TWM469410U - Tube expansion apparatus - Google Patents

Description

Telescopic water pipe

This creation is about a technical field of water pipes, in particular a telescopic water pipe device that can automatically extend the length by the pressure of the water source.

The conventional telescopic water pipe structure comprises an outer pipe of an outer casing and an elastic inner pipe, which are combined by different elastic coefficients. When the elastic inner tube is supported by the water source pressure, the elastic inner tube is radially expanded and axially extended, thereby increasing the overall length of the telescopic water pipe.

However, the structure of the telescopic water pipe has a length shorter than that of the outer pipe. Therefore, when the elastic inner pipe is not extended, the outer pipe is pulled by the elastic inner pipe to form wrinkles on the outer surface, in addition to affecting the overall appearance, and Will interfere with the reel of the reel. Furthermore, the radial expansion of the elastic inner tube cannot be uniformly maintained along the entire elastic inner tube, so that the pressure is large, the tube wall is easily formed to be too thin and broken.

In order to avoid this situation, the water source pressure can only be reduced, but instead the axial expansion and contraction amount of the elastic inner tube is limited, so that the length of the overall expansion and contraction of the water pipe is reduced.

In view of the above problems and deficiencies in the prior art, the main purpose of the present invention is to provide a telescopic water pipe device by limiting the radial expansion of the inner tube. The amount of expansion, while concentrated in the axial direction, to avoid the inner tube due to radial expansion, the tube wall is too thin, and can obtain a longer axial elongation. In addition, the structure in which the inner and outer tubes have the same length causes the outer tube surface to not wrinkle when the inner tube contracts.

According to the above object of the present creation, a telescopic water pipe device is proposed. It comprises an inner tube and an outer tube. Wherein, the inner tube has elasticity which is expandable and expandable. The outer tube is a braid coated on the outer surface of the inner tube, and has only elastic elasticity in the axial direction, and the inner tube has the same length as the outer tube. By the composition of the above-mentioned members, the outer tube surface does not wrinkle when the inner tube contracts, and when the inner tube is expanded and extended by the pressure of the water source, the radial expansion of the inner tube is restrained by the outer tube, so that the expansion and contraction can only be performed. The concentration concentrates toward the axial expansion and elongation, thereby achieving the length of the extension pipe. In addition to being convenient for the user, the utility model can withstand a large water source pressure and provide a long expansion and contraction distance, thereby avoiding the inner tube being caused by the radial expansion and contraction. The wall is missing from the thin rupture.

10‧‧‧ Telescopic water pipe installation

12‧‧‧Inside

14‧‧‧External management

16‧‧‧ Connection unit

18‧‧‧ Ribs

20‧‧‧ warp yarn

22‧‧‧ Weft

24‧‧‧ Sockets

26‧‧‧ Lower case

28‧‧‧Upper casing

30‧‧‧ Sockets

32‧‧‧Connecting tube

34‧‧‧ recessed

36‧‧‧ Lower wing

38‧‧‧Ring thread

40‧‧‧Upper recess

42‧‧‧Upper film

44‧‧‧ internal thread

Fig. 1 is a schematic view of an embodiment of a telescopic water pipe device.

Fig. 2 is an exploded perspective view of an embodiment of the present invention.

Fig. 3 is a schematic view showing an embodiment of the outer tube of the telescopic water pipe device.

Figure 4 is a schematic diagram 2 of an embodiment of the telescopic water pipe device.

Fig. 5 is a schematic view of the third embodiment of the telescopic water pipe device.

Figure 6 is a cross-sectional view of the embodiment of the telescopic water pipe device.

Figure 7 is a schematic cross-sectional view of the embodiment of the telescopic water pipe device.

Figure 8 is a cross-sectional view taken along the line I-I of Figure 4 of the present creation.

Figure 9 is a schematic cross-sectional view of the fifth section II-II of this creation.

Please refer to the relevant drawings to further explain the creation of the telescopic water pipe. Device embodiment. In order to facilitate the understanding of the present embodiment, the same components are denoted by the same symbols.

