Rodless cylinder
AssigneeShoketsu Kinzoku Kogyo Kabushiki Kaisha
InventorMichikazu Miyamoto
Life of this patent
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Abstract
A rodless cylinder having a piston and an operation member slidable along the outer circumferential surface of a cylinder tube, each mounted with permanent magnets, and adapted to move the operation member along the cylinder tube by utilizing the attraction force between these permanent magnets, in which a plurality of individual magnets disposed axially to the cylinder in each of driving and driven magnet rows are arranged such that identical poles of the individual magnets are in adjacent to each other, and both of the driving and driven magnet rows are arranged such that the different poles of the individual magnets in each of the magnet rows are opposed to each other can provide a greater attraction force between the magnet rows with no changes in the size of the magnet and thereby reduce the size of the entire apparatus.
Claims7
A rodless cylinder, in which a driving member driven within a cylinder in the axial direction by the pressure of a fluid is constituted by mounting a driving magnet row to a piston sliding in said cylinder and a driven member disposed to the outer circumference of said cylinder axially slidably is mounted with a driven magnet row, wherein a plurality of individual magnets disposed axially to the cylinder in each of said magnet rows are arranged such that the identical poles of said individual magnets are adjacent to each other, and each of said magnet rows are arranged such that the different poles of said individual magnets are opposed to each other.
A rodless cylinder having a cylinder, a driving member which is assembled with a piston and a driving magnet row slidably disposed in said cylinder and movable therein by a pressurized fluid along the axial direction of said cylinder, and a driven member which has a driven magnet row surrounding the outer periphery of said cylinder, each of said driving and driven magnet rows comprising a plurality of individual permanent magnets juxtaposed along the cylinder axis, characterized in that axially adjacent pairs of permanent magnets in each row are arranged to face identical poles in the axially adjacent magnets, thereby turning lines of magnetic force substantially perpendicularly to the cylinder axis, while radially opposed pairs of magnets are arranged to face different poles, thereby preventing independent movements of said rows, whereby said driven member stably follows the movement of said driving member.
Dependencies are inferred from the claim text.