Lens driving device, camera device, and electronic equipment

Abstract

The present invention provides a lens driving device, a camera device and an electronic device, wherein the thickness of the lens driving device in the Z direction becomes thinner. The lens driving device has, in an XYZ coordinate system: a fixed portion having a first SMA gripping portion; a movable portion having a bracket as a lens holding portion and moving in the +Z direction; a rotating portion having a second SMA gripping portion, a first beam portion and a rotating support portion, wherein the rotating support portion is freely rotatable around the ±Y direction and is positioned by the fixed portion; and a first SMA cable, which is gripped by the first SMA gripping portion and the second SMA gripping portion and extends along the X direction including the Z direction component. The first beam portion has an abutting portion, which extends along the X direction including the Z direction component and abuts against the movable portion from the -Z direction, and when viewed from the Y direction, the first SMA cable and the first beam portion intersect.

Description

Technical Field

[0001] The present invention relates to a lens driving device, a camera device and an electronic device used in electronic devices such as a smart phone. Background Art

[0002] In a camera device equipped with an OIS (Optical Image Stabilizer) function, there are a fixed part and a movable part and a lens body supported by one of them, and an SMA (Shape Memory Alloy) cable is arranged between the fixed part and the movable part, and the movable part is moved relative to the fixed part by contraction of the SMA cable. As a document that discloses technology related to such a camera device, there is Patent Document 1. The camera device described in Patent Document 1 has: a base member; a lens unit arranged on the base member; a rod member in a shape formed by rotating the L letter 90 degrees clockwise; a support leg that stands up from the base member and supports the vertical part of the rod member; an electrode that stands up from the base member near the front end of the horizontal part of the rod member; and an SMA cable that spans between the lower end of the vertical part of the rod member and the electrode in the horizontal direction. The front end of the horizontal part of the rod member abuts against the support part protruding from the lens unit from the bottom. In this camera device, when the SMA actuator contracts, the lever member swings around the portion supported by the front end of the supporting leg as a fulcrum, and the front end of the horizontal portion of the lever member moves upward, thereby moving the lens unit upward.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2009-37059 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, in the technology of Patent Document 1, the mechanism for holding the SMA cable and its ends and the mechanism for the lever member to press the lens unit are stacked in the optical axis direction, so there is a problem that the thickness in the Z direction parallel to the optical axis direction becomes thick.

[0008] The present invention has been made in view of the above problem, and an object of the present invention is to provide a lens driving device, a camera device, and an electronic device having a thin thickness in the Z direction.

[0009] Means for solving problems

[0010] In order to solve the above-mentioned problems, a lens driving device as a preferred embodiment of the present invention is characterized in that, in an XYZ coordinate system, it comprises: a fixed part, which has a first SMA holding part; a movable part, which has a lens holding part and moves in the +Z direction; a rotating part, which has a second SMA holding part, a beam part and a rotating support part, and the rotating support part is freely rotatable around the ±Y directions and is positioned by the fixed part; and an SMA cable, which is held by the first SMA holding part and the second SMA holding part and extends along the X direction including the Z direction component, the beam part has a contact part, and the contact part extends along the X direction including the Z direction component and abuts against the movable part from the -Z direction, and when viewed from the Y direction, the SMA cable and the beam part intersect, the first SMA holding part is formed on the GND terminal, and the second SMA holding part is electrically connected to the + terminal via a spring component.

[0011] In this embodiment, the present invention may further include: a third SMA gripping portion, which is arranged on the fixed portion; a second rotating portion, which has a fourth SMA gripping portion and a second beam portion, is freely rotatable around the Y direction and is positioned by the fixed portion; a second SMA cable, which is gripped by the third SMA gripping portion and the fourth SMA gripping portion, extends along the X direction including the Z direction component, the second beam portion extends along the X direction including the Z direction component and abuts against the movable portion from the +Z direction, and when viewed from the Y direction, the second SMA cable and the second beam portion intersect, and the movable portion moves in the -Z direction.

[0012] Alternatively, the first SMA gripping portion may also serve as the third SMA gripping portion, and the SMA cable and the second SMA cable may be connected by the first SMA gripping portion.

