Abstract: Disclosed is a method for producing an annealed and pickled steel sheet in a continuous manner by continuously performing: subjecting a cold-rolled steel sheet to annealing to obtain an annealed steel sheet; subjecting the annealed steel sheet to pickling with a mixed acid solution containing a first acid that is oxidizing and a second acid that is non-oxidizing, by feeding the annealed steel sheet into a mixed acid tank holding the mixed acid solution; and subjecting the annealed steel sheet discharged from the mixed acid tank to repickling with an acid solution containing a third acid that is non-oxidizing. Fe concentration in the mixed acid solution in the mixed acid tank is measured, and a lower limit of ferrite fraction in a surface layer of the annealed steel sheet to be subjected to the pickling is set according to the Fe concentration measured.

Abstract: There is provided a ball screw mechanism for which a return of a sphere, such as a conventional circulating ball screw, need not to be considered, and that can prevent vibration and noise and avoid an increase in heat by ensuring smooth movement of a sphere without causing ball jam or the like of a sphere on a screw shaft. The present invention includes a screw shaft 2 that has a spiral groove 2a and extends linearly, a housing 30 that surrounds a periphery of the screw shaft 2, and a plurality of spheres 4 and ball bearings 5 that transmits thrust of the screw shaft 2 to the housing 30. Each ball bearing 5 includes an outer ring 7 attached and fixed to the housing 30 at regular intervals along the spiral groove 2a of the screw shaft 2, and an inner ring 6 provided with a concave spherical contact surface 5a in contact with the sphere 4 on a side surface facing the screw shaft 2. Each inner ring 6 is rotatably disposed about rotation axes N1 to N4 orthogonal to a rotation axis O of the screw shaft 2.

Abstract: There is provided a ball screw mechanism for which a return of a sphere, such as a conventional circulating ball screw, need not to be considered, and that can prevent vibration and noise and avoid an increase in heat by ensuring smooth movement of a sphere without causing ball jam or the like of a sphere on a screw shaft. The present invention includes a screw shaft 2 that has a spiral groove 2a and extends linearly, a housing 30 that surrounds a periphery of the screw shaft 2, and a plurality of spheres 4 and ball bearings 5 that transmits thrust of the screw shaft 2 to the housing 30. Each ball bearing 5 includes an outer ring 7 attached and fixed to the housing 30 at regular intervals along the spiral groove 2a of the screw shaft 2, and an inner ring 6 provided with a concave spherical contact surface 5a in contact with the sphere 4 on a side surface facing the screw shaft 2. Each inner ring 6 is rotatably disposed about rotation axes N1 to N4 orthogonal to a rotation axis O of the screw shaft 2.

Abstract: An electronic device of the present disclosure includes a casing, a translucent panel including a curved portion the curved portion being bent toward the casing, and a touch panel located on a rear surface of the translucent panel, the touch panel covering the curved portion, the touch panel including a transparent electrode or a wire electrically connected to the transparent electrode. The touch panel includes a curved region facing the curved portion. The transparent electrode and/or the wire include/includes an inclined wiring portion located in the curved region.

Abstract: An electronic device includes a substrate body serving as a base including a first surface and a second surface facing opposite sides to each other, a dome switch located on the first surface, a waterproof sheet located to include a portion configured to cover the dome switch, and an adhesive layer located on at least part of the waterproof sheet. The waterproof sheet is affixed to the base or another component with the adhesive layer so as to leave a watertight space including the dome switch.

Abstract: An electronic device in which a vibration generator is attached to a panel allows further improvement in sound pressure characteristics. An electronic device (1) includes a housing (60), a panel (10) held by the housing (60), a vibration generator (30) attached to the panel (10), and a sheet member (80) between the housing (60) and the panel (10). The panel (10) deforms due to deformation of the vibration generator (30) to transmit human body vibration sound to an object that contacts the panel (10). A first portion of the sheet member (80) is joined to the panel (10), and a second portion of the sheet member (80) differing from the first portion is joined to the housing (60). Between the first portion and the second portion, the sheet member (80) includes an area to which neither the panel (10) nor the housing (60) is attached.

Abstract: A mobile terminal according to the present disclosure includes a housing member with a first sound hole, a film speaker and a speaker holder with a second sound hole. The film speaker includes a piezoelectric element and a resin film configured to vibrate with the piezoelectric element. The film speaker is located in the speaker holder. The second sound hole corresponds to the first sound hole and is located between the first sound hole and the film speaker. An inner edge which defines the second sound hole extends above the film speaker. A surface of the inner edge facing the film speaker is inclined such that at least a part of the inner edge decreases in thickness toward a leading end of the inner edge.

Abstract: An electronic device according to the present disclosure includes a translucent panel including a front surface and a back surface, the translucent panel including a curved portion at an end portion, the curved portion being curved toward the back surface with respect to a central portion of the translucent panel. The electronic device also includes a touch panel located on the back surface of the translucent panel and configured to be covered with the central portion and the curved portion. The distance between the curved portion and the touch panel is shorter than the distance between the central portion of the translucent panel and the touch panel.

