CN210183634U

CN210183634U - High-resistance flexible circuit board

Info

Publication number: CN210183634U
Application number: CN201920985448.1U
Authority: CN
Inventors: Yan Shi; 石艳; Huanzhou Fang; 方桓周
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-03-24
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses a high resistance flexible line way board, spread the layer including last shielding layer and last copper, it is equipped with the fixed plate to go up shielding layer top surface, and has seted up the fixed orifices on one side of fixed plate surface, it has the copper foil to go up shielding layer bottom surface and lie in the laminating of fixed plate below, and the copper foil side is equipped with the fin, the hole of stepping down has been seted up to copper foil surface one side, the laminating of copper foil below surface has last copper to spread the layer. The utility model discloses in, this flexible line way board is provided with copper and spreads layer, lower copper and spread layer and copper foil piece, and the last copper that sets up is spread layer, lower copper and is spread the layer and be latticed copper and spread the structure, has strengthened its bending resistance ability, excessively cushions combining the fin that copper foil piece both sides set up, fine improvement flexible line way board's the performance of buckling, avoided flexible line way board because of frequently buckling in fixed juncture, and lead to the cracked defect of flexible line way board to the life of flexible line way board has been prolonged.

Description

High-resistance flexible circuit board

Technical Field

The utility model relates to a circuit board technical field especially relates to a high resistance flexible line way board.

Background

Flexible circuit boards, also known as "flexible boards," are printed circuits made from flexible, insulating substrates. Flexible circuits provide excellent electrical performance, meet design requirements for smaller and higher density packaging, and also help reduce assembly processes and enhance reliability. The flexible circuit board is a solution to meet the requirements of miniaturization and mobility of electronic products. The flexible circuit board can be freely bent, wound and folded, can bear millions of dynamic bending without damaging the lead, can be randomly arranged according to the space layout requirement, and can be randomly moved and stretched in a three-dimensional space, so that the integration of component assembly and lead connection is achieved, the size and the weight of an electronic product can be greatly reduced, and the flexible circuit board is suitable for the requirements of the development of the electronic product towards high density, miniaturization and high reliability.

The existing flexible circuit board has poor shielding performance, when the flexible circuit board is used in a high-frequency circuit, the flexible circuit board cannot meet the electromagnetic shielding use without radiation generated by a wiring pattern or external interference noise influence, besides, when the existing flexible circuit board is actually used, the bending and bending of the flexible circuit board basically have no potential safety hazard, but the circuit fracture phenomenon is easy to occur at a fixed junction, particularly the damage of the flexible circuit board is easy to be caused in the pulling process, particularly, the more the number of integrated layers is, and when the number of circuits is more, the scrapping of the whole flexible circuit board is easy to be caused by excessive pulling action.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a high-resistance flexible circuit board.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a high resistance flexible line way board, includes shielding layer and last copper and spreads the layer, it is equipped with the fixed plate to go up shielding layer top surface, and fixed plate surface one side has seted up the fixed orifices, it has the copper foil piece to go up shielding layer bottom surface and is located the laminating of fixed plate below, and the copper foil piece side is equipped with the fin, the hole of stepping down has been seted up to copper foil piece surface one side, copper foil piece below surface laminating has last copper to spread the layer, and goes up copper and spread the laminating of layer bottom surface and have the substrate, the laminating of substrate bottom surface has lower copper to spread the layer, and the lower copper is spread the layer below and is equipped.

Preferably, the number of the copper foils is multiple, and an adhesive filling layer is arranged between every two copper foils in the horizontal direction and positioned on the bottom surface of the upper shielding layer.

Preferably, the fixed plate is equipped with a plurality ofly altogether, and about every two fixed plates of vertical direction are about substrate symmetric distribution, tensile board is installed to below fixed plate bottom, and tensile board one end top is located one side between two upper and lower fixed plates and is equipped with connecting portion.

