Flexible flat cable

Abstract

The utility model discloses a flexible flat cable, which comprises a conductor, a reinforcing plate and a first protective film, the conductor sequentially comprises a cuttable part, a welding part and an attaching part along the length direction, the reinforcing plate is attached to the upper end surface of the cuttable part, the first protective film is attached to the upper end surface of the attaching part, and the welding part is attached to the upper end surface of the first protective film. A welding part is formed on the exposed part, which is not attached with the reinforcing plate and the first protective film, of the conductor; and the welding part is used for processing and welding. According to the flexible flat cable, the cuttable part and the welding part can be directly inserted into the FFC female seat for testing, the cuttable part is cut after the testing is completed, and the welding part is welded after the cutting is completed, so that the testing steps are simplified, the flexible flat cable can be conveniently and directly tested, the PIN can be prevented from tilting or inclining in the processing process, and the testing efficiency is improved. And the machining and welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a flexible flat cable. Background Art

[0002] A flexible flat cable (FFC) is a new type of data cable made of PET insulating material and extremely thin tinned flat copper wire, which is laminated by a high-tech automated equipment production line. It has the advantages of being soft, arbitrarily bendable and foldable, thin in thickness, small in volume, simple in connection, convenient in disassembly, and easy to solve electromagnetic shielding (EMI), etc. It greatly reduces the volume of electronic products, reduces production costs, and improves production efficiency. It is most suitable for use as a data transmission cable between moving parts and the main board, between PCB boards, and in miniaturized electrical equipment.

[0003] The existing flexible flat cable has connecting conductors (gold fingers) that expose the insulating material. The gold fingers are usually used for soldering with external electronic components. Before soldering, the FFC has very soft gold fingers, which are prone to deformation due to force release or collision when not fixed. A relatively thick protective film needs to be pasted on the gold fingers. Before soldering, the protective film needs to be torn off before soldering. In such a processing process, not only are the steps cumbersome, but also the gold finger PINs are prone to warping and skewing, which is not conducive to the subsequent processing and soldering of the FFC. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to overcome the problems existing in the prior art, and provide a flexible flat cable that can be directly plugged into a test socket for testing. After the plug-in test is completed, the cuttable part and the reinforcing plate are directly cut, and then the welding part is welded with external electronic components to complete the processing and welding, which has the advantages that the PINs are not prone to warping or skewing, simplifies the test steps, and is also convenient for subsequent processing and welding.

[0005] To achieve the above technical purpose and reach the above technical effect, the present utility model is realized through the following technical solutions:

[0006] A flexible flat cable includes a conductor, a reinforcing plate, and a first protective film. The conductor sequentially includes a cuttable part, a welding part, and a fitting part along its length direction. The reinforcing plate is attached to the upper end surface of the cuttable part, and the first protective film is attached to the upper end surface of the fitting part. The exposed part of the conductor without the attached reinforcing plate and the first protective film forms the welding part, and the welding part is used for processing and welding.

[0007] Furthermore, the flexible flat cable further includes a second protective film, and the second protective film is attached to the lower end surface of the fitting part.

[0008] Further, the cuttable part is arranged at the end of the conductor, and one end of the reinforcing plate is aligned with one end of the cuttable part.

[0009] Further, the first protective film further includes an identification area, and the identification area is arranged on the surface of the first protective film.

[0010] Further, the length of the cuttable part is 2.5 - 3.5 cm, the length of the welding part is 1.5 - 4.5 cm, and the length of the fitting part is 13.5 - 16.5 cm.

[0011] Further, an adhesive layer is arranged between the reinforcing plate and the end of the conductor.

[0012] Further, both the first protective film and the second protective film are PET protective films.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By attaching the reinforcing plate to the cuttable part, the present utility model enhances the strength of the end of the flexible flat cable and leaves a welding part at the exposed part. After the cable is tested, the cuttable part and the reinforcing plate are directly cut, and the welding part will not warp or skew, simplifying the test steps, eliminating the need to tear the film, ensuring the adhesion between the first protective film and the conductor, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a side view of the flexible flat cable in the present utility model;

[0016] Figure 2 is a top view of the flexible flat cable in the present utility model;

[0017] Figure 3 is a bottom view of the flexible flat cable in the present utility model.

[0018] Reference numerals are: 1 - conductor, 11 - cuttable part, 12 - welding part, 13 - fitting part, 2 - reinforcing plate, 3 - first protective film, 31 - identification area, and 4 - second protective film. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments does not limit the present utility model.

