| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cylinder type valve device which can suppress the wear damage caused by wear etc. of a rotation transmission portion which transmits rotation from a drive shaft portion to a cylinder valve body, and can elongate the life of the valve device than ever before. <P>SOLUTION: The cylinder type valve device has a cylinder valve body 42, a valve case which fits in rotatably the cylinder valve body 42, a drive shaft portion 72 which rotary-drives the cylinder valve body 42, a rotation transmission portion which transmits the rotation of the drive shaft portion 72 to the cylinder valve body 42, and a retaining portion which retains the drive shaft portion 72, wherein the drive shaft portion 72 is provided with a penetration portion 115 which penetrates the inside of the cylinder valve body 42 from one end portion of the axial direction of a handle side to the other end portion of the opposite side in the axial direction, and is provided with notched portions 104-112 in the one side of the other end portion of the cylinder valve body 42 and the back end portion to which the penetration portion 115 corresponds, and is provided with engaging portions 116-124 in the other side, thereby constituting the rotation transmission portion. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
