CN202633671U - Flexible cable assembly - Google Patents

Abstract

The utility model discloses a flexible flat cable assembly (100), which comprises a flexible flat cable (1) and electronic components connected with the flexible flat cable. The flexible flat cable assembly also includes a flexible flat cable A magnetic ring (2) of the cable, said magnetic ring (2) positioning said flexible flat cable (1) to said electronic component.

Description

Flexible Cable Assemblies

【Technical field】

The utility model relates to a flexible flat cable assembly, in particular to a flexible flat cable assembly with anti-electromagnetic interference.

【Background technique】

FFC (Flexible Flat Cable) is a flexible flat cable, which is a new type of data cable made of PET insulation material and extremely thin tinned flat copper wire, which is pressed by high-tech automatic equipment production line. It has the advantages of bending and folding, thin thickness, small size, simple connection, convenient disassembly, and easy solution to electromagnetic shielding (EMI). The number and spacing of wires can be selected arbitrarily, which makes the connection more convenient, greatly reduces the volume of electronic products, reduces production costs, and improves production efficiency. It is most suitable for between moving parts and main boards, between PCB boards and miniaturized electrical appliances It is used as a data transmission cable in the equipment. Common specifications include 0.5mm, 0.8mm, 1.0mm, 1.25mm, 1.27mm, 1.5mm, 2.0mm, 2.54mm and other flexible cables with various pitches. It is suitable for electronic products such as printers, scanners, copiers, video cameras, car audio, digital cameras, MP3, DVD, VCD, monitors, etc. It is almost ubiquitous in modern electrical equipment. As shown in China Taiwan Patent Announcement No. M334509, it discloses a flexible cable positioning structure, which includes a flexible cable and a positioning piece, the flexible cable is connected to the electronic component, and the flexible cable is connected by the positioning piece Fixed on the electronic components to achieve the purpose of stably positioning the flexible cable on the electronic components, and when it is applied to various electronic products, it can improve the connection between the cable and the electronic components in the past, which is easy to cause The determination of detachment due to external force, and the problem that the solder joints are not easy to align. However, the above-mentioned design of the flexible cable has a poor anti-electromagnetic interference effect. Sometimes, in order to achieve better anti-electromagnetic interference effect, a magnetic ring is arranged outside the docking area of the above-mentioned flexible cable structure. However, such structural parts are many, the assembly is complicated, and the additional space is relatively large, which is not conducive to the current trend of miniaturization and simplification of the connector.

Therefore, in view of the above defects, it is necessary to improve the above technical structure to make up for the deficiencies of the prior art.

【Content of utility model】

The purpose of the utility model is to provide a flexible flat cable assembly with a simple structure, which not only has a good anti-electromagnetic interference effect, but also facilitates mutual positioning of the flexible flat cable and the electronic components.

In order to achieve the above object, the utility model adopts the following technical solution: a flexible flat cable assembly, which includes a flexible flat cable, electronic components connected with the flexible flat cable, and the flexible flat cable assembly also includes a surrounding flexible A magnetic ring of the flat cable that positions the flexible flat cable to the electronic component.

Compared with the prior art, the flexible flat cable assembly of the utility model has good anti-electromagnetic interference effect, and at the same time, the magnetic ring can position the flexible flat cable on the electronic component, so that the flexible flat cable can be welded on the electronic component before welding Get well positioned.

【Description of drawings】

Fig. 1 is a three-dimensional assembly view of the flexible flat cable assembly of the present invention.

FIG. 2 is an exploded perspective view of the flexible flat cable assembly shown in FIG. 1 .

FIG. 3 is another perspective view of the flexible flat cable assembly shown in FIG. 2 .

FIG. 4 is a partially assembled view of the flexible flat cable assembly shown in FIG. 1 .

FIG. 5 is a schematic cross-sectional view of the flexible flat cable assembly shown in FIG. 1 .

【Detailed ways】

1 to 5, the flexible flat cable assembly 100 of the present invention includes a flexible flat cable 1, electronic components connected to the flexible flat cable 1 and surrounding the flexible flat cable 1 and connecting the flexible flat cable 1 Magnetic ring 2 positioned on the electronic component. The flexible flat cable 1 includes a plurality of conductors 3 arranged in parallel and an insulating film 12 covering the conductors 3. The insulating film 12 can be covered on the conductor 3 by pressing the upper and lower surfaces, or can be covered by extrusion molding. The conductor 3 and the insulating film at the end of the insulating film 12 are missing, so that the conductor 3 at the end of the flexible flat cable 1 is exposed outside the insulating film 12 .

In one embodiment, the electronic component is a circuit board 4 .

The magnetic ring 2 includes a top wall 21 , a bottom wall 22 and a pair of side walls 23 connecting the top wall 21 and the bottom wall 22 . The magnetic ring 2 is provided with a receiving chamber 20 passing through the front and back of the magnetic ring 2 to fix the magnetic ring 2 in the circuit board 4 . The receiving chamber 20 is surrounded by a top wall 21 , a bottom wall 22 and a pair of side walls 23 . A protrusion 205 is provided on the inner wall of the receiving chamber 20 to engage and fix the circuit board 4 . The accommodating chamber 20 is narrow at the top and wide at the bottom, and is composed of upper and lower chambers 201 and 202 that pass through from top to bottom. The upper cavity 201 is used to accommodate the flexible flat cable 1 , and the width of the upper cavity 201 is equal to the width of the flexible flat cable 1 . The lower cavity 202 is wider than the upper cavity 201 in the width direction, wherein the protrusion 205 is arranged on the inner wall surface of the lower cavity 202 .

