CN217768989U

CN217768989U - Anti-interference FPC winding displacement structure

Info

Publication number: CN217768989U
Application number: CN202221737485.9U
Authority: CN
Inventors: 李衡均; 李家劲; 段启华
Original assignee: Dongguan Youlian Hengda Optoelectronics Co ltd
Current assignee: Dongguan Youlian Hengda Optoelectronics Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-11-08
Anticipated expiration: 2032-07-05

Abstract

The utility model discloses an anti-interference FPC winding displacement structure, including the winding displacement body, winding displacement body end rigid coupling terminal, the terminal is close to winding displacement body one end outside rigid coupling shielding shell, the shielding shell is kept away from terminal one end rigidity and is cup jointed at this tip of winding displacement, rigid coupling permalloy filler between inside and the terminal of shielding shell, the terminal is kept away from winding displacement body one side bottom surface and is seted up a plurality of contact notches, rigid coupling conductive contact plate in the contact notch, the winding displacement body includes the base plate, two walking portion of base plate top surface and bottom surface rigid coupling respectively, two walking portion keeps away from two metal shielding layers of base plate one side rigid coupling respectively. The utility model discloses the metal shielding layer and the EMI shielding film of net copper product matter have been add on the winding displacement to set up the shield shell in winding displacement and terminal wiring position, will work a telephone switchboard department parcel, improved the suppression and the anti-jamming performance of winding displacement itself to winding displacement radiation emission.

Description

Anti-interference FPC (Flexible printed Circuit) cable arrangement structure

Technical Field

The utility model relates to an electronic circuit technical field specifically is anti-interference FPC winding displacement structure.

Background

The FPC, i.e., a flexible printed circuit board, is a substrate for connecting electronic parts and a medium for signal transmission of electronic products, and may be classified into different types, a single-sided flexible board, a double-sided flexible board, a multi-layered flexible board, and a flexible board, a rigid-flexible combined board, according to the number of layers, as one type of the printed circuit board. The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent performance. The FPC flat cable is mainly used in a plurality of products such as mobile phones, notebook computers, PDAs, digital cameras, LCMs and the like, and has no good radiation resistance and anti-interference capability due to the characteristics of the FPC. The problems do not occur when the device is used in a scene with uncomplicated environmental interference, and once the electromagnetic interference of the environment is complex, phenomena such as abnormal operation of peripheral equipment caused by the fact that the flat cable radiation of the FPC interferes with the peripheral equipment or the radiation emitted by the peripheral equipment interferes with the flat cable of the FPC, touch jumping and the like can occur.

In contrast, the chinese utility model patent with the publication number CN204090271U discloses a FPC shielded flat cable, which includes a FPC substrate, a circuit layer, and a solder resist layer; the circuit layers are arranged on two sides of the FPC substrate, and the solder mask layers are arranged on the outer sides of the circuit layers; the outside of solder mask sets up the shielding layer, the outside cover of shielding layer sets up one deck solder mask.

This shielding winding displacement sets up one deck shielding layer in the solder mask outside of original winding displacement, set up one deck solder mask again in the outside of shielding layer for among the signal transmission process, do not receive other signal interference, do not disturb other signals simultaneously, the winding displacement shielding nature is good, but the shielding performance of winding displacement itself has only been guaranteed, and when the winding displacement is connected with the terminal, the difficult shielding layer tectorial membrane that uses of junction is handled, can lead to the difficult electromagnetic radiation that shields of wiring department, still can appear radiation emission and self receive the phenomenon of interference.

Therefore, an anti-interference FPC flat cable structure is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-interference FPC winding displacement structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the anti-interference FPC flat cable structure comprises a flat cable body, a terminal is fixedly connected with the end part of the flat cable body, the terminal is fixedly connected with a shielding shell at the outer side of one end of the flat cable body, the shielding shell is far away from one end of the terminal and fixedly sleeved on the end part of the flat cable body, permalloy filler is fixedly connected between the inside of the shielding shell and the terminal, a plurality of contact piece notches are formed in the bottom surface of one side of the terminal, far away from the flat cable body, and conductive contact pieces are fixedly connected in the contact piece notches.

Preferably, the flat cable body comprises a substrate, the top surface and the bottom surface of the substrate are fixedly connected with two wire routing parts respectively, one side, away from the substrate, of each wire routing part is fixedly connected with two metal shielding layers respectively, one side, away from the wire routing parts, of each metal shielding layer is fixedly connected with two EMI shielding films respectively, one side, away from the terminals, of the substrate is fixedly connected with a plurality of wire connection parts, and the wire connection parts are electrically connected with the two wire routing parts.

Preferably, one end of the shielding shell close to the flat cable body is sleeved on the outer side of the EMI shielding film, and the permalloy filler is fixedly connected with the EMI shielding film and the end part of the metal shielding layer.

Preferably, the terminal is fixedly connected to the substrate and the end parts of the two routing parts, a routing groove is formed in the position, close to the end parts of the routing parts, of the terminal, and a connecting wire is fixedly connected in the routing groove.

Preferably, the inner side of the notch of the contact piece is fixedly embedded with a wiring guide plate, one end of the connecting lead is fixedly connected and electrically connected with the end part of the wiring part, and the other end of the connecting lead is fixedly connected and electrically connected with the wiring guide plate.

Preferably, the metal shielding layer is mesh copper.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses the metal shielding layer and the EMI shielding film of net copper product matter have been add on the winding displacement to set up the shield shell in winding displacement and terminal wiring position, will work a telephone switchboard department parcel, improved the suppression and the anti-jamming performance of winding displacement itself to winding displacement radiation emission.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the separation structure of the terminal of the present invention;

fig. 3 is an enlarged schematic structural view of a cross-sectional structure near the middle terminal of the present invention.

