Patent ID: 8454123

Claim:
An assembly comprising: a frame which includes a first wall and a second wall that are opposed to each other; a support shaft which is supported by the first wall and the second wall at two respective portions of the support shaft that are spaced from each other in an axial direction thereof; an elastic member which is supported by the support shaft; an engaging member which is supported by the support shaft at a side of the elastic member that is closer to the second wall, wherein the engaging member is slidable with respect to the support shaft in the axial direction thereof; and wherein the engaging member includes a first engaging portion in one of opposite sides thereof that is apart from the elastic member and the first engaging portion is slidable with respect to the support shaft in the axial direction thereof, wherein the first wall has a recessed portion which is formed in an inner side surface of the first wall that is opposed to the second wall, and the second wall has a second engaging portion which is engageable with the first engaging portion so as to determine a position of the engaging member relative to the second wall in at least one direction that is in parallel with a wall surface of the second wall, and a limit of movement of the engaging member in a direction away from the first wall; wherein the support shaft includes an insertion portion in one of opposite end portions thereof that can be fitted into the recessed portion; wherein the first engaging portion and the second engaging portion are engaged with each other at a position spaced apart from the support shaft in a state in which the insertion portion is fitted into the recessed portion and the elastic member is compressed by the engaging member; wherein the engaging member includes a first connecting portion as the first engaging portion, the second wall includes a cutout which is formed from one of opposite end edges of the second wall toward a center thereof and a second connecting portion as the second engaging portion that is provided in the vicinity of the cutout, and the support shaft includes an engaging groove; and wherein, in a state in which the engaging groove and an edge portion of the cutout are engaged with each other, the first connecting portion and the second connecting portion are connected with each other.