CN112489863B - Cable with a flexible connection - Google Patents
Cable with a flexible connection Download PDFInfo
- Publication number
- CN112489863B CN112489863B CN201910864382.5A CN201910864382A CN112489863B CN 112489863 B CN112489863 B CN 112489863B CN 201910864382 A CN201910864382 A CN 201910864382A CN 112489863 B CN112489863 B CN 112489863B
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- CN
- China
- Prior art keywords
- wire
- cable
- bundle
- braided
- core
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- 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
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- 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
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- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
Landscapes
- Cable Accessories (AREA)
Abstract
The invention discloses a cable. According to the invention, the cable outer cover surrounds the wire core bundle along the outer enveloping surface of the wire core bundle to form a wire cavity for accommodating the wire core bundle, so that the size of the cable is smaller by omitting a waterproof filler in the wire cavity; moreover, the cable can be provided with a braided shielding layer to improve the signal transmission quality of the wire core bundle; in addition, the ground wire of the cable is not a braided bundle stripped from the braided shielding layer, but a single ground wire filament in conductive contact with the braided shielding layer is selected, and the single ground wire filament does not obstruct waterproof glue to fill the through hole of the ground wire like the braided bundle, so that the dispensing sealing effect of the through hole of the ground wire of the cable joint is improved. Therefore, the adhesive dispensing sealing is combined with the adhesive dispensing sealing of the wire core perforation of the cable joint, and even if the wire cavity of the cable is not provided with waterproof fillers, the cable still has reliable waterproof capability.
Description
Technical Field
The invention relates to a cable waterproof technology, in particular to a cable with waterproof capability.
Background
Small devices, such as video cameras, often require cables to transmit signals. However, since the device is disposed in a humid or water-vapor environment in actual use, how to provide the waterproof capability for the cable becomes a technical problem to be solved in the prior art.
Disclosure of Invention
One embodiment of the present invention provides a cable comprising:
the cable core bundle comprises a plurality of cable cores gathered together;
a cable jacket surrounding a wire cavity accommodating the wire core bundle along an outer envelope surface of the wire core bundle, and including a braided shield layer having staggered braided bundles;
a ground wire, a single one of the ground wires in conductive contact with the braided shield;
the cable joint blocks an end face opening of the cable cavity;
the cable joint is provided with a wire core perforation and a grounding wire perforation, a plurality of wire cores of the wire core bundle penetrate out of the wire cavity through the wire core perforation, a single grounding wire penetrates out of the wire cavity through the grounding wire perforation, and the wire core perforation and the grounding wire perforation are sealed in a dispensing mode.
Optionally, the ground wire is located between the braided shield and the wire core bundle.
Optionally, the cable is radially trapped against the core bundle, and the ground wire is pressed and attached between the braided shield and the core bundle.
Optionally, the continuous extension length of the ground wire within the wire lumen is the same as the deployed length of the braided shield layer.
Optionally, the ground wire has a diameter less than an outer diameter of a strand of the single braided bundle of the braided shield.
Optionally, the diameter of the ground wire is greater than the wire diameter of a single wire core of the bundle of wire cores.
Optionally, the ground wire is a copper wire.
Optionally, the cable joint includes a sleeve and an end plate located on an end surface of the sleeve, wherein the sleeve is sleeved on an outer periphery of the cable jacket, the end plate covers an end surface opening of the cable cavity, and the cable core perforation and the ground wire perforation are located on the end plate.
Optionally, the outer end of the section through which the ground wire passes is provided with a terminal clip.
Optionally, the cable jacket further comprises a waterproof layer, and/or a fire-resistant layer, and/or a physical protective layer at an outer layer of the braided shielding layer.
