CN216597110U - High-frequency signal line - Google Patents

Abstract

The application relates to a high-frequency signal wire, which comprises a core wire, a hot-melt metal foil and a metal wrapping tape which are sequentially arranged from inside to outside, wherein the metal wrapping tape comprises an adhesive layer arranged on the inner side; the hot-melt metal foil wraps the core wire in a direct wrapping mode, and a plurality of radial sections of the hot-melt metal foil along the extension direction of the core wire are consistent; this application is through means such as hot melt metal foil directly wraps, replaces the high-cost material of traditional wire rod, can be under the prerequisite that does not influence high frequency signal transmission quality, the cost of very big reduction wire rod.

Description

High-frequency signal line

Technical Field

The application relates to the field of signal transmission wires, in particular to a high-frequency signal wire.

Background

With the rapid development of digitization technology and the rapid increase of the amount of transmitted information, the demand for the quantity and quality of data transmission cables is also increasing synchronously, and transmission cables capable of transmitting data at a faster speed than ever are required.

Because the current market demands for high-speed transmission wires such as USB4.0 Cable, TBT4.0 Cable, VR Cable and Active Cable are increasing, when high-frequency signals are transmitted, common wires are generally used as differential signals for data transmission, and the market demands of the wires are gradually increasing; the traditional wire is formed by winding and covering a layer of copper wire on a core wire, and then coating copper, cooking and color mylar tape, so that the condition of damping resonance generated in a high frequency band in the transmission process is reduced.

To the correlation technique among the above-mentioned, utility model people think that the raw materials that traditional on-line copper wire and copper were cooked are more expensive, and processing technology is complicated, has the higher defect of manufacturing cost.

SUMMERY OF THE UTILITY MODEL

In order to reduce the cost of wire rod under the prerequisite that does not influence high frequency signal transmission quality, this application provides a high frequency signal line.

A high-frequency signal wire comprises a core wire, a hot-melt metal foil and a metal wrapping tape which are sequentially arranged from inside to outside, wherein the metal wrapping tape comprises an adhesive layer arranged on the inner side; the hot-melt metal foil is used for cladding the core wire in a direct wrapping mode, and a plurality of radial sections of the hot-melt metal foil along the extension direction of the core wire are consistent.

By adopting the technical scheme, the signal wire transmits signals from inside to outside through the core wire, and the core wire is coated by the hot-melt metal foil and the metal wrapping tape and serves as a shielding layer, so that the wire has stable and balanced capacitance and shields the signals; the distance from the center of the core wire to the hot-melt metal foil is consistent, the cross section of the hot-melt metal foil is consistent, and the hot-melt metal foil can completely cover the insulated core wire on the premise of not damaging the smoothness of metal materials on the surface of the hot-melt metal foil, so that the attenuation resonance generated in the process of high-frequency signal transmission is avoided, the continuity and the stability of the signal transmission are ensured, and the performance can reach the level of the traditional coaxial wire; compared with the traditional coaxial wire, the cost of the single wire is greatly reduced by hot melting the metal foil and the metal wrapping tape, and the cost performance and the economic benefit are higher; meanwhile, when production and processing are carried out, only the steps of laser and CO2 stripping are needed, the processing procedures are directly reduced, a production line is directly saved during mass production, the processing is convenient, and the production efficiency of finished product assembly is improved.

Optionally, the hot melt metal foil includes cover portion and overlap portion that integrative set up, the cover portion cladding is in the heart yearn, overlap portion and cover portion one end overlap just the laminating of overlap portion is in the cover portion outside.

Through adopting above-mentioned technical scheme, cover portion is used for the cladding heart yearn, and the integrality of cover portion parcel is guaranteed to the overlap portion, can't wrap the heart yearn when avoiding appearing hot melt metal foil narrow excessively, and causes the discontinuous situation of signal transmission to guarantee the shielding effect of signal.

Optionally, the overlapping portion overlaps less than (less than) one quarter of the outer perimeter of the covering portion.

