CN111128444A - Cable for a hand-held power tool - Google Patents
Cable for a hand-held power tool Download PDFInfo
- Publication number
- CN111128444A CN111128444A CN201911050439.4A CN201911050439A CN111128444A CN 111128444 A CN111128444 A CN 111128444A CN 201911050439 A CN201911050439 A CN 201911050439A CN 111128444 A CN111128444 A CN 111128444A
- Authority
- CN
- China
- Prior art keywords
- cable
- hand
- power tool
- graphene
- held power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 30
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 22
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 22
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 239000004753 textile Substances 0.000 claims abstract description 3
- 238000005755 formation reaction Methods 0.000 claims abstract 2
- 238000002360 preparation method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
Images
Classifications
-
- 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
- H01B7/0009—Details relating to the conductive cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
-
- 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
- H01B5/12—Braided wires or the like
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
-
- 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
- H01B7/08—Flat or ribbon cables
- H01B7/0861—Flat or ribbon cables comprising one or more screens
-
- 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
- H01B7/08—Flat or ribbon cables
- H01B7/0823—Parallel wires, incorporated in a flat insulating profile
-
- 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
- H01B7/08—Flat or ribbon cables
- H01B7/0869—Flat or ribbon cables comprising one or more armouring, tensile- or compression-resistant elements
-
- 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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/04—Concentric cables
Abstract
The invention relates to a cable for a hand-held power tool, comprising at least one conductor element and at least one insulating element, wherein the insulating element radially surrounds the conductor element. The invention proposes that the conductor elements are configured as fibers, yarns, strands, ribbons or other textile formations, which are substantially completely composed of carbon nanotubes or graphene.
Description
Technical Field
The invention relates to a cable for a hand-held power tool.
Background
Hand-held power tools are known which can be connected to an energy source via a power supply line. Such cables typically have expensive copper conductors and are very long and therefore difficult to construct. This results in disadvantages during transport and also during operation with hand-held power tools. Furthermore, the cable is easily damaged.
Disclosure of Invention
The invention relates to a cable for a hand-held power tool, comprising at least one conductor element and at least one insulating element, wherein the insulating element radially surrounds the conductor element. The invention proposes that the line element is designed as a fiber, yarn, rope, tape or other textile formation, which is essentially completely composed of carbon nanotubes or graphene. Thereby, a particularly light and strong cable can be advantageously achieved. In addition, particularly flexible cables can be advantageously realized thereby.
The cable is in particular designed for transmitting energy and/or information. The insulating element is preferably made of plastic.
The carbon nanotube fiber or carbon nanotube ribbon is composed of a plurality of carbon nanotubes, which can be manufactured by means known to those skilled in the art. Manufacturing processes are disclosed, for example, in WO 2007/015710, US 8,999,285 and WO 2013/034672. The carbon nanotubes may be oriented after they are produced. The carbon nanotubes are oriented in particular such that they extend in a common direction, which preferably extends parallel to the longitudinal extension of the cable. Additionally, it is possible to consider: the individual carbon nanotubes extend substantially parallel to each other. After the carbon nanotubes are produced, they can be further processed into fibers or ribbons, for example by wet spinning or made from carbon nanotube aerogels.
In the context of the present application, "graphene" is understood to be at least one layer of carbon atoms, which is present in an sp-2 morphology within the layer. In the context of the present application, graphene can have a plurality of layers on top of one another, wherein graphene differs from graphite in its physical properties, in particular electrical and mechanical properties. Graphene may have impurity atoms between its layers, for example to alter its electrical and mechanical properties or to be optimized for use in a cable. Furthermore, it is conceivable that the impurity atoms are molecularly combined with graphene or carbon nanotubes. For example, graphene may be combined with oxygen atoms, and thus exist at least partially as graphene oxide.
