A finger supporting structure (F) comprising a grip portion (49) and a finger supporter (T) formed thereto;
- said grip portion (49) being of an elongated bar shape and having adequate length and thickness for user's four fingers to wrap in one direction and the thumb in the opposite direction, said grip portion (49) being all or some part of a grasping member of an implement, and said grasping member being an elongated bar-shaped physical member of an implement for a user's hand to grasp to use the implement,
- said grip portion(49) having fore side (83), rear side (85), outer side (87) and inner side (81), said inner side (81) having thumb touching part (82) on which the thumb touches and finger touching part (84) on which the four fingers excluding the thumb touch, and the surfaces of the thumb touching part (82) and the surface of the part of the finger touching part (84) on which the index finger is placed being formed to have substantially the same surface level along the length of said grip portion (49),
- said finger supporter (T) being a laterally extending projection which is fixedly and rigidly formed on said inner side (81) of the grip portion (49) in one piece,
- said finger supporter (T) being so formed to be positioned at the place of the grip portion (49) on which the thumb touches the index finger that the finger supporter (T) may be placed between the thumb and index finger when a hand grasps the grip portion (49), said finger supporter (T) having upper side (51) and bottom side (52) to receive the thumb and the index finger, respectively, and having fore end part (57), rear end part (59), inner end part (53) and outer end part (55), and said inner end part (53) being integrally connected to said inner side (81) of the grip portion (49),
- said finger supporter (T) having adequate length and width, said length denoting the distance between the fore end part (57) and rear end part (59) and said width denoting the distance between the inner end part (53) and outer end part (55),
- said fore end part (57) and rear end part (59) of the finger supporter (T) being touched by the distal phalanx part of the thumb and the inner part of the thumb, respectively, said finger supporter (T) having moderate thickness to be placed between the thumb and index finger,
- the straight line between the fore end part (57) and rear end part (59) of the finger supporter (T) being angled to be inclined anticlockwise with respect to the longitudinal axis (X) of the grip portion (49), the straight line between the outer end part (55) and the inner end part (53) of the finger supporter (T) being substantially vertical to the surface of the grip portion (49), and
- said upper side (51) of the finger supporter (T) and the thumb touching part (82) of the inner side (81) to receive the thumb and said bottom side (52) of the finger supporter (T) and the finger touching part (84) of the inner side (81) to receive the index finger being so formed to have substantially equal or similar structure and disposition that the drawing force of the thumb and that of the four fingers may be concentrated to and encounter with each other at the finger supporter (T).