Device for detecting assembly state of plastic part of reading lamp in front of ceiling

The utility model relates to a ceiling front reading lamp plastic part assembling state detection device which comprises an insert, the end face of the top end of the insert is provided with an installation position used for installing a front reading lamp plastic part, two opposite side walls of the insert are connected with first connecting plates, each first connecting plate is connected with a movable rod in a sliding mode in the vertical direction, and the movable rod is connected with a movable rod in a sliding mode. The outer wall of each movable rod is connected with a limiting part, the limiting parts are located above the first connecting plate, each movable rod is sleeved with a spring, the upper end and the lower end of the spring abut against the limiting part and the first connecting plate on the same side respectively, and the insert is connected with two proximity switches. The two proximity switches are respectively positioned below the two movable rods and are respectively and coaxially arra