YUJING TECHNOLOGY CO., LTD. Patent applications |
Patent application number | Title | Published |
20150302979 | STRUCTURE OF TRANSFORMER - An improved structure of a transformer includes a bobbin covering at least a portion of a magnetic core set which has a magnetic loop passing through the bobbin, wherein winding grooves and at least one connecting portion extending sideways are provided on the outer peripheral side of the bobbin, and a plurality of notches with lateral openings are provided on the connecting portion. Coils are wound in the winding grooves of the bobbin. The coils have at least a plurality of line ends, each line end passing through a different notch. One positioning pin is embedded in each of the winding grooves near the lateral opening. The positioning pins hold the respective line ends in place by pressing against them. A casing is fitted on the outer peripheral side of the coils to create separation between the coils and the magnetic core set. The casing is provided with a hollow opening such that the outer peripheral side of the coils facing the airflow is exposed to improve the overall heat dissipating efficiency. | 10-22-2015 |
20150302978 | BOBBIN STRUCTURE WITH WINDING GROOVES FOR ADJUSTING COUPLING - A bobbin structure with winding grooves for adjusting coupling at least includes: a bobbin body, a hole provided in the bobbin body for allowing magnetic wires to pass through, and at least three separated winding grooves with different lengths provided around the outer peripheral side of the hole. The primary winding (or the secondary winding) of the coils of a transformer is selectively wound into one of the winding groove, while the secondary windings (or the primary windings) are wound into the rest of the winding grooves. By altering the numbers of turns of the secondary windings (or the primary windings) distributed in the winding grooves, different coupling effects can be achieved with respect to the primary winding (or the secondary winding). As a result, the transformer leakage inductance and the output impedance can be conveniently adjusted. The design of multiple grooves also reduces the stray capacitances of the windings, thereby increasing the bandwidth of the transformer. | 10-22-2015 |
20150300590 | BEAM-CONTROLLABLE HEADLIGHT - A beam-controllable headlight has a lamp base, a first reflector and a second reflector. A lighting-emitting panel with a light source is mounted on the rear portion of the lamp base. The first reflector is mounted on the rear portion of the lamp base and has a reflective surface facing the rear portion. The second reflector has two end points. A normal of the light-emitting panel passes through one of the end points of the second reflector, and an acute angle is included between the normal of the light-emitting panel and a straight line passing through the other end point and a point on the light-emitting panel defining the normal of the light-emitting panel. Light beams are reflected twice to rule out scattering light generated above a cutoff line of the headlight and enhance brightness under the cutoff line. | 10-22-2015 |
20140347875 | LED CAR LIGHT WITH ENHANCED COOLING EFFECT - An LED car light with enhanced cooling effect has a light shell, a fixing base, an LED light module and a reflecting cover. The outer wall extends from the edge of the rear wall and surrounds the rear wall, wherein the outer wall has a cooling section. The fixing base is mounted in the light shell and corresponding in position to the cooling section. The LED light module is mounted on the fixing base and has a base board, a first LED light source and a second LED light source, wherein the base board is in thermal contact with the cooling section of the light shell. The first LED light source and the second LED light source are mounted on the base board. A cooling efficiency of the LED car light is increased due to the thermal contact between the cooling section and the base board. | 11-27-2014 |
20140266559 | STRUCTURE OF TRANSFORMER'S IRON CORE - An improved structure of transformer's iron core mainly has an iron core main body, having a salient main core part with a rectangular horizontal cross-section, furnished at the center part thereof. The main core part has a pair of oppositely configured side wing parts furnished at the outside thereof. A containing circumferential channel formed between the main core part and the side wing parts has a pair of oppositely configured side openings making the containing circumferential channel form communicative exits toward the outside through the two side openings. By employing the salient main core part with a rectangular-shaped horizontal cross-section, the invention is capable of forming longer outer circumference to effectively increase the area of the magnetic flux thereof under the premise of same bobbin. Moreover, in association with the relatively larger side openings that are capable of providing lead frame containing in the containing ring-trench to be outwardly connected to a relatively wider wire connecting seats, the invention is capable of satisfying the required specification of multiple wire-drawing. | 09-18-2014 |
20140266540 | STRUCTURE OF TRANSFORMER'S LEAD FRAME - An improved structure of transformer's lead frame includes at least a lead frame module consisting of a lead frame main body and a lead frame cover, the lead frame main body has a through hole furnished at the center thereof; a bobbin formed at the side of the circumference of the through hole, and a pair of oppositely configured and reversely salient extension parts furnished at sides of the circumference of the through hole, each of the extension parts is combined to the mid-section of the wire connecting seats that have a plurality of wire connecting posts, a plurality of clip indentations are furnished at intervals and at the mid-section of the edge of the two sides of the corresponding extension parts and at the positions covered by the width of the corresponding extension parts. | 09-18-2014 |
20140266528 | STRUCTURE OF TRANSFORMER - An improved structure of transformer includes a lead frame main body ( | 09-18-2014 |
20130147594 | Transformer Structure Having Double-axis Iron Core - A transformer structure having double-axis iron core is disclosed. The iron core structure mainly includes an iron core main body that has a base. The base has a parallel salient side convex part furnished respectively at the two opposite side edge thereof, and has a chamfered part furnished respectively at the two end parts corresponding to the side convex part thereof. It utilizes two iron core main bodies to be oppositely combined. In association with different shapes of coil, it is capable of forming various transformer structures and possesses a variety of combination, and is capable of adapting to various requirements of the product. | 06-13-2013 |
20130076472 | Super-thin Filter Structure - A super-thin filter structure mainly has a channel furnished in the iron core with a penetrating hole furnished in the middle section thereof; a truncated angle parts is furnished at the end angles of the iron core; a containing concave part for containing the iron core is furnished and a center seat having a penetrating hole is furnished at the center thereof for placing into the penetrating hole of the iron core; a wire-guiding channels is also furnished at the bottom of the base; an upper cover is placed into the channel, and a center salient part having a penetrating hole is capable of placing into the penetrating hole and touching the center seat making the upper cover to clip the iron core in coordination with the base; a wire-guiding channels together with the wire-guiding channels is capable of simultaneously providing the winding of a coil. | 03-28-2013 |
20080310187 | LIGHT GUIDE DEVICE FOR VEHICLE LAMPS - A light guide device has a body and multiple grooves. The body has a radiation surface and a flat surface formed oppositely to the radiation surface. The grooves are formed inward from the flat surface into the body, and each groove is cambered, is separated from adjacent grooves with intervals and has a curvature. The grooves in a center segment of the body have the same curvature larger than the curvatures of other grooves. When light beams emit to the grooves, the light beams are refracted toward and outward the radiation surface by the grooves. Larger curvature of the groove results in smaller scatter angle of the light beams refracted by the groove. The refracted light beams having smaller scatter angle result in higher illumination. | 12-18-2008 |