Abstract: A bicycle rear derailleur includes a base component, a movable component, a linkage assembly, a chain guide and a transmission assembly. The linkage assembly is pivotably connected to the base component and the movable component. The chain guide is pivotably disposed on the movable component. The transmission assembly is disposed on the linkage assembly. The transmission assembly comprises a driving source, a circuit board and a sensor, the driving source is configured to provide a power to the movable component to drive the movable component to move relative to the base component, the circuit board is electrically connected to the driving source, the circuit board has a first surface and a second surface located opposite to each other, the sensor is disposed on the circuit board, and the first surface and the second surface pass through the sensor.

Abstract: A method for controlling a derailleur in low battery remaining capacity includes determining whether a remaining capacity of a first battery of the derailleur is smaller than or equal to a first derailleur battery threshold. When the remaining capacity of the first battery is determined to be smaller than or equal to the first derailleur battery threshold, at least one of gear positions of the derailleur is invalided and non-selectable by the derailleur.

Abstract: A pairing method is adapted for a first bicycle assembly and a second bicycle assembly. The pairing method includes driving the first bicycle assembly to perform a self-check procedure and determining whether the first bicycle assembly passes the self-check procedure. If yes, completing pairing between the first bicycle assembly and the second bicycle assembly. If no, not completing pairing between the first bicycle assembly and the second bicycle assembly.

Abstract: A method for controlling a derailleur in low battery remaining capacity includes determining whether a remaining capacity of a first battery of the derailleur is smaller than or equal to a first derailleur battery threshold. When the remaining capacity of the first battery is determined to be smaller than or equal to the first derailleur battery threshold, at least one of gear positions of the derailleur is invalided and non-selectable by the derailleur.

Abstract: A synchronous hinge module includes a first axle, a second axle, a third axle, a fourth axle, at least one central frame, at least two connecting bases, a plurality of first baffle plates, at least two side frames, and a plurality of second baffle plates. The at least one central frame is disposed around the first axle and the second axle. The at least two connecting bases are engaged with two opposite ends of the at least one central frame respectively. The plurality of first baffle plates is respectively disposed around the first axle, the third axle and the second axle, the fourth axle. Each of the first baffle plates extends outside each of the at least two connecting bases and the at least one central frame.

Abstract: An electronic device includes a first body, a second body and a hinge assembly. The hinge assembly includes a bearing base, a movable base, a first hinge mechanism, a second hinge mechanism and a switching member. The bearing base is connected to the first body and has a first engaging portion. The first hinge mechanism is connected between the movable base and the second body. The second hinge mechanism is connected between the movable base and the bearing base. The first and second hinge mechanisms are connected to adjacent sides of the movable base. The switching member includes a main body slidably connected to the movable base in a switching direction, a second engaging portion engaged with or disengaged from the first engaging portion as the main body moves, and an interference portion entering or exiting the first hinge mechanism as the main body moves.

Abstract: An electronic device includes a first body, a second body and a hinge assembly. The hinge assembly includes a bearing base, a movable base, a first hinge mechanism, a second hinge mechanism and a switching member. The bearing base is connected to the first body and has a first engaging portion. The first hinge mechanism is connected between the movable base and the second body. The second hinge mechanism is connected between the movable base and the bearing base. The first and second hinge mechanisms are connected to adjacent sides of the movable base. The switching member includes a main body slidably connected to the movable base in a switching direction, a second engaging portion engaged with or disengaged from the first engaging portion as the main body moves, and an interference portion entering or exiting the first hinge mechanism as the main body moves.

Abstract: A synchronous hinge module includes a first axle, a second axle, a third axle, a fourth axle, at least one central frame, at least two connecting bases, a plurality of first baffle plates, at least two side frames, and a plurality of second baffle plates. The at least one central frame is disposed around the first axle and the second axle. The at least two connecting bases are engaged with two opposite ends of the at least one central frame respectively. The plurality of first baffle plates is respectively disposed around the first axle, the third axle and the second axle, the fourth axle. Each of the first baffle plates extends outside each of the at least two connecting bases and the at least one central frame.

Abstract: A foldable electronic device includes a first body, a second body and a hinge body. The hinge body is pivoted to the first body around a first pivoting axis and pivoted to the second body around a second pivoting axis so that the first body is able to rotate relatively to the second body. When the first body rotates to a first position relatively to the second body, a first front surface of the first body is closed to a second front surface of the second body on a closing plane, and a pivoting plane where the first pivoting axis and the second pivoting axis are located on and the closing plane are oblique to each other.

Abstract: An assembled wearable electronic device includes a first body, a second body and an engaging assembly. The first body has a primary system for providing the independent operation of the first body and producing a related first data. The second body has a secondary system and a fixing assembly. The secondary system is for providing the independent operation of the second body and producing a related second data. The engaging assembly is disposed at one of the first and second bodies. When the engaging assembly is located at a first position, the first and second bodies contact each other to be combined through the engaging assembly. When the engaging assembly moves to a second position, the first and second bodies are configured to be separated from each other. When the first and second bodies are connected to each other, the second data is read by the primary system.

