CN211181679U

CN211181679U - FFC (flexible flat cable) and wire harness

Info

Publication number: CN211181679U
Application number: CN201922189862.4U
Authority: CN
Inventors: 洪新江; 卢兵; 陈春
Original assignee: Zhejiang Xinfuer Electronics Co ltd
Current assignee: Zhejiang Xinfuer Electronics Co ltd
Priority date: 2019-12-08
Filing date: 2019-12-08
Publication date: 2020-08-04
Anticipated expiration: 2029-12-08

Abstract

The utility model discloses a FFC flat cable, which comprises a flat cable body, wherein the flat cable body comprises a first insulating layer, a conducting wire layer, a second insulating layer, a third insulating layer and a reinforcing plate; the first insulating layer is compounded on the upper surface of the wire layer, and the upper parts of two ends of the wire layer are exposed to form a conductive part; the second insulating layer is compounded on the lower surface of the wire layer, the lower parts of the two ends of the wire layer are provided with reserved areas without the first insulating layer, the reserved areas are compounded with a third insulating layer, the outer end edge of the third insulating layer is flush with the edge of the wire layer, and the inner end edge of the third insulating layer is lapped on the second insulating layer; the reinforcing plate is attached to the lower surface of the third insulating layer and covers the inner end edge of the third insulating layer, and only the third insulating layer in the first insulating layer, the second insulating layer and the third insulating layer is a high-temperature-resistant insulating layer. The utility model discloses it is rational in infrastructure, can guarantee product quality in reduce cost, fine market competition has.

Description

FFC (flexible flat cable) and wire harness

Technical Field

The utility model relates to a FFC winding displacement and pencil belongs to electrically conductive wire rod structural design field.

Background

Fig. 1 shows a first conventional FFC flat cable, which includes a flat cable body, the flat cable body includes a first insulating layer 1, a conducting wire layer 2 and a second insulating layer 3; the first insulating layer 1 is compounded on the upper surface of the wire layer 2, the upper parts of two ends of the wire layer 2 are exposed to form a conductive part 21, the second insulating layer 3 is compounded on the lower surface of the wire layer 2, two ends of the second insulating layer 3 are flush with two ends of the wire layer 2, and the first insulating layer 1 and the second insulating layer 3 are common insulating layers with poor high-temperature resistance; in practical use of the FFC flat cable, due to the poor high temperature resistance of the second insulating layer 3, after the FFC flat cable is affected by high temperature, glue overflow occurs in the second insulating layer 3, and then the exposed wires are covered, so that the problem of poor contact is easily caused.

Fig. 2 shows a second conventional FFC flat cable, which includes a flat cable body, wherein the flat cable body includes a first insulating layer 1, a conductive wire layer 2 and a second insulating layer 3; the first insulating layer 1 is compounded on the upper surface of the wire layer 2, the upper parts of two ends of the wire layer 2 are exposed to form a conductive part 21, the second insulating layer 3 is compounded on the lower surface of the wire layer 2, two ends of the second insulating layer 3 are flush with two ends of the wire layer 2, wherein the first insulating layer 1 is a common insulating layer with poor high temperature resistance, and the second insulating layer 3 is a high temperature resistant insulating layer; in practical use, because the second insulating layer 3 has good high temperature resistance, after the FFC flat cable is affected by high temperature, the second insulating layer 3 does not overflow glue due to the high temperature resistance and covers the exposed lead, so that the problem of the first conventional FFC flat cable is solved, but the FFC flat cable needs to use more high temperature resistant insulating materials (the market price of the high temperature resistant insulating materials is much higher than that of common insulating materials which do not resist high temperature), has the problem of higher cost, and further affects the market competitiveness.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims at providing a but the assurance quality's FFC winding displacement and have the pencil of this FFC winding displacement when reduce cost.

Realize the utility model discloses the technical scheme of purpose is:

an FFC flat cable comprises a flat cable body, wherein the flat cable body comprises a first insulating layer, a conducting wire layer, a second insulating layer, a third insulating layer and a reinforcing plate; the first insulating layer is compounded on the upper surface of the wire layer, and the upper parts of two ends of the wire layer are exposed to form a conductive part; the second insulating layer is compounded on the lower surface of the wire layer, the lower parts of the two ends of the wire layer are provided with reserved areas without the first insulating layer, the reserved areas are compounded with a third insulating layer, the outer end edge of the third insulating layer is flush with the edge of the wire layer, and the inner end edge of the third insulating layer is lapped on the second insulating layer; the reinforcing plate is attached to the lower surface of the third insulating layer, the inner end edge of the third insulating layer is covered, and only the third insulating layer in the first insulating layer, the second insulating layer and the third insulating layer is a high-temperature-resistant insulating layer.

In the technical scheme, the middle part of the flat cable body is provided with the parting lines at intervals along the width direction of the flat cable body so as to form a plurality of strip-shaped belt bodies in the middle part of the flat cable body, and the middle parts of the strip-shaped belt bodies are overlapped and then bound through the adhesive tape.

A wire harness having the FFC cable described above, with connectors connected to both ends of the FFC cable.

The utility model discloses has positive effect: the utility model discloses in, through only setting up high temperature resistant third insulating layer in wire layer both ends lower part, and adopt the ordinary insulating material of high temperature resistant performance relative difference (the cost of third insulating layer is higher than the cost of first insulating layer and second insulating layer) at all the other positions (be first insulating layer and second insulating layer) to can reduce manufacturing cost when guaranteeing FFC winding displacement quality, the strong market competition who improves the product.

