CN202076032U - Shielding flat electric cable - Google Patents
Shielding flat electric cable Download PDFInfo
- Publication number
- CN202076032U CN202076032U CN2011200972880U CN201120097288U CN202076032U CN 202076032 U CN202076032 U CN 202076032U CN 2011200972880 U CN2011200972880 U CN 2011200972880U CN 201120097288 U CN201120097288 U CN 201120097288U CN 202076032 U CN202076032 U CN 202076032U
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- film
- shielded
- earth rod
- shielding
- flat cable
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Abstract
The utility model provides a shielding flat electric cable. Even in a high-temperature environment, the shielding flat electric cable can excellently maintain shielding performance and cannot ensuring that conducting resistance between a shielding thin film and a grounding bar increases. A plurality of flat conductors (13) are arranged in parallel and are coated by insulating thin films (14) in a clamping manner from top to bottom; one single face of the flat conductors (13) is exposed at the end part of at least one side; the shielding thin film (15) is adhered on the insulating thin films (14) of at least one side of the upper and the lower; and the grounding bar (16) is adhered on the outer surface of an end part of the shielding thin film (15) by conductive adhesive agent. A stiffening plate (17) is adhered at an end part of a side which is opposite to the side at which the flat conductors (13) are exposed; and the side at which the flat conductors are exposed is provided with the grounding bar (16) which is adhered on the outer surface of an end part of the shielding thin film. In addition, the shielding thin film (15) can cover the outer surface of the stiffening plate, (17) and then the grounding bar (16) is adhered on the shielding thin film.
Description
Technical field
The utility model relates to a kind of shielded flat cable, this shielded flat cable constitutes and is arranged in parallel many conductors, from being coated by the insulation film clamping up and down, its outside is covered and is shielded by common shielded film, has to be used for the terminal part that connects by connector at least one side end.
Background technology
Flexible flat cable (FFC) is connected to purpose and is used with save spaceization and simplification in a lot of fields such as inside distribution of OA equipment such as AV equipment, photocopier and printers such as CD and DVD player and electronic message unit.In addition, if because the employed frequency of equipment is higher, then The noise becomes big, so use the shielded flat cable that has carried out shielding.The shielding of cable for example utilizes shielded film that the upper and lower surface of FFC is covered and forms.
When cable end piece portion was connected with connector etc., the shielded film of shielded flat cable need be connected with the earth terminal of connector etc.In order to make earth terminal and shielded film electrically conducting, for example patent documentation 1 open shown in, the conductive layer of bar-shaped conductor and shielded film is combined closely, utilize resin to carry out mold pressing and fix or utilize resin sheet to fix.In addition, in patent documentation 2, a kind of technology of utilizing the bonding shielded film of stable on heating bonding agent is disclosed.
Patent documentation 1: TOHKEMY 2003-133781 communique
Patent documentation 2: international disclosing No. 02/05297
The utility model content
The patent documentation 1 disclosed earth rod that makes contacts with the conductive layer surface of shielded film, and utilize resin-molded or resin strip will contact fixing method, the additional process that need be used for fixing earth rod, in addition, the resin that makes the dead earth rod owing to variations in temperature etc. along with around temperature change, may cause the conducting resistance between shielded film conductive layer and the earth rod to increase.
The utility model is exactly In view of the foregoing to propose, and its purpose is to provide a kind of shielded flat cable, even it under hot environment, also can keep shielding properties well, and the conducting resistance between shielded film and the earth rod is increased.
The related shielded flat cable of the utility model is characterised in that, many straps are arranged in parallel, from being coated by the insulation film clamping up and down, at least the single face that exposes strap at a side end, on at least one side insulation film of insulation film up and down, paste shielded film, on the end outer surface of this shielded film, utilize conductive adhesive to be bonded with earth rod.
In the shielded flat cable of the present utility model, at the end place of exposing strap, bonding stiffener on the insulation film of that side of not exposing strap, bonding earth rod on the end outer surface of the shielded film of that side of exposing strap.Perhaps, also can make the outer surface of shielded film covering stiffener, bonding above it earth rod.
