Patent ID: 9090231
Filing Date: 2015-07-28
Classification: B60S

Abstract:
1. A wiper blade apparatus having a main lever which is formed of synthetic resin, the wiper blade apparatus comprising: a rotation shaft that is disposed at a center of the main lever, and formed to connect both sidewalls of the main lever; and a connector that is rotatably coupled to the rotation shaft, and formed to be detachable from the rotation shaft, wherein a first fool-proof assembly unit is formed at the rotation shaft, and restricts a range of a rotation angle of the connector that prevents misassembly of the connector; and a second fool-proof assembly unit is formed on a coupling unit of the connector and, in correspondence with the first fool-proof assembly unit, restricts a range of a rotation angle of the connector, wherein the first fool-proof assembly unit is formed to protrude from an outer circumferential surface of the rotation shaft, and extends for a certain angle along a circumferential direction of the rotation shaft, and the second fool-proof assembly unit is an accommodation groove that accommodates a protruding guide and is formed concave in an inner circumferential surface of the coupling unit, so that the protruding guide may rotate within a certain angle range when the protruding guide is accommodated in the accommodation groove, wherein the rotation shaft comprises an auxiliary groove that is comprised in a location which does not overlap with the protruding guide, and is formed concave in the outer circumferential surface of the rotation shaft, and the connector comprises an auxiliary protruding unit that is formed to protrude from an inner circumference surface of the coupling unit so that the connector is accommodated in the auxiliary groove.