| 摘要 |
PURPOSE:To alleviate fatigue of hand and arm and prevent occurrence of stiffness in the shoulder and induration in the finger by mounting a first ring on an axis of a writing tool, keeping an annular part of a holder on the upper side of the ring in an idly engaged state, and transferring a writing pressure given to a member to be grasped of the holder by a palm to the axis of the writing tool through the annular part and the first ring. CONSTITUTION:A first ring 2 having an inner diameter which can be engaged fast with a writing tool 1 and a peripheral shape larger than a cross section of the writing tool 1, which can be fixed at an optional position of the tool 1, is provided. An annular part 4 which can be engaged with the writing tool 1 idly and has an inner diameter slightly smaller than the outer diameter of the ring 2 and a member 6 which can be grasped by a palm relating to the annular part 4 are provided on a holder 3. The holder 3 is made to be able to idly engage with the writing tool 1 at a position higher than the ring 2. That is, a writing pressure to be applied in the direction of the axis of the writing tool is applied mainly by the palm. The role for writing letters is given to the thumb, the forefinger, and the middle finger, released from the role for keeping the writing tool stable. Thus, fatigue of hand and arm is alleviated. |