Preferably, frames are arranged on two side edges of the upper shielding layer and the lower shielding layer, and the frames are symmetrical about a horizontal central line of the upper shielding layer and the lower shielding layer.

Preferably, the fixing plates are of a step-shaped structure with a small upper part and a large lower part, and a tensile section is formed between every two adjacent fixing plates in the horizontal direction.

Preferably, the fins are provided in plurality, and the plurality of fins are symmetrical about a horizontal center line of the copper foil.

Preferably, the length of the copper foil is smaller than that of the fixing plate, and the width of the copper foil is larger than that of the fixing plate.

Compared with the prior art, the utility model has the advantages that; firstly, the flexible circuit board is provided with an upper copper laying layer, a lower copper laying layer and a copper foil, wherein the upper copper laying layer and the lower copper laying layer are both of a grid type copper laying structure, the bending resistance of the flexible circuit board is enhanced, fins arranged on two sides of the copper foil are combined for excessive buffering, the bending performance of the flexible circuit board is well improved, and the defect that the flexible circuit board is broken due to frequent bending of the flexible circuit board at a fixed junction is avoided, so that the service life of the flexible circuit board is prolonged The lower shielding layer is made of metal non-woven fabrics or metal woven fabrics, the shielding effect is good, the upper shielding layer and the lower shielding layer are tightly attached to the upper surface and the lower surface of the flexible circuit board through the adhesive filling layer, the bonding performance is good, and the shielding layer can not be damaged due to frequent bending while achieving a good shielding effect.

Drawings

Fig. 1 is a schematic structural diagram of a high-resistance flexible circuit board according to the present invention;

fig. 2 is a cross-sectional view of a high resistance flexible printed circuit board according to the present invention;

fig. 3 is a cross-sectional view of a high resistance flexible printed circuit board according to the present invention;

fig. 4 is a schematic structural view of a fixing plate of a high-resistance flexible printed circuit board according to the present invention;

fig. 5 is a schematic diagram of a copper foil structure of a high-resistance flexible printed circuit board according to the present invention.

Illustration of the drawings:

1-upper shielding layer, 2-adhesive filling layer, 3-upper copper laying layer, 4-base material, 5-lower copper laying layer, 6-lower shielding layer, 7-copper foil, 8-fixing plate, 9-tensile plate, 10-connecting part, 11-frame, 12-fixing hole, 13-fin and 14-abdicating hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, a high-resistance flexible circuit board includes an upper shielding layer 1 and an upper copper layer 3, a fixing plate 8 is disposed on the upper surface of the upper shielding layer 1, a fixing hole 12 is disposed on one side of the surface of the fixing plate 8, a copper foil 7 is attached to the bottom surface of the upper shielding layer 1 below the fixing plate 8, fins 13 are disposed on the sides of the copper foil 7, a relief hole 14 is disposed on one side of the surface of the copper foil 7, the upper copper layer 3 is attached to the surface of the lower portion of the copper foil 7, a base material 4 is attached to the bottom surface of the upper copper layer 3, a lower copper layer 5 is attached to the bottom surface of the base material 4, and a lower shielding layer 6 is disposed below.

The copper foil sheets 7 are provided with a plurality of copper foil sheets, an adhesive filling layer 2 is arranged between every two copper foil sheets 7 in the horizontal direction and positioned on the bottom surface of the upper shielding layer 1, the fixing plates 8 are provided with a plurality of copper foil sheets, and every two fixed plates 8 in the vertical direction are symmetrically distributed up and down relative to the base material 4, the bottom of the lower fixed plate 8 is provided with a tension-resistant plate 9, a connecting part 10 is arranged at one side between the upper fixing plate 8 and the lower fixing plate above one end of the tensile plate 9, frames 11 are arranged at two sides of the upper shielding layer 1 and the lower shielding layer 6, the frame 11 is symmetrical about the horizontal central line of the upper shielding layer 1 and the lower shielding layer 6, the fixing plate 8 is of a step-shaped structure with a small upper part and a big lower part, and a tensile section is formed between two adjacent fixing plates 8 in the horizontal direction, a plurality of fins 13 are arranged, and the plurality of fins 13 are symmetrical about a horizontal center line of the copper foil 7, the length of the copper foil 7 is smaller than that of the fixing plate 8, and the width of the copper foil 7 is larger than that of the fixing plate 8.

