| 摘要 |
PURPOSE:To improve the work efficiency by fitting two plain brake bars with their preparation by forming a pair of brake bars symmetrically in the right and left. CONSTITUTION:Brake bars 14, 14 are in symmetric shape both the right and left, and the upper and lower respectively, of about V shape individually and the two tip parts 14a, 14b thereof are in the same shape. A recessed part is formed from the upper and lower both sides between the tip parts 14a, 14b and shaft part 14c. Due to the brake bar becoming a single kind the work efficiency is increased and the metal die for forming does with one kind, and the production cost is reduced.
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