PURPOSE: To permit the downward reversal position of a wiper blade to be varied in two stages by installing a turnable pin part for varying the locus of turn in two stages, onto a conversion mechanism which is equipped with a crank arm which converts the rotary movement of a motor to the reciprocative movement of a link rod.
CONSTITUTION: The revolution of a driving shaft 11 due to driving of a wiper motor is converted to the reciprocative movement of a link rod 10 through a crank arm 7 and a turnable pin part P4, and a wiper blade 30 is provided with sweeping operation. In such an apparatus, said turnable pin part P4 is constituted by incorporating in turnable ways, onto a crank pin 1 fixed at the outer edge of the crank arm 7, an eccentric bush 3 which is made of oil-immersed sintered metal and has an amount of eccentricity of ΔA and a lever 4 constituted of a steel plate for spring which is integrally formed with the bush 3 by a hook 4a. Said lever 4 is turned between the position shown in the figure in which a joint 15 is engaged into a hole 5 and the position is 180° turn in which the joint 15 is engaged into a hole 6, and thus the downward reversal position of the blade 30 can be varied in two stages L1 and L2.
MATSUOKA HIROSHI
TERABAYASHI GOSAKU
IIDA SABUROU
TOYOTA MOTOR CO LTD
| JPS5550812U | 1980-04-03 | |||
| JPS54102732A | 1979-08-13 |
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