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.

Abstract: A sensor module includes an intermediate member, a flexible substrate that is wound around the intermediate member, and a sensor element that comprises a lead part that passes through the flexible substrate and is inserted into the intermediate member. The flexible substrate is wound around the intermediate member so that a first portion of the flexible substrate is superimposed on and in contact with a second portion that differs from the first portion of the flexible substrate; and the lead part passes through the first portion and the second portion and is inserted into the intermediate member.

Abstract: A cylinder device includes a first cylinder chamber that has a first piston; a second cylinder chamber that has a second piston; a first rod that is connected to the first piston; a second rod that partially overlaps with the first rod in the radial direction and protrudes from a body; and a conversion mechanism that converts displacement of one section in the axial direction of the first rod into displacement in a rotational direction of the second rod, and transmits displacement of another section in the axial direction of the first rod as displacement in the axial direction of the second rod. The second piston is connected to the second rod.

Abstract: An ultrasonic flow sensor is constituted by a body assembly and clamp assemblies positioned at opposite ends of the body assembly. The body assembly includes a housing that houses an ultrasonic element and the clamp assemblies include clamp bands. The clamp assemblies are supported on the housing in a manner so that the clamp assemblies are displaceable in a direction perpendicular to a bottom surface of the housing that comes in contact with the tube.

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: A leakage detection device for detecting leakage of compressed gas includes a microphone that collects an ultrasonic signal which is converted into an electrical signal and outputted. Lock-in amplifiers extract one of the electrical signals having a specific frequency corresponding to a leakage and a calculation circuit calculates a physical amount corresponding to an amplitude value of the signal having the specific frequency. A notification device provides a notification to a user depending on the physical amount calculated by the calculation circuit.

Abstract: A chuck apparatus includes a pair of grip members driven by a piston via a pair of levers, and the levers are rotatably supported by a body via lever shafts. A lever shaft protrudes from the attachment surface of the body to the transport device, and positioning with respect to the transport device is performed by using the protruding portion.

Abstract: A piezoelectric valve includes a housing provided with an inflow hole and an outflow hole for air, and a valve element disposed in the housing and configured to open and close the inflow hole. The valve element is configured by a piezoelectric unit including a plate-shaped piezoelectric element and a diaphragm on which the piezoelectric element is stacked. The inflow hole does not overlap the piezoelectric element but overlaps only the diaphragm when viewed from a stacking direction of the piezoelectric element in the piezoelectric unit.

Abstract: A piezoelectric valve is a piezoelectric valve driven by a DC component, and includes a plurality of piezoelectric elements electrically connected in parallel via electrodes made of a metal-plated film; a conductive diaphragm joined to the plurality of piezoelectric elements via the electrodes; and a resistor electrically connected to the plurality of piezoelectric elements, and an electric resistance value of the resistor is less than an insulation resistance value of each of the piezoelectric elements.

Abstract: A plurality of vacuum suction cylinders are connected to each other by using tie rods inserted into insertion holes penetrating side walls of a cylinder tube of each vacuum suction cylinder, insertion holes provided in a first flow path block, and insertion holes provided in a second flow path block, and sandwiching between the first flow path block and the second flow path block.