Abstract: A device to sense degree of twist in a screwdriver and the magnitude of force applied includes a contacting portion, a deformation portion, a sensing portion, and a processor. The contacting portion receives a grip and twist pressure through the deformation portion which is tiltedly fixed to the contacting portion. The deformation portion carries the sensing portion and elastically deforms under the force and/or the torsion. The sensing portion detects a deformation of the deformation portion and generates a corresponding electrical signal. The processor receives the signal and determines the values of the twist caused and the force applied.

Abstract: A flatness sensing device includes a pressure sensing unit and a controller. The pressure sensing unit includes a plate portion, and a pressure sensor fixed and exposed at an edge of the plate portion. A sensing surface of the pressure sensor is flush with the bottom surface of the plate portion. The pressure sensor senses a pressure or lack of pressure of an object to be tested when it touches the object to be tested. The controller receives the pressure value output from the pressure sensor and determines a flatness of the object to be tested, the controller can issue an alarm on finding non-flatness and cause the degree of flatness to be displayed to a user.

Abstract: An unpowered stop mechanism includes a mounting seat, a driving member, and a stop assembly. The stop assembly is located on the mounting seat and oppositely positioned to the driving member. The stop assembly includes a guide member, a stop member, and a hinge arm. The stop member is received within a guide slot defined in the guide member. The hinge arm is pivotably coupled to the guide member. The hinge arm protrudes from the guide member and is oppositely positioned to the driving member. The driving member drives the hinge arm to drive the stop member to retract within the guide slot. Then the driving member is moved to be spaced from the hinge arm, the stop member is driven by a resilient member received within the guide slot to protrude out of the guide slot.

Abstract: A stub plucking device includes a transfer mechanism, a grasping mechanism, and a sensing mechanism. The grasping mechanism is driven by the transfer mechanism to move toward or away from a reel. The grasping mechanism includes a connector mounting a movable clasp, a fixed clasp, and a grasping driving member. The grasping driving member drives the movable clasp to move toward the fixed clasp to grasp an end stub of the reel. The sensing mechanism senses whether a contact force between the fixed clasp and the reel has reached a predetermined force. When the sensing mechanism senses that the contact force between the fixed clasp and the reel has reached the predetermined force, the transfer mechanism drives the grasping mechanism to move a predetermined distance away from the reel.

Abstract: An electric vehicle automatic charging system includes an electric vehicle including a receiving cavity with an opening and a shutter for closing the opening, a battery assembly receiving in the receiving cavity and a charging device. The battery assembly includes a battery pack including an electrode connecting member and a movable bracket including a magnetic member. The charging device includes a support table, a support plate, an electromagnetic fitting member being capable of generating a magnetic force for attracting the magnetic member, and a charger. When the shutter comes into contact with the support plate, the shutter changes from a closed state to an open state, the movable bracket drives the battery pack to move away from the receiving cavity along the support plate by the magnetic force until the electrode connecting member is electrically connected to the charger. An electric vehicle automatic charging method is also provided.

Abstract: An unpowered stop mechanism includes a mounting seat, a driving member, and a stop assembly. The stop assembly is located on the mounting seat and oppositely positioned to the driving member. The stop assembly includes a guide member, a stop member, and a hinge arm. The stop member is received within a guide slot defined in the guide member. The hinge arm is pivotably coupled to the guide member. The hinge arm protrudes from the guide member and is oppositely positioned to the driving member. The driving member drives the hinge arm to drive the stop member to retract within the guide slot. Then the driving member is moved to be spaced from the hinge arm, the stop member is driven by a resilient member received within the guide slot to protrude out of the guide slot.

Abstract: A speed reducer includes an input shaft, an output shaft, and a gear assembly coupled to the input shaft. The gear assembly includes a housing, an external gear, and at least two internal gears. The external gear is located within the housing and inscribes the at least two internal gears. One side of the at least two internal gears is rotatably coupled to the input shaft, and another side of the at least two internal gears is coupled to a connecting column of the output shaft. The at least two internal gears are offset on the input shaft, and the input shaft drives the at least two internal gears to maintain engagement with the external gear. The connecting column maintains transmission of the output shaft and the at least two internal gears.

Abstract: A system for determining a position of a test probe of a test fixture applied to a test pad on a dummy board is disclosed. The test pad includes conductive test zones, resistors, a first insulating zone, and a plurality of second insulating zones. Each resistor has a different resistance. Each resistor is connected to a different test zone. The test zones include a first test zone and a surrounding plurality of second test zones. The first test zone is insulated from the second test zones by the first insulating zone. Adjacent second test zones are insulated from each other by a different second insulating zone. Probe correction can be carried out according to the value of resistance read by a resistance measuring device which stores a correspondence table, and position of the probe adjusted accordingly.

Abstract: A fixture to enable correct positioning of components in surface mount technology (SMT) field includes a tray, a positioning mechanism, at least one first upper magnet, at least one second upper magnet, and at least one lower magnet. The tray has at least one positioning hole. The positioning mechanism includes a base member, at least one sliding assembly, and at least one positioning post. The sliding assembly is slidably mounted to the base member. The positioning post is mounted to the base member, and disposed in the positioning hole of the tray. The first upper magnet and the second upper magnet are attached to the tray. The lower magnet is attached to the sliding assembly. The tray and the positioning mechanism are repulsive when the lower magnet aligns with the first upper magnet but are attracted when the lower magnet aligns with the second upper magnet.

Abstract: A system for determining a position of a test probe of a test fixture applied to a test pad on a dummy board is disclosed. The test pad includes conductive test zones, resistors, a first insulating zone, and a plurality of second insulating zones. Each resistor has a different resistance. Each resistor is connected to a different test zone. The test zones include a first test zone and a surrounding plurality of second test zones. The first test zone is insulated from the second test zones by the first insulating zone. Adjacent second test zones are insulated from each other by a different second insulating zone. Probe correction can be carried out according to the value of resistance read by a resistance measuring device which stores a correspondence table, and position of the probe adjusted accordingly.

Abstract: A system for evaluating all functions of a mobile phone to benefit recycling purposes includes a robotic arm assembly, a camera test device, a touch test device, and a 3D Touch test device. The camera test device has a backlight screen and a target picture. The touch test device has at least one first stylus for applying input to a touch screen of a mobile phone. The 3D Touch test device has at least one second stylus for applying strong presses to the touch screen of the mobile phone. The robotic arm assembly can also move the mobile phone to enable image-capturing. A method for functionality-testing is also provided.

Abstract: A method for checking the proper dispensation of glue onto a circuit board in manufacture includes the use of fluorescent materials in such glue, activating a light source to illuminate a circuit board when the circuit board is placed on an electronic device, and controlling an image capturing device to capture an image of the circuit board. The image captured by the capturing device is compared with a standard stored image of the circuit board, and a determination is made as to whether the circuit board passes test according to the comparison.