| 摘要 |
PURPOSE:To aim at the simplification of a joint structure, by setting up a boss part having two plane surfaces in parallel with a rotary shaft and a pair of joint members in a way of causing them to be opposed with each other. CONSTITUTION:A pair of joint members 1 and 1' are provided with each of two boss parts 2 and 2', and two plane surfaces 4 and 4' paralleled with shaft parts 3 and 3' of these joint members 1 and 1' are installed there, while spherical bosses 5 and 5', each of whom tip has a spherical surface, are installed in a center shaft. In addition, a holder 6 having four arms 7 in a radial manner is provided with a hole 8 in a circumferential direction, into which a rotor 9 is loosely fitted. Likewise, the central part of the holder 6 has two inner spherical guides 10 and 10' at both sides centering on each of points O' and O'' separating away as far as a fixed distance alpha, putting a center surface inclusive of these arms 7 in between. Centering on the holder 6, a pair of these joint members 1 and 1' are joined together from both left and right sides, and an exposed part from these arms 7 of the rotor 9 is sandwiched between plane surfaces 4 and 4' of these boss parts 2 and 2'. Doing like this, such a joint that is simple in its structure and less power loss is secured. |
