摘要:
The present invention is a method of pickling of steel plate which contains silicon comprising applying ultrasonic waves of at least two types of frequencies of 28.0 kHz or more to less than 1.0 MHz to an acidic cleaning solution which contains microbubbles and, in that state, dipping the steel plate which contains silicon in that cleaning solution. The present invention is a continuous pickling system of steel plate which contains silicon which is provided with at least a support part which supports the steel plate, a conveyor which makes the steel plate move, and a pickling tank which pickles the steel plate, wherein the pickling tank has means for feeding microbubbles and means for applying ultrasonic waves of at least two types of frequencies of 28.0 kHz or more to less than 1.0 MHz.
摘要:
The present invention is a method of pickling of steel plate which contains silicon comprising applying ultrasonic waves of at least two types of frequencies of 28.0 kHz or more to less than 1.0 MHz to an acidic cleaning solution which contains microbubbles and, in that state, dipping the steel plate which contains silicon in that cleaning solution. The present invention is a continuous pickling system of steel plate which contains silicon which is provided with at least a support part which supports the steel plate, a conveyor which makes the steel plate move, and a pickling tank which pickles the steel plate, wherein the pickling tank has means for feeding microbubbles and means for applying ultrasonic waves of at least two types of frequencies of 28.0 kHz or more to less than 1.0 MHz.
摘要:
A variable resistor includes a resistor element having a first end and a second end, a slider sliding on the resistor element, an adjustable resistor portion having a first end connected to the first end of the resistor element and having a second end, a first terminal connected to the second end of the adjustable resistor portion, a second terminal electrically coupled to the second end of the resistor element, and a third terminal connected to the slider. The adjustable resistor portion is positioned outside of the sliding range of the slider. This variable resistor outputs a precise resistance having s small variation from a predetermined resistance.
摘要:
Rotary body 22 is provided with storing hole 22E, 22F in two positions point-symmetrical to the rotational center at the upper part of flange 22C, and retainers 26, 27 having steel balls 25A, 25B, steel ball receiving holes 26A, 27A, coil springs 28A, 28B are stored therein from the opening side in order, and steel ball receiving hole 26A of one retainer 26 is provided with a tolerance that enables steel ball 25A to slightly move in the horizontal direction, and click plate 24 on which steel balls 25A, 25B are resiliently contacted is disposed between rotary body 22 and bearing 23, and as a result, it is possible to maintain rhythmical clicking and clicking sound even in case of repeating the rotating operation.
摘要:
A rotary manipulation type electronic device permits users to obtain a feel of manipulation during rotational manipulations and produces clicking sounds of manipulations to thereby obtain an audiological sense of manipulations. The rotary manipulation type electronic device has a base body with which a rotary body is rotatably combined. An operative element is disposed such that movement of the operative element is restricted by an inside wall of a terminal leading portion of the base body and by leg portions of a leaf spring. Engagement portions engaging an uneven portion of a top surface of a flange portion of the rotary body protrude from the operative element. The leaf spring is brought into elastic contact with the top surface of the operative element.
摘要:
The present invention provides a rotary manipulation type electronic device which permits one to obtain a feel of manipulations during rotational manipulations and produces lilting sounds of manipulations to thereby obtain an audiological sense of manipulations. The rotary manipulation type electronic device of the present invention has a base body with which a rotary body is rotatably combined. An operative element is disposed in such a way that movement of the operative element is restricted by the inside wall of a terminal leading portion of the base body and by leg portions of a leaf spring. Engagement portions engaging an uneven portion of the top surface of a flange portion of the rotary body protrude from the operative element. The leaf spring is brought into elastic contact with the top surface of the operative element.
摘要:
A press-fit fixing terminal is mountable to a wiring board by being inserted into a through-hole of the wiring board, and includes a flat plate section and a resilient contacting section. The flat plate section is made of metal thin plate and double-backed such that an end of the flat plate section is placed on a root side and a bent point works as an insertion tip when the terminal is inserted into the through-hole. The resilient contacting sections sandwich the double-backed portion of the flat plate section such that they are placed symmetrically with respect to the double-backed portion and both of the ridges of the resilient contacting section face outward viewed from the double-backed portion, so that each one of the resilient contacting sections forms a V-shape including an obtuse angle.
摘要:
A variable resistor includes a resistor element having a first end and a second end, a slider sliding on the resistor element, an adjustable resistor portion having a first end connected to the first end of the resistor element and having a second end, a first terminal connected to the second end of the adjustable resistor portion, a second terminal electrically coupled to the second end of the resistor element, and a third terminal connected to the slider. The adjustable resistor portion is positioned outside of the sliding range of the slider. This variable resistor outputs a precise resistance having s small variation from a predetermined resistance.
摘要:
An electronic member capable of reducing a loss of light until reaching the end of an operation shaft and enhancing the illumination intensity at the end of the operation shaft, and a rotary electronic component constituting the electronic member. The electronic member includes a rotary electronic component having a hollow hole penetrating in a direction of a shaft, a wiring board on which the rotary electronic component is mounted, an illuminating device mounted on the wiring board at one end of the hollow hole, and a light guide body being inserted in the hollow hole and guiding light emitted from the illuminating device to another end of the hollow hole.
摘要:
Operating rod 21 is provided with a spherical portion 21B that has a polygon shape in the horizontal cross section, which is engaged with a polygonal opening 23C provided above a central opening 23A of a revolving member 23 so that the two items make a same revolution together, yet the operating rod 21 can make a free up-down movement independently. The operating rod 21 has a pushing portion 21D at the lower end; upper surface of which pushing portion 21D is keeping an elastic contact to a middle ring-platform 23B of the revolving member 23 via a washer 4. So, even when the operating rod 21 is positioned slightly aslant, it can perform both revolving and up-down actions smoothly. In an electronic appliance incorporating the revolving operation electronic component of the above structure, the clearance margin to be provided in relation to an operating knob and an aperture for the knob can be made small. Thus the electronic component in accordance with the present invention contributes to offer electronic appliances of high quality-grade with which a smooth feeling of operation is assured.