CN110867668A - Shielded wire grounding device and electrical equipment - Google Patents
Shielded wire grounding device and electrical equipment Download PDFInfo
- Publication number
- CN110867668A CN110867668A CN201911288960.1A CN201911288960A CN110867668A CN 110867668 A CN110867668 A CN 110867668A CN 201911288960 A CN201911288960 A CN 201911288960A CN 110867668 A CN110867668 A CN 110867668A
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- grounding
- wire
- shielding
- shielding wire
- shielded
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/029—Welded connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
- H01R4/40—Pivotable clamping member
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- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The present invention relates to the field of shielding structures for electrically conductive connections. The shielding wire grounding device comprises a shielding wire and a grounding component, wherein the grounding component is electrically connected with a shielding layer of the shielding wire; the middle section of the shielding wire is provided with a grounding part along the length direction of the shielding wire, a shielding layer of the grounding part is exposed outside the shielding wire, and the shielding layer of the grounding part is electrically connected with the grounding component. Therefore, the current in the shielding layers at the two sides of the grounding part along the length direction of the shielding wire can be quickly discharged through the grounding assembly connected with the grounding part, so that the shielding capability of the shielding wire grounding device on the electromagnetic field of the shielding wire is favorably improved, the electromagnetic interference of the electromagnetic field of the shielding wire on peripheral equipment is favorably reduced, and the normal operation of the peripheral equipment is favorably realized; in addition, the grounding part is arranged in the middle section of the whole shielding wire, the grounding part is grounded through the grounding component, the shielding wire is not cut off in the grounding operation, the performance of the shielding wire for transmitting electromagnetic field signals and energy is not influenced, and the good performance of the shielding wire is favorably ensured.
Description
Technical Field
The invention relates to the field of shielding structures of conductive connection, in particular to a shielding wire grounding device and electrical equipment.
Background
In order to prevent the electromagnetic field of the shield line from causing electromagnetic interference to peripheral devices, it is necessary to perform grounding processing on the shield layer of the shield line.
The grounding device of the shielded wire has various modes, such as a chinese utility model patent with publication number CN203967396U, a chinese utility model patent with publication number CN204030142U, a chinese invention patent application with publication number CN107579360A, etc., the technical scheme disclosed in the above documents all performs grounding treatment on the shielding layer at the end of the shielded wire, and the grounding treatment mode has simple process and can meet the use requirements of most working conditions.
However, under the water treatment condition of the high-frequency electromagnetic field, the shielding wire still causes large electromagnetic interference to surrounding equipment by adopting a grounding mode of grounding the end of the shielding wire.
Disclosure of Invention
One of the objectives of the present invention is to provide a shielded wire grounding device which is beneficial for shielding larger electromagnetic interference and does not affect the performance of the shielded wire.
In order to achieve the above object, the invention provides a shielded wire grounding device comprising a shielded wire and a grounding component, wherein the grounding component is electrically connected with a shielding layer of the shielded wire; the middle section of the shielding wire is provided with a grounding part along the length direction of the shielding wire, a shielding layer of the grounding part is exposed outside the shielding wire, and the shielding layer of the grounding part is electrically connected with the grounding component.
Therefore, through the structural design of the shielding wire grounding device, the existing shielding wire grounding device is usually only used for grounding the shielding layer at the end part of the shielding wire, so that under the condition that the shielding wire is longer and the load of the shielding wire is larger, the current in the middle section of the shielding layer can not be effectively discharged, and the shielding wire still can cause larger electromagnetic interference to surrounding equipment; therefore, the grounding part is arranged on the middle section of the shielding wire, the middle section is not limited to be positioned at the midpoint of the shielding wire in the length direction, the middle section of the shielding wire is understood to be a section of the shielding wire except for two end parts, of course, if the middle section of the shielding wire is only provided with one grounding part, the grounding part is preferably arranged close to the midpoint of the shielding wire in the length direction, and the grounding part at the middle section of the shielding wire is grounded, so that the current in the shielding layers at two sides of the grounding part in the length direction of the shielding wire can be quickly released through the grounding component connected with the grounding part, the shielding capability of the shielding wire grounding device to the electromagnetic field of the shielding wire is favorably improved, the electromagnetic interference of the electromagnetic field of the shielding wire to peripheral equipment is favorably reduced, and the peripheral equipment can; in addition, the grounding part is arranged in the middle section of the whole shielding wire, the grounding part is grounded through the grounding component, the shielding wire is not cut off in the grounding operation, the performance of the shielding wire for transmitting electromagnetic field signals and energy is not influenced, and the good performance of the shielding wire is favorably ensured; the shielding wire grounding device is particularly suitable for high-frequency electromagnetic working conditions such as high-frequency electromagnetic field water treatment and the like.
