Patent Application
20130076472
1. Field of the Invention
The invention relates to a super-thin filter structure, and more particularly, to a super-thin filter structure that is easy to assemble and perform working, and is industrial applicable in a wide range.
2. Description of the Prior Art
Since in the process of transmission, the general power or electronic signal has to pass through a media with inconsistent impedance that causes various interferences, the power or electronic signal after the interference and attenuation will generate various noises and affect the normal performance of the computer and various electronic products. Therefore, various filters capable of preventing the electromagnetic interference (EMI) and filtering the noise are widely utilized in various electrical facilities such as computer, television, and audio-video devices.
For example, a utility model patent no. M401845 “Multi-function Power Source Filter” of the patent publication of Republic of China that includes a positioning structure, a plurality of bobbins, a first coil, and a second coil; the positioning structure has a plurality of installation spaces and a plurality of conductance leads positioned at the periphery of the positioning structure. Each of these bobbins securing respectively in the installation spaces has a fist axis part and a second axis part. The first coil spans across different bobbins and winds around the first axis part while the second coil spans across different bobbins and winds around the second axis part, thereafter, combines together to be connected to these seats through the first coil and the second coil. In this way, the applicable power or current flow of a filter can be amplified by winding a relatively longer or larger in wire diameter through the first axis part and the second axis part of the plurality of bobbins to meet the requirements of electric facility with large power and large current. However, this kind of structure has the following shortcomings in application:
Another example is a utility model patent no. M400160 “Super-thin Type of LED Driven Multi-function Common Mode Inductance Power Source Filter” of the patent publication of Republic of China. It includes a base and a magnetic core carried by the base where the magnetic core has two parallel bases and two terminals that are connected respectively to the two wire-winding posts at the bases. Its feature lies in the fact that the wire-winding post includes two first surfaces which are mirror-symmetrical with respect to the center of the wire-winding post and a wire-winding post thickness defined by the fact that the width of the wire-winding post along the first axis is greater than the space between the outer edges of the two first surfaces. Through the above-mentioned technical features, the wire-winding post is set to be in elliptical or rectangular shape which makes the type of the wire-winding post form a shape that it is slim in one dimension while narrow in another dimension. In this way, the thickness of the wire-winding post can be compacted further, making the overall thickness of the power source filter diminish and vacate more space for the product, thereby, the size of the product can be designed to be further diminished.
Although the wire-winding posts of the magnetic core structure of the patent has the shape with non-circular cross-section which is capable of improving the shortcoming that if the wire is not tightly drawn due to negligence, it will make the previous winding wire loose in great amount during the process of coil winding, it inevitably has the occurrence of the above-mentioned relevant shortcomings since it still has the design of a single wire channels and protrudent leads.
Therefore, just how to resolve the above-mentioned problems has become an urgent issue to seek for an improving program in the industry.
In light of the above-mentioned disadvantages of the prior art, the invention provides a super-thin filter structure that is capable of overcoming the shortcomings of the prior art, satisfying the requirements of the industry, as well as improving the competitiveness in the market. It aims to ameliorate at least some of the disadvantages of the prior art or to provide a useful alternative.
The primary objective of the invention is to provide a super-thin filter structure in which, under the premise of basic thinner design to lower the height of the filter structure, a partitioning flange is furnished in the middle section of wire-guiding channels for wire-winding to provide a starting position for the coil to wind from the center toward both sides, thereby to simplify the wire-winding operation.
The secondary objective of the invention is to provide a super-thin filter structure in which a truncated angle part is furnished respectively at each end angle of the iron core, and the truncated angle parts can correspondently provide a base with a wire-guiding post to efficiently save the occupied space.
The third objective of the invention is to provide a super-thin filter structure in which each wire-guiding channel of the lead frame is flat and thin in cross-sectional shape such that if the wire is not tightly drawn due to negligence, the previous winding wire will not loose in great amount during the process of coil winding, thereby the subsequent sorting-out time and spirit can be lowered.
To achieve the above-mentioned objective, a super-thin filter structure of the invention 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.
In accordance with the above-mentioned structure, protrudent partitioning flanges are furnished in the middle section of the wire-guiding channels to be used as the starting positions for winding the wire of a coil from the center toward both sides.
In accordance with the above-mentioned structure, a protrudent stopping plate is furnished at the periphery of the containing concave part (11) of the base.
In accordance with the above-mentioned structure, two oppositely disposed positioning indentations are furnished at the stopping plates.
In accordance with the above-mentioned structure, a channel at the iron core is furnished in the direction of the extension of the corresponding two oppositely disposed positioning indentations of the base
In accordance with the above-mentioned structure, an engaging part is furnished at the periphery of the penetrating hole and an engaged part is furnished at the periphery of the center salient part for connecting to the engaging part
In accordance with the above-mentioned structure, the engaging part and the engaged part can also be a circumferential concave step, circumferential convex step that are mutually embedded.
In accordance with the above-mentioned structure, a wire-guiding post at the base is furnished correspondently to each of the truncated angle parts of the iron core for connecting to the coils.
The accomplishment of this and other objectives of the invention will become apparent from the following description and its accompanying drawings of which:
As shown again in
As shown also in
In conclusion, since one can have the partitioning flanges (151), (311) as starting points to wind wires around the two sides, the wires is capable of retaining a relatively shorter length beforehand to facilitate the simplifying winding operation, and the upper cover (3) is covered on the base (1) to form the lead frame (A), the super-thin filter structure of the invention is simple and convenient in assembling work. In the mean time, by making use of the iron core (2) on the two sides of the penetrating hole (22), the super-thin filter structure of the invention is capable of forming a structural design of a long, flat, and thin in cross-sectional shape that can spend less time and effort in post-processing work since once the wire-winding operator is loosing in winding, the already wound wire so far won't become loose in great amount, thereby the super-thin filter structure of the invention is capable of making the wire winding work more efficient. What is more, since the wire-guiding posts (14) at the base (1) are furnished at the truncated angle parts (23) of the iron core (2) without protruding out of the side surfaces of the base (1), the super-thin filter structure of the invention is capable of avoiding to occupy excessive larger space, thereby can improve the overall space utilization. Consequently, the super-thin filter structure of the invention substantially has the efficacies of being compact in volume, easy ino assembling work, thereby possesses the patentability of an invention.
It will become apparent to those people skilled in the art that various modifications and variations can be made to the structure of the invention without departing from the scope or spirit of the invention. In view of the foregoing description, it is intended that all the modifications and variation fall within the scope of the following appended claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 100217872 | Sep 2011 | TW | national |
