Abstract: The present disclosure relates to a frequency sensitive shock absorber, and the frequency sensitive shock absorber includes a piston rod coupled so that one side is located inside a cylinder and the other side is located outside the cylinder, a main valve coupled to the piston rod and partitioning an inner space of the cylinder into a compression chamber and a tension chamber, a sub-piston rod coupled to one side of the piston rod and interlocked with the piston rod to reciprocate along a longitudinal direction of the cylinder, and a sub-valve module coupled to the sub-piston rod and generating a damping force according to a frequency during a tension stroke.

Abstract: A washing machine includes: a cabinet; a tub; a pump case provided so as to drain washing water; a pump filter that filters foreign substances in washing water and is able to be detached from the pump case; and a pump filter head that is combined with one side of the pump filter and causes the pump filter to rotate, wherein the pump filter head includes: a first head having a first state in which the first head is engaged with one side of the pump case and is combined with the pump case and a second state in which the first head is released from the pump case; and a second head that is positioned at front of the first head and is rotatable separately from the first head in the first state. A user can recognize whether the pump filter is fully fastened to the pump case.

Abstract: A fully automatic washing machine capable of performing a stable driving at high speed during a spin-drying cycle by increasing the strength of a bowl part of a drum, the washing machine including a cabinet, a tub provided at an inside the cabinet, a drum rotatably provided at an inside the tub, a driving apparatus provided at a lower side portion of the drum to rotate the drum, and a flange shaft coupled to a lower portion of the drum to be connected to the driving apparatus, the drum includes a body part and a bowl part having a rim part provided with a lower end thereof, and a bottom part provided at a lower end portion of the rim part, and the flange shaft is provided to be bent while extending from the bottom part to the upper end portion of the rim part.

Abstract: A washing machine includes: a cabinet; a tub; a pump case provided so as to drain washing water; a pump filter that filters foreign substances in washing water and is able to be detached from the pump case; and a pump filter head that is combined with one side of the pump filter and causes the pump filter to rotate, wherein the pump filter head includes: a first head having a first state in which the first head is engaged with one side of the pump case and is combined with the pump case and a second state in which the first head is released from the pump case; and a second head that is positioned at front of the first head and is rotatable separately from the first head in the first state. A user can recognize whether the pump filter is fully fastened to the pump case.

Abstract: A washing machine for reducing vibration and noise during a spin-drying cycle, and a control method thereof. According to the washing machine and the control method thereof, cloth piled up randomly in the washing tub is shaken and loosened through the stirring from side to side of the pulsator or the washing tub before water is supplied after putting the cloth therein, so that distribution of the cloth is made uniform to reduce vibration and noise during the spin-drying cycle. Further, unsatisfactory spin-drying due to abnormal vibration is prevented so that it is possible to reduce unnecessary consumption of water and spin-drying time. Further, even when the user does not put detergent in the detergent box but puts it directly onto the cloth, the detergent is shaken by the movement of the cloth, so it is possible to improve washing performance as the detergent and water are mixed well.