The production of graphene can be carried out directly, for example by chemical vapor deposition or by graphene oxide or carbon nanotubes as starting materials, as explained, for example, in US 8,999,212 or CN 105603581. Alternatively, the graphene may be obtained from graphite. This can produce graphene oxide by wet chemical or electrochemical oxidation. The graphene oxide is reduced again to graphene in one stage of manufacture. Or decomposing graphite into graphene by mechanical or electrolytic decomposition. In order to optimize the conductivity of the graphene or to repair defects in the graphene, the graphene is heated at the end of the manufacturing process, preferably at a temperature of more than 2000 ℃, particularly preferably more than 3000 ℃.
"substantially entirely composed of carbon nanotubes or graphene" is to be understood in the context of the present application to mean, in particular, that the line element is composed at least 80%, preferably at least 90%, preferably at least 98%, of carbon nanotubes or graphene.
It is furthermore proposed that the at least one line element has a substantially circular cross section. Here, a circular cross section is also to be understood to mean, in particular, a substantially slightly circular or oval cross section. Thereby, a compact cable can be advantageously achieved.
It is further proposed that the at least one line element has a substantially circular cross section. The line element here has, in particular, a slightly round, round or oval outer contour. Thereby, advantageously, the wire element may be flexibly arranged, e.g. around another wire element.
It is furthermore proposed that the at least one line element has a substantially rectangular cross section. In particular, the line element has a greater width in cross section than the height of the line element. Preferably, the line element is configured in cross section to be at least twice, preferably at least three times as wide as the height.
It is furthermore proposed that the cable has at least two conductor elements, which are insulated relative to one another by at least one insulating element. It is also conceivable that the line elements are covered for better assembly by a film-like insulating element and that an additional insulating element is arranged between two line elements. In this way, it can advantageously be ensured that the line elements are sufficiently insulated with respect to one another.
It is furthermore proposed that at least two line elements run concentrically to one another. Alternatively or additionally, it is conceivable for at least two line elements, in particular all line elements, to run parallel to one another. The damage resistance can be further improved by the concentric design.
It is furthermore proposed that the cable has a shielding element which is at least partially composed of carbon nanotubes or graphene. The shielding element is designed for electromagnetic shielding or as a mechanical protection device. The shielding element is arranged in particular at a distance from the line element, wherein at least one insulating element is arranged between the shielding element and the line element. Preferably, the shielding element consists of a tape or fiber consisting essentially entirely of carbon nanotubes or graphene.
The invention further relates to a hand-held power tool having a cable as described above. In this way, a plug-in hand-held power tool can be advantageously realized, which can be operated particularly advantageously due to the saving weight of the cable and which can be particularly well protected against damage due to the rigidity of the cable, such as, for example, the cable being cut off during operation with the hand-held power tool. A hand-held power tool is to be understood here to mean, in particular, a power tool which is operated at least partially manually during operation. The hand-held power tool is particularly designed to be portable. The hand-held power tool is in particular designed to be detachably connectable to an insertion tool. The hand-held power tool has a drive unit which includes an electric motor and which can be connected to an energy source, for example an electrical network or a generator, via a cable. The hand-held power tool can be configured, for example, as a screwdriver, a hammer drill, a rotary impact screwdriver, an angle grinder, a cutting machine, a reciprocating saw, a grinding machine, a hand-held milling machine, etc.
Drawings
Further advantages are obtained from the following description of the figures. The figures, description and claims contain a combination of features. The person skilled in the art will also expediently consider the features individually and summarize them into meaningful further combinations. The reference numerals of the features of the different embodiments of the invention are basically provided with the same numerals and with letters that designate the embodiments, respectively.
The figures show:
fig. 1 is a side view of a hand-held power tool with a cable according to the invention;
FIG. 2 is a cross-section of the cable according to FIG. 1;
FIG. 3 is a cross-section of an alternative embodiment of a cable;
fig. 4a cross-section of another alternative embodiment of a cable.
