Abstract: A magnetic switch apparatus includes a button and a magnetic mechanism. The button is capable of moving between a first position and a second position. The magnetic mechanism is configured to drive the button to be kept in the first position, and drive the button to move from the second position to the first position.

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: An angle sensor for measuring angular parameters of a rotary member includes a shaft, a rotary disc being connected to the rotary member and rotatable about the shaft, a number of electromagnetic elements disposed on the rotary disc, a precision controller electrically connected to the rotary disc for selectively magnetizing the electromagnetic elements, a magnetic sensor configured for sensing the magnetic field of the magnetized electromagnetic elements and generating sensing signals every time a magnetized electromagnetic element passes under the magnetic sensor, a mounting plate configured for mounting the magnetic sensor, the mounting plate being fastened to the shaft, and a calculator electrically connected to the magnetic sensor for receiving the sensing signals, the calculator being configured for calculating the angular parameters of the rotary member according to the received sensing signals, a corresponding elapsed time and the angle between adjacent magnetized electromagnetic elements.

Abstract: A support device adjustable in 3-DOF includes a base, a pitching arm, a rolling arm, a yawing arm, a pitching drive unit, a rolling drive unit, a yawing drive unit, and a controller. The rolling arm rotatably interconnects the pitching arm and the yawing arm. The pitching, rolling, and yawing drive units are configured for automatically driving the pitching, rolling, and yawing arms about pitch, roll, and yaw axes respectively. The roll axis is perpendicular to the pitch and yaw axes. The controller is configured for controlling the pitching, rolling and yawing drive units in response to control inputs. In use, a display panel can be attached to the yawing arm and automatically pitch, roll, and/or yaw by the respective drive units under control of the controller, to achieve an optimum viewing angle.

Abstract: A rotatable connector includes a first rotating member and a second rotating member. The first rotating member includes a first surface and an opposite second surface. The first surface forms first pins, and the second surface forms fixing bodies each comprising a first portion and a second portion. The first portion and the second portion cooperatively define a latching groove therebetween. The second rotating member includes a third surface opposing the first rotating member and an opposite fourth surface. The third surface forms circular latching bodies rotatably retained within the latching groove. The fourth surface forms second pins. The fixing bodies and the latching bodies cooperatively define cavities fully filled in electrical conductive material. The wires that are respectively fixed to the first pins and the second pins are capable of being electrically connected by the electrical conductive material.

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: An electronic assembly comprises a rotation device comprising a fixed platform defining a through hole. An annular groove is formed in the inside wall of the fixed platform. A first transmission element seats a plurality of teeth. A second transmission element is located in the through hole, and comprises a threaded axis portion and a toothed portion meshing with the plurality of teeth. A third transmission element comprises a rotation portion rotatably mounted in the interior of the annular groove of the fixed platform. A threaded hole is defined in the rotation portion, and is configured for cooperating with the threaded axis portion. A driver source is fixed on the fixed platform and is configured for rotating the first transmission element. An electronic device is mounted on the third transmission element.

Abstract: A kinetic energy collection device is mounted on a vehicle body. The vehicle body includes drive disks rotated synchronously with wheels of the vehicle body. The kinetic energy collection device includes transmission units, a lift out unit, electrical generators, and an electrical storage. The transmission units are slidably mounted on the vehicle body and include friction disks. The lift out unit includes a braking controller, a pull rod connected with the braking controller, and connection rods rotatably connect the pull rod to the transmission units. The braking controller drives the pull rod to move in response to user's operations, so as to drive the connect rods to rotate, and thus to drive the friction disks of the transmission units to engage or disengage with the drive disks correspondingly. The transmission units drive the electrical generators to generate power. The electrical storage unit stores power generated by the electrical generators.

Abstract: The tidal power generator includes a hollow container, an impeller designed for unidirectional rotation, an electric generator fixed in the container, and a chargeable power source. A first opening and an opposite second opening are defined in the container. The impeller is positioned at the second opening and configured for unidirectionally rotating pushed by air flow. The electric generator includes a stator and a rotor extending from the stator. The rotor is fixedly connected to the impeller. The rotor rotates with rotation of the impeller so that the stator outputs electrical energy. The power source is configured for storing the output electrical energy.

Abstract: A transmission device includes a holder, a pivot shaft, and an elastic member. The holder defines a receiving hole. The pivot shaft is received in the receiving hole. The elastic member is received in the receiving hole, fixed to the holder, and tightly enfolds the pivot shaft. When torques applied to the holder or the pivot shaft are larger than a predetermined value, the elastic member is deformed such that the pivot shaft rotates relative to the holder.

Abstract: A fixed base comprises an upper cover comprising an outer canister a top plate and a sidewall. The sidewall encircles the top plate to form a receiving room. An inner canister penetrates the receiving room and is attached to the top plate, which comprises a wall. At least one hatch is defined in the wall, and is connected to the receiving room. A positioning component is set inside the surface of the top plate. A limitation frame comprises a frame body, a connecting block, and a positioning block. The positioning block is slidably connected to the positioning component. At least one groove opposite the hatch is defined in the wall of the frame body, and comprises a sliding groove and a fixing groove connecting with the sliding groove. The fixed base further comprises a driver and a trigger switch.

