CN211181693U

CN211181693U - Flexible flat wire of FFC

Info

Publication number: CN211181693U
Application number: CN201922227500.XU
Authority: CN
Inventors: 陈宣新; 卓宗辉
Original assignee: Yueqing Precision Electronic And Electrical Appliance Co ltd
Current assignee: Yueqing Precision Electronic And Electrical Appliance Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-08-04
Anticipated expiration: 2029-12-12

Abstract

The utility model relates to a signal transmission technical field, concretely relates to flexible flat line of FFC. The utility model discloses a conductor, the conductor comprises the copper conductor of multirow, the insulating layer has all been laminated on two sides about the conductor, two terminals are installed at the conductor both ends, install the stiffening plate between terminal and the conductor, multirow golden finger is all installed at the reverse side of stiffening plate to two terminals, multirow golden finger interconnects with the multirow copper conductor of conductor, the left and right both sides of stiffening plate are equipped with the recess, the insulating layer covers two aluminium foils of leading in the junction of stiffening plate and conductor, two aluminium foils of leading are in same one side at the stiffening plate. The beneficial effects of the utility model are that the volume is littleer, thickness is thin, flexible, transmission bandwidth is high, contact resistance is little, convenient to detach, difficult oxidation, longe-lived, anti-interference, have the blind plug function.

Description

Flexible flat wire of FFC

Technical Field

The utility model relates to a signal transmission technical field, concretely relates to flexible flat line of FFC.

Background

A Flexible Flat Cable (FFC) is a Flat and Flexible Flat Cable formed by bonding a Flat and Flexible conductor, usually a tin-plated pure copper wire, with a thin and Flexible adhesive film or paper film at a high temperature. The flexible communication cable has the advantages of flexibility, thin thickness, small wiring space and the like, and is suitable for internal communication among various electrical appliances.

With the localization of the panel of the television, the cost of the television is rapidly reduced, the larger the screen is, the higher the corresponding playing resolution and the code rate of sound are greatly improved, and meanwhile, the television is thinner and thinner, so that higher requirements are provided for data transmission between electrical appliances, such as smaller size, thin thickness, flexibility, high transmission bandwidth, small contact resistance, convenience in disassembly, difficulty in oxidation, long service life, interference resistance and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the background art, the utility model provides a flexible flat wire of FFC.

The technical scheme of the utility model is that: the conductor comprises a conductor, the conductor comprises the copper wire of multirow, the insulating layer has all been laminated on two sides about the conductor, the terminal is all installed at the conductor both ends, install the stiffening plate between two terminals and the conductor, multirow golden finger is all installed at the reverse side of stiffening plate to two terminals, multirow golden finger and the multirow copper wire interconnect of conductor, the left and right both sides of stiffening plate are equipped with the recess, the insulating layer covers two aluminium foils of leading in the junction of stiffening plate and conductor, two aluminium foils of leading are in same one side at the stiffening plate.

Preferably, the insulating layer divide into first insulating layer and second insulating layer, first insulating layer and multirow golden finger homonymy and first insulating layer towards the outside for the printing face, second insulating layer and stiffening plate homonymy and second insulating layer towards the outside for the blank face, the second insulating layer is pasted with black mylar aluminium foil on the blank face with the stiffening plate homonymy.

Preferably, the insulating layer and the reinforcing plate are folded to form a folded angle so that the two terminals are at 90 degrees to each other.

Preferably, foam cotton glue is pasted between the contact surfaces of the hollow white surface and the printing surface in the folded corner, and acetate cloth is wrapped outside the folded corner.

Preferably, the width of the first terminal is different from the width of the second terminal, and the pitch of the first gold fingers on the first terminal is different from the pitch of the second gold fingers on the second terminal.

Preferably, the first gold finger on the first terminal is oriented in the same direction as the second gold finger on the second terminal.

Preferably, the conductor, the first golden finger and the second golden finger are coated with plating layers.

Preferably, the plating layer of the conductor is nickel plating, the thickness of the plating layer of the conductor is more than or equal to 40 μm, the plating layers of the first golden finger and the second golden finger are both gold plating, and the thickness of the plating layers of the first golden finger and the second golden finger is more than or equal to 3 μm.

