JP2016053627A - Lens driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens driving device capable of dealing with an increase in the speed of autofocus.SOLUTION: A lens driving device 100 comprises: a lens holding member 2 capable of holding a lens body LE; an energizing member 60 movably supporting the lens holding member 2 in an optical axis direction DR1 and composed of upper-side flat springs 10 and lower-side flat springs 11; a fixing-side member 50 for fixing a portion of the energizing member 60; and a driving mechanism 70 for moving the lens holding member 2. At least one flat spring 60a of the energizing member 60 includes: a first portion 60b; a second portion 60c; an elastic arm part 60d provided between the first portion 60b and the second portion 60c; and an extension part 60e extending from the middle of the elastic arm part 60d. A damper material 12 is provided so as to connect at least one of: the extension part 60e and the lens holding member 2 or the first portion 60b; and the extension part 60 e and the fixing-side member 50 or the second portion 60c.SELECTED DRAWING: Figure 24

Description

  The present invention relates to a lens driving device, and more particularly to a lens driving device compatible with autofocus.

  2. Description of the Related Art In a portable device having a function of taking a still image or a moving image, a lens driving device using a voice coil motor is provided to drive a shooting lens. As such a lens driving device, a lens driving device described in Patent Document 1 below is known.

  Hereinafter, the lens driving device described in Patent Document 1 will be described with reference to FIG. FIG. 27 is an exploded perspective view showing the configuration of the lens driving device 900 described in Patent Document 1. As shown in FIG.

  A lens driving device 900 described in Patent Document 1 includes a yoke 908 having an outer wall portion 908g, a plurality of inner wall portions 908b, and a connecting portion 908h, and a lens holding body that is disposed inside the yoke 908 and can hold the lens body. 903, a coil 904 wound around the lens holder 903, a magnet 905 disposed opposite to the inner wall portion 908b across the coil 904, an elastic member 911 that supports the lens holder 903 so as to be movable in the optical axis direction, have. The coil 904 is arranged so as to cross the magnetic field generated by the magnet 905. When a current flows through the coil 904 arranged in this manner, an induced electromotive force is generated in the coil 904, and the lens holder 903 around which the coil 904 is wound moves in the optical axis direction of the lens body. As described above, the lens holder 903 moves in the optical axis direction of the lens body, whereby the image to be photographed can be focused.

No. 3179634

  Recently, an increasing number of portable devices have an autofocus shooting function. In addition, it is desired to focus on autofocus faster. That is, in the lens driving device, there is a demand for a lens driving device that can cope with high-speed autofocus.

  However, in the lens driving device 900 described in Patent Document 1, when an attempt is made to move the lens holder 903 by a predetermined distance, an urging force of the elastic member 911 and an electromagnetic force generated by a current passed through the coil 904 are generated. However, it is preferable to stop at the balanced position, but the lens holder 903 is moved beyond a predetermined distance by the inertial force, and the elastic member 911 is bent excessively. Thereafter, the bent elastic member 911 pulls the lens holding body 903 back to a predetermined distance, and the pulled-back lens holding body 903 again moves beyond a predetermined distance due to inertial force. In this manner, an undesirable vibration is generated by the inertial force of the lens holder 903, and the position of the lens body (lens holder 903) is not determined until the vibration of the lens holder 903 is settled. That is, it takes a long time until the position of the lens body is determined, and it is difficult to cope with the high speed autofocus.

  The present invention solves the above-described problems and provides a lens driving device that can cope with high-speed autofocusing.

  The lens driving device of the present invention fixes a cylindrical lens holding member that can hold a lens body, a biasing member that supports the lens holding member so as to be movable in the optical axis direction, and a part of the biasing member. And a driving mechanism configured to include at least a driving magnet and a coil for moving the lens holding member along the optical axis direction, and the urging member of the lens holding member The upper plate spring is fixed to the upper part, and the lower plate spring is fixed to the lower part. At least one of the upper plate spring and the lower plate spring is fixed to the lens holding member. In the lens driving device having a portion, a second portion fixed to the fixed-side member, and an elastic arm portion provided between the first portion and the second portion, the one leaf spring includes: Extending from the middle of the elastic arm At least one of the extension part and the lens holding member or the first part, and between the extension part and the fixed-side member or the second part. A damper material is provided to connect the gaps.

  As a result, the damper material is provided between at least one of the extension part of the leaf spring and the first part of the lens holding member or the leaf spring, and between the extension part and the fixed side member or the second part. Therefore, when the coil is energized and the lens holding member moves in the optical axis direction, it is possible to prevent the lens holding member from moving too much, so the time required to settle at a predetermined position can be shortened. Further, when the lens holding member moves in the optical axis direction, the middle part of the elastic arm provided between the first portion and the second portion of the leaf spring also moves to some extent in the same direction as the lens holding member. It will be a thing. For this reason, when the damper material is provided between the extending portion extending from the middle of the elastic arm portion of the leaf spring and the first portion of the lens holding member or the leaf spring, the damper holding member is moved. Therefore, the damper material can be prevented from being greatly deformed, and therefore, it is possible to make the damper material less likely to be damaged such as breaking or dropping. Similarly, even when the damper material is provided between the extension portion of the elastic arm portion of the leaf spring and the fixed side member or the second portion of the leaf spring, the damper material increases as the lens holding member moves. Since the deformation can be suppressed, the damper material can be hardly damaged.

  In the lens driving device of the present invention, the elastic arm portion is provided in a plurality between the first portion and the second portion, and the extending portion connects the adjacent elastic arm portions to each other. It consists of the connected part.

  Thereby, since the extension part was made into the connection part which connects adjacent elastic arm parts, the area | region which can provide a damper material becomes wide, and it becomes easy to provide a damper material. In addition, since the elastic arm portions are connected to each other, they can be supported by the adjacent elastic arm portions, and the rigidity in the direction (horizontal direction) intersecting the optical axis direction of the lens holding member can be increased. The posture can be stabilized.

  In the lens driving device of the present invention, the elastic arm portion has at least one bent portion, and the bent portions of the adjacent elastic arm portions are connected by the connecting portion. To do.

  As a result, the bent portion with a small amount of deformation in the optical axis direction is connected to the connecting portion, and the connecting portion rarely restricts the movement of the elastic arm portion in the optical axis direction. It can be secured. In addition, since the bent portions having a small amount of deformation in the optical axis direction are connected by the connecting portion, it is difficult to make a difference in the position of the adjacent bent portions in the optical axis direction, and the lens holding member can be hardly tilted. .

  The lens driving device of the present invention is characterized in that the one leaf spring is an upper leaf spring.

  Thereby, since one leaf | plate spring is not hidden with a lens holding member, it becomes possible to provide a damper material even after incorporating.

  In the lens driving device of the present invention, the lens holding member is accommodated in a case having an opening, and the damper material is made of an ultraviolet curable gel resin and exposed from the opening of the case. It is characterized by that.

  Thereby, after the assembly, the damper material (gel resin) can be applied from the opening, and the damper material can be irradiated with ultraviolet rays, so that the assembly is facilitated.

  In the lens driving device of the present invention, the damper material is provided so as to connect between the connecting portion and the lens holding member or the first portion, and the connecting portion and the fixed-side member or the The damper material is provided so as to connect between the second portion and the second portion.

  Accordingly, by providing a damper material between the connecting portion and the first portion of the lens holding member or the leaf spring and between the connecting portion and the fixed side member or the second portion, the coil is energized. The time until the lens holding member settles at a predetermined position can be further shortened.

  In the lens driving device of the present invention, the connecting portion has a wide portion formed wider than other portions of the connecting portion, and the connecting portion and the lens holding member or the first portion. A part of the damper material provided between the connecting portion and the damper material provided between the connecting portion and the fixed side member or the second portion is placed on the wide portion. It is characterized by being provided continuously.

  Thereby, since both damper materials can be provided in the same process, workability | operativity is good. Moreover, since the damper material is provided in the wide part, the contact area of a damper material and a connection part can be increased, and a damper material can be reliably hold | maintained to a required part.

  In the lens driving device of the present invention, the damper material is provided at a position facing each other across the central portion of the lens holding member so as to form a pair.

  Thus, by providing the damper material at a position facing the center portion of the lens holding member so as to form a pair, the damper material can be arranged in a well-balanced manner with respect to the lens holding member. Becomes difficult to tilt.

  According to the present invention, when the lens holding member moves in the optical axis direction, it is possible to suppress the movement of the lens holding member excessively, and therefore it is possible to shorten the time until the lens holding member settles at a predetermined position.

