Abstract: In an interior of a cylinder tube of a fluid pressure cylinder, a piston unit is provided, which is displaced along an axial direction under the supply of a pressure fluid. The piston unit includes a disk shaped plate body, which is connected to one end of a piston rod, and a ring body connected to an outer edge portion of the plate body. The plate body is connected to the piston rod by plural second rivets, which are punched in an axial direction with respect to the piston rod.

Abstract: In a piston unit of a fluid pressure cylinder a plurality of magnets are disposed through holes provided in a ring body. The magnets are disposed in facing relation to detection sensors that are mounted on connecting rods, and are provided in the same quantity as the connecting rods. Further, a guide rod extending from a head cover to a rod cover is inserted through the interior of the ring body. When the piston unit is displaced along the cylinder tube, rotational displacement is restricted by the piston unit being displaced along the guide rod, whereby the magnets are retained to face toward the connecting rods at all times. Therefore, the position of the piston unit is detected by the detection sensors through the magnets.

Abstract: On inner wall surfaces of a head cover and a rod cover of a fluid pressure cylinder, respective pluralities of first and second spigot pins are installed to project out from the inner wall surfaces. The first and second spigot pins are disposed on circumferences of a predetermined diameter that internally contact or inscribe the cylinder tube. Further, when the cylinder tube is assembled with respect to the head cover and the rod cover, by the flange members of the first and second spigot pins inscribing the inner circumferential surface thereof, the cylinder tube is positioned and assembled coaxially with respect to the centers of the head cover and the rod cover.

Abstract: In a fluid pressure cylinder a piston unit, which is displaced along an axial direction under the supply of a pressure fluid, is disposed in an interior of a cylinder tube of the fluid pressure cylinder. The piston unit includes a disk shaped plate body connected to one end of a piston rod, and a ring body connected to an outer edge portion of the plate body. The ring body is connected together with the plate body by a plurality of third rivets that are punched in an axial direction with respect to the plate body.

Abstract: In a fluid pressure cylinder, a piston unit, which is displaced along an axial direction under the supply of a pressure fluid, is disposed in the interior of a cylinder tube of the fluid pressure cylinder. The piston unit includes a disk shaped plate body connected to one end of a piston rod, and a ring body connected to an outer edge portion of the plate body. The plate body is formed from an elastically deformable metal material, and by the plate body becoming elastically deformed and flexing when the ring body of the piston unit abuts against the head cover or the rod cover, shocks applied with respect to the piston unit are buffered.

Abstract: In an interior of a cylinder tube of a fluid pressure cylinder, a piston unit is displaced along an axial direction under the supply of a pressure fluid, and the piston unit is connected to one end of a piston rod. Further, a rod cover is disposed on another end of the cylinder tube, and in the center thereof, a cylindrical holder is provided that displaceably supports the piston rod. The holder is fixed integrally by a plurality of first rivets, in a state in which a flange member, which is expanded radially outward, abuts against an inner wall surface of the rod cover.

Abstract: The present invention relates to a fluidic cylinder. This fluidic cylinder is configured in such a manner that a piston unit is received in an axially displaceable manner within a cylinder tube formed in a rectangular cross-sectional shape. The piston unit has: a base body having the front end of a piston rod staked thereto; a wear ring having the base body received therein and having a magnet incorporated therein; and piston packing adjacent to the wear ring. The piston unit is integrally held at one end of the piston rod. The wear ring and the piston packing are formed in a rectangular cross-sectional shape corresponding to the rectangular cross-sectional shape of the cylinder tube and are provided rotatable relative to the piston rod.

Abstract: On inner wall surfaces of a head cover and a rod cover of a fluid pressure cylinder, respective pluralities of first and second spigot pins are installed to project out from the inner wall surfaces. The first and second spigot pins are disposed on circumferences of a predetermined diameter that internally contact or inscribe the cylinder tube. Further, when the cylinder tube is assembled with respect to the head cover and the rod cover, by the flange members of the first and second spigot pins inscribing the inner circumferential surface thereof, the cylinder tube is positioned and assembled coaxially with respect to the centers of the head cover and the rod cover.

Abstract: In an interior of a cylinder tube of a fluid pressure cylinder, a piston unit is provided, which is displaced along an axial direction under the supply of a pressure fluid. The piston unit includes a disk shaped plate body, which is connected to one end of a piston rod, and a ring body connected to an outer edge portion of the plate body. The plate body is connected to the piston rod by plural second rivets, which are punched in an axial direction with respect to the piston rod.