The working principle is as follows: when in use, the flexible circuit board is provided with the fixed plates 8 and the tensile plates 9, the fixed plates 8 can be fixed on the tensile plates 9 through screws, and the flexible circuit board forms a tensile section between the two fixed plates 8, so that the bending of the flexible circuit board is not influenced, the scrapping of the whole flexible circuit board caused by pulling action is avoided, the upper copper laying layer 3 and the lower copper laying layer 3 which are arranged simultaneously are both of a grid type copper laying structure, the bending resistance of the flexible circuit board is enhanced, the fins 13 arranged on two sides of the copper foil 7 are combined for over-buffering, the bending performance of the flexible circuit board is well improved, the defect that the flexible circuit board is broken due to frequent bending of the flexible circuit board at a fixed junction is avoided, the service life of the flexible circuit board is prolonged, the upper shielding layer 1 and the lower shielding layer 6 which are arranged are made of metal non-woven fabrics or metal woven fabrics, the shielding effect is good, the upper shielding layer 1 and the lower shielding layer 6 are tightly attached to the upper surface and the lower surface of the flexible circuit board through the adhesive filling layer 2, the bonding performance is good, and the shielding effect is good, and meanwhile, the flexible circuit board cannot be damaged due to frequent bending.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a high resistance flexible line board, includes shielding layer (1) and last copper and spreads layer (3), its characterized in that, it is equipped with fixed plate (8) to go up shielding layer (1) top surface, and fixed plate (8) surface one side has seted up fixed orifices (12), it has copper foil piece (7) to go up shielding layer (1) bottom surface and is located fixed plate (8) below laminating, and copper foil piece (7) side is equipped with fin (13), hole (14) of stepping down has been seted up to copper foil piece (7) surface one side, copper foil piece (7) below surface laminating has last copper to spread layer (3), and goes up copper and spread layer (3) bottom surface laminating and have substrate (4), substrate (4) bottom surface laminating has lower copper to spread layer (5), and lower copper spreads layer (5) below and is equipped with lower shielding layer (6).

2. The high-resistance flexible printed circuit board according to claim 1, wherein the copper foil (7) is provided in plurality, and an adhesive filling layer (2) is provided between every two copper foils (7) in the horizontal direction and on the bottom surface of the upper shielding layer (1).

3. The flexible printed circuit board according to claim 1, wherein the number of the fixing plates (8) is multiple, and every two fixing plates (8) are vertically and symmetrically distributed with respect to the substrate (4), the bottom of the lower fixing plate (8) is provided with a tension plate (9), and one end of the tension plate (9) above the position between the upper and lower fixing plates (8) is provided with a connecting portion (10).

4. The high-resistance flexible circuit board according to claim 1, wherein frames (11) are arranged on two side edges of the upper shielding layer (1) and the lower shielding layer (6), and the frames (11) are symmetrical with respect to a horizontal center line of the upper shielding layer (1) and the lower shielding layer (6).

5. The flexible printed circuit board of claim 1, wherein the fixing plates (8) have a step-like structure with a small top and a large bottom, and a tensile section is formed between two adjacent fixing plates (8) in the horizontal direction.

6. A highly resistive flexible wiring board according to claim 1, wherein the plurality of fins (13) is provided in common, and the plurality of fins (13) are symmetrical with respect to the horizontal center line of the copper foil (7).

7. A highly resistive flexible wiring board according to claim 1, wherein the length of the copper foil (7) is smaller than the length of the fixing plate (8), and the width of the copper foil (7) is larger than the width of the fixing plate (8).