It is a figure which shows the external appearance of the lens drive device 100 in 1st Embodiment, Fig.1 (a) is a perspective view which shows the external appearance of the lens drive device 100, FIG.1 (b) is described in Fig.1 (a). It is a top view which shows the lens drive device 100 of the state seen from the Z1 direction side. It is a disassembled perspective view which shows the structure of the lens drive device 100 in 1st Embodiment. FIGS. 3A and 3B are diagrams illustrating a fixed-side member 50 according to the first embodiment, FIG. 3A is an exploded perspective view illustrating a configuration of the fixed-side member 50, and FIG. 3B is a perspective view illustrating an appearance of the fixed-side member 50. FIG. It is a figure which shows the spacer 13 in 1st Embodiment, Fig.4 (a) is a perspective view which shows the external appearance of the spacer 13, FIG.4 (b) was seen from the Z2 direction side as described in Fig.4 (a). It is a perspective view which shows the spacer 13 of a state. It is a figure which shows the case 1 in 1st Embodiment, Fig.5 (a) is a perspective view which shows the external appearance of the case 1, FIG.5 (b) was seen from the Z2 direction side as described in Fig.5 (a). It is a perspective view which shows case 1 of a state. It is a figure which shows the base member 8 in 1st Embodiment, Fig.6 (a) is a perspective view which shows the external appearance of the base member 8, FIG.6 (b) is from the Z1 direction side as described in Fig.6 (a). It is a top view which shows the base member 8 of the state seen. It is a figure which shows the metal member 8m embed | buried under the base member 8 in 1st Embodiment, Fig.7 (a) is a perspective view which shows the external appearance of the metal member 8m, FIG.7 (b) is FIG.7 (a). It is a top view which shows 8 m of metal members of the state seen from the Z1 direction side of description. It is a figure which shows the plate-shaped member 9 in 1st Embodiment, Fig.8 (a) is a perspective view which shows the external appearance of the plate-shaped member 9, FIG.8 (b) is the Y1 direction as described in Fig.8 (a) It is a perspective view which shows the plate-shaped member of the state seen from the side. It is a perspective view which shows the external appearance of the coil 4 in 1st Embodiment. It is a figure which shows the lens holding member 2 in 1st Embodiment, Fig.10 (a) is a perspective view which shows the external appearance of the lens holding member 2, FIG.10 (b) is X2 direction as described in Fig.10 (a) It is a side view which shows the lens holding member 2 of the state seen from the side. It is a figure which shows the lens holding member 2 in 1st Embodiment, Fig.11 (a) is a top view which shows the lens holding member 2 of the state seen from the Z1 direction side as described in Fig.10 (a), and FIG. (B) is a top view which shows the lens holding member 2 of the state seen from the Z2 direction side as described in Fig.10 (a). It is a figure which shows the lens holding member 2 in which the coil 4, the detection magnet 5, and the balancer 7 in 1st Embodiment were integrally formed, Fig.12 (a) is the coil 4, the detection magnet 5, and the balancer 7 integrally. FIG. 12B is a perspective view showing the formed lens holding member 2, and FIG. 12B is a diagram in which the coil 4, the detection magnet 5, and the balancer 7 are integrally formed as viewed from the Z1 direction side shown in FIG. It is a top view which shows the made lens holding member 2. FIG. It is an expansion perspective view which expands and shows the state which looked at A section of Drawing 12 (a) from the Z2 direction side. It is a perspective view which shows the external appearance of the biasing member 60 in 1st Embodiment. It is a figure which shows the upper side leaf | plate spring 10 in 1st Embodiment, Fig.15 (a) is a perspective view which shows the external appearance of the upper side leaf | plate spring 10, FIG.15 (b) is Z1 direction as described in Fig.15 (a) It is a top view which shows the upper leaf | plate spring 10 of the state seen from the side. It is a figure which shows the lower leaf | plate spring 11 in 1st Embodiment, FIG.16 (a) is a perspective view which shows the external appearance of the lower leaf | plate spring 11, FIG.16 (b) is Z1 direction as described in Fig.16 (a) It is a top view which shows the lower leaf | plate spring 11 of the state seen from the side. It is a figure explaining the fixing method of the upper leaf | plate spring 10 and the spacer 13 to the case 1 in 1st Embodiment, Fig.17 (a) is a disassembled perspective view which shows the case 1, the upper leaf | plate spring 10, and the spacer 13, FIG. 17B is a perspective view showing a state in which the upper leaf spring 10 and the spacer 13 are fixed to the case 1, and FIG. 17C shows a portion B shown in FIG. 17B viewed from the Z2 direction side. It is the enlarged view which expanded and showed the state. It is a figure explaining the fixing method of the drive magnet 3 and the plate-shaped member 9 to the case 1 in 1st Embodiment, Fig.18 (a) is a disassembled perspective view which shows the case 1, the drive magnet 3, and the plate-shaped member 9. FIG. FIG. 18B is a perspective view showing a state in which the driving magnet 3 and the plate-like member 9 are fixed to the case 1, and FIG. 18C is a perspective view showing an attachment state of the magnetic detection member 6. FIG. It is a figure explaining the fixing method of the lower leaf | plate spring 11 to the lens holding member 2 in 1st Embodiment, Fig.19 (a) is a disassembled perspective view which shows the lens holding member 2 and the lower leaf | plate spring 11, FIG. FIG. 4B is a perspective view illustrating a state where the lower leaf spring 11 is fixed to the lens holding member 2. FIG. 20B is an enlarged view showing a C portion shown in FIG. 19B, and FIG. 20A is an enlarged plan view showing the C portion as viewed from the Z2 direction side shown in FIG. 20 (b) is an enlarged side view showing a portion C as seen from the X2 direction side shown in FIG. It is a figure explaining the fixing method of the lens holding member 2 to the base member 8 in 1st Embodiment, Fig.21 (a) is a disassembled perspective view which shows the lens holding member 2 and the base member 8, FIG.21 (b) ) Is a perspective view showing a state in which the lens holding member 2 is fixed to the base member 8 via the lower leaf spring 11. It is a figure which shows the lens holding member 2 and the base member 8 which were integrally formed via the lower leaf | plate spring 11 in 1st Embodiment, and Fig.22 (a) is the state seen from the Z1 direction side of FIG. FIG. 22B is a plan view showing the lens holding member 2 and the base member 8 which are integrally formed, and FIG. 22B is a lens holding member 2 which is integrally formed when viewed from the Y1 direction side shown in FIG. FIG. 22 (c) is an enlarged view showing the portion D shown in FIG. 22 (a) in an enlarged manner. It is a figure explaining the fixing method to the base member 8 of the case 1 in 1st Embodiment, Fig.23 (a) is a disassembled perspective view which shows the case 1 and the base member 8, FIG.23 (b) is a lens. FIG. 2 is a perspective view illustrating an appearance of a driving device 100. FIG. 24A is a diagram illustrating the arrangement configuration of the damper member 12, and FIG. 24A is a plan view illustrating the lens driving device 100 in a state viewed from the Z1 direction side illustrated in FIG. 23B, and FIG. ) Is an enlarged view showing an E portion shown in FIG. It is a schematic diagram which shows the internal structure of the lens drive device 100 in 1st Embodiment, Fig.25 (a) shows the internal structure of the lens drive device 100 of the state seen from the Z1 direction side as described in FIG.23 (b). FIG. 25B is a schematic diagram illustrating an internal structure of the lens driving device 100 as viewed from the X2 direction side illustrated in FIG. In FIG. 25, some components such as the upper leaf spring 10 and the spacer 13 are not shown for ease of explanation. It is a figure which shows the modification of the arrangement configuration of the damper material 12 in 1st Embodiment, and Fig.26 (a) is a schematic which shows the modification which provided the damper material 12 only between the connection part 60f and the stationary-side member 50. FIG. FIG. 26B is a schematic view showing a modification in which the damper material 12 is provided only between the connecting portion 60f and the first portion 60b. In FIG. 26, some components are not shown for ease of explanation. Further, the upper leaf spring 10 shown in FIG. 26B is different in structure from the upper leaf spring 10 in the first embodiment, but uses the same part name and symbol. It is a disassembled perspective view which shows the structure of the lens drive device 900 of patent document 1. FIG.

[First Embodiment]
The lens driving device 100 in the first embodiment will be described below.

  First, the configuration of the lens driving device 100 according to the first embodiment will be described with reference to FIGS. FIG. 1 is a diagram illustrating an appearance of the lens driving device 100 according to the first embodiment, FIG. 1A is a perspective view illustrating an appearance of the lens driving device 100, and FIG. 1B is a diagram illustrating FIG. It is a top view which shows the lens drive device 100 of the state seen from the Z1 direction side of description. FIG. 2 is an exploded perspective view showing the configuration of the lens driving device 100 according to the first embodiment. FIG. 3 is a view showing the fixed-side member 50 in the first embodiment, FIG. 3A is an exploded perspective view showing the configuration of the fixed-side member 50, and FIG. 3B is an external view of the fixed-side member 50. FIG. 4 is a view showing the spacer 13 in the first embodiment, FIG. 4 (a) is a perspective view showing the appearance of the spacer 13, and FIG. 4 (b) is the Z2 direction side described in FIG. 4 (a). It is a perspective view which shows the spacer 13 of the state seen from. FIG. 5 is a view showing the case 1 in the first embodiment, FIG. 5 (a) is a perspective view showing an appearance of the case 1, and FIG. 5 (b) is a Z2 direction side as shown in FIG. 5 (a). It is a perspective view which shows case 1 of the state seen from. FIG. 6 is a view showing the base member 8 in the first embodiment, FIG. 6 (a) is a perspective view showing the appearance of the base member 8, and FIG. 6 (b) is Z1 shown in FIG. 6 (a). It is a top view which shows the base member 8 of the state seen from the direction side. FIG. 7 is a view showing the metal member 8m embedded in the base member 8 in the first embodiment, FIG. 7A is a perspective view showing the appearance of the metal member 8m, and FIG. It is a top view which shows the metal member 8m of the state seen from the Z1 direction side as described in 7 (a). FIG. 8 is a view showing the plate-like member 9 in the first embodiment, FIG. 8A is a perspective view showing the appearance of the plate-like member 9, and FIG. 8B is shown in FIG. 8A. It is a perspective view which shows the plate-shaped member 9 of the state seen from the Y1 direction side. FIG. 9 is a perspective view showing the appearance of the coil 4 in the first embodiment. FIG. 10 is a view showing the lens holding member 2 in the first embodiment, FIG. 10 (a) is a perspective view showing the appearance of the lens holding member 2, and FIG. 10 (b) is shown in FIG. 10 (a). It is a side view which shows the lens holding member 2 of the state seen from the X2 direction side. FIG. 11 is a view showing the lens holding member 2 in the first embodiment, and FIG. 11A is a plan view showing the lens holding member 2 in a state viewed from the Z1 direction side shown in FIG. 10A. FIG. 11B is a plan view showing the lens holding member 2 in a state viewed from the Z2 direction side shown in FIG. FIG. 12 is a view showing the lens holding member 2 in which the coil 4, the detection magnet 5, and the balancer 7 are integrally formed in the first embodiment, and FIG. 12A is a view showing the coil 4, the detection magnet 5, and the balancer 7. FIG. 12B is a perspective view showing the lens holding member 2 integrally formed, and FIG. 12B shows the coil 4, the detection magnet 5, and the balancer 7 as viewed from the Z1 direction side shown in FIG. It is a top view which shows the lens holding member 2 formed integrally. FIG. 13 is an enlarged perspective view showing an enlarged view of the portion A shown in FIG. 12A viewed from the Z2 direction. FIG. 14 is a perspective view showing an appearance of the urging member 60 in the first embodiment. FIG. 15 is a view showing the upper leaf spring 10 in the first embodiment, FIG. 15A is a perspective view showing the appearance of the upper leaf spring 10, and FIG. 15B is shown in FIG. It is a top view which shows the upper side leaf | plate spring 10 of the state seen from the Z1 direction side. FIG. 16 is a view showing the lower leaf spring 11 in the first embodiment, FIG. 16 (a) is a perspective view showing an appearance of the lower leaf spring 11, and FIG. 16 (b) is shown in FIG. 16 (a). It is a top view which shows the lower leaf | plate spring 11 of the state seen from the Z1 direction side.

