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    • 93. 发明专利
    • PRESSURE SWITCH
    • JPH0357120A
    • 1991-03-12
    • JP19293789
    • 1989-07-25
    • MATSUSHITA ELECTRIC IND CO LTD
    • IWABUCHI HIROOUNO TAKASHI
    • H01H35/34
    • PURPOSE:To obtain a pressure switch resistant to excessive pressures on the positive and negative pressure sides by forming a pin guide into a shape laid along the form of the diaphragm, keeping a fixed minute space such that it never contact with the diaphragm within operating pressure range, and providing a negative pressure stopper keeping the same minute space on the pressure receiving side of the diaphragm. CONSTITUTION:A pin guide 18 laid along the form of a diaphragm 2 with keeping a fixed minute space such that it never contact with the diaphragm 2 by a pressure within operating pressure range and a negative pressure stopper 19 keeping the same minute space on the pressure receiving surface side of the diaphragm 2 are provided. When an excessive pressure is added to the positive pressure side, the diaphragm 2 is pushed onto the pin guide 18, but it is never deformed even if closely pushed, because the diaphragm side surface of the pin guide is suited to the form of the diaphragm. When an excess pressure is added to the negative pressure side similarly, the diaphragm 2 is conversely pushed onto the negative pressure stopper, but the diaphragm is never deformed as the diaphragm surface of the negative pressure stopper is also suited to the form of the diaphragm.
    • 95. 发明专利
    • TRANSFORMER
    • JPH02263413A
    • 1990-10-26
    • JP8543289
    • 1989-04-04
    • MATSUSHITA ELECTRIC IND CO LTD
    • UNO TAKASHI
    • H01F30/00H01F37/00
    • PURPOSE:To enhance the conversion efficiency and the reliability upon a transformer by a method wherein multiple coils with the first conductor wound around hollow magnetic cores are connected in series as the primary winding while the second conductor is wound around the multiple hollow magnetic cores as the second winding. CONSTITUTION:U-type cores 7a, 7b are assembled into units to form hollow magnetic cores 6, 8; the first conductor is wound around a bobbin 9 by n turns to electrically connect the ends respectively to pins 11, 12; and then insulating tape 10 is wound up to form coils 1, 2. Then, insulators 3, 4 are assembled into the hollow magnetic cores 6, 8 provided with the coils 1, 2 so as to insulate the magnetic cores 6, 8 from the secondary winding 5 passing through the insulators 3, 4 furthermore the coils 1, 2 are connected in seri es as the primary winding to manufacture the title transformer. Accordingly, the secondary winding 5 need not be wound around the bobbin 9, thereby enabling a hard and large conductor to be used as the secondary winding for reducing the resistance value. Through these procedures, the conversion efficiency and the reliability upon the transformer can be enhanced.
    • 98. 发明专利
    • SEISMOSCOPE DEVICE
    • JPH02143126A
    • 1990-06-01
    • JP29865088
    • 1988-11-25
    • MATSUSHITA ELECTRIC IND CO LTD
    • IWABUCHI HIROOUNO TAKASHI
    • G01H1/00H01H35/14
    • PURPOSE:To prevent a malfunction from occurring at a place where an impulse wave attenuates by detecting an on/off signal at the early stage of a shock and generating no output as long as the signal is generated continuously. CONSTITUTION:A stability detecting means 4 for on/off time widths monitors the on/off time widths of a seismoscope in a prescribed time to calculate the variation state of each time width or the sum of the time widths at each time, thereby generating an output when the variation value is smaller than a prescribed value. Further, an off-time-width detecting means 5 monitors the off time width of the seismoscope 1 and generates an output when the off time width is larger than a prescribed off time width. Further, an output control means 6 inhibits the output of a frequency detecting means 2 which is larger than the prescribed on/off time width from being outputted to a terminal 3 when the signal from the means 4 is inputted and releases that when the signal from the means 5 is inputted.
    • 99. 发明专利
    • SEISMOSCOPE DEVICE
    • JPH01272925A
    • 1989-10-31
    • JP10303588
    • 1988-04-26
    • MATSUSHITA ELECTRIC IND CO LTD
    • IWABUCHI HIROOUNO TAKASHI
    • G01H1/00H01H35/14
    • PURPOSE:To reduce malfunction due to a shock at the time of the striking of a body by sending out the output of a frequency detecting means for time width larger than prescribed on-off time width and the output of a variation state detecting means for on-off time width only when both means generate the outputs. CONSTITUTION:The frequency detecting means 2 for the on-off time width larger than the prescribed on-off time width monitors the on-off time width of a seismoscope 1 which generates a repetitive signal turning on and off in response to vibration to detect the number of times of an on state larger than prescribed on time which has a time longer than a prescribed off time before a next on state being larger than the prescribed number of times within a prescribed time. The variation state detecting means 4 for on-off time width monitors the variation state of each time width of each time as to all on and off states while the detecting means 2 performs detection to detect the mean value of the variation values exceeding the prescribed variation value. Then only when those two detecting means 2 and 4 generate their outputs, the output signals are outputted.