A conveying device comprising: (a) a conveying passage which comprises a pair of sidewall portions arranged opposite to each other, a first protruding portion provided on each of the sidewall portions and protruding towards each of the other sidewall portions ; (b) a carrier which comprises a holder side member ; (c) a spirally-shaped spiral member which is arranged in a manner extending along the conveying passage , the spiral member causing between the spiral member and the holder side member a first force which acts in a direction away from the holder side member , or a second force which acts to draw in the holder side member ; and (d) a rotary unit which rotates the spiral member axis-wise thereof (e) wherein the conveying passage comprises a partition wall portion provided on the first protruding portion of both of the sidewall portions in a manner covering a gap (S) between the first protruding portions to partition one side from the other side bordering the first protruding portion , (f) the spirally-shaped spiral member is arranged lower than the partition wall portion between the sidewall portions ; (g) the carrier is arranged on the partition wall portion and is conveyed on the partition wall portion ; characterized in that , (h) the side wall portions comprise second protruding portions provided on each of the sidewall portions and protruding above the partition wall portion to prevent the carrier from falling off the partition wall portion ; (i) the carrier comprises a wheel which comes in contact with an upper surface of the partition wall portion ; and (j) the spirally-shaped spiral member is formed from steel as the chief material and the holder side member is a magnet. (a) a conveying passage which comprises a pair of sidewall portions arranged opposite to each other, a first protruding portion provided on each of the sidewall portions and protruding towards each of the other sidewall portions ; (b) a carrier which comprises a holder side member ; (c) a spirally-shaped spiral member which is arranged in a manner extending along the conveying passage , the spiral member causing between the spiral member and the holder side member a first force which acts in a direction away from the holder side member , or a second force which acts to draw in the holder side member ; and (d) a rotary unit which rotates the spiral member axis-wise thereof (e) wherein the conveying passage comprises a partition wall portion provided on the first protruding portion of both of the sidewall portions in a manner covering a gap (S) between the first protruding portions to partition one side from the other side bordering the first protruding portion , (f) the spirally-shaped spiral member is arranged lower than the partition wall portion between the sidewall portions ; (g) the carrier is arranged on the partition wall portion and is conveyed on the partition wall portion ; characterized in that , (h) the side wall portions comprise second protruding portions provided on each of the sidewall portions and protruding above the partition wall portion to prevent the carrier from falling off the partition wall portion ; (i) the carrier comprises a wheel which comes in contact with an upper surface of the partition wall portion ; and (j) the spirally-shaped spiral member is formed from steel as the chief material and the holder side member is a magnet. <EOS>