CN117423498B - Mobile cable with deformation prevention and easy shape recovery - Google Patents
Mobile cable with deformation prevention and easy shape recovery Download PDFInfo
- Publication number
- CN117423498B CN117423498B CN202311744283.6A CN202311744283A CN117423498B CN 117423498 B CN117423498 B CN 117423498B CN 202311744283 A CN202311744283 A CN 202311744283A CN 117423498 B CN117423498 B CN 117423498B
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- CN
- China
- Prior art keywords
- axial
- isosceles trapezoid
- cable
- core wires
- deformation
- Prior art date
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- 238000011084 recovery Methods 0.000 title claims description 6
- 230000002265 prevention Effects 0.000 title claims description 3
- 239000004020 conductor Substances 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
- H01B7/17—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
- H01B7/184—Sheaths comprising grooves, ribs or other projections
-
- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention relates to the technical field of wires and cables, in particular to a deformation-preventing and shape-easily-restored mobile cable, which can ensure that the cable is not easy to damage when being wound and unwound or wound and hung frequently.
Description
Technical Field
The invention relates to the technical field of wires and cables, in particular to a mobile cable with deformation resistance and easy shape recovery.
Background
For a cable used in a movable way, the winding and unwinding are required to be carried out frequently, or the winding and unwinding are carried out frequently, the winding and unwinding are carried out by using a winding drum, the winding and unwinding are carried out by using hooks which are arranged, the cable with the common round core wire in the market can be repeatedly bent and twisted in the actual cable use process, when the cable is wound and unwound or wound and unwound, as the cable is in any bending state, parts of the cable are even in the surrounding state, the core wires of the inner ring of the bending part are pressed, the core wires of the outer ring are pulled, relative axial and circumferential sliding can be generated between the core wires in the cable, the phenomena of local twisting and swelling can occur initially, the difference of the cold and hot expansion coefficients of different materials on the cable can be caused after the frequent winding and unwinding, the twisting motion of the cable can continuously lead the cable to local twisting deformation in the actual use, the cable core wires can generate tangential stress, the cable core wires can not be damaged in the winding and unwinding or unwinding process, the cable working performance of the cable can not be influenced, the cable is provided with higher requirements for wire production enterprises, and the cable is expected to be improved, and the safety of users can also be expected to use.
Disclosure of Invention
The invention aims to solve the technical problems that: provided is a mobile cable which is deformation-proof and easy to recover in shape, and which is not easy to damage when the cable is frequently wound or unwound.
The technical scheme adopted for solving the technical problems is as follows: a mobile cable which is deformation-proof and easy to recover in shape, and is provided with core wires, wherein the core wires comprise conductors and an insulating sleeve for wrapping the conductors, the cable is provided with at least two core wires and an outer sheath for wrapping all the core wires, the outer part of the insulating sleeve on each core wire is provided with an axial protrusion and/or an axial groove, and the two contacted core wires are meshed with the axial groove of the other core wire at the contact part of the two core wires through the axial protrusion of one core wire; the cross section of the axial protrusion is a double trapezoid formed by stacking a first isosceles trapezoid and a second isosceles trapezoid along the height direction, the bottom of the first isosceles trapezoid is the top of the second isosceles trapezoid, the cross section of the axial groove is a double trapezoid formed by arranging a third isosceles trapezoid and a fourth isosceles trapezoid inside and outside along the depth direction, the bottom of the third isosceles trapezoid is the top of the fourth isosceles trapezoid, the bottom angle of the first isosceles trapezoid is the same as the bottom angle of the third isosceles trapezoid, and the bottom angle of the second isosceles trapezoid is larger than the bottom angle of the fourth isosceles trapezoid;
the positioning of the core wires in the outer sheath is realized by the contact structure of the core wires, the gradual change from the meshing to half meshing and the disengaging state of the axial protrusions and the axial grooves between the core wires is formed when the core wires are partially deformed, and the deformation part is easily restored to the meshing of the axial protrusions and the axial grooves by external force; the axial protrusion and the axial groove have axial sliding and radial movement between the two when disengaged and when restored to engagement.
Specifically, the external force is an axial pulling force on the cable and/or a pressing force on the cable along the circumferential direction, wherein the pressing force gradually moves from the undeformed part to the deformed part.
