CN114724747A - Vibration-damping noise-reducing audio cable - Google Patents
Vibration-damping noise-reducing audio cable Download PDFInfo
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- CN114724747A CN114724747A CN202210063701.4A CN202210063701A CN114724747A CN 114724747 A CN114724747 A CN 114724747A CN 202210063701 A CN202210063701 A CN 202210063701A CN 114724747 A CN114724747 A CN 114724747A
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- damping
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- strand wires
- vibration
- damping material
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- 238000013016 damping Methods 0.000 title claims abstract description 96
- 239000000463 material Substances 0.000 claims description 69
- 229920000742 Cotton Polymers 0.000 claims description 35
- 239000004744 fabric Substances 0.000 claims description 20
- 238000005253 cladding Methods 0.000 claims description 2
- 230000005236 sound signal Effects 0.000 abstract description 7
- 230000008054 signal transmission Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 6
- -1 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/08—Several wires or the like stranded in the form of a rope
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/189—Radial force absorbing layers providing a cushioning effect
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- Communication Cables (AREA)
Abstract
A vibration-damping noise-reducing audio cable belongs to an improved design of an audio electrical signal transmission cable or a power supply cable, and can improve the damping vibration-damping characteristic of the cable so as to improve the signal-to-noise ratio of a transmission signal of the audio signal cable.
Description
Technical Field
The improved design of the audio signal transmission line can improve the damping vibration attenuation characteristic of the cable, and further improve the signal to noise ratio of the audio signal cable transmission signal.
Background
The requirement of the current audio field for signal transmission lines is relatively high, and a structure of a plurality of strands of shielding lines is common, as shown in fig. 1. It can be seen that the cotton rope 1 for filling the gaps is arranged in parallel on the multiple strands, the cotton rope has the functions of increasing the tensile strength of the strands, absorbing the vibration of the conducting wire and reducing vibration and noise, but the contact area between the cotton rope and the multiple strands is small, and the function is limited. The coupling between the ground wire and the live wire is increased by adopting a braided wire mode, as shown in a mode of figure 2, better high-low frequency balance performance can be obtained, and the vibration of the weak wire can be reduced by the braided fixation between the wires. CN 215342053U shows a design of a shock absorbing cable, which is aimed at external incoming shock, and the buffer layer 7 is not in contact with the conducting wire 2, and cannot provide damping for the conducting wire. However, the general PVC and rubber materials have poor damping performance and cannot provide enough damping to achieve good shock absorption.
When the audio signal is transmitted through the audio signal line, the pulse signal generates electromagnetic force to drive the conducting wire to vibrate, the vibration can also mutually and reversely influence the electric signal transmitted by the cable, the vibrating cable can be added with an electric noise signal generated by vibration, and the signal-to-noise ratio is influenced and reduced.
Disclosure of Invention
Through the research to prior art, the sandwich layer damping signal transmission line design of the braided wire of a strong damping is proposed to fine practical effect has been obtained. As shown in fig. 3, a pure cotton rope 1 is arranged in the center of a tubular braided stranded wire 2, more than one layer of sponge or similar strong damping material 3 is arranged outside the braided stranded wire 2 (comprising a conductor and an insulating layer outside the conductor), and the damping material 3 can be wound outside the stranded wire 2 or directly foamed and formed on the outer side surface of the stranded wire by the processes of brushing, dipping, spraying, extrusion molding and the like. More than one layer of electric cloth adhesive tape 4 is wound outside the damping material 3 on the outer side of the damping material 3, certain pressure is applied to enable the damping material 3 to be tightly wrapped on the stranded wires 2 and enable the damping material 3 to be squeezed into gaps among the leads of the stranded wires 2, the damping effect on the stranded wires 2 is improved, and the pressure of the stranded wires on the cotton rope 1 of the inner core is also kept. The outer side of the electrical cloth rubberized fabric 4 is provided with a nylon mesh sleeve 5 which can replace the conventional extruded or wrapped protective outer wall made of PVC, polytetrafluoroethylene and other rubber and plastic materials. The braided strands 2 can also be arranged or twisted into a cylinder parallel to the outside of the cotton rope 1, each strand being effectively damped by the cotton rope uniformly.
When the signal transmission line transmits a pulse signal, certain vibration can be generated due to factors such as electromagnetic force, which can be obviously observed in our production practice: when the loudspeaker is produced, a magnetic circuit system needs to be magnetized, pulse current is large when pulse magnetization is carried out, and the power supply cable output to the magnetizing head by the magnetizing machine can generate very large vibration and even can send out very loud whip.
