CN2580567Y

CN2580567Y - EMI shielding structure for soft row line

Info

Publication number: CN2580567Y
Application number: CN 02285954
Authority: CN
Inventors: 陈世惠; 叶时堃; 倪慕伟
Original assignee: TENRICH INTERNATIONAL CORP
Current assignee: TENRICH INTERNATIONAL CORP
Priority date: 2002-11-14
Filing date: 2002-11-14
Publication date: 2003-10-15
Anticipated expiration: 2012-11-14

Abstract

The utility model relates to an EMI shielding structure of a soft row line. An aluminum foil is combined with a PET via thermosol, and the bottom layer of the PET is coated with thermosol to form a semi-product of an upper shielding layer. In addition, the upper layer of another PET is coated with thermosol to form a semi-product of a lower shielding layer, or another aluminum foil is combined with another PET via thermosol, and then the bottom layer of the PET is coated with thermosol to form a semi-product of another lower shielding layer. Finally, a conducting wire which is composed of a copper wire is arranged between the semi-product of the upper shielding layer and the thermosol of the semi-product of the lower shielding layer. Moreover, a press is additionally exerted for combination, so that the upper shielding layer, the conducting wire and the lower shielding layer form the structure of a soft row line which is orderly composed of the upper shielding layer, the conducting wire and the lower shielding layer. Each aluminum foil is used as a barrier main body for interrupting disordered electric wave messages, and each PET is used as a supporting body. The whole soft row line is made to have the characteristic of preventing the generation of electric fields and magnetic fields.

Description

The EMI masking structure of flexible flat cable

Technical field

The utility model relates to the communication device field, is meant a kind of EMI masking structure of flexible flat cable especially.

Background technology

In general basic computer or other relevant peripheral electronic equipments; use flexible flat cable in order to carry out the signal transmission between device through regular meeting; also because its flexible flat cable and the connection procedure of each device in produced between can be through device itself or electronic component as interference sources such as earth magnetism, magnetic field, electromagnetic waves; so its flexible flat cable itself is except need possess original signal function; itself also need have the anti-system of so-called EMI characteristic, frenzied with the function of avoiding magnetic field, electromagnetic wave to cause, transmit mistake and message unfavorable condition.

Flexible flat cable commonly used mostly is the covering that in advance imposes elargol on the coating epithelium surface of its main body, and be coated with the PU (polyamine fat) that includes the UV initiator in the top layer of elargol, make PU and initiator produce via ultraviolet irradiation again and hand over poly-reaction, and firmly attached to the top layer of elargol, use by elargol conductive bodies is formed anti-making of EMI; Yet this forming process is too numerous and diverse.

Technology contents

The EMI masking structure of the utility model flexible flat cable is promptly by earlier aluminium foil being combined with PET with thermosol, shielding layer is semi-finished product to become upward with PET bottom coated with thermosol again, in addition again with the PET upper strata also coated with thermosol shielding layer is semi-finished product to become down, or aluminium foil combined with PET with thermosol, again PET bottom coated with thermosol is descended the shielding layer semi-finished product to become another kind, to place by the lead that copper cash constituted again between shielding layer semi-finished product and the half-finished thermosol of following shielding layer at last, and exerted pressure in conjunction with it is become from top to bottom in regular turn by last shielding layer, the flexible flat cable structure that lead and following shielding layer are constituted, with by the barrier main body of aluminium foil as blocking-up electric wave noise, and constitute support by PET, and making the anti-characteristic of making of whole flexible flat cable tool electric field and magnetic field, this is its main purpose.

Another purpose of the EMI masking structure of the utility model flexible flat cable can combine with thermosol aluminium foil earlier with PET, again the half-finished PET bottom of shielding layer coated with thermosol is gone up the shielding layer semi-finished product to become, also coated with thermosol is stand-by with shielding layer semi-finished product under becoming with the PET upper strata more in addition, and along with the processing procedure of whole flexible flat cable wire clamp is placed between the half-finished thermosol of upper and lower shielding layer again, and the complete flexible flat cable structure of extrusion forming, to promote the production capacity of whole flexible flat cable.

The EMI masking structure of the utility model flexible flat cable again again a purpose be earlier aluminium foil to be combined with PET with thermosol, again the half-finished PET bottom of shielding layer coated with thermosol is gone up the shielding layer semi-finished product to become, again aluminium foil is combined with PET with thermosol, the shielding layer semi-finished product are stand-by down to become with PET bottom coated with thermosol again, and along with the processing procedure of whole flexible flat cable wire clamp is placed between the half-finished thermosol of upper and lower shielding layer again, the flexible flat cable structure that extrusion forming is complete can promote the production capacity of whole flexible flat cable.