Abstract: In a fluid pressure cylinder, a piston unit, which is displaced along an axial direction under the supply of a pressure fluid, is disposed in the interior of a cylinder tube of the fluid pressure cylinder. The piston unit includes a disk shaped plate body connected to one end of a piston rod, and a ring body connected to an outer edge portion of the plate body. The plate body is formed from an elastically deformable metal material, and by the plate body becoming elastically deformed and flexing when the ring body of the piston unit abuts against the head cover or the rod cover, shocks applied with respect to the piston unit are buffered.

Abstract: In a fluid pressure cylinder a piston unit, which is displaced along an axial direction under the supply of a pressure fluid, is disposed in an interior of a cylinder tube of the fluid pressure cylinder. The piston unit includes a disk shaped plate body connected to one end of a piston rod, and a ring body connected to an outer edge portion of the plate body. The ring body is connected together with the plate body by a plurality of third rivets that are punched in an axial direction with respect to the plate body.

Abstract: In an interior of a cylinder tube of a fluid pressure cylinder, a piston unit is displaced along an axial direction under the supply of a pressure fluid, and the piston unit is connected to one end of a piston rod. Further, a rod cover is disposed on another end of the cylinder tube, and in the center thereof, a cylindrical holder is provided that displaceably supports the piston rod. The holder is fixed integrally by a plurality of first rivets, in a state in which a flange member, which is expanded radially outward, abuts against an inner wall surface of the rod cover.

Abstract: In a piston unit of a fluid pressure cylinder a plurality of magnets are disposed through holes provided in a ring body. The magnets are disposed in facing relation to detection sensors that are mounted on connecting rods, and are provided in the same quantity as the connecting rods. Further, a guide rod extending from a head cover to a rod cover is inserted through the interior of the ring body. When the piston unit is displaced along the cylinder tube, rotational displacement is restricted by the piston unit being displaced along the guide rod, whereby the magnets are retained to face toward the connecting rods at all times. Therefore, the position of the piston unit is detected by the detection sensors through the magnets.

Abstract: A fluid pressure apparatus includes a piston, and a packing provided on an outer circumference of the piston. The packing includes a support ring made of a low-friction material, and a ring-shaped seal member mounted to the support ring. When at least a certain amount of transverse load acts on the piston, an outer circumferential surface of the support ring abuts against an inner circumferential surface of the slide hole, whereby the piston is prevented from contacting with the inner circumferential surface of the slide hole.

Abstract: In a fluid pressure apparatus, a packing is constituted from an annular seal member made of an elastic rubber material, and support rings made of a material possessing low friction, which are mounted on an outer circumference of the seal member. The seal member includes, on an outer circumference thereof, a sealing projection, shoulder portions formed on both sides of the sealing projection, and concave grooves interposed between the shoulder portions and the sealing projection. The support rings include support surfaces on outer circumferences thereof, and engagement projections on inner circumferences thereof, such that by engagement of the projections in the concave grooves, the support rings are mounted on the seal member so as to surround outer circumferences of the shoulder portions.

Abstract: In a fluid pressure cylinder, a piston is displaced in an axial direction under the action of a pressure fluid. A circular protrusion, which projects toward the piston along an axial direction of the cylinder tube, is formed on an inner end surface of a collar member constituting part of the fluid pressure cylinder, a concavity, which can be fitted externally over the circular protrusion, is formed on the piston, and an annular groove is formed on an inner circumferential edge of an end plate. By the piston coming into contact with the end plate, a pressure receiving chamber is formed between the piston and the annular groove, together with an opening of a second port on an inner side of the cylinder tube being closed to a maximum of 90%.

Abstract: In a fluid pressure apparatus, a packing includes an annular seal member made of an elastic material, and support rings made of a low-friction material, which are mounted on an outer circumference of the seal member. The seal member includes, on an outer circumference thereof, a sealing projection that contacts an inner surface of the slide hole. The support rings are disposed on both sides of the sealing projection, and protrude beyond the seal member in the axial direction. Outer circumferential surfaces of the support rings always contact the inner circumferential surface of the slide hole. When a transverse load does not act on a piston as a partitioning member, the inner circumferential surfaces of the support rings do not contact the outer circumference of the piston. When a transverse load acts on the piston, the inner circumferential surfaces of the support rings contact the outer circumference of the piston.

Abstract: In a fluid pressure cylinder, a piston is displaced in an axial direction under the action of a pressure fluid. A circular protrusion, which projects toward the piston along an axial direction of the cylinder tube, is formed on an inner end surface of a collar member constituting part of the fluid pressure cylinder, a concavity, which can be fitted externally over the circular protrusion, is formed on the piston, and an annular groove is formed on an inner circumferential edge of an end plate. By the piston coming into contact with the end plate, a pressure receiving chamber is formed between the piston and the annular groove, together with an opening of a second port on an inner side of the cylinder tube being closed to a maximum of 90%.