WO2016045230A2

WO2016045230A2 - Automatically extending and expanding water pipe of extended service life

Info

Publication number: WO2016045230A2
Application number: PCT/CN2015/000551
Authority: WO
Inventors: 戴松林
Original assignee: 浙江海伦塑胶有限公司
Priority date: 2014-09-24
Filing date: 2015-08-03
Publication date: 2016-03-31
Also published as: CN204083552U; WO2016045230A3

Abstract

The present utility model relates to the technical field of water pipes and specifically to an automatically extending and expanding water pipe of an extended service life, comprising an inner pipe. A wear-resistant pipe is sleeved on the exterior of the inner pipe. A pressure-resistant fabric pipe is then sleeved on the exterior of the wear-resistant pipe. The wear-resistant pipe is arranged between the inner pipe and the pressure-resistant fabric pipe. Both extremities of the inner pipe, of the wear-resistant pipe, and of the pressure-resistant fabric pipe are respectively fixed on connectors. The inner pipe, the wear-resistant pipe, and the pressure-resistant fabric pipe of the present utility model can expand radially and extend axially, and the addition of the wear-resistant pipe can reduce the friction between the inner pipe and the inner wall of the pressure-resistant fabric pipe, thus preventing the inner pipe from being worn easily and extending service life; this is applicable in carwash and flower watering scenarios.

Description

Automatic telescopic expansion pipe with longer service life

Technical field:

The utility model belongs to the technical field of water pipes, and particularly relates to an automatic telescopic expansion water pipe with a longer service life.

Background technique:

In some occasions, such as watering flowers and car washing, in the process of watering and cleaning, due to the need of a certain length, a longer length of water pipes should be prepared to ensure smooth watering and cleaning work. At present, water pipes for watering and cleaning are not stretchable, and PVC plastic pipes are generally used. A long pile of water pipes on the ground can easily lead to messy scenes, easier knotting, and people who are easily tripped over, posing a safety hazard. Moreover, due to being trampled, the service life of the water pipe is short. Moreover, the connection between the water pipe and the water source and the nozzle is also inconvenient. In order to improve this phenomenon, an automatic telescopic expansion tube has been developed. Since the inner tube and the outer tube of the automatic telescopic expansion tube are subjected to axial expansion and radial expansion, high-strength friction is generated between the inner tube and the outer tube during the expansion and contraction process, which causes the inner tube to be easily worn and broken, so the ordinary automatic expansion and contraction Expanded water pipes have serious structural defects that do not last long.

Summary of the invention:

The purpose of the utility model is to provide an automatic telescopic expansion water pipe with long service life, simple operation and convenient long service life.

The utility model is realized as follows:

The utility model relates to an automatic telescopic expansion water pipe with longer service life, which comprises an inner tube, a wear-resistant tube is arranged on the inner tube jacket, and a pressure-resistant cloth tube is arranged outside the wear-resistant tube, and the wear-resistant tube is located in the inner tube and the anti-pressure cloth tube. Between the two ends of the inner tube, the wear-resistant tube and the anti-pressure cloth tube are respectively fixed on the joint;

Or a wear-resistant tube is respectively disposed at two ends of the inner tube, and the two wear-resistant tubes are located between the inner tube and the anti-pressure cloth tube, the inner tube, the two ends of the anti-pressure cloth tube, and the two wear-resistant tubes The end is attached to the joint.

The above joint is composed of a main body having a middle hole, a plurality of openings are uniformly distributed in the upper portion of the main body, elastic teeth are arranged in the opening, and a casing is arranged on the upper portion of the main body, and a casing is disposed between the main body and the outer casing. a return spring for controlling the resetting of the outer casing, wherein the outer casing moves up and down in the axial direction of the main body to control the loosening and clamping of the elastic engaging teeth, and the lower part of the main body is provided with a screwing portion and a plugging portion, and a screwing portion and The insertion portion is provided with a through hole communicating with the hole in the main body and coaxially, and the fastening cap is disposed outside the insertion portion and screwed to the screw portion;

The two ends of the inner tube, the wear-resistant tube and the anti-pressure cloth tube are respectively arranged outside the corresponding plug-in parts;

Or the inner tube, the two ends of the anti-pressure cloth tube and the outer ends of the two wear-resistant tubes are set outside the corresponding plug-in portion;

The anti-pressure cloth tube is provided with a locking sleeve outside, the fastening cap is set outside the locking sleeve and screwed on the screwing portion, the fastening cap and the locking sleeve are the inner tube, the wear-resistant tube and the anti-pressure cloth. The respective ends of the tubes are fixed outside the plug.

