CN2463928Y

CN2463928Y - Core structure with built-in terminal

Info

Publication number: CN2463928Y
Application number: CN 00225482
Authority: CN
Inventors: 范云光
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-24
Filing date: 2000-08-24
Publication date: 2001-12-05
Anticipated expiration: 2010-08-24

Abstract

The utility model relates to an embedded terminal type iron core structure. An iron core body, the cross section of which is formed into an I shape or a T shape, is put on a connecting wire rack to be sealed and fixed into an I-shaped iron core body by using encapsulation technology. The bottom part of the iron core body is formed into a conductive terminal by using stamping technology, and therefore, after wound by a coil curl and is soldered with tins, the iron core body can be used as a part of an iron core, the surface of which can be applied to adhesion technology (SMD). In the process of manufacturing, the iron core part which is provided by the utility model can cause the conventional complex steps to be simplified, and can cause mass manufacture. Therefore, the utility model has the advantages that the cost can be reduced effectively, the burden for the environment can be reduced.

Description

The core structure of built-in end minor

The utility model is the core structure of built-in end minor, particularly about a kind of made iron core structure-improved of lead frame, encapsulation technology and stamping technology that utilizes.

Commonly use oxide iron core (Ferrite Core),, must be placed on 1000 ℃～1400 ℃ sintering temperature for reaching the demand on the characteristic in surface adhering technology (SMD).Iron core after sintering is finished, adopt following two kinds of methods to make the iron-core coil that is used for SMD in the market:

One, shown in figure one, the settling mode of commonly using lies at the bottom of the iron core in the mode of face (111) to electroplate, the alloy of silver-plated and palladium, make it become twice electrode (112), and after two rear line heads (121) that will be around in the coil (12) of iron core (11) are fixed in tin, promptly become a SMD with iron-core coil (1).The iron-core coil that utilizes this mode to make will be high with the price of palladium because of silver, and the difficult treatment of electroplating wastewater, make cost to reduce, and then make the cost of product improve for it.

Two, shown in figure two (A) and figure two (B), another kind of settling mode system is molded worker's shape iron-core workpiece (21), coil (22) after, the bottom in iron-core workpiece (21), be fixed in a base (23) with conductive electrode (231) with AB glue, also can become a SMD with iron-core coil (2).The iron-core coil that utilizes this mode to make, though can avoid the use of silver and palladium, the part that it has increased pedestal makes processing procedure more complicated, has also increased volume and height, cost can't effectively be controlled.

But wind thus, above-mentioned habit has mode to still have many disappearances, real non-one kindhearted designer, and demand urgently being improved.

The purpose of the utility model promptly is to provide a kind of core structure of built-in end minor, is to utilize lead frame, grave packing technique and stamping technology to make, and so can make in a large number easily, effectively reduces production cost.

A time purpose of the utility model lies at the core structure that a kind of built-in end minor is provided, and can reduce complicated manufacturing process, can not increase the core structure of coil component volume again.

The another purpose of the utility model ties up in the shovel core that a kind of built-in end minor is provided, and is a large amount of when applying to the SMD processing procedure by the made coil of the utility model iron core, can effectively save cost of parts, creates the surcharge of product.

The core structure that is to provide a kind of built-in end minor of another day of the utility model by the iron core of the utility model processing procedure, can avoid utilizing the technology of plating, reduce the burden to environment.

The purpose of this utility model realizes with the following methods.The core structure of this built-in end minor, the iron-core workpiece (41) that contains a built-in end minor worker shape, the two bottom sides limit of this worker's shape iron-core workpiece (41) or bottom upper limb system is provided with two tie points (313,313a), and is provided with two a people embedded conducting terminal in this bottom surface; This iron core center section part is divided into confession coil (5) winding, and two tie points (313) on two-end-point of coil (51) and iron-core workpiece two bottom sides limit join or the two-end-point (51) of this coil also can join with two tie points (313a) of iron-core workpiece bottom upper limb, again these two tie points (313,313a) respectively two conducting terminals (312) with the iron-core workpiece bottom be conducted, after causing this iron-core workpiece to coil (5), can become iron core zero ox for surface adhering technology (SMD).Therefore the utility model system is a cross section iron-core workpiece of I shape or T shape, be placed on the lead frame, and utilization becomes its sealing to packing technique the iron-core workpiece of worker's shape, utilize stamping technology to make the bottom of iron-core workpiece form conducting terminal again, after causing this iron-core workpiece to coil, promptly becoming one can be for the iron core part of surface adhering technology (SMD).

See also the detailed description and the accompanying drawing thereof of following relevant the utility model one preferred embodiment, can further understand the technology contents and the purpose effect thereof of the utility model; The accompanying drawing of relevant this embodiment is:

Fig. 1 is the structural representation of known iron-core coil

Fig. 2 (A) be known iron-core coil in conjunction with schematic diagram

Fig. 2 (B) is the structural representation of known iron-core coil

Fig. 3 is the structural representation of the utility model iron-core coil

Fig. 4 (A)～Fig. 4 (F) is the fabrication steps figure of the core structure of the utility model built-in end minor:

Fig. 5 is by the made iron core coil structure first embodiment schematic diagram of the utility model iron core; And

Fig. 6 is by the made iron core coil structure second embodiment schematic diagram of the utility model iron core.

