| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiper device of construction machinery capable of expanding an upper wiping region of a front window without damaging a lower field of sight at either of the right or left side of the front window. SOLUTION: This wiper device of a construction machinery comprises a wiper blade 1 for wiping a front window 10 of an operator room and a wiper arm 2 driven to be oscillated. There are provided an auxiliary wiper blade 1a for wiping the front window 10 together with the wiper blade 1; a plurality of blade links 5a, 5b for connecting both wiper blades 1, 1a; and a link slanting arm 6 having its base part eccentrically displaced against the wiper arm 1, pivotally attached, having its extremity end rotatably attached to the blade link 5b and for inclining the blade links 5a, 5b when the wiper arm 1 is oscillated. The auxiliary wiper blade 1a wipes the upper side of the front window 10 than the wiper blade 1 at a process of oscillating the wiper arm 2. COPYRIGHT: (C)2004,JPO&NCIPI
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