a portion of the structure shown.

[0099] Specifically, Figure 8 The left figure shows the path of the current flowing through the first line SA1 when the terminal portion of the first fixed side terminal plate 5F1 is connected to a high potential and the terminal portion of the first conductive member CM1 is connected to a low potential. Figure 8The right figure of FIG. 5 shows the path of the current flowing through the second line SA2 when the terminal portion of the second fixed-side terminal plate 5F2 is connected to a high potential and the terminal portion of the first conductive member CM1 is connected to a low potential. Fig. 9 The left figure of shows the path of the current flowing through the third line SA3 when the terminal portion of the fifth conductive member CM5 is connected to a high potential and the terminal portion of the first conductive member CM1 is connected to a low potential. Fig. 9 The right figure of shows the path of the current flowing through the fourth line SA4 when the terminal portion of the fourth conductive member CM4 is connected to a high potential and the terminal portion of the first conductive member CM1 is connected to a low potential. Fig.10 The left figure shows the path of the current flowing through the fifth line SA5 when the terminal portion of the fifth fixed-side terminal plate 5F5 is connected to a high potential and the terminal portion of the sixth conductive member CM6 is connected to a low potential. Fig.10 The right figure of shows the path of the current flowing through the sixth line SA6 when the terminal portion of the sixth fixed-side terminal plate 5F6 is connected to a high potential and the terminal portion of the sixth conductive member CM6 is connected to a low potential. Fig.11 The left figure shows the path of the current flowing through the seventh line SA7 when the terminal portion of the eighth conductive member CM8 is connected to the high potential and the terminal portion of the sixth conductive member CM6 is connected to the low potential. Fig.11 The right figure of shows the path of the current flowing through the eighth line SA8 when the terminal portion of the ninth conductive member CM9 is connected to the high potential and the terminal portion of the sixth conductive member CM6 is connected to the low potential.

[0100] If the terminal portion of the first fixed-side terminal plate 5F1 is connected to a high potential, and the terminal portion of the first conductive member CM1 is connected to a low potential, the current is as follows: Figure 8 Specifically, the current flows through the first wire SA1 through the first fixed-side terminal plate 5F1, the first wire SA1, the first movable-side terminal plate 5M1, and the first outer leaf spring 6A1, and into the first conductive member CM1.

[0101] If the terminal portion of the second fixed-side terminal plate 5F2 is connected to a high potential, and the terminal portion of the first conductive member CM1 is connected to a low potential, the current is as follows: Figure 8 Specifically, the current flows through the second wire SA2 as shown by the arrow AR2 in the right figure. Specifically, the current flows into the first conductive member CM1 through the second fixed terminal plate 5F2, the second wire SA2, the first movable terminal plate 5M1, and the first outer leaf spring 6A1.

[0102] If the terminal portion of the fifth conductive component CM5 is connected to a high potential, and the terminal portion of the first conductive component CM1 is connected to a low potential, the current is as follows Fig. 9Specifically, the current flows into the first conductive member CM1 through the fifth conductive member CM5, the third fixed side terminal plate 5F3, the third wire SA3, the second movable side terminal plate 5M2 and the first outer leaf spring 6A1. The rear end of the fifth conductive member CM5 is joined to the lower end of the adjacent third fixed side terminal plate 5F3 by a joining material.

[0103] If the terminal portion of the fourth conductive component CM4 is connected to a high potential, and the terminal portion of the first conductive component CM1 is connected to a low potential, the current is as follows Fig. 9 Specifically, the current flows into the first conductive member CM1 through the fourth conductive member CM4, the fourth fixed side terminal plate 5F4, the fourth wire SA4, the second movable side terminal plate 5M2 and the first outer leaf spring 6A1. The rear end of the fourth conductive member CM4 is joined to the lower end of the adjacent fourth fixed side terminal plate 5F4 by a joining material.

[0104] If the terminal portion of the fifth fixed-side terminal plate 5F5 is connected to a high potential, and the terminal portion of the sixth conductive member CM6 is connected to a low potential, the current is as follows: Fig.10 Specifically, the current flows through the fifth wire SA5 as indicated by the arrow AR5 in the left figure. Specifically, the current flows into the sixth conductive member CM6 via the fifth fixed terminal plate 5F5, the fifth wire SA5, the third movable terminal plate 5M3, and the second outer leaf spring 6A2.

[0105] If the terminal portion of the sixth fixed-side terminal plate 5F6 is connected to a high potential, and the terminal portion of the sixth conductive member CM6 is connected to a low potential, the current is as follows: Fig.10 Specifically, the current flows into the sixth conductive member CM6 via the sixth fixed terminal plate 5F6, the sixth wire SA6, the third movable terminal plate 5M3, and the second outer leaf spring 6A2.

[0106] If the terminal portion of the eighth conductive component CM8 is connected to a high potential, and the terminal portion of the sixth conductive component CM6 is connected to a low potential, the current is as follows Fig.11 Specifically, the current flows into the sixth conductive member CM6 through the eighth conductive member CM8, the seventh fixed-side terminal plate 5F7, the seventh wire SA7, the fourth movable-side terminal plate 5M4, and the second outer leaf spring 6A2. The front end of the eighth conductive member CM8 is joined to the lower end of the adjacent seventh fixed-side terminal plate 5F7 by a joining material.

[0107] If the terminal portion of the ninth conductive component CM9 is connected to a high potential, and the terminal portion of the sixth conductive component CM6 is connected to a low potential, the current is as follows Fig.11 Specifically, the current flows into the sixth conductive member CM6 through the ninth conductive member CM9, the eighth fixed-side terminal plate 5F8, the eighth wire SA8, the fourth movable-side terminal plate 5M4, and the second outer leaf spring 6A2. The front end of the ninth conductive member CM9 is joined to the lower end of the adjacent eighth fixed-side terminal plate 5F8 by a joining material.

[0108] In the example shown in the figure, the paths of the currents respectively flowing through the first line SA1 to the fourth line SA4 are partially repeated. Specifically, the paths of the four currents are repeated in the part passing through the first outer leaf spring 6A1 and the first conductive component CM1. Similarly, the paths of the currents respectively flowing through the fifth line SA5 to the eighth line SA8 are partially repeated. Specifically, the paths of the four currents are repeated in the part passing through the second outer leaf spring 6A2 and the sixth conductive component CM6. This configuration brings about the effect of being able to reduce the number of components. In addition, the direction of the currents respectively flowing through the first line SA1 to the eighth line SA8 can also be the opposite direction to the direction indicated by the arrow.

[0109] Next, refer to Fig.12 , describing the path of the current flowing through the inner leaf spring 6B when power is supplied to an electrical device such as a variable aperture device mounted on the lens holding member 2. Fig.12 yes Figure 7 A perspective view of a portion of the structure shown.

[0110] If the terminal portion of the second conductive member CM2 is connected to a high potential, and the terminal portion of the third conductive member CM3 is connected to a low potential, the current flows from the second conductive member CM2 through the first inner leaf spring 6B1 to the electrical device as indicated by the arrow AR11. Furthermore, the current from the electrical device flows into the third conductive member CM3 through the second inner leaf spring 6B2 as indicated by the arrow AR12. Specifically, the current flows into the third conductive member CM3 through the second conductive member CM2, the fixed support portion 6FB1, the movable support portion 6MB1, the electrical device, the movable support portion 6MB2, and the fixed support portion 6FB2.

[0111] If the terminal portion of the seventh conductive member CM7 is connected to a high potential, and the terminal portion of the tenth conductive member CM10 is connected to a low potential, the current flows from the seventh conductive member CM7 through the third inner leaf spring 6B3 to the electric device as indicated by the arrow AR13. Furthermore, the current from the electric device flows into the tenth conductive member CM10 through the fourth inner leaf spring 6B4 as indicated by the arrow AR14. Specifically, the current flows into the tenth conductive member CM10 through the seventh conductive member CM7, the fixed support portion 6FB3, the movable support portion 6MB3, the electric device, the movable support portion 6MB4, and the fixed support portion 6FB4.

[0112] The same is true for the case where current flows from the second conductive component CM2 into the seventh conductive component CM7 or the tenth conductive component CM10, the case where current flows from the third conductive component CM3 into the second conductive component CM2, the seventh conductive component CM7, or the tenth conductive component CM10, the case where current flows from the seventh conductive component CM7 into the second conductive component CM2 or the third conductive component CM3, or the case where current flows from the tenth conductive component CM10 into the second conductive component CM2, the third conductive component CM3, or the seventh conductive component CM7.

[0113] Next, refer to Fig.13 The positional relationship among the case member 4 , the metal member 5 , and the base member 8 will be described. Fig.13 4 is a top view of the housing component 4, the metal component 5 and the base component 8. Specifically, Fig.13 The above figure is a top view of the shell component 4 and the metal component 5. Fig.13 The figure below is a top view of the base member 8. Fig.13 In the figure, for the sake of clarity, the illustration of components other than the housing component 4, the metal component 5 and the base component 8 is omitted. Fig.13 In the following figure, for the sake of clarity, the inner surface IF of the lower peripheral wall portion 4A of the housing member 4 is shown by a single-dot chain line. Fig.13 The upper figure is a plan view showing the position of the movable side metal member 5M when the lens holding member 2 is in a neutral state or an initial state. In this way, the lens driving device 100 is configured so that the neutral position of the lens holding member 2 is the same as the initial position in the X-axis direction and the Y-axis direction.

[0114] like Fig.13 As shown in the above figure, the first fixed side terminal plate 5F1 to the eighth fixed side terminal plate 5F8 and the first movable side terminal plate 5M1 to the fourth movable side terminal plate 5M4 are configured to be arranged at a position away from the inner surface IF of the lower side outer peripheral wall portion 4A of the shell part 4 at a specified interval.

[0115] Specifically, the outer side surface EF1 of the plate-like portion PM of each of the third fixed side terminal plate 5F3 and the fourth fixed side terminal plate 5F4 is arranged at a position separated from the inner surface IF of the lower peripheral wall portion 4A (the second lower side plate portion 4A2) by an interval GP1. The same is true for the plate-like portions PM of each of the first fixed side terminal plate 5F1, the second fixed side terminal plate 5F2, and the fifth fixed side terminal plate 5F5 to the eighth fixed side terminal plate 5F8. The outer side surface EF2 of the plate-like portion PM of the second movable side terminal plate 5M2 is arranged at a position separated from the inner surface IF of the lower peripheral wall portion 4A (the second lower side plate portion 4A2) by an interval GP2. The interval GP2 is larger than the interval GP1. The same is true for the plate-like portions PM of each of the first movable side terminal plate 5M1, the third movable side terminal plate 5M3, and the fourth movable side terminal plate 5M4.

