CN1470212A - Spiral hose end structure - Google Patents
Spiral hose end structure Download PDFInfo
- Publication number
- CN1470212A CN1470212A CNA031066453A CN03106645A CN1470212A CN 1470212 A CN1470212 A CN 1470212A CN A031066453 A CNA031066453 A CN A031066453A CN 03106645 A CN03106645 A CN 03106645A CN 1470212 A CN1470212 A CN 1470212A
- Authority
- CN
- China
- Prior art keywords
- corrugated hose
- flexible pipe
- conjugation tube
- spiral
- conjugation
- 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.)
- Granted
Links
- 230000021615 conjugation Effects 0.000 claims abstract description 36
- 238000010276 construction Methods 0.000 claims description 18
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Electric Vacuum Cleaner (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
An end structure of spiral flexible pipes comprises a flexible pipe equipped respectively with a spiral ridge part and a spiral flute at its inner surface and its outer surface; a conjugation tube equipped with screw threads assorted wit the ridge part and the flute of the spiral flexible pipe at its inner surface and mounted at one end of the spiral flexible pipe; as well as an inner casing tube inserted into the spiral flexible pipe at the end and used for pressing the end outwards in circumferential direction to the conjugation tube.
Description
Technical field
The present invention relates to be used for the end construction of the corrugated hose (spiral hose) of vacuum cleaner or similar device.
Background technology
Usually with the flexible pipe of flexible corrugated flexible pipe as vacuum cleaner.For example, known polyethylene or the EVA flexible pipe that the spine that is formed with spiral on interior and outer surface respectively and groove is arranged and do not use steel wire of people.Such flexible pipe is called corrugated hose.Two ends at such corrugated hose all are provided with conjugation tube, and corrugated hose is connected on vacuum cleaner main body and the operating grip.
For conjugation tube is connected on the end of corrugated hose, the inner surface that is generally conjugation tube matches with the outer surface of corrugated hose.For example, open notification number 5-103741 discloses as Japan Patent, and one has with the conjugation tube that is formed on the groove respective threads on the flexible pipe outer surface on the surface within it and is tightened onto on the end of flexible pipe, so that conjugation tube engages with flexible pipe.In addition, enter in the flexible pipe by the bonding part between flexible pipe and the conjugation tube in order to prevent air, so that the unlikely reduction of the suction capactity of vacuum cleaner, the bonding part between seal tube and the conjugation tube reliably just.For this purpose, in the engaging process of flexible pipe and conjugation tube, between the end of flexible pipe and conjugation tube, smear the adhesive such as hot-melt resin.Thereby the joint between reinforced hose and the conjugation tube, and improve sealing property.
But when using vacuum cleaner, the user so that the main body of vacuum cleaner is more close, just has stronger tensile force to act on the flexible pipe repeatedly through regular meeting's pulling flexible pipe.Therefore, flexible pipe distortion (for example becoming flat) and the conjugation tube situation from hose-off can take place.Although people once attempted a large amount of adhesive of coating on the bonding part between flexible pipe and the conjugation tube, but still can't address this problem.
Summary of the invention
An object of the present invention is to provide a kind of end construction of corrugated hose,, and improved the sealing property of this part even this end construction has bigger tensile force to be applied thereto the joint that also can keep between corrugated hose and the conjugation tube.
In order to achieve this end, according to the present invention, the end construction of a corrugated hose comprises: one has the flexible pipe of spiral spine and helical groove respectively within it with on the outer surface; One has with the screw thread of the spine of corrugated hose and groove fit and is installing to conjugation tube on the end of corrugated hose on the inner surface; And one inserted at place, this end in corrugated hose with the end with corrugated hose and circumferentially outwards be pressed in inner sleeve on the conjugation tube.
Owing in corrugated hose, inserted inner sleeve, thus the end of flexible pipe be pressed on the conjugation tube, thereby make the joint between corrugated hose and the conjugation tube become reliable.
The accompanying drawing summary
This and other purpose and feature of the present invention can become more clear from description with reference to the accompanying drawings.In these accompanying drawings:
Fig. 1 is the partial sectional view according to an end construction of corrugated hose of the present invention;
Fig. 2 is the partial side view of a corrugated hose;
Fig. 3 is the vertical sectional view of a conjugation tube;
Fig. 4 is the vertical sectional view of an inner sleeve; And
Fig. 5 is one and comprises the stereogram according to the vacuum cleaner of corrugated hose end construction of the present invention.
The specific embodiment
With reference to accompanying drawing one embodiment of the present of invention are described.
