Patent ID: 8118169

Claim:
A retainer provided to a substrate container containing a plurality of substrates, for retaining the plurality of substrates aligned and supported at regular intervals with a plate thickness direction in a vertical direction, the retainer comprising: a frame having a pair of vertical direction parts each extending in the vertical direction and a pair of horizontal direction parts each extending in a horizontal direction which intersects the pair of vertical direction parts; an elastic piece protruding inside from the vertical direction part and having a holding part configured to control a position of one of the plurality of substrates; a coupling piece extending in the vertical direction and having both ends thereof coupled to the horizontal direction parts; and a plurality of protruding parts protruding inside the substrate container from the coupling piece and having an inclined face formed to be inclined in a direction intersecting the one substrate and enabled to come into contact with a periphery of the one substrate, wherein the one substrate is disposed between one of the plurality of protruding parts and another of the plurality of protruding parts, adjacent to the one substrate in the vertical direction, the inclined face comprising: a first inclined face formed on an upper end of the one of the plurality of protruding parts and configured to come into contact with the one substrate; and a second inclined face formed on a lower end of the one of the plurality of protruding parts and configured to come into contact with another of the plurality of substrates, wherein the first inclined face and the second inclined face do not contact the plurality of substrates when the plurality of substrates are in a normal state, wherein the plurality of protruding parts are provided on both sides of the one substrate in the vertical direction, and wherein the plurality of protruding parts provided on both sides of the one substrate is disposed to form a space larger than a plate thickness of the substrate in the vertical direction.