[0116] That is, the plate-shaped portion PM of each of the eight fixed side metal parts 5F (the first fixed side terminal plate 5F1 to the eighth fixed side terminal plate 5F8) is arranged at a position close to the inner surface IF of the lower outer peripheral wall portion 4A of the shell part 4 compared with the plate-shaped portion PM of each of the four movable side metal parts 5M (the first movable side terminal plate 5M1 to the fourth movable side terminal plate 5M4).

[0117] like Fig.13 As shown in the figure below, the four sides 8E (first side 8E1 to fourth side 8E4) of the base member 8 are respectively arranged at the fixing portion 8P (first fixing portion 8P1 to fourth fixing portion 8P4) via an adhesive AD4 (refer to Figure 14 to Figure 17 ) is adhesively fixed to the inner surface IF of the lower outer peripheral wall portion 4A of the shell part 4.

[0118] Specifically, the fixing portion 8P is a portion formed to protrude outward from the outer peripheral surface of the side portion 8E. In the example shown in the figure, the fixing portion 8P includes a first fixing portion 8P1 protruding from the outer peripheral surface of the first side portion 8E1 to the X1 side, a second fixing portion 8P2 protruding from the outer peripheral surface of the second side portion 8E2 to the Y1 side, a third fixing portion 8P3 protruding from the outer peripheral surface of the third side portion 8E3 to the X2 side, and a fourth fixing portion 8P4 protruding from the outer peripheral surface of the fourth side portion 8E4 to the Y2 side.

[0119] Next, refer to Figure 13 to Figure 15 , the adhesive reservoir AC formed on the outer side surface of the fixing portion 8P will be described. Fig.14 1 is a front view of the lens driving device 100. Specifically, Fig.14 The upper figure is a front view of the lens driving device 100 in a state where the housing HS composed of the cover member 3 and the case member 4 is mounted. Fig.14 The central figure of FIG. 1 is a front view of the lens driving device 100 in a state where the housing HS is removed. Fig.14 The following picture is Fig.14 An enlarged view of the range R1 surrounded by the dotted line in the central figure. Fig.15 1 is a left side view of the lens driving device 100. Specifically, Fig.15 The upper figure is a left side view of the lens driving device 100 in a state where the housing HS is installed. Fig.15 The central figure of FIG. 1 is a left side view of the lens driving device 100 in a state where the housing HS is removed. Fig.15 The following picture is Fig.15 An enlarged view of the range R2 surrounded by the dotted line in the central figure.

[0120] The adhesive reservoir AC is a space for accumulating the adhesive AD4 for bonding the housing member 4 and the base member 8. Specifically, the adhesive reservoir AC is as follows: Fig.13 As shown, it includes a front adhesive reservoir AC1, a left adhesive reservoir AC2, a rear adhesive reservoir AC3, and a right adhesive reservoir AC4. More specifically, the front adhesive reservoir AC1 includes a first front adhesive reservoir AC11 and a second front adhesive reservoir AC12, the left adhesive reservoir AC2 includes a first left adhesive reservoir AC21 and a second left adhesive reservoir AC22, the rear adhesive reservoir AC3 includes a first rear adhesive reservoir AC31 and a second rear adhesive reservoir AC32, and the right adhesive reservoir AC4 includes a first right adhesive reservoir AC41 and a second right adhesive reservoir AC42.

[0121] The front adhesive reservoir AC1 is formed on the outer side surface 8P1E of the first fixing portion 8P1 of the base member 8. Fig.14 As shown, the groove portion 8G (front groove portion 8G1 ) functioning as the front adhesive reservoir AC1 is formed on the outer side surface 8P1E. The front groove portion 8G1 includes a first front groove portion 8G11 and a second front groove portion 8G12.

[0122] The outer side surface 8P1E of the first fixing portion 8P1 is a flat surface that is adhesively fixed to the inner surface IF of the lower outer peripheral wall portion 4A (first lower side plate portion 4A1) via the adhesive AD4, and is configured to extend parallel to the inner surface IF.

[0123] In the example shown in the figure, the front groove 8G1 is a space formed into a substantially semicircular cross-section extending in the Z-axis direction. The adhesive AD4 applied to the lower end of the outer side surface 8P1E through the first through hole 4H1 moves upward by capillary action in the front groove 8G1 covered by the lower peripheral wall portion 4A (the first lower side plate portion 4A1). Fig.14 As shown in the figure below, it reaches the upper end of the first fixing portion 8P1. Fig.14In the following figure, a cross pattern is added to the adhesive AD4 for clarity.

[0124] Left adhesive reservoir AC2 (see Fig.13 The lower figure) is formed on the outer side surface 8P2E of the second fixing portion 8P2 of the base member 8. Specifically, Fig.15 As shown, an inclined portion 8C (left inclined portion 8C2 ) that functions as a left adhesive reservoir AC2 is formed on the outer side surface 8P2E. The left inclined portion 8C2 includes a first left inclined portion 8C21 and a second left inclined portion 8C22.

[0125] The outer side surface 8P2E of the second fixing portion 8P2 is a plane that is adhesively fixed to the inner surface IF of the lower outer peripheral wall portion 4A (second lower side plate portion 4A2) via the adhesive AD4, and is configured to extend parallel to the inner surface IF.

[0126] In the example shown in the figure, the left inclined portion 8C2 is a space formed into a substantially triangular cross-section extending in the Z-axis direction. When the base member 8 is set in the shell member 4, the adhesive AD4 applied to the inner bottom surface or the inner surface IF of the shell member 4 moves upward by capillary phenomenon in the left inclined portion 8C2 covered by the lower peripheral wall portion 4A (the second lower side plate portion 4A2), as shown in FIG. Fig.15 As shown in the figure below, it reaches the upper end of the second fixing portion 8P2. Fig.15 In the following figure, a cross pattern is added to the adhesive AD4 for clarity.

[0127] Rear adhesive reservoir AC3 (see Fig.13 The third fixing portion 8P3 of the base member 8 is formed on the outer side surface 8P3E. Specifically, a groove portion 8G (rear side groove portion 8G3) that functions as a rear side adhesive reservoir AC3 is formed on the outer side surface 8P3E. The rear side groove portion 8G3 includes a first rear side groove portion 8G31 and a second rear side groove portion 8G32.

[0128] The outer side surface 8P3E of the third fixing portion 8P3 is a plane that is adhesively fixed to the inner surface IF of the lower outer peripheral wall portion 4A (third lower side plate portion 4A3) via the adhesive AD4, and is configured to extend parallel to the inner surface IF.

[0129] In the example shown in the figure, the rear groove 8G3 is a space formed into a substantially semicircular cross-section extending in the Z-axis direction. The adhesive AD4 applied to the lower end of the outer side surface 8P3E through the second through hole 4H2 moves upward by capillary action in the rear groove 8G3 covered by the lower peripheral wall portion 4A (third lower side plate portion 4A3) and reaches the upper end of the third fixing portion 8P3.

[0130] Right adhesive reservoir AC4 (refer to Fig.13 The fourth fixing portion 8P4 of the base member 8 is formed on the outer side surface 8P4E. Specifically, the outer side surface 8P4E is provided with an inclined portion 8C (right inclined portion 8C4) functioning as the right adhesive reservoir AC4. The right inclined portion 8C4 includes a first right inclined portion 8C41 and a second right inclined portion 8C42.

[0131] The outer side surface 8P4E of the fourth fixing portion 8P4 is a plane that is adhesively fixed to the inner surface IF of the lower outer peripheral wall portion 4A (fourth lower side plate portion 4A4) via the adhesive AD4, and is configured to extend parallel to the inner surface IF.

[0132] In the example shown in the figure, the right inclined portion 8C4 is a space formed into a substantially triangular cross-section extending in the Z-axis direction. When the base member 8 is set in the case member 4, the adhesive AD4 applied to the inner bottom surface or the inner surface IF of the case member 4 moves upward by capillary action in the right inclined portion 8C4 covered by the lower peripheral wall portion 4A (fourth lower side plate portion 4A4) and reaches the upper end portion of the fourth fixing portion 8P4.

[0133] As described above, the adhesive AD4 spread between the lower peripheral wall portion 4A of the case member 4 and the fixing portion 8P of the base member 8 can firmly bond and fix the case member 4 and the base member 8 .

[0134] Next, refer to Fig.16 as well as Fig.17 , the effects brought about by the adhesive reservoir AC are described. Fig.16 Is Fig.13 The enlarged view of the range R3 surrounded by the dotted line in the figure below. Specifically, Fig.16 The upper figure shows the state before the inner surface IF of the housing member 4 and the first fixing portion 8P1 are separated due to impact or the like. Fig.16 The lower figure shows a state in which the inner surface IF of the case member 4 and the first fixing portion 8P1 are separated due to impact or the like. Fig.17 Is Fig.13 The enlarged view of the range R4 surrounded by the dotted line in the figure below. Specifically, Fig.17 The left figure shows the state before the inner surface IF of the housing member 4 and the second fixing portion 8P2 are separated due to impact or the like. Fig.17 The right figure shows the state when the inner surface IF of the housing member 4 and the second fixing portion 8P2 are separated due to impact or the like. Fig.16 as well as Fig.17 In the figure, for the sake of clarity, a cross pattern is added to the adhesive AD4.

[0135] like Fig.16As shown, the first front adhesive reservoir AC11 is configured such that the depth DH11 in the direction perpendicular to the inner surface IF (X-axis direction) is greater than the diameter DA2 of the second line SA2. In addition, the second front adhesive reservoir AC12 is configured such that the depth DH12 in the direction perpendicular to the inner surface IF (X-axis direction) is greater than the diameter DA2 of the second line SA2. In the example shown in the figure, the depth DH11 and the depth DH12 are the same size. In addition, for convenience, the depth DH (depth DH11 and depth DH12) is represented by the distance from the inner surface IF when the inner surface IF and the first fixing portion 8P1 are not separated.

[0136] This configuration has an effect of preventing the second wire SA2 in a relaxed state from entering the gap DB1 formed between the inner surface IF and the first fixing portion 8P1 when the inner surface IF of the case member 4 and the first fixing portion 8P1 are separated due to impact or the like.

[0137] like Fig.16 As shown in the following figure, even when the inner surface IF of the shell member 4 and the first fixing portion 8P1 are separated due to impact or the like, typically, the adhesive AD4 cured in the front adhesive reservoir AC1 (space formed by the front groove portion 8G1) remains attached to the inner surface IF of the shell member 4. In this case, even when the gap DB1 between the inner surface IF and the first fixing portion 8P1 is larger than the diameter DA2 of the second wire SA2, larger than the depth DH11 of the first front adhesive reservoir AC11, and larger than the depth DH12 of the second front adhesive reservoir AC12, the gap CL1 between the adhesive AD4 cured on the inner surface IF and the outer side surface 8P1E of the first fixing portion 8P1 is smaller than the diameter DA2 of the second wire SA2. Therefore, the adhesive AD4 cured on the inner surface IF can suppress the second wire SA2 in a relaxed state from entering the gap DB1. The same is true for the adhesive AD4 cured in the rear adhesive reservoir AC3.

