A vibration generating apparatus includes a trough having a mounting surface on which a workpiece is mounted, two plate springs supporting the trough, and a vibration generation unit vibrating the trough while elastically deforming the respective plate springs and moving the workpiece on the mounting surface, wherein the two plate springs are placed along movement directions of the workpiece and respectively have bent portions projecting in directions along the movement directions.

The current document is directed to non-linear haptic actuators that use a rotor, rotor-suspension, and spring subsystem to efficiently generate vibrational forces in various types of devices and appliances in which the non-linear haptic actuators are incorporated. Non-linear haptic actuators can be designed and manufactured to be more space efficient than unbalanced-electric-motor and linear-resonant vibration modules and, because most of the frictional forces produced in unbalanced-electric-motor and linear-resonant vibration modules are eliminated from non-linear haptic actuators, non-linear haptic actuators are generally more power efficient and robust than unbalanced-electric-motor and linear-resonant vibration modules.

A haptic generator device according to an embodiment of the present disclosure can include a stator, a rotor, a magnet, and a coil. The stator can include a stopper. The rotor can rotate in relation to the stator and can have a protrusion. The magnet can be provided on one of the rotor and the stator, where multiple magnets can be provided. The coil can be provided on the other of the rotor and the stator and can interact with the magnet to generate a rotational force. The rotor can perform an oscillating rotational movement within a 360-degree range. While the rotor is rotating in a first direction, a rotational movement of the rotor can be forcibly halted or can be rotated in a second direction opposite to the first direction to generate a rotational inertia vibration before the protrusion of the rotor collides with the stopper of the stator.

The present application provides a wheel rotation imaging device and a wheel rotation imaging intelligent advertising system. In the wheel rotation imaging device, power can be supplied by means of rotation of a wheel with the use of a self-powered unit, so an external power supply is not required; texts, images and videos can be displayed; in addition, a variety of sensors are integrated to acquire operation information of the device in real time, which facilitates the wheel rotation imaging device to adjust the imaging angle and brightness.

A concrete vibrator can further reduce vibration. The concrete vibrator includes a motor, a flexible shaft drivable by the motor, an unbalanced weight drivable with the flexible shaft, a flexible hose at least partially covering the unbalanced weight and the flexible shaft, a body housing accommodating the motor, and an elastic member between the body housing and the flexible hose.

The present disclosure provides a vibration device, including a stator, an eccentric wheel and an electromagnetic driving assembly. The eccentric wheel rotates around a rotating shaft relative to the stator. The electromagnetic driving assembly includes at least one magnetic element and an induction coil. The at least one magnetic element is disposed on the eccentric wheel. The induction coil corresponds to the magnetic element, and the induction coil is disposed on the stator. When a current is applied to the induction coil, the induction coil acts with the magnetic element to generate an electromagnetic force to drive the eccentric wheel to rotate around the rotating shaft, so that the vibration device generates a vibration. The rotating shaft is disposed on the stator.

A vibratory system for a compactor machine, the vibratory system optionally including a key shaft, an input shaft, a first output shaft and a second output shaft. The key shaft can have a first internal helically splined portion and a second internal helically splined portion. The first internal helically splined portion can be oppositely splined with respect to the second internal helically splined portion and arranged axially of the second internal helically splined portion. The input shaft can be configured with an external helically splined portion configured to be complimentary to the first internal helically splined portion of the key shaft. The first output shaft can be configured couple to the input shaft for rotation therewith. The second output shaft can have an external helically splined portion configured to be complimentary to the second internal helically splined portion of the key shaft.

An example compaction machine is provided that includes a compaction plate and a housing disposed on the top surface of the compaction plate. The compaction machine may also include an imbalance mass disposed within the housing and affixed to an imbalance mass shaft. The compaction machine may further include a first electric motor affixed to the housing and operably coupled to the imbalance mass shaft, and a second electric motor affixed to the housing and operably coupled to the imbalance mass shaft. The first electric motor and the second electric motor may be axially aligned along a shaft axis and affixed to the housing on opposite sides of the housing.

The present disclosure provides a vibration device, including a stator, an eccentric wheel and an electromagnetic driving assembly. The eccentric wheel rotates around a rotating shaft relative to the stator. The electromagnetic driving assembly includes at least one magnetic element and an induction coil. The at least one magnetic element is disposed on the eccentric wheel. The induction coil corresponds to the magnetic element, and the induction coil is disposed on the stator. When a current is applied to the induction coil, the induction coil acts with the magnetic element to generate an electromagnetic force to drive the eccentric wheel to rotate around the rotating shaft, so that the vibration device generates a vibration. The rotating shaft is disposed on the stator.

A surface compactor machine includes a cylindrical drum defining a cylindrical space in an interior portion of the cylindrical drum and having a central axis of rotation, and a counterweight in the cylindrical space. The compactor further includes a non-driven support wheel affixed to the counterweight and in contact with an underlying portion of an interior surface of the cylindrical drum beneath the counterweight. A drive motor is provided in the cylindrical space, and a drive wheel is mechanically rotatable by the drive motor. The drive wheel contacts an inner surface of the cylindrical drum such that rotation of the drive wheel by the drive motor urges the cylindrical drum to rotate about the central axis of rotation.