Patent ID: 9042771
Filing Date: 2015-05-26
Classification: G03G,H04N

Abstract:
1. An attachment structure for an operation panel unit, comprising: an operation panel unit having a plurality of keys operated by a user and comprising an operation panel frame to which the plurality of keys are attachable in a row and which comprises a plurality of operation panel side projections are adjacent to an end pair of the plurality of keys which is located at both ends of the row; a main body to which the operation panel unit is attached; and an outer covering that is attached to the main body so as to cover the operation panel unit, the outer covering comprising a plurality of covering side key holes through which the plurality of keys are insertable with allowance and also comprising a plurality of covering side projections arranged adjacent to the covering side key holes, an end pair of the covering side projections corresponding to the plurality of operation panel side projections; wherein a first key of the end pair of the plurality of keys is configured to be substantially circular and a second key thereof is configured to be substantially rectangular, wherein a first key hole of the plurality of covering side key holes is configured to be substantially circular corresponding to the first key and a second key hole thereof is configured to be substantially rectangular corresponding to the second key, wherein a first projection of the plurality of covering side projections is configured to be substantially annular corresponding to the first key hole and a second projection thereof is configured to be in a substantially rectangular frame corresponding to the second key hole, wherein a first projection of the plurality of operation panel side projections which engages with the first projection of the plurality of covering side projections is configured to be substantially annular and a second projection thereof which engages with the second projection of the plurality of covering side projections is configured to be a pair of rectilinear members, wherein the operation panel unit is attached to the main body in such a way that the operation panel unit is slidable with respect to the main body, in a direction intersecting an attaching direction of the outer covering to the main body, and wherein, when the outer covering is attached to the main body in a state in which the operation panel unit is attached to the main body, the first projection and the second projection of the plurality of operation panel side projections engage with the first projection and the second projection of the plurality of covering side projections, such that sliding of the operation panel unit is restricted.