By adopting the technical scheme, the size of the overlapping part needs to be limited to a certain degree, the situations of folds and uneven surfaces when the hot-melt metal foil is too wide are avoided, the stability of the wire capacitor is ensured, and resonance is reduced.

Optionally, an end surface of the covering portion corresponding to the overlapping portion is an inclined surface, and at least a part of the overlapping portion is covered and attached to the inclined surface.

Through adopting above-mentioned technical scheme, cover along the inclined plane and cover in the cover outside for overlap portion laminates in the cover outside with comparatively mild angle, reduces overlap portion and cover intersection and the space of heart yearn, and the inseparability of cover and heart yearn laminating of being convenient for improves the impedance.

Optionally, the hot-melt metal foil includes a metal layer, an adhesive layer and a mylar layer, the adhesive layer adheres the metal layer and the mylar layer, and the mylar layer is located between the metal layer and the core wire and covers the core wire; the metal wrapping tape is wrapped outside the metal layer in a spiral winding mode.

Through adopting above-mentioned technical scheme, the hot melt metal forming package shields high frequency signal through the metal level and the mylar layer of two-layer adhesion, twines in the metal level mountain through the metal band, shields the high frequency signal of heart yearn conveying with the hot melt metal forming cooperation, and shielding performance is better, and is better to the fixed effect of heart yearn.

Optionally, the wheat pulling belt is arranged between the hot-melt metal foil and the metal wrapping belt, the wheat pulling belt wraps the hot-melt metal foil and is arranged on the hot-melt metal foil in a spiral winding mode, and the metal wrapping belt is adhered to the wheat pulling belt in a spiral winding mode.

Through adopting above-mentioned technical scheme, mylar coil of strip is wrapped on hot melt metal forming, has certain fixed effect to hot melt metal forming on the one hand, guarantees hot melt metal forming and directly wraps the shielding effect to the heart yearn, and on the other hand can make the wire rod just have stable structure, has good bending resistance nature, and then guarantees the quality of wire rod.

Optionally, the core wire includes an insulating layer and at least one conductor, the insulating layer covers the outer side of the conductor, and the conductor is a metal wire.

Through adopting above-mentioned technical scheme, set up the insulating layer and can wrap up in order to play the guard action to the conductor, carry out the transmission of signal through the conductor, metal wire transmission effect is better, reduces the loss of signal.

Optionally, the number of the conductors is two or more, the number of the conductors is a double number, and the conductors are twisted with each other.

Through adopting above-mentioned technical scheme, the conductor transposition sets up, can optimize the sinle silk combination, and the atress is equal, the structure is round, changes the capacitance distribution, offsets the magnetic field that produces.

Optionally, the core wire is provided with two groups of core wires and a filling layer, the filling layer wraps the two groups of core wires, and the filling layer is arranged between the two groups of core wires and the hot-melt metal foil.

Through adopting above-mentioned technical scheme, the filling layer that sets up can fix a position it to two sets of heart yearns, guarantees the relative position of two sets of heart yearns, improves the wholeness, and then makes the signal of transmission more stable, is another kind of transmission mode of signal.

In summary, the present application includes at least one of the following beneficial technical effects:

1. excellent high frequency performance; the package of wrapping through direct package of hot melt metal foil, metal band and wheat stretching strap in the example of this application for the signal line has stable structure, has good bending resistance, makes the signal line have stable characteristic impedance and minimum internal delay difference simultaneously, and the wire rod loss is very little, reduces because the situation of signal discontinuity production resonance, has splendid shielding effect, provides certain assurance for the complete signal of wire rod transmission.

2. The cost is low; traditional coaxial wire structure is conductor, insulation, copper wire are woven or twined, copper is cooked, colored wheat stretching strap in proper order from inside to outside, uses hot melt metal foil and metal belting to replace two kinds of high-cost materials of copper shielding and copper cooking in the example of this application, solves coaxial wire defect with high costs, greatly reduced the cost under the prerequisite of the performance of guaranteeing coaxial signal line.

