Abstract: A cylinder device includes a cylinder tube having an opening formed therein; a cover section that is columnar and closes the open end of the opening; and a stop ring that has an inner part accommodated in an accommodation groove in the cover section and an outer part engaged with an engagement groove in the opening. A tapered section increasing in diameter toward the open end is formed in the opening. The inner diameter of the tapered section in the open end is larger than the central diameter of the stop ring when not in an elastically deformed state.

Abstract: A temperature adjustment device is provided to gradually change the temperature of a load to a target temperature while adjusting the temperature of the load to the target temperature in the middle of temperature adjustment. A time-dependent set temperature of the load is calculated from a target temperature gradient at each elapsed time of a plurality of timings within a target reach time period, and the time-dependent set temperature is compared with a time-dependent measured temperature inputted from a measurement input unit. A control output unit controls a heating unit and a cooling unit based on a result of comparison between the time-dependent set temperature and the time-dependent measured temperature.

Abstract: A cylinder device includes a guide member fixed to a body; a piston member displaced only in the axial direction; a piston rod displaceable in the circumferential direction and the axial direction; and a conversion mechanism that converts some of the displacement of the piston member to circumferential displacement. The conversion mechanism includes an L-shaped displacement switching groove provided to the guide member; a helical groove provided to the piston member and inclined with respect to the axial direction; and a link pin supported by the piston rod and that moves along the displacement switching groove and the helical groove.

Abstract: A parameter determination device for an actuator includes a fixed member, a movable member movable with respect to the fixed member, and a motor configured to move the movable member. It further includes an input parameter acquisition unit configured to acquire an input parameter related to a target position and a moving speed of the movable member; a torque acquisition unit configured to acquire, as a result of the motor moving the movable member based on the input parameter, torque of the motor in a cycle time that ranges from when the movable member starts movement to when the movable member arrives at the target position; and a determination unit configured to determine whether the input parameter is appropriate, based on the torque.

Abstract: A control circuit for a solenoid valve having a solenoid coil is provided with: a current feedback bias circuit that has a transistor in which a base electrode is connected to a pull-up resistor and a pull-down resistor, an emitter electrode is connected to an emitter resistor connected to the ground, and a collector electrode is connected to a load resistor, and that amplifies an AC component of a first voltage corresponding to a current flowing through the solenoid coil; and a voltage output circuit that outputs a second voltage, which changes in accordance with the amplified AC component, to a determination device.

Abstract: In a poppet valve, a packing is surely mounted on a valve rod to prevent this packing from dropping off from the valve rod in operation of the selector valve. The packing has a ring shape and is mounted on a packing mounting surface formed in a packing-mounted portion of a valve rod by holding an outer circumferential portion of the packing between a packing holding member attached to the packing-mounted portion and the packing mounting surface in a state in which one side surface of this packing is made to abut against the packing mounting surface and an inner circumferential portion of this packing is fitted in a packing support groove formed at the inner diameter end of the packing mounting surface.

Abstract: A fluid pressure cylinder includes a cylinder section and an adapter unit detachably mounted to a cylinder tube of the cylinder section. A first input/output port and a second input/output port communicating with a piston chamber are provided in the cylinder tube. A first attachment hole and a second attachment hole are provided in the adapter unit. A first supply/discharge tube and a connected second supply/discharge tube are attached to the first attachment hole and the second attachment hole, respectively.

Abstract: An excessive attraction detection device is composed of a cylinder unit including pistons, and a magnet unit including a permanent magnet for attraction. The permanent magnet for attraction can be displaced integrally with the pistons between an attraction position and a retreat position. The attraction position separation energizing force acting on the pistons is larger than the magnetic force of mutual attraction between the permanent magnet for attraction and the workpiece when one workpiece is attracted and held by a workpiece attraction device and smaller than the magnetic force of mutual attraction between the permanent magnet for attraction and the workpiece when two workpieces are attracted and held by the workpiece attraction device.

Abstract: A connection device has a first joined body and a second joined body. The first joined body has an extension part that extends along an insertion/removal direction and that is inserted into an insertion hole formed in the second joined body. The outer peripheral surface of the extension part has a first step part and a second step part. The second step part is positioned farther inward than the first step part between the first step part and the base end of the extension part, the second step part engaging with the second joined body. The first step part engages with the second joined body after the engagement of the second step part is released.

