GB2479338A

GB2479338A - A flat shielded transmission cable

Info

Publication number: GB2479338A
Application number: GB201000079A
Authority: GB
Inventors: Chen-Che Lin
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-05
Filing date: 2010-01-05
Publication date: 2011-10-12
Also published as: GB201000079D0

Abstract

A flat shielded transmission cable comprises a plurality of cores 1, an insulator 6 around the cores, a grounding or drain line 2, an aluminium conductor shield layer 3 and an external cladding layer 4. The cores 1 may carry signals and/or power (figs 4 to 6). The height of the transmission cable is reduced, facilitating furling actions. Electrostatic discharge (ESD) prevention is enhanced by the electrical connection between the grounding line and the conductor layer.

Description

TRANSMISSION CABLE

BACKGROUND OF THE INVENTION

1. Field of the Invention

100011 The present invention relates to a transmission cable; particularly, the present invention relates to a transmission cable having a flat shape.

2. Description of Related Art

100021 Transmission cables are comprehensively applied on various electronic devices; e.g., connections between communication appliances like network servers and telephones and so forth, as well as linkages between numerous types of peripheral devices such as computer mice and keyboards.

100031 Refer first to Figure 1, wherein a conventional transmission cable as shown comprises a plurality of transmission lines, a conductor layer 73 and an external cladding layer 74. The plurality of transmission lines consist of a plurality of power lines 71 and a plurality of signal lines 72, adjacently bundled into one string. Each power line 71 includes a power core layer 711 and an insulation layer 712 wrapped onto the exterior of the power core layer 711, while each signal line 72 also similarly includes a signal core layer 721 and an insulation layer 722 wrapped onto the exterior of the signal core layer 721. The conductor layer 73 is wrapped onto the exterior of the transmission lines. The external cladding layer 74 is wrapped onto the exterior of the conductor layer 73. In this approach, the profile of the transmission cable is a circular-shaped tube.

100041 In use, the circular-shaped tube profile of the conventional transmission cable may cause inconvenience for layout arrangement due to its significant protrusion from the location of installation, resulting in disorder at the working environment, or maybe even stumbling risks, which may undesirably affect the user and also the electronic devices to which the transmission cable connects.

100051 When the conventional transmission cable is out of service, the circular-shaped tube profile thereof may lead to furling problems, and the volume occupied by the folded transmission cable may become loosely large, thus causing difficulties in transportation and storage.

100061 Furthermore, the conductor layer 73 in the conventional transmission cable provides the effect of electromagnetic shielding. As the emphasis on transmission quality is gradually increasing, the effect of electromagnetic shielding should be also accordingly improved.

100071 As such, the inventors of the present invention, in consideration of the aforementioned drawbacks found in prior art, have made thorough studies and efforts for disclosure of the present invention enabling reasonable designs and effective improvements on the above-illustrated defects.

SUMMARY OF THE INVENTION

100081 An essential objective of the present invention is to provide a transmission cable so as to facilitate furling actions, to enhance electromagnetic shielding effects, and to prevent electrostatic discharge (ESD) damage.

100091 To achieve the objective set forth as above, the present invention provides a transmission cable comprising, a plurality of core layers which are laterally arranged and separated by an interval as at least one row; an insulator which is wrapped onto the exterior of such core layers; a grounding line which is laterally juxtaposed on one side of the insulator; a conductor layer which is wrapped onto the exterior of the insulator, and the grounding line being contacted to the conductor layer; and an external cladding layer being flat in shape, which is wrapped onto the exterior of the conductor layer and the grounding line.

[00101 The core layers are arranged and separated by an interval as at least one row, whose exterior is wrapped only by an insulator, thereby lessening the number of elements and occupied volume; besides, the external cladding layer is wrapped onto the exterior of the conductor layer and the grounding line, and the external cladding layer is flat in shape, such that the height of the transmission cable according to the present invention is reduced thereby allowing convenient furling actions.

100111 Due to the conductor layer is wrapped onto the exterior of the insulator, it results in enhancing electromagnetic shielding effect for the transmission cable according to the present invention.

