A furniture part assembly includes a first furniture part, a second furniture part, and a vibration detection device. The second furniture part is movable with respect to the first furniture part. The vibration detection device is arranged on one of the first furniture part and the second furniture part and includes a linking member. When a force is applied to the vibration detection device, the linking member is brought from a first state to a second state to prevent the second furniture part from moving with respect to the first furniture part in a certain direction.