Abstract: An equipment inspection system performs compressed air leakage inspection on a plurality of pieces of pneumatic equipment that are connected to pipes, or pipe joints that connect the respective pipes and the plurality of pieces of pneumatic equipment, has a first branched pipe and a second branched pipe. A flow rate measurement device is provided in the second branched pipe. The flow rate measurement device measures the flow rate of the compressed air flowing in the second branched pipe. A fluorescent solvent providing part is provided in the first branched pipe. A fluorescent solvent is supplied to the pipe from the fluorescent solvent providing part.

Abstract: A valve device is provided with a nozzle that has a flow hole through which a fluid flows; a support member that supports the nozzle; a valve body that has a piezoelectric element and opens and closes an opening of the flow hole by driving of the piezoelectric element; and a position adjustment mechanism for adjusting the position of the nozzle with respect to the valve body. The position adjustment mechanism has an urging member for urging the nozzle toward the valve body; and a stopper member for preventing movement of the nozzle due to the urging member by coming into contact with the nozzle.

Abstract: A pipe inspection system which tests for compressed air leaks in a section to be inspected in a pipe has a first branch pipe and a second branch pipe. The first branch pipe branches from the pipe upstream of the section to be inspected, and joins the pipe, upstream of the section to be inspected. The second branch pipe branches from the pipe downstream of the section to be inspected. The first branch pipe has a fluorescent solvent supply unit provided therein that supplies a fluorescent solvent to the section to be inspected. The second branch pipe has a fluorescent solvent recovery unit provided therein that recovers fluorescent solvent from the section to be inspected.

Abstract: A fulcrum opening/closing type air chuck includes porous bodies that are attached to a body and come into contact with fingers, and purge air passes through the porous bodies and is discharged to the outside.

Abstract: A suction pad includes a body and a sponge member. The body includes a negative pressure chamber, and a plurality of communication passages communicating with the negative pressure chamber. The sponge member includes a plurality of cavities opening toward a workpiece. The cavities communicate with the negative pressure chamber through the communication passages, and flow passage adjustment valves for adjusting a flow passage area are arranged in the communication passages, respectively. The suction pad further includes a pressure detection port for detecting pressure in at least one cavity among the plurality of cavities.

Abstract: A suction board includes a nonwoven fabric sheet that has a uniform thickness and is formed into a disk shape, and a ring-shaped holding body that movably supports the nonwoven fabric sheet to an attaching adapter. The suction surface is formed by the flat surface of the nonwoven fabric sheet, and the nonwoven fabric sheet is provided with an air-impermeable region in the outer peripheral portion and an air-permeable region excluding the outer peripheral portion, and the density of the air-impermeable region is higher than the density of the air-permeable region.

Abstract: A cylinder device includes a guide member fixed to a body; a piston member displaced only in the axial direction; a piston rod displaceable in the circumferential direction and the axial direction; and a conversion mechanism that converts some of the displacement of the piston member to circumferential displacement. The conversion mechanism includes an L-shaped displacement switching groove provided to the guide member; a helical groove provided to the piston member and inclined with respect to the axial direction; and a link pin supported by the piston rod and that moves along the displacement switching groove and the helical groove.

Abstract: A refrigeration circuit includes a compressor; a delivery passage through which refrigerant is delivered from the compressor; a return passage through which refrigerant after temperature regulation is returned to the compressor; first and second circulation passages and through which refrigerant is supplied to a thermal load in a circulating manner; a switching circuit that mutually switches, between the first and second circulation passages, a circulation passage through which refrigerant is delivered to a thermal load and a circulation passage through which refrigerant is received from a thermal load by changing a communication state in which the circulation passages are in communication with the delivery passage and the return passage; a first expansion valve provided in the first circulation passage; and a heat exchanger connected between the first circulation passage and the switching circuit.

Abstract: A chuck stored in a sleeve has an engagement piece formed with a claw part capable of being locked to an outer surface of a tube. The sleeve is rotatable between a first rotation position and a second rotation position relative to a body. A pipe fitting includes a cam part that guides the engagement piece along with the rotation of the sleeve in such a way that the distance from the engagement piece to the axial center of the chuck changes. An unlock mechanism removes restriction on the rotation of the sleeve in accordance with the insertion of the tube to a predetermined position.