[0020] Embodiment

[0021] As Figures 1-3As shown in the figure, this embodiment discloses a flexible flat cable, which includes a conductor 1, a reinforcing plate 2, and a first protective film 3. The conductor 1 sequentially includes a cuttable part 11, a welding part 12, and a fitting part 13 along its length direction. The reinforcing plate 2 is attached to the upper end surface of the cuttable part 11, and the first protective film 3 is attached to the upper end surface of the fitting part 13. The exposed part of the conductor 1 without the attached reinforcing plate 2 and the first protective film 3 forms the welding part 12, and the welding part 12 is used for processing welding. By setting the reinforcing plate 2 to improve the strength of the conductor 1, it can prevent PIN from warping or skewing during the test process; and by leaving the exposed welding part 12 between the reinforcing plate 2 and the first protective film 3, it is convenient for the flexible flat cable to be directly processed and welded after the test; by setting the first protective film 3, it plays a role in protecting the flexible flat cable and further prevents the flexible flat cable from bending or deforming.

[0022] The actual application process of the flexible flat cable in this embodiment is as follows: (1) Testing: directly insert the cuttable part 11 and the welding part 12 into the test female socket; (2) Processing and welding: after the test is completed, cut the cuttable part 11 and the reinforcing plate 2, and directly weld the exposed welding part 12 to the external electronic components.

[0023] During the test process, due to the setting of the reinforcing plate 2, the cuttable part 11 and the welding part 12 will not deform due to force release or collision, that is, PIN will not warp or skew, which simplifies the test steps, improves the test efficiency, and ensures the subsequent processing and welding. During the processing and welding process, due to the setting of the exposed welding part 12, there is no need to perform the step of tearing the film, and the processing and welding process can be directly carried out, which can not only ensure that the welding part 12 does not warp or skew during the processing and welding process, but also save the production cost.

[0024] In this embodiment, the flexible flat cable further includes a second protective film 4, and the second protective film 4 is attached to the lower end surface of the fitting part 13. The first protective film 3 and the second protective film 4 are correspondingly arranged and jointly attached to the fitting part 13, playing a comprehensive protection role for the flexible flat cable and preventing the flexible flat cable from being damaged.

[0025] In this embodiment, the cuttable part 11 is arranged at the end of the conductor 1, and one end of the reinforcing plate 2 is aligned with one end of the cuttable part 11. By setting the reinforcing plate 2 at the end of the conductor 1, the strength of the end of the flexible flat cable is enhanced, so as to realize that the flexible flat cable can be directly inserted and tested.

[0026] In this embodiment, the first protective film 3 further includes an identification area 31, and the identification area 31 is arranged on the upper surface of the first protective film 3. By setting the identification area 31, it is convenient for the operator to distinguish the two sides of the flexible flat cable.

[0027] In this embodiment, the length of the cuttable part is 2.5 - 3.5 cm, the length of the welding part is 1.5 - 4.5 cm, and the length of the fitting part is 13.5 - 16.5 cm. Preferably, the length of the cuttable part 11 is 3 cm, the length of the welding part 12 is 3 cm, and the length of the fitting part 13 is 15 cm. By defining the lengths of the cuttable part 11 and the welding part 12, the situation of leaving an overly long cuttable part 11 is avoided, saving the production cost.

[0028] In this embodiment, an adhesive layer is provided between the end of the reinforcing plate 2 and the conductor 1.

[0029] In this embodiment, both the first protective film 3 and the second protective film 4 are PET protective films.

[0030] The technical solutions provided by the embodiments of the present utility model have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present utility model. The descriptions of the above embodiments are only applicable to helping understand the principles of the embodiments of the present utility model; at the same time, for those of ordinary skill in the art, based on the embodiments of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A flexible flat cable, characterized in that: The invention comprises a conductor, a reinforcing plate and a first protective film. The conductor comprises a cuttable portion, a welding portion and a bonding portion in sequence along its length direction. The reinforcing plate is bonded to the upper end surface of the cuttable portion. The first protective film is bonded to the upper end surface of the bonding portion. The exposed portion of the conductor not bonded with the reinforcing plate and the first protective film forms a welding portion. The welding portion is used for processing and welding.

2. A flexible flat cable according to claim 1, characterized in that: The flexible flat cable further includes a second protective film, and the second protective film is attached to the lower end surface of the attachment portion.

3. A flexible flat cable according to claim 1, characterized in that: The cuttable portion is arranged at the end of the conductor, and one end of the reinforcing plate is aligned with one end of the cuttable portion.

4. The flexible flat cable according to claim 1, characterized in that: The first protective film further includes a marking area, and the marking area is arranged on the surface of the first protective film.

5. The flexible flat cable according to claim 1, characterized in that: The length of the cuttable portion is 2.5-3.5 cm, the length of the welding portion is 1.5-4.5 cm, and the length of the fitting portion is 13.5-16.5 cm.

6. The flexible flat cable according to claim 1, characterized in that: An adhesive layer is provided between the reinforcing plate and the end of the conductor.

7. The flexible flat cable according to claim 2, characterized in that: The first protective film and the second protective film are both PET protective films.

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