Abstract: The present invention maintains sealing of the housing over a long period of time. A multiple-optical-axis photoelectric sensor (100) includes a light projector (110) and a light receiver (120) whose external forms are each formed by a housing (1) including an outer case (10) constituted by a main body case (11) and a first cap member (12), a light-transmitting plate (15), a first pressing member (20A), second pressing members (20B), a first adhesive tape (17A), and second adhesive tapes (17B). The first cap member (12) has a supporting part (12a) provided on its inner side, and an elastic member (18) is provided between the second pressing member (20B) and a portion of the light-transmitting plate (15) supported by the supporting part (12a). The light-transmitting plate (15) is pressed toward the first cap member (12) via the elastic member (18).

Abstract: The present invention allows a user to easily grasp which light receiving section is in what light reception state. The multiple-optical-axis photoelectric sensor (10) includes: a plurality of light receiving sections (110); a display section (120) which is provided in the vicinity of a corresponding light receiving section among the plurality of light receiving sections (110), the display section (120) displaying a light reception state of the corresponding light receiving section; and a display control section (103) which causes the display section (220) and the display section (120) to simultaneously display the light reception state.

Abstract: The present invention achieves a multiple-optical-axis photoelectric sensor which can be assembled with reduced effort. A multiple-optical-axis photoelectric sensor (100) includes a light projector (110) and a light receiver (120) each having an outer shape defined by a housing (1) including: an outer case (10); a light-transmitting plate (15); and a pressing member (20). Supporting parts (11b) are provided at respective inner surfaces of side plates of the outer case. Extending parts (11c) are provided at end parts of the corresponding side plates. The pressing member is configured to press the light-transmitting plate against the supporting parts by being attached to the respective extending parts.

Abstract: The present invention achieves a multiple-optical-axis photoelectric sensor which can be assembled with reduced effort. A multiple-optical-axis photoelectric sensor (100) includes a light projector (110) and a light receiver (120) each having an outer shape defined by a housing (1) including: an outer case (10); a light-transmitting plate (15); and a pressing member (20). Supporting parts (11b) are provided at respective inner surfaces of side plates of the outer case. Extending parts (11c) are provided at end parts of the corresponding side plates. The pressing member is configured to press the light-transmitting plate against the supporting parts by being attached to the respective extending parts.

Abstract: The present invention allows a user to easily grasp which light receiving section is in what light reception state. The multiple-optical-axis photoelectric sensor (10) includes: a plurality of light receiving sections (110); a display section (120) which is provided in the vicinity of a corresponding light receiving section among the plurality of light receiving sections (110), the display section (120) displaying a light reception state of the corresponding light receiving section; and a display control section (103) which causes the display section (220) and the display section (120) to simultaneously display the light reception state.

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 present invention maintains sealing of the housing over a long period of time. A multiple-optical-axis photoelectric sensor (100) includes a light projector (110) and a light receiver (120) whose external forms are each formed by a housing (1) including an outer case (10) constituted by a main body case (11) and a first cap member (12), a light-transmitting plate (15), a first pressing member (20A), second pressing members (20B), a first adhesive tape (17A), and second adhesive tapes (17B). The first cap member (12) has a supporting part (12a) provided on its inner side, and an elastic member (18) is provided between the second pressing member (20B) and a portion of the light-transmitting plate (15) supported by the supporting part (12a). The light-transmitting plate (15) is pressed toward the first cap member (12) via the elastic member (18).

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.

Abstract: A light projector and a light receiver each include a case body, a light transmission plate closing an opening in a front face of the case body, caps closing openings in end faces of the case body, and cap covers attached slidably to each cap. The case body includes first supports partially 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 and second supports with an elastic member interposed between the light transmission plate and the first and second supports, the cap cover includes a pressing unit pressing the ends of the light transmission plate toward the second supports, and second engagement units engaging with each other to maintain a state where the pressing unit presses the light transmission plate are provided in the cap and the cap cover.

Abstract: A start-up time of a production facility is shortened while generation of a muting error is suppressed, whereby productivity is improved. A multiple-optical-axis photoelectric sensor system includes a projector, an optical receiver, a light blocking determination unit configured to make a light blocking determination whether each of optical axes formed between the projector and the optical receiver is in a light blocking state, and a muting processor configured to temporarily disable the light blocking determination on condition that a detection signal input from an external muting instrument changes according to a predetermined sequence. The muting processor determines the sequence of the detection signal from the muting instrument during the muting by dividing the sequence into a plurality stages. The muting processor accumulates and analyzes measurement information acquired in each stage, and decides an optimum setting value for a muting operation condition based on an analysis result.

Abstract: A start-up time of a production facility is shortened while generation of a muting error is suppressed, whereby productivity is improved. A multiple-optical-axis photoelectric sensor system includes a projector, an optical receiver, a light blocking determination unit configured to make a light blocking determination whether each of optical axes formed between the projector and the optical receiver is in a light blocking state, and a muting processor configured to temporarily disable the light blocking determination on condition that a detection signal input from an external muting instrument changes according to a predetermined sequence. The muting processor determines the sequence of the detection signal from the muting instrument during the muting by dividing the sequence into a plurality stages. The muting processor accumulates and analyzes measurement information acquired in each stage, and decides an optimum setting value for a muting operation condition based on an analysis result.

Abstract: Disclosed is a proximity switch provided with an actuator unit and a sensor unit. The sensor unit is provided with an antenna coil, a transmitting circuit which transmits electromagnetic waves at a constant frequency to the antenna coil, a receiving circuit which detects external signals received by means of the antenna coil, and control circuits. The actuator unit is provided with an antenna coil, a power supply circuit which rectifies an electromotive force generated in the antenna coil, and a signal processing circuit which receives power supply from the power supply circuit, performs frequency-dividing to the signals received by means of the antenna coil, and transmits the signals from the antenna coil after the frequency-dividing. The control circuit of the sensor unit has memory for registering the frequency of the signals transmitted from the actuator unit.

Abstract: Disclosed is a proximity switch provided with an actuator unit and a sensor unit. The sensor unit is provided with an antenna coil, a transmitting circuit which transmits electromagnetic waves at a constant frequency to the antenna coil, a receiving circuit which detects external signals received by means of the antenna coil, and control circuits. The actuator unit is provided with an antenna coil, a power supply circuit which rectifies an electromotive force generated in the antenna coil, and a signal processing circuit which receives power supply from the power supply circuit, performs frequency-dividing to the signals received by means of the antenna coil, and transmits the signals from the antenna coil after the frequency-dividing. The control circuit of the sensor unit has memory for registering the frequency of the signals transmitted from the actuator unit.