[0013] Alternatively, the first SMA holding portion may be formed on the terminal.

[0014] Furthermore, the second SMA gripping portion may be electrically connected to the terminal via a spring member.

[0015] Alternatively, the rotating support portion may be a bearing having: a cylindrical portion extending along the Y direction; and an annular portion that rotatably holds the cylindrical portion and is fixed by the fixing portion, the cylindrical portion being provided with the second SMA holding portion at one end and the beam portion at the other end.

[0016] Alternatively, the rotation support portion may be a bearing having: a cylindrical portion extending along the Y direction; and an annular portion that rotatably holds the cylindrical portion and is fixed to the fixed portion, and the second SMA holding portion is arranged at a position away from the center of the cylindrical portion in the Z direction.

[0017] Alternatively, the rotation support part is a bearing, and the bearing has: a cylindrical part extending along the Y direction; and an annular part that freely rotates to hold the cylindrical part and is fixed on the fixed part, and the beam part is provided at the center of the cylindrical part. Alternatively, the fixed part fixes a guide cylindrical part extending along the Z direction, and the movable part fixes a guide annular part extending along the Z direction, and the guide annular part slides on the outer circumference of the guide cylindrical part and moves in the Z direction.

[0018] A camera device as another preferred embodiment of the present invention is characterized by including the above-mentioned lens driving device.

[0019] Another preferred embodiment of the present invention provides an electronic device comprising the above-mentioned camera device.

[0020] Technical Effects

[0021] The lens driving device of the present invention comprises: a fixed part, which has a first SMA gripping part; a movable part, which has a lens holding part and moves in the +Z direction; a rotating part, which has a second SMA gripping part, a beam part and a rotating support part, the rotating support part is freely rotatable around the ±Y direction and is positioned by the fixed part; and an SMA cable, which is gripped by the first SMA gripping part and the second SMA gripping part, and extends along the X direction including the Z direction component, the beam part has a contact part, the contact part extends along the X direction including the Z direction component, and abuts against the movable part from the -Z direction, and when viewed from the Y direction, the SMA cable and the beam part intersect. Thus, the structure is such that the mechanism including the first SMA gripping part and the second SMA gripping part for gripping the SMA cable and its two ends and the mechanism for pushing the lens holding part by the first beam part and its front end are not stacked in the Z direction, and the thickness in the Z direction becomes thinner accordingly. Therefore, a lens driving device, a camera device and an electronic device with a thin thickness in the Z direction can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of a smartphone 200 , which is an electronic device equipped with a camera device 100 including a lens driving device 9 according to an embodiment of the present invention.

[0023] Figure 2 yes Figure 1 A stereoscopic view of the lens driving device 9.

[0024] Figure 3 yes Figure 2 1 is a perspective view of the interior of the cover 98 of the lens driving device 9.

[0025] Figure 4 Observed from the direction of arrow A Figure 2FIG. 9 is a diagram of a lens driving device 9.

[0026] Figure 5 It is decomposition Figure 2 A stereoscopic view of the lens driving device 9.

[0027] exist Figure 6 In (A), Figure 3 (B) is a perspective view of the support plate 80 and the driving unit 8, and (A) is a perspective view of only the driving unit.

[0028] exist Figure 7 (A) is observed from other angles Figure 6 (A) is a three-dimensional view of the support plate 80 and the driving unit 8, and (B) is a three-dimensional view of the support plate 80 and the driving unit 8 from another angle. Figure 6 (B) is a perspective view of the driving unit 8.

