| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the number of parts in a diaphragm pump. <P>SOLUTION: On the top surface of a crank 4 to which the output shaft 2a of a motor 2 is journaled, a ring shaped engagement groove 5 having a center at the output shaft 2a is provided. A drive shaft 9b is integrally formed on a drive body 7. A lower end portion 9c of the drive shaft 9b is engaged in the engagement groove 5 to incline the axis 9d. The crank 4 rotates to engage the engaging part provided in the engagement groove 5 with the lower end portion 9c, so that the drive shaft 9b rotates following the rotation of the crank 4 while the axis 9d changes in the inclination direction. Accordingly, a diaphragm section 12a attached to a drive element 7a of the drive body 7 moves vertically, to contract/expand a pump chamber 18, thereby causing a pumping action. <P>COPYRIGHT: (C)2013,JPO&INPIT |
