TWM277093U - Inductance device with flattened coil - Google Patents

Description

M277093

[Technical field to which the new type belongs] This creation is a flat wire type inductor with choke coils for electronic circuits. [Prior technology] Flat / coil inductors are widely used in electronics as they have a thinned volume, a large conduction area, can withstand large currents, and are easy to assemble. Generally, this inductor is connected to the electronic circuit at the product or system side, and has a choke contribution to the circuit. In > As shown in the first and second figures, a flat coil inductor is usually composed of a flat-wound coil section, and the leg sections 11 and 11 a extending at both ends of the coil section. A magnetically conductive base 2 and a cover 13 are formed by die-casting iron powder, among which 'the magnetically conductive base 12 has an open-type receiving chamber 121, and a shaft portion 1 22 is provided in the receiving chamber for socket connection. The coil section 丨 〇, the pin sections 丨 丨, 丨 丨 & are respectively extended from the sides of the valley chamber 1 2 1 and bent in the direction of the cover 丨 3, and then positioned at the corresponding position of the cover 13 Finally, the support plate 131 is coated with iron powder glue between the magnetically conductive base 12 and the cover 13 to bond the two components into one body. I have found that the above-mentioned conventional flat coil inductor has the following defects: "(1) As far as the material is concerned, the traditional coil part 10 is mainly formed by the" lacquer "of the outer layer of the wire. It is used for insulation to avoid short circuit between the conductive bare wire and the magnetically conductive base 12 made of die-casting iron powder. The problem is that during the forming process of the "enameled wire" through the related jig, the tension of the part Increase and easily cause "cracking" on the "lacquer" surface, making this layer

M277093 3. Creation instructions (2) The relationship and destruction of insulation can easily lead to the situation of conductive bare wires and magnetically conductive bases. 'This not only prevents the inductor from operating normally, but also the system or equipment connected to it. Cause damage. To (:) the magnetically permeable base 12 and the cover 13 made of die-casting iron powder are fragile, and they are prone to rupture during construction or when coils are assembled, making the quality of the joints unstable; especially based on the above-mentioned practice. To fold-the pin ii, Ua is connected to the cover 13: The j ^ th circle is completed because of: ... with a considerable force, so that the ㈡I is guided through the magnetic path_ 口 122 and the cover 13 Affected by this, damage is more likely to occur. Stretch

= After the shaft portion 122 ', the two foot portions 11, 1U, often J. Zhuo, are deformed to the support plate m of the cover body 13 and maintained at Qiu Ping =; = work, which is often subject to the coil section 丨〇 Burning in the circle; = ίί. The result is that the two-pin portion and the two-junction surface Ula cannot be flushed, causing trouble when connecting to the external circuit. _ [New content] Life-style coil inductors "question 4 in the structure, this creation provides a proper solution. Fortunately, the specific content is: The coil part is a flat coiled conductive bare wire. :, Bend straight to the direction of connection with the external circuit, and note an insulation coating on the surface of the coil 4 and the pins, and only expose-part of the pin M277093 IV. Creation Instructions (3) _ Department as and The external electricity together with the coil part is connected to the connection surface, so that the pin part is pre-shaped and used for function. It is also placed in the magnetically conductive base; in this way, the following can be achieved: due to the coil: 丄: the main purpose . The layer will not be covered by the coil part:-Insulation coating is applied, so the insulation can indeed reach the% edge :: J〗 The problem of increased external tension, and the effect of the wire guide magnetic base hibiscus + 1, its * However, it will not cause the short circuit effect of the conductive bare magnetic conductor of the coil part. ^ ^ ^ ^ f ^ ^ ^ ^^ $ "The two-pin portion can be adjusted to a predetermined height before covering it with the coil portion ', so the interface of the two-pin portion can be easily controlled on the same plane to make the connection with the outer sigma circuit smoother; And as long as the shaped coil part and the pin part are put into the magnetically conductive base, the assembly can be completed, which greatly improves the speed and efficiency of the overall assembly of the inductor. As for the detailed technical features and preferred embodiments of this creation, you can borrow It will be understood from the following description and the contents of the drawings, and the description is as follows. [Embodiment] The third to fifth pictures are the main structural diagrams of this creation. As shown in the figure, this creation is mainly composed of a coil section 2 0, the coil portion 20 extends at both ends of the pin portions 21, 22, a magnetic conductive base 30 and a cover 40 made of die-cast iron powder. Please refer to the third figure, the coil portion 2 0 It is a flat loop-wound conductive wire with a hole 201 in the center for placing it in the aforementioned Magnetically conductive base 30, which is connected at both ends