[0029] Description of Reference Numerals

[0030] 1GND terminal; 2-1, 2-2+ terminal; 3-1 first rotating plate; 3-2 second rotating plate; 4-1 first bearing; 4-2 second bearing; 5-1 first beam; 5-2 second beam; 7-1 first blocking member; 7-2 second blocking member; 8 driving part; 8-1 first SMA cable; 8-2 second SMA cable; 9 lens driving device; 10 first SMA gripping part; 11 pressed part; 15, 25 bending part; 30-1 second SMA gripping part; 30 -2 Fourth SMA holding portion; 42 annular portion; 43 cylindrical portion; 50 pressing portion; 51 abutting portion; 70 extending portion; 75 protruding piece; 80 supporting plate; 81 supporting shaft; 82 guiding annular portion; 83 guiding cylindrical portion; 84 square hole; 85 circular hole; 86 groove; 90 base; 91, 95 through holes; 92, 96 grooves; 93, 97, 99 holes; 94 bracket; 98 cover; 100 camera device; 101 lens body; 102 image sensor; 200 smart phone. DETAILED DESCRIPTION

[0031] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 As shown, the camera device 100 is accommodated in the housing of the smartphone 200. The camera device 100 includes a lens body 101, an image sensor 102 that converts light incident through the lens body 101 into an image signal, and a lens driving device 9 that holds the lens body 101 and the image sensor 102 and drives the lens body 101 in a manner that changes the position of the lens body 101 relative to the image sensor 102.

[0032] Here, using the XYZ orthogonal coordinate system, a direction parallel to the optical axis direction of the lens body 101 is called the +Z direction, the opposite direction thereof is called the -Z direction, and the +Z direction and the -Z direction are collectively referred to as the ±Z directions or simply the Z direction. In addition, a direction orthogonal to the ±Z directions is called the +X direction, the opposite direction thereof is called the -X direction, and the +X direction and the -X direction are collectively referred to as the ±X directions or simply the X direction. In addition, a direction orthogonal to the ±Z directions and the ±X directions is called the +Y direction, the opposite direction thereof is called the -Y direction, and the +Y direction and the -Y direction are collectively referred to as the ±Y directions or simply the Y direction.

[0033] like Figure 5 As shown, the lens driving device 9 includes a cover 98, a bracket 94, a support shaft 81, a support plate 80, a driving unit 8, and a base 90. The bracket 94, the support shaft 81, the support plate 80, and the driving unit 8 are accommodated in a storage space formed by combining the cover 98 with the base 90. Figure 6 (B) and Figure 7 As shown in (B), the driving part 8 has a first SMA holding part 10, a second SMA holding part 30-1, a fourth SMA holding part 30-2, a GND terminal 1, a + terminal 2-1, a + terminal 2-2, a pressed part 11, a first rotating plate 3-1, a second rotating plate 3-2, a first bearing 4-1, a second bearing 4-2, a first beam part 5-1, a second beam part 5-2, a first spring component 6-1, a second spring component 6-2, a first SMA cable 8-1, a second SMA cable 8-2, a first blocking member 7-1 and a second blocking member 7-2.

[0034] Among these parts, the cover 98, the support plate 80, the base 90, the first SMA grip 10, the GND terminal 1, the + terminal 2-1, the + terminal 2-2, the first stopper 7-1 and the second stopper 7-2 form a fixed part, and the image sensor 102 is mounted on the base 90. The bracket 94 and the pressed part 11 form a movable part that moves along the ±Z direction, and the lens body 101 is mounted on the bracket 94. The second SMA grip 30-1, the fourth SMA grip 30-2, the first rotating plate 3-1, the second rotating plate 3-2, the first bearing 4-1, the second bearing 4-2, the first beam 5-1 and the second beam 5-2 form a rotating part, and the first bearing 4-1 and the second bearing 4-2 serve as a rotating support part, which is free to rotate around the ±Y direction and is positioned by the fixed part.

[0035] The following describes the details of the components. The base 90 is a quadrilateral plate-shaped body that holds the drive unit 8 and the support plate 80. A through hole 91 is provided at the center of the base 90. Two grooves 92 are provided on the inner side of the edge of the -Y side of the base 90, and holes 93 are provided between each groove 92 and the through hole 91.

[0036] The end of the -Z side of the support plate 80 integrated with the drive unit 8 is inserted and fixed in the groove 92. The end of the -Z side of the support shaft 81 is inserted and fixed in each hole 93. The support shaft 81 has a guide cylindrical portion 83 whose end on the -Z side is inserted into the hole 93 and a guide annular portion 82 provided around the guide cylindrical portion 83, and the guide annular portion 82 slides on the outer periphery of the guide cylindrical portion 83 and moves along the ±Z direction.