  The lens driving device 100 according to the first embodiment is formed in a rectangular parallelepiped shape having a hole penetrating in the vertical direction (Z1-Z2 direction) as shown in FIG. 1, and as shown in FIG. The lens holding member 2, the urging member 60, the drive mechanism 70, the position detection means 80, and the damper material 12 are provided. The fixed side member 50 includes a housing 40 including the case 1 and the base member 8 and a spacer 13. The urging member 60 includes the upper leaf spring 10 and the lower leaf spring 11, the drive mechanism 70 includes the drive magnet 3 and the coil 4, and the position detection means 80 includes the detection magnet 5 and the magnetic detection. And a member 6.

  As shown in FIG. 3, the fixed side member 50 includes a case 1, a base member 8, and a spacer 13. Since the housing 40 is formed from the case 1 and the base member 8, it can be said that the fixed-side member 50 includes the housing 40.

  The spacer 13 is made of a synthetic resin material, and is formed in a rectangular ring shape in plan view from above (Z1 direction side) as shown in FIG. The spacer 13 is formed with positioning protrusions 13a formed so as to protrude downward on the lower surfaces of a pair of diagonal positions (X1 direction side and Y2 direction side, X2 direction side and Y1 direction side). The positioning protrusions 13a are formed so as to protrude in a columnar shape, and two are provided at a pair of diagonal positions.

  The case 1 is formed of a metal plate made of a non-magnetic metal material, and is formed in a rectangular parallelepiped shape that is hollow and open downward (on the Z2 direction side) as shown in FIG. The case 1 has four side wall portions 1b erected in the vertical direction at positions corresponding to the side surfaces of the rectangular parallelepiped, and the adjacent side wall portions 1b are connected by the corner portions 1a. In addition, one side wall portion 1b (arranged on the Y2 direction side) is formed with a protruding portion 1c protruding downward from the lower end portion, and the protruding portion 1c is close to one side (X2 direction side). Placed in position. The case 1 covers the upper part of the case 1 and has a top surface portion 1e formed integrally with the corner portion 1a and the side wall portion 1b. Moreover, the case 1 has the opening part 1d opened circularly in the center part of the top | upper surface part 1e. The optical axis LS is orthogonal to the top surface portion 1e and passes through the center of a circle formed by the opening 1d. The case 1 formed in this way is sized so that the spacer 13 can be disposed inside the hollow.

  As shown in FIG. 6, the base member 8 is made of a synthetic resin material and is formed in a plate shape having a rectangular outer shape and a circular opening on the inner side in plan view from above (Z1 direction side). The pedestal portion 8e is provided. The pedestal portion 8e has a lower leaf spring arrangement portion 8f that protrudes upward at the four corners of the upper surface and has an upper surface formed flat, and protrudes upward on the upper surface of the lower leaf spring arrangement portion 8f into a cylindrical shape. Each of the formed lower leaf spring fixing protrusions 8g is provided. Further, the side end portion 8c, which is one side surface (side surface on the Y2 direction side) of the base member 8, has a notch 8d formed in a concave shape on one side (X2 direction side). Further, the base member 8 is formed with a restriction wall 8h protruding upward in a wall shape connecting the lower leaf spring arrangement portions 8f on the upper surface facing the side end 8c, and the extending direction of the restriction wall 8h ( In the central portion in the (X1-X2 direction), a regulating recess 8k is formed so as to divide the regulating wall 8h. The restriction recess 8k is formed so as to be cut to a position reaching the upper surface of the pedestal portion 8e. Further, a metal member 8m as shown in FIG. 7 is embedded in the pedestal portion 8e, and a part thereof is exposed or protrudes from the pedestal portion 8e. Each of the metal members 8m is made of a metal plate, and each of the metal members 8m is formed in an arc shape, arranged side by side along the opening of the pedestal portion 8e, and arranged adjacent to each other to form a first metal member 8n that forms a circle and the first It consists of two metal members 8p and fixing plates 8q respectively disposed at the four corners of the pedestal portion 8e. The first metal member 8n, the second metal member 8p, and the fixing plate 8q are not electrically connected. A first power supply terminal 8r bent downward (Z2 direction) is formed on one end side (Y2 direction side) of the first metal member 8n, and a first connection part bent upward is formed on the other end side. 8s is formed. Also, a second power supply terminal 8t bent downward is formed on one end side (Y2 direction side) of the second metal member 8p, and a second connection portion 8v bent upward is formed on the other end side. Is formed. In addition, a part of the fixed plate 8q disposed in the vicinity of the first power supply terminal 8r extends downward to form a grounding terminal 8b. The metal member 8m formed in this way has a part of the fixed plate 8q, the first power supply terminal 8r, the first connection part 8s, the second power supply terminal 8t, the second connection part 8v, and the grounding terminal 8b, as a base part. It is exposed or protrudes from 8e. As shown in FIG. 6, the first feeding terminal 8r, the second feeding terminal 8t, and the grounding terminal 8b are provided with a notch 8d on the other side (X1 direction side) of the side end 8c, that is, the side end 8c. The second power supply terminal 8t, the first power supply terminal 8r, and the grounding terminal 8b are arranged in this order from the side close to the notch 8d (X2 direction side) so as to protrude downward from the portion that is not provided. By arranging them side by side in this way, a power supply terminal 8a including the first power supply terminal 8r and the second power supply terminal 8t is provided. Note that the power supply terminals 8a and the ground terminals 8b are aligned in the same straight line at the same pitch. Further, the first connection portion 8s is exposed on the upper surface of the lower leaf spring arrangement portion 8f arranged on the side (Y1 direction side) opposite to the side end portion 8c and on the other side (X1 direction side). The second connection portion 8v is exposed on the upper surface of the lower leaf spring arrangement portion 8f arranged on the side facing the end portion 8c and on one side (X2 direction side). The optical axis LS is provided so as to pass through the center of the opening of the pedestal portion 8e and to be orthogonal to the pedestal portion 8e.

  The case 1 is placed over the base member 8 formed in this manner, and the base member 8 is integrated with the case 1, thereby forming the housing 40 in a rectangular parallelepiped shape as shown in FIG. The fixed-side member 50 is formed by forming the housing 40 in a state where the spacer 13 is fixed inside the case 1. The method for fixing the spacer 13 will be described separately.

  As shown in FIG. 8, the plate member 9 is formed in a plate shape. The plate-like member 9 has a base material portion 9d made of a synthetic resin material and formed in a plate shape, and a metal member formed so as to form a conductive pattern is embedded in the base material portion 9d. In addition, the dimension in the width direction (X1-X2 direction) of the base material part 9d is formed in the dimension which can be inserted in the notch part 8d of the base member 8. FIG. The metal member embedded in the plate-like member 9 is continuously formed on the conductive member 9b and the conductive member 9b that is exposed on one surface side (the surface on the Y1 direction side) of the base material portion 9d and forms a conductive pattern. And a plurality of external terminals 9a protruding downward from the lower end (Z2 direction side end) of the base material portion 9d. In the first embodiment, four external terminals 9a are provided, and the four external terminals 9a are in the same straight line at the same pitch as the pitch where the power supply terminals 8a and the ground terminals 8b are arranged. It is in a line. Further, a stepped portion 9e protruding from the other surface is formed at the lower end portion on the other surface side of the plate-like member 9, and the stepped portion 9e is divided at the center in the width direction of the stepped portion 9e. An engaging portion 9c formed in a groove shape is provided. In addition, the engaging part 9c is formed in the space | interval which can insert the protrusion part 1c of the case 1. FIG. Moreover, in 1st Embodiment, the magnetic detection member 6 is mounted in the one surface side of the plate-shaped member 9, and is being fixed to the electrically-conductive member 9b by soldering. The magnetic detection member 6 fixed to the one surface side of the plate-like member 9 is electrically connected and conductive with the conductive member 9b exposed on the one surface side of the plate-like member 9. That is, the external terminal 9a is electrically connected to the magnetic detection member 6 through the conductive member 9b.

  The magnetic detection member 6 is a Hall element (Hall IC) in the first embodiment. The magnetic detection member 6 is formed in a rectangular parallelepiped shape, and one surface (the surface on the Y1 direction side) is a detection surface 6a capable of detecting magnetism, and is used for input or output at both ends of the back surface of the detection surface 6a. It has a terminal portion 6b. In addition, when fixing to the plate-shaped member 9, the terminal part 6b is soldered to the electrically-conductive member 9b.

  As shown in FIG. 2, the driving magnet 3 is a magnet formed in a columnar shape having a trapezoidal shape with legs having the same cross-sectional shape. The angle formed by the two trapezoidal legs is 90 degrees. The driving magnet 3 is magnetized such that the surface including the upper base of the trapezoid and the surface including the lower base having a cross-sectional shape become magnetic poles.

  As shown in FIG. 2, the detection magnet 5 is a magnet formed in a rectangular plate shape. The detection magnet 5 is magnetized so that the plate surface (the surface having the largest area) becomes a magnetic pole.

  As shown in FIG. 2, the balancer 7 has the same shape and the same weight as the detection magnet 5. In the first embodiment, the balancer 7 is formed of the same shape as the detection magnet 5 and is magnetized in the same manner as the detection magnet 5.

  The coil 4 is made of a metal wire, and has a winding portion 4a formed so as to be wound around a polygonal columnar object as shown in FIG. 9, and end portions 4b on both sides of the metal wire are wound. It extends from the turning part 4a. Moreover, although the surface of the metal wire which forms the coil 4 is covered with the insulating material, a part of the end portion 4b is not provided with the insulating material.

