A sounding device includes a holder, a magnetic circuit unit, and an elastic sheet fixing the magnetic circuit unit to the holder. The magnetic circuit unit includes a yoke, a main magnet fixed to the yoke, at least two auxiliary magnets disposed around two opposite sides of the main magnet, and an upper clamping plate respectively covering and fixed to the auxiliary magnets. One end of the elastic sheet is fixed to the holder, and the other end of the elastic sheet is fixed to the upper clamping plate.

A sounding device includes a holder, a magnetic circuit unit, and an elastic sheet fixing the magnetic circuit unit to the holder. The magnetic circuit unit includes a yoke, a main magnet fixed to the yoke, at least two auxiliary magnets disposed around two opposite sides of the main magnet, and an upper clamping plate respectively covering and fixed to the auxiliary magnets. One end of the elastic sheet is fixed to the holder, and the other end of the elastic sheet is fixed to the upper clamping plate.

A coil assembly for vehicle braking includes a hollow bobbin configured to allow a coil to be wound along an outer circumferential surface thereof, and having at least one engagement protrusion formed on an upper surface and/or a lower surface, a plurality of lead pins coupled with the bobbin to supply current to the coil, a plurality of pin assembly units formed on two side ends of the bobbin to fix the lead pins and connect the lead pins to the coil and a hollow case configured to surround at least a portion of the bobbin, and formed to be bent in the upper and lower portions in a first direction to be attached to the upper and lower surfaces of the bobbin.

A coil assembly for vehicle braking includes a hollow bobbin configured to allow a coil to be wound along an outer circumferential surface thereof, and having at least one engagement protrusion formed on an upper surface and/or a lower surface, a plurality of lead pins coupled with the bobbin to supply current to the coil, a plurality of pin assembly units formed on two side ends of the bobbin to fix the lead pins and connect the lead pins to the coil and a hollow case configured to surround at least a portion of the bobbin, and formed to be bent in the upper and lower portions in a first direction to be attached to the upper and lower surfaces of the bobbin.

A coil assembly for a magnetic actuator is described, the coil assembly comprising: a tubular coil holder (100) comprising a first (110) and second open distal end (120): the first open distal end comprising an outer circular rim (112) and an inner circular rim (114) separated by a circular groove (116): the second open distal end comprising an outer circular rim (122); the tubular coil holder further comprising a central circular rim (130) arranged substantially halfway between the inner circular rim of the first open distal end and the outer circular rim of the second open distal end: a coil (140) formed of a single wire (150) the coil comprising a first coil section (142) arranged in a first winding area (144) between the inner circular rim of the first open distal end and the central circular rim, and a second coil section (146) in a second winding area (148) between the central circular rim and the outer circular rim of the second distal end; the first coil section and the second coil section being wound about the tubular coil holder in opposite directions; whereby a first end (152) and a second end (154) of the single wire are arranged in the circular groove, the inner circular rim comprising a longitudinal groove (114.1) to extend the first aid and the second end of the single wire from the circular groove to the first winding area; the central circular rim composing a longindinal groove (130.1) to extend the single wire form the first winding area to the second winding area and vice versa; an external connection (160) comprising a first conductor (162) and a second conductor (164); whereby an end of the first conductor is electrically connected to the first end of the single wire so as to form a first electrical connection (166) arranged in the circular groove and an end of the second conductor is electrically connected to the second end of the single wire so as to form a second electrical connection (168) in the circular groove and wherein the first and second conductor extend through the outer circular rim via a longitudinal groove (112.1) of the outer circular rim.