[00121 The grounding line contacts to the conductor layer, so that the function of electrostatic discharge protection in accordance with the transmission cable according to the present invention increases accordingly.

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a cross-section view for a conventional transmission cable.

100141 Figure 2 is a cross-section view for a first embodiment of the transmission cable according to the present invention.

100151 Figure 3 is a diagram for the transmission cable in use according to the present invention.

100161 Figure 4 is a cross-section view for a second embodiment of the transmission cable according to the present invention.

100171 Figure 5 is a cross-section view for a third embodiment of the transmission cable according to the present invention.

100181 Figure 6 is a cross-section view for a fourth embodiment of the transmission cable according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

100191 In order to further construe the technical means and effects adopted by the present invention to achieve the prescribed objective, references are made to the subsequent detailed descriptions and drawings in connection with the present invention, and it is believed that, through which, the purposes, characteristics and features provided by the present invention can be profoundly and concretely appreciated; nevertheless, the appended drawings provided herein are simply exemplary for references and illustrations, rather than being intended to limit the present invention thereto.

[0020] Refer now to Figure 2, wherein a first embodiment of the transmission cable according to the present invention is shown. The present embodiment is a type of transmission cable, comprising a plurality of core layers, an insulator 6, a grounding line 2, a conductor layer 3 and an external cladding layer 4.

100211 In the first embodiment, The core layers are a plurality of signal core layers 1. Each of the signal core layers 1 is composed of a plurality of twisted conductors, and these signal core layers 1 are laterally arranged into at least one row.

[00221 The insulator 6 is made of insulate materials, which is wrapped onto the exterior of the signal core layers 1, and the signal core layers 1 are disposed and separated by an interval inside the insulator 6, with no mutual contact therein between, thereby allowing the insulator 6 and the signal core layers 1 to be persistently held as an entirety.

100231 The grounding line 2 is made of a conductive material. The grounding line 2 is laterally juxtaposed on one side of the insulator 6.

100241 The conductor layer 3 is a metal component, e.g., an aluminum foil. The conductor layer 3 is wrapped onto the exterior of the insulator 6, and the grounding line 2 is electrically connecting to the conductor layer 3 so as to enhance its capability in grounding conductivity. In the Figure, the grounding line 2 and the insulator 6 are conjunctively wrapped inside the conductor layer 3, but not limited thereto. In other word, the grounding line 2 may be also placed at the outside of the conductor layer 3 (not shown). In the present embodiment, the number of the conductor layer 3 is one; certainly, the number of the conductor layer 3 may be of multiplicity.

100251 The external cladding layer 4 is made of an insulating material.

The external cladding layer 4 is wrapped onto the exterior of the conductor layer 3 and the grounding line 2, and the external cladding layer 4 is flat in shape; that is, the lateral width Wi of the external cladding layer 4 is greater than the longitudinal height Hi thereof. In this way, the longitudinal height H 1 of the transmission cable according to the present invention is less than the one of the conventional transmission cable, thereby facilitating convenient furling actions.

[00261 In use, the circular-shaped tube profile of the transmission cable enables very handy arrangement and settlement. Especially, as shown in Figure 3, the excessive portion of the transmission cable can be rolled up and placed in a line-winding box 5, thereby offering a neat and ordered working environment, and preventing possible stumbling problems. Hence, the user as well as the electronic devices to which the transmission cable connects will be unaffected.

[00271 When the transmission cable is out of service, as shown also in Figure 3, it can be pulled and rolled back into the line-winding box 5, so as to shrink the volume of the transmission cable for offering a easy way to hand-carry or to store by the user.

100281 Additionally, both sides of the transmission cable are respectively connected to a first connector 51 and a second connector 52. The grounding line 2 is in contact with the conductor layer 3 electrically, such that the conductor layer 3 contacts to the first connector 51 and/or the second connector 52 through the grounding line 2, thus enabling improvement on the effect of electromagnetic shielding in the transmission cable according to the present invention, thereby increasing the transmission quality thereof.

[0029] Refer next to Figure 4, wherein a second embodiment according to the present invention is shown. The difference between the present and the first embodiments essentially lies in that: the core layer in the present embodiment are a plurality of power core layers 1'. Each of the power core layers 1' is made of a string of conductor, and the power core layers 1' are laterally arranged and separated by an interval as at least one row, so as to reduce the integral height thereof.

100301 Refer to Figure 5, wherein a third embodiment according to the present invention is shown. The difference between the present and the first embodiments essentially lies in that: the core layer consists of a plurality of signal core layers 1, as well as a plurality of power core layers 1' disposed on the outside of the signal core layers 1. The signal core layers 1 and power core layers 1' are laterally arranged and separated by an interval as at least one row, so as to reduce the integral height thereof.

[00311 Refer subsequently to Figure 6, wherein a fourth embodiment according to the present invention is shown. The difference between the present and the third embodiments lies in that: the signal core layers 1 and the power core layer 1' are in this case laterally arranged into two rows and the exteriors thereof are similarly wrapped with the insulator 6. The external cladding layer 4 is wrapped onto the exterior of the conductor layer 3 and is flat in shape; that is, the lateral width W2 of the external cladding layer 4 is greater than the longitudinal height H2 thereof.

100321 Additionally, the number of the grounding lines 2 in the aforementioned embodiments may be two (not shown), with each of the two grounding lines 2 being laterally juxtaposed on both sides of the insulator 6 and being contacted to the conductor layer 3.

100331 As such, the transmission cable according to the present invention provides the following advantages: [00341 1. The plurality of core layers are laterally arranged and separated by an interval as at least a row, and the exterior thereof is wrapped with only an insulator, so there is no need to wrap each of the core layers with an insulation layer per the prior art, and the number of elements and the occupied volume can be accordingly lessened. Besides, the external cladding layer forming to be flat in shape, is wrapped outside of the conductor layer and the grounding line, such that the height of the transmission cable according to the present invention can be reduced for convenient furling actions, thereby facilitating arrangement, transportation, and storage; 100351 2. the capability of grounding conductivity in the grounding line can be improved by means of the electrical contact thereof with the conductor layer, so as to enhance the feature regarding to prevention of electrostatic discharge damage in the transmission cable according to the present invention, and the effect of electromagnetic shielding in the present invention can be also improved through the placement of the conductor layer thereby enabling elevation in transmission quality therefore.

100361 The aforementioned disclosures simply illustrate the detailed descriptions and drawings for the embodiments according to the present invention, rather than being intended to restrict the present invention and the characteristics thereof. All effectively equivalent modifications, alternations or substitutions made by those skilled ones in the technical field of the present invention without departing from the spirit thereof are reasonably deemed to be encompassed by the scope of the present invention defined in the following claims.

Claims

WHAT IS CLAIMED IS: 1. A transmission cable, comprising: a plurality of core layers, being laterally arranged and separated by an interval as at least one row; an insulator, being wrapped onto the exterior of the core layers; a grounding line, being laterally juxtaposed on one side of the insulator; a conductor layer, being wrapped onto the exterior of the insulator, and the grounding line being contacted to the conductor layer; and an external cladding layer, being wrapped onto the exterior of the conductor layer and the grounding line, and the external cladding layer being flat in shape.
2. The transmission cable according to claim 1, wherein the plurality of core layers are a plurality of power core layers.
3. The transmission cable according to claim 1, wherein the plurality of core layers are a plurality of signal core layers.
4. The transmission cable according to claim 1, wherein the plurality of core layers include a plurality of power core layers and a plurality of signal core layers.
5. The transmission cable according to claim 1, 2, 3 or 4, wherein the conductor layer is an aluminum foil.
6. The transmission cable according to claim 1, 2, 3 or 4, wherein the lateral width of the external cladding layer is greater than the longitudinal height thereof.
7. A transmission cable substantially as hereinbefore described with reference to and as shown in Figures 2 to 6 of the accompanying drawings.