Mounting structure for mounting an instrument on a supporting member of a motor vehicle

Claim 1

A mounting structure for securing a casing of an instrument on a periphery of an opening formed in a board member of a motor vehicle, comprising: projections formed on the casing so as to abut on an outside of said periphery when the casing is inserted in an inside space behind the board member passing through the opening; a front side supporting member and a rear side supporting member formed on the casing; a screw rotatably supported in the casing by said supporting members; a movable member engaged with the screw and provided to be moved along the screw by rotating the screw; and a clamping member having an engaging portion disposed between said rear side supporting member and said movable member and axially slidably mounted on the screw and pivotably engaged thereon so that the clamping member may be pivoted in a plane including an axis of the screw, a clamping portion which is provided to be projected from the casing as the clamping member pivots in said plane, arms provided to be engaged with the movable member to cause an axial movement and pivoting of the clamping member, and clamping portion provided to be abutted on an inside wall of the board member when the clamping member is pivoted and axially moved, whereby clamping the board member together with said projections.