To solve the problem of being extremely difficult since restriction is much, though a constitution is separately installed except for enlarging a pivot accordingly, since a pivot shaft supports strong force of a Z type from the arm side and the lever side only on the upper side and the lower side by the pivot, since generation of pressing force of a conventional window wiping device such as an operating and monitoring window of transport equipment such as a vehicle is relied mainly only on a spring.

The force of the Z type added to the pivot is substantially dispersed from the pivot vicinity till an application of the last time. Thus, the pivot itself is extremely reduced in partial reduction due to only coping with remaining vertical force and twisting force, and since rigidity of its surplus force is transferred to a cylindrical constitution, a cylindrical laminated type pivot for reducing an outward appearance change can be used.