The vibration can reciprocally and reversely affect the electric signals transmitted by the cable, and the vibrating cable can be added with an electric noise signal generated by vibration. Thus, vibration damping of audio signal wires or cables has always been of interest.
The design is a sandwich interlayer damping design which emphasizes the action of the damping material: as shown in fig. 3, firstly, the multi-strand wires 2 are pressed on the outer side of the cotton rope 1 of the inner core, the multi-strand wires are embedded in the outer surface of the cotton rope 1 (after the cotton rope is pressed, part of the cotton rope 1 enters gaps among wires of the multi-strand wires 2), the contact area between the cotton rope 1 and the multi-strand wires 2 is increased, and the vibration of the multi-strand wires 2 is inhibited by larger damping of the cotton rope 1. Secondly, the sponge type strong damping material 3 is tightly wrapped on the outer side of the stranded wire 2, the soft damping material 3 is embedded into a gap between the outer side of the stranded wire and a lead under the winding pressure of the electrical fabric rubberized fabric 4, the contact area between the damping material 3 and the stranded wire 2 is increased, the damping inhibition on the stranded wire 2 during vibration is also increased, the vibration is reduced by damping, the generated vibration noise is small, and the signal-to-noise ratio of a signal transmission line for transmitting signals is improved.
The electrical cloth rubberized fabric 4 is wound on the outer surface of the damping material 3 and has two functions: firstly, the soft damping material is protected and is prevented from being damaged by the subsequent process. Secondly, certain pressure is applied to the damping material 3 and the stranded wires 2, so that the inner and outer damping materials are partially extruded or embedded into gaps between the leads of the stranded wires 2, the contact area between the damping material and the stranded wires 2 is enlarged, and the damping effect is improved.
The actual solution of the multi-strand wires 2 may be a braid woven on the outside of the cotton rope 1 as shown in fig. 2, or the cotton rope 1 penetrates the center of the woven multi-strand wires 2 as shown in fig. 2. The multiple strands 2 may be twisted or arranged outside the cotton rope 1 according to a certain arrangement mode (one fire and one ground or two fires and two grounds, etc.), and are cylindrically enclosed outside the cotton rope 1.
The cotton rope 1 at the inner side can be replaced by other flexible damping materials such as a sponge strip, a foamed rubber strip, a foamed silica gel strip and the like. The damping material 3 can be a sponge in a winding mode, and can also be a damping material such as a sponge material directly extruded and coated outside a plurality of strands. Other processes such as brushing, dipping, spraying, etc. can also be used to directly foam the outer side of the stranded wires 2. The electrical fabric tape 4 may be replaced by a similar tape material: the tape 4 such as a tape, a rubber tape, etc. may have two functions of protecting the damping material and increasing the contact efficiency of the damping material with the wire.
The core of the design is sandwich interlayer damping: the cylindrical stranded wires are tightly wrapped and embedded with damping materials inside and outside, the contact area between the damping materials and the stranded wires is large, and two different damping materials are adopted inside and outside. In general, the wire of the design does not comprise the material of the outer wall and/or the shielding metal net and/or the aluminum foil added according to the requirement, and the inner structure is a concentric four-layer structure: the cotton rope comprises an inner cotton rope 1, a stranded wire 2 surrounding the cotton rope, a damping material sponge 3 wrapping the stranded wire, and a winding adhesive tape or a belt 4 protecting the damping material and applying pressure to ensure that the damping material and the cotton rope are in close contact with the wires and are embedded into gaps among the wires. The damping device is characterized in that damping materials 3 are embedded in gaps between the outer sides of the stranded wires, cotton ropes 1 are embedded in gaps between the inner sides of the stranded wires, and the damping effect of the damping materials 3 and the cotton ropes 1 on the stranded wires 2 is remarkably improved due to the fact that the contact area is enlarged. And the matching of the damping characteristics of the inner and outer two different damping materials can play a better damping effect on high, medium and low frequency vibration.
Simultaneously, this design also can be used for on the belt multistrand line simply, and the upper and lower two faces of the belt multistrand line of weaving or transposition all cover damping material 1 and 3, and the outside twines tape 4 such as electrician's cloth adhesive tape or strap or polytetrafluoroethylene area, plays the protection and applies the pressure effect: the damping effect is improved by protecting the damping material and increasing the contact between the damping material and the lead.
