CN101111908A - Open type protective tube - Google Patents
Open type protective tube Download PDFInfo
- Publication number
- CN101111908A CN101111908A CNA2004800448629A CN200480044862A CN101111908A CN 101111908 A CN101111908 A CN 101111908A CN A2004800448629 A CNA2004800448629 A CN A2004800448629A CN 200480044862 A CN200480044862 A CN 200480044862A CN 101111908 A CN101111908 A CN 101111908A
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- ground floor
- protection tube
- film
- layer
- protective tube
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Abstract
The invention relates to an open protective tube consisting of a first layer (1) comprising a plurality of plastic threads which are woven to one another and a second layer of aluminium foil (2). The invention is characterised in that the aluminium foil layer (2) consists of a film of plastic material (3) and a film of aluminium (4). According to the invention, the plastic film (3) comprises polyester and said film is welded to the first layer (1). In this way, the invention provides excellent electromagnetic and thermal insulation, as well as excellent adhesion between the first and second layers.
Description
The present invention relates to a kind of open type protective tube, relate in particular to the machinery and the thermo-lag open type protective tube of the electric and miscellaneous part that is used for automotive field.
Background technology
Present protection tube is used for protecting electric and other parts, particularly is used in automobile industry.
These protection tubes must possess multifrequency nature and satisfy different application.
At first, protection tube must have powerful anti-machinery and heat-resisting characteristic, because they usually are used to high temperature and field easy to wear.
Secondly, protection tube must possess sound insulation characteristics, because these protection tubes that are used on the automobile are not allow to produce noise.
Once more, these protection tubes must easily be installed.
In order to solve these shortcomings, most protection tube combines these features, and by in the protection of the general cable that is used for automobile.
The very important characteristic that these protection tubes must have is high temperature resistant.These protection tubes are made up of many layers at present, and for example ground floor is formed by plastic material or the braiding of mineral material wire harness, and is second aluminum membranous layer on described ground floor.These protection tubes can be realized good anti-electromagnetism and heat-resisting.
In this case, be well known that, aluminum membranous layer pasted on the second layer with adhesive.The shortcoming that these protection tubes exist is that they can not be high temperature resistant, because owing to lack suitable adhesiveness between aluminium film and aforesaid ground floor, this adhesive can't withstand high temperatures.
Summary of the invention
The present invention has solved these shortcomings with a kind of open type protective tube, and the present invention also possesses following other advantages that will describe.
Open type protective tube of the present invention has the ground floor and second aluminium foil layer, and described ground floor comprises the plastics wire harness of a large amount of mutual braidings, it is characterized in that, described aluminium foil layer comprises plastic film and aluminium film, and described plastic film is welded on the described ground floor.
Described protection tube makes that along its length direction opening installation is very convenient.
According to preferred embodiment, described plastic material comprises polyester.
According to another embodiment, form the described line of ground floor and make by polyester or by polyester and polyesteramine mixture.
If desired, described aluminium film can be set at the inside of protection tube.
Use protection tube of the present invention can obtain well anti-electromagnetism and thermal endurance, heat-resisting quantity, the good adhesive property between the ground floor and the second layer, and very easily install.
Description of drawings
In order to understand, provided in the accompanying drawings the describing of specific embodiment, it is only as example, to the present invention without any restriction.
Fig. 1 is the cross-sectional view of a kind of protection tube of the present invention;
Fig. 2 is the anti-electro permanent magnetic experimental result curve chart of a kind of heat protective tube of the present invention.
Embodiment
Shown in accompanying drawing in, protection tube of the present invention is made up of two-layer:
-ground floor 1 is formed by a large amount of polyester wire harness or polyester and the braiding of polyesteramine mixture wire harness;
-second layer aluminium foil layer 2 is on described ground floor 1.
Welding aluminium foil layer 2 preferably carries out under 240 ℃ to 540 ℃ temperature on ground floor 1, and described welding is that continuous welding forms under the speed between 1 meter/minute to 20 meters/minute.
For example, described ground floor 1 heavily is 17.26 gram/rice, and wide is 50 millimeters, and thick is 1.0 millimeters ± 0.3 millimeter.
For example, open and protection Guan Chongwei 19.86 gram/rice of the present invention, diameter is 7 millimeters, thickness is 1.0 millimeters ± 0.3 millimeter.
The order of described level can be reversed and be arranged as aluminium foil layer inside, and braid outside.
As previously mentioned, use protection tube of the present invention, even under the condition of high temperature, also can obtain well anti-electromagnetism and heat-resistant quality.
In order to verify these advantages, protection tube of the present invention several experiments have been done.
In order to assess the anti-electro permanent magnetic of protection tube of the present invention, use the spectrum analyzer (sensitivity E-4402B) of built-in radio freqnency generator.