Description of drawings

Fig. 1 is the EMI masking structure cutaway view of the whole flexible flat cable of the utility model;

Fig. 2 is another structure cutaway view of the whole flexible flat cable of the utility model;

Fig. 3 is the manufacturing flow chart of flexible flat cable of the present utility model;

Fig. 4 is a combination schematic diagram of going up half-finished aluminium foil of shielding layer and PET in the utility model;

Fig. 5 goes up the half-finished molding mode schematic diagram of shielding layer in the utility model;

Fig. 6 A, B are the following half-finished molding mode schematic diagram of shielding layer in the utility model;

Fig. 7 is the molding mode schematic diagram of whole flexible flat cable in the utility model.

[figure number explanation]

The A flexible flat cable; The last shielding layer semi-finished product of A1;

Shielding layer semi-finished product under the A2; 10 aluminium foils;

20PET; 30 leads;

40 thermosols.

Specific implementation

The EMI masking structure of the utility model flexible flat cable, the structure of its whole flexible flat cable as shown in Figures 1 and 2, wherein, whole flexible flat cable A is from top to bottom in regular turn by last shielding layer semi-finished product A1, lead 30 and following shielding layer semi-finished product A2 constitute, and its lead 30 is constituted by general copper cash, make its whole flexible flat cable A supply to do outside original signal transmission by lead 30, and can be by the barrier main body of aluminium foil 10 as blocking-up electric wave noise, and be coated with aluminium foil 10 by flexible flat cable A two ends with as current lead-through, and constitute support by PET20, has the flexible flat cable A structure that characteristic is covered in electric field and magnetic field and become, can effectively avoid magnetic field when the practical application, the function that electromagnetic wave causes is frenzied, transmit the generation of mistake and message unfavorable condition.

Moreover, as Fig. 3, Fig. 4 and shown in Figure 5, flexible flat cable structure of the present utility model, be earlier aluminium foil 10 to be combined with PET20 with thermosol 40, again with PET20 bottom coated with thermosol 40 to become shielding layer semi-finished product A1 on, in addition shown in Fig. 3 and Fig. 6 A, again in another PET20 upper strata also coated with thermosol 40 shielding layer semi-finished product A2 is stand-by to become, or aluminium foil 10 combined with PET20 with thermosol 40, shielding layer semi-finished product A2 is stand-by down to become another with PET20 bottom coated with thermosol 40 again, shown in Fig. 6 B, at last more as shown in Figure 7, lead 30 is folded in, following shielding layer semi-finished product A1,40 of the thermosols of A2, and the complete flexible flat cable A structure of extrusion forming.

Because upper and lower shielding layer semi-finished product A1, the A2 of its whole flexible flat cable A can manufacture in advance and finish, combine with actual applied lead 30 in order to the processing procedure that cooperates whole flexible flat cable A and can finish manufacturing of whole flexible flat cable A fast, and then promote the production capacity of whole flexible flat cable A.

The EMI masking structure of the utility model flexible flat cable is by aluminium foil 10 is combined with PET20 with thermosol, shielding layer is semi-finished product A1 on one to become with PET20 bottom coated with thermosol 40 again, in addition again with a PET20 upper strata also coated with thermosol 40 shielding layer is semi-finished product A2 to become, or aluminium foil 10 combined with PET20 with thermosol 40, again PET20 bottom coated with thermosol 40 is descended shielding layer semi-finished product A2 to become another kind, 40 of the last thermosols that will place shielding layer semi-finished product A1 and following shielding layer semi-finished product A2 again by the lead 30 that copper cash constituted, and exerted pressure in conjunction with it is become from top to bottom in regular turn by last shielding layer, the flexible flat cable A structure that lead 30 and following shielding layer are constituted, with by the barrier main body of aluminium foil 10 as blocking-up electric wave noise, and constitute support, and make the characteristic of the anti-system of whole flexible flat cable A tool electric field and magnetic field by PET20.

Claims

1, a kind of EMI masking structure of flexible flat cable, it is characterized in that, its whole flexible flat cable from top to bottom is made of aluminium foil layer, thermosol glue-line, pet layer, thermosol glue-line, lead, thermosol glue-line and pet layer in regular turn, this flexible flat cable combines with thermosol aluminium foil with PET, again PET bottom coated with thermosol is become and go up the shielding layer semi-finished product, shielding layer semi-finished product under also coated with thermosol becomes with another PET upper strata more in addition, this lead places between shielding layer semi-finished product and the half-finished thermosol of following shielding layer.

2, the EMI masking structure of a kind of flexible flat cable as claimed in claim 1, it is characterized in that, its whole flexible flat cable also further comprises thermosol glue-line, aluminium foil layer, and this aluminium foil is combined with PET with thermosol, PET bottom coated with thermosol is become shielding layer semi-finished product down again.

3, the EMI masking structure of a kind of flexible flat cable as claimed in claim 1 or 2 is characterized in that, described lead specifically is made of copper cash.

4, the EMI masking structure of a kind of flexible flat cable as claimed in claim 1 or 2 is characterized in that, but described flexible flat cable two ends also are coated with the aluminium foil of conducting electric current.