[0037] The cover 98 is a box-shaped body in a rectangular parallelepiped shape with an open surface on the -Z side, and the end on the -Z side is combined with the side end of the base 90. A through hole is provided at the center of the surface on the +Z side of the cover 98, and two holes 99 are provided between the through hole and the surface on the -Y side corresponding to the hole 93. The end on the +Z side of the guide cylindrical portion of the support shaft 81 is inserted and fixed in the hole 99.

[0038] The bracket 94 is a lens holding portion that holds the lens body 101, and moves along the optical axis direction of the lens body 101. There is a through hole 95 at the center of the bracket 94, and the lens body 101 is fixed in the through hole 95. A groove 96 that penetrates along the Z direction is provided in the center of the surface on the -Y side of the bracket 94. A plate-shaped pressed portion 11 is arranged in a manner that divides the groove 96 into two in the Z direction, and both ends of the plate-shaped pressed portion 11 are buried in the bracket 94. A hole 97 is formed between the surface on the -Y side of the bracket 94 and the through hole 95, corresponding to the hole 93 and the hole 99. The guide annular portion 82 of the support shaft 81 is embedded and fixed in the hole 97. As a result, the bracket 94 is supported to be freely movable along the ±Z directions relative to the fixed portion.

[0039] The support plate 80 is a roughly quadrilateral plate body that is fixed to the groove 92 of the base 90 and supports the drive unit 8 along the X direction. A square hole 84 is formed in the center of the support plate 80, and circular holes 85 are formed on the +X+Z side and the XZ side of the square hole 84. A groove 86 is provided near the center of each end surface on the ±Z side of the support plate 80. The first bearing 4-1 and the second bearing 4-2 of the drive unit 8 are respectively embedded and fixed in the two circular holes 85 of the support plate 80, and the support plate 80 and the drive unit 8 are integrated.

[0040] like Figure 6 (A) and Figure 7 As shown in (A), the first stopper 7-1 and the second stopper 7-2 are L-shaped and have an extension portion 70 extending along the X direction and a protruding piece 75 protruding from the extension portion 70 in the +Y direction. Figure 4 , Figure 6 (A) and Figure 7 As shown in (A), the extension 70 of the first stopper 7-1 is fixed in the groove 86 on the -Z side of the support plate 80, and the extension 70 of the second stopper 7-2 is fixed in the groove 86 on the +Z side of the support plate 80. The protruding piece 75 extends from the groove 86 of the support plate 80 to the +Y side.

[0041] The GND terminal 1 is formed by embedding the bent portion 15 bent into an L shape into the support plate 80. One end of the bent portion 15 along the -Z direction passes through the support plate 80, bends along the -Y side and extends, and the extended end bends along the -Z side so that the base 90 extends toward the -Z side. Figure 6 As shown in (A), the other end of the curved portion 15 extending along the -X direction passes through the center of the square hole 84 of the support plate 80 and extends along the -Y side, and the extended end is bent along the -X side, and the rectangular portion formed by bending along the -X side blocks the opening of the -Y side of the square hole 84 of the support plate 80. The first SMA gripping portion 10 is formed in the rectangular portion.

[0042] The first SMA grip 10 has both the function of gripping the inner end of the first SMA cable 8-1 and the function of a third SMA grip for gripping the inner end of the second SMA cable 8-2. The first SMA cable 8-1 and the second SMA cable 8-2 are cables formed of SMA, and both ends are gripped by the SMA grip. The gripping method is generally riveting, but other methods may be used.

[0043] The + terminal 2-1 and the + terminal 2-2 are provided at both ends of the side along the -Y side of the base 90. The + terminal 2-1 and the + terminal 2-2 have openings along the -Y side. The + terminal 2-1 has a curved portion 25 that is bent in a "-" shape, and the curved portion 25 is embedded in the base 90. One end of the curved portion 25 on the +X side of the + terminal 2-1 is bent and extended along the +Z side, so that the base 90 passes through the +Z side and protrudes on the -Y side of the support plate 80. The other end of the curved portion 25 on the -X side is bent and extended along the -Z side so that the base 90 passes through the -Z side and protrudes. The + terminal 2-2 is mirror-symmetrical with the + terminal 2-1.