In addition, shielded film is covered do not expose strap that side insulation film the outer surface that comprises the end and paste, bonding above it earth rod, in addition, also can be at the bonding side by side stiffener in a narrow margin of the front of earth rod.
The effect of utility model
According to the utility model, when inserting cable end piece portion in the electric connector, the chimeric pressure that produces between utilization and the electric connector makes earth rod contact reliably with shielded film.Even under hot environment, contacting of shielded film and earth rod can not become unstable yet, and thus, conducting resistance can not worsen yet.
Description of drawings
Fig. 1 is the figure of explanation summary of the present utility model.
Fig. 2 is the profile of explanation execution mode of the present utility model.
Fig. 3 is the profile of explanation other execution mode of the present utility model.
Embodiment
According to Fig. 1 summary of the present utility model is described.Fig. 1 (A) is that expression is arranged on the figure that strap exposes the example of side with earth rod, and Fig. 1 (B) is that expression is arranged on the figure of example that strap exposes the opposition side of side with earth rod.Among the figure, 11 expression shielded flat cables, 12 expression cable end piece portions, 13 expression straps, 14 expression insulation films, 14a represents the upside film, 14b represents the downside film, 15 expression shielded films, 16 expression earth rods, 17 expression stiffeners, 18 expression insulators.
The related shielded flat cable 11 of the utility model shown in Fig. 1 (A), the flat cable that for example uses many straps 13 with the paper tinsel shape to be arranged in parallel and two face (upper and lower surface) is insulated by insulation film 14 clampings and coats.At at least one side end place of flat cable, the upside film 14a removal with insulation film 14 is partly exposed the strap as the contact connecting portion that contacts with the contact terminal brace of connector, forms cable end piece portion 12.In addition, on the downside film 14b that in cable end piece portion 12, does not have to remove, paste resinous stiffener 17, can be to have to the intensity of connector (edge connector of slot type) plug.
At least the single face side of the outer surface of insulation film 14 covers (illustrate in the drawings shielded film 15 is wound on the cable and cover the example of two faces) by shielded film 15 and shields.The film that shielded film 15 for example uses the layering shape by insulating barrier, metal level, tack coat to constitute makes this metal level be positioned at the outside and shielded film 15 is wound on the outer surface of insulation film 14, and utilizes bonding agent etc. to paste.Also can form 3 layers of structure with the stratiform adhesive-applying in advance.In addition, shielded film 15 is exposing a side (hereinafter referred to as upside) of strap 13, with the end with respect to strap 13 across not can and strap 13 between produce the distance L of electric short circuit degree (0.2mm～10mm) be positioned at the mode at rear (near ends of cable central authorities) and paste.And be pasted with a side (hereinafter referred to as downside) of stiffener 17, pasting in the mode that is connected with the end of stiffener in the rear end of stiffener 17 (near an end of cable central authorities).
On the shielded film 15 of upside, be adhesively fixed with earth rod 16 via conductive adhesive, this earth rod 16 is used for being connected with the earthy contact terminal of electric connector etc.In addition, the part of the surface of the metal level of shielded film 15 except the part of pasting earth rod 16 by insulator 18 coverings that formed by the film identical with insulation film 14, carried out electric insulation and protected it to avoid damage.
In the example shown in Fig. 1 (B), the shielded film 15 of upside and the example of Fig. 1 (A) in the same manner, with end edge with respect to strap 13 across not can and strap 13 between produce the distance L of electric short circuit degree (0.2mm～10mm) be positioned at the mode at rear and paste.And,, paste the shielded film 15 of downside in the mode that covers the part except the fore-end of stiffener 17 at the downside that is pasted with stiffener 17.
And earth rod 16 is adhesively fixed on shielded film 15 tops of downside via conductive adhesive, and the shielded film of this downside stacks and sticks on the stiffener 17.In addition, the situation of the outer surface of shielded film 15 and Fig. 1 (A) in the same manner, the part insulated body 18 except the part of pasting earth rod 16 covers, and the surface of metal level is carried out electric insulation and protected it to avoid damage.
The strap 13 that signal is used is for example formed by conductive metal such as Copper Foil, zinc-plated soft copper paper tinsels, according to signal electric current transmitted value and difference, for example forming thickness is 12 μ m～100 μ m, and width is 0.2～0.8mm degree, is that 0.5～1.0mm arranges with spacing P.The ordered state of this strap 13 keeps by upper and lower sides film 14a, the 14b clamping by insulation film 14.