Drawings

FIG. 1 is a cross-sectional view of a first FFC cable of the prior art;

FIG. 2 is a cross-sectional view of a second FFC cable of the prior art;

FIG. 3 is a sectional view of an FFC flat cable in example 1;

FIG. 4 is a top view of the FFC flex cable shown in example 2;

fig. 5 is a schematic structural view of an FFC bus bar shown in embodiment 2;

fig. 6 is a schematic structural view of the wire harness in this embodiment 3.

The reference symbols shown in the figures are: 1-a first insulating layer; 2-a conductor layer; 21-a conductive portion; 3-a second insulating layer; 4-a third insulating layer; 5-a reinforcing plate; 6-line splitting; 7-strip-shaped belt body; 70-adhesive tape; 8-connector.

Detailed Description

The specific structure of the present invention is described below with reference to the attached drawings:

example 1

An FFC flat cable, as shown in fig. 3, includes a flat cable body, which includes a first insulating layer 1, a conducting wire layer 2, a second insulating layer 3, a third insulating layer 4 and a reinforcing plate 5; the first insulating layer 1 is compounded on the upper surface of the wire layer 2, and the upper parts of two ends of the wire layer 2 are exposed to form a conductive part 21; the second insulating layer 3 is compounded on the lower surface of the wire layer 2, the lower parts of the two ends of the wire layer 2 are provided with reserved areas without the first insulating layer 1, the reserved areas are compounded with a third insulating layer 4, the outer end edge of the third insulating layer 4 is flush with the edge of the wire layer 2, and the inner end edge is lapped on the second insulating layer 3; the reinforcing plate 5 is attached to the lower surface of the third insulating layer 4, and covers the inner end edge of the third insulating layer 4, only the third insulating layer 4 in the first insulating layer 1, the second insulating layer 3 and the third insulating layer 4 is a high-temperature-resistant insulating layer, the first insulating layer 1 and the second insulating layer 3 are common insulating layers, that is, the high-temperature-resistant value of the first insulating layer 1 and the high-temperature-resistant value of the second high-temperature-resistant layer are both lower than the high-temperature-resistant value of the third insulating layer. The utility model discloses in, through only setting up high temperature resistant third insulating layer 4 in 2 both ends lower parts on wire layer, and adopt the ordinary insulating material of high temperature resistance relative difference (the cost of third insulating layer is with high costs than first insulating layer and second insulating layer) at all the other positions (be first insulating layer 1 and second insulating layer 3) to can reduce manufacturing cost when guaranteeing FFC winding displacement quality, the strong market competition who improves the product.

In this embodiment, first insulating layer 1, second insulating layer 3 and third insulating layer 4 constitute by PET layer and hot melt adhesive layer, and the essence difference of first insulating layer 1, second insulating layer 3 and third insulating layer 4 lies in the hot melt adhesive material, the high temperature resistant of the hot melt adhesive layer in the third insulating layer 4 is better than the high temperature resistant of the hot melt adhesive layer in first insulating layer 1 and the second insulating layer (the hot melt adhesive that adopts in the third insulating layer 4 is high temperature resistant value more than 80 ℃), and consequently the third insulating layer material cost of equidimension will be higher than the material cost of first insulating layer and second insulating layer, consequently adopts the utility model provides a possible reduction in production cost when guaranteeing FFC winding displacement quality afterwards, the above-mentioned hot melt adhesive adopt current hot melt adhesive can.

Example 2

As a further improvement of the embodiment, referring to fig. 4 and 5, in this embodiment, the middle of the flat cable body is provided with the dividing lines 6 at intervals along the width direction thereof to form a plurality of strip-shaped belt bodies 7 in the middle of the flat cable body, and the middle of the plurality of strip-shaped belt bodies 7 are overlapped and then bound by the adhesive tape 70.

Example 3

A wire harness having the FFC bus bar described in embodiment 1 or embodiment 2, wherein connectors 8 are connected to both ends of the FFC bus bar, and when the wire harness is used, the connectors 8 and the mating connectors 8 may be electrically connected, as shown in fig. 6.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. An FFC flat cable comprises a flat cable body, and is characterized in that the flat cable body comprises a first insulating layer (1), a lead layer (2), a second insulating layer (3), a third insulating layer (4) and a reinforcing plate (5); the first insulating layer (1) is compounded on the upper surface of the wire layer (2), and the upper parts of two ends of the wire layer (2) are exposed to form a conductive part (21); the second insulating layer (3) is compounded on the lower surface of the wire layer (2), the lower parts of two ends of the wire layer (2) are provided with reserved areas without the first insulating layer (1), the reserved areas are compounded with a third insulating layer (4), the outer end edge of the third insulating layer (4) is flush with the edge of the wire layer (2), and the inner end edge of the third insulating layer (4) is lapped on the second insulating layer (3); the reinforcing plate (5) is attached to the lower surface of the third insulating layer (4) and covers the inner end edge of the third insulating layer (4), and only the third insulating layer (4) in the first insulating layer (1), the second insulating layer (3) and the third insulating layer (4) is a high-temperature-resistant insulating layer.

2. The FFC flat cable according to claim 1, wherein the middle part of the flat cable body is provided with parting lines (6) at intervals along the width direction thereof so as to form a plurality of strip-shaped belt bodies (7) in the middle part of the flat cable body, and the plurality of strip-shaped belt bodies (7) are overlapped at the middle part and then bound by an adhesive tape (70).

3. A wire harness having the FFC bus line described in claim 1 or 2, with connectors (8) connected to both ends of the FFC bus line.