[0044] The GND terminal 1, the + terminal 2-1, and the + terminal 2-2 are portions extending from the base 90 toward the -Z side, and are electrically connected to an external power source.

[0045] The first bearing 4 - 1 and the second bearing 4 - 2 include an annular portion 42 whose outer circumference is fixed to the two circular holes 85 of the support plate 80 and a cylindrical portion 43 extending in the Y direction is accommodated in the inner circumference of the annular portion 42 . The cylindrical portion 43 is supported to be freely rotatable around the Y direction relative to the annular portion 42 .

[0046] The support plate 80 has a first beam 5-1 and a second beam 5-2 on the +Y side, and a first rotating plate 3-1 and a second rotating plate 3-2 on the -Y side. The first beam 5-1 and the first rotating plate 3-1 are connected via the cylindrical portion 43 of the first bearing 4-1, and the second beam 5-2 and the second rotating plate 3-2 are connected via the cylindrical portion 43 of the second bearing 4-2.

[0047] The first beam 5-1 is a plate-like body that is elongated in the X direction and has a plate surface with the Y direction as the normal direction. The first beam 5-1 is arranged at the end of the +Y side of the cylindrical portion 43 of the first bearing 4-1, at the center of its circle, and extends from the base end fixed on the cylindrical portion 43 toward the protruding piece 75 of the first stopper 7-1 along the X direction including the Z direction component, that is, the -XZ direction. The first beam 5-1 also bends and extends along the -X side before reaching the protruding piece 75, and bends along the +Y side at the center of the ±X direction of the first SMA gripping portion 10. The portion bent on the +Y side of the first beam 5-1 forms a pressing portion 50, and the surface of the pressed portion 11 facing the pressing portion 50 forms a contact portion 51 that contacts the pressed portion 11 from the -Z side. The second beam 5-2 is configured to be point-symmetrical with the first beam 5-1 with the pressed portion 11 as the center.

[0048] The first rotating plate 3-1 and the second rotating plate 3-2 are substantially L-shaped, and are connected to the ends of the cylindrical portions 43 of the first bearing 4-1 and the second bearing 4-2 on the -Y side at positions corresponding to the intersection of the L letters. The portion of the first rotating plate 3-1 extending in the +X direction and the portion of the + terminal 2-1 extending in the +Z direction are connected by the first spring member 6-1, and the portion of the second rotating plate 3-2 extending in the -X direction and the portion of the + terminal 2-2 extending in the +Z direction are connected by the second spring member 6-2. The second SMA gripping portion 30-1 is formed in the portion of the first rotating plate 3-1 extending in the -Z direction, and the fourth SMA gripping portion 30-2 is formed in the portion of the second rotating plate 3-2 extending in the +Z direction. That is, the second SMA gripping portion 30-1 and the fourth SMA gripping portion 30-2 are arranged at positions away from the center of the cylindrical portion 43 in the Z direction.

[0049] The second SMA grip 30 - 1 grips the outer end of the first SMA cable 8 - 1 . The fourth SMA grip 30 - 2 grips the outer end of the second SMA cable 8 - 2 .

[0050] The second SMA grip 30-1 formed on the first rotating plate 3-1 is electrically connected to the + terminal 2-1 via the first spring member 6-1, and the fourth SMA grip 30-2 formed on the second rotating plate 3-2 is electrically connected to the + terminal 2-2 via the second spring member 6-2.

