| 摘要 |
PURPOSE:To enable a decrease of rigidity to be prevented while workability is ensured in an opening part, by providing the opening part in a side surface part of a leading arm bracket and mounting a floor bracket to a peripheral location of the opening part. CONSTITUTION:A leading arm bracket 7, which is mounted to upper and bottom surfaces 9, 11 of a side member 8, supports a leading arm 15. Said leading arm bracket 7 mounts a floor bracket 19 to its side surface part 10, having an opening part 13, and the floor bracket 19, which mounts by welding its upper part mounting piece 22 to an upper surface part 10 in a position just above the opening part 13 while the both side part mounting pieces 23, 24 to both side positions of the opening part 13, reinforces an upper piece 26 of the opening part 13 and its right and lift sides 27, 28. In this way, external force, applied from the leading arm in the lengthwise direction, can be surely received and stopped while workability by the opening part is ensured.
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