Coupler knuckle connecting piece for fixing piece installation

The coupler knuckle connecting piece for installing the fixing piece comprises a base and a locking piece arranged on the base, and one side of the base is concaved inwards to form a notch for the fixing piece to be connected in an inserted mode. The locking piece comprises a locking part matched with the base, and the locking part is connected to the base in a telescopic mode and located at the opening of the notch so that the locking part can form a first state and a second state. The coupler knuckle connecting piece is simple in structure, convenient to operate and easy to be matched with a fixing piece so that the fixing piece can be connected with the coupler knuckle connecting piece installed on the fixing piece, and then the assembling efficiency of the fixing piece and the coupler knuckle connecting piece is improved. 本实用新型所公开的一种固定件安装的钩舌连接件，包括基座以及设置于所述基座上的锁定件，所述基座的一侧内凹形成供固定件插接的缺口；所述锁定件包括与所述基座配合的锁定部，锁定部伸缩连接在所述基座上并位于所述缺口的开口处，以使所述锁定部形成第一状态和第二状态。本申请结构简单，操作方便，容易与固定件配合进而使得固定件与固定件安装的钩舌连接件连接，进而提高了两者之间的组装效率。