Upper and lower sides film 14a, 14b have adhesive linkage (omitting diagram) on the surface (composition surface) within it.Upper and lower sides film 14a, 14b self use the good ordinary resin film of flexibility, the resin film that can use for example mylar, polyphenylene sulfide, polyimide resin etc. to have versatility.As the thickness of this resin film, use the film of 9 μ m～50 μ m.As mylar, can enumerate resin materials such as polyethylene terephthalate resin, Polyethylene Naphthalate resin, PBN resin.In addition, in above-mentioned resin material,, preferably use polyethylene terephthalate resin from viewpoints such as electrical characteristic, mechanical property, costs.
Shielded film 15 for example use have aluminium foil or Copper Foil metal formings such as (thickness 5 μ m～50 μ m), as the resin bed in intermediate layer and be positioned at film of 3 layers of such structure of thermoplastic adhesive's layer (thickness 10 μ m～50 μ m) on this resin bed etc.In addition, it is the resin film of 9 μ m degree that resin bed uses the polyethylene terephthalate equal thickness, but under the sufficient situation of the intensity of metal forming, also can omit this resin bed.
As the form that this shielded film 15 is pasted to cable, make metal forming be positioned at the outside, the film that utilizes 1 wide cut to be to reel the modes of insulation film 14 whole parcels, utilizes above-mentioned bond layer to carry out bonding and with bulk shielding.
Earth rod 16 and strap 13 are for example formed by the zinc-plated Copper Foil of thickness 9 μ m～100 μ m etc. in the same manner.This earth rod 16 and shielded film 15 between contact-making surface on, with conductive adhesives such as thickness 10 μ m～50 μ m coating silver paste, thereby in electrically conducting, be adhesively fixed with shielded film 15.As the conductive adhesive under this situation, can utilize thermoplasticity or thermosetting bonding agent.If owing to use the thermosetting bonding agent, then bonding agent is not softening under hot environment, so further reduce the unsettled possibility of contact between shielded film and the earth rod.
Fig. 2 is the profile of explanation execution mode of the present utility model, label among the figure use in the explanation with Fig. 1 the identical label of the label that uses, thereby omit detailed explanation.
The shielded flat cable of the form that Fig. 2 (A), (B) and Fig. 1 (A) are illustrated is corresponding, at the leading section that exposes the shielded film 15a on the upside film 14a of strap 13, utilizes the conductive adhesive earth rod 16 that is adhesively fixed.Make the end of earth rod 16 and shielded film 15a be in same position.Do not exposing the stiffener 17 that is adhesively fixed on the downside film 14b of strap 13.
Shown in Fig. 2 (A), the shielded film 15b of downside sticks on the downside film 14b side of the stiffener 17 that is adhesively fixed.Utilize the shielded film 15a of upside and the shielded film 15b of downside, with upper and lower sides film 14a, 14b bulk shielding.But, also can be shown in Fig. 2 (B), the shielded film 15a with the bonding upside of earth rod 16 only is set, omit the shielded film 15b of downside.In addition, because the outside of shielded film 15a, 15b is a metal level, so, preferably cover by insulator 18a, 18b for electric insulation and protection.In addition, under the situation of the shielded film 15b that shown in Fig. 2 (B), has omitted downside, also can omit the insulator 18b that covers downside.
Fig. 2 (C), (D) are corresponding with the shielded flat cable of the form of explanation in Fig. 1 (B), the fore-end of the shielded film 15b of the downside on the downside film 14b will be pasted on, paste in the mode that covers reinforced sheet 17, wherein, be adhesively fixed with stiffener 17 on the downside film 14b.And, utilize conductive adhesive, earth rod 16 is adhesively fixed on the leading section office of the shielded film 15b of downside.