[0138] In addition, if Fig.17 As shown, the first left adhesive reservoir AC21 is configured such that the depth DH21 in the direction perpendicular to the inner surface IF (Y-axis direction) is greater than the diameter DA4 of the fourth line SA4. In addition, the second left adhesive reservoir AC22 is configured such that the depth DH22 in the direction perpendicular to the inner surface IF (Y-axis direction) is greater than the diameter DA4 of the fourth line SA4. In the example shown in the figure, the depth DH21 is greater than the depth DH22. In addition, for convenience, in the example shown in the figure, the depth DH (depth DH21 and depth DH22) is expressed as the distance from the inner surface IF when the inner surface IF and the second fixing portion 8P2 are not separated.

[0139] This configuration brings about an effect of preventing the fourth wire SA4 in a loose state from entering the gap DB2 formed between the inner surface IF and the second fixing portion 8P2 when the inner surface IF of the case member 4 and the second fixing portion 8P2 are separated due to impact or the like.

[0140] like Fig.17 As shown in the right figure of , even when the inner surface IF of the housing member 4 and the second fixing portion 8P2 are separated due to impact or the like, typically, the adhesive AD4 cured in the left adhesive reservoir AC2 (space formed by the left inclined portion 8C2) remains attached to the inner surface IF of the housing member 4. In this case, even when the gap DB2 between the inner surface IF and the second fixing portion 8P2 is larger than the diameter DA4 of the fourth wire SA4, the gap DB2 is smaller than the depth DH21 of the first left adhesive reservoir AC21 and smaller than the depth DH22 of the second left adhesive reservoir AC22. Therefore, the adhesive AD4 attached to the inner surface IF can suppress the fourth wire SA4 in a relaxed state from entering the gap DB2. The same is true for the adhesive AD4 cured in the right adhesive reservoir AC4.

[0141] In this way, the adhesive AD4 solidified in the adhesive storage portion AC can prevent the shape memory alloy wire SA from entering the gap DB between the inner surface IF of the shell component 4 and the fixing portion 8P even when the inner surface IF of the shell component 4 and the fixing portion 8P are separated due to impact or the like.

[0142] Next, refer to Fig.18 , the positional relationship among the housing member 4 , the metal member 5 , and the shape memory alloy wire SA will be described. Fig.18 4 is a front view of the housing component 4, the metal component 5 and the shape memory alloy wire SA. Fig.18 In order to understand the positional relationship between the metal parts 5 (the first movable side terminal plate 5M1, the first fixed side terminal plate 5F1, and the second fixed side terminal plate 5F2) and the shape memory alloy wire SA (the first wire SA1 and the second wire SA2) disposed inside the housing part 4, only the outer shape of the housing part 4 is indicated by a dotted line. Fig.18 In the figure, for the sake of clarity, the components other than the first movable terminal plate 5M1, the first fixed terminal plate 5F1, the second fixed terminal plate 5F2, the first wire SA1 and the second wire SA2 are omitted. Fig.18 The position of the movable-side metal member 5M (first movable-side terminal plate 5M1 ) when the lens holding member 2 is in the initial state is shown, and for convenience, the first line SA1 and the second line SA2 are shown in a state where they are not loosened.

[0143] like Fig.18As shown in FIG. 1 , a first point P1 at one end (end on the fixed side) of a second line SA2 located outside the first line SA1 and a second point P2 at the other end (end on the movable side) of the second line SA2 are at different heights in the vertical direction (Z-axis direction). Furthermore, the lower peripheral wall portion 4A of the housing member 4 extends to a position higher than a midpoint P3 between the first point P1 and the second point P2.

[0144] Specifically, the first point P1 is a point at a height H1 where one end (end on the fixed side) of the second line SA2 is fixed to the second fixed side terminal plate 5F2. The height H1 is a height in the up-down direction (Z-axis direction) based on the bottom surface of the bottom plate portion 4B of the housing member 4. The same applies to the heights H2 to H6 described later.

[0145] The second point P2 is a point at a height H4 where the other end (end on the movable side) of the second line SA2 is fixed to the first movable-side terminal plate 5M1.

[0146] The midpoint P3 between the first point P1 and the second point P2 is a point at a height of H2. In the example shown in the figure, the midpoint P3 is located at a position where the first line SA1 in the unrelaxed state and the second line SA2 in the unrelaxed state intersect when viewed from the X1 side. However, the midpoint P3 between the first point P1 and the second point P2 in the up-down direction (Z-axis direction) may not be at the same height as the position where the first line SA1 in the unrelaxed state and the second line SA2 in the unrelaxed state intersect.

[0147] Each of the four lower side plate portions (the first lower side plate portion 4A1 to the fourth lower side plate portion 4A4 ) constituting the lower outer peripheral wall portion 4A of the case member 4 is configured to have a height H3 higher than the height H2 of the midpoint P3 .

[0148] Fig.18 The first lower side plate portion 4A1 is shown to have a height H3 higher than the height H2 of the midpoint P3. This configuration can prevent the portion of the second line SA2 that is lower than the midpoint P3 from being sandwiched between the upper peripheral wall portion 3A of the cover portion 3 and the base portion 8 when the cover portion 3 is mounted on the shell portion 4. This is because the lower peripheral wall portion 4A of the shell portion 4 is arranged between the upper peripheral wall portion 3A and the base portion 8.

[0149] In addition, if Fig.18As shown, the four lower angle plate portions 4C (the first lower angle plate portion 4C1 to the fourth lower angle plate portion 4C4) constituting the lower peripheral wall portion 4A of the shell member 4 are respectively configured to have a height H5 higher than the height H4 of the second point P2. Moreover, the four lower angle plate portions 4C (the first lower angle plate portion 4C1 to the fourth lower angle plate portion 4C4) respectively have a positioning protrusion TP for positioning the cover member 3 relative to the shell member 4 in the up-down direction (Z-axis direction). The positioning protrusion TP is formed to have a height H6 higher than the height H5 of the lower angle plate portion 4C.

[0150] Fig.18 It is shown that the second lower corner plate portion 4C2 has a height H5 higher than the height H4 of the second point P2 and the positioning protrusion TP of the second lower corner plate portion 4C2 has a height H6 higher than the height H5.

[0151] Next, refer to Fig.19 , the insulating member IM provided in the leaf spring 6 will be described. Fig.19 6 is a bottom view of the leaf spring. Specifically, Fig.19 The upper left figure is a bottom view of the leaf spring 6 disposed in the cover member 3 together with the plate-like member 1. Fig.19 The left center figure is a bottom view of the leaf spring 6 disposed in the plate-like member 1. Fig.19 The lower left figure is a bottom view of the leaf spring 6 configured separately. In addition, Fig.19 The right picture is Fig.19 An enlarged view of a range R5 surrounded by a dotted line in the lower left figure.

[0152] like Fig.19 As shown, the elastic arm portion 6EA21 of the second outer leaf spring 6A2 and the elastic arm portion 6EB4 of the fourth inner leaf spring 6B4 have portions adjacent to each other along the fourth upper side plate portion 3A4 of the cover member 3. In these adjacent portions, adhesive AD3 serving as an insulating member IM is provided at four locations in the elastic arm portion 6EA21. The four adhesives AD3 are provided at intervals of more than a specified value IT. In the example shown in the figure, the four adhesives AD3 maintain a state of being able to stretch and retract to a degree that does not hinder the elasticity of the leaf spring 6. In addition, the adhesive AD3 constituting the insulating member IM may also be formed of a material other than an adhesive such as a synthetic resin. In addition, the adhesive AD3 may also be provided in the elastic arm portion 6EB4 instead of the elastic arm portion 6EA21, or may be provided in the elastic arm portion 6EA21 and the elastic arm portion 6EB4, respectively.

[0153] This configuration can prevent the elastic arm portion 6EA21 (second outer leaf spring 6A2) and the elastic arm portion 6EB4 (fourth inner leaf spring 6B4) from contacting each other and becoming conductive (short-circuited).

[0154] In the example shown in the figure, the adhesive AD3 as the insulating component IM is applied to four elastic arm parts 6EA11, 6EA12, 6EA21, and 6EA22, respectively. In this case, the plate-like component 1 that functions as the insulating component IM can also be omitted. This is because when the plate-like component 1 is not provided, even if the elastic arm part 6EB4 contacts the cover part 3 as the conductive component, the adhesive AD3 can prevent the elastic arm part 6EA21 from contacting the cover part 3 and conducting with the elastic arm part 6EB4 via the cover part 3. In addition, in this case, the adhesive AD3 can also be provided on the elastic arm parts 6EB1 to 6EB4, respectively. This is to more reliably prevent the conduction between the two elastic arm parts.

[0155] In addition, if Fig.19 As shown in FIG. 1 , the elastic arm portion 6E is formed to have a bent portion BP and an extended portion EP extending from the bent portion BP. Fig.19 In the example shown, the bent portion BP is a portion bent so as to reverse the direction in which the elastic arm portion 6E extends, and the extended portion EP is a portion other than the bent portion BP. Fig.19 In the example shown, the elastic arm portion 6EB4 has five bends BP, and the elastic arm portion 6EA21 has two bends BP. Fig.19 In the example shown, the adhesive AD3 is provided on the extension portion EP.

[0156] This configuration has an effect of less influence on the spring constant of the leaf spring 6 compared to the case where the insulating member IM is provided at the bent portion BP, that is, the case where the adhesive AD3 is applied to the bent portion BP.

[0157] Next, refer to Fig. 20 as well as Fig.21 , the processed material WK including the leaf spring 6 will be described. Fig. 20 It is a three-dimensional image of the material WK to be processed. Specifically, Fig. 20 The above figure is a three-dimensional diagram of the entire processed material WK. Fig. 20 The central figure is Fig. 20 An enlarged view of the range R6 enclosed by the dotted line in the above figure. Fig. 20 The following picture is Fig. 20 An enlarged view of the range R7 surrounded by the dotted line in the central figure. Fig.21 This is a perspective view of a leaf spring 6 made of a workpiece WK. Specifically, Fig.21 The upper figure is a perspective view of the entire leaf spring 6 made of the processed material WK. Fig.21 The central figure is Fig.21 An enlarged view of the range R8 enclosed by the dotted line in the above figure. Fig.21 The following picture is Fig.21An enlarged view of the range R9 surrounded by the dotted line in the central figure.