The upper end of the main body is provided with a first annular convex edge, and the middle portion is provided with a second annular convex edge and a third annular convex edge from top to bottom. The diameter of the second annular convex edge is < the inner diameter of the outer casing, and the third annular shape The diameter of the rim is > the inner diameter of the outer casing, and the distance between the second annular rim and the third annular rim is the maximum stroke of the outer casing.

The outer casing is a middle portion of the inner wall of the hollow cylinder, and a plurality of circumferentially arranged arcuate projections are circumferentially disposed. The upper ends of the arcuate projections are provided with convex teeth, and the inner diameter of the convex teeth is <first annular convex edge The outer diameter is provided with a return spring on the main body casing, one end of the return spring is pressed against the bottom plane of the arcuate projection, and the other end is pressed against the upper plane of the third annular flange, and the outer casing is at the first annular convex edge The axial up and down movement between the third annular flanges controls the loosening and clamping of the elastic teeth.

The water hole of the through hole of the screwing portion and the insertion portion is provided in the middle hole of the main body, and one end of the water stop rod protrudes beyond the insertion portion.

The above water stop rod is: a cross-shaped tail portion is provided at one end of the rod portion, the cross shape of the cross shape is larger than the diameter of the through hole of the plug portion, and the other end of the rod portion is provided with a cylindrical head portion at the head An annular groove is disposed on the annular groove, and an O-ring is disposed in the annular groove, and the diameter of the sealing ring is larger than the diameter of the through hole of the insertion portion.

The above locking sleeve is formed by pressing a metal or plastic sleeve around the tube.

The outstanding advantages of the utility model over the prior art are:

1. The inner tube, the wear-resistant tube and the anti-pressure cloth tube of the utility model can be radially expanded and axially expanded and contracted, and the wear-resistant tube can be added to reduce the friction between the inner tube and the inner wall of the anti-pressure tube, and the inner tube is prevented from being Easy to wear and extend the service life;

2. The inner tube of the utility model can be provided with one layer or more, and the expansion diameter is 2-3 times of the original diameter, and the flow rate can be increased during the water passing process;

3. The utility model is provided with a quick connector for connection with a spray gun, a faucet, etc., and requires no additional tools for disassembly and assembly, and is convenient to use.

BRIEF DESCRIPTION OF THE DRAWINGS:

1 is a schematic structural view of Embodiment 1;

Figure 2 is an enlarged schematic view of a portion A of Figure 1;

Figure 3 is a schematic view of one end of Embodiment 1;

Figure 4 is a schematic partial cross-sectional view showing the inner tube, the wear-resistant tube, and the pressure-resistant cloth tube of the first embodiment;

Figure 5 is a schematic view of the joint of the embodiment 1;

Figure 6 is a second schematic view of the joint of the first embodiment;

Figure 7 is a schematic cross-sectional view of the joint of Example 1;

8 is a schematic view of the main body, the screwing portion, and the plug portion of the first embodiment;

Figure 9 is a schematic view of the outer casing of the first embodiment;

Figure 10 is a schematic view of the water stop rod of Embodiment 1;

Figure 11 is a schematic partial cross-sectional view showing the two wear tubes of the second embodiment disposed outside the inner tube and the pressure resistant tube.

detailed description:

The present invention will be further described below by way of specific embodiments.

Example 1: See Figure 1-10:

The utility model relates to an automatic telescopic expansion water pipe with longer service life, which comprises an inner pipe 1 , a inner casing 1 is provided with a wear-resistant pipe 2, and a wear-resistant pipe 3 is arranged outside the wear-resistant pipe 2, and the wear-resistant pipe 2 is located inside. Between the tube 1 and the anti-pressure cloth tube 3, the inner tube 1, the wear-resistant tube 2 and the two ends of the anti-pressure cloth tube 3 are respectively fixed on the joint 4; the wear-resistant tube 2 is generally a transparent plastic sleeve tube. The wear-resistant tube 2 can reduce the friction between the inner tube 1 and the inner wall of the pressure-resistant cloth tube 3, preventing the inner tube 1 from being easily worn and prolonging the service life.