Based on the embodiment, the cable is surrounded by the wire cavity which is used for accommodating the wire core bundle along the outer enveloping surface of the wire core bundle, so that the size of the cable is smaller by omitting the waterproof filler in the wire cavity; moreover, the cable can be provided with a braided shielding layer to improve the signal transmission quality of the wire core bundle; in addition, the ground wire of the cable is not a braided bundle stripped from the braided shielding layer, but a single ground wire filament in conductive contact with the braided shielding layer is selected, and the single ground wire filament does not obstruct waterproof glue to fill the through hole of the ground wire like the braided bundle, so that the dispensing sealing effect of the through hole of the ground wire of the cable joint is improved. Therefore, the adhesive dispensing sealing is combined with the adhesive dispensing sealing of the wire core perforation of the cable joint, and even if the wire cavity of the cable is not provided with waterproof fillers, the cable still has reliable waterproof capability.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention:
FIG. 1 is a partial cross-sectional view of a cable in one embodiment of the invention;
FIG. 2 is a cross-sectional schematic view of the cable shown in FIG. 1;
fig. 3 is a partial cross-sectional view of a cable in a comparative example.
Description of the reference numerals
10 wire core bundle
10 wire core
10a conductor
10b wire core outer cover
20 cable outer cover
21 braided shield
210 braided bundle
22 protective layer
30 ground wire
40 cable joint
41 sleeve
42 end plate
43 Flange
44 external screw thread
50 wiring clip
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
FIG. 1 is a partial cross-sectional view of a cable in one embodiment of the invention. Fig. 2 is a schematic cross-sectional view of the cable shown in fig. 1. Referring to fig. 1 in conjunction with fig. 2, the cable in this embodiment includes a bundle of wire cores 10, a cable jacket 20, a ground wire 30, and a cable lug 40.
The bundle of wire cores 10 may include a plurality of wire cores 10 gathered together with each other, for example, adjacent wire cores 10 may contact each other. In this embodiment, the core 10 included in the bundle of the cores 10 may be adapted for signal transmission, and each of the cores 10 may include a conductive wire 10a and a core outer cover 10b covering the conductive wire 10 a.
The cable jacket 20 may surround along the outer envelope surface of the cable core 10 bundle to form a cable cavity for accommodating the cable core 10 bundle, that is, a filling space for filling the waterproof filler may not be reserved between the cable core 10 bundle and the cable jacket 20, and accordingly, the cable cavity formed by surrounding the cable jacket 20 may not be filled with the waterproof filler, so that the waterproof filler in the cable cavity may be omitted to replace a smaller cable size.
The cable jacket 20 may include a braided shield 21. When the wire core 10 bundle is used for signal transmission, the presence of the braided shielding layer 21 can improve the signal transmission quality of the wire core 10 bundle. The braided shield 21 may be braided into a mesh shape by copper or other metal wires in a crisscross manner. In practical applications, the cable jacket 20 may further include a protective layer 22 at an outer layer of the braided shielding layer 21, for example, the protective layer 22 may include a waterproof layer, and/or a fire-resistant layer, and/or a physical protective layer, as required.
The ground wire 30 may be in conductive contact with the braided shield 21. For example, the ground wire 30 may be located between the braided shield 21 and the core 10 bundle, at this time, if the cable outer 20 forms a radial trap to the core 10 bundle, that is, the cable outer 20 forms to the core 10 bundle to force the plurality of cores 10 to press-contact with each other, the ground wire core 30 may be press-fitted between the braided shield 21 and the core 10 bundle to ensure the reliability of the conductive contact of the ground wire core 30 and the braided shield 21.
Since the wire cavity formed by the cable jacket 20 may not be filled with waterproof filler, even if the cable jacket 20 may form a radial trap for the bundle of wire cores 10, there may still be an excessive gap in the wire cavity. In consideration of the fact that the cable is bent or twisted during use, the ground wire core 30 is difficult to avoid the deviation caused by the extrusion due to the bending or twisting of the cable because of the gap, so that in order to avoid the disconnection of the conductive contact between the ground wire core 30 and the braided shielding layer 21 caused by the deviation, the continuous extension length of the ground wire core 30 in the wire cavity can be increased to increase the effective contact range between the ground wire core 30 and the braided shielding layer 21, thereby reducing the probability that the conductive contact between the ground wire core 30 and the braided shielding layer 21 is disconnected caused by the deviation of the ground wire core 30. For example, the continuous extension length of the ground wire within the wire lumen is the same as the deployed length of the braided shield.
