| 摘要 |
PROBLEM TO BE SOLVED: To provide a car body frame of a small vehicle capable of reinforcing rigidity while easily filling a filling material leaving no space regardless of a shape of a hollow part. SOLUTION: A down frame 13 of a motorcycle 10 is furnished with a plurality of hollow chambers 51 to 53, the second hollow chamber 52 out of these hollow chambers 51 to 53 is made into a liquid filling chamber 64, a first bulkhead 54 to partition the liquid filling chamber 64 and the adjoining first hollow chamber 51 is furnished with a pressure release valve 61 and the third hollow chamber 53 is furnished with a high pressure tank 56, and liquid 62 is pressurized in the high pressure tank 56 and made into high pressure liquid 62A after it is filled in the liquid filling chamber 64, and flexural rigidity of the down frame 13 is improved. COPYRIGHT: (C)2007,JPO&INPIT
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