Fig. 5 shows an example that will end construction according to the present invention be used for vacuum cleaner.Two ends at a corrugated hose 2 are respectively equipped with conjugation tube 4 and 6.Conjugation tube 4 is inserted in the SS of vacuum cleaner main body, and conjugation tube 6 is connected to an extension.Fig. 2 is a partial side view of corrugated hose 2.Corrugated hose 2 is a kind of polyethylene hoses that have spiral spine and helical groove within it with outer surface respectively.Because this flexible pipe 2 does not use any steel wire, so flexible pipe 2 is flexible, even and have the people to step down on the flexible pipe 2, it also can return to original shape.
Fig. 3 will be contained in conjugation tube 4 at corrugated hose 2 one end places or 6 profile.Conjugation tube has a screw thread 5 on the surface within it, and screw thread 5 comprises groove 3 a corresponding spine and the grooves with flexible pipe 2.Fig. 4 is the profile of an inner sleeve 7.This inner sleeve 7 at one end has a flange 8, and the external diameter of inner sleeve 7 almost equates with the internal diameter of corrugated hose 2 or is a bit larger tham it.
Fig. 1 is the partial sectional view that the corrugated hose 2 of conjugation tube 4 is housed, and shows the end construction of corrugated hose 2.Conjugation tube 4 is tightened onto on the corrugated hose 2, so that the screw thread 5 of conjugation tube 4 is worked in coordination with the groove 3 of corrugated hose 2.Then, in corrugated hose 2, insert inner sleeve 7, touch the end of conjugation tube 4 until flange 8.So just formed the end construction of a corrugated hose 2.
In this end construction, inner sleeve 7 is external pressure corrugated hose 2 circumferentially, and the joint between the screw thread 5 of conjugation tube 4 and the groove 3 of flexible pipe 2 just becomes reliable.Therefore, even apply very big tensile force on corrugated hose 2, corrugated hose 2 also can not be out of shape and throw off from conjugation tube 4.Carried out the tensile strength test of an end construction.When measuring the hot strength of the comparison example do not use inner sleeve, when power is 250 newton, flexible pipe distortion and throw off from conjugation tube.On the other hand, the hot strength of above-mentioned end construction is 550 newton.In addition, need not to use adhesive, the air-tightness of this end construction is also better.
In order further to improve air-tightness, can between conjugation tube and corrugated hose, be coated with a spot of hot-melt resin.This kind corrugated hose end construction not only can be used for vacuum cleaner, and various uses can also be arranged.
Although the present invention is described with reference to above-mentioned preferred embodiment, should also be noted in that concerning those those skilled in the art that various modifications and modification all are possible.Be appreciated that such modification and modification all fall within protection scope of the present invention.
Effect of the present invention
Therefore, in the end construction that is used for connecting according to the present invention between corrugated hose and conjugation tube, hot strength can increase, and sealing property is also improved simultaneously.Therefore, this end construction is applicable to vacuum cleaner or similarly installs.
Claims (1)
1. the end construction of a corrugated hose, it comprises:
One has the flexible pipe of spiral spine and helical groove respectively within it with on the outer surface;
One has with the screw thread of the spine of corrugated hose and groove fit and is installing to conjugation tube on the end of corrugated hose on the inner surface; And
One is inserted at place, this end in corrugated hose with the end with corrugated hose and circumferentially outwards is pressed in inner sleeve on the conjugation tube.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MYPI20022778 | 2002-07-23 | ||
| MYPI20022778 | 2002-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470212A true CN1470212A (en) | 2004-01-28 |
| CN1197512C CN1197512C (en) | 2005-04-20 |
Family
ID=34192294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03106645 Expired - Fee Related CN1197512C (en) | 2002-07-23 | 2003-02-24 | Spiral hose end structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1197512C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005681A (en) * | 2018-04-07 | 2019-07-12 | 玉环胜友工具有限公司 | The connection structure of class olive-shaped symmetrical two-way tapered thread internal screw thread and conventional threads |
-
2003
- 2003-02-24 CN CN 03106645 patent/CN1197512C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005681A (en) * | 2018-04-07 | 2019-07-12 | 玉环胜友工具有限公司 | The connection structure of class olive-shaped symmetrical two-way tapered thread internal screw thread and conventional threads |
| WO2019192557A1 (en) * | 2018-04-07 | 2019-10-10 | 玉环胜友工具有限公司 | Connection structure of internal thread and traditional thread with symmetrical bidirectional conical thread having olive-like shape |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1197512C (en) | 2005-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050420 Termination date: 20180224 |