Detailed Description
Fig. 1 shows a side view of a hand-held power tool 10 having a cable 12 according to the invention. The hand-held power tool 10 is embodied, for example, as a hammer drill 14. The hand-held power tool 14 has a housing 16 in which a drive unit 18 is arranged. The drive unit is coupled to the tool receiver 20 via a transmission. The tool receiver 20 is configured for detachably securing an insertion tool 22. The drive unit 18 has an electric motor. The housing 16 of the hand-held power tool 10 is designed, for example, in the shape of a pistol. At the end of the hand-held power tool 10 facing away from the tool receiver 20, a handle 24 is arranged, which extends substantially perpendicular to the longitudinal extension of the hand-held power tool 10. The cable 12 is connected to the hand-held power tool 10 at the lower end of the handle 24. The cable 12 is electrically connected to the drive unit 18.
A cross-section of the cable 12 is shown in fig. 2. The cable 12 has three wire elements 32. The wire element 32 is composed entirely of carbon nanotube fibers. Alternatively, it is also conceivable for the wire element 32 to be formed entirely from graphene fibers.
The first line element 34 is designed, for example, as a line 36 or as an external line. The first wire element 34 has a circular cross-section. The first wire element 34 extends centrally along the longitudinal axis of the cable 12. The second line element 38 is designed, for example, as a neutral line 40. The second wire element 38 has a circular cross-section. The second conductor element 38 radially surrounds the first conductor element 34 and extends concentrically with the longitudinal axis of the cable 12. The third line element 42 is designed as a ground line 44. The third line element 42 also has a circular cross section and radially surrounds the inner line elements 34, 38. The third wire element 42 has a larger outer diameter than the second wire element 38 and the second wire element 38 has a larger outer diameter than the first wire element 34.
The wire elements 32 are arranged spaced apart relative to each other. Between the line elements 32, in each case an insulating element 46 is arranged. The insulating element 46 is made of a non-conductive plastic. The insulating element 46 has a circular cross-section.
A cross-section of an alternative embodiment of the cable 12a is shown in fig. 3. The cable 12a has an oval cross-section. The cable 12a has, for example, three conductor elements 32 a. The wire element 32a is, for example, entirely made of graphene fibers. The first wire element 34 in the form of a wire 36a and the second wire element 38a in the form of a neutral wire 40a each have a circular cross section and extend parallel to one another. The two line elements 34a,38a are surrounded by a third line element 42a, which is designed as a ground line 44 a. The third wire element 42a has a circular cross-section with a substantially oval outer contour. The wire elements 32a are insulated relative to each other by an insulating element 46 a.
A cross-section of another alternative embodiment of the cable 12 is shown in fig. 4. The cable 12a has a substantially rectangular cross-section. The cable 12b has three conductor elements 32b, which each have a substantially rectangular cross section and are arranged parallel to one another. The wire element 32b is constituted entirely of a carbon nanotube ribbon, for example. However, it is also conceivable for the wire element 32b to be formed entirely from graphene strips. It is also conceivable that the wire element consists of a plurality of graphene ribbons and/or carbon nanotube ribbons. Furthermore, the tapes themselves may also consist of a mixture of carbon nanotubes and graphene. The wire elements 32b are arranged spaced apart from each other. The cable 12 has an insulating member 46b such that the wire members 32b are insulated relative to each other.
Claims (9)
1. A cable for a hand-held power tool (10) having at least one conductor element (32) and having at least one insulating element (46), wherein the insulating element (46) radially surrounds the conductor element (32),
it is characterized in that the preparation method is characterized in that,
the conductor elements (32) are configured as fibers, yarns, strands, ribbons or other textile formations, which are substantially completely composed of carbon nanotubes or graphene.
2. A cable according to claim 1, characterized in that at least one wire element (32) has a substantially circular cross-section.
3. A cable according to any one of the preceding claims, characterized in that at least one conductor element (32) has a substantially circular cross-section.
4. A cable according to any one of the preceding claims, wherein at least one wire element has a rectangular cross-section.
5. Cable according to any one of the preceding claims, characterized in that the cable (12) has at least two conductor elements (32) which are insulated with respect to each other by at least one insulating element (46).