  The lens holding member 2 is made of a synthetic resin material and is formed in a cylindrical shape capable of holding the lens body LE as shown in FIG. The lens holding member 2 has a cylindrical portion 2a formed in a cylindrical shape, and the outer peripheral surface of the cylindrical portion 2a is formed to be an octagon when viewed from above, and the cylindrical portion 2a A thread that enables the lens body LE to be screwed is formed on the inner wall surface. Note that the optical axis LS of the lens body LE coincides with the central axis of the cylindrical portion 2a. An upper leaf spring is formed on the upper end (Z1 direction side) of the cylindrical portion 2a at a position (X1 direction side and X2 direction side) facing each other with the optical axis LS sandwiched between them in a flat surface shape. Part 2b is formed. A lower flange 2c protruding in a direction orthogonal to the outer peripheral surface of the cylindrical portion 2a is provided at the lower end portion of the cylindrical portion 2a over substantially the entire circumference of the cylindrical portion 2a. In addition, a protruding portion 2e that protrudes further outward than the lower flange 2c is formed in a part of the lower flange 2c. The protruding portion 2e has a size that can be inserted into the restriction recess 8k of the base member 8, and is provided on the Y1 direction side in the first embodiment. Further, on the upper end side of the cylindrical portion 2a, an upper flange portion 2d protruding in a direction orthogonal to the outer peripheral surface of the cylindrical portion 2a is separated from the lower flange portion 2c and almost the entire cylindrical portion 2a is disposed. It is provided over the circumference. As shown in FIG. 11, a magnet holding part 2f formed in a concave shape into which the detection magnet 5 can be inserted is provided in a part of the upper collar part 2d, and the magnet holding part 2f is sandwiched between the optical axis LS. A balancer holding portion 2g formed in a concave shape into which the balancer 7 can be inserted is provided at the facing position. In the first embodiment, the magnet holding part 2f is formed at a position on the X2 direction side and the Y2 direction side of the upper flange part 2d, and the balancer holding part 2g is a position on the X1 direction side and the Y1 direction side. Is formed. Further, as shown in FIG. 10, the portion sandwiched between the lower flange portion 2c and the upper flange portion 2d of the cylindrical portion 2a becomes a coil holding portion 2h. Further, as shown in FIG. 11, a lower leaf spring holding portion 2k is provided on the lower surface of the lower flange portion 2c at a position opposed to the optical axis LS. In the first embodiment, the lower leaf spring holding portions 2k are provided on the Y1 direction side and the Y2 direction side so as to protrude downward from the lower surface of the lower flange 2c and to follow the opening of the cylindrical portion 2a. The protruding tip side is formed in a flat surface. Further, at both ends of the lower leaf spring holding portion 2k, there are provided lower leaf spring holding protrusions 2m that protrude downward from the lower leaf spring holding portion 2k and are formed in a columnar shape. Further, as shown in FIGS. 10 and 11, the lower surface of the lower flange portion 2 c is formed from the lower surface of the lower flange portion 2 c on the direction side perpendicular to the straight line connecting the lower leaf spring holding portions 2 k. A coil winding portion 2n that protrudes downward and is formed in a rectangular parallelepiped shape is provided.

  In the first embodiment, as shown in FIG. 12, the coil 4 is wound around the coil holding portion 2 h (see FIG. 10) of the lens holding member 2 to form a winding portion 4 a and is held at the end. As shown in FIG. 13, the portion 4b is fixed by being wound around the coil winding portion 2n. Further, the detection magnet 5 is inserted into the magnet holding portion 2f of the lens holding member 2 so as to be outside the coil 4, and is fixed by an adhesive. The balancer 7 is inserted into the balancer holding part 2g of the lens holding member 2 so as to be outside the coil 4, and is fixed by an adhesive. In this way, the lens holding member 2, the coil 4, the detection magnet 5, and the balancer 7 are integrally formed. Further, by forming in this way, in the lens holding member 2, the detection magnet 5 is disposed on one side of the position facing the optical axis LS and the balancer 7 is disposed on the other side. . Note that the total weight of the weight of the coil 4, the weight of the detection magnet 5 and the weight of the balancer 7 is lighter than the total weight of the plurality (two in the first embodiment) of the drive magnets 3. .

  As shown in FIG. 14, the urging member 60 includes an upper leaf spring 10 and a lower leaf spring 11, and the upper leaf spring 10 and the lower leaf spring 11 have elasticity. At least one leaf spring 60a of the upper leaf spring 10 and the lower leaf spring 11 includes a first portion 60b, a second portion 60c, and an elastic arm portion 60d provided between the first portion 60b and the second portion 60c. And have. The outline of one leaf spring 60a will be described. A plurality of elastic arm portions 60d are provided between the first portion 60b and the second portion 60c. In the first embodiment, the elastic spring portions 60d are provided at four locations. ing. One leaf spring 60a has an extending portion 60e extending from the middle of the elastic arm portion 60d, and the extending portion 60e includes a connecting portion 60f connecting adjacent elastic arm portions 60d. The elastic arm portion 60d has at least one bent portion 60g, and the bent portions 60g of the adjacent elastic arm portions 60d are connected by a connecting portion 60f. Further, the connecting portion 60f has a wide portion 60h formed wider than other portions of the connecting portion 60f, and a through hole 60k is formed in the wide portion 60h. In the first embodiment, one leaf spring 60 a is the upper leaf spring 10. The details of the one leaf spring 60a will be described below by describing the upper leaf spring 10.

  The upper leaf spring 10 is made of a metal plate and has an upper first portion 10a formed as an arc-shaped flat plate as shown in FIG. The upper first portion 10a is a portion corresponding to the first portion 60b of the one leaf spring 60a. A pair of the upper first portion 10a is disposed at positions (X1 direction side and X2 direction side) facing each other across the center of the arc formed by the upper first portion 10a. A straight line passing through the center of the arc formed by the upper first portion 10a and orthogonal to the upper first portion 10a coincides with the optical axis LS. Further, the upper leaf spring 10 has an upper second portion 10b that is formed in a quadrangular annular shape and is disposed so as to surround the upper first portion 10a when viewed from above (Z1 direction side). ing. The upper second portion 10b is a portion corresponding to the second portion 60c of the one leaf spring 60a described above. The upper leaf spring 10 includes an upper elastic arm portion 10c provided between the upper first portion 10a and the upper second portion 10b. A plurality of upper elastic arm portions 10c are provided between the upper first portion 10a and the upper second portion 10b. In the first embodiment, the upper elastic arm portions 10c are respectively extended from both ends of the upper first portion 10a. It is connected to the four corners of the upper second portion 10b disposed at the position closest to the end of the upper first portion 10a, and is provided at a total of four locations. The upper elastic arm portion 10c has an upper first arm 10d extending from one end portion of the upper first portion 10a. The upper first arm 10d extends in a direction away from the upper first portion 10a so as to follow the arc formed by the upper first portion 10a, and is connected to one end of the upper first bent portion 10e. The upper first bent portion 10e is formed in a semicircular arc shape and is provided to bend in a direction away from the optical axis LS. The upper first bent portion 10e is one of the portions corresponding to the aforementioned bent portion 60g. From the other end of the upper first bent portion 10e, the upper second arm 10f extends so as to be parallel to the upper first arm 10d, and the upper second bent portion 10g formed in a semicircular arc shape. It is connected to one end. Similarly to the upper first bent portion 10e, the upper second bent portion 10g is one of the portions corresponding to the aforementioned bent portion 60g. An upper third arm 10h extends from the other end of the upper second bent portion 10g so as to be parallel to the upper second arm 10f, and is connected to one of the four corners of the upper second portion 10b. . The upper leaf spring 10 has an upper extending portion 10k extending from the upper first bent portion 10e provided in the middle of the upper elastic arm portion 10c toward the adjacent upper elastic arm portion 10c. . The upper extending part 10k is a part corresponding to the aforementioned extending part 60e. The adjacent upper elastic arm portion 10c is an upper elastic arm portion 10c extending from a different upper first portion 10a and provided closer to the upper elastic arm portion 10c as a reference. The upper elastic arm portion 10c. The upper leaf spring 10 has an upper connecting portion 10m that connects the upper first bent portions 10e of the adjacent upper elastic arm portions 10c, and the upper extending portion 10k includes the upper connecting portion 10m. The upper connecting portion 10m is a portion corresponding to the connecting portion 60f described above. Further, the upper connecting portion 10m has two upper wide portions 10n that are formed wider than the other portions of the upper connecting portion 10m, and upper upper through holes 10p are respectively formed in the upper wide portions 10n. . The upper wide portion 10n is a portion corresponding to the aforementioned wide portion 60h, and the upper through hole 10p is a portion corresponding to the through hole 60k. The upper leaf spring 10 formed in this way is movable along the optical axis LS by bending the upper elastic arm portion 10c when the upper second portion 10b is fixed.

  As shown in FIG. 16, the lower leaf spring 11 is formed in a substantially rectangular annular shape by arranging a first lower leaf spring 11a and a second lower leaf spring 11b, which are obtained by processing a metal thin plate, side by side. In addition, since the first lower leaf spring 11a and the second lower leaf spring 11b are formed in line symmetry, in the following explanation, the explanation of the first lower leaf spring 11a will be given with the explanation of the second lower leaf spring 11b. Is omitted. The first lower leaf spring 11a has a lower first portion 11c formed in an arc shape (semicircular shape). Here, the symmetry axis SS of the first lower leaf spring 11a and the second lower leaf spring 11b passes through the center point of the arc formed by the lower first portion 11c when viewed in plan from the Z1 direction side. The optical axis LS passes through the center point of the arc formed by the lower first portion 11c and is orthogonal to the symmetry axis SS. In the lower first portion 11c, a lower mounting portion 11d formed in a flat plate shape is formed in the vicinity of the midpoint position of the arc formed by the lower first portion 11c. Further, the lower first portion 11c has first lower fixing holes 11e formed in through holes into which the lower leaf spring holding protrusions 2m of the lens holding member 2 can be inserted at both ends of the lower first portion 11c. One each is provided. Further, the first lower leaf spring 11a has a lower second portion 11f disposed outside the arc formed by the lower first portion 11c and at a position facing the lower mounting portion 11d. . The lower second portion 11f is formed in a right triangle shape, and each of the second lower fixing holes 11g, which are through holes, is formed one by one. Further, a welded portion 11h which is a rectangular through hole is formed on the lower second portion 11f on one side (Y1 direction side). The first lower leaf spring 11a has a lower elastic arm portion 11k that connects the lower second portion 11f and the lower first portion 11c. The lower elastic arm portion 11k extends from the both end portions of the lower first portion 11c toward the lower attachment portion 11d so as to follow the arc formed by the lower first portion 11c. An arm 11m, an arcuate lower first bent portion 11n having one end connected to the lower first arm 11m, and the lower first bent portion 11n in parallel with the lower first arm 11m. A lower second arm 11p extending from the other end, a lower second bent portion 11q formed in an arc shape and connected at one end to the lower second arm 11p, and in parallel with the lower second arm 11p The lower third arm 11r that extends from the other end of the lower second bent portion 11q and is connected to the lower second portion 11f. The first lower leaf spring 11a extends from the lower first bent portion 11n, and is a lower connection that connects the lower first bent portions 11n that are arranged to face each other with the lower attachment portion 11d interposed therebetween. Part 11s. The lower connecting portion 11s is connected so as to pass outside the arc formed by the lower first portion 11c. The second lower leaf spring 11b is formed in a line-symmetric shape with respect to the first lower leaf spring 11a with the symmetry axis SS interposed therebetween. By disposing the first lower leaf spring 11a and the second lower leaf spring 11b so that both ends of the lower first portion 11c face each other, the lower leaf spring 11 is formed in an annular shape having a rectangular outer shape. The The lower leaf spring 11 formed in this manner can move the lower first portion 11c along the optical axis LS by bending the lower elastic arm portion 11k when the lower second portion 11f is fixed. It is.

