Invention Grant
- Patent Title: Door opening and closing device
- Patent Title (中): 门打开和关闭装置
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Application No.: US13391536Application Date: 2010-05-14
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Publication No.: US08739468B2Publication Date: 2014-06-03
- Inventor: Koushi Yamaguchi , Kazuaki Kashiwaguma , Mitsuru Sugiura
- Applicant: Koushi Yamaguchi , Kazuaki Kashiwaguma , Mitsuru Sugiura
- Applicant Address: JP Tokyo
- Assignee: Sugatsune Kogyo Co., Ltd.
- Current Assignee: Sugatsune Kogyo Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2009-191099 20090820
- International Application: PCT/JP2010/058169 WO 20100514
- International Announcement: WO2011/021414 WO 20110224
- Main IPC: E05F1/00
- IPC: E05F1/00

Abstract:
Provided is a door opening and closing device wherein the device width can be made small and wherein the movement of a retraction arm can be stabilized. In a body case (102) which is slender and extends in one direction, there is provided an arm block (121) for a retraction arm (104) which rotates from the open state to the closed state. On one side of the body case (102), there is provided a first slider (134) which, being interlocked with the rotation of the arm block (121), makes linear movements in one direction. In the body case (102), there is provided an arm shaft (105) which serves as the center of rotation of the arm block (121). A second slider (131) which, being interlocked with the rotation of the arm block (121), makes linear movements in one direction, is provided opposite the first slider (134), in such a way as to have the arm shaft (105) held between the first and second sliders (134, 131). On one side of the body case (102), there is provided a force applying member (128) which applies force on the first slider (134) in one direction. On the opposite side of the body case (102), there is provided a damper which resists the linear movement of the second slider (131).
Public/Granted literature
- US20120317883A1 DOOR OPENING AND CLOSING DEVICE Public/Granted day:2012-12-20
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