6. A cable according to any one of the preceding claims, characterized in that at least two conductor elements (32) extend concentrically to each other.
7. Cable according to claim 6, characterized in that at least two conductor elements (32a,32b), in particular all conductor elements, extend parallel to each other.
8. Cable according to any of the preceding claims, characterized in that the cable has a shielding element which is at least partly composed of carbon nanotubes or graphene.
9. A hand-held power tool (10) having a cable (12) according to any one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018218676.6A DE102018218676A1 (en) | 2018-10-31 | 2018-10-31 | Cable for a hand machine tool |
| DE102018218676.6 | 2018-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111128444A true CN111128444A (en) | 2020-05-08 |
Family
ID=70416924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911050439.4A Pending CN111128444A (en) | 2018-10-31 | 2019-10-31 | Cable for a hand-held power tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111128444A (en) |
| DE (1) | DE102018218676A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20121580U1 (en) * | 2001-11-16 | 2003-04-03 | Bosch Gmbh Robert | Flexible mains cable for hand-held electrical appliances, has conductors comprising interwoven bundles of individual strands |
| CN200979808Y (en) * | 2006-12-01 | 2007-11-21 | 张凤林 | A mine-used coal electric drill and cable |
| CN203631147U (en) * | 2013-07-19 | 2014-06-04 | 上海悦达墨特瑞新材料科技有限公司 | Graphene fiber insulation cable |
| CN105529087A (en) * | 2016-01-29 | 2016-04-27 | 江苏艾立可电子科技有限公司 | High-performance cable for American-standard electric power tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101458846B1 (en) | 2004-11-09 | 2014-11-07 | 더 보드 오브 리전츠 오브 더 유니버시티 오브 텍사스 시스템 | The fabrication and application of nanofiber ribbons and sheets and twisted and non-twisted nanofiber yarns |
| AU2006345024C1 (en) | 2005-07-28 | 2012-07-26 | Nanocomp Technologies, Inc. | Systems and methods for formation and harvesting of nanofibrous materials |
| EP2392700B1 (en) | 2010-04-28 | 2012-06-20 | Teijin Aramid B.V. | Process for spinning graphene ribbon fibers |
| KR101936562B1 (en) | 2011-09-07 | 2019-01-10 | 데이진 아라미드 비.브이. | Carbon nanotubes fiber having low resistivity, high modulus and/or high thermal conductivity and a method of preparing such fibers by spinning using a fiber spin-dope |
| CN105603581B (en) | 2016-01-25 | 2017-12-26 | 浙江大学 | A kind of graphene fiber of quick response and preparation method thereof |
-
2018
- 2018-10-31 DE DE102018218676.6A patent/DE102018218676A1/en active Pending
-
2019
- 2019-10-31 CN CN201911050439.4A patent/CN111128444A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20121580U1 (en) * | 2001-11-16 | 2003-04-03 | Bosch Gmbh Robert | Flexible mains cable for hand-held electrical appliances, has conductors comprising interwoven bundles of individual strands |
| CN200979808Y (en) * | 2006-12-01 | 2007-11-21 | 张凤林 | A mine-used coal electric drill and cable |
| CN203631147U (en) * | 2013-07-19 | 2014-06-04 | 上海悦达墨特瑞新材料科技有限公司 | Graphene fiber insulation cable |
| CN105529087A (en) * | 2016-01-29 | 2016-04-27 | 江苏艾立可电子科技有限公司 | High-performance cable for American-standard electric power tool |
Non-Patent Citations (3)
| Title |
|---|
| 朱美芳等: "《中国战略性新兴产业——新材料 高性能纤维》", 30 November 2017, 中国铁道出版社 * |
| 李清文等: "《高性能纤维技术丛书 碳纳米管线网》", 31 July 2018, 国防工业出版社 * |
| 陈照峰: "《无机非金属材料学》", 29 February 2016, 西北工业大学出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018218676A1 (en) | 2020-04-30 |
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Application publication date: 20200508 |