Preferably, the grounding assembly comprises a grounding hoop and a grounding base body, the grounding hoop is fixed on the grounding base body, and the grounding hoop is clamped on the grounding portion.
It is from top to bottom visible, through ground connection clamp cutting ferrule ground connection, the electric current of shielding layer can be released through the ground connection clamp on the one hand, and on the other hand, the ground connection clamp carries out the card to ground connection portion and fixes, is favorable to ground connection subassembly and ground connection portion to be connected reliable and stable.
In a further aspect, the grounding clamp is welded to the grounding substrate.
It is thus clear that on the one hand be favorable to being connected reliable and stable of ground connection clamp and ground connection base member like this, on the other hand also is favorable to contacting well between ground connection clamp and the ground connection base member, is favorable to reducing the impedance that ground connection subassembly released to the electric current.
The further scheme is that the ground connection clamp is a ring body with a gap, and two ends of the gap of the ground connection clamp are connected through a connecting piece.
Therefore, when the grounding part and the grounding component are installed, the grounding part can enter the annular cavity of the grounding clamp through the notch of the grounding clamp, and the difficulty in matching and installing the grounding component and the grounding part is reduced.
Further, the size of the grounding part in the length direction of the shielding wire is 1 to 2 times of the diameter of the shielding wire, and the size of the grounding clamp in the length direction of the shielding wire is 2 to 4 times of the diameter of the shielding wire.
The grounding assembly further comprises omnibearing conductive foam, the omnibearing conductive foam is coated on the shielding layer of the grounding part, and the omnibearing conductive foam is extruded between the grounding hoop and the shielding layer of the grounding part.
When the grounding part and the grounding component are installed, the omnibearing conductive foam is firstly covered on the shielding layer of the grounding part, then the grounding part covered with the omnibearing conductive foam enters the annular cavity of the grounding hoop through the gap of the grounding hoop, and finally the two ends of the gap of the grounding hoop are connected by adopting the connecting piece, so that the grounding hoop, the omnibearing conductive foam and the shielding layer are sequentially abutted; in addition, the cotton setting of all-round electrically conductive bubble is favorable to increaseing the cotton area of contact of shielding layer and all-round electrically conductive bubble, increases the cotton area of contact of ground connection clamp and all-round electrically conductive bubble, is favorable to reducing the impedance of ground connection subassembly to the electric current leakage.
In another preferred embodiment, the shield layer of the shield line has the grounding portions at least at two positions along the length direction of the shield line, and at least one of the grounding portions is located in the middle section of the shield line.
Therefore, the grounding parts at least two positions are arranged to be grounded, so that the current of the shielding layer can be discharged quickly, the current at each position of the shielding layer in the length direction of the shielding wire can be discharged uniformly, the shielding capability of the shielding wire grounding device on the electromagnetic field of the shielding wire can be improved, the electromagnetic interference of the electromagnetic field of the shielding wire on equipment at the periphery of the shielding wire can be reduced, and the normal operation of the peripheral equipment can be facilitated.
Further, the end of the shield wire has a ground portion.
As can be seen from the above, the grounding portion at the end of the shielding wire can be grounded by using the grounding structure in the prior art, or by using the grounding assembly of the present invention, and the difficulty of arranging the connecting portion and the corresponding grounding structure at the end of the shielding wire is lower, which is beneficial to the simplification of the structure of the shielding wire grounding device and the reduction of the installation difficulty of the shielding wire grounding device.
In still another preferred embodiment, the ground portion is formed by removing an insulating coating from the shield wire.
Therefore, the grounding operation does not cut off the shielding wire, does not influence the performance of the shielding wire for transmitting electromagnetic field signals and energy, and is favorable for ensuring good performance of the shielding wire; the shielding wire grounding device is particularly suitable for high-frequency electromagnetic working conditions such as high-frequency electromagnetic field water treatment and the like.