Shown in Fig. 2 (C), the shielded film 15a of upside only covers the surface of insulation film 14a, with the shielded film 15b of downside with upper and lower sides film 14a, 14b bulk shielding.But, also can be shown in Fig. 2 (D), the shielded film 15b with the bonding downside of earth rod 16 only is set, omit the shielded film 15a of upside.In addition, because the outside of shielded film 15a, 15b is a metal level, so, preferably cover by insulator 18a, 18b for electric insulation and protection.In addition, under the situation of the shielded film 15a that shown in Fig. 2 (D), has omitted upside, also can omit the insulator 18a that covers upside.
Fig. 3 is the profile of explanation other execution modes of the present utility model, in the label use among the figure and Fig. 1,2 the explanation the identical label of the label that uses, thereby omit detailed explanation.
In Fig. 3 (A)～(D), to in Fig. 1,2, illustrated resin system stiffener 17 double as be earth rod 16, for example thicklyer realize to improve intensity or the higher electric conducting material of working strength by earth rod being formed compare with employed earth rod among Fig. 1,2.
Thus, in the example of Fig. 3, stick on the front end of the shielded film 15b of the downside on the downside film 14b, form with the front end of downside film 14b and align, wherein, downside film 14b is positioned at that side of not exposing strap 13.And, shown in Fig. 3 (A), (B), make earth rod 16 be positioned at front end positions aligning with the shielded film 15b of downside, and utilize conductive adhesive to be adhesively fixed.Thus, earth rod 16 also with the function as the stiffener of shielded flat cable, can be omitted in the stiffener 17 shown in Fig. 1,2, and its result can make the attenuation of cable end piece portion.
Sometimes the residual burr in end of earth rod 16 and shielded film 15b, might and signal conductor 13 between short circuit.Shown in Fig. 3 (C), (D), the end of shielded film 15b and the end of earth rod 16 are adhesively fixed in the position in the close cable of cable front end slow astern set a distance (0.2mm～10mm degree).And, the part place between the front end of cable front end and shielded film 15b and earth rod 16, with earth rod 16, the shielded film 15b state setting arranged side by side stiffener 17a that forms by insulating material in a narrow margin, and be adhesively fixed.Thus, make the insulation distance between earth rod 16, shielded film 15b and the signal conductor 13 become big, can suppress electric short circuit.
In addition, in Fig. 3 (A), (C), with the example of Fig. 2 (A), (C) in the same manner, the shielded film 15a that exposes the upside of strap 13 sides covers the surface of upside film 14a, with the shielded film 15b of downside upper and lower sides film 14a, 14b integral body is shielded.But, also can be shown in Fig. 3 (B), (D), the shielded film 15b with the bonding downside of earth rod 16 only is set, omit the shielded film 15a of upside.In addition, because the outside of shielded film 15a, 15b is a metal level, so, cover by insulator 18a, 18b for electric insulation and protection.In addition, under the situation of the shielded film 15a that shown in Fig. 3 (B), (D), has omitted upside, can omit the insulator 18a that covers upside.
The shielded flat cable of said structure is when inserting cable end piece portion in the electric connector, and the mode of pushing earth rod with the earthy contact terminal of electric connector is connected.If push earth rod, then can strengthen contacting between the metal level with its inboard shielded film, conducting resistance is reduced and form the connection of good ground connection.Its result even under hot environment, also can suppress to be present in the conducting resistance increase of the conductive adhesive between earth rod and the shielded film, can prevent the deterioration of function of shielding.
Above-mentioned shielded flat cable can pass through the thickness of the insulation film of change clamping strap, and makes the impedance of cable become setting.In addition, the utility model comprises the shielded flat cable that is applicable to high frequency, and it has the intermediate layer that is made of with dielectric the impedance adjustment between insulation film and shielded film.
Claims (7)
1. a shielded flat cable is characterized in that,
Many straps are arranged in parallel, from being coated by the insulation film clamping up and down, at least the single face that exposes described strap at a side end, on at least one side insulation film of described insulation film up and down, paste shielded film, on the end outer surface of this shielded film, utilize conductive adhesive to be bonded with earth rod.
2. shielded flat cable according to claim 1 is characterized in that,
Place, end exposing described strap is bonded with stiffener on the insulation film of that side of not exposing strap.
3. shielded flat cable according to claim 2 is characterized in that,
On the shielded film of that side of exposing described strap, be bonded with described earth rod.