In practice, the grounding wire 30 may be copper wire. When the braided shield 21 is also chosen to be braided from copper wires, the ground wires 30 should still be considered as a separate wire structure from the braided shield 21, since the ground wires 30 are not braided into the braided shield 21.
The cable connector 40 may be any interface element suitable for cable butt, such as SR (steel trunking), the cable connector 40 may block an end opening of a wire cavity formed by the cable outer cover 20, and the cable connector 40 has a wire core through hole 410 and a ground wire through hole 420. For example, the cable lug 40 may include a sleeve 41, and an end plate 42 located at an end face of the sleeve 41. Wherein, the sleeve 41 is sleeved on the periphery of the cable jacket 20, and the sleeve 41 can have a flange 43 and an external thread 44; the end plate 42 covers the end opening of the wire cavity formed by the cable jacket 20, and the wire core through hole 410 and the ground wire through hole 420 may be located in the end plate 42.
The plurality of cores 10 of the bundle of cores 10 may pass out from the wire cavity through the core perforation 410, the ground wire 30 may pass out from the wire cavity through the ground wire perforation 420, and the core perforation 410 and the ground wire perforation 420 are sealed by dispensing. Therefore, even if the wire cavity of the cable is not provided with the waterproof filler, the cable still has reliable waterproof capability.
Fig. 3 is a partial cross-sectional view of a cable in a comparative example. Referring to fig. 3, in a comparative example, the ground wire of the cable is selected as a braided bundle 210 stripped from the braided shield 21. The braided bundle 210 stripped from the braided shield 21 comprises a plurality of filaments, and no matter how tight the plurality of filaments are intertwined, the braided bundle 210 cannot be in a tightly converged state, particularly at the junction of the braided bundle 210 and the braided shield 21. Therefore, the yarn fluffy state of the weaving bundle 210 is not favorable for dispensing and filling the ground wire through hole 420, for example, the glue filled by dispensing can be attached to the fluffy yarn of the weaving bundle 210, so that a glue leakage gap exists between the fluffy yarn of the weaving bundle 210. That is, the ravel threads of the braided bundle 210 may disrupt the integrity of the dispensed gel distribution, thereby resulting in a failure of the seal to the ground wire perforation 420. At this time, even if the core through hole 410 is effectively sealed by dispensing, the leakage gap existing at the ground wire through hole 410 still allows moisture to enter the inside of the cable, thereby causing the overall waterproof failure of the cable.
Compared with the comparative example shown in fig. 3, the ground wire of the cable of the embodiment shown in fig. 1 and 2 is not the braided bundle 210 stripped from the braided shield layer 21, but a single ground wire 30 in conductive contact with the braided shield layer 21 is selected, and the single ground wire 30 does not obstruct waterproof glue from filling the ground wire through hole like the braided bundle 210, so that the glue-sealing effect on the ground wire through hole 420 of the cable joint can be improved.
Also, in the embodiment shown in fig. 1 and 2, the diameter of the ground wire filament 30 may be set smaller than the outer diameter of the strand of the single braided bundle 210 of the braided shield 21 to reduce the aperture of the ground wire perforation 420, which is more favorable for the improvement of the sealability; and/or, the diameter of the ground wire 30 may be set to be larger than the diameter of the conductive wire 10a of a single core 10 in the bundle of cores 10 to appropriately enhance the strength of the ground wire 30.