Abstract: An electronic device according to an embodiment of the present disclosure includes a translucent panel and a casing to which the translucent panel is attached. The translucent panel includes a curved portion curved toward the casing. The casing includes an attaching surface facing an end surface of the translucent panel, the end surface facing the casing. A distance between an end of the end surface of the translucent panel and a portion of the attaching surface of the casing facing the end of the end surface is longer than a distance between a middle portion of the end surface of the translucent panel and a portion of the attaching surface of the casing facing the middle portion.

Abstract: An electronic device includes a case, a panel which includes a first surface including a contour line and is held by the case such that the first surface faces outward, the contour line being provided with a first recess, a first component located in the case, and a cover which is provided with a through hole or a cut for communication between the first component and the outside and is located to hide the first recess when the first surface is two-dimensionally viewed.

Abstract: An electronic device according to an embodiment includes a casing and a translucent panel attached to the casing. The translucent panel has a curved portion curved toward the casing. The casing includes an attaching surface and a sidewall. The attaching surface faces an end surface of the translucent panel. The sidewall is located to be raised from the attaching surface toward a back surface of the curved portion, and is inclined from a direction perpendicular to the attaching surface toward a central portion of the translucent panel.

Abstract: An electronic device includes a substrate body serving as a base including a first surface and a second surface facing opposite sides to each other, a dome switch located on the first surface, a waterproof sheet located to include a portion configured to cover the dome switch, and an adhesive layer located on at least part of the waterproof sheet. The waterproof sheet is affixed to the base or another component with the adhesive layer so as to leave a watertight space including the dome switch.

Abstract: Excessive deformation of a piezoelectric element is reduced. An electronic apparatus 1 according to the present invention includes a panel 10, a piezoelectric element 30, a housing 60 for mounting the panel 10, and an intermediate member 80 attached to the piezoelectric element 30, wherein the intermediate member 80 and the panel 10 deform due to deformation of the piezoelectric element 30, thereby delivering an air conduction sound and a human body vibration sound to an object in contact with the panel 10 that is deforming.

Abstract: A mobile terminal according to the present disclosure includes a housing member with a first sound hole, a film speaker and a speaker holder with a second sound hole. The film speaker includes a piezoelectric element and a resin film configured to vibrate with the piezoelectric element. The film speaker is located in the speaker holder. The second sound hole corresponds to the first sound hole and is located between the first sound hole and the film speaker. An inner edge which defines the second sound hole extends above the film speaker. A surface of the inner edge facing the film speaker is inclined such that at least a part of the inner edge decreases in thickness toward a leading end of the inner edge.

Abstract: An electronic device of the present disclosure includes a casing, a translucent panel including a curved portion, the curved portion being bent toward the casing, and a touch panel located on a surface of the translucent panel toward the casing, the touch panel covering the curved portion. The touch panel includes a first transparent substrate facing the translucent panel and a first transparent electrode located on a surface of the transparent substrate toward the casing.

Abstract: An electronic device of the present disclosure includes a casing, a translucent panel including a curved portion the curved portion being bent toward the casing, and a touch panel located on a rear surface of the translucent panel, the touch panel covering the curved portion, the touch panel including a transparent electrode or a wire electrically connected to the transparent electrode. The touch panel includes a curved region facing the curved portion. The transparent electrode and/or the wire include/includes an inclined wiring portion located in the curved region.

Abstract: An electronic device according to the present disclosure includes a translucent panel including a front surface and a back surface, the translucent panel including a curved portion at an end portion, the curved portion being curved toward the back surface with respect to a central portion of the translucent panel. The electronic device also includes a touch panel located on the back surface of the translucent panel and configured to be covered with the central portion and the curved portion. The distance between the curved portion and the touch panel is shorter than the distance between the central portion of the translucent panel and the touch panel.

Abstract: An electronic device in which a vibration generator is attached to a panel allows further improvement in sound pressure characteristics. An electronic device (1) includes a housing (60), a panel (10) held by the housing (60), a vibration generator (30) attached to the panel (10), and a sheet member (80) between the housing (60) and the panel (10). The panel (10) deforms due to deformation of the vibration generator (30) to transmit human body vibration sound to an object that contacts the panel (10). A first portion of the sheet member (80) is joined to the panel (10), and a second portion of the sheet member (80) differing from the first portion is joined to the housing (60). Between the first portion and the second portion, the sheet member (80) includes an area to which neither the panel (10) nor the housing (60) is attached.

Abstract: An electronic device according to an embodiment includes a casing and a translucent panel attached to the casing. The translucent panel has a curved portion curved toward the casing. The casing includes an attaching surface and a sidewall. The attaching surface faces an end surface of the translucent panel. The sidewall is located to be raised from the attaching surface toward a back surface of the curved portion, and is inclined from a direction perpendicular to the attaching surface toward a central portion of the translucent panel.

Abstract: An electronic device according to an embodiment of the present disclosure includes a translucent panel and a casing to which the translucent panel is attached. The translucent panel includes a curved portion curved toward the casing. The casing includes an attaching surface facing an end surface of the translucent panel, the end surface facing the casing. A distance between an end of the end surface of the translucent panel and a portion of the attaching surface of the casing facing the end of the end surface is longer than a distance between a middle portion of the end surface of the translucent panel and a portion of the attaching surface of the casing facing the middle portion.