| 摘要 |
An auxiliary support to be installed onto a chair armrest is disclosed. The auxiliary support includes a first adjusting arm that is able to pivot up and down and has one end formed as a rotating end that is vertically connected to a connecting end of the armrest, a second adjusting arm that is able to pivot up and down and forward and backward and has one end formed as a rotating end that is transversely connected to a connecting end at an opposite end of the first adjusting arm, and a supporting tray that is connected to an opposite end of the second adjusting arm and is adjustably inclinable for supporting a portable device (e.g. a tablet computer or a book). Thereby, a user sitting in the chair can put the portable device on the auxiliary support and operate it comfortably.
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