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Shield flat cable

A flat cable and shielding film technology, applied in the direction of flat/ribbon cables, power cables, insulated cables, etc., can solve the problems of different height positions, unstable connection between ground conductors and ground pads, etc., and achieve the effect of reliable connection

Active Publication Date: 2018-03-13
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the FFC in Patent Document 1 is connected to the connector, and the height positions in the thickness direction of the contact connection part and the ground conductor are different.
In this FFC, when connecting to a substrate having the above-mentioned contact pads and ground pads, the connection between the ground conductor and the ground pad becomes unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0038] figure 1 It is a perspective view showing the outline of the shielded flat cable according to the first embodiment of the present invention. figure 2 From figure 1 The rear view of the arrow A observed. image 3 From figure 1 Side view of arrow B observed. Figure 4 is a schematic cross-sectional view showing the masking film. Figure 5 It is a perspective view for explaining the connection between the shielded flat cable and the board according to the first embodiment of the present invention.

[0039] Such as figure 1 As shown, the shielded flat cable 10 according to this embodiment is composed of a plurality of flat conductors 11 , insulating films 12 and 13 , a shielding film 14 , and a ground conductor 15 . The shielded flat cable 10 is a flat cable in which, for example, a plurality of flat conductors 11 having a flat cross section and extending in the X-axis direction are arranged in parallel with the Y-axis direction, and the flat conductors 11 and the fl...

no. 2 Embodiment approach

[0054] Next, a second embodiment of the shielded flat cable of the present invention will be described with reference to the drawings. Figure 6 It is a perspective view showing the outline of the shielded flat cable according to the second embodiment of the present invention. Figure 7 From Figure 6 Posterior view of arrow C observed. Figure 8 From Figure 6 Side view of arrow D observed. and, Figure 9 From Figure 6 Cross-sectional view observed by arrow E. This embodiment differs from the first embodiment in the shape and arrangement of the ground conductor, and the other configurations are the same as those in the first embodiment, so only the different configurations will be described.

[0055] Such as Figure 7 and Figure 9 As shown, the ground conductor 25 of the shielded flat cable 20 according to the present embodiment is formed in a U-shape by a thin plate of conductive metal foil, and extends along the longitudinal direction of the flat conductor 11 outs...

no. 3 Embodiment approach

[0061] Next, a third embodiment of the shielded flat cable of the present invention will be described with reference to the drawings. Figure 11 It is a perspective view showing the outline of the shielded flat cable according to the third embodiment of the present invention. Figure 12 From Figure 11 Posterior view of arrow C observed. Figure 13 From Figure 11 Side view of arrow D observed. Compared with the second embodiment, this embodiment differs from the second embodiment in that the end of the flat conductor is different, and the same as the first embodiment, the ground conductor is located between the insulating film and the shielding film, and the other structures are the same as the second embodiment, so only the difference structure is described.

[0062] Such as Figure 11 to Figure 13 As shown, in this embodiment, all surfaces of the flat conductor 11 may be exposed at the end of the shielded flat cable 40 . All surfaces of the flat conductor 11 can be ex...

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Abstract

The invention provides a shield flat cable, which can reliably connecting a grounding conductor with a grounding bonding pad. The shield flat cable (10) includes a plurality of flat conductors (11) inparallel, which are then wrapped with an insulation film (12, 13); the flat conductors (11) are exposed at at least one end to form cable ends (16); in the shield flat cable, the flat conductors (11)in the flat conductors (11) are covered with shield membrane (14); a grounding conductor (15), which has a stretched part (17) stretched out to the outer side of the shield membrane (14), is electrically contacted with the shield membrane (14); the stretched part (17) is located at the side of the exposed part that exposes the flat conductors (11).

Description

technical field [0001] The present invention relates to a shielded flat cable in which a plurality of conductors are arranged in parallel, covered with an insulating film, and the outer side of which is covered with a common shielding film, and has a conductor electrically connected to a substrate. terminal part. Background technique [0002] Flexible flat cables (FFC) are used in various fields such as AV equipment such as CD and DVD players, OA equipment such as copiers and printers, and internal wiring of other electronic and information equipment for the purpose of space saving and simple connection. use. In addition, as the frequency of use of the equipment increases, the influence of noise increases, so a shielded flat cable with shielding is used. [0003] The shielded flat cable has a terminal portion connected to a connector at the end. At the end portion, a structure (ground conductor) is required for electrically grounding the shielding film to the ground pad i...

Claims

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Application Information

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IPC IPC(8): H01R12/62H01R12/65H01B7/08
CPCH01B7/0838H01B7/0861H01R12/62H01R12/65H01B7/02H01B7/04H01B7/08H01B9/028
Inventor 松田龙男御影胜成小山惠司
Owner SUMITOMO ELECTRIC IND LTD
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