[0051] Between the first SMA grip 10 and the second SMA grip 30-1, the first SMA cable 8-1 is laid along the -X+Z direction from the second SMA grip 30-1 toward the first SMA grip 10. Between the first SMA grip 10 and the fourth SMA grip 30-2, the second SMA cable 8-2 is laid along the X direction including the Z direction component, i.e., the +X+Z direction, from the fourth SMA grip 30-2 toward the first SMA grip 10. The first SMA cable 8-1 and the second SMA cable 8-2 are connected by the first SMA grip 10. When viewed from the Y direction, the first SMA cable 8-1 intersects with the first beam 5-1, and the second SMA cable 8-2 intersects with the second beam 5-2. That is, toward the -X direction, the first beam 5-1 extends from the center position of the cylindrical portion 43 of the first bearing 4-1 located at the +Z side of the support plate 80 toward the -Z side of the support plate 80. The first SMA cable 8-1 extends from the position on the -Z side toward the center of the support plate 80 from the center of the cylindrical portion 43. In addition, toward the +X direction, the second beam portion 5-2 extends from the center of the cylindrical portion 43 of the second bearing 4-2 located at the -Z side of the support plate 80 toward the +Z side of the support plate 80. The second SMA cable 8-2 extends from the position on the +Z side toward the center of the support plate 80 from the center of the cylindrical portion 43.

[0052] When current is supplied to the + terminal 2-1 and the GND terminal 1, the energization causes heat to contract the first SMA cable 8-1. Through the contraction of the first SMA cable 8-1, the first rotating plate 3-1 resists the elastic force of the first spring member 6-1, and rotates clockwise around the first bearing 4-1 as viewed from the -Y side, and the first beam 5-1 rotates clockwise in conjunction with this rotation. Through the rotation of the first beam 5-1, the pressing portion 50 of the first beam 5-1 pushes the pressed portion 11 toward the +Z side, and the pressed portion 11 and the bracket 94 integrated therewith move along the +Z direction. When the first beam 5-1 rotates to the position where the end face of the +Z side of the second beam 5-2 touches the protruding piece 75 of the second stopper 7-2, it is restricted by the protruding piece 75 and does not rotate further. At this time, the first spring member 6-1 and the second spring member 6-2 are in a compressed state. When the current supply to the + terminal 2-1 and the GND terminal 1 stops, the first rotating plate 3-1 and the first beam 5-1 rotate in the opposite direction due to the restoring force of the first spring member 6-1 and the second spring member 6-2, and the bracket 94 returns to the original position.

[0053] When current is supplied to the + terminal 2-2 and the GND terminal 1, the energization causes heat to contract the second SMA cable 8-2. Due to the contraction of the second SMA cable 8-2, the second rotating plate 3-2 resists the elastic force of the second spring member 6-2, and rotates clockwise around the second bearing 4-2 as viewed from the -Y side, and the second beam 5-2 rotates clockwise in coordination with the rotation. Through the rotation of the second beam 5-2, the pressing portion 50 of the second beam 5-2 pushes the pressed portion 11 toward the -Z side, and the pressed portion 11 and the bracket 94 integrated therewith move along the -Z direction. When the second beam 5-2 rotates to the position where the end face of the -Z side of the first beam 5-1 touches the protruding piece 75 of the first stopper 7-1, it is restricted by the protruding piece 75 and does not rotate further. At this time, the second spring member 6-2 and the first spring member 6-1 are in an extended state. When the current supply to the + terminal 2-2 and the GND terminal 1 stops, the second rotating plate 3-2 and the second beam 5-2 rotate in the opposite direction due to the restoring force of the second spring member 6-2 and the first spring member 6-1, and the bracket 94 returns to the original position.

[0054] The above is the details of the structure of this embodiment. The lens driving device 9 of this embodiment has, in the XYZ coordinate system: a fixed part having a first SMA gripping part 10; a movable part having a bracket 94 as a lens holding part and moving in the +Z direction; a rotating part having a second SMA gripping part 30-1, a first beam part 5-1 and a rotating support part, the rotating support part being freely rotatable around the ±Y direction and being positioned by the fixed part; and a first SMA cable 8-1, which is gripped by the first SMA gripping part 10 and the second SMA gripping part 30-1 and extends along the X direction including the Z direction component. Therefore, the first beam part 5-1 has a contact part 51, which extends along the X direction including the Z direction component, and contacts the movable part from the -Z direction, and the first SMA cable 8-1 and the first beam part 5-1 intersect when viewed from the Y direction. Thus, the structure including the first SMA gripping portion 10 and the second SMA gripping portion 30-1 that grip the first SMA cable 8-1 and its two ends, and the mechanism that pushes the lens holding portion through the first beam portion 5-1 and its front end is not stacked in the Z direction, and the thickness in the Z direction is correspondingly thinned. Therefore, it is possible to provide a lens driving device 9, a camera device 100, and an electronic device that are thin in the Z direction.

