A brake device including a brake unit; a contact device engageable by the brake unit and movable relative to the brake unit, wherein the brake unit includes at least one activation device and at least one brake member that includes a transmission member and a brake shoe that is pivotably supported in a pivot bearing at an end of the at least one brake member, wherein the at least one activation device engages the transmission member to move the at least one brake member towards the contact device until the brake shoe contacts the contact device in an activation position of the at least one brake member and the brake shoe, wherein the pivot bearing is arranged at the at least one brake member so that the pivot bearing is movable towards the contact device together with the transmission member.

An operating rod is movable in an axial direction relative to an axle between a wheel lock position, in which a wheel lock member is positioned at the engaging position, and a wheel lock release position, in which the wheel lock member is allowed to move to the release position. The operating rod is pushed from the wheel lock release position toward the wheel lock position by an elastic force of the first elastic member and is movable from the wheel lock position to the wheel lock release position by a pushing force applied by a user. The stopper member engages with the operating rod when the operating rod is positioned in the wheel lock release position and retains the operating rod at the wheel lock release position against the elastic force of the first elastic member .