Another object of the present invention is to provide an electrical device which is advantageous for shielding large electromagnetic interference and does not affect the performance of the shielding line.
In order to achieve the above object, the present invention provides an electrical apparatus including the above shielded-wire grounding device.
Therefore, the shielding wire grounding device is beneficial to good performance of each device in the electrical equipment and avoids large interference of a high-frequency electromagnetic field on the operation performance of each functional module in the electrical equipment.
Drawings
Fig. 1 is a partial schematic structural view of an embodiment of a shielded wire grounding device according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the shielded wire grounding device of the present invention;
fig. 3 is a schematic structural diagram of a shielded wire in an embodiment of the shielded wire grounding device of the present invention;
FIG. 4 is a schematic structural diagram of the shield wire and the omni-directional guiding foam in the embodiment of the shield wire grounding device of the present invention;
fig. 5 is a schematic structural diagram of a preferred embodiment of the shielded wire grounding device of the present invention.
Detailed Description
Shielded wire earthing device:
referring to fig. 1 to 4, the grounding device of the shielded wire of the present embodiment includes a shielded wire 2 and a grounding assembly, the grounding assembly includes a grounding clip 6, a grounding base 5 and an omnidirectional conductive foam 1, the shielded wire 2 has a grounding portion 11, the grounding portion 11 is located on a middle section of the shielded wire 2 along a length direction, the grounding portion 11 is formed by removing an insulating sheath on the shielded wire 2, and a shielding layer 4 of the grounding portion 11 is exposed on an outer surface of the shielded wire 2.
Referring to fig. 1 to 4, a welding portion 7 is provided between the grounding clip 6 and the grounding base 5, the grounding clip 6 is welded to the grounding base 5, the grounding clip 6 is a ring body having a notch 61, and the size of the grounding clip 6 in the length direction of the shielding wire is 2.5 times the diameter of the shielding wire 2. Therefore, when the grounding part 11 and the grounding component are installed, the grounding part 11 can enter the annular cavity of the grounding clamp 6 through the notch 61 of the grounding clamp 6, and the difficulty in matching and installing the grounding component and the grounding part 11 is reduced; and because ground connection clamp 6 and ground connection base member 5 welding, be favorable to ground connection clamp 6 and ground connection base member 5 to be connected reliable and stable on the one hand like this, on the other hand also be favorable to contacting well between ground connection clamp 6 and the ground connection base member 5, be favorable to reducing the impedance of ground connection subassembly to the electric current leakage, be favorable to the quick leakage of electric current in shielding layer 4.
Referring to fig. 1 to 4, the grounding clip 6 is provided with a first connecting lug 62 and a second connecting lug 63 on two sides of the notch 61, the first connecting lug 62 is provided with a through hole 64, the second connecting lug is provided with a threaded hole 65, the screw 3 penetrates through the through hole 64 and is then screwed into the threaded hole 65, so that the first connecting lug 62 and the second connecting lug 63 are connected, and the grounding clip 6, the omnibearing conductive foam 1 and the grounding portion 11 are connected in a matching manner.
In the existing shielded wire grounding device, only the shielding layer 4 at the end of the shielded wire 2 is often subjected to grounding treatment, however, under the working condition of high-frequency electromagnetic field water treatment, because the shielded wire 2 is required to be used for transmitting high-frequency electromagnetic field signals and energy, the electromagnetic field intensity generated by the shielded wire 2 is large, the interference of the magnetic field to peripheral equipment is large, at this time, if only the shielding layer 4 at the end of the shielded wire 2 is subjected to grounding treatment, the current in the middle section of the shielding layer 4 cannot be effectively released, and the shielded wire 2 still causes large electromagnetic interference to peripheral equipment; therefore, the present embodiment provides the grounding portion 11 at the middle section of the shielded wire 2, and the grounding portion 11 electrically connects the grounding component of the present embodiment, where the middle section does not define that the grounding portion 11 is located at the midpoint of the shielded wire 2 in the length direction, the middle section of the shielded wire 2 should be understood as the section of the shielded wire 2 except for two end portions, and of course if only one grounding portion 11 is provided at the middle section of the shielded wire 2, the grounding portion 11 is preferably provided near the midpoint of the shielded wire 2 in the length direction.
