Abstract: A substrate transfer device includes a transfer unit configured to transfer, in a first direction, a carrier in which substrates are stored, an upper interface unit configured to move the transfer unit, a lower interface unit configured to receive the carrier from the transfer unit, and a controller configured to control the upper interface unit and the lower interface unit integrally such that the transfer unit and the carrier move in the first direction at the same time.

Abstract: A hoist apparatus includes branch guide rails with a branch point, the branch point defining a branching point between first and second traveling rails, and the branch guide rails including first guide rails having a cross-section in a first direction, and second guide rails having a cross-section in a second direction and connected to the first guide rails, and a traveling unit configured to travel along the branch guide rails, the traveling unit including first auxiliary wheels configured to roll and contact a first side of the second guide rails.

Abstract: A hoist apparatus includes branch guide rails with a branch point, the branch point defining a branching point between first and second traveling rails, and the branch guide rails including first guide rails having a cross-section in a first direction, and second guide rails having a cross-section in a second direction and connected to the first guide rails, and a traveling unit configured to travel along the branch guide rails, the traveling unit including first auxiliary wheels configured to roll and contact a first side of the second guide rails.

Abstract: A telescopic shaft including a male shaft including a plurality of first splines formed on an outer circumferential surface in an axial direction and a fixing groove and a derail prevention protrusion which are formed on outer circumferential surfaces at one end and a middle portion of the male shaft in a radius direction, a female shaft including a hollow and a plurality of second splines formed on an inner circumferential surface of the hollow corresponding to the plurality of first splines, a plurality of balls disposed between grooves of the plurality of first splines and grooves of the plurality of second splines, a leaf spring having a plate shape and inserted into the plurality of first spline grooves, and a fixing ring connected to the fixing groove and surrounding one end of the leaf spring to prevent the leaf spring from derailing.

Abstract: A panel spacer and a dishwasher using the panel spacer are provided. The dishwasher has a door and a control panel located a predetermined distance from the door. The panel spacer includes a spacer cover installed between the door and the control panel, and at least one spacer body coupled to the spacer cover. The spacer body fills a gap between the door and the control panel together with the spacer cover.

Abstract: Provided is a telescopic shaft. The telescopic shaft includes a male shaft including a plurality of first splines formed on an outer circumferential surface in an axial direction and a fixing groove and a derail prevention protrusion which are formed on outer circumferential surfaces at one end and a middle portion of the male shaft in a radius direction, a female shaft including a hollow and a plurality of second splines formed on an inner circumferential surface of the hollow corresponding to the plurality of first splines, a plurality of balls disposed between grooves of the plurality of first splines and grooves of the plurality of second splines, a leaf spring having a plate shape and inserted into the plurality of first spline grooves, and a fixing ring connected to the fixing groove and surrounding one end of the leaf spring to prevent the leaf spring from derailing.

Abstract: A panel spacer and a dishwasher using the panel spacer are provided. The dishwasher has a door and a control panel located a predetermined distance from the door. The panel spacer includes a spacer cover installed between the door and the control panel, and at least one spacer body coupled to the spacer cover. The spacer body fills a gap between the door and the control panel together with the spacer cover.