In the figure: 1. a flat cable body; 2. a terminal; 3. a shield case; 11. a substrate; 12. a routing portion; 13. a metal shielding layer; 14. an EMI shielding film; 15. a wiring portion; 21. a contact blade recess; 22. a conductive contact; 23. a wiring groove; 24. connecting a lead; 25. a wiring guide plate; 31. a permalloy filler.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-3, the present invention provides a technical solution: anti-interference FPC winding displacement structure, including winding displacement body 1, 1 tip rigid coupling terminal 2 of winding displacement body, terminal 2 is close to 1 one end outside rigid coupling shielding shell 3 of winding displacement body, and shielding shell 3 keeps away from the fixed cover of 2 one end positions of terminal and connects at winding displacement body 1 tip, shielding shell 3 inside and terminal 2 between rigid coupling permalloy filler 31, terminal 2 keeps away from 1 one side bottom surface of winding displacement body and sets up a plurality of contact notches 21, rigid coupling conductive contact piece 22 in the contact notch 21, the utility model discloses add the metallic shield layer 13 and the EMI shielding film 14 of net copper material on the winding displacement to set up shielding shell 3 at winding displacement and 2 wiring positions of terminal, wrap up the junction, improved the suppression to winding displacement radiation emission and the anti-jamming performance of winding displacement itself.

Example 2:

referring to fig. 2, the flat cable body 1 includes a substrate 11, two wire portions 12 are fixedly connected to a top surface and a bottom surface of the substrate 11, two metal shielding layers 13 are fixedly connected to sides of the two wire portions 12 away from the substrate 11, two EMI shielding films 14 are fixedly connected to sides of the two metal shielding layers 13 away from the wire portions 12, a plurality of wire portions 15 are fixedly connected to a side of the substrate 11 away from the terminal 2, and the wire portions 15 are electrically connected to the two wire portions 12.

Referring to fig. 3, one end of the shielding shell 3 close to the flat cable body 1 is sleeved outside the EMI shielding film 14, and the permalloy filler 31 is fixedly connected to the end of the EMI shielding film 14 and the metal shielding layer 13.

Referring to fig. 3, the terminal 2 is fixed to the substrate 11 and the ends of the two wire traces 12, a wire slot 23 is formed at a position of the terminal 2 near the ends of the wire traces 12, and a connecting wire 24 is fixed in the wire slot 23.

Referring to fig. 3, the inner side of the contact recess 21 is fixedly embedded in the wiring guide plate 25, one end of the connecting wire 24 is fixedly connected and electrically connected to the end of the routing portion 12, and the other end is fixedly connected and electrically connected to the wiring guide plate 25.

Referring to fig. 2, the metal shielding layer 13 is mesh copper.

Example 3:

the utility model discloses add the metal shield layer 13 and the EMI shielding film 14 of net copper material on the winding displacement to 2 wiring positions at the winding displacement and terminal have set up shielding shell 3, will connect the department parcel, have improved the suppression and the anti-interference performance of winding displacement itself to winding displacement radiation emission.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Anti-interference FPC winding displacement structure, including winding displacement body (1), its characterized in that:

the flat cable comprises a flat cable body (1), a terminal (2) is fixedly connected to the end portion of the flat cable body (1), a shielding shell (3) is fixedly connected to the outer side of one end, close to the flat cable body (1), of the terminal (2), the shielding shell (3) is far away from the end portion of the terminal (2) and fixedly sleeved on the end portion of the flat cable body (1), permalloy fillers (31) are fixedly connected between the inside of the shielding shell (3) and the terminal (2), a plurality of contact notches (21) are formed in the bottom surface of one side, far away from the flat cable body (1), of the terminal (2), and conductive contacts (22) are fixedly connected into the contact notches (21).

2. The anti-interference FPC ribbon cable structure of claim 1, wherein: the flat cable body (1) comprises a substrate (11), the top surface and the bottom surface of the substrate (11) are fixedly connected with two wire routing portions (12) respectively, the wire routing portions (12) are far away from one side of the substrate (11) and fixedly connected with two metal shielding layers (13) respectively, the metal shielding layers (13) are far away from one side of the wire routing portions (12) and fixedly connected with two EMI shielding films (14) respectively, the substrate (11) is far away from one side of a terminal (2) and fixedly connected with a plurality of wire connection portions (15), and the wire connection portions (15) are electrically connected with the two wire routing portions (12).

3. The anti-interference FPC ribbon cable structure according to claim 2, wherein: one end of the shielding shell (3) close to the flat cable body (1) is sleeved on the outer side of the EMI shielding film (14), and the permalloy filler (31) is fixedly connected with the EMI shielding film (14) and the end part of the metal shielding layer (13).

4. The anti-interference FPC ribbon cable structure of claim 1, wherein: the terminal (2) is fixedly connected to the end portions of the substrate (11) and the two wire routing portions (12), a wire routing groove (23) is formed in the position, close to the end portion of the wire routing portion (12), of the terminal (2), and a connecting wire (24) is fixedly connected in the wire routing groove (23).

5. The anti-interference FPC ribbon cable structure according to claim 4, wherein: the inner side of the contact piece notch (21) is fixedly embedded with a wiring guide plate (25), one end of the connecting lead (24) is fixedly connected and electrically connected with the end part of the wiring part (12), and the other end of the connecting lead is fixedly connected and electrically connected with the wiring guide plate (25).

6. The anti-interference FPC ribbon cable structure according to claim 2, wherein: the metal shielding layer (13) is mesh copper.