Drawings
Fig. 1 is a pictorial illustration of a conventional cable showing a cotton rope 1 parallel to the multi-stranded wires and having a shielding metal mesh and a wrapped aluminum foil on the inside of the outer layer of the cable.
Fig. 2 is a photograph showing a conventional braided multi-strand cable, in which two-color wires are braided in a certain arrangement to form a cylindrical shape.
Figure 3 is a cross-sectional schematic of a sandwich damped signal transmission cable of the present design. 1 is the innermost cotton string. The cotton rope 2 is a multi-strand yarn 2 which is woven or twisted and arranged on the outer side of the cotton rope 1 and is wrapped on the outer surface of the cotton rope 1 in a cylindrical shape, and part of the cotton rope 1 is squeezed into or embedded into gaps among wires of the multi-strand yarn. The sponge damping material 3 is arranged outside the stranded wires 2 and is wrapped on the outer edge cylindrical surfaces of the stranded wires 2 in a winding mode, and part of the damping material 3 is extruded into gaps among the stranded wires. The outer layer of the damping material 3 is sequentially wound with an electrical cloth rubberized fabric 4 and a cable outer layer protective layer nylon sleeve 5.
Fig. 4 is a schematic view of a tape-shaped multi-strand wire, which is covered with damping materials 2 and 3 on the upper and lower sides of a tape-shaped multi-strand wire 2 (including a wire and/or an insulating layer of a wire), and an electrical cloth tape or a cloth tape is wound on the outer side of the damping material.
Detailed Description
Examples a basic embodiment is given in connection with fig. 3, conventional techniques of cables and common damping materials etc. can be obviously incorporated into the present design, and this example is only given as a most basic feasible solution and does not constitute any limitation to the scope of protection of the present application.
The inner core of the braided or twisted cylindrical stranded wire 2 is a cotton rope 1, the damping material sponge 3 is arranged on the outer side of the stranded wire, and the electrical cloth adhesive tape 4 is wound on the outer side of the damping sponge 3, so that the sponge damping material 3 can be protected, and pressure is applied to the inner core simultaneously, so that the damping material sponge 3 and the cotton rope 1 are extruded to be embedded into gaps between wires of the stranded wire 2, the contact area is increased, and the damping effect is improved. The outermost layer is a nylon braided sleeve 5 of the cable sheath, and can replace the conventional process and material of the conventional cable: such as the outer layer of a polytetrafluoroethylene belt in a wrapping process, the outer skin of PVC, polytetrafluoroethylene and rubber in an extrusion process, or the outer skin of rubber and plastic materials in a plastic spraying and plastic dipping process. And a shielding layer, such as a copper wire mesh, an aluminum foil wrapping and the like, can also be added on the inner side of the sleeve 5 according to requirements.
When the designed vibration-damping cable is used for transmitting signals, transient electric signals can enable the wires of the stranded wires to have tiny vibration, the two damping materials are tightly wrapped and embedded into the inner surface and the outer surface of the stranded wires and gaps, any vibration can be well damped and absorbed, and vibration is reduced. The vibrations would in turn cause noise to couple into the cable, reducing the signal-to-noise ratio. Reducing the vibration reduces the noise and improves the signal-to-noise ratio. The actually manufactured audio signal line has good use effect, low background noise, quiet background and more details of music.
The core of the design is a sandwich type interlayer embedded damping design, damping materials are embedded into two sides of the stranded wires in a tight fit mode, vibration of the stranded wires is effectively damped, any micro vibration of high, medium and low frequencies of the stranded wires is effectively damped due to the different damping characteristics of the two different damping materials, and the signal to noise ratio of transmission signals of the cable is effectively improved.
This design also can be used for the flat line design, like figure 4 illustrates, the stranded wire is arranged or is woven into one row, is the plane of thin area, laminates damping material from top to bottom, and the outer package electrician's cloth rubberized fabric for damping material cladding and extrusion embedding stranded wire space between.
As the degradation design, this design also can not twine electrician's cloth adhesive tape, directly at outer layer extrusion molding one deck rubber and plastic material crust, or around package one deck or two-layer polytetrafluoroethylene area etc.. As a degradation design, only one layer of damping material can be used, a sandwich type three-layer structure (two layers of damping materials sandwich the stranded wire) is changed into a layer of damping material on the inner side or the outer side of the stranded wire, and the electrical cloth adhesive tape is wound to apply pressure, so that the damping material is ensured to be embedded into all gaps of the stranded wire.