[0158] The workpiece WK is a component used for manufacturing the leaf spring 6, also called a "workpiece", and includes a removal portion RM, a non-removable portion AM (leaf spring 6), and a connecting portion CN. The removal portion RM is a portion removed from the workpiece WK in order to manufacture the leaf spring 6 from the workpiece WK, and includes a main body portion MP, an elastic deformation portion ET, a front side removal portion FP, and a rear side removal portion RP. The non-removable portion AM is a portion remaining after the removal portion RM is removed from the workpiece WK, and in the example shown in the figure, it corresponds to the leaf spring 6.

[0159] The front side removal portion FP and the rear side removal portion RP are cut off from the non-removable portion AM by a cutting device (not shown). In the example shown in the figure, the front side removal portion FP and the rear side removal portion RP are cut off from the non-removable portion AM by irradiating a laser generated by a laser cutting device (not shown) along the cutting line LC after the workpiece WK is mounted on the lens holding component 2 and the base component 8.

[0160] The main body portion MP and the elastic deformation portion ET are configured to collectively hold the movable support portions 6M of the four inner leaf springs 6B at a stage before the removal portion RM is removed from the workpiece WK.

[0161] In the example shown in the figure, the main body MP and the elastic deformation part ET are configured to be arranged inside the four inner leaf springs 6B, that is, arranged in the opening 2K of the lens holding member 2 when the workpiece WK is mounted on the lens holding member 2. In addition, the main body MP is arranged inside the four elastic deformation parts ET. That is, the main body MP is connected to the four elastic deformation parts ET at its outer peripheral part.

[0162] Specifically, the main body MP is an annular portion having a circular hole MH in the center. The elastic deformation portion ET is a portion that is elastically deformed when the main body MP moves along the optical axis. The elastic deformation portion ET includes a first elastic deformation portion ET1 corresponding to the movable support portion 6MB1 of the first inner leaf spring 6B1, a second elastic deformation portion ET2 corresponding to the movable support portion 6MB2 of the second inner leaf spring 6B2, a third elastic deformation portion ET3 corresponding to the movable support portion 6MB3 of the third inner leaf spring 6B3, and a fourth elastic deformation portion ET4 corresponding to the movable support portion 6MB4 of the fourth inner leaf spring 6B4.

[0163] The connecting portion CN is a portion connecting the removal portion RM and the non-removable portion AM. In the example shown in the figure, the connecting portion CN is configured to connect the elastic deformation portion ET, which is a part of the removal portion RM, and the movable support portion 6M of the inner leaf spring 6B, which is a part of the non-removable portion AM. Moreover, the connecting portion CN is configured so that a part of it is removed together with the removal portion RM.

[0164] In the illustrated example, the connecting portion CN includes a first connecting portion CN1 connecting the movable supporting portion 6MB1 of the first inner leaf spring 6B1 and the first elastic deformation portion ET1, a second connecting portion CN2 connecting the movable supporting portion 6MB2 of the second inner leaf spring 6B2 and the second elastic deformation portion ET2, a third connecting portion CN3 connecting the movable supporting portion 6MB3 of the third inner leaf spring 6B3 and the third elastic deformation portion ET3, and a fourth connecting portion CN4 connecting the movable supporting portion 6MB4 of the fourth inner leaf spring 6B4 and the fourth elastic deformation portion ET4.

[0165] The movable support portion 6M (movable support portion 6MB1 to movable support portion 6MB4) of the inner leaf spring 6B has an inner fixing portion FI and an outer fixing portion FE, which are fixed to the lens holding member 2. In the example shown in the figure, the inner fixing portion FI and the outer fixing portion FE are portions covered by the front end portion of the protrusion 2T that is crushed by the heat riveting when the protrusion 2T formed on the upper surface of the lens holding member 2 is subjected to heat riveting. Fig. 20 as well as Fig.21 In the figure, for the sake of clarity, dot graphics are added to the inner fixing part FI and the outer fixing part FE.

[0166] In the example shown in the figure, the inner fixing portion FI is arranged adjacent to the connecting portion CN, and the outer fixing portion FE is arranged outside the inner fixing portion FI (on the side away from the optical axis OA). In addition, the elastic arm portion 6E of the inner leaf spring 6B is configured to extend from between the inner fixing portion FI and the outer fixing portion FE. Moreover, the width of the connecting portion CN along the width direction orthogonal to the direction in which the connecting portion CN extends (extension direction) is smaller than the width of the inner fixing portion FI along the same width direction.

[0167] In addition, the elastic deformation part ET is as follows Fig. 20 As shown in the central figure of FIG. , it has an extension portion EL extending in a direction intersecting with the extension direction of the connection portion CN. In this case, a part of the extension portion EL is located on the extension line of the inner side of the connection portion CN.

[0168] The elastic deformation portion ET is formed in a substantially U-shape, with one end connected to the connection portion CN and the other end connected to the main body MP. In this case, the width of the portion connected to the main body MP is larger than the width of the portion connected to the connection portion CN.

[0169] exist Fig. 20In the example shown in the center figure, the movable support portion 6MB3 of the third inner leaf spring 6B3 has a third inner fixing portion FI3 and a third outer fixing portion FE3, and the movable support portion 6MB4 of the fourth inner leaf spring 6B4 has a fourth inner fixing portion FI4 and a fourth outer fixing portion FE4. Moreover, the third inner fixing portion FI3 is configured to be adjacent to the third connecting portion CN3, and the fourth inner fixing portion FI4 is configured to be adjacent to the fourth connecting portion CN4. In addition, the elastic arm portion 6EB3 of the third inner leaf spring 6B3 is configured to extend from between the third inner fixing portion FI3 and the third outer fixing portion FE3, and the elastic arm portion 6EB4 of the fourth inner leaf spring 6B4 is configured to extend from between the fourth inner fixing portion FI4 and the fourth outer fixing portion FE4.

[0170] Moreover, if Fig. 20 As shown in the following figure, the width WD1 of the third connection part CN3 along the width direction orthogonal to the direction in which the third connection part CN3 extends (the axial direction of the central axis AX3) is smaller than the width WD2 of the third inner fixing part FI3 along the same width direction. The widths of the first connection part CN1, the second connection part CN2, and the fourth connection part CN4 are also the same.

[0171] In addition, if Fig. 20 As shown in the central figure of the third elastic deformation part ET3, the third extension part EL3 extends in a direction intersecting the extension direction of the third connection part CN3 (the axial direction of the central axis AX3), and the fourth elastic deformation part ET4 has a fourth extension part EL4 extending in a direction intersecting the extension direction of the fourth connection part CN4 (the axial direction of the central axis AX4). The same is true for the first elastic deformation part ET1 and the second elastic deformation part ET2.

[0172] In addition, if Fig. 20 As shown in the above figure, the third elastic deformation portion ET3 is formed in a substantially U-shape, with one end (outer end) connected to the third connecting portion CN3, and the other end (inner end) connected to the main body MP. In this case, the width WD3 of the portion connected to the main body MP is greater than the width WD4 of the portion connected to the third connecting portion CN3 (refer to Fig. 20 The same also applies to each of the first elastic deformation portion ET1, the second elastic deformation portion ET2, and the fourth elastic deformation portion ET4.

[0173] The manufacturing method of the lens driving device 100 as an example of an optical component driving device has the following steps: fixing the movable support part 6M (movable support part 6MB1 to movable support part 6MB4) of the inner leaf spring 6B to the lens holding part 2 in such a manner that the removal part RM (main body MP and elastic deformation part ET) which is a part of the processed material WK is located in the opening 2K of the optical component holding part (lens holding part 2); and twisting the connecting part CN provided on the inner side of the movable support part 6M by moving the main body MP in a direction intersecting with the plate surface of the main body MP, thereby cutting off the connecting part CN.

[0174] Specifically, the main body MP has a hole MH for engaging a clamp (not shown). Furthermore, the process of cutting the connection part CN may include: a process of hooking the clamp to the hole MH and pulling the main body MP upward, a process of hooking the clamp to the hole MH and pressing the main body MP downward, a process of inserting the clamp from the bottom of the main body MP to the hole MH and pushing the main body MP upward, or a process of inserting the clamp from the top of the main body MP to the hole MH and pressing the main body MP downward.

[0175] The cut-off portion TF as a part of the cut-off connecting portion CN is as follows: Fig.21 As shown in FIG. 1 , the cut-away portion TF remains inside the movable support portion 6M of the inner leaf spring 6B. Specifically, the cut-away portion TF is as shown in FIG. Fig.21 As shown in the above figure, it includes a part of the first connection part CN1 corresponding to the first inner fixing part FI1, namely the first cut-off part TF1, a part of the second connection part CN2 corresponding to the second inner fixing part FI2, namely the second cut-off part TF2, a part of the third connection part CN3 corresponding to the third inner fixing part FI3, namely the third cut-off part TF3, and a part of the fourth connection part CN4 corresponding to the fourth inner fixing part FI4, namely the fourth cut-off part TF4.

[0176] In the example shown in the figure, the leaf spring 6 has a combination of two inner fixing portions FI adjacent to each other (a combination of a first inner fixing portion FI1 and a second inner fixing portion FI2, or a combination of a third inner fixing portion FI3 and a fourth inner fixing portion FI4). Fig.21 As shown in the center figure of FIG. 1 , the respective front ends are formed to be inclined in opposite directions relative to the plate surface PF of the movable support portion 6M of the inner leaf spring 6B.

[0177] Specifically, when the main body MP moves upward while the workpiece WK (plate spring 6) is fixed to the lens holding member 2 and the base member 8, the third connecting portion CN3 moves upward. Fig.21The fourth connection part CN4 is twisted in the direction indicated by the arrow AR3 and cut off, and the third cut-off part TF3 as a part thereof remains inside the movable support part 6MB3. Fig.21 The movable support portion 6MB4 is twisted and cut in the direction indicated by the arrow AR4, and a fourth cut-away portion TF4 as a part thereof remains inside the movable support portion 6MB4.

[0178] That is, the front end of the third cut-off portion TF3 is as follows Fig.21 As shown, the front end of the fourth cut-off portion TF4 is formed to be inclined relative to the plate surface PF of the movable support portion 6MB3 in the direction indicated by the arrow AR3. Similarly, the front end of the fourth cut-off portion TF4 is formed to be inclined relative to the plate surface PF of the movable support portion 6MB4 in the direction indicated by the arrow AR4. Fig.21 For the sake of clarity, the inclination of the front end of the third cut-off portion TF3 is indicated by a dotted line L3, and the inclination of the front end of the fourth cut-off portion TF4 is indicated by a dotted line L4. The dotted line L3 is a line parallel to the upper edge of the front end of the third cut-off portion TF3, and the dotted line L4 is a line parallel to the upper edge of the front end of the fourth cut-off portion TF4. However, the upper edge of the front end of the third cut-off portion TF3 may not be a completely straight line. The same is true for the upper edge of the front end of the fourth cut-off portion TF4.

