CN209313034U - A kind of double wall heat draw for terminal ends and sealing - Google Patents
A kind of double wall heat draw for terminal ends and sealing Download PDFInfo
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- CN209313034U CN209313034U CN201920104127.6U CN201920104127U CN209313034U CN 209313034 U CN209313034 U CN 209313034U CN 201920104127 U CN201920104127 U CN 201920104127U CN 209313034 U CN209313034 U CN 209313034U
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- harness
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- terminal ends
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Abstract
The utility model provides a kind of double wall heat draw for terminal ends and sealing, it include: harness, inner wall, outer wall and terminal, the terminal sleeve is mounted in one end of harness, the material of the outer wall is radiation crosslinking flame-retardant polyolefin pipe, the material of the inner wall is butyl hot-melt glue, butyl hot-melt glue is spread into the outer wall painting of the harness, then radiation crosslinking flame-retardant polyolefin pipe is put on, by particular manufacturing craft by harness, inner wall, outer wall and terminal are in the same time, it is crimped together under same temperature environment, make harness, inner wall, outer wall and terminal are integrally formed, up to 135 DEG C or so of junction temperature resistant grade with automotive wire bundle and terminal, guarantee using temperature in the case where 150 DEG C of > work long hours, double-wall pipe pyrocondensation, which is used, guarantees non-displacement and disengagement phenomenon on automotive wire bundle, or glue does not occur teardrop shaped drip Effect.
Description
Technical field
The utility model belongs to automobile zero curve beam field, in particular to a kind of double-walled pyrocondensation for terminal ends and sealing
Pipe.
Background technique
Automotive wire bundle is the network principal of automobile circuit, and automobile circuit is also just not present without harness.Harness refers to by copper
After contact terminal (connector) made of material punching is crimped with wire and cable, outside plastic compression insulator or added metal shell again
Deng, tied up with harness to be formed connection circuit component.Harness industrial chain includes wire and cable, connector, process equipment, harness system
Make with downstream application industry, harness is very widely used, can be used in automobile, household electrical appliance, computer and communication apparatus, various electricity
Sub- instrument and meter etc., body harness connect entire vehicle body, and general shape is H-shaped.There are many double wall heat draw currently on the market,
Outer wall is typically all radiation crosslinking flame-retardant polyolefin, and inner wall is typically all modified PA based melt adhesive and EVA based melt adhesive.Heatproof etc.
Up to 135 DEG C or so of grade, to use temperature in the case where 150 DEG C of > work long hours, double-wall pipe pyrocondensation is used on automotive wire bundle
Guarantee that non-displacement and disengagement phenomenon or glue do not occur teardrop shaped drip, currently on the market not yet.And exactly this performance
Double-wall pipe has demand on the new model that truck producer develops.
Utility model content
The purpose of this utility model is that solution automotive wire bundle is low with the junction temperature resistant grade of terminal, using temperature in >
150 DEG C work long hours down, and double-wall pipe pyrocondensation, which is used on automotive wire bundle, to be had displacement and disengage phenomenon, and teardrop shaped easily occurs in glue
The technical issues of drip, provides a kind of double wall heat draw for terminal ends and sealing, with automotive wire bundle and terminal
Up to 135 DEG C or so of junction temperature resistant grade, guarantee using temperature in the case where 150 DEG C of > work long hours, double-wall pipe pyrocondensation
It uses and guarantees that non-displacement and disengagement phenomenon or glue do not occur the effect of teardrop shaped drip on automotive wire bundle.
Technical solution provided by the utility model are as follows:
A kind of double wall heat draw for terminal ends and sealing, comprising: harness, inner wall, outer wall and terminal, the terminal
It is sleeved on one end of harness, the material of the outer wall is radiation crosslinking flame-retardant polyolefin pipe, and the material of the inner wall is butyl heat
The outer wall painting of the harness is spread butyl hot-melt glue, then puts on radiation crosslinking flame-retardant polyolefin pipe, pass through die for special purpose by melten gel
Harness, inner wall, outer wall and terminal are crimped together by tool under same time, same temperature environment, are made harness, inner wall, outer
Wall and terminal are integrally formed.
Preferably, the material of the harness is copper wire.
