Abstract: A lens driving device 1 is provided, in which a spring 11 includes an outer ring portion 11b that is fixed to a body 5, an inner ring portion 11a that is fixed to a lens support 7, and an arm portion 11c that connects the outer ring portion 11b and the inner ring portion 11a, and the lens support 7 is moved in an optical axis direction of a lens by way of an electromagnetic force that is generated by applying electric current to a coil 15 from a terminal member 6, the terminal member 6 including a superimposed portion 6a that is superimposed on the outer ring portion of 11b of the spring 11, and a power supply terminal 6b that protrudes from the superimposed portion 6a, and the terminal member 6 disposing the superimposed portion 6a between the outer ring portion 11b of the spring and the body 5.

Abstract: In a lens driving device of the present invention, each magnet is provide to face an outer circumferential face of a first coil, and face a second coil at a position at which the second coil is provided. A first spring member and a second spring member are configured by a plurality of six springs separated from each other, each coil wire end of the first coil and the two of the second coils being connected to a different spring, respectively, and when moving a lens support (5) in the optical axis direction, electric current is flowed through the first coil, and when moving the lens support in an X-Y direction that is orthogonal to the optical axis, a predetermined electric current is flowed through a predetermined one of the second coils.

Abstract: The in-wheel motor of the present invention includes: a cylindrical coil body; a coil body support member fixed to a shaft; an outer yoke that is disposed on an outer circumferential side of the coil body, and is fixed to a wheel disk; a magnet fixed on an inner circumferential face of the outer yoke; an inner yoke that is disposed on an inner circumferential side of the coil body, and is disposed to face the coil body. The outer yoke and the inner yoke are fixed, and are rotatable around the shaft; and a caliper is provided on an inner circumferential side of the inner yoke.

Abstract: In the lens driving device of the present invention, at least two second coils are disposed at a 90 degree interval in a circumferential direction of a first coil wound around an outer circumference of a lens support in the circumferential direction, at least four magnets are provided at an inner circumferential side of a circumferential wall of a yoke and are provided at even intervals about the circumferential direction of the first coil, each magnet being provided so that an inner circumferential face is the same magnetic pole and opposes an outer circumferential face of the first coil, and in addition is opposite the second coil at the position of providing the second coil. When the lens support is moved in the optical axis direction, an electric current flows in the first coil, and when the lens support is moved in an X-Y direction orthogonal to the optical axis, a predetermined electric current flows in a predetermined second coil.

Abstract: In a linear driving device 7, in which a driving shaft 21 vibrates in an axial direction by a vibration member 17, as a result of which a movable body 3 that is frictionally contact with the driving shaft 21 slides along the axial direction of the driving shaft 21, the vibration member 17 includes a piezoelectric element 23 and a vibrator 19 made of a metal plate having elasticity; the vibrator 19 is fixed to the piezoelectric element 23 by superimposing plate faces thereof; the driving shaft 21 has a trunk 25 along which the movable body 3 slides, and an end portion 26 to be fixed to the vibrator 19; a base surface 24 of the end portion 26 abuts with and is fixed to the vibrator 19; and an area of the base surface 24 is smaller than a cross sectional area of the trunk 25.

Abstract: A lens driving device 1 is provided, in which a spring 11 includes an outer ring portion 11b that is fixed to a body 5, an inner ring portion 11a that is fixed to a lens support 7, and an arm portion 11c that connects the outer ring portion 11b and the inner ring portion 11a, and the lens support 7 is moved in an optical axis direction of a lens by way of an electromagnetic force that is generated by applying electric current to a coil 15 from a terminal member 6, the terminal member 6 including a superimposed portion 6a that is superimposed on the outer ring portion of 11b of the spring 11, and a power supply terminal 6b that protrudes from the superimposed portion 6a, and the terminal member 6 disposing the superimposed portion 6a between the outer ring portion 11b of the spring and the body 5.

Abstract: A method for manufacturing a coreless armature, which can prevent a short circuit of adjacent terminal layers when resistance-welding the terminal layers, is provided. In a method for manufacturing a coreless armature, terminals 5 of the conducting bands 3 provided to each coil base 1 are stacked to form a terminal layer 23, a welding rod 21 is pressed against a terminal positioned on an outermost periphery so as to interpose the terminal layer 23 between coil jigs 9a and 9b and the welding rod 21, and an electric current is applied thereto, thereby connecting each terminal 5 of the terminal layer 23 by way of resistance welding, in which an insulating material 25 is arranged between terminal layers 23 adjacent in a circumferential direction to resistance-weld the terminal layers 23.

Abstract: A lens driving device, an autofocus camera and a camera-equipped mobile terminal are provided that can correct movement of a lens in an optical axis direction and tilt of an optical axis, and reduce the dimension thereof in the optical axis direction. The device includes: a lens support 5 for supporting a lens at an inner circumference; a plurality of coils 19a to 19d disposed at regular intervals in a circumferential direction on an outer periphery of the lens support 5; a base 8 that supports the lens support 5 so as to move freely in an optical axis direction of the lens; and a magnet portion 17 provided on the base 8 and facing each of the coils 19a to 19d, in which an electric current of equal current value is applied to each of the coils 19a to 19d when moving the lens support 5 in the optical axis direction, and current values of the electric current applied to predetermined coils 19a to 19d are varied when correcting tilt of the optical axis of the lens.

Abstract: A lens driving apparatus 1 of the present invention includes a substantially cylindrical yoke 3; a base 5 to which the yoke 3 is attached; a carrier 7 having a lens; a coil 10; and a magnet 13, wherein the carrier 7 is moved in a direction of an optical axis of a lens by electromagnetic force generated by passing current through the coil 10, the base 5 is substantially square-shaped as viewed from a plane, the yoke 3 is placed at an inner position of the base 5, the yoke 3 has an outer peripheral wall 3a and an annular inner peripheral wall 3b to be spaced to each other, each magnet is placed between the outer peripheral wall and the inner peripheral wall and at a position corresponding to a base corner portion of the base 5, and a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at a base side portion 3e is made narrower than a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at the base corner portion.

Abstract: A lens driving apparatus 1 of the present invention includes a substantially cylindrical yoke 3; a base 5 to which the yoke 3 is attached; a carrier 7 having a lens; a coil 10; and a magnet 13, wherein the carrier 7 is moved in a direction of an optical axis of a lens by electromagnetic force generated by passing current through the coil 10, the base 5 is substantially square-shaped as viewed from a plane, the yoke 3 is placed at an inner position of the base 5, the yoke 3 has an outer peripheral wall 3a and an annular inner peripheral wall 3b to be spaced to each other, each magnet is placed between the outer peripheral wall and the inner peripheral wall and at a position corresponding to a base corner portion of the base 5, and a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at a base side portion 3e is made narrower than a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at the base corner portion.

Abstract: A lens driving apparatus 1 of the present invention includes a substantially cylindrical yoke 3; a base 5 to which the yoke 3 is attached; a carrier 7 having a lens; a coil 10; and a magnet 13, wherein the carrier 7 is moved in a direction of an optical axis of a lens by electromagnetic force generated by passing current through the coil 10, the base 5 is substantially square-shaped as viewed from a plane, the yoke 3 is placed at an inner position of the base 5, the yoke 3 has an outer peripheral wall 3a and an annular inner peripheral wall 3b to be spaced to each other, each magnet is placed between the outer peripheral wall and the inner peripheral wall and at a position corresponding to a base corner portion of the base 5, and a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at a base side portion 3e is made narrower than a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at the base corner portion.