3. Easy processability; when a connector manufacturer processes a coaxial line, a colored mylar tape is cut off by laser, then the mylar tape is turned outwards and wound, a copper foil is wrapped, and finally insulation is cut off by laser; the signal line in the application only needs to be radiussed to remove the metal foil and then peel off the insulation, and then the welding common ground wire can, a production line can be directly saved, and the production efficiency and the production cost of finished product assembly are improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a high-frequency signal line according to embodiment 1 of the present application.

Fig. 2 is a schematic view of a hot-melt metal foil direct pack of example 2 of the present application.

Fig. 3 is a cross-sectional view of a hot-melt metal foil in example 1 of the present application in a radial direction of a wire.

Fig. 4 is a stacked pattern of the hot-melt metal foil of embodiment 1 of the present application.

Fig. 5 is a schematic structural diagram of embodiment 3 of the present application.

Description of reference numerals: 1. a core wire; 11. a conductor; 12. an insulating layer; 13. a sub-core wire; 14. a filling layer; 2. hot-melt metal foil; 21. a hot melt adhesive layer; 22. a Mylar layer; 23. an adhesive layer; 24. a metal layer; 2A, a covering part; 2B, an overlapping part; 3. a wheat pulling belt; 31. a viscose wrapping layer; 32. mylar tape layer; 4. a metal wrapping tape; 41. an adhesive layer; 42. a metal belting layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a high-frequency signal line.

Example 1:

referring to fig. 1, the high-frequency signal line includes a core wire 1, a hot-melt metal foil 2, a mylar tape 3, and a metal tape 4, which are sequentially disposed from inside to outside, the hot-melt metal foil 2 covers the core wire 1 in a straight-wrapping manner, and a plurality of radial cross sections of the hot-melt metal foil 2 along an extending direction of the core wire 1 are uniform, and the form of the hot-melt metal foil 2 may refer to the form of the hot-melt metal foil 2 of another embodiment of fig. 2. The wheat pulling belt 3 and the metal wrapping belt 4 are sequentially and spirally wound on the hot-melt metal foil 2.

Referring to fig. 2, the hot-melt metal foil 2 has a uniform profile in a plurality of radial cross sections along the extending direction of the core wire 1, which means that the profiles of the hot-melt metal foil 2 in the vertical cross sections of the wire at different horizontal length positions are substantially the same after the difference in work is eliminated. If, for example, the hot-melt metal foil 2 is a spiral 32402wound around the core 1, the seal of each cross-section thereof must be located at a different position, i.e., non-uniform. On the contrary, when the straight bag is adopted, the sealing positions of all the sections are substantially the same, so that the sealing positions are consistent. When the sections are consistent, the impedance variation generated by each section is less, and the signal quality is effectively improved.

Referring to fig. 1, a core wire 1 includes an insulating layer 12 and at least one conductor 11, and the conductor 11 is provided as 1 in the present embodiment; the conductor 11 is provided as a metal wire, and the conductor 11 is more specifically silver-plated copper. The insulating layer 12 is made of FEP (teflon) to wrap the conductor 11. The insulating layer 12 cladding is in the conductor 11 outside, can protect conductor 11 more effectively, and thermal-insulated heat-proof enlarges the practical environment of signal line, improves the life of signal line.

Referring to fig. 3 and 4, the hot-melt metal foil 2 is a hot-melt aluminum foil, which includes a hot-melt adhesive layer 21, and the hot-melt adhesive layer is adhered by heat energy generated by coating and extruding wires, so as to ensure good hot-melt adhesion effect at a lower preheating temperature, maintain long-term stability, have good reinforcement fastness, excellent sealing performance, simple rear-end processing, and facilitate interference shielding of the multi-conductor control wires.

