Abstract: A washing machine includes a damper to reduce a vibration. The damper includes a damper frame and a rod respectively supported by the tub and the housing. The rod may move relative to the damper frame in an axial direction by being inserted into a support portion of the damper frame. A rotation movement member is movable in the axial direction by rotating with respect to the damper frame. A friction member is disposed between the support portion and the rotation movement member and applies a friction force to the rod. A switching unit switches, by rotating the rotation movement member, the damper between a first state in which the friction member is movable together with the damper frame with respect to the rod and a second state in which the friction member is movable together with the rod with respect to the damper frame.

Abstract: A water transmission device and a washing machine including the same. The washing machine includes a water transmission device configured to discharge water in a washing tub, wherein the water transmission device includes a filter case which is disposed under the washing tub and accommodates a filter, and into which the water in the washing tub is introduced, a pump case connected to the filter case and accommodating an impeller configured to suction the water in the filter case and discharge, a motor configured to rotate the impeller, a suction hole through which a side portion of the pump case facing a center of the impeller and a side portion of the filter case, and an outlet which is open downward from a lowest end inside the pump case and communicates with a water discharge pipeline.

Abstract: A washing machine includes a water tub arranged in a case and a damper installed between the case and the water tub for damping vibrations of the water tub. The damper includes a plunger having one end supported on the case; a rod having one end supported on the water tub and the other end movably inserted to the plunger; a housing arranged to wrap around some of the plunger and the rod and including a friction member arranged between the housing and the plunger to contact an outer circumferential surface of the plunger; and a switching device configured to be in a first state in which the rod is coupled to the housing and able to move within the plunger along with the housing and a second state in which the rod is decoupled from the housing and able to move solely within the plunger.

Abstract: A washing machine capable of automatically supplying detergent while supplying water. The washing machine includes a body, a tub arranged inside the body, a detergent supplier configured to supply detergent to the tub, and a water supply pipe configured to supply washing water to the detergent supplier, and the detergent supplier includes a detergent box including an accommodating portion in which the detergent is placed, and a water supply plate configured to supply the washing water, which is supplied from the water supply pipe, to the detergent box.

Abstract: The present disclosure is to deal with a case in which waterproof clothes, etc. are included in laundry. A washing machine 1 having a dehydration function may include a drum 20 rotatably accommodated in a tub 10, a water-level sensor 60 configured to detect a water level of water IW collected between the tub 10 and the drum 20, a circulation pump 80 configured to supply water to the inside of the drum 20 and to circulate water collected in the inside of the tub 10, and a control apparatus 70 configured to perform a dehydration process. The control apparatus 70 may include a dehydration course decider 74 configured to decide a dehydration course based on a change in water level of water IW collected between the tub 10 and the drum 20 by driving of the circulation pump 80.

Abstract: A washing machine includes a water tub arranged in a case and a damper installed between the case and the water tub for damping vibrations of the water tub. The damper includes a plunger having one end supported on the case; a rod having one end supported on the water tub and the other end movably inserted to the plunger; a housing arranged to wrap around some of the plunger and the rod and including a friction member arranged between the housing and the plunger to contact an outer circumferential surface of the plunger; and a switching device configured to be in a first state in which the rod is coupled to the housing and able to move within the plunger along with the housing and a second state in which the rod is decoupled from the housing and able to move solely within the plunger.

Abstract: A water transmission device and a washing machine including the same. The washing machine includes a water transmission device configured to discharge water in a washing tub, wherein the water transmission device includes a filter case which is disposed under the washing tub and accommodates a filter, and into which the water in the washing tub is introduced, a pump case connected to the filter case and accommodating an impeller configured to suction the water in the filter case and discharge, a motor configured to rotate the impeller, a suction hole through which a side portion of the pump case facing a center of the impeller and a side portion of the filter case, and an outlet which is open downward from a lowest end inside the pump case and communicates with a water discharge pipeline.

Abstract: A washing machine capable of automatically supplying detergent while supplying water. The washing machine includes a body, a tub arranged inside the body, a detergent supplier configured to supply detergent to the tub, and a water supply pipe configured to supply washing water to the detergent supplier, and the detergent supplier includes a detergent box including an accommodating portion in which the detergent is placed, and a water supply plate configured to supply the washing water, which is supplied from the water supply pipe, to the detergent box.