Preferably, the material of the harness is aluminum steel.
Preferably, the material of the terminal is copper.
Preferably, the material of the terminal is iron.
The beneficial effects of the utility model embody in the following areas:
1, up to 135 DEG C or so of the junction temperature resistant grade of automotive wire bundle and terminal；
2, using temperature, in the case where 150 DEG C of > work long hours, double-wall pipe pyrocondensation, which is used, guarantees non-displacement on automotive wire bundle
Do not occur teardrop shaped drip with disengagement phenomenon or glue；
3, harness and inner wall, outer wall and terminal are extruded into together, can not be removed.
Detailed description of the invention
Fig. 1 is the main sectional view of the utility model.
Fig. 2 is the sectional view of the utility model.
In figure: 1 harness, 2 inner walls, 3 outer walls, 4 terminals.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
As depicted in figs. 1 and 2, the utility model provides a kind of double wall heat draw for terminal ends and sealing, packet
Include: harness 1, inner wall 2, outer wall 3 and terminal 4, the terminal 4 are sleeved on one end of harness 1, and the material of the outer wall 3 is radiation
Cross-linking flame-retardant polyolefin pipe, the material of the inner wall 2 are butyl hot-melt glue, and butyl hot-melt is spread in the outer wall painting of the harness 2
Then glue puts on radiation crosslinking flame-retardant polyolefin pipe, by particular manufacturing craft by one end (right end i.e. shown in FIG. 1) of harness 1, interior
Wall 2, outer wall 3 and terminal 4 are crimped together under same time, same temperature environment, are made harness 1, inner wall 2, outer wall 3 and end
Son 4 is integrally formed.
What double-wall pipe was made of two layers of walls as its name suggests, one layer of outer wall 3, one layer of inner wall 2, the processing of general double-wall pipe,
Due to consideration that the rejection rate problem in processing, takes first extrusion outer wall 3, the technique of rear gluing, the glue applied afterwards is exactly inner wall
2, first squeeze out outer wall 3 purpose be: if squeeze out wall thickness uneven distribution (inclined wall), bore be coarse and fine (ring dress), sandstone,
There is the unqualified phenomenon such as impurity, can crush and squeeze out again, rejection rate is low, and then glue (i.e. inner wall 2) is sprayed with second operation work
Up, but this technique requires the fusion point of glue, what the fusion point of glue was shunk no more than heat-shrink tube (i.e. outer wall 3)
Temperature, if it exceeds the temperature that heat-shrink tube is shunk, can be such that outer wall 3 shrinks, product is unqualified in this procedure of rear gluing.
Using the double wall heat draw of rear gluing mode, due to secondary synthesis, hot glue will be attached to cool heat-shrink tube after thawing
On outer wall, it is easy to which inside and outside wall is detached from, and cries " falling trousers " in the industry, once inside and outside wall is detached from, outer wall 3 can be gone out due to vehicle vibration
It now shifts, wire bond only with glue is exposed after displacement, since glue has fillibility and trickling property, raised metallic contact can be outer
Dew causes to leak electricity, forge iron, ablation, the risks such as on fire, and vehicle fire, which has in part because of this failure, to be caused, but due to vehicle
Ablation it is changed beyond recognition, be not easy to be found substantially, but both at home and abroad expert focus on very much this point.
If the materials'use butyl hot-melt glue of the inner wall 2 of heat-shrink tube, the melting temperature of butyl hot-melt glue have been over
The shrinkage temperature of pyrocondensation pipe outer wall 3, so the technique of gluing after original extrusion outer wall 3 cannot be used.
Co-extrusion technology will be used, co-extrusion technology is exactly that outer wall 3 and inner wall 2 squeeze out jointly, is flowed with a special co-extrusion three
Road head is sent jointly, wherein three runner heads, one runner be air flow channel because double-wall pipe is tubing, centre be it is hollow,
So must there are air flow channels；Two runners are inner wall butyl rubber runner, and three runners are outer wall runner.
This three runner head of co-extrusion to together, can not remove two kinds of material co-extrusions.Can not exactly remove this
Feature, it is very high to will lead to inside and outside wall peel strength, can not remove at all, because it is under same time, same temperature environment
It squeezes out, is integrally formed jointly, this point is exactly the performance that domestic and international expert values very much.