  The damper material 12 is made of an ultraviolet curable gel resin. In the first embodiment, TB3168E manufactured by ThreeBond is used.

  Next, the structure of the lens driving device 100 will be described with reference to FIGS. FIG. 17 is a view for explaining a method of fixing the upper leaf spring 10 and the spacer 13 to the case 1 in the first embodiment, and FIG. 17A is an exploded perspective view showing the case 1, the upper leaf spring 10 and the spacer 13. FIG. 17 (b) is a perspective view showing a state in which the upper leaf spring 10 and the spacer 13 are fixed to the case 1, and FIG. 17 (c) shows the portion B shown in FIG. 17 (b) in the Z2 direction. It is the enlarged view which expanded and showed the state seen from the side. FIG. 18 is a view for explaining a method of fixing the driving magnet 3 and the plate-like member 9 to the case 1 in the first embodiment. FIG. 18A shows the case 1, the driving magnet 3 and the plate-like member 9. FIG. 18B is a perspective view showing a state in which the driving magnet 3 and the plate-like member 9 are fixed to the case 1, and FIG. 18C is an attachment state of the magnetic detection member 6. FIG. FIG. 19 is a view for explaining a fixing method of the lower leaf spring 11 to the lens holding member 2 in the first embodiment, and FIG. 19A is an exploded perspective view showing the lens holding member 2 and the lower leaf spring 11. FIG. 19B is a perspective view showing a state in which the lower leaf spring 11 is fixed to the lens holding member 2. 20 is an enlarged view showing a C portion shown in FIG. 19B, and FIG. 20A is an enlarged plan view showing the C portion viewed from the Z2 direction side shown in FIG. FIG. 20 (b) is an enlarged side view showing the C portion as viewed from the X2 direction side shown in FIG. FIG. 21 is a view for explaining a fixing method of the lens holding member 2 to the base member 8 in the first embodiment, and FIG. 21A is an exploded perspective view showing the lens holding member 2 and the base member 8. 21 (b) is a perspective view showing a state in which the lens holding member 2 is fixed to the base member 8 through the lower leaf spring 11. FIG. 22 is a view showing the lens holding member 2 and the base member 8 which are integrally formed via the lower leaf spring 11 in the first embodiment, and FIG. 22 (a) is from the Z1 direction side shown in FIG. It is a top view which shows the lens holding member 2 and the base member 8 which were integrally formed in the state seen, and FIG.22 (b) is the lens formed integrally in the state seen from the Y1 direction side of FIG. It is a side view which shows the holding member 2 and the base member 8, FIG.22 (c) is an enlarged view which expands and shows the D section as described in Fig.22 (a). FIG. 23 is a view for explaining a fixing method of the case 1 to the base member 8 in the first embodiment. FIG. 23 (a) is an exploded perspective view showing the case 1 and the base member 8, and FIG. ) Is a perspective view showing an appearance of the lens driving device 100. FIG. FIG. 24 is a view for explaining the arrangement configuration of the damper member 12, and FIG. 24A is a plan view showing the lens driving device 100 in a state viewed from the Z1 direction side shown in FIG. 24 (b) is an enlarged view showing an E portion shown in FIG. 24 (a) in an enlarged manner. FIG. 25 is a schematic diagram showing the internal structure of the lens driving device 100 according to the first embodiment. FIG. 25A is an internal view of the lens driving device 100 as viewed from the Z1 direction side shown in FIG. FIG. 25B is a schematic diagram showing the internal structure of the lens driving device 100 as viewed from the X2 direction side shown in FIG. 23B. In FIG. 25, for ease of explanation, some components such as the upper leaf spring 10 and the spacer 13 are not shown.

  As shown in FIG. 17, the spacer 13 is disposed inside the case 1 so that the positioning projection 13a protrudes to the open side (Z2 direction side) of the case 1 and contacts the top surface portion 1e. Is fixed to the case 1. The upper leaf spring 10 is disposed inside the case 1 so that the insides of the four corners of the upper second portion 10b engage with the positioning protrusions 13a of the spacer 13, and is fixed to the spacer 13 with an adhesive.

  As shown in FIG. 18, the plate-like member 9 has the side wall portion 1 b in a state where the protruding portion 1 c and the engaging portion 9 c of the case 1 are engaged and the external terminal 9 a is exposed to the outside of the case 1. The other surface of the plate-like member 9 is fixed to the inner surface of the side wall portion 1b of the case 1 with an adhesive. By fixing the protruding portion 1c and the engaging portion 9c to be engaged with each other, the plate-like member 9 is disposed at a position close to one side (X2 direction side) of the case 1. By arranging the plate-like member 9 in this way, the magnetic detection member 6 is arranged so that the detection surface 6 a faces the inner side of the case 1. In addition, the pair of driving magnets 3 has one pair of corners 1a (a pair of corners where the plate-like member 9 is not disposed) positioned diagonally to the housing 40 (case 1) across the optical axis LS. 1a) is arranged one by one and fixed with an adhesive. That is, the plurality of drive magnets 3 are fixed to the fixed side member 50. At this time, the drive magnet 3 is disposed in the housing 40 so that the side surfaces including the trapezoidal legs formed by the drive magnet 3 are along the inner surface of the side wall portion 1b when viewed from the Z2 direction. The spacer 13 is in contact with the positioning protrusion 13a (see FIG. 17).

  As described above, the lens holding member 2 holds the coil 4, the detection magnet 5, and the balancer 7 and is integrally formed. As shown in FIG. 19, the lower leaf spring 11 is caulked with the lower leaf spring holding projection 2m after the lower leaf spring holding projection 2m of the lens holding member 2 is inserted into the first lower fixing hole 11e. Thus, the lower first portion 11c (first portion 60b) is fixed to the lower portion of the lens holding member 2 (lower leaf spring holding portion 2k, see FIG. 11). Further, the coil winding portion 2n of the lens holding member 2 around which the end portion 4b of the coil 4 is wound is disposed next to the lower attachment portion 11d of the lower leaf spring 11 as shown in FIG. Thus, the lower attachment portion 11d and the coil 4 are electrically connected and fixed.

  As shown in FIG. 21, the lens holding member 2 integrated with the lower leaf spring 11 is placed on the base member 8 so that the lower leaf spring 11 and the lower leaf spring arrangement portion 8f of the base member 8 face each other. Arranged in layers. At this time, as shown in FIG. 22, the lower leaf spring 11 has the lower leaf spring fixing projection 8g inserted into the second lower fixing hole 11g, and the first connection portion 8s (see FIG. 6) and the second connection. It arrange | positions so that the welding part 11h may contact on the part 8v (refer FIG. 6), respectively. In the lower leaf spring 11 arranged in this way, the lower second spring portion 11f (second portion 60c) is fixed to the base member 8 (fixed side member 50) by caulking the lower leaf spring fixing protrusion 8g. As a result, the lower leaf spring 11 supports the lens holding member 2 movably in the optical axis direction DR1 (Z1-Z2 direction) at the lower portion within a range in which the lower elastic arm portion 11k can be elastically deformed. Also, the welded portion 11h is fixed to the first connecting portion 8s and the second connecting portion 8v by welding WE, and the first connecting portion 8s, the second connecting portion 8v and the welded portion 11h (strictly, around the welded portion 11h). The lower second portion 11f) is electrically connected. In this way, the first connection portion 8s and the second connection portion 8v are electrically connected to the welding portion 11h, so that the first power supply terminal 8r and the second power supply terminal are connected via the lower leaf spring 11 and the coil 4. 8t is electrically connected. Further, the protruding portion 2e of the lens holding member 2 is disposed in the restriction recess 8k (between the restriction walls 8h) of the base member 8, and the lens holding member 2 is elastically deformed by the lower elastic arm portion 11k of the lower leaf spring 11. Even when it moves in the optical axis direction DR1 as much as possible, it does not deviate from the restriction recess 8k.

  As shown in FIG. 23, the case 1 in which the drive magnet 3, the magnetic detection member 6, the plate-like member 9, the upper leaf spring 10, and the spacer 13 are integrally formed has a lens holding member 2, a coil 4, and a detection magnet. 5, the balancer 7 and the lower leaf spring 11 are arranged so as to overlap with the integrally formed base member 8. At this time, the case 1 is disposed in a state where the plate-like member 9 is erected on the notch portion 8 d, and the lens holding member 2 is accommodated in the housing 40 including the case 1 and the base member 8. Placed. The corners 1a of the case 1 arranged in this way are respectively arranged on the fixing plate 8q of the base member 8, the corners 1a and the fixing plate 8q are fixed by welding, and the case 1 is interposed via the fixing plate 8q. It is connected to the grounding terminal 8b and can be grounded. At this time, the upper first portion 10a (see FIG. 15) of the upper leaf spring 10 is arranged so as to contact the upper leaf spring arrangement portion 2b (see FIG. 10) of the lens holding member 2, and the lens holding member. The upper first portion 10a (first portion 60b) is fixed to the upper leaf spring arrangement portion 2b by an adhesive so as to support 2 at the top. Thereby, the urging member 60 composed of the upper leaf spring 10 and the lower leaf spring 11 supports the lens holding member 2 so as to be movable in the optical axis direction DR1. Further, as shown in FIG. 24, the paste-like damper material 12 is exposed from the opening 1d of the case 1, and the upper extending portion 10k (extending portion 60e, upper connecting portion 10m), the lens holding member 2, and The upper extending portion 10k (extending portion 60e, upper connecting portion 10m) and the upper second portion 10b (second portion 60c) are applied and provided. In addition, the damper material 12 that connects between the upper extending portion 10k and the lens holding member 2 and the damper material 12 that connects between the upper extending portion 10k and the upper second portion 10b are part of the upper wide portion 10n ( It is continuously provided in a state of being placed on the wide portion 60h). The damper material 12 continuously provided in a state of being placed on the upper wide portion 10n is partially inside the upper through hole 10p (through hole 60k, see FIG. 15) provided in the upper wide portion 10n. Is provided to intrude. By irradiating the paste-like damper material 12 exposed from the opening 1d of the case 1 with ultraviolet rays from the opening 1d of the case 1, the damper material 12 changes to a gel shape. In addition, the damper material 12 is provided in the position which opposes on both sides of the center part of the lens holding member 2 so that it may make a pair. In this way, the lens driving device 100 is formed.