The circuit board 4 is provided with a pair of sidewalls 23 for accommodating the magnetic ring 2 to fix the magnetic ring 2 . The locking slot 40 is provided with a positioning groove 401 matching with the protrusion 205 on the magnetic ring 2 . The width of the circuit board between the slots 40 is equal to the width of the lower cavity 202 . There are also several conductive sheets on the upper surface of the circuit board 4 .

When assembling, the conductor 3 at the end of the flexible flat cable 1 is put into the magnetic ring 2, partially accommodated in the upper cavity 201 of the magnetic ring 2, and then the conductor 3 at the end of the flexible flat cable 1 is placed on the circuit board 4 On the several conductive sheets of the flexible flat cable 1, the several conductors 3 at the end of the flexible flat cable 1 are aligned with the several conductive sheets on the circuit board 4, and at the same time, the magnetic ring 2 with the flexible flat cable 1 installed along the flexible flat cable 1 Assembled into the circuit board 4, the two side walls 23 of the magnetic ring 2 are inserted into the two slots 40 on the circuit board 4, and the protrusions 205 in the magnetic ring 2 engage with the positioning grooves 401 on the circuit board 4 So that the magnetic ring 2 is fixed on the circuit board 4, the top wall 21, the bottom wall 22 and a pair of side walls 23 of the magnetic ring 2 connect a part of the flexible flat cable 1 and the space between the two slots 40 of the circuit board 4 The circuit board is fixed inside, so that a part of the flexible flat cable 1 and the circuit board between the two slots 40 are accommodated in the receiving cavity 20 . At the same time, the flexible flat cable 1 is also preliminarily positioned on the upper surface of the circuit board 4 . Finally, several conductors 3 are respectively soldered to several conductive sheets of the circuit board 4 .

In another embodiment, the electronic component can also be a connector, and one end of the flexible flat cable 1 is also fixed in the connector through the magnetic ring 2 and electrically connected with the conductive terminals in the connector. The connector is provided with a card slot corresponding to a pair of side walls 23 of the magnetic ring 2 to fix the magnetic ring 2 . Due to the existence of the magnetic ring 2, the flexible flat cable 1 has a good anti-electromagnetic interference effect.

The specific shape of the magnetic ring 2 in the present invention can be specifically set according to needs, and the accommodating chamber 20 inside it can be as narrow at the top and wide at the bottom as in this embodiment, or can be set as wide at the top and narrow at the bottom or other shapes as required.

Claims (10)

1. flexible flat cable assembly; It comprises flexible flat cable; The electronic component that is connected with flexible flat cable; It is characterized in that: said flexible flat cable assembly also comprises the magnet ring around flexible flat cable, and said magnet ring is positioned said flexible flat cable for said electronic component.

2. flexible flat cable assembly as claimed in claim 1 is characterized in that: said electronic component is a circuit board.

3. flexible flat cable assembly as claimed in claim 2; It is characterized in that: said magnet ring comprises roof; The pair of sidewalls of diapire and connection roof and diapire; Said magnet ring is provided with the host cavity that runs through said magnet ring front and back, and said host cavity is enclosed by said roof, said diapire and said pair of sidewalls and forms.

4. flexible flat cable assembly as claimed in claim 3; It is characterized in that: said circuit board is provided with the pair of sidewalls of accommodating said magnet ring so that fix the draw-in groove of said magnet ring, and the part of said flexible flat cable and the circuit board between the said draw-in groove are contained in the said host cavity.

5. flexible flat cable assembly as claimed in claim 4 is characterized in that: the internal face of said host cavity is provided with projection, is provided with the location notch with said projection matching and fixing in the said draw-in groove.

6. flexible flat cable assembly as claimed in claim 4 is characterized in that: said host cavity is up-narrow and down-wide, is made up of epicoele and cavity of resorption, and said cavity of resorption is wideer than epicoele.

7. flexible flat cable assembly as claimed in claim 6 is characterized in that: the width of said epicoele equals the width of said flexible flat cable, and the width of said cavity of resorption equals the width of the circuit board between the said draw-in groove.

8. flexible flat cable assembly as claimed in claim 2 is characterized in that: said flexible flat cable has conductor, and said circuit board is provided with conducting strip, and said solderable conductor is connected on the said conducting strip.

9. flexible flat cable assembly as claimed in claim 1 is characterized in that: said electronic component is a connector.

10. flexible flat cable assembly as claimed in claim 9; It is characterized in that: said magnet ring comprises roof; The pair of sidewalls of diapire and connection roof and diapire; Said magnet ring is provided with the host cavity that runs through before and after the said magnet ring, said host cavity by said roof, said diapire and said pair of sidewalls around forming, be provided with in the said connector with said magnet ring on said pair of sidewalls corresponding so that the fixing draw-in groove of magnet ring.

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