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Patent Searching and Data


Title:
DIAPHRAGM VACUUM PUMP
Document Type and Number:
Japanese Patent JP2015203311
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a diaphragm vacuum pump for improving an exhaust amount and ultimate vacuum while reducing the size of a device.SOLUTION: A diaphragm vacuum pump unit 11a is formed including a cam shaft 12a, a crank mechanism 13 for operating with the rotation of the cam shaft 12a, a connecting member 14 to be reciprocated in the horizontal direction by the crank mechanism 13, diaphragms 15, 16 mounted at both ends of the connecting member 14, a pair of pump chambers 17, 18 having capacities to be expanded/contracted by the operation of the diaphragms 15, 16, respectively, intake passages and exhaust passages each communicated with the pump chambers 17, 18, intake side check valves, and exhaust side check valves. The plurality of diaphragm vacuum pump units are vertically stacked one on top of another in stages, the cam shafts of the vertically adjacent diaphragm vacuum pump units are connected to each other via a toothed belt 2, and the cam shaft 12a of one diaphragm vacuum pump unit 11a is connected to a motor 12.

Inventors:
ARIGA SHINICHI
Application Number:
JP2014081533A
Publication Date:
November 16, 2015
Filing Date:
April 11, 2014
Export Citation:
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Assignee:
TOKYO RIKAKIKAI KK
International Classes:
F04B45/04
Domestic Patent References:
JP2006299897A2006-11-02
JPS61106988A1986-05-24
Attorney, Agent or Firm:
Kazuhiko Kido
Yoshihiko Kido