Page 7 M277093, creation instructions (4) The legs 21 and 22 are bent in the direction of connection with the external circuit, and an insulation covering 23 is marked on the outer surface of the coil portion 20 and the two leg portions 21 and 22, For example, insulating resin, and only a part of the pin portion is exposed as the connection surfaces 211 and 212 for connection with an external circuit; among them, 'in order to expose the connection surfaces 211 and 212 to connect with an external circuit, an insulating cover is provided on the surface of the coil portion 20 Between 23 and two joint surfaces 211 and 221, a step 2 3 j, 232 formed with the insulating covering body 2 3 is provided, so that the joint surfaces 211 and 212 of the pin portions 21 and 22 are adjusted in advance ° The height of the connection with the external circuit is maintained, and the two junction surfaces 211 and 212 are maintained on the same plane, so as to facilitate the connection with the SMT surface of the circuit board on the external end, for example. Except as shown in the fourth figure, the pre-shaped pin portions 21 and 22 are sleeved together with the coil portion 20 and placed in the magnetically conductive seat 30. The magnetically conductive base 30 has one or two corresponding sides 3 11 and 3 1 2 in the open type receiving room 31, which is used to receive the coil portion 20, and the receiving room 31 is provided with a shaft portion 32, which is used for socketing. The center hole 201 of the coil portion 20 holds the coil portion 20. The second leg portions 21 and 22 protrude from the two corresponding open sides 311 and 312 of the chamber, and then are covered with a cover 40. This cover body 40 is at the interface 211 with the second leg portions 21 and 22 Corresponding ends of 212 and 212 are provided with avoiding notches 41 and 42 so that the connecting surfaces 211 and 212 of the two pin portions 21 and 22 can be exposed to be electrically connected to the external end circuit. As shown in the fifth figure, after the above-mentioned assembly is completed, the cover 40 and the magnetically conductive base 30 are rejoined, and it is preferable to apply another one on the outer edge of the cover 40 and the magnetically conductive base 30. The insulation layer is packaged to avoid short circuit between the magnetic conductive base 30 and the cover 40 and the external conductive line. According to the above-mentioned preferred embodiment of the present invention, it can be found that the insulating layer is not affected by the coil because the insulating part 23 is applied after the coil part 20 is formed.

Page 8 M277093

邰 The problem of increasing the external tension during the 20-round winding process can surely reach the edge effect. Of course, it will not cause the conductive wire of the coil portion 20 to have a magnetic seat effect; furthermore, the leg portion of the coil 21. It has been folded in 4 and 疋 shape in advance, so that the coil portion 20 does not need to apply any external force when it is sleeved on the shaft portion 32 of the magnetically permeable seat 30, so as to avoid generation between the shaft portion 32 and the cover 4G. The dry side will not damage the fragile structure of the magnetically permeable seat 30 and the cover body 40 which are die-cast from iron powder. In particular, the two pin portions 21 and 22 can be adjusted to a predetermined height before being covered with the coil portion 20, so the joint surfaces 211 and 212 of the two pin portions 21 and 22 can be easily controlled on the same plane. , So that the connection with external circuits (such as SMT surface bonding) will be smoother; and as long as the shaped coil section 20 together with the pin sections 21 and 22 are set into the magnetically conductive base 30, the assembly work can be completed. Improving the speed and efficiency of the overall assembly of the inductor has great benefits and contributions. For this reason, the creators filed patent applications in accordance with the law. However, the above is only a preferred embodiment of this creation, and is not intended to limit the scope of implementation of this creation. That is, all equivalent changes and modifications based on the contents of the patent scope of this creation shall be the technical scope of this creation. , And is limited by the following claims for patent coverage.

Page 9 M277093 Simple explanation of the diagram [Simplified explanation of the diagram] The first diagram is an exploded view of a conventional flat coil inductor. The second figure is a combined schematic diagram of a conventional flat coil inductor. The third figure is an external view of the coil part and the pin part of this creation. The fourth figure is an exploded view of the main components of this creation. The fifth picture is the appearance of this creation. [Description of main component symbols] 20 Coil part # 2 01 Center hole of coil part

Page 10, 21, 22 Pins 211 ^ 212 Pin contacting surface 23 Insulating cover 231 ^ 232 Ladder 30 Magnetically conductive base 31 Storage chamber 311 ^ 312 Magnetically conductive open two opposite sides 32 Shaft 40 Lid 41, 42 Avoidance angle of lid

Claims (1)

M277093 5. Scope of patent application 1. An inductor is composed of a coil part, pin portions extending at both ends of the coil part, a magnetically conductive base and a cover body; of which, the coil part is a flat-winding type The conductive wire is bent at the ends of the two ends toward the direction of connection with the external circuit, and an insulation covering is injected on the outer surface of the coil portion and the pin portion, and only a part of the pin portion is exposed for conducting with the external circuit. The contacting surface is thus integrally sleeved with the pre-shaped pin portion and the coil portion in the magnetic conductive seat, and sealed with a cover. 2. The inductor according to item 1 of the scope of patent application, wherein 'the coil portion has a central hole. • The inductor according to item 2 of the scope of patent application, wherein the magnetically permeable seat has a receiving chamber for receiving the coil part, and a shaft part for receiving the central hole of the coil part for positioning. The coil section. 4. The inductor according to item 1 of the scope of patent application, wherein a stepped platform formed with the insulating covering body is provided between the insulating covering body on the surface of the coil portion and the interface between the two pin portions. . 5. The inductor according to item 1 of the scope of patent application, wherein the cover body is provided with an avoidance notch at the corresponding end of the interface with the two-pin portion, so that the interface of the two-pin portion can be exposed and The external circuit is connected. 6 ^ The inductor according to item 1 of the scope of patent application, wherein the structure of the magnetically conductive base and the cover is die-cast from iron powder. 7. The inductor according to item 6 of the scope of patent application, wherein the cover is packaged with an insulation layer on the outer edge of the magnetically conductive base to prevent the magnetically conductive base and the cover from being externally connected. The line constitutes a short circuit. 8. The inductor as described in item 丨 of the patent application scope, wherein the insulation package M277093 V. Scope of patent application Cover is made of resin material Φ ill Page 12