Abstract: The present disclosure is to deal with a case in which waterproof clothes, etc. are included in laundry. A washing machine 1 having a dehydration function may include a drum 20 rotatably accommodated in a tub 10, a water-level sensor 60 configured to detect a water level of water IW collected between the tub 10 and the drum 20, a circulation pump 80 configured to supply water to the inside of the drum 20 and to circulate water collected in the inside of the tub 10, and a control apparatus 70 configured to perform a dehydration process. The control apparatus 70 may include a dehydration course decider 74 configured to decide a dehydration course based on a change in water level of water IW collected between the tub 10 and the drum 20 by driving of the circulation pump 80.

Abstract: A power supply apparatus for use in electroplating includes an input-side rectifier (32). A rectifier output is converted into high-frequency signals in inverters (38a, 38b), which are transformed in transformers (48a, 48b). When the transformed high-frequency signals from the transformers are of positive polarity, they are rectified by a diode (50a or 50b) to cause a positive current to be supplied to a load (60). When the transformed high-frequency signals are of negative polarity, they are rectified by a diode (50c or 50d) to thereby cause a negative current to flow through the load. A first IGBT (54a) is connected in series with each of the diodes (50a, 50b) and is rendered conductive and nonconductive at a frequency lower than the high-frequency signal. Also, a second IGBT (54b) is connected in series with each of the diodes (50c and 50d) and is rendered nonconductive when the IGBT and nonconductive at the lower frequency.

Abstract: An electroplating current supply system includes a power supply unit for supplying an object to be plated (4) with an electroplating current whose polarity is inverted at predetermined intervals. The power supply unit includes a first DC power supply (3A) supplying a positive current and a second power supply (3B) supplying a negative current. The system includes further a processing unit (58) for controlling the ratio in magnitude and duration of the positive current (I2) to the negative current (I1) supplied to the object so as to plate the object with a uniform coating.

Abstract: A power supply apparatus for use in electroplating includes an input-side rectifier (32). A rectifier output is converted into high-frequency signals in inverters (38a, 38b), which are transformed in transformers (48a, 48b). When the transformed high-frequency signals from the transformers are of positive polarity, they are rectified by a diode (50a or 50b) to cause a positive current to be supplied to a load (60). When the transformed high-frequency signals are of negative polarity, they are rectified by a diode (50c or 50d) to thereby cause a negative current to flow through the load. A first IGBT (54a) is connected in series with each of the diodes (50a, 50b) and is rendered conductive and nonconductive at a frequency lower than the high-frequency signal. Also, a second IGBT (54b) is connected in series with each of the diodes (50c and 50d) and is rendered nonconductive when the IGBT and nonconductive at the lower frequency.

Abstract: An electroplating current supply system includes a power supply unit for supplying an object to be plated (4) with an electroplating current whose polarity is inverted at predetermined intervals. The power supply unit includes a first DC power supply (3A) supplying a positive current and a second power supply (3B) supplying a negative current. The system includes further a processing unit (58) for controlling the ratio in magnitude and duration of the positive current (I2) to the negative current (I1) supplied to the object so as to plate the object with a uniform coating.

Abstract: A yarn package supply and empty bobbin removing apparatus for a warper creel, for removing empty bobbins from a plurality of pegs of a creel and putting yarn packages on the pegs, which includes a yarn package transfer frame having a shape resembling the letter H and supported so as to be located opposite to the pegs. The yarn package transfer frame is provided with holding devices arranged in two rows separated from each other by a distance corresponding to the distance between the adjacent rows of pegs.

Abstract: A bobbin sorting device which can prevent bobbins from packing any winding section is provided adjacent to a junction of a loop passage extending close to each of fine spinning frames and an automatic winder and a common passage along the automatic winder. The bobbin sorting device comprises trays carrying bobbins of different kinds of yarn to be supplied to the automatic winder through the common passage, trays having an identifying groove, and bobbin sorting means provided at the inlet of the common passage for engaging the groove of the tray.