| 摘要 |
PURPOSE:To simplify assembling, by bending the opposite end sections of the upper face of a frame into U-shape then forming a wheel shaft fitting groove in the inside face and a shaft end section engaging means on the outside face thereby receiving a wheel shaft. CONSTITUTION:A wheel 3 is fixed to a wheel shaft 4 which is inserted into a supporting groove 5 in a frame 1. Here, the end section of the shaft 4 is fitted while riding across a projection 6 of the frame 1 under resilient state. Consequently, the shaft 4 is supported rotatably in the supporting groove 5 with upward motion thereof being blocked. With such arrangement, a wheel conveyor can be assembled as a sub-assembly where the wheel is fixed previously to the supporting shaft. As a result, number of parts can be reduced and assembling is simplified.
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