The grounding part 11 at the middle section of the shielding wire is grounded, so that the current in the middle section of the shielding layer 4 can be quickly and effectively discharged, the shielding capability of the shielding wire grounding device on the electromagnetic field of the shielding wire 2 is favorably improved, the electromagnetic interference of the electromagnetic field of the shielding wire 2 on peripheral equipment is favorably reduced, and the normal operation of the peripheral equipment is favorably realized; in addition, the grounding part 11 is arranged in the middle section of the whole shielding wire 2, the grounding part 11 is grounded through the grounding component, the shielding wire 2 is not cut off in the grounding operation, the performance of the shielding wire 2 for transmitting electromagnetic field signals and energy is not influenced, and the good performance of the shielding wire 2 is favorably ensured; the shielding wire grounding device is particularly suitable for high-frequency electromagnetic working conditions such as high-frequency electromagnetic field water treatment and the like; in addition, the arrangement of a plurality of grounding assemblies enables the shielding wire 2 to be fixedly connected with the grounding assemblies at a plurality of positions in the length direction, and the improvement of the wiring stability of the shielding wire 2 is facilitated.
Alternatively, the grounding clamp 6 may also be a two-half structure including a first half ring body and a second half ring body (not shown in the figure), the first half ring body and the second half ring body form the grounding clamp 6 of a whole ring, the first half ring body is welded on the grounding substrate 5, the second half ring body is connected with the first half ring body through a connector such as a screw, and the function of directly clamping and fixing the grounding portion 11 can also be realized, as long as it is ensured that the grounding clamp 6 can be directly sleeved on the grounding portion 11, the shielding wire 2 does not need to be cut off for the matching of the grounding portion 11 and the grounding clamp 6, the performance of the shielding wire 2 for transmitting electromagnetic field signals and energy is not affected, and the good performance of the shielding wire 2 is.
Of course, the grounding portion 11 at the end of the shielded wire 2 may be electrically connected to other grounding components in the prior art, for example, the grounding connection methods in the technical solutions with the publication numbers CN203967396U, CN107579360A, and CN 204030142U.
Preferably, the grounding portion 11 has a size equal to half of the size of the grounding clip 6 along the length of the shielding wire 2, which is advantageous for the grounding clip 6 to completely cover the corresponding grounding portion 11.
Alternatively, the size of the grounding clip 6 in the length direction of the shield wire 2 is 2 to 4 times the diameter of the shield wire 2, and the size of the grounding portion 11 in the length direction of the shield wire 2 is 1 to 2 times the diameter of the shield wire 2. The size of ground connection clamp 6 on 2 length direction of shielded wire can carry out specific setting according to the magnetic field intensity of shielded wire 2, and ground connection clamp 6 is big more in 2 length direction of shielded wire, is favorable to reducing the impedance of ground connection clamp 6 to the electric current leakage more, is favorable to the quick leakage of electric current in shielding layer 4 more.
Preferably, along the length direction of the shielding wire 2, the size of the omnibearing conductive foam 1 is larger than or equal to that of the grounding clamp 6. This is advantageous to ensure that the shielding layer 4 of the grounding part 11 is completely covered by the omni-directional conductive foam 1.
Preferably, the number of the grounding portions 11 and the grounding assemblies is set to three, the three grounding portions 11 are distributed along the length direction of the shielding wire 2, the three grounding portions 11 are respectively a first portion, a second portion and a third portion, the first portion and the third portion are respectively located at two end portions of the shielding wire 2, the second portion is located between the first portion and the third portion along the length direction of the shielding wire 2, and more preferably, the length of the shielding wire 2 between the second portion and the first portion is equal to the length of the shielding wire 2 between the second portion and the third portion.
Alternatively, the number of the ground portions 11 and the ground members may be two, four, five, or the like, for example, as shown in fig. 5, two ground portions 11 are provided only in the middle section of the shield wire 2, no ground portion 11 is provided at the end portion of the shield wire 2, the two ground portions 11 are respectively located at two trisections of the shield wire 2 in the longitudinal direction, and each ground portion 11 is grounded by using the omnidirectional conductive foam 1, the ground clip 6, and the ground base 5. It is needless to say that it is preferable to provide the ground portion 11 at the end of the shield wire 2 and ground the ground portion 11 at the end of the shield wire 2 by using the grounding member of the present embodiment or the conventional grounding method.