  As shown in FIG. 23, the lens driving device 100 formed in this way includes a housing 40 composed of the case 1 and the base member 8, and a fixed-side member 50 composed of the housing 40 and the spacer 13 (see FIG. 3). Is formed. Further, on the side end 8c side of the base member 8, the external terminal 9a is located on one side (X2 direction side) of the side end 8c, and the power supply terminal 8a and the ground terminal 8b are located on the other side (X1 direction side). The power supply terminal 8a, the ground terminal 8b, and the external terminal 9a are arranged in a line at equal intervals.

  Further, as described above, one drive magnet 3 disposed inside the housing 40 is provided for each of the pair of corner portions 1a located on the opposite side of the housing 40 (case 1) with the optical axis LS interposed therebetween. 25. As shown in FIG. 25, each of them is disposed at a position facing the coil 4, and in the first embodiment, the drive mechanism 70 having the drive magnet 3 and the coil 4 is provided. Composed. The driving mechanism 70 can move the lens holding member 2 around which the coil 4 is wound around the outer periphery along the optical axis direction DR1 by an electromagnetic force generated by passing a current through the coil 4.

  Further, as described above, the detection magnet 5 and the balancer 7 are arranged on one side of the lens holding member 2 facing each other across the optical axis LS and the balancer 7 on the other side. Are arranged at positions corresponding to the other pair of corner portions 1a (corner portions 1a where the driving magnet 3 is not disposed) located at the opposite corners of the housing 40 (case 1). The position corresponding to the corner 1a is a position facing the corner 1a.

  The plate-like member 9 on which the magnetic detection member 6 is mounted is disposed so as to stand on the side of the lens holding member 2 (Y2 direction side), and the magnetic detection member 6 mounted on the plate-like member 9 is It is arranged on the side of the lens holding member 2 (Y2 direction side) and is provided to face the detection magnet 5 fixed to the lens holding member 2. The position detection means 80 is configured to include the detection magnet 5 and the magnetic detection member 6 arranged as described above. The position detection means 80 detects the magnetic field generated by the detection magnet 5 that can move along the optical axis direction DR1 (Z1-Z2 direction) integrally with the lens holding member 2, and the magnetic detection member 6 detects the magnetic field of the detection magnet 5. The position of the lens holding member 2 in the optical axis direction DR1 can be detected by calculating from the change in the magnetic field detected by the magnetic detection member 6 along with the movement along the optical axis direction DR1.

  Next, the operation of the lens driving device 100 will be described. The lens driving device 100 can supply a current to the coil 4 by supplying power from the power supply terminal 8a. Further, the direction of the current flowing through the coil 4 can be switched by a control unit provided outside. Assuming that the coil 4 is not energized as the initial state, in the lens driving device 100 in the initial state, the lens holding member 2 is a position where the elastic force of the upper leaf spring 10 and the elastic force of the lower leaf spring 11 are balanced. Is arranged. When a current is passed through the coil 4 via the first power supply terminal 8r and the second power supply terminal 8t, the coil 4 is arranged in the magnetic field generated by the driving magnet 3, and thus a Lorentz force acts on the coil 4. . Since the coil 4 is wound along the outer periphery of the cylindrical portion 2a of the lens holding member 2, a current flows along the outer periphery of the cylindrical portion 2a. Further, since the magnetic field generated by the drive magnet 3 is formed so as to intersect the coil 4, the Lorentz force acts in any direction of the optical axis direction DR1, that is, the Z1 direction or the Z2 direction shown in FIG. Therefore, the drive mechanism 70 can move the lens holding member 2 formed integrally with the coil 4 along the optical axis direction DR1 against the elastic force of the biasing member 60. In addition, the direction of movement of the lens holding member 2 can be changed by reversing the direction of the current flowing through the coil 4. Therefore, the captured image can be focused by moving the lens holding member 2 to which the lens body LE (see FIG. 10) is attached along the optical axis direction DR1. Further, the position detection unit 80 can detect the position of the lens holding member 2 in the optical axis direction DR1 by detecting the change of the magnetic field generated by the detection magnet 5 with the magnetic detection member 6. The position information of the lens holding member 2 detected by the position detection means 80 is fed back to a control unit provided outside. For example, when the position detecting unit 80 detects that the lens holding member 2 has been moved further to the Z1 direction side than the predetermined position in an attempt to move the lens holding member 2 to a predetermined position that is a predetermined distance away from the initial state in the Z1 direction. The control unit that receives feedback from the position detection unit 80 switches the direction of the current flowing through the coil 4 to the reverse direction and positively applies the Lorentz force in a direction to return the lens holding member 2 to a predetermined position. Can be added to.

  Hereinafter, the effect by having set it as 1st Embodiment is demonstrated.

  The lens driving device 100 according to the first embodiment includes a cylindrical lens holding member 2 that can hold the lens body LE, a biasing member 60 that supports the lens holding member 2 so as to be movable in the optical axis direction DR1, and a biasing force. A fixed member 50 that fixes a part of the member 60; and a drive mechanism 70 that includes at least the drive magnet 3 and the coil 4 that move the lens holding member 2 along the optical axis direction DR1. The biasing member 60 includes an upper leaf spring 10 fixed to the upper portion of the lens holding member 2 and a lower leaf spring 11 fixed to the lower portion, and at least one of the upper leaf spring 10 and the lower leaf spring 11. The leaf spring 60a is provided between the first portion 60b fixed to the lens holding member 2, the second portion 60c fixed to the fixed side member 50, and the elasticity provided between the first portion 60b and the second portion 60c. Arm 60d and In the lens driving device, the one leaf spring 60a has an extending portion 60e extending from the middle of the elastic arm portion 60d, and between the extending portion 60e and the lens holding member 2 or the first portion 60b. The damper material 12 is provided so as to connect at least one of the extended portion 60e and the fixed side member 50 or the second portion 60c.

  Accordingly, the damper material 12 is disposed between the extension portion 60e of the leaf spring and the first portion 60b of the lens holding member 2 or the leaf spring 60a (biasing member 60), and between the extension portion 60e and the fixed side member 50 or the first member 60b. Since it is provided between at least one of the two portions 60c, when the lens holding member 2 moves in the optical axis direction DR1 by energizing the coil 4, it is possible to suppress the movement. It is possible to shorten the time required to settle at a predetermined position. Further, when the lens holding member 2 moves in the optical axis direction DR1, an intermediate portion of the elastic arm portion 60d provided between the first portion 60b and the second portion 60c of the leaf spring 60a is also in the lens holding member 2. It moves to some extent in the same direction. For this reason, when the damper material 12 is provided between the extending portion 60e extending from the middle of the elastic arm portion 60d of the leaf spring 60a and the first portion 60b of the lens holding member 2 or the leaf spring 60a, Since the damper material 12 can be prevented from being greatly deformed along with the movement of the lens holding member 2, it is possible to make the damper material 12 unlikely to be broken or dropped. Similarly, when the damper material 12 is provided between the extending portion 60e of the elastic arm portion 60d of the leaf spring 60a and the second portion 60c of the fixed side member 50 or the leaf spring 60a, the lens holding member 2 is also provided. Since it can suppress that the damper material 12 deform | transforms greatly with a movement, it becomes possible to make the damper material 12 hard to generate | occur | produce the damage. Further, although the movement of the lens holding member 2 is controlled by the position detection means 80, when the lens holding member 2 passes a predetermined position to be moved, the damper material 12 is moved to the predetermined position. Generates an elastic force in the direction to return Further, when undesired vibration occurs, the damper material 12 has an effect of suppressing the vibration. Further, the damper material 12 includes a portion between the elastic arm portion 60d of the leaf spring 60a and the lens holding member 2 or the first portion 60b of the leaf spring, and the extension portion 60e and the fixed side member 50 or the second portion 60c. Therefore, even when the damper material 12 is made of gel-like resin, the middle part of the elastic arm portion 60d is also moved in the same direction to some extent as the lens holding member 2 moves in the optical axis direction DR1. Because of the movement, the gel-like damper material 12 is difficult to cut, and the damper function can be secured.

  In the lens driving device 100 according to the first embodiment, a plurality of elastic arm portions 60d are provided between the first portion 60b and the second portion 60c, and the extending portions 60e are adjacent elastic arm portions 60d. It consists of the connection part 60f which connected mutually, It is characterized by the above-mentioned.

  Thereby, since the extending part 60e is made into the connection part 60f which connects adjacent elastic arm parts 60d, the area | region which can provide the damper material 12 becomes wide, and it becomes easy to provide the damper material 12. FIG. Further, since the elastic arm portions 60d are connected to each other, they can be supported by the adjacent elastic arm portions 60d, and the rigidity in the direction (horizontal direction) intersecting the optical axis direction DR1 of the lens holding member 2 can be increased. The posture of the lens holding member 2 can be stabilized.

  The lens driving device 100 according to the first embodiment is easy to apply because the damper material 12 is made of an ultraviolet curable gel resin.

  In the lens driving device 100 according to the first embodiment, the elastic arm portion 60d has at least one bent portion 60g, and the bent portions 60g of the adjacent elastic arm portions 60d are connected to each other by the connecting portion 60f. It is characterized by that.

  Accordingly, the bent portion 60g with a small amount of deformation in the optical axis direction DR1 is connected to the connecting portion 60f, and the connecting portion 60f rarely restricts the movement of the elastic arm portion 60d in the optical axis direction DR1. The function as the force member 60 can be ensured. Further, since the bent portions 60g having a small amount of deformation in the optical axis direction DR1 are connected by the connecting portion 60f, it is difficult to make a difference in the position of the adjacent bent portions 60g in the optical axis direction DR1, and the lens holding member 2 is It is hard to tilt.