[0055] In addition, in the above embodiment, the mechanism including the + terminal 2-1, the second SMA gripping portion 30-1, the first rotating plate 3-1, the first bearing 4-1, the first beam 5-1, the first spring member 6-1 and the first SMA cable 8-1 for driving the bracket 94 along the +Z direction and the mechanism including the + terminal 2-2, the fourth SMA gripping portion 30-2, the second rotating plate 3-2, the second bearing 4-2, the second beam 5-2, the second spring member 6-2 and the second SMA cable 8-2 for driving the bracket 94 along the -Z direction are arranged on the +X side and the -X side of the GND terminal 1. However, it is also possible to have only the mechanism including the GND terminal 1, the + terminal 2-1, the second SMA gripping portion 30-1, the first rotating plate 3-1, the first bearing 4-1, the first beam 5-1 and the first SMA cable 8-1 for driving the bracket 94 along the +Z direction. In this case, a spring member extending along the Z direction may also be arranged between the pressed portion 11 and the second stopper 7-2.

Claims

1. A lens driving device, It is characterized in that In the XYZ coordinate system, it has: a fixing portion having a first SMA grip portion; A movable portion having a lens holding portion and moving in the +Z direction; a rotating portion, comprising a second SMA gripping portion, a beam portion, and a rotating support portion, wherein the rotating support portion is free to rotate around the ±Y direction and is positioned by the fixing portion; as well as The SMA cable is held by the first SMA holding portion and the second SMA holding portion and extends along an X direction including a Z direction component, The beam portion has an abutment portion extending along the X direction including a Z direction component and abutting against the movable portion from the -Z direction. When viewed from the Y direction, the SMA cable and the beam intersect. The first SMA holding portion is formed on the GND terminal, The second SMA grip is electrically connected to the + terminal via a spring member.

2. The lens driving device according to claim 1, It is characterized in that Also available: a third SMA gripping portion, which is disposed on the fixing portion; a second rotating portion, which has a fourth SMA gripping portion and a second beam portion, is free to rotate about the Y direction and is positioned by the fixing portion; as well as a second SMA cable, held by the third SMA holding portion and the fourth SMA holding portion, extending along an X direction including a Z direction component, The second beam portion has a second abutting portion extending along the X direction including a Z direction component and abutting against the movable portion from the +Z direction. When viewed from the Y direction, the second SMA cable intersects with the second beam portion. The movable portion moves in the -Z direction.

3. The lens driving device according to claim 2, It is characterized in that The first SMA handle also serves as the third SMA handle, and the SMA cable and the second SMA cable are connected by the first SMA handle.

4. The lens driving device according to claim 1, It is characterized in that The rotation support part is a bearing, and the bearing has: a cylindrical part extending along the Y direction; and an annular part that rotatably holds the cylindrical part and is fixed by the fixing part. The cylindrical portion is provided with the second SMA gripping portion at one end and the beam portion at the other end.

5. The lens driving device according to claim 1, It is characterized in that The rotation support part is a bearing, and the bearing has: a cylindrical part extending along the Y direction; and an annular part that rotatably holds the cylindrical part and is fixed by the fixing part. The second SMA gripping portion is provided at a position away from the center of the cylindrical portion in the Z direction.

6. The lens driving device according to claim 1, It is characterized in that The rotation support part is a bearing, and the bearing has: a cylindrical part extending along the Y direction; and an annular part that rotatably holds the cylindrical part and is fixed by the fixing part. The beam portion is provided at the center of the cylindrical portion.

7. The lens driving device according to claim 1, It is characterized in that The fixing portion fixes the guide cylindrical portion extending along the Z direction, The movable part fixes a guide ring part extending along the Z direction, The guide annular portion slides on the outer circumference of the guide cylindrical portion and moves along the Z direction.

8. A camera device, It is characterized in that A lens driving device according to any one of claims 1 to 7 is provided.

9. An electronic device, It is characterized in that A camera device according to claim 8.

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