The present disclosure envisages an electromagnetic drive unit. The drive unit comprises a magnet having a north pole surface, a south pole surface, an operative top surface and an operative bottom surface. A coil having a pair of terminals is assembled on the magnet and hingeably coupled to the magnet, wherein a hingeable movement of the coil with respect to the magnet provides a reciprocating mechanical drive to the magnet. The hingeable movement of the coil is facilitated by providing an alternating supply to the pair of terminals of the coil. A hinge is provided on a base supporting the magnet for facilitating the pivotal movement of coil with respect to the magnet. A resilient band is provided adjacent the operative top surface of the magnet for securing the coil to the magnet.

A cradle includes a base assembly, a motion assembly, and a drive device. The base assembly includes a base plate, a pressure axle seat secured on the base plate, and two pressure bearing seats secured on the base plate. The motion assembly includes a movable plate, a rotary seat secured on the movable plate and pivotally connected with the pressure axle seat, two swinging rods connected with the rotary seat, a swinging seat connected with the swinging rods, two axles mounted on the swinging seat, two rollers mounted on the axles and abutting the pressure bearing seats, and a driven member secured on the movable plate. The drive device drives the driven member, the rollers roll along the pressure bearing seats, and the movable plate swings about the pressure axle seat in a sector manner to pacify the baby.

An electromechanical transducer apparatus for converting between mechanical energy and electrical energy is disclosed and includes first and second magnetic flux generators including pole pieces coupled to direct magnetic flux. Th magnetic flux generators are disposed such that opposite polarity pole pieces are spaced apart in adjacent relation. A pair of reciprocators are coupled for reciprocating movement between the pole pieces and are spaced apart by first and second air gaps. A closing piece completes a magnetic circuit and when the reciprocators are disposed such that the first air gap is smaller than the second air gap, magnetic flux generated by the first magnetic flux generator flows in a first direction via the first air gap through the closing piece. When the reciprocators are disposed such that the second air gap is smaller than the first air gap, magnetic flux generated by the second magnetic flux generator flows in a second opposite direction via the second air gap through the closing piece. A current carrying coil is disposed to electromagnetically interact with the magnetic flux.

A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.

A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.

This disclosure describes systems, devices, apparatuses, and methods of retracting or extending a button, such as a depressible button, pad, joystick, trigger, or bumper. The button can include a movable structure with magnets at two positions and a coil that can be energized to create a magnetic field. The button can be configured to retract when a current is applied to the coil, and to extend when a different current is applied to the coil. The button can include a magnetic core that can latch to a magnet when the button is retracted and that can latch to a different magnet when the button is extended. In some configurations, the button is configured to retract or extend relative to a printed circuit board, a housing, or both.

This disclosure describes systems, devices, apparatuses, and methods of retracting or extending a button, such as a depressible button, pad, joystick, trigger, or bumper. The button can include a movable structure with magnets at two positions and a coil that can be energized to create a magnetic field. The button can be configured to retract when a current is applied to the coil, and to extend when a different current is applied to the coil. The button can include a magnetic core that can latch to a magnet when the button is retracted and that can latch to a different magnet when the button is extended. In some configurations, the button is configured to retract or extend relative to a printed circuit board, a housing, or both.

The present disclosure provides a linear motor having a housing with an accommodation space; a vibrator accommodated in the accommodation space; and a first stator locating opposite to the vibrator and fixed to the housing. The first stator includes a first circuit board opposite to the vibrator, a first coil on a the side of the first circuit board close to the vibrator, and a first magnetic conductive sheet locating on a side of the first circuit board away from the vibrator. The linear motor further has a spring bracket supporting the vibrator in the accommodation space. The present invention is to provide a linear motor which improves the space utilization of the linear motor in a thickness direction.

The present disclosure provides a linear motor having a housing with an accommodation space; a vibrator accommodated in the accommodation space; and a first stator locating opposite to the vibrator and fixed to the housing. The first stator includes a first circuit board opposite to the vibrator, a first coil on a the side of the first circuit board close to the vibrator, and a first magnetic conductive sheet locating on a side of the first circuit board away from the vibrator. The linear motor further has a spring bracket supporting the vibrator in the accommodation space. The present invention is to provide a linear motor which improves the space utilization of the linear motor in a thickness direction.

A vibration motor and a tactile device are provided. The vibration motor has: a stationary portion; a movable portion having a magnet and capable of vibrating with respect to the stationary portion along a central axis extending in an up-down direction; and an elastic member. The stationary portion has: a housing, disposed radially outside from the movable portion and having a cylindrical shape extending along the central axis; a top surface portion, disposed above the movable portion, fixed to the housing, and extended in a direction intersecting with the central axis; and a coil, capable of applying a driving force to the movable portion. The elastic member is disposed below the top surface portion and above the movable portion. The elastic member is fixed to both the top surface portion and the movable portion, and supports the movable portion so that the movable portion can vibrate along the central axis.