Abstract: A slide type electronic device is provided. The electronic device includes a base; a sliding member slidably connected to the base; a release assisting mechanism includes an angled groove and a resilient member, the angled groove includes a first groove and a second groove, the first groove and the second groove extend to form an angle and meet at an intersection, the resilient member includes a protrusion received in the angled groove; when the sliding member slides relative to the base, the resilient member moves with the sliding member and the protrusion is guided to move along the angled groove, which causes the resilient member to bend elastically; after the protrusion passes the intersection, the protrusion engages one of the first groove and the second groove, which facilitates the sliding of the sliding member via the restoration of the resilient member.

Abstract: The present invention provides an electronic device having reserve power during battery replacement. The electronic device includes a body and a printed circuit board (PCB) mounted in the body. The body defines an accommodating space. At least two pairs of electric joint elements are fitted on the PCB. The accommodating space is configured to accommodate a first battery. At least one pair of electric joint elements is engaged with the battery. Each of the at least two pairs of electric joint elements is aligned in parallel to each other. When the first battery is replaced by a second battery, a first pair of the electric joint elements is kept engaged with the first battery and a second pair of the electric joint elements is engaged with the second battery.

Abstract: A hinge assembly includes a spacing member, a first fixing member, and a second fixing member. The spacing member includes two opposite surfaces. The first fixing member is pivotally connected to the spacing member, and is in tight contact with one of the two opposite surfaces of the spacing member. The second fixing member is pivotally connected to the spacing member, and is in tight contact with the other of the two opposite surfaces of the spacing member. An electronic device using the hinge assembly is also provided.

Abstract: A connecting device is used in an electronic device. The electronic device includes a housing including a bottom plate, a sidewall and a pivot shaft. The sidewall extends perpendicularly from the bottom plate and defines an opening and a slot. The pivot shaft extends perpendicularly from the bottom plate and is aligned with the slot. The connecting device includes a driven gear, a main body and a driving member. The driven gear is disposed on the bottom plate, rotatably positioned by the pivot shaft, and fixed to the main body. The main body defines more than one connection port. The driving member is engaged with the driven gear and protrudes out from the slot. The driving member is operable to rotate the driven gear and the main body around the pivot shaft, thereby switches the connection ports to be exposed to the outside of the housing via the opening.

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 level measuring device for measuring the level of a surface includes a support, a first pivot shaft, a second pivot shaft, a pendulum, a first rotation sensor, a second rotation sensor and a computing module. The support includes a bottom surface which is configured for contacting the surface. The first pivot shaft is rotatably supported by the support. The second pivot shaft is rotatably linked to the first pivot shaft and perpendicular to each other. The pendulum is suspended from the second pivot shaft. The first rotation sensor and the second rotation sensor are configured for sensing rotated angle and direction of the first pivot shaft and the second pivot shaft, caused by the displacement of the pendulum. The computing module is configured for calculating the level of the surface using the rotated angle and direction.

Abstract: A transmission device includes a first transmission mechanism comprising a first rotatable member and a first transmission member fixed to the first rotatable member for rotating together with the first rotatable member; and a second transmission mechanism comprising a second rotatable member and a second transmission member fixed to the second rotatable member for rotating together with the second rotatable member. The second transmission member received in the first transmission member, and the second transmission member being magnetically connected with the first transmission member. When a load applied to the first transmission mechanism is less than a predetermined value of the first transmission mechanism, the first transmission member rotates together with the second transmission member by a magnetic force generated therebetween, which in turn makes the first transmission mechanism rotates with the second transmission mechanism together.

Abstract: A connecting device is used in an electronic device. The electronic device includes a housing including a bottom plate, a sidewall and a pivot shaft. The sidewall extends perpendicularly from the bottom plate and defines an opening and a slot. The pivot shaft extends perpendicularly from the bottom plate and is aligned with the slot. The connecting device includes a driven gear, a main body and a driving member. The driven gear is disposed on the bottom plate, rotatably positioned by the pivot shaft, and fixed to the main body. The main body defines more than one connection port. The driving member is engaged with the driven gear and protrudes out from the slot. The driving member is operable to rotate the driven gear and the main body around the pivot shaft, thereby switches the connection ports to be exposed to the outside of the housing via the opening.

Abstract: A support device adjustable in 3-DOF includes a base, a pitching arm, a rolling arm, a yawing arm, a pitching drive unit, a rolling drive unit, a yawing drive unit, and a controller. The rolling arm rotatably interconnects the pitching arm and the yawing arm. The pitching, rolling, and yawing drive units are configured for automatically driving the pitching, rolling, and yawing arms about pitch, roll, and yaw axes respectively. The roll axis is perpendicular to the pitch and yaw axes. The controller is configured for controlling the pitching, rolling and yawing drive units in response to control inputs. In use, a display panel can be attached to the yawing arm and automatically pitch, roll, and/or yaw by the respective drive units under control of the controller, to achieve an optimum viewing angle.