In addition, in the embodiment shown in fig. 1 and 2, the end of the outer section (which may have a length in the range of 30mm to 80 mm) through which the ground wire 30 passes through the ground wire through-hole 420 may be provided with a wire clip 50 for the ground connection of the ground wire 30.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A cable, comprising:
the cable core bundle comprises a plurality of cable cores gathered together;
a cable jacket surrounding a wire cavity accommodating the wire core bundle along an outer envelope surface of the wire core bundle, and including a braided shield layer having staggered braided bundles;
a ground wire, a single of which is exposed within the wire lumen and in electrically conductive contact with the braided shield, and which has a diameter smaller than an outer diameter of a strand of the single braided bundle of the braided shield;
the cable joint blocks an end face opening of the cable cavity;
wherein the cable is externally bundled with the wire core bundle in a radial direction, and the grounding wire is pressed and attached between the braided shielding layer and the wire core bundle;
the cable joint is provided with a wire core perforation and a grounding wire perforation, a plurality of wire cores of the wire core bundle penetrate out of the wire cavity through the wire core perforation, a single grounding wire penetrates out of the wire cavity through the grounding wire perforation, and the wire core perforation and the grounding wire perforation are sealed in a dispensing mode.
2. The cable of claim 1, wherein a continuous extension length of the ground wire within the wire lumen is the same as a deployment length of the braided shielding layer.
3. The cable of claim 1, wherein the ground wire has a diameter greater than a conductor diameter of an individual core of the bundle of cores.
4. The cable of claim 1, wherein the ground wire is a copper wire.
5. The cable of claim 1, wherein the cable connector comprises a sleeve and an end plate located at an end surface of the sleeve, wherein the sleeve is sleeved on an outer periphery of the cable jacket, the end plate covers an end surface opening of the wire cavity, and the wire core through hole and the ground wire through hole are located at the end plate.
6. The cable according to claim 1, wherein the outer end of the segment through which the ground wire penetrates is provided with a terminal clip.
7. The cable according to claim 1, wherein said cable jacket further comprises a water barrier layer, and/or a fire barrier layer, and/or a physical protective layer at the outer layer of said braided shield layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910864382.5A CN112489863B (en) | 2019-09-12 | 2019-09-12 | Cable with a flexible connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910864382.5A CN112489863B (en) | 2019-09-12 | 2019-09-12 | Cable with a flexible connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112489863A CN112489863A (en) | 2021-03-12 |
| CN112489863B true CN112489863B (en) | 2022-05-13 |
Family
ID=74919982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910864382.5A Active CN112489863B (en) | 2019-09-12 | 2019-09-12 | Cable with a flexible connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112489863B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610301A (en) * | 2012-03-23 | 2012-07-25 | 上海交通大学 | Special cable for active surface system of large radio telescope |
| CN202564569U (en) * | 2012-05-16 | 2012-11-28 | 长园电力技术有限公司 | Grounded coaxial cable joint |
| CN103329377A (en) * | 2011-01-19 | 2013-09-25 | 住友电装株式会社 | Wire harness protector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000268893A (en) * | 1999-03-15 | 2000-09-29 | Sumitomo Wiring Syst Ltd | Earth connection structure of plural shield wires |
| CN202189986U (en) * | 2011-08-29 | 2012-04-11 | 张莞榆 | Outdoor control cable |
| CN204597086U (en) * | 2015-04-10 | 2015-08-26 | 艾维新能源科技南京有限公司 | A kind of wire rod |
| CN108471016A (en) * | 2018-05-17 | 2018-08-31 | 无锡华昊电器股份有限公司 | A kind of the air-tightness connector and its manufacture craft of electric vehicle harness |
-
2019
- 2019-09-12 CN CN201910864382.5A patent/CN112489863B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103329377A (en) * | 2011-01-19 | 2013-09-25 | 住友电装株式会社 | Wire harness protector |
| CN102610301A (en) * | 2012-03-23 | 2012-07-25 | 上海交通大学 | Special cable for active surface system of large radio telescope |
| CN202564569U (en) * | 2012-05-16 | 2012-11-28 | 长园电力技术有限公司 | Grounded coaxial cable joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112489863A (en) | 2021-03-12 |
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