Abstract: A simulated eye is capable of being changed between a contracted state and a dilated state. The simulated eye includes a housing having at least one guiding post, a driving device housed in the housing, a transmission member movably coupled to the driving device, an eyeball having a transparent portion, an elastic film including a simulated pupil, and a stopper. The simulated pupil is viewable at the transparent portion. The stopper is attached to the at least one guiding post, and is sandwiched between the elastic film and the transmission member. When the driving device drives the transmission member, a size of the simulated pupil is changeable, whereby the simulated eye is changed between the contracted state and the dilated state.

Abstract: A transmission device includes a first transmission mechanism and a second transmission mechanism. The first transmission mechanism includes a first rotating portion and an engaging portion fixed on the first rotating portion. The second transmission mechanism includes a second rotating portion and at least one overload protection subassembly. The at least one overload protection subassembly includes a transmission member pivotally attached on the second rotating portion and two flexible members resisting against an opposite end of the transmission member at two opposite rotating directions of the transmission member to make the transmission member locate at a non-rotatable position with respect to the first rotating portion. An end of the transmission member engages the engaging portion to rotate with the first transmission mechanism.

Abstract: A simulated eye is capable of being changed between a contracted state and a dilated state. The simulated eye includes a shell defining an opening, an eyeball, and a driving device. The eyeball is received in the shell and exposed at the opening, the eyeball includes a lens and a pupil, the pupil is visible through the lens, and a virtual image of the pupil formed via the lens. The driving device is configured to drive the pupil to move toward and backward the lens. When the transmission member drives the pupil to move, the virtual image of the pupil is changeable, and the simulated eye changed between a contracted state and a dilated state.

Abstract: An angle sensor measures a rotated angle and the angular velocity of a rotary disc by sensing the magnetic field generated by a number of electromagnetic elements disposed on the rotary disc. The precision of the angle sensor is adjusted by selectively magnetizing the electromagnetic elements.

Abstract: A rotatable connector includes a first rotating member, a second rotating member rotatable relative to the first rotating member, at least one conductive connecting member sandwiched between the first rotating member and the second rotating member, and a shaft. The first rotating member includes a first rotating body and a first flexible printed circuit board fixed to the first rotating body. The first rotating body includes at least one conductive portion electrically connected to the first flexible printed circuit board. The second rotating member includes a second rotating body and a second flexible printed circuit board fixed to the second rotating body. The second rotating body includes at least one conductive protrusion. The at least one conductive connecting member electrically connects the least one conductive protrusion to the at least one conductive portion. The shaft extends through the first rotating body, the second rotating body and the second flexible printed circuit board.

Abstract: A driving mechanism for driving a wheel of a toy car includes a motor, a first clutch, a second clutch, a guide shaft, a spring, and a limiting element. The first clutch driven by the motor has an engaging end surface defining a center hole thereon. The second clutch capable of latching with the wheel for driving the wheel has an engaging surface engaging with the engaging end surface. The second clutch defines a stepped hole substantially perpendicular to the engaging surface thereof, the stepped hole includes a first portion and a second portion. The guide shaft is disposed running through the stepped hole and has an end thereof fixed in the center hole. The spring sleeves the guide shaft and is compressed between the limiting element secured on the guide shaft and a stepped surface in the stepped hole.

Abstract: A simulated eye is capable of being rotatable along a circular track. The simulated eye includes an eyeball, a motor having a motor shaft, and a transmission assembly. The transmission assembly is fixed to the motor shaft and is driven to rotate around the motor shaft by the motor. The eyeball is fixed to the transmission assembly at a position departing from the axis of the motor shaft, and is driven to rotate around the motor shaft.

Abstract: A charging system includes a robot and a charging apparatus. The robot includes a rechargeable battery, a power receiving terminal electrically connecting with the rechargeable battery, and a detector for detecting a voltage of the battery. The charging apparatus for charging the robot includes a base comprising a receiving portion defining a sliding slot, a power supplying terminal disposed in the receiving portion and configured for electrically contacting with the power receiving terminal, a positioning board docked in the receiving portion for loading the robot, and a driving device including an inclined surface contacting with the positioning board via the sliding slot. The detector may send a control signal to the driving device to push the positioning board with the robot up from the receiving portion.

Abstract: An exemplary electronic device includes a detecting component and a storage unit. The detecting component generates detecting signals when the electronic device has been disassembled. The storage unit stores disassemble history information based on detecting signals received from the detecting component.

Abstract: A rotary device includes a first member, a second member, a first magnetic body secured to the first member, and a second magnetic body corresponding to the first magnetic body and secured to the second member. Corresponding surfaces of the first and second magnetic bodies have different polarities.