[0179] The direction indicated by the arrow AR3 and the direction indicated by the arrow AR4 are opposite to each other. Specifically, the direction indicated by the arrow AR3 is a clockwise direction with respect to the center axis AX3 of the third connecting portion CN3 (third cut-off portion TF3) when viewed from the center (optical axis OA) of the opening 2K. Moreover, the direction indicated by the arrow AR4 is a counterclockwise direction with respect to the center axis AX4 of the fourth connecting portion CN4 (fourth cut-off portion TF4) when viewed from the center (optical axis OA) of the opening 2K.

[0180] Next, refer to Fig. 22 , the removed portion RM located inside the inner leaf spring 6B will be described. Fig. 22 This is a perspective view of a portion of the removal portion RM constituting the workpiece WK. Specifically, Fig. 22 The upper figure is a perspective view of the removed portion RM located inside the inner leaf spring 6B. Fig. 22 The following figure is from Fig. 22 An enlarged view of the range R10 enclosed by the dotted line in the above figure.

[0181] The removal portion RM located on the inner side of the inner leaf spring 6B includes a main body portion MP and four elastic deformation portions ET (first elastic deformation portion ET1 to fourth elastic deformation portion ET4). The four elastic deformation portions ET (first elastic deformation portion ET1 to fourth elastic deformation portion ET4) respectively include an extension portion EL, an inner connecting portion QA and an outer connecting portion QC. Specifically, the first elastic deformation portion ET1 includes a first extension portion EL1, the second elastic deformation portion ET2 includes a second extension portion EL2, the third elastic deformation portion ET3 includes a third extension portion EL3, and the fourth elastic deformation portion ET4 includes a fourth extension portion EL4. Moreover, the four extension portions EL (first extension portion EL1 to fourth extension portion EL4) respectively include an inner extension portion UI, an outer extension portion UE and a bending portion BD. Fig. 22 In the figure, for the sake of clarity, dot graphics are added to the inner connecting portion QA, the outer connecting portion QC and the bending portion BD.

[0182] The inner connecting portion QA is a portion connecting the extension portion EL and the main body portion MP, and the outer connecting portion QC is a portion connecting the extension portion EL and the connecting portion CN.

[0183] The inner extension portion UI is located inside the outer extension portion UE and is formed to extend along the circumference of a circle with the optical axis OA as the center. The outer extension portion UE is located outside the inner extension portion UI and is formed to extend along the circumference of a circle with the optical axis OA as the center. The bent portion BD is formed so that the inner extension portion UI extends along the outer extension portion UE to connect the inner extension portion UI with the outer extension portion UE.

[0184] exist Fig. 22In the example shown in the above figure, the inner extension portion UI of the first elastic deformation portion ET1 (first extension portion EL1) extends from the inner connection portion QA in a counterclockwise direction along a circle centered on the optical axis OA, and the outer extension portion UE of the first elastic deformation portion ET1 (first extension portion EL1) extends from the curved portion BD in a clockwise direction along a circle centered on the optical axis OA. On the other hand, the inner extension portion UI of the second elastic deformation portion ET2 (second extension portion EL2) extends from the inner connection portion QA in a clockwise direction along a circle centered on the optical axis OA, and the outer extension portion UE of the second elastic deformation portion ET2 (second extension portion EL2) extends from the curved portion BD in a counterclockwise direction along a circle centered on the optical axis OA. Similarly, the inner extension portion UI of the third elastic deformation portion ET3 (third extension portion EL3) extends from the inner connection portion QA in a counterclockwise direction along a circle centered on the optical axis OA, and the outer extension portion UE of the third elastic deformation portion ET3 (third extension portion EL3) extends from the curved portion BD in a clockwise direction along a circle centered on the optical axis OA. On the other hand, the inner extension portion UI of the fourth elastic deformation portion ET4 (fourth extension portion EL4) extends from the inner connection portion QA in a clockwise direction along a circle centered on the optical axis OA, and the outer extension portion UE of the fourth elastic deformation portion ET4 (fourth extension portion EL4) extends from the bending portion BD in a counterclockwise direction along a circle centered on the optical axis OA.

[0185] The outer connection QC is as follows Fig. 22 As shown in the following figure, it is formed to expand to both sides of the connection part CN along the direction orthogonal to the direction in which the connection part CN extends (the radial direction of a circle centered on the optical axis OA), that is, the width direction. Specifically, the width of the outer connection part QC along the width direction is larger than the width of the connection part CN along the same width direction. In addition, the outer end OE of the outer connection part QC has a first part OE1 connected to the connection part CN and a second part OE2 located on both sides of the first part OE1 in the width direction and not connected to the connection part CN.

[0186] exist Fig. 22In the example shown in the figure below, the outer connection portion QC of the third elastic deformation portion ET3 (third extension portion EL3) is extended toward both sides of the third connection portion CN3 along the direction orthogonal to the direction in which the third connection portion CN3 extends (the axial direction of the central axis AX3), that is, the width direction. Specifically, the width WD4 of the outer connection portion QC along the width direction is larger than the width WD1 of the third connection portion CN3 along the same width direction. Moreover, the outer end portion OE of the outer connection portion QC has a first portion OE1 connected to the third connection portion CN3 and a second portion OE2 located on both sides of the first portion OE1 in the width direction and not connected to the third connection portion CN3. The same is true for the outer connection portion QC in each of the first elastic deformation portion ET1 (first extension portion EL1), the second elastic deformation portion ET2 (second extension portion EL2) and the fourth elastic deformation portion ET4 (fourth extension portion EL4).

[0187] As described above, the lens driving device 100 according to the embodiment of the present disclosure is Figure 2 As shown, it comprises: a fixed side part FB including a housing HS; a lens holding part 2, which has an opening 2K that passes through in the up-down direction and can be equipped with a lens body LS, and is arranged inside the housing HS; a plurality of independent leaf springs 6, which are configured to connect the upper part of the lens holding part 2 to the fixed side part FB in a state where the lens holding part 2 can be moved relative to the fixed side part FB; and a driving part DM that moves the lens holding part 2 relative to the fixed side part FB. The housing HS includes a metal cover part 3 having an outer peripheral wall part (upper outer peripheral wall part 3A) and a top plate part 3B. The plurality of leaf springs 6 are respectively as shown in FIG. Figure 3 as well as Figure 4 As shown, there is a fixed support portion 6F fixed to the fixed side part FB, a movable support portion 6M fixed to the upper part of the lens holding part 2, and an elastic arm portion 6E that is elastically deformable and is configured to connect the fixed support portion 6F and the movable support portion 6M. The elastic arm portion 6E of each of the plurality of leaf springs 6 is configured to be opposite to the top plate portion 3B of the cover part 3. An insulating member IM is provided between the elastic arm portion 6E of each of the plurality of leaf springs 6 and the top plate portion 3B. This configuration brings about an effect of suppressing short circuits of the plurality of leaf springs 6. For example, this configuration has an effect of preventing short circuits of two circuits through the cover part 3 when one of the plurality of leaf springs 6 forms a circuit different from that of another of the plurality of leaf springs 6.

[0188] like Figure 2 As shown, a metal plate-like member 1 as an insulating member IM may be fixed to the lower surface of the top plate portion 3B of the cover member 3. In this case, an insulating coating agent may be applied to the lower surface of the plate-like member 1. This configuration brings about an effect of being able to reduce the thickness of the plate-like member 1 compared to the case where the plate-like member 1 is formed of a synthetic resin.

[0189] The outer peripheral wall portion (upper outer peripheral wall portion 3A) of the cover member 3 is as follows: Figure 2 As shown, it may also have four side plate portions (first upper side plate portion 3A1 to fourth upper side plate portion 3A4). The plate-like component 1 may also have an upper plate portion 1B opposite to the top plate portion 3B and four bent portions 1A bent downward from the outer edge of the upper plate portion 1B. In this case, each of the four bent portions 1A may also be configured to be opposite to the corresponding side plate portion (first upper side plate portion 3A1 to fourth upper side plate portion 3A4) of the cover component 3. This configuration brings about the effect of achieving positioning of the plate-like component 1 relative to the cover component 3 through the bent portions 1A.

[0190] The outer peripheral wall portion (upper outer peripheral wall portion 3A) of the cover member 3 is as follows: Figure 2 As shown in FIG. 1 , the plate-shaped member 1 may include a side plate portion (first upper side plate portion 3A1 to fourth upper side plate portion 3A4) located outside at least one elastic arm portion 6E of the plurality of leaf springs 6. Figure 2 As shown, it is also possible to have an upper plate portion 1B opposed to the top plate portion 3B of the cover member 3, and a bent portion 1A bent downward from the outer edge of the upper plate portion 1B and arranged between the elastic arm portion 6E and the side plate portion (the first upper side plate portion 3A1 to the fourth upper side plate portion 3A4). An insulating coating agent may also be applied to the inner surface of the bent portion 1A. This configuration brings about the following effect: even if the elastic arm portion 6E of the leaf spring 6 moves in a direction intersecting the up-down direction (Z-axis direction) due to an impact caused by the fall of the lens driving device 100, etc., it is possible to prevent the elastic arm portion 6E from contacting the upper peripheral wall portion 3A of the cover member 3.

[0191] The plate-like component 1 is Figure 2 As shown, the cover member 3 can also be fixed to the cover member 3 by using a conductive adhesive AD1 and an insulating adhesive AD2. This configuration brings about the following effects: the conductive adhesive AD1 can be used to make the potential of the plate-like member 1 and the potential of the cover member 3 the same potential (for example, ground potential), and the insulating adhesive AD2 can be used to increase the bonding strength between the plate-like member 1 and the cover member 3. In addition, in the example shown in the figure, the cover member 3 is electrically connected to an external substrate or the like via the shell member 4. Specifically, the cover member 3 is connected to the cover member 3 via a connection recess RS (see FIG. 1 ) formed on the first lower side plate portion 4A1 of the shell member 4 and functions as a terminal portion. Fig.14 The connection recess RS is a portion where a portion of the first lower side plate portion 4A1 is recessed inward. More specifically, the connection recess RS is as shown in FIG. Fig.14As shown in the above figure, the first conductive component CM1 to the fifth conductive component CM5, the first fixed side terminal plate 5F1 and the second fixed side terminal plate 5F2, together with their respective terminal portions exposed to the outside through the first through hole 4H1 of the first lower side plate portion 4A1, are electrically connected to an external substrate, etc. through welding or a conductive adhesive.

[0192] like Fig.19 As shown, the elastic arm portions 6E of the two leaf springs 6 may have mutually adjacent portions, and in the adjacent portions, adhesive AD3 as an insulating member IM is provided at multiple locations on at least one of the two elastic arm portions 6E. In this case, the insulating member IM may be formed of a material other than an adhesive such as a synthetic resin. This configuration has the effect of suppressing a short circuit between the two elastic arm portions even when the elastic arm portion 6E is undesirably deformed due to an impact caused by falling or the like. In addition, the cured adhesive AD3 does not have adhesiveness, and therefore does not adhere to the adjacent elastic arm portion 6E when in contact with the adjacent elastic arm portion 6E.