4. shielded flat cable according to claim 2 is characterized in that,
Described shielded film covers the outer surface of described stiffener, is bonded with described earth rod above it.
5. shielded flat cable according to claim 1 is characterized in that,
Described shielded film covers the insulation film of that side of not exposing described strap and pastes, and is bonded with earth rod above it.
6. shielded flat cable according to claim 5 is characterized in that,
The front end of described shielded film and the front end of earth rod are positioned at the front end of cable.
7. shielded flat cable according to claim 5 is characterized in that,
The front end of described earth rod and the front end of described shielded film are compared with the cable front end and are positioned near on the position of cable, between the front end of the front end of described shielded film and earth rod and described cable, are bonded with stiffener on insulation film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200972880U CN202076032U (en) | 2011-04-02 | 2011-04-02 | Shielding flat electric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200972880U CN202076032U (en) | 2011-04-02 | 2011-04-02 | Shielding flat electric cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076032U true CN202076032U (en) | 2011-12-14 |
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ID=45114124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200972880U Expired - Lifetime CN202076032U (en) | 2011-04-02 | 2011-04-02 | Shielding flat electric cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076032U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240793A (en) * | 2016-03-28 | 2017-10-10 | 巧连科技股份有限公司 | Bus bar connector |
| CN110383396A (en) * | 2017-02-28 | 2019-10-25 | 住友电气工业株式会社 | Shielded flat cable |
| CN110415876A (en) * | 2018-04-27 | 2019-11-05 | 住友电气工业株式会社 | Shielded flat cable |
| CN110957064A (en) * | 2018-09-26 | 2020-04-03 | 贝尔威勒电子（昆山）有限公司 | Long-strip-shaped high-frequency flexible flat cable |
| CN112106151A (en) * | 2018-04-27 | 2020-12-18 | 住友电气工业株式会社 | Shielded flat cable |
| US11270811B2 (en) | 2019-12-03 | 2022-03-08 | Japan Aviation Electronics Industry, Limited | Connecting object, connector and harness |
| US11303053B2 (en) | 2019-12-03 | 2022-04-12 | Japan Aviation Electronics Industry, Limited | Connector assembly |
-
2011
- 2011-04-02 CN CN2011200972880U patent/CN202076032U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240793A (en) * | 2016-03-28 | 2017-10-10 | 巧连科技股份有限公司 | Bus bar connector |
| TWI762593B (en) * | 2017-02-28 | 2022-05-01 | 日商住友電氣工業股份有限公司 | shielded flat cable |
| CN110383396A (en) * | 2017-02-28 | 2019-10-25 | 住友电气工业株式会社 | Shielded flat cable |
| US11145437B2 (en) | 2017-02-28 | 2021-10-12 | Sumitomo Electric Industries, Ltd. | Shielded flat cable |
| CN110415876A (en) * | 2018-04-27 | 2019-11-05 | 住友电气工业株式会社 | Shielded flat cable |
| CN112106151A (en) * | 2018-04-27 | 2020-12-18 | 住友电气工业株式会社 | Shielded flat cable |
| CN112106151B (en) * | 2018-04-27 | 2022-07-08 | 住友电气工业株式会社 | Shielded flat cable |
| CN110415876B (en) * | 2018-04-27 | 2022-06-21 | 住友电气工业株式会社 | Shielding flat cable |
| CN110957064A (en) * | 2018-09-26 | 2020-04-03 | 贝尔威勒电子（昆山）有限公司 | Long-strip-shaped high-frequency flexible flat cable |
| CN110957064B (en) * | 2018-09-26 | 2021-04-09 | 贝尔威勒电子（昆山）有限公司 | Long-strip-shaped high-frequency flexible flat cable |
| TWI761991B (en) * | 2019-12-03 | 2022-04-21 | 日商日本航空電子工業股份有限公司 | Connector assembly |
| US11303053B2 (en) | 2019-12-03 | 2022-04-12 | Japan Aviation Electronics Industry, Limited | Connector assembly |
| US11270811B2 (en) | 2019-12-03 | 2022-03-08 | Japan Aviation Electronics Industry, Limited | Connecting object, connector and harness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |
|
| CX01 | Expiry of patent term |