Referring to fig. 3 and 4, the hot-melt metal foil 2 includes a metal layer 24, an adhesive layer 23, a mylar layer 22, and a hot-melt adhesive layer 21, from the outside to the inside in the radial direction of the signal line. The adhesive layer 23 is adhered to the metal layer 24 and the mylar layer 22, the metal layer 24 is made of aluminum foil, and the hot melt adhesive layer 21 can be adhered to an object at a certain temperature. The hot melt adhesive layer 21 is adhered to the mylar layer 22, i.e., the mylar layer 22 is positioned between the metal layer 24 and the insulating layer 12, and the hot melt adhesive layer 21 adheres to the insulating layer 12 and the mylar layer 22 and covers the insulating layer 12.

In another embodiment of the hot-melt metal foil 2, the hot-melt adhesive layer 21 is adhered to the metal layer 24, i.e., the metal layer 24 is located between the mylar layer 22 and the insulating layer 12, and the hot-melt adhesive layer 21 adheres to the insulating layer 12 and the metal layer 24 and covers the insulating layer 12. However, the design of the hot-melt metal foil 2 is not limited to the foregoing example, and other structures capable of achieving the core wire wrapping and shielding effects similar to those of the hot-melt metal foil 2 may be applied instead of the foregoing design if necessary.

Referring to fig. 2 and 3, the hot-melt metal foil 2 is completely wrapped on the core wire 1 in a straight wrapping manner by adopting a straight low-tension wrapping tape technology, so that the smoothness of the metal material on the surface of the hot-melt metal foil 2 is not damaged, and the metal foil can be completely covered on the insulated core wire. The hot-melt metal foil 2 comprises a covering part 2A and an overlapping part 2B which are integrally arranged along the circumferential direction of the signal wire after the core wire 1 is wrapped on the hot-melt metal foil, the covering part 2A wraps the core wire 1, the overlapping part 2B is overlapped with one end of the covering part 2A, and the overlapping part 2B is attached to the outer side of the covering part 2A; and the overlapping portion of the overlapping portion 2B and the covering portion 2A is less than (not including a substantial number of) one fourth of the peripheral circumference of the covering portion 2A, that is, less than 25 percent thereof. The reason is that, if the overlapping ratio of the overlapping portion 2B and the covering portion 2A exceeds twenty-five percent due to the limited process, the probability of generating creases is exponentially increased, which causes impedance unevenness, affects the signal quality of the wire rod, and the tolerance cannot be controlled. That is, as long as the overlapping ratio is less than 25 percent, the effect of both shielding and preventing creases is gradually increased as the overlapping ratio increases, and the overlapping ratio is preferably more than 10, 15 or 20 percent and less than 25 percent.

In addition, referring to fig. 3 and 4, an end surface of the covering portion 2A corresponding to the overlapping portion 2B is a slope on which the covering of the overlapping portion 2B is attached, so that the overlapping portion 2B is more attached to the core wire at the overlapping portion with the covering portion 2A. The provision of the inclined surface effectively improves the joining of the covering portion 2A to the overlapping portion 2B, further improving the cable resistance.

Referring to fig. 1, the mylar tape 3 includes a mylar tape layer 32 and a glue tape layer 31 adhered to one side of the mylar tape layer 32, and the mylar tape 3 wraps the hot-melt metal foil 2, is spirally wound on the hot-melt metal foil 2, and is adhered and fixed to the outside of the hot-melt metal foil 2 by the glue tape layer 31.

Referring to fig. 1, the metal wrapping tape 4 includes a metal wrapping tape layer 42 and a glue layer 41 adhered to one side of the metal wrapping tape layer 42, the metal wrapping tape 4 wraps the mylar tape 3 and is adhered to the mylar tape 3 in a spiral winding manner, and the glue layer 41 is adhered and fixed to the mylar tape layer 32 toward the inside.

