A brake device includes: a damper; an advancing and retreating member; a support section; and wedge members. The support section is provided on an opposite side to the wedge members with respect to the advancing and retreating member, and is capable of supporting the advancing and retreating member on an application side in a drive direction. On one of the support section and the advancing and retreating member, there is provided a raised strip section which extends in a braking direction. On the other of the support section and the advancing and retreating member, there is provided a groove section which restricts movement of the raised strip section towards a release side in the drive direction, and restricts movement of the raised strip section to both sides in a widthwise direction orthogonal to the drive direction and the braking direction.