DOOR CLOSER

WIPO Patent Application WO/2023/004877

A1

A door closer, comprising a sleeve (4), an adjusting assembly (1), a first damping assembly (2), and a second damping assembly (3). The first damping assembly (2) and the second damping assembly (3) are mounted in the sleeve (4); the adjusting assembly (1) comprises a first adjusting member (11) and a second adjusting member (12); the first damping assembly (2) comprises a first elastic member (21); one end of the first elastic member (21) is connected to the surface of the first adjusting member (11); the first adjusting member (11) is fixed on a pivot (6); the first elastic member (21) is capable of rotating around the pivot (6); the second damping assembly (3) comprises a damping member (31); one end of the damping member (31) is hingedly connected to the second adjusting member (12); the second adjusting member (12) is fixed on the pivot (6); the damping member (31) is capable of rotating around the pivot (6) simultaneously with the first elastic member (21). The door closer can provide effective dampening, so that a pivot door (5) can be gently closed, and can also adjust the speeds of different processes of opening and closing the door, and use is convenient.

XIE WEI (CN)
WANG FUGEN (CN)
GUO FENG (CN)

PCT/CN2021/111372

February 02, 2023

August 08, 2021

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ARROW HOME GROUP CO LTD (CN)

E05F1/14

CN112431497A	2021-03-02
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CN201347703Y	2009-11-18
CN110566073A	2019-12-13
CN104074427A	2014-10-01
CN204283047U	2015-04-22
CN101135216A	2008-03-05
CN208830855U	2019-05-07
JP2003035065A	2003-02-07
GB775719A	1957-05-29
EP2873793A1	2015-05-20

SCIHEAD PATENT AGENT CO., LTD (CN)

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