Double wall heat draw is made of materials at two layers, and outer wall 3 is radiation crosslinking flame-retardant polyolefin, and inner wall 2 is butyl hot-melt
Glue.Using temperature in the case where 150 DEG C of > work long hours, this double-wall pipe pyrocondensation uses non-displacement on automotive wire bundle and disengages phenomenon,
Be not in teardrop shaped drip, catered to the demand on the new model of vapour liberation exploitation.
The utility model, in the case where 150 DEG C of > work long hours, is using non-displacement and disengagement on automotive wire bundle using temperature
Phenomenon is not in teardrop shaped drip.
With the development of Chinese Automobile Industry ', African country is exported to now with many commercial vehicles, such as: A Er and benefit
The countries such as Asia, Ethiopia, Zambia, all in torrid areas, temperature is very high for these countries, especially in engine, row
The hot source temperature such as tracheae can be higher, and the heat-shrink tube that automotive wire bundle uses drops down glue in this high-temperature region pole meaning, and automotive wire bundle uses
The effect of heat-shrink tube be exactly to play sealing function, so that the contact of electric wire or connector is not intake, oil, dirty, air.Purpose has been exactly
It trickles out to air-tightness and watertightness, such as pectin, just out of the question air-tightness and watertightness, the contact or connector of harness are easy to
Water inlet, oil, dirty, air, make contact or the risks such as joint oxidation, fever, ablation, on fire.
The glue of the inner wall 2 of present automobile double wall heat draw uses butyl hot-melt glue, in use temperature when 150 DEG C of > long
Between work down, double-wall pipe will not gummosis, not will lead to vehicle contact or the risks such as joint oxidation, fever, ablation, on fire.
The material of the harness 1 is copper wire or aluminum steel, and the strand material overwhelming majority domestic at present is copper wire or aluminum steel,
The material of the terminal is copper, iron or aluminium, and the terminal material of most domestic is copper, iron either aluminium, copper, aluminium compared with
Soft, compressible molding is also easy for the extruding of harness 1, inner wall 2, outer wall 3 and terminal 4 to be integrally formed, general iron terminal is come
It says, can also squeeze integral, that is to say, that the utility model is adapted to most of harness；
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization.It can be applied to various fields suitable for the present invention completely.For those skilled in the art,
Other modifications may be easily implemented.Therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (5)
1. a kind of double wall heat draw for terminal ends and sealing characterized by comprising harness, inner wall, outer wall and end
Son, the terminal sleeve are mounted in one end of harness, and the material of the outer wall is radiation crosslinking flame-retardant polyolefin pipe, the material of the inner wall
Matter is butyl hot-melt glue, and butyl hot-melt glue is spread in the outer wall painting of the harness, then puts on radiation crosslinking flame-retardant polyolefin pipe,
Harness, inner wall, outer wall and terminal are crimped together under same time, same temperature environment by particular manufacturing craft, made line
Beam, inner wall, outer wall and terminal are integrally formed.
2. a kind of double wall heat draw for terminal ends and sealing according to claim 1, which is characterized in that the line
The material of beam is copper wire.
3. a kind of double wall heat draw for terminal ends and sealing according to claim 2, which is characterized in that the line
The material of beam is aluminum steel.
4. a kind of double wall heat draw for terminal ends and sealing according to claim 3, which is characterized in that the end
The material of son is copper.
5. a kind of double wall heat draw for terminal ends and sealing according to claim 4, which is characterized in that the end
The material of son is iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920104127.6U CN209313034U (en) | 2019-01-22 | 2019-01-22 | A kind of double wall heat draw for terminal ends and sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920104127.6U CN209313034U (en) | 2019-01-22 | 2019-01-22 | A kind of double wall heat draw for terminal ends and sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209313034U true CN209313034U (en) | 2019-08-27 |
Family
ID=67681199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920104127.6U Active CN209313034U (en) | 2019-01-22 | 2019-01-22 | A kind of double wall heat draw for terminal ends and sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209313034U (en) |
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2019
- 2019-01-22 CN CN201920104127.6U patent/CN209313034U/en active Active
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