Abstract: A brake device of a robot arm utilizes a brake disc whose diameter is much larger than a diameter of a ratchet for increasing a contacting area of the brake disc, so as to generate a greater friction force. The brake device further utilizes a combining pin, a combining plate, and a plurality of guiding pins for transferring a rotating torque to the brake device having a larger diameter, so as to extend a moment arm of the friction force and generate a greater moment, which reduces a prepressing force and extends life of the brake device.

Abstract: A brake device of a robot arm utilizes a brake disc whose diameter is much larger than a diameter of a ratchet for increasing a contacting area of the brake disc, so as to generate a greater friction force. The brake device further utilizes a combining pin, a combining plate, and a plurality of guiding pins for transferring a rotating torque to the brake device having a larger diameter, so as to extend a moment arm of the friction force and generate a greater moment, which reduces a prepressing force and extends life of the brake device.

Abstract: An encoded calibrating plate is fixed on the working environment of the robot arm and has a chessboard pattern with each square in the chessboard pattern being an encoding. The encoding indicates direction or position on the encoded calibration plate. A visual system of the robot arm captures an image of the encoded calibrating plate, calculates the coordinates encoding of the encoded calibration plate, and positions the visual system to calibrate a positioning error of the robot arm and the visual system.

Abstract: An articulation module for robot and a control method for the same are provided. A plurality of buffer springs are sleeved on a passive element sleeved on a reduction mechanism. A sensor is sleeved on the buffer springs to form a multi-sleeved articulation module. By detecting a difference angle of the distorted buffer springs, the motor is controlled to rotate along with a resistance direction for ensuring operation safety.

Abstract: An optical disk drive is disclosed to fix a main board in the casing and a second board under the tray. A flat cable on the bottom of the casing connects the main board with one end, and forms a bent portion to connect the connector of the second board at the other end. A cable protection device close to the connector is fixed under the tray to face the bent portion with an incline for preventing the bent portion from bending.

Abstract: An emergency ejection device is disclosed for a slot-in optical disc drive. A thin stick inserts into an ejection hole to rotate an ejection plate for an emergency ejection. A guide pin slides along a guide slot to rotate a release bar such that a clutch gear at the other end of the release bar departs from a self-locking power unit. Then the ejection plate moves a rack to rotate a ratchet unit at a predetermined direction for driving a transmission gear unit to unload a disc.

Abstract: A slot-in type optical disk drive is disclosed. An inclined flange is protruded on the lower end of a guide pin. When ejecting a disc, a power unit moves a slider backward to push a shifting lever at one end of a detecting rod. The detecting rod is rotated to move the guide pin at the other end such that the inclined flange pushes the back edge of the disc to ascend along the inclined flange to avoid jamming.

Abstract: A casing structure of a slim optical disk drive is provided. The casing is formed by an upper casing and a lower casing. A notch is formed on the upper casing or the lower casing. The notch can receive a tag. The depth of the notch is larger than or equal to the thickness of the tag. The tag adhered to the notch does not cross over the notch and jut out from the casing, so that the gap is avoided and the noise is reduced.

Abstract: An emergency ejection protecting module is disclosed to protect the emergency ejection device in an optical disc drive. When the optical disc drive reads/writes a disc, moving a protection door at the case to reveal an ejection hole causes an abnormal operation of the emergency ejection. The contact end protruded from the protection door activates a sensor to transmit an ejection signal to the optical disc drive, and the optical disc drive starts the ejection operation to protect the disc.

Abstract: An optical disk drive is disclosed to fix a main board in the casing and a second board under the tray. A flat cable on the bottom of the casing connects the main board with one end, and forms a bent portion to connect the connector of the second board at the other end. A cable protection device close to the connector is fixed under the tray to face the bent portion with an incline for preventing the bent portion from bending.

Abstract: A force feedback device is provided. Several spring-sleeved screw bolts respectively pass through the suppression holes around the top cover to fix the top cover on the base. Each spring in the ladder-shaped suppression hole is suppressed between the nut of the screw bolt and the top cover. Since the body of the screw bolt is longer than a predetermined height of the suppression hole, an absorption gap is reserved between the nut and the top cover to provide a smooth feel in operating the joystick.