Two meters long wires that link to each other with described generator are as electromagnetic wave transmitter.One is parallel to described wire and the coaxial cable of about 2 centimetres shielding of being separated by, and as antenna, and links to each other with described frequency spectrograph, and described coaxial cable has the unmasked segment of 15 centimeter length.
At first, measure received power, the antenna segment of this 15 centimeter length is shielded in the protection tube (sample) of experiment after, measure received power once more.Difference between twice the power is the shielding measured value of described sample.
Must consider that most measurement carries out under minimal shielding, wanting in the real shielding ratio curve chart is strong.This is because adopted screened shielded antanna to measure, the power of reception always zero.
If transmitting power is higher, or the sensitivity of spectrum analyzer is more accurate, and then the measurement result of received power will no longer be zero under masked state, therefore, will obtain maximum masking value.
Result of experiment is presented among Fig. 2.
In order to detect heat-resisting characteristic, test.The main purpose of this experiment is to study the performance of protection tube under the externally thermal source effect.
In this case, in order to obtain reliable performance, the ambient temperature when doing experiment around the control is very important.According to temperature on every side, heat-resisting result can change.
This experiment is to carry out according to BUNDY SA01-006R4 standard, and condition is as follows:
Radiant heat source: 400 ℃
Distance: following 35 millimeters of thermal source
The size of heating cabinet: 420 millimeters * 420 millimeters * 245 millimeters
Experimental period: 1 hour
Thermocouple is described:
The internal heat galvanic couple: the position of thermocouple contacts with the outer surface of ceramic cylinder, places the mid point of described length (15 centimetres), and is used to measure the protection tube temperature inside.
Environment thermocouple: the thermocouple that is used to measure the ambient temperature in the heating cabinet.
At experimental session, all temperature all go on record.
The difference DELTA T of accounting temperature emitter temperature and protection tube internal temperature:
Δ T=emitter temperature T-internal temperature T
Experimental result is presented in the Table I, and is as follows:
Table I
| Time (minute) | Emitter temperature T (℃) | Internal temperature T (℃) | Ambient temperature T | ΔT (℃) |
| 0 | 23 | 23 | 24 | 0 |
| 2 | 129 | 64 | 78 | 65 |
| 4 | 264 | 81 | 96 | 183 |
| 6 | 291 | 77 | 87 | 214 |
| 8 | 316 | 83 | 93 | 233 |
| 10 | 329 | 87 | 98 | 242 |
| 15 | 363 | 98 | 109 | 265 |
| 20 | 384 | 105 | 119 | 279 |
| 25 | 394 | 107 | 128 | 287 |
| 30 | 396 | 109 | 130 | 287 |
| 35 | 398 | 110 | 135 | 288 |
| 40 | 400 | 109 | 139 | 291 |
| 50 | 400 | 116 | 143 | 284 |
| 60 | 400 | 118 | 152 | 282 |
Although the present invention only mentions a specific embodiment; but for a person skilled in the art; can carry out multiple improvement and modification to described protection tube, and can be equal to replacement, all not exceed the described protection range of this claim at aforesaid detailed content.
Claims (5)
1. open type protective tube; have ground floor (1) and second aluminium foil layer (2), described ground floor comprises many plastics wire harness of braiding mutually, it is characterized in that; described aluminium foil layer (2) comprises plastic film (3) and aluminium film (4), and described plastic film (3) is welded on the described ground floor (1).
2. protection tube according to claim 1 is characterized in that, described plastic film (3) is made by polyester.
3. protection tube according to claim 1 is characterized in that, forms the described wire harness of ground floor (1) and is made by polyester.
4. protection tube according to claim 1 is characterized in that, forms the described wire harness of ground floor (1) and is made by polyester and polyesteramine mixture.
5. protection tube according to claim 1 is characterized in that described aluminium film is set at the inside of protection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004800448629A CN101111908A (en) | 2004-12-02 | 2004-12-02 | Open type protective tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004800448629A CN101111908A (en) | 2004-12-02 | 2004-12-02 | Open type protective tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101111908A true CN101111908A (en) | 2008-01-23 |
Family
ID=39043121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800448629A Pending CN101111908A (en) | 2004-12-02 | 2004-12-02 | Open type protective tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101111908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821525A (en) * | 2015-04-29 | 2015-08-05 | 苏州固基电子科技有限公司 | Portable electronic bunch line combination sleeve |
-
2004
- 2004-12-02 CN CNA2004800448629A patent/CN101111908A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821525A (en) * | 2015-04-29 | 2015-08-05 | 苏州固基电子科技有限公司 | Portable electronic bunch line combination sleeve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |