| 摘要 |
According to an embodiment of the present invention, a dishwasher comprises: a tub; an injection arm which injects washing water to a target; a sump installed in a bottom surface of the tub to receive the washing water therein, supplying the washing water to the injection arm; an arm holder fixated to the injection arm to support the injection arm, and installed in the sump to be rotated; a fixed gear part fixated to an inner side of the tub, having gear teeth on an outer surface; a rotary gear part installed in the injection arm to be rotated, and engaged with the gear teeth of the fixed gear part; and a link member connected to the rotary gear part and the injection arm, wherein the injection arm includes a main arm which has an arm holder coupling part connected to the arm holder and a pair of arms extended from a center of the arm holder coupling part, and a pair of auxiliary arms formed in the main arm to be rotated and extended from the center of the arm holder coupling part wherein the rotary gear part is engaged with the gear teeth of the fixed gear part to be rotated by the rotation of the main arm, wherein the link member is moved by the rotation of the rotary gear part to push and rotate auxiliary arms respectively. As such, the present invention improves in varying an injection angle of washing water using the main arm and the auxiliary arms installed in the main arm to be rotated, and rotates the main arm without a separate drive device. |
