| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a valve driving gear with no necessity for complicated and experiential know-how of high accurate screw work, center position aligning work of a valve element to an opening, etc., and also applicable to a three or four way valve. SOLUTION: A valve driving gear 1 has a body part 2 connected to an inflow pipe 5 for inflow of a fluid and to outflow pipes 6a, 6b for outflow of the fluid, valve elements 3a, 3b which can be operated in a prescribed range for opening/ closing openings 7a, 7b connected to the outflow pipes 6a, 6b of the body part 2, and a drive part 4 for driving the valve elements 3a, 3b. The drive part 4 has a cam member 11, provided with a cam surface having a protruded part for operating the valve elements 3a, 3b in a direction closing the openings 7a, 7b and a low surface part for operating the valve elements 3a, 3b in a direction opening the openings 7a, 7b, and a drive source 13 driving the cam member 11 rotated to operate the valve elements 3a, 3b by opposing the protruded part and the low surface part of the cam surface respectively to the valve elements 3a, 3b.</p> |
