| 摘要 |
PROBLEM TO BE SOLVED: To choose a variety of materials having a vibration absorbing property and different hardness, choose the size of a support plate, respond to a difference in the strength of support, and facilitate mounting. SOLUTION: The lumber support includes a support plate 11 having a pair of band holes 14 and 14, a pair of brackets 12 and 12 having a pair of spring pinching ribs 15 and 15 and the pair of band holes 14 and 14, a pair of ratchet cable straps 13 and 13 binding the right and left ends of the support plate 11 to prescribed positions of the seat springs 24 of a seat back 22, using the brackets 12 and 12.
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