[0193] In the adjacent portion of the two elastic arms 6E, the adhesive AD3 may be Fig.19 The adhesive AD3 may be provided on only one of the two elastic arms 6E as shown, or may be provided on both of the two elastic arms 6E. The configuration in which the adhesive AD3 is provided on only one of the two elastic arms 6E can improve the production efficiency of the lens driving device 100 compared with the configuration in which the adhesive AD3 is provided on both of the two elastic arms 6E.

[0194] like Fig.19 As shown, adhesive AD3 for preventing the elastic arm portion 6E from contacting the top plate portion 3B may be applied at multiple locations on the elastic arm portion 6E of each of the plurality of leaf springs 6. In this case, the adhesive AD3 constitutes the insulating member IM. This configuration has the effect of suppressing the contact between the elastic arm portion 6E and the top plate portion 3B by a simple method of applying the adhesive AD3 to the elastic arm portion 6E. In addition, the cured adhesive AD3 does not have adhesiveness, so it does not adhere to the top plate portion 3B when in contact with the top plate portion 3B.

[0195] The elastic arm 6E is as follows Fig.19 As shown, it is also possible to have a bent portion BP and an extension portion EP extending from the bent portion BP. In this case, the insulating member IM may also be provided at the extension portion EP. This configuration has an effect of less influence on the spring constant of the leaf spring 6 than when the insulating member IM is provided at the bent portion BP, that is, when the adhesive AD3 is applied to the bent portion BP.

[0196] In addition, if Figure 2As shown, the lens driving device 100 of the optical component driving device as an embodiment of the present disclosure comprises: a base component 8; an optical component holding component (lens holding component 2), having an opening 2K capable of configuring an optical component (lens body LS) and penetrating in the up-down direction, and movably arranged relative to the base component 8; a cover component 3, having a top plate portion 3B and an upper peripheral wall portion 3A, the top plate portion 3B being opposed to the base component 8 in the up-down direction via the optical component holding component (lens holding component 2), the upper peripheral wall portion 3A including a plurality of upper side plate portions (a first upper side plate portion 3A1 to a fourth upper side plate portion 3A4) extending downward from the outer edge portion of the top plate portion 3B; and a plurality of shape memory alloy wires SA, arranged on the inner side of the upper peripheral wall portion 3A, one end of which is fixed to a fixed side component FB including the base component 8, and the other end of which is fixed to a movable side component MB including the optical component holding component (lens holding component 2), so as to enable the optical component holding component (lens holding component 2) to move relative to the base component 8. The fixed side part FB includes a shell part 4 that accommodates the base part 8 and is open at the top. The shell part 4 has a bottom plate part 4B arranged on the lower side of the base part 8 and a plurality of lower side plates (the first lower side plate part 4A1 to the fourth lower side plate part 4A4) extending upward from the outer edge of the bottom plate part 4B. The lower side plates (the first lower side plate part 4A1 to the fourth lower side plate part 4A4) are located between the shape memory alloy wire SA and the upper side plates (the first upper side plate part 3A1 to the fourth upper side plate part 3A4) constituting the upper peripheral wall part 3A of the cover part 3, and are opposite to the shape memory alloy wire SA. This configuration brings about the effect of suppressing the occurrence of an adverse condition caused by the contact between the shape memory alloy wire SA and the cover part 3, such as the shape memory alloy wire SA being sandwiched between the base part 8 and the cover part 3 when assembling the cover part 3. This is because the lower peripheral wall part 4A of the shell part 4 exists outside the shape memory alloy wire SA.

[0197] like Fig.18As shown, the first point P1 at which one end of the shape memory alloy wire SA is fixed to the fixed side member FB and the second point P2 at which the other end of the shape memory alloy wire SA is fixed to the movable side member MB may also be at different heights in the vertical direction. The lower side plate portion (the first lower side plate portion 4A1 to the fourth lower side plate portion 4A4) may also extend to a position higher than the midpoint P3 between the first point P1 and the second point P2. Since this structure can cover at least the lower half of the shape memory alloy wire SA with the shell member 4, it brings an effect of further suppressing the occurrence of adverse conditions caused by the contact between the shape memory alloy wire SA and the cover member 3 compared to the case where the height of the lower side plate portion is lower than the height of the midpoint P3. In addition, the lower side plate portion is not limited to a structure that is higher than the midpoint P3 in the entire area. For example, when there is a portion that is not opposite to the shape memory alloy wire SA, the height of the lower side plate portion may be partially lower than the midpoint P3. In addition, the lower side plate portion may also be configured so that a portion higher than the midpoint P3 and a portion lower than the midpoint P3 are alternately formed.

[0198] like Figure 2 As shown, the lower peripheral wall portion 4A may also have a lower corner plate portion 4C located between two adjacent lower side plate portions. Fig.18 As shown, the lower angle plate portion 4C may also extend to a position higher than the lower side plate portion. This structure can limit the position (downward movement) of the cover component 3 assembled to the shell component 4 by using the lower angle plate portion 4C, thereby further suppressing the occurrence of adverse conditions caused by the contact between the shape memory alloy wire SA and the cover component 3.

[0199] The cover member 3 and the housing member 4 may both be formed of metal plates and may be in electrical communication with each other. Compared with the case where the cover member 3 and the housing member 4 are formed of materials other than metal, this configuration can achieve a thinner cover member 3 and the housing member 4 while maintaining their strength, thereby achieving a miniaturized optical component driving device. In addition, this configuration can provide the optical component driving device with a shielding function.

[0200] like Figure 5 As shown, one end of the shape memory alloy wire SA may also be fixed to the fixed side metal member 5F provided on the base member 8. Figure 5 As shown in FIG. 1 , the other end of the shape memory alloy wire SA may also be fixed to a movable side metal member 5M provided on the optical component holding member (lens holding member 2). Fig.13 As shown in the figure above, the fixed side metal component 5F and the movable side metal component 5M may be respectively opposed to different portions of the lower peripheral wall portion 4A in a direction perpendicular to the up-down direction. The base member 8 may also be formed of a synthetic resin, and as shown in FIG. Fig.13As shown in the following figure, the fixing portion 8P is bonded and fixed to the inner surface IF of the lower peripheral wall portion 4A. The fixing portion 8P may also be as shown in the following figure. Fig.14 as well as Fig.15 As shown, the shape memory alloy wire SA is configured to be adjacent to the fixed side metal component 5F between the fixed side metal component 5F and the movable side metal component 5M, and has an adhesive reservoir AC formed by a groove portion 8G or an inclined portion 8C formed in a manner away from the inner surface IF of the lower outer peripheral wall portion 4A. In this case, the shape memory alloy wire SA can also be configured to extend through the top of the fixed portion 8P. That is, the fixed portion 8P having the adhesive reservoir AC can also be configured to be located below the shape memory alloy wire SA. Moreover, an adhesive AD4 can also be provided between the adhesive reservoir AC and the inner surface IF of the lower outer peripheral wall portion 4A. This configuration is as shown Fig.16 as well as Fig.17 As shown, even when the adhesive AD4 is peeled off from the base member 8 (fixing portion 8P) due to the impact caused by falling or the like and is attached only to the lower peripheral wall portion 4A of the case member 4, and when a gap is generated between the base member 8 and the case member 4, the shape memory alloy wire SA in a relaxed state can be prevented from entering the gap. That is, this configuration has the effect of preventing the shape memory alloy wire SA in a relaxed state from being sandwiched between the base member 8 and the case member 4 in the case of the above-mentioned undesirable state. In addition, the inclined portion 8C constituting the adhesive reservoir AC does not need to be formed in a flat surface, but may be formed in a curved surface.

[0201] like Fig.14 as well as Fig.15 As shown in FIG. 1 , the adhesive reservoir AC may also extend in the vertical direction. Fig.16 as well as Fig.17 As shown, the depth DH of the adhesive reservoir AC in the direction perpendicular to the inner surface IF of the lower peripheral wall portion 4A (the first lower side plate portion 4A1 to the fourth lower side plate portion 4A4) to which the fixing portion 8P is bonded and fixed is configured to be larger than the diameter of the shape memory alloy wire SA. This configuration brings about the following effect: even in the case of the above-mentioned undesirable state, the adhesive AD attached to the lower peripheral wall portion 4A (particularly the portion solidified in the adhesive reservoir AC) can be used to suppress the shape memory alloy wire SA in a relaxed state from entering the gap between the base member 8 and the shell member 4. Therefore, this configuration brings about the effect of further suppressing the shape memory alloy wire SA in a relaxed state from being sandwiched between the base member 8 and the shell member 4.

[0202] In the above-mentioned configuration, when the optical component holding member (lens holding member 2) is in a neutral state, Fig.13As shown in the above figure, the outer side surface EF1 of the fixed-side metal component 5F is arranged at a position closer to the inner surface IF of the lower peripheral wall portion 4A than the outer side surface EF2 of the movable-side metal component 5M. That is, even if the fixed-side metal component 5F is arranged at a position closer to the lower peripheral wall portion 4A than the movable-side metal component 5M, the above-mentioned structure can also bring about the effect of preventing the shape memory alloy wire SA in a relaxed state from being clamped by the base component 8 and the case component 4.

[0203] As an example of an optical component driving device according to an embodiment of the present disclosure, a lens driving device 100 is shown in FIG. Figure 2 As shown, it comprises: a fixed side component FB; an optical component holding component (lens holding component 2) having an opening 2K which can be configured with an optical component (lens body LS) and which passes through in the up-down direction; a leaf spring 6 having a fixed support portion 6F, a movable support portion 6M fixed to the optical component holding component (lens holding component 2), and an elastic arm portion 6E which is arranged to connect the fixed support portion 6F with the movable support portion 6M and is capable of elastic deformation, wherein the fixed support portion 6F is arranged to connect the optical component holding component (lens holding component 2) with the fixed side component FB in a state where the optical component holding component (lens holding component 2) can be moved relative to the fixed side component FB, and is fixed to the fixed side component FB; and a driving portion DM which moves the optical component holding component (lens holding component 2) relative to the fixed side component FB. As shown Fig.21 As shown, a cut-off portion TF as a part of the connection portion CN connected to the removal portion RM may be provided on the opening 2K side of the movable support portion 6M. In this case, the front end of the cut-off portion TF may be formed in a shape inclined relative to the plate surface PF of the movable support portion 6M. That is, the front end of the cut-off portion TF may be formed to be twisted relative to the plate surface PF. The reason why the front end of the cut-off portion TF is inclined relative to the plate surface PF is that the connection portion CN is twisted when the removal portion RM is cut off from the leaf spring 6. This structure brings about the effect of improving the production efficiency of the optical component driving device compared to the case where the connection portion is cut by bending multiple times.