Specifically, if the core wires are three or more, each core wire has at least two contact parts contacting with other core wires, and the influence on the wrapping performance of the insulating sleeve for wrapping the conductor is set for the balance protrusion and the groove, so that when the cable has three or more core wires, the outside of the insulating sleeve on each core wire is provided with at least one axial protrusion and at least one axial groove.
Specifically, a protective layer and/or filler is also arranged between the outer sheath and the core wire.
Specifically, the core wires are parallel to each other or twisted with each other.
The beneficial effects of the invention are as follows:
1. according to the cable, through the meshed double-trapezoid axial protrusions and axial grooves, the position state between the core wires is stable by the meshing of the first isosceles trapezoid and the third isosceles trapezoid, and deformation is not easy to occur;
2. if local deformation is generated due to retraction, when the local deformation is not serious at a plurality of positions at the beginning, the automatic recovery shape can be realized through the axial pulling force of the cable when the cable is retracted, at the moment, under the action of the pulling force, the axial protrusion and the axial groove which are partially and semi-meshed gradually mesh normally under the guiding action of a fourth isosceles trapezoid of the axial groove on a first isosceles trapezoid of the axial protrusion, and the axial protrusion and the axial groove which are partially and semi-meshed gradually become semi-meshed and normally meshed under the guiding action of the axial protrusion and the axial groove which are adjacent to normal meshing;
3. if serious deformation is generated at the beginning, the axial protrusion can be gradually pressed into the axial groove from the normal meshing position to the abnormal meshing position by using the extrusion force along the circumferential direction, so that the shape of the axial protrusion can be recovered, and if the deformation is more serious, the axial protrusion can be recovered by combining the external force of kneading;
therefore, the cable of the invention keeps the shape and the position of the core wire unchanged in the moving process by the limitation of the surface protrusions and the notch of the insulating sleeve, the shape recovery process is easy to realize, and the phenomena of knotting, twisting, swelling, fracture failure and the like in the using process of the moving cable are avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of a cable according to example 1 of the present invention;
FIG. 2 is an enlarged view at A of FIG. 1;
fig. 3 is a perspective view of a core wire in embodiment 1 of the present invention;
FIG. 4 is a cross-sectional shape of an axial protrusion of embodiment 1 of the present invention;
FIG. 5 is a cross-sectional shape of the axial groove of embodiment 1 of the present invention;
FIG. 6 is a schematic cross-sectional view of a cable according to example 2 of the present invention;
FIG. 7 is a schematic view in a vertical direction of a cable deformation;
fig. 8 is a schematic view of the cable deformation in the horizontal direction.
In the figure: 1. the conductor, 2, insulating sleeve, 2-1, axial protrusion, 2-1-1, first isosceles trapezoid, 2-1-2, second isosceles trapezoid, 2-2, axial groove, 2-2-1, third isosceles trapezoid, 2-2-2, fourth isosceles trapezoid, 3, outer sheath, 4, protective layer, 5, filler.
Detailed Description
The following describes the technical scheme in the embodiment of the present invention in detail with reference to the drawings of the specification of the present invention.