The implementation principle of the high-frequency signal line in the embodiment of the application is as follows: this application is directly wrapped through hot melt metal forming 2, wheat is drawn area 3 and metal belting 4 and is wrapped the package in proper order, in order to reach the performance with the same level of traditional coaxial signal line, replace the higher copper shielding of cost and copper cooking in the traditional coaxial wire rod simultaneously, very big reduction the cost, the price/performance ratio of this kind of wire rod has been improved, market cost competitiveness has been improved, cater to the demand to characteristic and cost, and through the form around the package, make the wire rod have stable structure and good bending resistance, the service life of wire rod is improved.

Example 2:

referring to fig. 2, the embodiment of the present application differs from embodiment 1 in that: the number of the conductors 11 may be selectively set to two or more, and the number of the conductors 11 is set to be a double number and twisted with each other. Following the design of embodiment 1, in the embodiment of the present application, the number of the conductors 11 is two, and the two conductors 11 are twisted with each other and wrapped in the insulating layer 12.

Example 3:

referring to fig. 5, the difference between the embodiment of the present application and embodiment 1 is that the core wire 1 is provided with two sets of sub-core wires 13 and a filling layer 14, the structure of the sub-core wires 13 is the same as that of the core wire 1 of embodiment 1, the filling layer 14 and the insulating layer 12 are made of the same material and wrap the two sets of sub-core wires 13, and the hot-melt metal foil 2 is wrapped and adhered and fixed outside the filling layer 14.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. A high-frequency signal line characterized by: the hot-melt adhesive tape comprises a core wire (1), a hot-melt metal foil (2) and a metal tape (4) which are sequentially arranged from inside to outside, wherein the metal tape (4) comprises an adhesive layer (41) arranged on the inner side; the hot-melt metal foil (2) wraps the core wire (1) in a direct wrapping mode, and a plurality of radial sections of the hot-melt metal foil (2) along the extension direction of the core wire (1) are consistent.

2. The high-frequency signal line according to claim 1, characterized in that: hot melt metal foil (2) are including cover portion (2A) and overlap portion (2B) of integrative setting, cover portion (2A) cladding is in heart yearn (1), overlap portion (2B) and cover portion (2A) one end overlap just overlap portion (2B) laminating is in cover portion (2A) outside.

3. The high-frequency signal line according to claim 2, characterized in that: the overlapping portion (2B) overlaps less than one fourth of the outer circumference of the covering portion (2A).

4. The high-frequency signal line according to claim 2, characterized in that: an end face of the covering part (2A) corresponding to the overlapping part (2B) is an inclined plane, and at least one part of the overlapping part (2B) is covered and attached on the inclined plane.

5. The high-frequency signal line according to claim 1, characterized in that: the hot-melt metal foil (2) comprises a metal layer (24), an adhesive layer (23) and a mylar layer (22), the adhesive layer (23) is used for bonding the metal layer (24) and the mylar layer (22), and the mylar layer (22) is positioned between the metal layer (24) and the core wire (1) and covers the core wire (1); the metal wrapping tape (4) is wrapped outside the metal layer (24) in a spiral winding mode.

6. The high-frequency signal line according to claim 1, characterized in that: still include wheat stretching strap (3), wheat stretching strap (3) set up between hot melt metal forming (2) and metal belting (4), just wheat stretching strap parcel hot melt metal forming (2) to establish with spiral winding mode on hot melt metal forming (2), metal belting (4) are pasted with spiral winding mode on the wheat stretching strap (3).

7. The high-frequency signal line according to claim 1, characterized in that: the core wire (1) comprises an insulating layer (12) and at least one conductor (11), wherein the insulating layer (12) is coated on the outer side of the conductor (11), and the conductor (11) is a metal wire.

8. The high-frequency signal line according to claim 7, characterized in that: the number of the conductors (11) is two or more, the number of the conductors (11) is even, and the conductors (11) are twisted with each other.

9. The high-frequency signal line according to claim 1, characterized in that: the core wire (1) is provided with two groups of core wires (13) and a filling layer (14), the filling layer wraps the two groups of core wires (13), and the filling layer (14) is arranged between the two groups of core wires (13) and the hot-melt metal foil (2).

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