[0204] like Fig.21 As shown in FIG. 1 , the movable support portion 6M may also have an inner fixing portion FI provided adjacent to the outer side of the cut-away portion TF. The inner fixing portion FI is a portion fixed to the optical component holding member (lens holding member 2). In this case, Fig. 20 As shown in the figure below, the width WD1 of the cut-off portion TF (connection portion CN) is smaller than the width WD2 of the inner fixing portion FI. Compared with the configuration in which the cut-off portion TF is provided at a position away from the inner fixing portion FI, this configuration brings about the effect of being able to more reliably cut off the removal portion RM.

[0205] The inner fixing portion FI may be a protrusion 2T (see Figure 3 ) is inserted into a hole formed in the movable support part 6M and riveted to form a portion fixed (pressed) by a riveted fixing portion. This configuration brings about an effect of being able to fix the inner leaf spring 6B (movable support part 6M) to the lens holding member 2 more simply and more reliably than fixing by an adhesive. However, as a means for fixing the optical component holding member (lens holding member 2) and the movable support part 6M, fixing by an adhesive may also be adopted.

[0206] like Fig.21 As shown in the central figure, the movable support portion 6M may also have an outer fixing portion FE fixed to the optical component holding component (lens holding component 2). In this case, the inner fixing portion FI may also correspond to the cut-off portion TF (connecting portion CN). Moreover, the elastic arm portion 6E may also extend from between the inner fixing portion FI and the outer fixing portion FE. This structure brings about the effect of suppressing the force acting on the movable support portion 6M from having an adverse effect on the elastic arm portion 6E when the connecting portion CN is cut off. In addition, in the case where the elastic arm portion 6E extends from a portion of the movable support portion 6M located near the inner fixing portion FI, the outer fixing portion FE may also be omitted.

[0207] Two of the plurality of cut-away portions TF in the leaf spring 6 may also be Fig.21 As shown in the above figure, the first cut-away portion TF1 and the fourth cut-away portion TF4 of the leaf spring 6 are arranged at positions opposite to each other across the opening 2K. Similarly, the second cut-away portion TF2 and the third cut-away portion TF3 of the leaf spring 6 are arranged at positions opposite to each other across the opening 2K. This configuration makes it easier to cut the removal portion RM from the non-removable portion AM (leaf spring 6).

[0208] like Fig.21 As shown in the above figure, the leaf spring 6 may also have two inner fixing portions FI adjacent to each other. In this case, the two cut-off portions TF corresponding to the two inner fixing portions FI adjacent to each other are formed so that their respective front ends are inclined in opposite directions relative to the plate surface PF of the movable support portion 6M. Fig.21In the example shown, the leaf spring 6 has a third inner fixing portion FI3 and a fourth inner fixing portion FI4 adjacent to each other. In this case, the front end of the third cut-off portion TF3 corresponding to the third inner fixing portion FI3 is formed to be inclined in the direction indicated by the arrow AR3 relative to the plate surface PF of the movable support portion 6MB3. The front end of the fourth cut-off portion TF4 corresponding to the fourth inner fixing portion FI4 is formed to be inclined in the direction indicated by the arrow AR4 relative to the plate surface PF of the movable support portion 6MB4. The direction indicated by the arrow AR3 and the direction indicated by the arrow AR4 are opposite to each other. Specifically, the direction indicated by the arrow AR3 is a clockwise direction with respect to the center axis AX3 of the third connecting portion CN3 (third cut-off portion TF3) when viewed from the center of the opening 2K. The direction indicated by the arrow AR4 is a counterclockwise direction with respect to the center axis AX4 of the fourth connecting portion CN4 (fourth cut-off portion TF4) when viewed from the center of the opening 2K. In other words, the leaf spring 6 may also have a first leaf spring and a second leaf spring. In this case, the movable support portion 6M of the first leaf spring and the movable support portion 6M of the second leaf spring may be arranged adjacent to each other when viewed from above in the vertical direction. Furthermore, the cutout portion TF corresponding to the movable support portion 6M of the first leaf spring and the cutout portion TF corresponding to the movable support portion 6M of the second leaf spring may be twisted in opposite directions relative to the plate surface PF of the movable support portion 6M. Fig. 20 In the example shown, the leaf spring 6 has a third inner leaf spring 6B3 as a first leaf spring and a fourth inner leaf spring 6B4 as a second leaf spring. Furthermore, the movable support portion 6MB3 of the third inner leaf spring 6B3 and the movable support portion 6MB4 of the fourth inner leaf spring 6B4 are arranged to be adjacent to each other when viewed from above in the vertical direction. In this case, Fig.21 As shown in the figure, the third cut-off portion TF3 corresponding to the movable support portion 6MB3 of the third inner leaf spring 6B3 and the fourth cut-off portion TF4 corresponding to the movable support portion 6MB4 of the fourth inner leaf spring 6B4 are formed to be twisted in opposite directions relative to the plate surface PF of the movable support portion 6M. This structure brings about an effect that it is easy to cut off the removal portion RM even if the two inner fixing portions FI are adjacent. In addition, in the example shown in the figure, the third inner leaf spring 6B3 and the fourth inner leaf spring 6B4 are separated from each other, but they can also be connected. That is, the third inner leaf spring 6B3 and the fourth inner leaf spring 6B4 can also form a conductive path.

[0209] The manufacturing method of the optical component driving device of the embodiment of the present disclosure has the following steps: fixing the movable support part 6M to the optical component holding part (lens holding part 2) in such a manner that the removal part RM of a part of the processed material WK is located in the opening 2K; and moving the main body MP relative to the movable support part 6M in a direction intersecting the plate surface of the main body MP (approximately perpendicular direction), thereby twisting the connecting part CN provided on the inner side of the movable support part 6M, thereby cutting off the connecting part CN. In addition, the inner side of the movable support part 6M is connected to the removal part RM via the connecting part CN. The removal part RM has the main body MP and an elastically deformable elastic deformation part ET provided between the main body MP and the connecting part CN. In this manufacturing method, the connecting part CN can be cut only by moving the main body MP of the removal part RM relative to the non-removable part AM (leaf spring 6). Therefore, this manufacturing method brings about the effect of improving the production efficiency of the optical component driving device.

[0210] like Fig. 20 As shown in FIG. 1 , the movable support portion 6M may also have an inner fixing portion FI disposed adjacent to the connecting portion CN. The inner fixing portion FI is a portion fixed to the optical component holding member (lens holding member 2). In this case, Fig. 20 As shown in the following figure, the width WD1 of the connection part CN along the width direction orthogonal to the direction in which the connection part CN extends is smaller than the width WD2 of the inner fixing part FI along the width direction. Compared with the configuration in which the connection part CN is provided at a position away from the inner fixing part FI, this configuration brings about the effect of being able to more reliably cut the removal part RM from the non-removable part AM (leaf spring 6).

[0211] The elastic deformation portion ET may also include an extension portion EL extending in a direction intersecting the extension direction of the connection portion CN. In this case, a portion of the extension portion EL may also be located on an extension line of the inner side of the connection portion CN. Fig. 20 In the example shown, the third elastic deformation portion ET3 has a third extension portion EL3 extending in a direction intersecting the extension direction of the third connection portion CN3 (the axial direction of the central axis AX3). In this case, a portion of the third extension portion EL3 is located on the inner extension line of the third connection portion CN3 (the axial direction of the central axis AX3). This configuration brings about the effect of concentrating the stress generated when the elastic deformation portion ET is elastically deformed on the connection portion CN.

[0212] like Fig. 20 As shown in the above figure, the elastic deformation part ET can also be formed into a U shape, with one end connected to the connecting part CN and the other end connected to the main body MP. In this case, the width WD3 of the part connected to the main body MP is greater than the width WD4 of the part connected to the connecting part CN (refer to Fig. 20 In other words, Fig. 22As shown in FIG. 1 , the extension portion EL of the elastic deformation portion ET may also include a bent portion BD, an outer extension portion UE connected to one end of the bent portion BD, and an inner extension portion UI connected to the other end of the bent portion BD and extending along the outer extension portion UE. In this case, the inner extension portion UI may also be connected to the main body MP via a portion (inner connection portion QA) having a width greater than that of the connection portion CN. This configuration brings about the effect of concentrating the stress generated when the elastic deformation portion ET is elastically deformed on the connection portion CN.

[0213] like Fig. 22 As shown in the following figure, the elastic deformation portion ET may also have an outer connecting portion QC between the extension portion EL and the connecting portion CN, which connects the extension portion EL and the connecting portion CN. In this case, the width WD4 of the outer connecting portion QC in the width direction along the direction orthogonal to the direction in which the connecting portion CN extends (the axial direction of the central axis AX3) is larger than the width WD1 of the connecting portion CN along the same width direction. Moreover, the outer end OE of the outer connecting portion QC has a first portion OE1 connected to the connecting portion CN and a second portion OE2 located on both sides of the first portion OE1 in the width direction and not connected to the connecting portion CN. This structure brings about the effect of being able to more reliably cut off the removal portion RM from the non-removable portion AM (leaf spring 6) in the connecting portion CN because the connecting portion CN is twisted more reliably.

[0214] like Fig. 20As shown in the above figure, the processed material WK may also include two connecting parts CN that are opposite to each other across the main body MP. In this case, the two connecting parts CN are respectively connected to the inner side of the corresponding movable support part 6M. In the example shown in the figure, the processed material WK includes a first connecting part CN1 and a fourth connecting part CN4 that are opposite to each other across the main body MP, and a second connecting part CN2 and a third connecting part CN3 that are opposite to each other across the main body MP. In this case, the first connecting part CN1 is connected to the inner side of the corresponding movable support part 6MB1. The second connecting part CN2 is connected to the inner side of the corresponding movable support part 6MB2. The third connecting part CN3 is connected to the inner side of the corresponding movable support part 6MB3. The fourth connecting part CN4 is connected to the inner side of the corresponding movable support part 6MB4. This structure brings about the effect of easily twisting the connecting part CN, and then easily cutting the connecting part CN. This is because, in this configuration, when the main body MP moves in the up-down direction, a pair of connecting parts CN (the first connecting part CN1 and the fourth connecting part CN4) opposing each other across the main body MP twist in opposite directions, and another pair of connecting parts CN (the second connecting part CN2 and the third connecting part CN3) opposing each other across the main body MP twist in opposite directions. Also, a pair of adjacent connecting parts CN (the first connecting part CN1 and the second connecting part CN2) twist in opposite directions, and another pair of adjacent connecting parts CN (the third connecting part CN3 and the fourth connecting part CN4) twist in opposite directions.