Preferably, the inner diameter of the grounding clamp 6 is slightly smaller than the diameter of the shielding wire 2, which is beneficial to prevent the grounding clamp 6 from crushing the shielding wire 2 while the grounding clamp 6 is stably and reliably connected with the grounding part 11.
An electrical device embodiment:
the electrical equipment of this embodiment can be the electrical equipment in the high frequency electromagnetic field water treatment operating mode scene, and the electrical equipment of this embodiment includes aforementioned shielded wire earthing device, and through adopting aforementioned shielded wire earthing device, the electric current in the section can be discharged fast effectively in 4 middle parts of shielding layer, is favorable to promoting shielded wire earthing device to the shielding ability of 2 electromagnetic fields of shielded wire, is favorable to reducing the electromagnetic interference of 2 electromagnetic fields of shielded wire to peripheral equipment, is favorable to peripheral equipment normal operating.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.
Claims (10)
1. The shielding wire grounding device comprises a shielding wire and a grounding component, wherein the grounding component is electrically connected with a shielding layer of the shielding wire;
the method is characterized in that:
the middle section of the shielding wire is provided with a grounding part along the length direction of the shielding wire, a shielding layer of the grounding part is exposed outside the shielding wire, and the shielding layer of the grounding part is electrically connected with the grounding component.
2. The shielded wire grounding device according to claim 1, wherein:
the grounding assembly comprises a grounding hoop and a grounding base body, the grounding hoop is fixed on the grounding base body, and the grounding hoop is clamped on the grounding portion.
3. The shielded wire grounding device according to claim 2, wherein:
the grounding clamp is welded with the grounding base body.
4. The shielded wire grounding device according to claim 2, wherein:
the ground connection clamp is for having the ring body of breach, the breach both ends of ground connection clamp are connected through the connecting piece.
5. The shielded wire grounding device according to claim 4, wherein:
the size of the grounding part in the length direction of the shielding wire is 1 to 2 times of the diameter of the shielding wire, and the size of the grounding hoop in the length direction of the shielding wire is 2 to 4 times of the diameter of the shielding wire.
6. The shielded wire grounding device according to claim 2, wherein:
the grounding assembly further comprises omnibearing conductive foam, the omnibearing conductive foam is coated on the shielding layer of the grounding portion, and the omnibearing conductive foam is extruded between the grounding hoop and the shielding layer of the grounding portion.
7. The shielded wire grounding device according to any one of claims 1 to 6, wherein:
the shielding layer of the shielding wire is provided with the grounding parts at two positions along the length direction of the shielding wire, and at least one of the grounding parts is positioned in the middle section of the shielding wire.
8. The shielded wire grounding device according to claim 7, wherein:
the end of the shielded wire has the grounding part.
9. The shielded wire grounding device according to any one of claims 1 to 6, wherein:
the ground portion is formed by removing an insulating sheath from the shield wire.
10. An electrical device, characterized in that:
comprising the shielded-wire grounding device as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288960.1A CN110867668A (en) | 2019-12-12 | 2019-12-12 | Shielded wire grounding device and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288960.1A CN110867668A (en) | 2019-12-12 | 2019-12-12 | Shielded wire grounding device and electrical equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110867668A true CN110867668A (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911288960.1A Pending CN110867668A (en) | 2019-12-12 | 2019-12-12 | Shielded wire grounding device and electrical equipment |
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| CN (1) | CN110867668A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628792A (en) * | 2021-07-22 | 2021-11-09 | 东风越野车有限公司 | Anti-electromagnetic interference method for vehicle wiring harness and anti-electromagnetic interference vehicle wiring harness |
-
2019
- 2019-12-12 CN CN201911288960.1A patent/CN110867668A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628792A (en) * | 2021-07-22 | 2021-11-09 | 东风越野车有限公司 | Anti-electromagnetic interference method for vehicle wiring harness and anti-electromagnetic interference vehicle wiring harness |
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Effective date of registration: 20230316 Address after: 518000 30D, Unit G, Building 3, Sunshine Xinjing Park, Xinniu Community, Minzhi Street, Longhua District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Weiaoda Technology Co.,Ltd. Address before: 519000 area A1, 3rd floor, front workshop, No.15, Nanping North 2nd Road, Xiangzhou District, Zhuhai City, Guangdong Province Applicant before: Zhuhai RuiZheng Technology Co.,Ltd. |