| 摘要 |
PROBLEM TO BE SOLVED: To provide a paste ejecting device having a compact and simple mechanism, which can be maintained with an easy maintenance work. SOLUTION: In a pump mechanism for the paste ejecting device, a first space 37 and a second space 38 in which paste sucking/ejecting volume is variable, are formed in combination of a second rotary member 34 having two outer peripheral surfaces brought into slide contact with the inner peripheral surfaces of a fixing member 33 having two concentric inner peripheral surfaces of different diameters. Further, a first rotary member 32 for switching the port is arranged on the outer periphery of the member 33, and these members are coaxially disposed in a housing member 31 having third and fourth fixing ports 31b, 31c above and below the respective members. Thus, the compact and simple pump mechanism can be constituted, and the paste ejecting device capable of being maintained with an easy maintenance work can be realized. COPYRIGHT: (C)2004,JPO
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