Title:
ダイヤフラムポンプ
Document Type and Number:
Japanese Patent JP6920720
Kind Code:
B2
Abstract:
A diaphragm pump (1) includes a driving body (33) configured to convert a rotation of a crank body (31) into a reciprocal motion and transmit the reciprocal motion to a deformed portion (11) of a diaphragm (7). The driving body (33) includes a shaft portion (36) including a shaft hole (43) in which a driving shaft (32) fixed to the crank body is rotatably fitted. The shaft hole is a non-through hole including an opening-side end (43a) and a closed-side end (43b) each including an inner peripheral surface that contacts the driving shaft over a whole circumference. The shaft portion includes an oil storage (44) opening to a region between the opening-side end and the closed-side end of the shaft hole.
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| JP2012036789 | ELECTROMAGNETIC VIBRATION TYPE PUMP |
Inventors:
Akira Inoue
Application Number:
JP2017120135A
Publication Date:
August 18, 2021
Filing Date:
June 20, 2017
Export Citation:
Assignee:
Oken Seiko Co., Ltd.
International Classes:
F04B45/047; F04B39/02
Domestic Patent References:
| JP2015218581A | ||||
| JP5202928A | ||||
| JP2004263596A | ||||
| JP2014196679A |
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa