JP4164979B2 - Ultra-fine coaxial flat cable and its terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the technical field of an ultrafine coaxial flat cable configured by arranging a number of ultrafine coaxial wires in parallel with a shield of a horizontal winding specification on a core using a conductor of 36 AWG or less.
[0002]
[Prior art]
Since the ultrafine coaxial line has the smallest possible cable diameter and emphasizes bending characteristics, a laterally wound shield is adopted as a shield applied on the core made of an insulated conductor.
[0003]
FIG. 3 shows an example of the structure of this type of ultrafine coaxial wire. An insulator 2 is applied on a conductor 1 obtained by twisting seven strands, and a horizontally wound shield 3 is formed on the obtained core. And jacket 4 is applied.
[0004]
FIG. 4 shows an ultra-fine coaxial flat cable 9 constructed by using a micro coaxial cable 8 having the above-described structure, flattened by laminating a large number of these coaxial cables 8, 5, 5. The terminal part of is shown. At the terminal portion, the laminate tape is stripped, and the jacket of each coaxial line is also stripped to expose the laterally wound shield as shown in the figure.
[0005]
By the way, the horizontal winding shield in each of the fine coaxial lines arranged in parallel as described above has conventionally been horizontally wound in the same direction (right winding in FIG. 4) in any coaxial line as shown in FIG.
[0006]
[Problems to be solved by the invention]
In the conventional fine coaxial flat cable 9 shown in FIG. 4, when the strip is stripped as shown in FIG. 4 at the end portion and the horizontally wound shield is exposed, the strip cannot be stripped straightly, and there is a slight variation in the line-to-line pitch. Was produced. This means that when the micro coaxial cable 5 with the horizontal winding shield is arranged in parallel and flattened, the horizontal winding strands of the horizontal winding shield are all oblique and directed in the same direction (right direction) as shown in FIG. This is because, when the jacket is stripped, it is affected by the force of the lateral winding rotation of the lateral winding strands that are inclined obliquely as described above.
[0007]
Further, when the pitch is reduced to the horizontal winding pitch, it becomes difficult to straighten the flattened multi-core coaxial strip, and the problem that the pitch between the lines varies is further increased. If the line pitch varies, there is a problem that it takes much time to connect the center conductor of each micro coaxial line to a connector terminal group or a circuit on the board arranged at a predetermined pitch.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide an ultra-fine coaxial flat cable and a terminal portion thereof capable of smoothly stripping a jacket in a straight line and preventing the pitch between cores from being disturbed with respect to ultra-coaxial wires adopting laterally wound shields arranged in parallel. Is to provide.
[0009]
[Means for Solving the Problems]
The ultra-fine coaxial flat cable provided by the present invention includes 20 or more cores arranged in parallel at a line pitch of 1 mm or less, with a fine-coaxial wire having a structure in which a horizontally wound shield is provided on a core using a conductor having an outer diameter of 0.1270 mm or less. The above-mentioned laterally wound shield is wound in the right direction and the above-mentioned laterally wound shield is wound in parallel on the left side and alternately laminated in parallel. The ultra-thin coaxial flat cable is a strip of lump tape and the jacket of each micro-coaxial wire, and strips the terminal-side laminating tape and the jacket of each micro-coaxial line to provide a horizontal winding shield. exposed, with, when stripping the jacket of each very thin coaxial cables with strip machine, straight strips It is obtained by the. In this way, by making the winding direction of the horizontally wound shield applied on the fine coaxial line opposite between adjacent coaxial lines, the force exerted by the horizontally wound rotation between adjacent coaxial lines is canceled; The force of the extra fine coaxial line is made so as not to affect other extra fine coaxial lines or the entire cable.
[0011]
In addition, it is possible to provide a micro coaxial flat cable in which the winding directions of the tapes forming the jackets of the micro coaxial cables are alternately arranged in adjacent micro coaxial cables in different directions.
[0012]
Further, the micro-coaxial flat cable that provided by the present invention, the very thin coaxial cables structures subjected to laterally wound shield on the core with the following conductor outer diameter 0.1270mm in the following line pitch 1 mm 20-core or It is arranged in parallel, laminated tape these micro-coaxial line winding direction of the laterally wound shielding winding direction right very thin coaxial cable and the laterally wound shield arranged in parallel alternately very thin coaxial cables on the left a micro-coaxial flat cable that is flattened by, removing the jacket of the terminal side of the laminating tape and the very thin coaxial cables with one Kukusu trip the jacket of the laminate tape and the very thin coaxial cables of the micro coaxial flat cable and, exposing the laterally wound shielding, in the same manner each respective center conductors of the very thin coaxial cable that strip circuit connector terminal or board It is those that continue to composed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of an ultrafine coaxial flat cable according to the present invention.
[0014]
The ultra-fine coaxial flat cable of this embodiment uses an ultra-fine coaxial wire 8 having a structure as shown in FIG. 3 and uses 0 fluororesin as an insulator 2 on a conductor 1 in which seven 0.04 mm silver-plated alloy wires are twisted. .Coating to 11mm thickness. A horizontal winding shield 3 was applied on the obtained core with a 0.032 mm hard copper wire. At this time, two types are produced: a horizontal coaxial shield in which the winding direction of the hard copper wire of the horizontal winding shield 3 is right-handed and an ultra-fine coaxial wire in which the winding direction of the horizontal copper shield 3 is a left-hand winding. A jacket 4 was applied to 3 by winding a polyester tape having a thickness of 0.04 mm twice.
[0015]
The thus obtained horizontal winding direction of the laterally wound shield is a right-handed ultrafine coaxial line, and the laterally wound shield of the laterally wound direction is a left-handed ultrafine coaxial line. Reference numerals 5 and 6 in FIG. As shown in the figure, the windings are arranged alternately with a pitch of 0.635 mm, and 76 wires are arranged in parallel. Are laminated with tape 7 to complete an ultrafine coaxial flat cable 9 '.
[0016]
This ultra fine coaxial flat cable 9 'is set in a strip machine, and the carbon dioxide laser is used to cut the tape 7 and all the jackets 4 of the ultra fine coaxial lines 5, 6, 5, 6. The tape 7 and the jacket 4 of each fine coaxial line were stripped while being pressed from above and below.
[0017]
FIG. 2 shows the end portion of the fine coaxial flat cable 9 'obtained as described above, and the end of each of the fine coaxial wires 5, 6, 5, 6. Alternating winding and left winding. Each of the fine coaxial lines 5, 6, 5, 6... Is stripped from a horizontal winding shield, and the core insulator 2 is similarly stripped to be processed into a connector.
[0018]
Thus, no variation was found in the line pitch after stripping. This is a result of the straight stripping without any bias in the force affecting the stripping machine, because the force due to the rotation of the flat cable 9 ′ is canceled by the adjacent micro coaxial lines 5 and 6. In addition, the burden on the strip machine could be reduced.
[0019]
【The invention's effect】
As described above, according to the present invention, the ultra-thin coaxial flat cable capable of smoothly stripping the jacket in a straight manner and preventing the pitch between the cores from being disturbed with respect to the micro-coaxial wires adopting the horizontal winding shield arranged in parallel, and The intended problem of providing the terminal portion; the purpose can be achieved, and this type of ultra-thin flat cable excellent in terminal workability and connector mounting workability can be provided.
[Brief description of the drawings]
FIG. 1 is a cross sectional explanatory view showing an embodiment of a micro coaxial flat cable according to the present invention.
FIG. 2 is an explanatory front view showing an embodiment of a terminal portion of a micro coaxial flat cable according to the present invention.
FIG. 3 is a cross-sectional explanatory view of a micro coaxial cable.
FIG. 4 is a cross-sectional explanatory view showing a terminal portion of a conventional micro coaxial flat cable.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Conductor 2 Insulator 3 Horizontal winding shield 4 Jacket 5 Extra-fine coaxial line (Horizontal winding right-hand winding)
6 extra fine coaxial cable (horizontal winding shield left winding)
7 Laminate tape 8 Micro coaxial cable 9 'Flat cable