Abstract: A foldable electronic device includes a first body, a second body and a hinge body. The hinge body is pivoted to the first body around a first pivoting axis and pivoted to the second body around a second pivoting axis so that the first body is able to rotate relatively to the second body. When the first body rotates to a first position relatively to the second body, a first front surface of the first body is closed to a second front surface of the second body on a closing plane, and a pivoting plane where the first pivoting axis and the second pivoting axis are located on and the closing plane are oblique to each other.

Abstract: An inclinable pick-and-place head of a disc pick-and-place device comprises a first frame and a second frame movably coupled thereto; said first frame is coupled to a disc pick-and-place head; a first actuating mechanism may drive a bottom of the first frame to be near to or leave the second frame to cause a pick-and-place face of the pick-and-place head coupled to a disc is inclined to shorten a level width of the disc relative to an accepting groove of a disc tray. Thereby, an action similar to picking up and placing in a disc directly by a human's hand can be executed so that the disc is not blocked by tabs around the accepting groove or a panel of a copier to place in the accepting groove or take out from the accepting groove.

Abstract: A detecting mechanism of a disc pick-and-place device comprises a first frame and a pick-and-place head, a detecting portion and a sensor respectively coupled thereto. When the pick-and-place picks up at least two stacked discs, the detecting portion then shows a state different from when the pick-and-place head picks up one disc, and when the sensor senses that the detecting portion shows the different state, it may then output a corresponding signal thereby allowing the disc pick-and-place device to detect whether at least two discs are picked up and be prevented from placing at least two discs into a disc copier to avoid the incapability of copying and the speed decreasing of copying and even the damage of the copier.

Abstract: A control mechanism for a clamper guider in a slot-in drive comprises a motor used to drive a transmission sheet to move through a gear train; the transmission sheet drives a control sheet to rotate counterclockwise or clockwise and further to cause a raised piece of the control sheet to prop against or separate from the lower end of a downward bended section of the clamper guider to allow a clamper at the lower section of the clamper guider to be separated from or entered the location that a disc is clamped. Whereby, the whole control mechanism has a more power saving structure and the matching design of the whole transmission structure and the motor used therein is more convenient.

Abstract: A clamper guider in a slot-in drive comprises a sheet body, a lower section at the lower side of the sheet body is disposed at the front end of the sheet body; a rear section pivotally connected to a ceiling plate of a chassis is disposed at the rear end of the sheet body; an arm is extended at the flank side of the sheet body, the flank side of the arm is connected to the ceiling plate of the chassis; a round hole combined with said clamper is disposed at the lower section. Whereby, the clamper guider has a smaller volume and the matching design of each component in the whole chassis is more convenient. And, a shorter pivoting end is disposed between the clamper guider and the ceiling plate of the chassis and the end that the clamper guider is combined with the clamper is more stable rather not to yield a shaking in the level direction.

Abstract: A transmission mechanism in a slot-in drive comprises a chassis respectively connected to a motor, worm, worm gear and a plurality of spur gears, a rubber roller, transmission sheet and control sheet, in which one of the spur gears and the rubber roller are connected to a same rotating shaft and can be driven by the adjacent spur gear; another spur gear can drive a rack of the transmission sheet to allow the transmission sheet to drive the control sheet to move; fewer components are installed in the whole structure, the assembly and the manufacturing are easier and the production cost can be reduced.

Abstract: An anti-shock traverse structure includes a movable frame attached to a traverse. The movable frame has elastic plates extending therefrom. The elastic plates have respective upwardly bent sections to resiliently bias against a lower side of a tray.

Abstract: A cleaning disc fro cleaning a roller in a drive is used to clean the dust attached on the surface of the roller; it comprises a body whose shape and size are same as a disc; one face of the body is combined with an adhesive film; using adhesive film to contact with the surface of the roller to clean the dust attached on the surface of the roller so as to allow the roller rather not to pollute a disc and a slipping phenomenon is rather not yielded when the disc is driven by the roller to enter or retreat from the drive.

Abstract: A clamper guider in a slot-in drive comprises a sheet body, a lower section at the lower side of the sheet body is disposed at the front end of the sheet body; a rear section pivotally connected to a ceiling plate of a chassis is disposed at the rear end of the sheet body; an arm is extended at the flank side of the sheet body, the flank side of the arm is connected to the ceiling plate of the chassis; a round hole combined with said clamper is disposed at the lower section. Whereby, the clamper guider has a smaller volume and the matching design of each component in the whole chassis is more convenient. And, a shorter pivoting end is disposed between the clamper guider and the ceiling plate of the chassis and the end that the clamper guider is combined with the clamper is more stable rather not to yield a shaking in the level direction.

Abstract: A transmission mechanism in a slot-in drive comprises a chassis respectively connected to a motor, worm, worm gear and a plurality of spur gears, a rubber roller, transmission sheet and control sheet, in which one of the spur gears and the rubber roller are connected to a same rotating shaft and can be driven by the adjacent spur gear; another spur gear can drive a rack of the transmission sheet to allow the transmission sheet to drive the control sheet to move; fewer components are installed in the whole structure, the assembly and the manufacturing are easier and the production cost can be reduced.