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Patent Searching and Data


Title:
FLUID CIRCUIT FOR AIR CYLINDER
Document Type and Number:
WIPO Patent Application WO/2019/188127
Kind Code:
A1
Abstract:
An air cylinder fluid circuit (20) which is divided by a piston (38) into a first air chamber (42) and a second air chamber (44) is provided with: a changeover valve (30); a first air flow channel (24) disposed between the first air chamber and the changeover valve; a second air flow channel (26) disposed between the second air chamber and the changeover valve; a bypass flow channel (28) for connecting a midway point of the first air flow channel and a midway point of the second air flow channel; and a pilot check valve (48) and a check valve (46) disposed within the bypass flow channel. The check valve allows air to flow from the second air chamber toward the first air chamber while blocking an air flow from the first air chamber toward the second air chamber. The pilot check valve allows air to flow from the first air chamber toward the second air chamber, but blocks air flow from the second air chamber toward the first air chamber when pilot pressure is not exerted.

Inventors:
TAKADA Yoshiyuki (14-1 Sotokanda 4-chome, Chiyoda-k, Tokyo 21, 〒1010021, JP)
ASAHARA Hiroyuki (TSUKUBA TECHNICAL CENTER 2-2, Kinunodai 4-chome, Tsukubamirai-sh, Ibaraki 93, 〒3002493, JP)
MONDEN Kengo (TSUKUBA TECHNICAL CENTER 2-2, Kinunodai 4-chome, Tsukubamirai-sh, Ibaraki 93, 〒3002493, JP)
SHINJO Naoki (TSUKUBA TECHNICAL CENTER 2-2, Kinunodai 4-chome, Tsukubamirai-sh, Ibaraki 93, 〒3002493, JP)
NAGURA Seiichi (TSUKUBA TECHNICAL CENTER 2-2, Kinunodai 4-chome, Tsukubamirai-sh, Ibaraki 93, 〒3002493, JP)
SOMEYA Kazutaka (TSUKUBA TECHNICAL CENTER 2-2, Kinunodai 4-chome, Tsukubamirai-sh, Ibaraki 93, 〒3002493, JP)
KAZAMA Akihiro (TSUKUBA TECHNICAL CENTER 2-2, Kinunodai 4-chome, Tsukubamirai-sh, Ibaraki 93, 〒3002493, JP)
ONUKI Kenta (TSUKUBA TECHNICAL CENTER 2-2, Kinunodai 4-chome, Tsukubamirai-sh, Ibaraki 93, 〒3002493, JP)
Application Number:
JP2019/009377
Publication Date:
October 03, 2019
Filing Date:
March 08, 2019
Export Citation:
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Assignee:
SMC CORPORATION (14-1, Sotokanda 4-chome Chiyoda-k, Tokyo 21, 〒1010021, JP)
International Classes:
F15B11/06; F15B11/02; F15B11/024; F15B11/044; F15B11/064; F15B15/14
Foreign References:
JPS5634103U1981-04-03
JPS5754626A1982-04-01
JPS5242506U1977-03-26
JPH0348006A1991-03-01
JPH02266103A1990-10-30
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (Shinjuku Maynds Tower 16F, 1-1 Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
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