Claims (3)

Will have a very thin coaxial cables structures subjected to laterally wound shield on the core with the following conductor outer diameter 0.1270mm arranged in parallel 20-core more in the following line pitch 1 mm, the winding direction of the laterally wound shield winding direction of the right micro-coaxial line and the laterally wound shield a very thin coaxial flat cable that is flattened by laminating with tape these very thin coaxial cables arranged in parallel alternately and very thin coaxial cables on the left, The ultra-fine coaxial cable is characterized in that the laminate tape of the above-mentioned ultra-fine coaxial flat cable and the jacket of each ultra-fine coaxial line are collectively stripped, the laminate tape on the terminal side and the jacket of each ultra-fine coaxial line are removed, and the horizontal winding shield is exposed. Flat cable. Arranged alternately in very thin coaxial cable adjacent the winding direction of the tape forming the jacket of each very thin coaxial cables in the different directions, according to claim 1 Symbol placement of micro coaxial flat cable. 20 or more cores are arranged in parallel with a pitch between lines of 1 mm or less on a core using a conductor having an outer diameter of 0.1270 mm or less on a core. these very thin coaxial cables winding direction of the right micro-coaxial line and the laterally wound shield arranged in parallel alternately and very thin coaxial cables on the left a micro-coaxial flat cable that is flattened by laminating with tape, and one Kukusu trip the laminate tape and the jacket of the very thin coaxial cables of the micro coaxial flat cable to remove the jacket of the terminal side of the laminating tape and the very thin coaxial cable, to expose the laterally wound shield and stripped in a similar manner ultrafine according to claim 1 or 2, characterized by being connected to respective central conductors of the very thin coaxial cables to a circuit connector terminal or board Axis flat cable.

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