Abstract: A speed controller is capable of being applied to a cylinder with a short stroke with a simple structure. The speed controller includes a first flow channel and a second flow channel allowing a first port and a second port to communicate with each other, into which pressure fluid is allowed to flow, in which a first valve is arranged in the first flow channel, a second valve is arranged in the second flow channel, a third flow channel and a fourth flow channel are further included, and a third valve is arranged in the third flow channel, allowing only flowing from the first port toward a portion on the piston shaft side with respect to a piston in a cylinder chamber in the third flow channel as well as closing the first flow channel and the fourth flow channel by moving a third valve body in a direction of opening the third flow channel, and opening the first flow channel and the fourth flow channel by moving the third valve body in a direction of closing the third flow channel.

Abstract: A speed controller capable of controlling an action speed of an external cylinder in one stroke in a step-wise manner. The speed controller includes a first flow path and a second flow path that allow a first port and a second port to be in communication with each other. The first flow path is provided with a first check valve for allowing flow from the first port to the second port. The second flow path is provided with a first needle valve, and an opening hole of the first check valve is constituted as a part of a flow path. The first needle valve adjusts the flow rate by changing an opening area of the opening hole with a tip portion fixed on a piston in the cylinder chamber. The speed controller further includes a third flow path allowing the first port and the cylinder chamber to be in communication with each other. The third flow path is provided with a second check valve for allowing flow from the first port to the cylinder chamber.

Abstract: A speed controller capable of controlling an action speed of an external cylinder in one stroke in a step-wise manner. The speed controller includes a first flow path and a second flow path that allow a first port and a second port to be in communication with each other. The first flow path is provided with a first check valve for allowing flow from the first port to the second port. The second flow path is provided with a first needle valve, and an opening hole of the first check valve is constituted as a part of a flow path. The first needle valve adjusts the flow rate by changing an opening area of the opening hole with a tip portion fixed on a piston in the cylinder chamber. The speed controller further includes a third flow path allowing the first port and the cylinder chamber to be in communication with each other. The third flow path is provided with a second check valve for allowing flow from the first port to the cylinder chamber.

Abstract: A tube fitting for attaching and detaching a tube. The tube fitting includes a tubular main body, a sleeve being tubular-shaped and being fixed in the main body with axial lines of the main body and the sleeve coincided with each other. A locking member includes a ring part and a plurality of extended parts extending from the ring part toward an axial direction and being mounted in the sleeve in a state where axial lines of the ring part and the sleeve are coincided with each other and being movable in the sleeve in an axial direction and in a circumferential direction.

Abstract: The roller can be suitably used for a guide section of a moving unit capable of moving a heavy matter without enormously increasing rigidity of a rail and is capable of reducing weight and production cost of the moving unit. The roller comprises: a tubular core having an outer circumferential face, in which a groove section is formed; and a resin coat section continuously coating the outer circumferential face of the tubular core, an inner face of the groove section, both ends of the tubular core and at least parts of an inner circumferential face thereof.

Abstract: The flow controller is capable of optionally controlling flow volume of controlled flow and reducing weight and a production cost. The flow controller comprises: a main body having a first flow path and a second flow path; a ring packing for sealing the flow paths; a rod-shaped flow control member tightly pierced through the ring packing and capable of moving with respect to the ring packing, the flow control member having a third flow path; operation means for moving the flow control member so as to control the flow volume; a fourth flow path provided outside of the ring packing; and a check valve prohibiting a fluid to flow from the second flow path to the first flow path via the fourth flow path and allowing the fluid to flow from the first flow path to the second flow path via the fourth flow path.

Abstract: A tube fitting is provided which is capable of easily attaching and detaching a tube by one hand manipulation and of more improving attachability and detachability and setting pressure contact force to be higher. The tube fitting including a tubular main body, a sleeve being tubular-shaped and being fixed in the main body with axial lines of the main body and the sleeve coincided with each other, a locking member having a ring part and a plurality of extended parts extending from the ring part toward an axial direction and being mounted in the sleeve in a state where axial lines of the ring part and the sleeve are coincided with each other and being movable in the sleeve in an axial direction and in a circumferential direction.

Abstract: A tube fitting which can change a position (angle) of a fitting part to connect external tube thereto is provided. A tube fitting 1, which comprises a fitting part 4 at one end side of a body 2, and a installation screw part 3 at the other end side, wherein the body 2 includes a pipe path 20, inside of which fluid passes, the fitting part 4 includes an opening part 42 at the rear end thereof, to which external tube 60 is inserted, and a pipe path 40, inside of which fluid passes, the fitting part 4 being connected to a connecting part 24 provided in a side part of the body 2 so that the fitting part 4 is rotatable in a direction where an angle between center axis of the opening part 42 and center axis of the installation screw part 3 varies, one end of a pipe path 40 of the fitting part 4 communicates with the opening part 42 and the other end of the pipe path communicates with the pipe path 20 of the body 2 via the connecting part 24.

Abstract: A tube fitting is provided which is able to be easily attached even in a narrow attaching place. The tube fitting 1 includes one or more fitting parts 4 to be connected to an external tube formed at one end of a main body 2 and a screw part for attachment 3 formed at another end of the main body 2, wherein fluid passes through an inside part thereof and wherein the screw part for attachment 3 has, at its external circumference, screw threads and, in its inside part, a tool connecting part into which a non-inverse and inverse rotation tool to rotate the screw part for attachment 3 non-inversely and inversely is allowed to be fitted, and a pipe path through which fluid passes.