Preferably, the insulating layer is an insulating film with a thickness of 60 μm, the parameters of the insulating layer are 60V, 105 ° and 0.6A, the reinforcing plate is made of PET, and the reinforcing plate is provided with black lines in the grooves.

The beneficial effects of the utility model are that the volume is littleer, thickness is thin, flexible, transmission bandwidth is high, contact resistance is little, convenient to detach, difficult oxidation, longe-lived, anti-interference, have the blind plug function.

Drawings

Fig. 1 is a front view of a first embodiment of the present invention.

Fig. 2 is a bottom view of the first embodiment of the present invention.

Fig. 3 is a top view of the first embodiment of the present invention.

Fig. 4 is a structural diagram of a second embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the first terminal of the present invention.

Fig. 6 is a schematic structural diagram of a second terminal according to the present invention.

In fig. 1 to 6, an insulating layer 1, a first insulating layer 11, a second insulating layer 12, a first terminal 21, a second terminal 22, a reinforcing plate 23, a first gold finger 24, a second gold finger 25, a groove 26, a black line 261, a joint 27, a double-conductive aluminum foil 271, a blank surface 28, a printing surface 29, a conductor 3, and a bevel 4.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

as shown in fig. 1 to 6, the first embodiment provides an FFC flexible flat wire, which includes a conductor 3, the conductor 3 is composed of multiple rows of copper wires, insulation layers 1 are attached to the upper and lower surfaces of the conductor 3,

terminals

21 and 22 are mounted at two ends of the conductor 3, a reinforcing plate 23 is mounted between the two

terminals

21 and 22 and the conductor 3, multiple rows of

gold fingers

24 and 25 are mounted on the reverse surfaces of the reinforcing plate 23 of the two

terminals

21 and 22, the multiple rows of

gold fingers

24 and 25 are connected with the multiple rows of copper wires of the conductor 3, grooves 26 are formed on the left and right sides of the reinforcing plate 23, a joint 27 between the reinforcing plate 23 and the conductor 3 is covered by the insulation layer 1, and the double-conductive aluminum foils 271 are on the same side of the reinforcing plate 2. The double-guide aluminum foil is preferably 0.08mm in thickness and 25mm in width.

The joint 27 covers the double-conductor aluminum foil, so that the anti-interference capability can be large, the external electromagnetic wave interference information is isolated, and the information transmission interference of a plurality of rows of copper wires on the conductor 3 is also isolated, because the joint 27 can generate a large amount of interference information. Of course, the material of the conductor 3 is copper wire, which has good conductivity and relatively low cost, and if silver wire is used, the conductivity is better. If a gold wire is adopted, the wire can be made thinner, the extension wire is better and is not easy to break. The lead is made of silver or gold, and has good corrosion resistance and small contact resistance. From the viewpoints of cost, mass production and the like, the conductor 3 is preferably a bare copper wire with the width of 0.3mm and the thickness of 0.05mm, the bare copper wire has relatively good conductivity and low resistance, and is easy to bend and bend, but is not easy to break after being bent for multiple times, so that the FFC flexible flat wire fails.

The reinforcing plate 23 can make the joint of the two

terminals

21 and 22 have certain strength, so that the joint is not as soft as a conductor, and is convenient for being fixedly connected with other electronic equipment. The groove 26 arranged on the reinforcing plate 23 can be perfectly clamped with other electronic equipment, and the novel electronic equipment has the advantages of being firm in installation, fast to detach and the like.

Preferably, the insulating layer 1 is divided into a first insulating layer 11 and a second insulating layer 12, the first insulating layer 11 is on the same side as the rows of

gold fingers

24 and 25, the first insulating layer 11 faces outward to form a printing surface 29, the second insulating layer 12 is on the same side as the reinforcing plate 23, the second insulating layer 12 faces outward to form a blank surface 28, and the second insulating layer 12 is attached with a black mylar aluminum foil on the blank surface 28 on the same side as the reinforcing plate 23. The mylar aluminum foil can well isolate and shield interference.

The aluminum foil mylar is formed by taking a metal aluminum foil as a base material, gluing the aluminum foil mylar with a polyester tape which is generally PET, PP and the like, wherein the preferred thickness of the aluminum foil mylar is 0.26mm, and the preferred width of the aluminum foil mylar is 20 mm.

