Abstract: A light receiver outputs a log indicating at least one of an operating status of a multiple optical axis photoelectric sensor and an environment surrounding the multiple optical axis photoelectric sensor, at the time of an output being turned off.

Abstract: Provided is a damping member which can be easily mounted to a rolling guide device already in use, can avoid an increase in size of the rolling guide device, and can easily enhance a damping force in an axial direction exerted by the rolling guide device. The damping member is applied to the rolling guide device in which a moving block is assembled to a track rail through intermediation of a plurality of rolling elements, is provided to the track rail in series with the moving block, and includes: a friction member which includes a sliding contact pad in contact with at least the track rail; and a fixing holder, which includes a holding portion configured to cover the friction member so as to press the sliding contact pad against the track rail, and is configured to couple the friction member to the moving block.

Abstract: Provided is a damping member which can be easily mounted to a rolling guide device already in use, can avoid an increase in size of the rolling guide device, and can easily enhance a damping force in an axial direction exerted by the rolling guide device. The damping member is applied to the rolling guide device in which a moving block is assembled to a track rail through intermediation of a plurality of rolling elements, is provided to the track rail in series with the moving block, and includes: a friction member which includes a sliding contact pad in contact with at least the track rail; and a fixing holder, which includes a holding portion configured to cover the friction member so as to press the sliding contact pad against the track rail, and is configured to couple the friction member to the moving block.

Abstract: A light projector and a light receiver each includes a case body, a light transmission plate closing an opening in a front face of the case body, and a pair of caps closing openings in end faces of the case body. The case body includes first supports supporting side edges of the light transmission plate, the caps respectively include second supports supporting ends of the light transmission plate, the light transmission plate is supported by the first supports and the second supports with an elastic member interposed between the light transmission plate and the first and second supports, and the cap is fixed to the case body while the seal member abutting on the end face of the case body is interposed between the cap and the case body. A cured liquid sealing agent is interposed between leading ends of the seal member and the elastic member.

Abstract: The disclosure prevents a string-shaped elastic member from being sandwiched and held between a light transmitting plate and a frame body or the like in a twisted state. At least a part of a side wall on an outer side of a storage groove (21) is provided with a projection part (22) preventing an elastic member (4) from being twisted.

Abstract: The disclosure prevents a string-shaped elastic member from being sandwiched and held between a light transmitting plate and a frame body or the like in a twisted state. At least a part of a side wall on an outer side of a storage groove (21) is provided with a projection part (22) preventing an elastic member (4) from being twisted.

Abstract: Provided is a relay unit that is inexpensive and has a long life, and a method for controlling a relay circuit. A series circuit of mechanical switches is connected in series to a load and a load power supply, and a control unit selects one of the mechanical switches as a selected switch, and performs a switching timing shift, which is constituted by at least one of a first operation in which the selected switch is switched to the closed state after the mechanical switch other than the selected switch, and a second operation in which the selected switch is switched to the open state prior to the mechanical switch other than the selected switch.

Abstract: A miniature and inexpensive relay device is provided. A relay device, i.e., a relay unit, includes a breakdown detection unit that does not detect breakdown of an operation of a first switching element and detect breakdown of an operation of a second switching element. When a switching control unit switches an external load circuit from non-conductivity to conductivity, the switching control unit switches the second switching element from non-conductivity to conductivity after switching the first switching element from non-conductivity to conductivity. When the switching control unit switches the load circuit from conductivity to non-conductivity, the switching control unit switches the first switching element from conductivity to non-conductivity after switching the second switching element from conductivity to non-conductivity.

Abstract: A vertical seismic isolation device includes: a fixed frame; a movable frame arranged on the fixed frame; a support guide mechanism which allows only vertical movement of the movable frame; and a restoration member which maintains a constant distance between the movable frame and the fixed frame. The support guide mechanism includes: a track rail provided on the fixed frame; a moving block assembled to the track rail through rolling elements; a support leg, which has one end coupled to the moving block and another end coupled to the movable frame, and converts vertical movement of the movable frame into a motion of the moving block; and an auxiliary leg, which is half as long as the support leg, and has one end coupled to the support leg at an intermediate position in a longitudinal direction of the support leg and another end coupled to the fixed frame.

Abstract: Provided is a relay unit that can sufficiently suppress defects that are caused by an insulation failure of insulating member that insulates and separates a load power supply from a device power supply, and a method for controlling a relay circuit. A control unit includes an insulating member diagnosis unit that performs diagnosis of an insulation failure of the capacitor.

Abstract: A vertical seismic isolation device includes: a fixed frame; a movable frame arranged on the fixed frame; a support guide mechanism which allows only vertical movement of the movable frame; and a restoration member which maintains a constant distance between the movable frame and the fixed frame. The support guide mechanism includes: a track rail provided on the fixed frame; a moving block assembled to the track rail through rolling elements; a support leg, which has one end coupled to the moving block and another end coupled to the movable frame, and converts vertical movement of the movable frame into a motion of the moving block; and an auxiliary leg, which is half as long as the support leg, and has one end coupled to the support leg at an intermediate position in a longitudinal direction of the support leg and another end coupled to the fixed frame.

Abstract: The reliability of testing a normally closed contact in a relay unit may involve the following. While the load is de-energized, sending a test signal to a normally closed contact (b1, b2) and detecting the state of the returning test signal sent. Resending a test signal when a detection result does not satisfy a predetermined criteria, and re-detecting the state of the returning test signal resent. The state of the returning test signal resent may be assessed as normal when the re-detection result satisfies the predetermined criteria.

Abstract: The reliability of testing a normally closed contact in a relay unit may involve the following. While the load is de-energized, sending a test signal to a normally closed contact (b1, b2) and detecting the state of the returning test signal sent. Resending a test signal when a detection result does not satisfy a predetermined criteria, and re-detecting the state of the returning test signal resent. The state of the returning test signal resent may be assessed as normal when the re-detection result satisfies the predetermined criteria.

Abstract: The reliability of testing a normally closed contact in a relay unit may involve the following. Sending a first test signal to the first normally closed contact and detecting a return state of the first test signal sent, sending a second test signal different from the first test signal to the second normally closed contact and detecting a return state of the second test signal sent; and assessing an abnormality when at least one of the detection result for the return state of the first test signal does not satisfy a first predetermined criteria, and the detection result of the return state of the second test signal does not satisfy a second predetermined criteria different from the first predetermined criteria.

Abstract: A light projector and a light receiver each includes a case body, a light transmission plate closing an opening in a front face of the case body, and a pair of caps closing openings in end faces of the case body. The case body includes first supports supporting side edges of the light transmission plate, the caps respectively include second supports supporting ends of the light transmission plate, the light transmission plate is supported by the first supports and the second supports with an elastic member interposed between the light transmission plate and the first and second supports, and first engagement units engaging with each other to restrict inward displacements of the ends of the light transmission plate supported by the second supports in the longitudinal direction are respectively provided in the cap and the light transmission plate.

Abstract: A light projector and a light receiver each includes a case body, a light transmission plate closing an opening in a front face of the case body, and a pair of caps closing openings in end faces of the case body. The case body includes first supports supporting side edges of the light transmission plate, the caps respectively include second supports supporting ends of the light transmission plate, the light transmission plate is supported by the first supports and the second supports with an elastic member interposed between the light transmission plate and the first and second supports, and the cap is fixed to the case body while the seal member abutting on the end face of the case body is interposed between the cap and the case body. A cured liquid sealing agent is interposed between leading ends of the seal member and the elastic member.