The design can simply add a shielding layer, as shown in fig. 1, and a metal woven mesh and/or aluminum foil winding is added on the inner side of the protective sleeve or the outer skin on the outermost layer to strengthen the shielding.
Claims (6)
1. The utility model provides a vibration damping noise reduction audio cable, is including being the stranded wire of tube-shape and more than one deck damping material, its characterized in that, damping material twines the cladding on the outside cylinder face of tube-shape stranded wire, the vibration of damping stranded wire.
2. The vibration-damping noise-reducing audio cable according to claim 1, wherein the multi-strand wires are woven into a cylindrical shape, the outer sides of the multi-strand wires are wrapped with a damping material sponge and tightly attached to the outer surfaces of the multi-strand wires, and the damping material is wrapped with an electrical fabric and applied with pressure, so that the damping material is squeezed into gaps between the wires of the multi-strand wires.
3. The vibration-damping noise-reducing audio cable according to claim 1, wherein the multi-strand wires are woven or twisted into a cylindrical shape, and the inner side of the cylindrical shape is a gap between the wires in which the cotton rope is tightly attached to the inner surface of the multi-strand wires and embedded in the multi-strand wires.
4. The vibration-damping noise-reducing audio cable according to claim 1, wherein the multi-strand wires are woven or twisted into a cylindrical shape, the inner side of the cylindrical shape is a gap between the wires in which the cotton rope is tightly attached to the inner surface of the multi-strand wires and embedded in the multi-strand wires, and the outer side of the cylindrical shape is a gap between the wires in which the damping material sponge is wrapped and tightly attached to the outer surface of the multi-strand wires and embedded in the multi-strand wires.
5. The vibration-damping noise-reducing audio cable according to claim 1, wherein the multi-strand wires are woven or twisted in a cylindrical shape, the inner side of the cylindrical shape is a gap between the wires in which the cotton rope is tightly attached to the inner surface of the multi-strand wires and embedded in the multi-strand wires, the outer side of the cylindrical shape is a gap between the wires in which the damping material sponge is wrapped and tightly attached to the outer surface of the multi-strand wires and embedded in the multi-strand wires, the outer side of the damping material sponge is wrapped with a tape wrapped with an electrical fabric or other materials, and pressure is applied to ensure that the inner and outer damping materials are tightly contacted with the multi-strand wires and embedded in the gap between the wires of the multi-strand wires.
6. The vibration-damping noise-reducing audio cable according to claim 1, wherein the multiple strands are woven or twisted into a thin strip, and the upper and lower surfaces of the thin strip are covered with two different damping materials and are tightly attached to and embedded in the upper and lower surfaces of the multiple strands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210063701.4A CN114724747A (en) | 2022-01-20 | 2022-01-20 | Vibration-damping noise-reducing audio cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210063701.4A CN114724747A (en) | 2022-01-20 | 2022-01-20 | Vibration-damping noise-reducing audio cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114724747A true CN114724747A (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210063701.4A Pending CN114724747A (en) | 2022-01-20 | 2022-01-20 | Vibration-damping noise-reducing audio cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114724747A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011078865A1 (en) * | 2009-12-23 | 2011-06-30 | Paul Cinquemani | Flexible electrical cable with resistance to external chemical agents |
| CN210743629U (en) * | 2019-09-18 | 2020-06-12 | 蚌埠市力业传感器有限公司 | Signal transmission cable for sensor |
| CN214099194U (en) * | 2020-12-30 | 2021-08-31 | 无锡市华美电缆有限公司 | Flexible shielded cable |
-
2022
- 2022-01-20 CN CN202210063701.4A patent/CN114724747A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011078865A1 (en) * | 2009-12-23 | 2011-06-30 | Paul Cinquemani | Flexible electrical cable with resistance to external chemical agents |
| CN210743629U (en) * | 2019-09-18 | 2020-06-12 | 蚌埠市力业传感器有限公司 | Signal transmission cable for sensor |
| CN214099194U (en) * | 2020-12-30 | 2021-08-31 | 无锡市华美电缆有限公司 | Flexible shielded cable |
Non-Patent Citations (1)
| Title |
|---|
| 张沛商等: "《物理性污染控制》", 北京经济学院出版社, pages: 248 - 98 * |
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Application publication date: 20220708 |