An assembly provided with a steering shaft assembly includes a first member having a first member outer surface that extends between a first member first end and a first member second end along an axis. The steering shaft assembly also includes a second member having a second member inner surface that extends between a second member first end and a second member second end along the axis, the first member first end arranged to be received within the second member second end. The steering shaft assembly further includes roller element assembly disposed between the first member outer surface and the second member inner surface.

Disclosed is an insert assembly inserted in a gap region provided in a panel to fill the gap region, the insert assembly comprising a body unit covering the gap region not to be exposed to the outside, an insert unit extended from the body unit and inserted in the gap region, and a hook unit extended a preset distance from the insert unit toward the body unit, the hook unit comprising one end connected to the insert unit and the other end provided as a free end, wherein the body unit, the insert unit and the hook unit are integrally formed with each other as one body.

A steering shaft assembly includes a first member and a second member, each having an inner surface and an outer surface, and each extending between a first end and a second end, the first member first end arranged to be received within the second member such that the second member inner surface is disposed about a portion of the first member outer surface. The assembly further includes a shaft extending from a third member, the shaft extending into the first member second end along the axis. The assembly yet further includes a roller element assembly disposed between the first member outer surface and the second member inner surface. The assembly also includes a pin extending through an opening of the second member, an opening of the first member, and an opening of the roller element assembly.

An image forming apparatus includes a frame in which a carriage configured to reciprocate along a predetermined direction is disposed, and a unit disposed to be openable with respect to the frame. A first engaging portion is formed on the image forming apparatus. The image forming apparatus is capable of restricting a movement of the carriage at least in the predetermined direction with use of a securing component including a second engaging portion engageable with the first engaging portion. When the securing component is attached to the carriage, and then the unit is closed with the first engaging portion and the second engaging portion engaging with each other, the securing component is sandwiched and fixed between the frame and the unit.

A multipurpose protective cap for a transmission prior to and during assembly with a drive shaft has a base portion having a cylindrical cross-section of a first inner diameter. The base portion comprises a side wall defining the cylindrical cross-section and having an outer edge and an inner edge, and a membrane spanning the cylindrical cross-section of the base portion at the outer edge of the side wall. An insertion portion extends from the base portion opposite the outer edge, the insertion portion having a cylindrical cross-section of a second inner diameter, the second inner diameter smaller than the first inner diameter. A contamination removal portion is formed in an interior surface of the insertion portion and configured to remove debris as the drive shaft passes through the insertion portion. A handle extends from the side wall of the base portion.