| 摘要 |
PROBLEM TO BE SOLVED: To vary a support angle of a roller member to a handle, and stably maintain the support angle. ! SOLUTION: A first shaft 2 with a roller member 1 attached, and a second shaft 4 fixed to a handle 5 are connected by an angle variable connector 3. The angle variable connector includes: a first joint which has a connection adjusting part with a first uneven surface and to which the first shaft is fixed; a second joint which has a connection adjusting part with a second uneven surface and to which the second shaft is fixed; and a coupling member which couples the connection adjusting parts mutually with the first and second uneven surfaces engaged, and makes relative rotation of the first and second joints impossible. In a state that the coupling member is loosened and engagement of the first and second uneven surfaces is released, an angle formed by the first and second shafts is variable by relatively rotating the first and second joints and adjusting a relative angle of the engagement |
