JOINT STRUCTURE OF CAR WASHING MACHINE

To provide a joint structure for connecting a brush drive shaft provided on a body side of a car washing machine and a shaft of a washing brush, of which a structure is simplified, and in which breakage of the brush shaft can be avoided as much as possible even if an unnatural force is applied due to decentration or the like which occurs between the brush drive shaft and the brush shaft.SOLUTION: A shaft coupling 40, which fixes a brush shaft 10 and a brush drive shaft 35, is configured from integrally formed boss part 40a and clamp hub part 40b. The boss part has a cylindrical shape which is internally fitted to an end part of the brush shaft, and has a bolt hole 41 for fixation on an outer peripheral surface of such a cylinder. The clamp hub part 40b comprises a clamp mechanism. The brush drive shaft 35 is inserted in a shaft hole 43, and a clamp bolt 47 mounted in a clamp bolt hole 46 is screwed therein, whereby a groove width of a split groove 45 is reduced, and the brush drive shaft 35 is clamped and held. Thus, the coupling shaft 40 is configured from one component, decentration of the shaft is prevented as much as possible, and even if an unnatural load is applied to the shaft, slip is generated on the clamp hub part thereby preventing breakage accident of the brush shaft.SELECTED DRAWING: Figure 6 【課題】洗車機の本体側に備えるブラシ駆動軸と洗浄ブラシの軸とを接続する継手構造において、その構造を簡略化すると共に、ブラシ駆動軸とブラシ軸との間に発生する偏心等により不自然な力が加わった場合にも、ブラシ軸の破損を極力回避することができる継手構造を提供する。【解決手段】ブラシ軸１０とブラシ駆動軸３５とを固定する軸継手４０を一体に形成するボス部４０ａとクランプハブ部４０ｂとで構成する。ボス部はブラシ軸の端部に内嵌する円筒形状を備え、円筒の外周面に固定用ボルト孔４１を有している。クランプハブ部４０ｂはクランプ機構を備えており、軸孔４３にブラシ駆動軸３５を挿通して、クランプボルト孔４６に装着したクランプボルト４７をねじ込むことにより割り溝４５の溝幅が狭まってブラシ駆動軸３５がクランプ保持される。これにより、軸継手４０を一部材で構成し、軸の偏心を極力防ぐと共に軸に不自然な負荷が加わった場合にもクランプハブ部に滑りを発生させてブラシ軸の破損事故を防ぐ。【選択図】図６