The joint 4 is composed of a main body 6 including a middle hole 5, and a plurality of openings 7 are uniformly distributed in the upper portion of the main body 6, and elastic teeth 8 are provided in the opening 7, and an outer casing is provided on the upper portion of the main body 6. 9. A return spring 10 for controlling the reset of the outer casing 9 is disposed between the main body 6 and the outer casing 9. The outer casing 9 moves up and down in the axial direction of the main body 6 to control the loosening and clamping of the elastic engaging teeth 8, the lower portion of the main body 6. The screwing portion 11 and the plug portion 12 are disposed in sequence on the coaxial line. The screwing portion 11 and the plug portion 12 are provided with through

holes

13 and 14 communicating with the hole 5 in the main body and coaxially, and the fastening cap 15 is disposed. Outside the plug portion 12 and screwed to the screw portion 11;

The two ends of the inner tube 1, the wear-resistant tube 2 and the anti-pressure cloth tube 3 are respectively set outside the corresponding plug-in portions 12, and the compression-proof sleeves on both ends of the cloth tube 3 are provided with a locking sleeve and a fastening cap. 15 is set outside the locking sleeve and screwed onto the screwing portion 11, and the fastening cap 15 and the locking sleeve fix the corresponding end of the inner tube 1, the wear-resistant tube 2, and the anti-pressure cloth tube 3 It is fixed outside the plug portion 12. The locking sleeve is formed by pressing a metal sleeve or a plastic sleeve 16 against the pressure-resistant cloth tube 3.

The upper end of the main body 6 is provided with a first annular flange 17 and the middle portion is provided with a second annular flange 18 and a third annular flange 19 from top to bottom. The diameter of the second annular flange 18 <the outer casing 9 The inner diameter, the diameter of the third annular ledge 19 > the inner diameter of the outer casing 9, the distance between the second annular ledge 18 and the third annular ledge 19 is the maximum stroke of the outer casing 9.

The outer casing 9 is a middle portion of the inner wall of the hollow cylinder, and a plurality of circumferentially disposed arcuate projections 20 are circumferentially disposed. The upper ends of the arcuate projections 20 are provided with convex teeth 21, and the inner diameter of the convex teeth 21 is determined. An outer diameter of an annular flange 17 is provided on the main body 6 with a return spring 10, one end of the return spring 10 is pressed against the bottom plane of the arcuate projection 20, and the other end is pressed against the third annular flange 19. In the plane, the outer casing 9 moves axially up and down between the first annular flange 17 and the third annular flange 19 to control the loosening and clamping of the elastic teeth 8.

The water hole rod 22 penetrating through the screwing portion 11 and the through

holes

13 and 14 of the plug portion 12 is provided in the center hole 5 of the main body 6, and one end of the water stop rod 22 protrudes beyond the plug portion 12.

The above-described water stop rod 22 is provided with a cross-shaped tail portion 24 at one end of the rod portion 23, the cross-shaped tail portion 24 having a larger size than the diameter of the through hole 14 of the plug portion 12, and the other end of the rod portion 23 being provided with a cylindrical shape The head portion 25 is provided with an annular groove on the head portion 25, and an O-ring 26 is provided in the annular groove. The diameter of the sealing ring 26 is larger than the diameter of the insertion portion through hole 14.

The inner tube 1 described above is a latex tube or a silicone tube or a TPE tube or a TPR tube.

The above latex tube is formed of one or more layers of latex.

The above silicone tube is formed of one or more layers of silica gel.

The above TPR tube is formed of one or more layers of latex.

The above TPE tube is formed of one or more layers of silica gel.

The above-mentioned pressure-resistant cloth pipe 3 is a polyester cloth tube or a polypropylene cloth tube or a nylon cloth tube.

Example 2: See Figure 11:

This embodiment has the same basic structure as that of Embodiment 1, and the difference is:

The wear-resistant tube 2 is provided with two, two wear-resistant tubes 2 are respectively set at two ends of the inner tube 1, and the wear-resistant tube 2 is located between the inner tube 1 and the pressure-resistant outer tube 3. The inner tube 1, the two ends of the anti-pressure cloth tube 3, and the outer ends of the two wear-resistant tubes 2 are fixedly connected to the joint. The wear-resistant tube 2 can reduce the friction between the inner tube 1 and the inner wall of the anti-pressure cloth tube 3, prevent the inner tube from being worn, and prolong the service life.