In order to prevent the user from mistakenly distinguishing the first terminal 21 from the second terminal 22 during use to cause incorrect insertion, it is preferable that the width B1 of the first terminal 21 is different from the width C1 of the second terminal 22, the pitch C1 of the first gold finger 24 on the first terminal 21 is different from the pitch C2 of the second gold finger 25 on the second terminal 22, and the width a of the insulating layer 1 is preferably 35 mm. Thereby the utility model has the blind plugging function.

Preferably, the first gold finger 24 on the first terminal 21 is oriented in the same direction as the second gold finger 25 on the second terminal 22. Of course, the first gold finger 24 on the first terminal 21 and the second gold finger 25 on the second terminal 22 may face oppositely.

In order to prevent the gold finger from being oxidized and reduce the contact resistance between the conductor 3 and the gold finger, the surfaces of the conductor 3, the first gold finger 24 and the second gold finger 25 are preferably plated. The plating layer has lower cost and simple process, and can be produced on a large scale.

The conductor 3 is important to reduce its resistance and prevent oxidation, but the conductor 3 is bent only without insertion and removal; and the gold finger is in direct contact with the atmosphere and needs to be inserted and pulled, so the plating layer of the conductor 3 is preferably nickel plating, the thickness of the plating layer of the conductor 3 is more than or equal to 40 μm, the plating layers of the first gold finger 24 and the second gold finger 25 are both gold plating, and the thickness of the plating layers of the first gold finger 24 and the second gold finger 25 is more than or equal to 3 μm. The nickel has strong anti-corrosion, anti-rust and anti-oxidation capabilities, and meanwhile, the conductivity is good, and the cost is extremely low. Gold is the most stable in chemical properties among all metals, and is the strongest in corrosion prevention, rust prevention and oxidation prevention, and the best in ductility.

In order to prevent the insulating layer 1 from being too thick, which makes the product difficult to bend, it is preferable that the insulating layer 1 is an insulating film with a thickness of 60 μm, the parameters of the insulating layer 1 are 60V, 105 ° and 0.6A, the reinforcing plate 23 is made of PET, and the reinforcing plate 23 is provided with a black line 261 in the groove 26. The black line 261 facilitates rapid identification of whether a button is in place.

This embodiment two provides a flexible flat line of FFC, including conductor 3, conductor 3 comprises the copper wire of multirow, conductor 3 is gone up and down two sides and is all laminated insulating layer 1,

terminal

21, 22 are all installed at 3 both ends of conductor, install stiffening plate 23 between two

terminals

21, 22 and the conductor 3, multirow

golden finger

24, 25 is all installed at the reverse side of stiffening plate 23 to two

terminals

21, 22, multirow

golden finger

24, 25 and conductor 3's multirow copper wire interconnect, both sides are equipped with recess 26 about stiffening plate 23, insulating layer 1 covers two aluminium foils of leading at stiffening plate 23 and conductor 3's junction 27, two aluminium foils 271 of leading are in same one side at stiffening plate 2. The double-guide aluminum foil is preferably 0.08mm in thickness and 25mm in width.

The insulating layer 1 is divided into a first insulating layer 11 and a second insulating layer 12, the first insulating layer 11 is arranged at the same side of the rows of

gold fingers

24 and 25, the printing surface 29 is arranged on the outward facing surface of the first insulating layer 11, the second insulating layer 12 is arranged at the same side of the reinforcing plate 23, the outward facing surface of the second insulating layer 12 is a blank surface 28, and the black mylar aluminum foil is adhered to the blank surface 28 of the second insulating layer 12 at the same side of the reinforcing plate 23. The mylar aluminum foil can well isolate and shield interference.

The insulating layer 1 and the reinforcing plate 23 are folded to form a folded angle 4 so that the two

terminals

21, 22 are at 90 degrees to each other. The bending angle of 90 degrees can be better on some electronic equipment which is tense in space and cannot be connected in a straight line.

In order to improve the service life and prevent serious interference at the folded corner 4 and too close friction between the conductors 3, preferably, foam cotton glue is pasted between the contact surfaces of the hollow surface 28 and the printing surface 29 in the folded corner 4, and acetate cloth is wrapped outside the folded corner 4. The foam cotton glue is soft and has good viscosity, the conductors 3 of the folded corners 4 can be vertically separated, the acetic acid cloth can also be well prevented from bouncing off at the folded corners 4, and a certain shielding effect is achieved.