A coil assembly for a magnetic actuator is described, the coil assembly comprising: a tubular coil holder (100) comprising a first (110) and second open distal end (120): the first open distal end comprising an outer circular rim (112) and an inner circular rim (114) separated by a circular groove (116): the second open distal end comprising an outer circular rim (122); the tubular coil holder further comprising a central circular rim (130) arranged substantially halfway between the inner circular rim of the first open distal end and the outer circular rim of the second open distal end: a coil (140) formed of a single wire (150) the coil comprising a first coil section (142) arranged in a first winding area (144) between the inner circular rim of the first open distal end and the central circular rim, and a second coil section (146) in a second winding area (148) between the central circular rim and the outer circular rim of the second distal end; the first coil section and the second coil section being wound about the tubular coil holder in opposite directions; whereby a first end (152) and a second end (154) of the single wire are arranged in the circular groove, the inner circular rim comprising a longitudinal groove (114.1) to extend the first aid and the second end of the single wire from the circular groove to the first winding area; the central circular rim composing a longindinal groove (130.1) to extend the single wire form the first winding area to the second winding area and vice versa; an external connection (160) comprising a first conductor (162) and a second conductor (164); whereby an end of the first conductor is electrically connected to the first end of the single wire so as to form a first electrical connection (166) arranged in the circular groove and an end of the second conductor is electrically connected to the second end of the single wire so as to form a second electrical connection (168) in the circular groove and wherein the first and second conductor extend through the outer circular rim via a longitudinal groove (112.1) of the outer circular rim.

The present application relates to a driving structure for an optical actuator including: a first driving part adapted to mounting a camera lens; and a second driving part adapted to mounting a photosensitive assembly, wherein the first driving part and the second driving part have a common magnet, the common magnet is arranged on a first base part or a second base part, the photosensitive assembly includes a photosensitive chip, and the first driving part drives the camera lens to translate in x-axis and y-axis directions by means of the electromagnetic induction of a camera lens driving coil and the common magnet, and the second driving part drives the photosensitive chip to translate in the x-axis and y-axis directions by means of the electromagnetic induction of a photosensitive assembly driving coil and the common magnet; and the camera lens and the photosensitive chip are configured to be driven simultaneously and move in opposite directions. Further provided in the present application is a corresponding camera module. According to the present application, the anti-shake stroke and the anti-shake response speed of the camera module may be improved while keeping the volume of the module relatively small.

The present application relates to a driving structure for an optical actuator including: a first driving part adapted to mounting a camera lens; and a second driving part adapted to mounting a photosensitive assembly, wherein the first driving part and the second driving part have a common magnet, the common magnet is arranged on a first base part or a second base part, the photosensitive assembly includes a photosensitive chip, and the first driving part drives the camera lens to translate in x-axis and y-axis directions by means of the electromagnetic induction of a camera lens driving coil and the common magnet, and the second driving part drives the photosensitive chip to translate in the x-axis and y-axis directions by means of the electromagnetic induction of a photosensitive assembly driving coil and the common magnet; and the camera lens and the photosensitive chip are configured to be driven simultaneously and move in opposite directions. Further provided in the present application is a corresponding camera module. According to the present application, the anti-shake stroke and the anti-shake response speed of the camera module may be improved while keeping the volume of the module relatively small.

An actuator causes vibration of a movable body by a magnetic drive mechanism. The movable body includes: a support shaft having an outer circumferential surface fixed with a magnet; a cup-shaped first magnetic member fixed to an end surface of the magnet in an axial direction; and a second magnetic member fixed to an opposite side of an end plate of the first magnetic member from the side of the magnet. A weight adjustment section in the second magnetic member is a through hole. An outer shape of the second magnetic member is not reduced in size. A bent section of the first magnetic member overlaps an outer circumferential end of the second magnetic member. The weight adjustment section is provided on an inner circumferential side of an outer circumferential surface of the magnet. A magnetic member deficient portion is provided to avoid a portion with high magnetic flux density.

An actuator causes vibration of a movable body by a magnetic drive mechanism. The movable body includes: a support shaft having an outer circumferential surface fixed with a magnet; a cup-shaped first magnetic member fixed to an end surface of the magnet in an axial direction; and a second magnetic member fixed to an opposite side of an end plate of the first magnetic member from the side of the magnet. A weight adjustment section in the second magnetic member is a through hole. An outer shape of the second magnetic member is not reduced in size. A bent section of the first magnetic member overlaps an outer circumferential end of the second magnetic member. The weight adjustment section is provided on an inner circumferential side of an outer circumferential surface of the magnet. A magnetic member deficient portion is provided to avoid a portion with high magnetic flux density.