The quick joint of the utility model can be connected with the spray gun, the faucet, etc., and the utility model has the advantages of simple and convenient use, the water pipe can be automatically extended within a certain length range, and can be recovered after use, and is suitable for liquid transportation, such as washing and watering.

The above embodiments are only one of the preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, equivalent changes made by the shapes, structures, and principles of the present invention should be covered. Within the scope of protection of the present invention.

Claims

The utility model relates to an automatic telescopic expansion water pipe with longer service life, which comprises an inner tube, which is characterized in that: the inner tube jacket is provided with a wear-resistant tube, and the anti-pressure cloth tube is arranged outside the wear-resistant tube, and the wear-resistant tube is located in the inner tube and Between the pressure-resistant cloth pipes, the two ends of the inner pipe, the wear-resistant pipe and the anti-pressure pipe are respectively fixed on the joint;

Or a wear-resistant tube is respectively disposed at two ends of the inner tube, and the two wear-resistant tubes are located between the inner tube and the anti-pressure cloth tube, the inner tube, the two ends of the anti-pressure cloth tube, and the two wear-resistant tubes The end is attached to the joint.
A self-expanding expansion water pipe with a longer service life according to claim 1, wherein the joint comprises: a main body having a middle hole, and a plurality of openings are uniformly distributed in the upper portion of the main body at the opening. The elastic tooth is disposed therein, and the outer casing of the main body is provided with a casing, and a return spring for controlling the reset of the outer casing is disposed between the main body and the outer casing, and the outer casing moves up and down in the axial direction of the main body to control the loosening and clamping of the elastic tooth. The lower part of the main body is provided with a screwing portion and a plug portion coaxially, and the screwing portion and the plug portion are provided with a through hole communicating with the hole in the main body and coaxially, and the fastening cap is disposed at the plugging. Externally and screwed to the screw joint;

The two ends of the inner tube, the wear-resistant tube and the anti-pressure cloth tube are respectively arranged outside the corresponding plug-in parts;

Or the inner tube, the two ends of the anti-pressure cloth tube and the outer ends of the two wear-resistant tubes are set outside the corresponding plug-in portion;

The anti-pressure cloth tube is provided with a locking sleeve outside, the fastening cap is set outside the locking sleeve and screwed on the screwing portion, the fastening cap and the locking sleeve are the inner tube, the wear-resistant tube and the anti-pressure cloth. The respective ends of the tubes are fixed outside the plug.
The self-expanding expansion water pipe of a longer service life according to claim 2, wherein the upper end of the main body is provided with a first annular convex edge, and the middle portion is provided with a second annular convex edge from top to bottom. And a third annular flange, the diameter of the second annular flange <the inner diameter of the outer casing, the diameter of the third annular flange> the inner diameter of the outer casing, and the distance between the second annular convex edge and the third annular convex edge is the outer casing The maximum itinerary.
A self-expanding expansion water pipe with a longer service life according to claim 2, wherein the outer casing is provided with a plurality of circumferentially arranged arcuate projections in a circumferentially upper middle portion of the inner wall of the hollow cylinder. The upper end of the curved protrusion is provided with a convex tooth, the inner diameter of the convex tooth is <the outer diameter of the first annular flange, and the main body casing is provided with a return spring, and one end of the return spring is pressed against the bottom plane of the curved protrusion. The other end is tightened on the upper plane of the third annular flange, and the outer casing axially moves up and down between the first annular flange and the third annular flange to control the loosening and clamping of the elastic teeth.
The automatic expansion and contraction water pipe with a longer service life according to claim 2 or 3, wherein a water stop rod penetrating through the screwing portion and the through hole of the plug portion is disposed in the middle hole of the main body One end of the water stop rod extends beyond the plug portion.
A self-expanding expansion water pipe with a longer service life according to claim 5, wherein the water stop rod is provided with a cross-shaped tail portion at one end of the rod portion, and the cross-shaped tail portion is larger than the plug. The diameter of the through hole of the joint, the other end of the rod portion is provided with a cylindrical head, an annular groove is arranged on the head, and an O-ring is arranged in the annular groove, and the diameter of the sealing ring is larger than the plug The diameter of the through hole.
The automatic telescopic expansion water pipe with longer service life according to claim 2, wherein the locking sleeve is formed by pressing a metal sleeve or a plastic sleeve around the cloth tube.