MAGNET-TYPE RODLESS CYLINDER

摘要

A magnet-type rodless cylinder (1) is provided with a guide mechanism having an outer rolling groove (26), an inner rolling groove (29), a cylinder body (32), a pair of connection paths (34) for connecting an area between the outer rolling groove and the inner rolling groove with the cylinder body, and a plurality of steel bails (36) that can roll within an endless circuit (35) formed of the cylinder body, the connection paths and the area between the outer rolling groove and the inner rolling groove, wherein the connection paths (34) are formed at a pair of inner members, i.e. return caps (33), disposed on the inner sides of metal end plates (12) that are attached to the front and rear ends in the sliding direction of a sliding body (4).

主权项

1. A magnet-type rodless cylinder comprising:
a base with a U-shaped cross-section which is provided with a left and right pair of side wall parts; a cylinder tube which holds a piston, which cylinder tube is provided in said base parallel to side wall parts of said base; a slide member which can slide along said cylinder tube and is provided at an outer circumferential surface of said cylinder tube, which slide member is integrally joined with said piston by a magnetic coupling force and can move tracking movement of said piston; and guide mechanisms for said slide member which are provided between said pair of side wall parts and said slide member, wherein each of said guide mechanisms includes an outside rolling groove which is provided in said side wall part and which is parallel with said cylinder tube, an inside rolling groove which is provided in said slide member facing the outside rolling groove, a guide path which is parallel with said cylinder tube and provided at said slide member, a U-shaped pair of connecting paths which connect the space between said outside rolling groove and said inside rolling groove and said guide path, and a plurality of rollers which can roll inside an endless circulating path which is formed by the space between said outside rolling groove and said inside rolling groove, said guide path, and said connecting paths, and wherein said connecting paths are formed with a pair of inside members which are arranged at insides of metal end plates which are attached to the front and back ends of said slide member in the slide direction.