Example 1:
the anti-deformation and shape-easy-to-recover mobile cable shown in the figure 1 is provided with three core wires, each core wire comprises a conductor 1 and an insulating sleeve 2 wrapping the conductor 1, the cable is provided with an outer sheath 3 wrapping all the core wires, a protective layer 4 and a filler 5 are further arranged between the outer sheath 3 and the core wires, as shown in the figure 3, an axial protrusion 2-1 and an axial groove 2-2 are arranged outside the insulating sleeve 2 on each core wire, the extrusion die structure of the cable insulating sleeve 2 is the same, and in combination with the figure 2, the contacted core wires are meshed into the axial groove 2-2 of the other core wire by the axial protrusion 2-1 of one core wire at each contact part, as shown in the figure 4, the cross section of the axial protrusion 2-1 is a double trapezoid of which the first isosceles trapezoid 2-1 and the second isosceles trapezoid 2-1 are laminated along the height direction, the bottom of the first isosceles trapezoid 2-1 is the top of the second trapezoid 2-1-2, as shown in the figure 5, the cross section of the axial groove 2-2 is a third isosceles trapezoid 2-1 and the fourth isosceles trapezoid 2-1-2-2 is the same as the bottom of the fourth trapezoid 2-2-1-2-2, and the isosceles trapezoid 2-1-2-2-2 is the same as the top and the bottom of the fourth trapezoid 2-2-2-1-2-isosceles trapezoid 2-1-2-2-2-1;
in order to realize that the axial protrusion 2-1 is meshed with the axial groove 2-2, the length of the top of the first isosceles trapezoid 2-1 is smaller than that of the top of the third isosceles trapezoid 2-2-1, the rest length dimensions of the trapezoids are arranged in the same way according to meshing requirements, the base angle of the second isosceles trapezoid 2-1-2 is larger than that of the fourth isosceles trapezoid 2-2, so that the axial protrusion 2-1 and the axial groove 2-2 form more surface contact instead of line contact during deformation, and the fourth isosceles trapezoid 2-2-2 forms a larger opening so as to easily guide the first isosceles trapezoid 2-1-1;
three functions are realized by the contact structure of the core wires, namely, the positioning of the core wires in the outer sheath 3; secondly, when the core wires are partially deformed, the axial protrusions 2-1 and the axial grooves 2-2 between the core wires form a gradual change from engagement to semi-engagement and disengagement, wherein the semi-engagement means that part of the axial protrusions 2-1 are positioned in the axial grooves 2-2; thirdly, the deformation part is easily restored to the engagement of the axial protrusion 2-1 and the axial groove 2-2 by external force, as shown in fig. 7 and 8, the external force for restoring the shape is axial pulling force on the cable and/or extrusion force on the cable gradually moving from the undeformed part to the deformation part along the circumferential direction, in the figure, the Z-pulling force and the X-and Y-extrusion force decomposed in the circumferential direction are shown in the figure, and as can be seen from the drawing, the axial protrusion 2-1 and the axial groove 2-2 have axial sliding and radial movement between the axial protrusion 2-1 and the axial groove 2-2 when disengaged and restored to the engagement, and only the axial sliding exists between the axial protrusion 2-1 and the axial groove 2-2 which are normally engaged.
Example 2:
another anti-deformation and shape-easy-restoration mobile cable as shown in fig. 6 is provided with two core wires, a common protective wire in daily life is of the structure, each core wire comprises a conductor 1 and an insulating sleeve 2 for wrapping the conductor 1, the cable is provided with an outer sheath 3 for wrapping all the core wires, an axial protrusion 2-1 is arranged on the outer part of the insulating sleeve 2 on one core wire, an axial groove 2-2 is arranged on the outer part of the insulating sleeve 2 on the other core wire, the two core wires are meshed with the axial groove 2-2 by the axial protrusion 2-1 at the contact part of the two core wires, so that the core wires are positioned in the outer sheath 3, and the axial protrusion 2-1 is meshed with the axial groove 2-2 by external force when the axial protrusion 2-1 and the axial groove 2-2 are disengaged after the core wires are partially deformed, and the external force for restoring the shape is the axial extrusion force on the cable and/or the extrusion force on the cable, which gradually moves from the undeformed part to the deformed part along the circumferential direction, along the circumferential direction is realized manually or realized by a simulated manual manipulator.
As in embodiment 1, the cross sections of the axial protrusions 2-1 and the axial grooves 2-2 are double trapezoids;
the cords of the two embodiments are parallel to each other or twisted about each other.