  Further, the lens driving device 100 according to the first embodiment is characterized in that one leaf spring 60 a is the upper leaf spring 10.

  Thereby, since one leaf | plate spring 60a is not hidden by the lens holding member 2, it becomes possible to provide the damper material 12 even after incorporating.

  In the lens driving device 100 according to the first embodiment, the lens holding member 2 is accommodated in the case 1 having the opening 1d, the damper material 12 is made of an ultraviolet curable gel resin, and the opening of the case 1 is used. It is exposed from 1d.

  Thereby, after the assembly, the damper material 12 (gel-like resin) can be applied from the opening 1d, and the damper material 12 can be irradiated with ultraviolet rays, thereby facilitating the assembly.

  Further, in the lens driving device 100 according to the first embodiment, the damper material 12 is provided so as to connect the connecting portion 60f and the lens holding member 2 or the first portion 60b, and the connecting portion 60f and the fixed side member are provided. 50 or the second portion 60c is provided with the damper material 12 so as to be connected.

  Thereby, both between the connection part 60f and the 1st part 60b of the lens holding member 2 or the leaf | plate spring 60a (biasing member 60), and between the connection part 60f and the fixed side member 50 or the 2nd part 60c. By providing the damper material 12 to the coil 4, it is possible to shorten the time until the lens holding member 2 settles at a predetermined position by energizing the coil 4.

  Further, in the lens driving device 100 according to the first embodiment, the connecting portion 60f has a wide portion 60h formed wider than other portions of the connecting portion 60f, and the connecting portion 60f and the lens holding member 2 or The damper material 12 provided between the first portion 60b and the damper material 12 provided between the connecting portion 60f and the fixed-side member 50 or the second portion 60c are partially mounted on the wide portion 60h. It is characterized by being provided continuously in a placed state.

  Thereby, since both the damper materials 12 can be provided in the same process, workability | operativity is good. Moreover, since the damper material 12 is provided in the wide part 60h, the contact area of the damper material 12 and the connection part 60f can be increased, and the damper material 12 can be reliably hold | maintained to a required part. In addition, when the through-hole 60k covered with the damper material 12 is formed in the wide part 60h, the contact area of the damper material 12 and the connection part 60f can be increased more.

  Further, the lens driving device 100 according to the first embodiment is characterized in that the damper material 12 is provided at a position facing the center portion of the lens holding member 2 so as to form a pair.

  Accordingly, the damper material 12 can be disposed in a well-balanced manner with respect to the lens holding member 2 by providing the damper material 12 at a position facing the center portion of the lens holding member 2 so as to form a pair. The lens holding member 2 becomes difficult to tilt.

  In addition, the lens driving device 100 according to the first embodiment includes a fixed-side member 50 including a housing 40, a cylindrical lens holding member 2 that is housed in the housing 40 and can hold the lens body LE, and a lens holding member. A driving mechanism 70 configured to include an urging member 60 that movably supports 2 in the optical axis direction DR1, and a driving magnet 3 and a coil 4 that move the lens holding member 2 along the optical axis direction DR1. Are provided with position detection means 80 for detecting the position of the lens holding member 2 in the optical axis direction DR1, and the position detection means 80 includes the detection magnet 5 fixed to the lens holding member 2 and The coil 4 is wound around the outer periphery of the lens holding member 2, and the plurality of driving magnets 3 are fixed side members 50. Hard It is characterized in that.

  Thus, by providing the position detection means 80 for detecting the position of the lens holding member 2 in the optical axis direction DR1, a predetermined position such as a position where the lens holding member 2 is focused while correcting the position of the lens holding member 2 is determined. It can be moved to the position. Therefore, it is possible to shorten the time until the position of the lens holding member 2 is determined, and it is possible to provide a lens driving device that can cope with an increase in autofocus speed.

  Further, since the detection magnet 5 only needs to be large enough to generate a magnetic field that can be detected by the magnetic detection member 6, the detection magnet 5 can be made as small and light as possible, and thus the weight applied to the lens holding member 2. Can be suppressed. Therefore, it is easy to correct the position of the moving lens holding member 2. Further, since the weight applied to the lens holding member 2 can be suppressed, less current flows through the coil 4 in order to drive the lens holding member 2. That is, it is possible to provide a driving device that requires less power to drive the lens holding member 2 and can cope with power saving.

  In the lens driving device 100 according to the first embodiment, in the lens holding member 2, the detection magnet 5 is arranged on one side of the position facing the optical axis LS and the balancer 7 is arranged on the other side. The balancer 7 has the same weight as the detection magnet 5.

  Thus, by arranging the detection magnet 5 on one side of the lens holding member 2 facing the optical axis LS and arranging the balancer 7 having the same weight as the detection magnet 5 on the other side, It is possible to balance the weight on both sides of the optical axis LS. Therefore, the posture of the lens holding member 2 is stable, and the lens holding member 2 is difficult to tilt when moving or changing the moving direction. Therefore, it is possible to provide a lens driving device that can more reliably cope with higher speed autofocus.

  In the lens driving device 100 according to the first embodiment, the total weight of the coil 4, the detection magnet 5, and the balancer 7 is greater than the total weight of the plurality of drive magnets 3. It is light.

  Accordingly, the weight applied to the lens holding member 2 can be reduced as compared with the case where the driving magnet 3 is mounted on the lens holding member 2. Therefore, it is possible to reduce the electric power necessary for driving the lens holding member 2 to facilitate power saving.

  Further, in the lens driving device 100 according to the first embodiment, the housing 40 is formed in a rectangular parallelepiped shape, and the driving magnet 3 is one pair of corners located on the diagonal of the housing 40 with the optical axis LS interposed therebetween. The lens holding member 2 holds the detection magnet 5 on one side at a position corresponding to the other pair of corners 1a of the housing 40, and is disposed on the other pair of corners 1a. The balancer 7 is held on the other side at the corresponding position.

  Thereby, since the housing 40 is formed in a rectangular parallelepiped shape, a space is easily formed in the vicinity of the corner 1a inside the housing 40. By arranging the component parts in such a space, the component parts can be efficiently arranged in the limited space, so that the enlargement of the lens driving device can be suppressed.

  The lens driving device 100 according to the first embodiment is characterized in that the balancer 7 is formed in the same shape as the detection magnet 5 and is made of a magnet magnetized in the same manner as the detection magnet 5. .

  As a result, the detection magnet 5 and the drive magnet 3 magnetically affect each other. By making the balancer 7 the same as the detection magnet 5, it is possible to balance the weights on both sides of the optical axis LS and to achieve a magnetic balance. Therefore, the posture of the lens holding member 2 is further stabilized, and the lens holding member 2 is more difficult to tilt when moving or changing the moving direction. Therefore, it is possible to provide a lens driving device that can cope with higher speed autofocus more reliably.

  The lens driving device 100 according to the first embodiment is characterized in that the magnetic detection member 6 is disposed on the side of the lens holding member 2.

  Thus, the height dimension can be reduced by arranging the magnetic detection member 6 on the side of the lens holding member 2. In addition, some portable devices are required to be thin and have a low profile. Therefore, it is possible to provide a lens driving device that is thin and can cope with high-speed autofocus.

  Further, in the lens driving device 100 according to the first embodiment, the casing 40 has a base 1 provided with a case 1 having a side wall 1b and a power supply terminal 8a that is integrated with the case 1 and energizes the coil 4. And a plate-like member 9 having a plurality of external terminals 9a on which the magnetic detection member 6 is mounted and electrically connected to the magnetic detection member 6, and the external terminals 9a are disposed outside the case 1. The power supply terminal 8a and the external terminal 9a are arranged in a line along the inner surface of the side wall portion 1b in a state where the power supply terminal 8a and the external terminal 9a are arranged. .

  Thereby, the magnetic detection part can be easily arrange | positioned to the side of the lens holding member 2 by arrange | positioning the plate-shaped member 9 which mounted the magnetic detection member 6 in the housing 40. FIG. In addition, since the power supply terminals 8a and the external terminals 9a are arranged in a straight line, the layout of the mounting substrate on which the lens driving device is mounted becomes easy. Therefore, it is possible to provide a lens driving device that is simple in configuration and easy to mount.

  In the lens driving device 100 according to the first embodiment, the biasing member 60 includes an upper leaf spring 10 that supports the lens holding member 2 at the upper portion and a lower leaf spring 11 that supports the lens holding member 2 at the lower portion. Thus, the upper leaf spring 10 and the lower leaf spring 11 have elasticity, and when the coil 4 is not energized, the lens holding member 2 has an elastic force of the upper leaf spring 10 and an elastic force of the lower leaf spring 11. It is arranged at the position where it was suspended.

  As a result, when the coil 4 is not energized, the lens holding member 2 is in a neutral position where the upper leaf spring 10 and the lower spring are suspended, so that the lens holding member 2 moves downward in the optical axis direction DR1. In the case of biasing, it is necessary to lift the lens holding member 2 against the biasing force of the leaf spring, but this is not necessary, so it is necessary when driving the lens holding member from a stopped state. It is possible to provide a lens driving device that requires less power and saves power.

  Further, in the lens driving device 100 according to the first embodiment, the protruding portion 2e of the lens holding member 2 is disposed in the regulating recess 8k of the base member 8, and the protruding portion 2e is guided in the regulating recess 8k. It was set as the structure which moves along DR1. Accordingly, it is possible to prevent the lens holding member 2 from rotating and the urging member 60 from being deformed or damaged when the lens body LE is attached or when the lens driving device 100 is accidentally dropped. .

  In addition, the lens driving device 100 according to the first embodiment includes a housing 40, a cylindrical lens holding member 2 that can be held in the housing 40 and can hold the lens body LE, and the lens holding member 2 in the optical axis direction DR1. A lens drive comprising: an urging member 60 that is movably supported; and a drive mechanism 70 that includes a drive magnet 3 and a coil 4 that move the lens holding member 2 along the optical axis direction DR1. The apparatus includes position detection means 80 for detecting the position of the lens holding member 2 in the optical axis direction DR1. The position detection means 80 is opposed to the detection magnet 5 and the detection magnet 5 fixed to the lens holding member 2. The plate-like member 9 is provided with a plurality of conductive members 9b that are mounted on the magnetic detection member 6 and are electrically connected to the magnetic detection member 6. It is arranged such that upright at the side of the timber 2, characterized in that.

