SU583488A1

SU583488A1 - Controlled inductance coil

Info

Publication number: SU583488A1
Application number: SU7402086074A
Authority: SU
Inventors: Геннадий Иванович Митрофанов; Юрий Петрович Трондин; Виктор Стефанович Прасолов
Original assignee: Предприятие П/Я М-5985
Priority date: 1974-12-20
Filing date: 1974-12-20
Publication date: 1977-12-05

Description

1one

Изобретенае относитс к радиотехнике и может быть использовано дл настройка колебательных цепей jрадиоаппаратуры, в часгносги дл настройки выходных колебательных депей радиопередатчиков.The invention relates to radio engineering and can be used to tune the oscillatory circuits of radio equipment, in particular, to tune the output oscillating depots of the radio transmitters.

Известна конструкци регулируемой катушки ицду«Етивности, содержаща каркас с обмоткой, кольцевой составной сердечник , части которого вьшолнены из матери алов с различной магнитной проницаемостью и механический привод.The design of an adjustable coil is described. It includes a frame with a winding, an annular composite core, parts of which are made of materials with different magnetic permeability and mechanical drive.

Одаако каркас катушки занимает меньшую половину части кольца, что уменьшает возможность пределы изменени индук- тивности.Odaco coil frame occupies a smaller half of the ring part, which reduces the possibility of limits to the variation of inductance.

Известна также регулируема катушка индуктивности, содержаща каркас с обмогко и сердечник : полукольцевой формы с возможностью вращени внутри каркаса.An adjustable inductance coil is also known, comprising a frame with a chopper and a core: a semi-circular form that can be rotated inside the frame.

Эта катушка вл етс наиболее близкой к. изобретению по технической сущности.This coil is the closest to the invention of the technical essence.

Недостатками этой катушки вл ютс возможное изменение положени сердечника после настройки при фиксации винтами в результате их неравномерной зат жки и несовпадени осей винтов с нормалью к ок ружности сердечника, чго увеличивает неточность настройки, а также неудобство в эксплуатации, заключающеес в необходимости ослабл ть фиксирующие винты перед настройкой и зат гивать после настройки.The disadvantages of this coil are a possible change in the position of the core after adjustment while fixing the screws as a result of their uneven tightening and mismatch of the axis of the screws with the normal to the circumference of the core, which increases the inaccuracy of the adjustment, as well as the inconvenience of the fixing screws before setting and quenching after setting.

Цель изобретени - повышение точности :нас тройки регулируемой катУшки индуктив- нести и удобства ее эксплуатации.The purpose of the invention is to improve the accuracy: we have three tripods of adjustable inductors and ease of use.

Дл этого сердечник выполнен из не менее чем i№yx частей, симметрично закрепленных на половине ведомого колеса, расположенного в направл ющем пазу каркаса и подпружиненного не менее чем в двух j местах в радиальном направ- ении. Причем . каркас вьнголйен с зазором |относительно сердечника , а ось настройки выполнена с воз можностью передачи 1 момента на ведомое колесо с сердечниками по внутре1шему ди аметру.For this, the core is made of at least i # yx parts symmetrically fixed on a half of a driven wheel located in the guide groove of the frame and spring-loaded at least two j places in the radial direction. And. The frame is in alignment with a gap | relative to the core, and the axis of adjustment is made with the possibility of transferring 1 moment to the driven wheel with cores along the inner diameter.

На фиг. 1 схематически изображена предложенна катушка; на 4®г. 2 - то же,, вид сверху.FIG. 1 shows schematically the proposed coil; on 4®g. 2 - the same, top view.

Claims

The core of the inductance coil is half of the yoke, which is made split and consists of two parts 1 and 2, spliced by studs 3 and the drive of winding 4 laid in grooves in order to avoid biasing and closing the turns of the inductance. The core consists of two or more ferrite half-rings 5, symmetrically attached (for example, glued) to the half of the driven wheel 6, which with its outer part extends into the annular groove of the yoke. The inner dimensions of the cage are designed so that, taking into account all the tolerances, there is a gap between the casing walls and the core, ensuring rotation of the core in the cage without friction. To fix the core in the setting position, the driven wheel is spring-loaded in the radial direction. The springs 7 are not less than in two places. To reduce the dimensions, the drive wheel 8, fixed on axis 9, engages with the driven wheel according to the internal diameter pos; one day Parts of the holder together with located on them kakamI | tides and columns for fastening, as well as a driven wheel, are made by pressing from durable high-quality plastics. To ensure high quality of the inductor; All metal parts (axle, studs, springs) are made of non-magnetic materials, such as bronze. The device operates as follows. The rotation of the axis is transmitted to the slave via transmission (per gear). / forest with a fixed core. The core, rotating, pushes or slides out of the coil, causing a change in inductance. Fully removed from the coil core corresponds to the minimum, and fully entered - the maximum value of inductance. Claims of the invention An adjustable inductance coil comprising an annular frame with a winding and a core of a semi-circular form, located on a driven wheel, configured to rotate inside the frame. The skeleton is made with a guide groove, the core consists of two parts symmetrically fixed on the wind wheel, which is located in the guide groove of the frame and is spring-loaded at least in two. radial direction, and the axis of adjustment is set with the possibility of transferring the torque of the Sgo to the driven wheel to its internal diameter, i H 01 F 21 / O6, 1945.

2. USSR author's certificate №326647, cl. H 01 R 21/06, 1972.