Preferably, the width of the first terminal 21 is different from the width of the second terminal 22, and the pitch of the first gold fingers 24 on the first terminal 21 is different from the pitch of the second gold fingers 25 on the second terminal 22.

Preferably, the first gold finger 24 on the first terminal 21 is oriented in the same direction as the second gold finger 25 on the second terminal 22.

Preferably, the conductor 3, the first gold finger 24 and the second gold finger 25 are plated on the surfaces.

Preferably, the plating layer of the conductor 3 is nickel plating, the thickness of the plating layer of the conductor 3 is greater than or equal to 40 μm, the plating layers of the first gold finger 24 and the second gold finger 25 are both gold plating, and the thickness of the plating layers of the first gold finger 24 and the second gold finger 25 is greater than or equal to 3 μm.

Preferably, the insulating layer 1 is an insulating film with a thickness of 60 μm, the parameters of the insulating layer 1 are 60V, 105 ° and 0.6A, the reinforcing plate 23 is made of PET, and the reinforcing plate 23 is provided with a black line 261 in the groove 26.

The present embodiment should not be considered as a limitation of the present invention, but any modification made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. An FFC flexible flat wire comprising a conductor (3), characterized in that: conductor (3) comprise the copper conductor of multirow, insulating layer (1) has all been laminated on the two sides about conductor (3), the terminal is all installed at conductor (3) both ends, install stiffening plate (23) between two terminals and conductor (3), multirow golden finger is all installed at the reverse side of stiffening plate (23) to two terminals, multirow golden finger and the multirow copper conductor interconnect of conductor (3), both sides are equipped with recess (26) about stiffening plate (23), insulating layer (1) covers two aluminium foils 271 that lead in junction (27) of stiffening plate (23) and conductor (3), two aluminium foils (271) that lead are in same one side in stiffening plate (23).

2. The FFC flexible flat wire of claim 1 wherein: insulating layer (1) divide into first insulating layer (11) and second insulating layer (12), first insulating layer (11) and multirow golden finger homonymy and first insulating layer (11) are towards the outside for printing face (29), second insulating layer (12) and stiffening plate (23) homonymy and second insulating layer (12) are towards the outside for blank face (28), second insulating layer (12) are pasted with black wheat and are drawn the aluminium foil on blank face (28) with stiffening plate (23) homonymy.

3. The FFC flexible flat wire of claim 2 wherein: the insulating layer (1) and the reinforcing plate (23) are folded with each other to form a folded angle (4) so that the two terminals form 90 degrees with each other.

4. The FFC flexible flat wire of claim 3 wherein: and foam cotton glue is pasted between the contact surfaces of the hollow white surface (28) and the lettering surface (29) of the folded angle (4), and acetate cloth is wrapped outside the folded angle (4).

5. The FFC flexible flat wire of claim 1 wherein: the two terminals are divided into a first terminal (21) and a second terminal (22), the golden finger is divided into a first golden finger (24) and a second golden finger (25), the width of the first terminal (21) is inconsistent with the width of the second terminal (22), and the distance between the first golden finger (24) on the first terminal (21) is inconsistent with the distance between the second golden finger (25) on the second terminal (22).

6. The FFC flexible flat wire of claim 5 wherein: the orientation of the first golden finger (24) on the first terminal (21) is the same as that of the second golden finger (25) on the second terminal (22).

7. The FFC flexible flat wire of claim 5 wherein: and the surfaces of the conductor (3), the first golden finger (24) and the second golden finger (25) are respectively provided with a plating layer.

8. The FFC flexible flat wire of claim 7 wherein: the plating layer of the conductor (3) is nickel plating, the thickness of the plating layer of the conductor (3) is more than or equal to 40 mu m, the plating layers of the first golden finger (24) and the second golden finger (25) are both gold plating, and the thickness of the plating layers of the first golden finger (24) and the second golden finger (25) is more than or equal to 3 mu m.

9. The FFC flexible flat wire of claim 1 wherein: insulating layer (1) adopts the insulating film of 60um thickness, the parameter of insulating layer (1) is 60V, 105 °, 0.6A, stiffening plate (23) are the PET material, stiffening plate (23) are equipped with black line (261) in recess (26).