Abstract: A method is disclosed to detect the voltage of a limit switch in an optical disc drive. The method includes following steps: loading an optical disc when the voltage of the limit switch is at a high level, completing the disc loading process when the voltage is changed to a low level, sampling the voltage of the limit switch predetermined times when the voltage is changed to the high level again, detecting the sampling voltages, completing the disc ejecting process when the sampling voltages are all at the high level, and determining a voltage bouncing to maintain the disc loaded status to avoid disc ejection misjudgment of the optical disc drive when the sampling voltages are not all at the high level.

Abstract: A slot-in optical disk drive with lifting ejection device is disclosed. A sliding device which has a first guiding slot and a second guiding slot is driven by a transmission unit. A sliding bolt protruded from a traverse is inserted into the first guiding slot, and the traverse connects with the sliding device. A lifting ejection device has a column vertically set in a housing and a sleeve which covers the column. A guiding pin protruded from the sleeve is inserted into the second guiding slot and is driven by the sliding device to disengage an optical disk.

Abstract: A slim optical disk drive includes a lower housing, a tray, a protection plate, a flexible cable and an isolated part. The tray is supported by two slide rails for sliding in or sliding out of an opening of the lower housing. The protection plate is for covering a bottom of the tray. The flexible cable includes a plurality of wires. The flexible cable extends toward the opening and is stuck on the lower housing. A curved area is formed by bending the flexible cable near the opening. The flexible cable is accommodated between the protection plate and the lower housing when the tray is slid inside the lower housing. The isolated part is disposed on the protection plate. The isolated part is for shielding predetermined wires of the plurality of the wires to reduce noise of signals.

Abstract: An optical disc clamping device is provided. A driving bar is moved away from a center hole to synchronously drive a first linking bar and a second linking bar. A first pivotal rod and a second pivotal rod are respectively driven by the first slider and the second slider to move towards the center hole to drive a carrier which carries a chucking disk disposed thereon to contact a spindle motor. A suppresser is fixed at the rim of the center hole to press on the chucking disk to clamp the disc stably.

Abstract: An optical disc clamping device is disclosed. Two concentric rotators with inward/outward rotation are disposed in the inner ring of a stationary seat, and a number of protruded slide grooves support the indented slide base for sliding, such that the stationary seat, the two rotators and the pressing plate are directly suspended to move together. The two-stage rotation enlarges the descent distance of the clamping device and directly descends the pressing plate for clamping the optical disc stably.

Abstract: The invention provides a method for ejecting an optical disk and a related ejection device for a slot-in disk drive. The ejection device includes a block disposed on a contact end of an unloading bar. The block stretches out of the contact end of the unloading bar along a longitudinal direction of the unloading bar for pushing a small size optical disk so that a distance between a center of the small size optical disk and a contact end of a loading bar exceeds a predetermined distance. When the small size optical disk is unloaded, the unloading bar backs to an initial position, the slot-in disk drive idles to load and unload the small size optical disk continuously for pushing the small size optical disk outwardly further.

Abstract: A protection device of a slot-in optical disk drive is provided. The protection device is disposed between two linking parts of the slot-in optical disk drive. One of the two linking parts is formed with a slot, and the other one of the two linking parts is connected to an upper end of a guide pin. A lower end of the guide pin protrudes and is inserted into the slot, and a portion of the guide pin corresponding to a side of the slot is formed with a notch. As the notch engages with the slot, the situation that the guide pin slides out of the slot can be avoided.

Abstract: The invention provides a protection cover of a pick-up head provided on a traverse of an optical drive. A plate flatly is positioned on an upper surface of the traverse, and the plate has a slot, with one end of the slot fastened to a spindle motor to clamp a disc and the other end of the slot forming a staying part for the pick-up head to stay in a stand-by mode. The pick-up head is disposed in the slot and has an objective lens. When the objective lens stays in the staying part out of a periphery of a 12-cm disc, the protection cover crosses over the staying part to protect the objective lens.

Abstract: A method is disclosed to detect the voltage of a limit switch in an optical disc drive. The method includes following steps: loading an optical disc when the voltage of the limit switch is at a high level, completing the disc loading process when the voltage is changed to a low level, sampling the voltage of the limit switch predetermined times when the voltage is changed to the high level again, detecting the sampling voltages, completing the disc ejecting process when the sampling voltages are all at the high level, and determining a voltage bouncing to maintain the disc loaded status to avoid disc ejection misjudgment of the optical disc drive when the sampling voltages are not all at the high level.