CN2786842Y - Wire pulling tube for installing weak electricity signal transferred cable inside building - Google Patents
Wire pulling tube for installing weak electricity signal transferred cable inside building Download PDFInfo
- Publication number
- CN2786842Y CN2786842Y CN 200420150335 CN200420150335U CN2786842Y CN 2786842 Y CN2786842 Y CN 2786842Y CN 200420150335 CN200420150335 CN 200420150335 CN 200420150335 U CN200420150335 U CN 200420150335U CN 2786842 Y CN2786842 Y CN 2786842Y
- Authority
- CN
- China
- Prior art keywords
- metal tube
- sleeve pipe
- tube layer
- layer
- threading sleeve
- 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.)
- Expired - Fee Related
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- Insulated Conductors (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model relates to a wire threading sleeve pipe for installing cables transferring weak electricity signals in a building. Electromagnetic shielding effects are good, weak electricity signals transferred by internal electric wires and cables are ensured to be true to nature, and the utility model can not produce electromagnetic radiation to ambient environment. The utility model comprises a metal pipe layer, and the utility model is characterized in that the inner and the outer surfaces of the metal pipe layer are respectively covered by plastic layers. A metal drainage wire is arranged between the metal pipe layer and the plastic layer at the outer surface, and the drainage wire extends out of the end surface of the wire threading sleeve pipe.
Description
(1) technical field
The utility model relates to the sleeve pipe that is used to connect up, and is specially the threading sleeve pipe that is used for installing in the building cable that transmits weak electric signal.
(2) background technology
During electric wire transmission weak electric signal, the interference of signal easily is subjected to coming from the outside, the weak electric signal that is transmitted simultaneously also can produce electromagnetic radiation to surrounding environment, therefore requires the sleeve pipe of electric wire outside to have the function of electromagnetic shielding, guarantees the integrality and the accuracy of weak electric signal transmission.The existing threading sleeve pipe that is used for installing in the building cable that transmits weak electric signal; be generally pvc pipe and steel pipe; pvc pipe is because its material is plastics; do not possess conductivity; therefore the function that does not also just have electromagnetic shielding; and steel pipe is as electric conductor; because it is installed in cement constructs usually; and cement is when just having cast; moisture content is contained in its inside; steel pipe is equivalent to ground connection as electric conductor; can well play the effect of electromagnetic shielding, but the time grown, the water evaporates of cement in constructing fallen; steel pipe is equivalent to earth-free; also just can not play the effect of electromagnetic shielding, and steel pipe gets rusty easily under acidity or alkali condition, and steel pipe just loses the function of electromagnetic shielding after getting rusty; so above-mentioned two kinds of pipelines all can not guarantee the weak electric signal of its internal wire cable transmission is carried out the electromagnetic shielding protection, weak electric signal is subjected to interference from outside signals easily simultaneously also can produce electromagnetic radiation to surrounding environment.
(3) summary of the invention
At the existing threading sleeve pipe that is used for installing in the building cable that transmits weak electric signal; all can not guarantee shortcoming to the weak electric signal electromagnetic shielding protection of its internal wire cable transmission; the utility model provides another to be used for installing in the building threading sleeve pipe of the cable that transmits weak electric signal; its effectiveness is good, guarantees weak electric signal true to nature of its internal wire cable transmission.
Its technical scheme is such: it comprises the metal tube layer, it is characterized in that: the inner surface of described metal tube layer, outer surface are coated with plastic layer respectively, be provided with the metal drain wire between the plastic layer of described metal tube layer and its outer surface, described drain wire stretches out the end face of described threading sleeve pipe.
It is further characterized in that: described metal drain wire is along the axial distribution of described metal tube layer; The material of described metal tube layer is a copper; The material of described metal tube layer is an aluminium; The material of described metal tube layer is an iron; The material of described metal tube layer is a steel.
When the utility model is used for engineering, drain wire is passed ground connection behind the structures of cement, the whether dry electro-magnetic screen function that can not have influence on the metal tube layer of cement like this, and the inner surface of metal tube layer, outer surface are coated with plastic layer respectively, can prevent that metal tube from getting rusty under acidity or alkaline environment, internal layer, outer field plastic layer can be guaranteed the effectiveness of metal tube layer.
(4) description of drawings
Fig. 1 is structural representation of the present utility model and partial sectional view;
Fig. 2 is the left view of Fig. 1.
(5) embodiment
See Fig. 1, Fig. 2, the utility model comprises metal tube layer 3, the inner surface of metal tube layer 3, outer surface is coated with plastic layer 4 respectively, 1, be provided with metal drain wire 2 between the plastic layer 1 of metal tube layer 3 and its outer surface, drain wire 2 stretches out the end face of described threading sleeve pipe, and (Fig. 1 is for clear pipe layer of expressing the threading sleeve pipe, with drain wire 2, metal tube layer 3, outer plastic layer 1 is blocked a part successively, inner plastic layer 4 in actual the use, metal level 3, the end face of outer plastic layer 1 is mutually concordant), metal drain wire 2 is along the axial distribution of metal tube layer 3, can certainly be shape of threads and be wound in the metal tube layer, guarantee that each section Guan Jun has drain wire as long as cut out when transfixing thread casing as required; The material of metal tube layer is copper, aluminium, iron or is steel, can certainly be other material, has the function of electromagnetic shielding as long as guarantee the metal tube layer.Metal tube is made in processing during the utility model earlier, then drain wire is attached to the surface of metal tube, by extrusion molding plastic covered is guaranteed fully contacting of drain wire and metal tube layer in the surfaces externally and internally of metal tube.
Claims (6)
1. be used for installing in the building threading sleeve pipe of the cable that transmits weak electric signal, it comprises the metal tube layer, it is characterized in that: the inner surface of described metal tube layer, outer surface are coated with plastic layer respectively, be provided with the metal drain wire between the plastic layer of described metal tube layer and its outer surface, described drain wire stretches out the end face of described threading sleeve pipe.
2. threading sleeve pipe according to claim 1 is characterized in that: described metal drain wire is along the axial distribution of described metal tube layer.
3. threading sleeve pipe according to claim 1 is characterized in that: the material of described metal tube layer is a copper.
4. threading sleeve pipe according to claim 1 is characterized in that: the material of described metal tube layer is an aluminium.
5. threading sleeve pipe according to claim 1 is characterized in that: the material of described metal tube layer is an iron.
6. threading sleeve pipe according to claim 1 is characterized in that: the material of described metal tube layer is a steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150335 CN2786842Y (en) | 2004-07-30 | 2004-07-30 | Wire pulling tube for installing weak electricity signal transferred cable inside building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150335 CN2786842Y (en) | 2004-07-30 | 2004-07-30 | Wire pulling tube for installing weak electricity signal transferred cable inside building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786842Y true CN2786842Y (en) | 2006-06-07 |
Family
ID=36775404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150335 Expired - Fee Related CN2786842Y (en) | 2004-07-30 | 2004-07-30 | Wire pulling tube for installing weak electricity signal transferred cable inside building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786842Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684780A (en) * | 2016-12-30 | 2017-05-17 | 深圳市名雕装饰股份有限公司 | PVC (polyvinyl chloride) aluminum-plastic composite flame-retardant shielded electrical casing and manufacture apparatus |
-
2004
- 2004-07-30 CN CN 200420150335 patent/CN2786842Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684780A (en) * | 2016-12-30 | 2017-05-17 | 深圳市名雕装饰股份有限公司 | PVC (polyvinyl chloride) aluminum-plastic composite flame-retardant shielded electrical casing and manufacture apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |