| 摘要 |
PROBLEM TO BE SOLVED: To easily pull out a pair of right and left swing arms from a table when the swing arms are not used, and to easily set the swing arms. SOLUTION: This swing arm attaching/detaching device X has a shaft receiving member 3 with vertical shaft holes 16, 16 penetratingly fitted on rotary shafts 17, 17 of the swing arms 4, 4 turning along the upper face of the table; a swing arm locking mechanism Y with opening/closing lock plates 21, 21 including rotary shaft-fitted parts 23, 23 respectively corresponding to the vertical shaft holes 16, 16, provided in the shaft receiving member 3 through support parts 19, 19; and a lock release means Z with lock release rods 31, 31 opening the opening/closing lock plates 21, 21 against spring force of lock springs 22, 22 connecting the opening/closing lock plates 21, 21 when stepping on a stepping plate 30 against spring force of return springs 32, 32, provided in the shaft receiving member 3.
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