When the cable is manufactured, when the insulating sleeve 2 of the wire core is extruded, the axial protrusions 2-1 and/or the axial grooves 2-2 are extruded on the surface of the insulating sleeve 2, and when the outer sheath 3 is applied, the core wire can be guided through the guide wheel, the guide wheel can guide the axial running direction of the core wire and also position the circumferential state of the core wire, so that the axial protrusions 2-1 and the axial grooves 2-2 of the mutual contact parts of the core wires are protected to be meshed; the circumference of the core wire is positioned by arranging a circumference convex ring on the guide wheel, and pressing the convex ring in the axial groove 2-2 or in a guide process groove specially arranged on the outer surface of the insulating sleeve 2.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (4)
1. A mobile cable with deformation prevention and easy shape recovery, having a core wire comprising a conductor (1) and an insulating sheath (2) surrounding the conductor (1), characterized in that:
the cable is provided with at least two core wires and an outer sheath (3) wrapping all the core wires, wherein the outer part of the insulating sleeve (2) on each core wire is provided with an axial protrusion (2-1) and/or an axial groove (2-2), and the two contacted core wires are meshed into the axial groove (2-2) of the other core wire at the contact part of the two core wires through the axial protrusion (2-1) of one core wire;
the cross section of the axial protrusion (2-1) is a double trapezoid formed by stacking a first isosceles trapezoid (2-1-1) and a second isosceles trapezoid (2-1-2) along the height direction, the bottom of the first isosceles trapezoid (2-1-1) is the top of the second isosceles trapezoid (2-1-2), the cross section of the axial groove (2-2) is a double trapezoid formed by arranging a third isosceles trapezoid (2-2-1) and a fourth isosceles trapezoid (2-2-2) along the depth direction inside and outside, the bottom of the third isosceles trapezoid (2-2-1) is the top of the fourth isosceles trapezoid (2-2-2), the bottom angle of the first isosceles trapezoid (2-1-1) is the same as the bottom angle of the third isosceles trapezoid (2-2-2-2), the bottom angle of the second isosceles trapezoid (2-1-2) is larger than the bottom angle of the fourth isosceles trapezoid (2-2-2), and the top of the first isosceles trapezoid (2-1-1) is smaller than the third isosceles trapezoid (2-1-2);
the mutual contact structure of the core wires realizes the positioning of the core wires in the outer sheath (3), the gradual change from the self-engagement to the semi-engagement and the disengagement between the axial protrusions (2-1) and the axial grooves (2-2) when the core wires are partially deformed, and the deformation part is restored to the engagement between the axial protrusions (2-1) and the axial grooves (2-2) by external force;
the half engagement means that part of the axial protrusion (2-1) is positioned in the axial groove (2-2);
the external force is axial pulling force to the cable and/or extrusion force to the cable along the circumferential direction, wherein the extrusion force gradually moves from the undeformed part to the deformed part.
2. The deformation-resistant and shape-recoverable mobile cable according to claim 1, wherein: the cable is provided with three or more core wires, and at least one axial protrusion (2-1) and at least one axial groove (2-2) are arranged on the outer part of the insulating sleeve on each core wire.
3. The deformation-resistant and shape-recoverable mobile cable according to claim 1, wherein: a protective layer (4) and/or a filler (5) is arranged between the outer sheath (3) and the core wire.
4. The deformation-resistant and shape-recoverable mobile cable according to claim 1, wherein: the core wires are parallel or stranded with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744283.6A CN117423498B (en) | 2023-12-19 | 2023-12-19 | Mobile cable with deformation prevention and easy shape recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744283.6A CN117423498B (en) | 2023-12-19 | 2023-12-19 | Mobile cable with deformation prevention and easy shape recovery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117423498A CN117423498A (en) | 2024-01-19 |
| CN117423498B true CN117423498B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311744283.6A Active CN117423498B (en) | 2023-12-19 | 2023-12-19 | Mobile cable with deformation prevention and easy shape recovery |
Country Status (1)
| Country | Link |
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| CN (1) | CN117423498B (en) |
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| CN114566314A (en) * | 2022-02-28 | 2022-05-31 | 华远高科电缆有限公司 | New forms of energy photovoltaic intelligent copper alloy power cable |
| CN217691664U (en) * | 2022-03-17 | 2022-10-28 | 河南澳美电气有限公司 | Electronic wire connecting structure of mutual inductor |
| CN219676933U (en) * | 2023-05-19 | 2023-09-12 | 临安迅驰电子有限公司 | Double-core coaxial cable |
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| CN208000766U (en) * | 2018-02-05 | 2018-10-23 | 深圳市希森美克新材料科技有限公司 | A kind of improved abradability aluminium oxide coating structure |
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| JP2004234898A (en) * | 2003-01-28 | 2004-08-19 | Yazaki Corp | Branch cable |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN117423498A (en) | 2024-01-19 |
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