[0215] A hole MH may be formed in the main body MP. In this case, the process of cutting the connection part CN may include a process of engaging a clamp (not shown) in the hole MH and moving the main body MP. Specifically, the process of cutting the connection part CN may include a process of hooking the clamp in the hole MH and pulling up the main body MP, or a process of inserting the clamp from the bottom of the main body MP to the hole MH and pushing up the main body MP. This structure brings about the effect of being able to easily move the main body MP by utilizing the hole MH formed in the main body MP. Therefore, this structure brings about the effect of easily twisting the connection part CN, and further, easily cutting off the removal part RM from the non-removable part AM (leaf spring 6).

[0216] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the above embodiments, nor to the embodiments described below. Various modifications and substitutions can be applied to the above or the embodiments described below as long as they do not depart from the scope of the present invention. In addition, the various features described with reference to the above or the embodiments described below can also be appropriately combined as long as there is no technical contradiction.

[0217] For example, in the above-mentioned embodiment, the outer leaf spring 6A is used as a conductive path to the shape memory alloy wire SA, and the inner leaf spring 6B is used as a conductive path to the electrical device, but the inner leaf spring 6B may be used as a conductive path to the shape memory alloy wire SA, and the outer leaf spring 6A may be used as a conductive path to the electrical device.

[0218] In the above-mentioned embodiment, the fixed-side metal component 5F is fixed to the base component 8 by an adhesive, but it may be embedded in the base component 8 or may be a conductive pattern formed on the surface of the base component 8. Similarly, the movable-side metal component 5M is fixed to the lens holding component 2 by an adhesive, but it may be embedded in the lens holding component 2 or may be a conductive pattern formed on the surface of the lens holding component 2.

[0219] This application claims the benefit of priority based on Japanese Patent Application No. 2022-094559, filed on Jun. 10, 2022, the entire contents of which are incorporated herein by reference.

[0220] Description of Reference Numerals

[0221] 1···Plate-shaped component 1A···Bending portion 1A1···First bending portion 1A2···Second bending portion 1A3···Third bending portion 1A4···Fourth bending portion 1B···Upper plate portion 2···Lens holding component 2D···Movable side seat portion 2D1···First movable side seat portion 2D2···Second movable side seat portion 2K···Opening 2P···Cylinder-shaped portion 2S···Protrusion portion 2S1···First protrusion portion 2S2···Second protrusion portion 2T···Protrusion 2U···Protrusion 2V···Receiving surface 3···Cover component 3A···Upper peripheral wall portion 3A1···First upper side plate portion 3A2···Second upper side plate portion 3A3··· third upper side plate portion 3A4···fourth upper side plate portion 3B···top plate portion 3C···upper side angle plate portion 3C1···first upper side angle plate portion 3C2···second upper side angle plate portion 3C3···third upper side angle plate portion 3C4···fourth upper side angle plate portion 3K···opening 4···shell part 4A···lower side peripheral wall portion 4A1···first lower side plate portion 4A2···second lower side plate portion 4A3···third lower side plate portion 4A4···fourth lower side plate portion 4B···bottom plate portion 4C···lower side angle plate portion 4C1···first lower side angle plate portion 4C2···second lower side angle plate portion 4C3···third lower side angle plate portion 4C4···fourth lower side angle plate portion 4H·· ·Through hole 4H1···First through hole 4H2···Second through hole 4K···Opening 5···Metal component 5F···Fixed side metal component 5F1···First fixed side terminal plate 5F2···Second fixed side terminal plate 5F3···Third fixed side terminal plate 5F4···Fourth fixed side terminal plate 5F5···Fifth fixed side terminal plate 5F6···Sixth fixed side terminal 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· ··Outer leaf spring 6A1···First outer leaf spring 6A2···Second outer leaf spring 6B···Inner leaf spring 6B1···First inner leaf spring 6B2···Second inner leaf spring 6B3···Third inner leaf spring 6B4···Fourth inner leaf spring 6E, 6EA1, 6EA11, 6EA12, 6EA2, 6EA21, 6EA22, 6EB1, 6EB2, 6EB3, 6EB4···Elastic arm portion 6F, 6FA1, 6FA11, 6FA12, 6FA2, 6FA21, 6FA22, 6FB1, 6FB2, 6FB3, 6FB4···Fixed support portion 6M, 6MA1, 6MA2, 6MB1, 6MB2, 6MB3,6MB4···movable support portion 8···base member 8C···inclined portion 8C2···left inclined portion 8C21···first left inclined portion 8C22···second left inclined portion 8C4···right inclined portion 8C41···first right inclined portion 8C42···second right inclined portion 8G···groove portion 8G1···front groove portion 8G11···first front groove portion 8G12···second front groove portion 8G3···rear groove portion 8G31···first rear groove 8G32···second rear groove 8D···fixed side seat 8D1···first fixed side seat 8D2···second fixed side seat 8E···side 8E1···first side 8E2···second side 8E3···third side 8E4···fourth side 8K···opening 8P···fixed portion 8P1···first fixed portion 8P1E···outer side surface 8P2···second fixed portion 8P2E···Outer side surface 8P3···Third fixing portion 8P3E···Outer side surface 8P4···Fourth fixing portion 8P4E···Outer side surface 8T···Protrusion 8U···Protrusion 8V···Receiving surface 100···Lens driving device AC···Adhesive reservoir AC1···Front side adhesive reservoir AC11···First front side adhesive reservoir AC12···Second front side adhesive reservoir AC2···Left side adhesive reservoir Adhesive reservoir AC21···first left adhesive reservoir AC22···second left adhesive reservoir AC3···rear adhesive reservoir AC31···first rear adhesive reservoir AC32···second rear adhesive reservoir AC4···right adhesive reservoir AC41···first right adhesive reservoir AC42···second right adhesive reservoir AD1···conductive adhesive AD2···insulating adhesive AD3,AD4···adhesive AM···non-removable portion BD···bending portion BP···bending portion CM···conductive component CM1···first conductive component CM2···second conductive component CM3···third conductive component CM4···fourth conductive component CM5···fifth conductive component CM6···sixth conductive component CM7···seventh conductive component CM8···eighth conductive component CM9···ninth conductive component CM10···tenth conductive component CN···connecting portion CN1···first connecting portion CN2···second connecting portion CN3···third connecting portion CN4···fourth connecting portion DM···driving Part DP···Vibration-damping part EL···Extension part EL1···First extension part EL2···Second extension part EL3···Third extension part EL4···Fourth extension part EP···Extension part ET···Elastic deformation part ET1···First elastic deformation part ET2···Second elastic deformation part ET3···Third elastic deformation part ET4···Fourth elastic deformation part FB···Fixed side part FI···Inner fixing part FI1···First inner fixing part FI2···Second inner fixing part FI3···Third inner fixing part FI4···Fourth inner fixing part FE···Outer fixing part FE1···First outer Fixing part FE2···Second outer fixing part FE3···Third outer fixing part FE4···Fourth outer fixing part FP···Front side removed part HS···Casing IF···Inner surface IM···Insulating part IS···Image capturing elements J1~J4···Holding part LC···Cutting line LS···Lens body MB···Movable side part MG···Magnet MG1···First magnet MG2···Second magnet MH···Hole MP···Main part OA···Optical axis OE···Outer end OE1···First part OE2···Second part PF···Plate surface PM, PM1, PM2, PM11··· Plate-shaped portion QA···Inner connecting portion QC···Outer connecting portion RM···Removed portion RP···Rear side removed portion RS···Connecting 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 TF···Cut portion TF1···First cut portion TF2···Second cut portion TF3···Third cut portion TF4···Fourth cut portion TP···Protrusion UE···Outer extension portion UI···Inner extension portion WK···Worked material,

Claims

1. An optical component driving device, comprising: Base components; an optical component holding member having an opening through which the optical component can be arranged and which passes in the up-down direction, and being movably arranged relative to the base member; a cover member having a top plate portion and an upper peripheral wall portion, the top plate portion being opposed to the base member in the up-down direction via the optical member holding member, the upper peripheral wall portion including a plurality of upper side plate portions extending downward from an outer edge portion of the top plate portion; and A plurality of shape memory alloy wires are arranged inside the upper peripheral wall portion, one end of which is fixed to a fixed side component including the base component, and the other end of which is fixed to a movable side component including the optical component holding component, so that the optical component holding component moves relative to the base component. The optical component driving device is characterized in that: The fixed side component includes a housing component that accommodates the base component and is open at the top. The housing member includes a bottom plate portion and a lower peripheral wall portion, wherein the bottom plate portion is disposed on the lower side of the base member, and the lower peripheral wall portion includes a plurality of lower side plate portions extending upward from an outer edge portion of the bottom plate portion. The lower side plate portion is located between the shape memory alloy wire and the upper side plate portion constituting the upper outer peripheral wall portion of the cover member, and faces the shape memory alloy wire.

2. The optical component driving device according to claim 1, wherein: A first point where the one end of the shape memory alloy wire is fixed to the fixed side member and a second point where the other end of the shape memory alloy wire is fixed to the movable side member are at different heights in the vertical direction. The lower side plate portion extends to a position higher than a midpoint between the first point and the second point.

3. The optical component driving device according to claim 1, wherein: The lower peripheral wall portion has a gusset portion located between two adjacent lower side plate portions. The angle plate portion extends to a position higher than the lower side plate portion.

4. The optical component driving device according to any one of claims 1 to 3, wherein: The cover member and the housing member are both formed of metal plates and are electrically connected to each other.

5. The optical component driving device according to any one of claims 1 to 3, wherein: The one end of the shape memory alloy wire is fixed to a fixed-side metal member provided on the base member, The other end is fixed to a movable side metal member provided on the optical component holding member, The fixed-side metal member and the movable-side metal member are respectively opposed to different portions of the lower outer peripheral wall in a direction perpendicular to the up-down direction. The base member is formed of synthetic resin and has a fixing portion bonded and fixed to the inner surface of the lower peripheral wall portion. The fixing portion is arranged adjacent to the fixing-side metal component and has an adhesive reservoir formed of a groove or an inclined portion formed away from the inner surface of the lower peripheral wall portion. The shape memory alloy wire extends through the upper part of the fixing portion, An adhesive is provided between the adhesive reservoir and the inner surface of the lower outer peripheral wall.

6. The optical component driving device according to claim 5, wherein: The adhesive reservoir extends in the up-down direction. The depth of the adhesive reservoir in a direction perpendicular to the inner surface of the lower outer peripheral wall portion to which the fixing portion is adhesively fixed is greater than the diameter of the shape memory alloy wire.

7. The optical component driving device according to claim 5, wherein: When the optical component holding member is in a neutral state, the outer side surface of the fixed-side metal member is arranged at a position closer to the inner surface of the lower outer peripheral wall portion than the outer side surface of the movable-side metal member.

8. A camera module comprising: The optical component driving device according to any one of claims 1 to 3; a lens body as the optical component held by the optical component holding member; and An imaging element is arranged to face the lens body.

Images