Abstract: To provide a thread in which looseness can be prevented over a long period of time, and a high sealing properties can be maintained, a manufacturing method of the thread, a fastening system using the thread, and a pipe fitting using the thread. A thread according to the present invention is provided, wherein, a screw thread member of which screw threads are formed on an outer periphery thereof and which is made up of a softer material than that of an insert core is formed in a close contact with an outer periphery of the insert core, large-diameter parts that sandwich the screw thread member therebetween in an axis line direction are formed, in a fore end part and a rear end part of the insert core or an intermediate part nearer to the fore end part 3a from the rear end part, and screw threads that are continuous to screw threads of the screw thread member are formed on an outer periphery of a large-diameter part of the fore end part.

Abstract: The present invention provides a movement device, which is capable of automatically eliminating a clearance between a contact body and a support rail without increasing preload and even with abrasion of the contact body and the support rail, so that the device has no play.

Abstract: The present invention provides a movement device, in which a clearance between a contact body and a support rail is automatically eliminated, without an increase in preload and even with abrasion of the contact body and the support rail, so as to eliminate play of the movement device.

Abstract: The present invention provides a movement device using a roller unit, in which play in an axial direction of rollers is appropriately reduced, operation resistance is reduced and the rollers have less abrasion.

Abstract: The roller can be suitably used for a guide section of a moving unit capable of moving a heavy matter without enormously increasing rigidity of a rail and is capable of reducing weight and production cost of the moving unit. The roller comprises: a tubular core having an outer circumferential face, in which a groove section is formed; and a resin coat section continuously coating the outer circumferential face of the tubular core, an inner face of the groove section, both ends of the tubular core and at least parts of an inner circumferential face thereof.

Abstract: The flow controller is capable of optionally controlling flow volume of controlled flow and reducing weight and a production cost. The flow controller comprises: a main body having a first flow path and a second flow path; a ring packing for sealing the flow paths; a rod-shaped flow control member tightly pierced through the ring packing and capable of moving with respect to the ring packing, the flow control member having a third flow path; operation means for moving the flow control member so as to control the flow volume; a fourth flow path provided outside of the ring packing; and a check valve prohibiting a fluid to flow from the second flow path to the first flow path via the fourth flow path and allowing the fluid to flow from the first flow path to the second flow path via the fourth flow path.

Abstract: The actuating device is capable of automatically eliminating a clearance between a contact body and a rail. The actuating device comprises: a moving body guided by the rail; the contact body contacting the rail; and a pressure unit biasing the contact body toward the rail or in a pressing direction. The pressure unit comprises: a rod having one end, which contacts the moving body, and the other end, the rod being capable of moving in the pressing direction; a first biasing member biasing the rod; a casing covering an outer face of the rod, the casing having an inner face, whose distance from the outer face of the rod is gradually reduced toward the other end of the rod; and a spherical body contacting the inner face of the casing and the outer face of the rod.

Abstract: The linear motion drive system is capable of optionally changing a position of a linear rail with respect to a pedestal. The linear motion drive system comprises: a pedestal section; a linear rail arranged in parallel with respect to the pedestal section; a rail holder attached to the pedestal section, the rail holder holding the linear rail on the pedestal section; and a moving body linearly reciprocally moving along the linear rail. The rail holder is slidably attached to and fixed to the pedestal section by an attaching mechanism so as to optionally change a position of the rail holder with respect to the pedestal section.

Abstract: A tube can be easily attached to and detached from the tube joint by one hand. The tube joint comprises: a body proper having one open end, from which the tube is inserted; and a locking member locking the tube in the body proper. The locking member includes: a ring section sliding on an inner face of the body proper and moving in an axial direction; a plurality of flexible extended sections extended from the ring section toward the one open end of the body proper; and a plurality of claw sections radially projected inward from front ends of the flexible extended sections. The body proper has a tapered section, which reduces a diameter of the front ends of the flexible extended sections when the locking member is moved toward the one open end and the front ends of the flexible extended sections enter the tapered section, whereby the claw sections bite and lock the tube.

Abstract: The linear motion drive system is capable of automatically remove a clearance between a moving body and a linear shaft when the moving body and/or the linear shaft is abraded. The linear motion drive system comprises: the moving body linearly and reciprocally moved along the linear shaft; a contact body contacting the linear shaft; and a pressure unit provided to the moving body, the pressure unit pressing the contact body so as to apply pressure to the linear shaft. The pressure unit includes: a press section contacting and pressing the contact body; a biasing member biasing the press section toward the linear shaft; and a locking mechanism holding the press section.

Abstract: The tough guide chain is capable of easily connecting and disconnecting link modules. The guide chain includes a plurality of link modules detachably connected. Each link module comprises: a main body section including a bottom plate, a pair of side plates extended from the bottom plate and a flexible hinge plate extended from an edge of the bottom plate: a joint section connecting the flexible hinge plate of the adjacent link module with the bottom plate of the main body section; and a flap detachably attached to the side plates. The main body section is made of an elastic resin material, and the joint section is made of a tough material so as to reinforce and support the bottom plate and the side plates.