  Thus, by providing the position detection means 80 for detecting the position of the lens holding member 2 in the optical axis direction DR1, a predetermined position such as a position where the lens holding member 2 is focused while correcting the position of the lens holding member 2 is determined. It can be moved to the position. Therefore, the time until the position of the lens holding member 2 is determined can be shortened. In addition, the magnetic detection member 6 can be easily arranged to face the detection magnet 5 by the plate-like member 9, and the plate-like member 9 is disposed on the side of the lens holding member 2. In comparison with the case where the magnetic detection member 6 and the plate-like member 9 are arranged below the lens holding member 2, it is possible to suppress an increase in the height dimension (dimension in the optical axis direction DR 1) of the lens driving device. Can do.

  In the lens driving device 100 according to the first embodiment, the housing 40 includes the case 1 having the side wall portion 1b and the base member 8 integrated with the case 1, and the conductive member 9b is a plate-like member. 9 is composed of a metal member embedded in 9, and a part thereof is exposed from the plate-like member 9 to constitute an external terminal 9 a.

  As a result, the conductive member 9b is made of a metal member embedded in the plate-like member 9, and part of the conductive member 9b protrudes from the plate-like member 9 to constitute the external terminal 9a. A wiring pattern such as a substrate on which the apparatus is mounted can be easily electrically connected via the external terminal 9a without using a connector or a lead wire.

  In the lens driving device 100 according to the first embodiment, the base member 8 is provided with a plurality of power supply terminals 8a for supplying current to the coil 4, and the external terminals 9a and the power supply terminals 8a are arranged in a line. It is characterized by being lined up.

  Thereby, since the external terminals 9a and the power supply terminals 8a are arranged in a line, the layout of a wiring pattern such as a mounting board on which the lens driving device is mounted is facilitated.

  In the lens driving device 100 according to the first embodiment, the case 1 is formed of a metal plate, and the base member 8 is provided with a grounding terminal 8b for grounding the case 1, and the external terminal 9a. The power supply terminal 8a and the ground terminal 8b are arranged in a line.

  Thereby, the layout of the wiring pattern such as the mounting substrate on which the lens driving device is mounted becomes easier. Further, when the external terminal 9a, the power supply terminal 8a, and the grounding terminal 8b are arranged in a line, it is not necessary to provide a mounting board in a portion where these terminals do not exist, so the mounting board is reduced in size. It is also possible.

  Further, in the lens driving device 100 according to the first embodiment, the side end 8c of the base member 8 is formed with a notch 8d that can be arranged in a state where the plate-like member 9 is erected, and the side end The power supply terminal 8a is arranged in a portion of the portion 8c where the notch 8d is not provided.

  Thereby, the external terminal 9a and the power feeding terminal 8a can be easily arranged in a line.

  In the lens driving device 100 according to the first embodiment, the magnetic detection member 6 is fixed to one surface side of the plate-like member 9, and the other surface of the plate-like member 9 is bonded to the inner surface of the side wall portion 1 b of the case 1. It is fixed by the agent.

  Thereby, since it can adhere | attach on a wide area, the plate-shaped member 9 can be maintained in the state stood reliably.

  Further, in the lens driving device 100 according to the first embodiment, an engaging portion 9 c formed in a groove shape is provided on the other surface side of the plate-like member 9, and the side wall portion 1 b of the case 1 has A protruding portion 1c protruding downward is formed, and the protruding portion 1c and the engaging portion 9c are engaged with each other.

  Accordingly, the case 1 can be positioned with a simple configuration in which the protruding portion 1c is inserted into the engaging portion 9c.

  As described above, the lens driving device according to the embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. It is possible. For example, the present invention can be modified as follows, and these embodiments also belong to the technical scope of the present invention.

  In the first embodiment, the damper material 12 is provided so as to connect between the connecting portion 60f and the lens holding member 2, and the damper material 12 is provided so as to connect between the connecting portion 60f and the second portion 60c. It was set as the structure provided. However, the damper is provided so as to connect at least one of the extension portion 60e and the lens holding member 2 or the first portion 60b and between the extension portion 60e and the fixed side member 50 or the second portion 60c. The structure in which the material 12 is provided may be sufficient. For example, as shown in FIG. 26A, the damper material 12 is provided only between the connecting portion 60f and the fixed-side member 50 (spacer 13), or as shown in FIG. The damper material 12 may be provided only between the connecting portion 60f and the first portion 60b. FIG. 26 is a view showing a modification of the arrangement configuration of the damper member 12 in the first embodiment. FIG. 26A shows the damper member 12 provided only between the connecting portion 60f and the fixed-side member 50. FIG. 26B is a schematic diagram showing a modification in which the damper material 12 is provided only between the connecting portion 60f and the first portion 60b. In FIG. 26, some components are not shown for ease of explanation. Further, the upper leaf spring 10 shown in FIG. 26B is different in structure from the upper leaf spring 10 in the first embodiment, but uses the same part name and symbol.

  In the first embodiment, one leaf spring 60a having the extending portion 60e extending from the middle of the elastic arm portion 60d is the upper leaf spring 10, but the lower leaf spring 11 may be used. Alternatively, a structure in which the extending portion 60e is provided on both the lower leaf spring 11 may be employed.

  In the first embodiment, the case 1 is made of a non-magnetic metal plate, and the drive mechanism 70 is configured to include the drive magnet 3 and the coil 4. However, the case 1 is made of a magnetic metal plate. While being formed, the drive mechanism 70 may include the case 1, the drive magnet 3, and the coil 4.

  In the first embodiment, the damper material 12 is made of an ultraviolet curable gel resin, but may not be ultraviolet curable.

  In the first embodiment, the upper plate spring 10 is fixed to the fixed side member 50 and the lens holding member 2 by adhesion, but may be fixed by caulking.

  In the first embodiment, the position detecting unit 80 capable of detecting the position of the lens holding member 2 in the optical axis direction has been described. However, the lens holding member 2 may not include the position detecting unit.

DESCRIPTION OF SYMBOLS 1 Case 1a Corner | angular part 1b Side wall part 1c Projection part 1d Opening part 1e Top surface part 2 Lens holding member 2a Cylindrical part 2b Upper leaf | plate spring arrangement part 2c Lower side collar part 2d Upper collar part 2e Projection part 2f Magnet holding part 2g Balancer holding Part 2h Coil holding part 2k Lower leaf spring holding part 2m Lower leaf spring holding protrusion 2n Coil winding part 3 Driving magnet 4 Coil 4a Winding part 4b End part 5 Detection magnet 6 Magnetic detection member 6a Detection surface 6b Terminal part 7 Balancer 8 Base member 8a Power supply terminal 8b Grounding terminal 8c Side end 8d Notch 8e Pedestal 8f Lower leaf spring arrangement portion 8g Lower leaf spring fixing projection 8h Restriction wall 8k Restriction recess 8m Metal member 8n First metal member 8p 2nd metal member 8q Fixed plate 8r 1st electric power feeding terminal 8s 1st connection part 8t 2nd electric power feeding terminal 8v 2nd connection part 9 Plate-shaped member 9 External terminal 9b Conductive member 9c Engagement part 9d Base part 9e Step part 10 Upper leaf spring 10a Upper first part 10b Upper second part 10c Upper elastic arm part 10d Upper first arm 10e Upper first bent part 10f Upper second Arm 10g Upper second bent portion 10h Upper third arm 10k Upper extended portion 10m Upper connecting portion 10n Upper wide portion 10p Upper through hole 11 Lower leaf spring 11a First lower leaf spring 11b Second lower leaf spring 11c Lower first Portion 11d Lower mounting portion 11e First lower fixing hole 11f Lower second portion 11g Second lower fixing hole 11h Welded portion 11k Lower elastic arm portion 11m Lower first arm 11n Lower first bent portion 11p Lower Side second arm 11q Lower second bent portion 11r Lower third arm 11s Lower connecting portion 12 Damper material 13 Spacer 13a Positioning protrusion 40 Housing 50 Fixed side portion 60 urging member 60a one leaf spring 60b first part 60c second part 60d elastic arm part 60e extension part 60f connecting part 60g bent part 60h wide part 60k through hole 70 driving mechanism 80 position detecting means 100 lens driving device DR1 light Axial LE Lens body LS Optical axis SO Solder WE Welding

Claims (8)

A cylindrical lens holding member capable of holding a lens body;
An urging member that supports the lens holding member so as to be movable in the optical axis direction;
A fixed side member for fixing a part of the biasing member;
A drive mechanism comprising at least a drive magnet and a coil for moving the lens holding member along the optical axis direction;
With
The biasing member includes an upper leaf spring fixed to the upper portion of the lens holding member, and a lower leaf spring fixed to the lower portion, and at least one leaf spring of the upper leaf spring and the lower leaf spring is A lens having a first portion fixed to the lens holding member, a second portion fixed to the fixed side member, and an elastic arm portion provided between the first portion and the second portion. In the drive device,
The one leaf spring has an extending part extending from the middle of the elastic arm part,
A damper material is connected between at least one of the extension part and the lens holding member or the first part and between the extension part and the fixed side member or the second part. A lens driving device provided.   A plurality of the elastic arm portions are provided between the first portion and the second portion, and the extending portion is composed of a connecting portion that connects the adjacent elastic arm portions. The lens driving device according to claim 1.   The lens driving device according to claim 2, wherein the elastic arm portion has at least one bent portion, and the bent portions of the adjacent elastic arm portions are connected to each other by the connecting portion. .   The lens driving device according to claim 2, wherein the one leaf spring is an upper leaf spring. The lens holding member is housed in a case having an opening,
The lens driving device according to claim 4, wherein the damper material is made of an ultraviolet curable gel-like resin and is exposed from the opening of the case.   The damper material is provided so as to connect between the connecting portion and the lens holding member or the first portion, and so as to connect between the connecting portion and the fixed side member or the second portion. The lens driving device according to claim 2, wherein the damper material is provided.   The connecting portion has a wide portion formed wider than other portions of the connecting portion, and the damper material provided between the connecting portion and the lens holding member or the first portion. And the damper material provided between the connecting portion and the fixed-side member or the second portion is continuously provided in a state where a part is placed on the wide portion. The lens driving device according to claim 6. The lens driving device according to any one of claims 1 to 7, wherein the damper material is provided at a position facing each other with a central portion of the lens holding member interposed therebetween so as to form a pair. .