Patent attributes
A backlash prevention tool is formed by provision of a C-shaped frame-like support portion installed to an engagement surface portion hollowed out and formed from a side wall surface of an adapter main body toward upper and lower wall surfaces, a come-off preventing locking piece protruded in a diagonally outer direction from a center side edge of the support portion so as to face to locking protrusions formed at the center of both side surface portions of the adapter main body, and backlash preventing locking pieces protruded in diagonally outer directions of respective side edges in both sides and upper and lower sides of the come-off preventing locking piece at the center of the support portion so as to come into pressure contact with respective sides of an inner side of an opening edge of an adapter attaching hole of a panel and are formed into a leaf spring.