Among the figure: 1-iron-core coil (silver-plated formula) 11-iron core

111-iron core bottom surface 112-conductive electrode

12-coil 121-the end of a thread

2-iron-core coil (adding base type) 21-worker's shape iron-core workpiece

22-coil 23-pedestal

231-conductive electrode 3-lead frame

The 311-of 31-manufacturing cell groove

312-conducting strip (conducting terminal) 313-tie point

313a-tie point 4-embeds terminal worker shape iron core

41-contains terminal worker shape iron-core workpiece 411-shape iron-core workpiece

412-contains terminal worker shape 5-coil

The core structure bottom

51-end points 6-built-in end minor iron-core coil

See also Fig. 3, processing procedure lead frame schematic diagram for the utility model iron core, by among the figure as can be known, the processing procedure of the utility model iron core, this lead frame (3) are to comprise a plurality of manufacturing cells (31), and each manufacturing cell (31) comprises a groove (311), two conducting strips (312) and two tie points (313), cause in making cocoa and once put a plurality of I shape iron-core workpieces (411) simultaneously, and utilize that the mould encapsulating is made, stamping technology cooperates, and makes its a large amount of manufacturings, saves cost.

See also Fig. 4 (A)～Fig. 4 (F), fabrication steps figure for the core structure of the utility model built-in end minor, shown in Fig. 4 (A) and Fig. 4 (B), this lead frame manufacturing cell (31) provides a groove (311), two conducting strips (312) and two tie points (313), this groove (311) is can embed for I shape iron-core workpiece (411) to fix, conveniently to utilize the fixing usefulness of mould encapsulating; Shown in Fig. 4 (C), when iron-core workpiece embed fixing, and by the mould encapsulating fixing after, will become worker's shape iron-core workpiece (41); Shown in Fig. 4 (D), after worker's shape iron-core workpiece (41) that will be connected in lead frame manufacturing cell by stamping technology thrusts, one of this worker's shape iron-core workpiece (41) side has two conductive electrode (312) and two tie points (313) with retention, and this conductive electrode (312) and tie point (313) are the conducting that links to each other; Shown in Fig. 4 (E), thrust worker's shape iron-core workpiece (41) of back, its conducting strip (312) is to become plumbness with iron core bottom (412), utilizes the press technology that conductive electrode (312) pressing is smooth in iron core bottom (412) at last again, becomes a conducting terminal; Shown in Fig. 4 (F), be worker's shape core structure (4) of the utility model built-in end minor.

See also Fig. 5, by the made iron core coil structure first embodiment schematic diagram of the utility model, by among the figure as can be known, utilize the utility model to embed worker's shape core structure (4) of terminal, coil (5) again, and, be connected in the tie point (313) of worker's shape core structure (4) one sides that embed terminal the two-end-point (51) of coil (5), make coil (5) be communicated with the conductive electrode (312) of iron-core workpiece bottom surface, so also can become one can be for the iron-core coil (6) of SMD use.

The iron-core workpiece of the I shape of the utility model also can change the iron-core workpiece of T shape into, adds the cooperation of lead frame and mould, also can make worker's shape core structure of the utility model.

The iron core structure-improved that the utility model provided when mutually comparing with other located by prior art, has more following advantage:

One, the core structure of the built-in end minor of the utility model is to utilize lead frame, encapsulation technology and punching press skill Art is made, and so can make in a large number easily, effectively reduces production cost.

Two, the core structure of the built-in end minor of the utility model can reduce complicated manufacturing process, can not increase again The core structure that adds the coil volume of part.

Three, the core structure of the built-in end minor of the utility model, by the iron core of the utility model processing procedure, can Avoid utilizing the technology of plating, reduce the burden to environment.

Four, by the made iron-core coil of the utility model iron core, a large amount of when applying to the SMD processing procedure, Can effectively save cost of parts, create the surcharge of product.

Claims

1, a kind of core structure of built-in end minor, the iron-core workpiece (41) that contains a built-in end minor worker shape, it is characterized in that the two bottom sides limit of this worker's shape iron-core workpiece (41) or bottom upper limb system is provided with two tie points (313,313a), and be provided with two embedded conducting terminals in this bottom surface; This iron core center section part is divided into confession coil (5) winding, and two tie points (313) on two-end-point of coil (51) and iron-core workpiece two bottom sides limit join or the two-end-point (51) of this coil also can join with two tie points (313a) of iron-core workpiece bottom upper limb, these two tie points (313,313a) are conducted with two conduction of iron-core workpiece bottom respectively again, after causing this iron-core workpiece to coil (5), can become an iron core part for surface adhering technology (SMD).