Please refer to Figures 1 to 4 for the creation of the telescopic water pipe installation. 10, comprising: an inner tube 12, an outer tube 14 and a connecting unit 16, the main length of the inner tube and the outer tube are automatically axially stretched by the water source pressure.

The inner tube 12 includes at least one water outlet and at least one rib 18. The inner tube 12 has watertightness and elasticity of expansion and contraction, and the water outlet hole is formed in the inner tube 12 in the axial direction, so that the inner tube 12 is expanded and expanded by the adjustment of the water source pressure in the inner diameter of the water outlet hole, and the rib 18 is formed on the rib 18 The inner diameter surface of the inner tube 12 outlet hole. The ribs 18 are prevented from entanglement of the inner tube 12 to cause the inner diameter of the inner tube 12 to be closed (similar to the inner tube folded). When implemented, the outlet holes can be implemented in a single or multiple combinations depending on the requirements.

The outer tube 14 is a braid and is wrapped around the inner tube 12 The outer surface is woven by a plurality of elastic warp yarns 20 and a plurality of inelastic weft yarns 22 (as shown in Fig. 3). Wherein, each elastic warp yarn 20 has ductility and is disposed along the axial direction of the inner tube 12, and each of the inelastic weft yarns 22 is not malleable, and is continuous The tube 12 is radially arranged.

In addition, the connecting unit 16 includes a set of connectors 24, The housing 26, an upper housing 28 and a set of nozzles 30.

The sleeve member 24 is a hollow body having at least one connection The connecting pipe 32 is connected to the two ends, and the connecting pipe 32 is inserted into one end of the water outlet hole of the inner pipe 12, and the outer diameter of the connecting pipe 32 is larger than the inner diameter of the water outlet hole of the inner pipe 12, and the inner diameter of the water outlet hole of the inner pipe 12 is formed. Forced.

The lower casing 26 includes a lower recess 34 and two lower fins 36. And an annular threaded portion 38. The lower recessed portion 34 and the annular threaded portion 38 are axially formed at both ends of the lower casing 26, respectively, and the lower fins 36 are symmetrically formed on both sides of the lower casing 26.

The upper casing 28 includes an upper recess 40 and two upper fins 42. The upper casing 28 and the lower casing 26 are symmetrically formed, and the upper recess 40 and each of the upper fins 42 are positioned to correspond to the lower recess 34 and each of the lower fins 36.

The socket tube 30 includes a water outlet and an internal thread 44. set The nozzle 30 has an axially extending water outlet, and the internal thread 44 is formed on the inner diameter surface of one end of the socket tube 30, and the internal thread 44 can be screwed to the annular thread portion 38.

Therefore, the above is a preferred embodiment of the present invention. The components of the water pipe assembly are introduced, and then the assembly method and use characteristics of the present invention are described as follows: First, as shown in Figures 4 to 9, the outer tube 14 covers the inner tube 12 so that the outer diameter of the inner tube 12 is equivalent. The inner diameter of the outer tube 14. When the inner tube 12 is not connected to the water source (when there is no pressure in the inner tube 12), the length of the inner tube 12 and the outer tube 14 L is the same, at this time the inner wall 12 has the thickest wall thickness A (as shown in Figures 4, 6, and 8).

When the inner tube 12 is connected to the water source, the inner diameter of the water outlet of the inner tube 12 is affected by The top support of the water source pressure (as shown in Figures 5 to 9) causes the inner tube 12 to expand and expand, but the restriction of the outer tube 14 (the non-elastic weft yarn 22 constituting the radial direction of the outer tube 14 is not malleable), The radial length B of the tube 14 and the inner tube 12 are similar (as shown in Figures 6 and 7). Also, due to the radially constrained expansion of the inner tube 12, the inner tube 12 is forced to concentrate only toward the axial expansion (as shown in Figures 7 and 8), and the outer tube 14 is pulled together while expanding and extending axially. (The elastic warp yarn 20 constituting the outer tube 14 has elasticity), so the inner tube 12 extends in synchronization with the length L' of the outer tube (as shown in Figs. 5 and 7), and the wall thickness A' of the inner tube 12 after expansion and extension (e.g. Fig. 5 and Fig. 6) will only be slightly reduced, avoiding the same conventional case, the problem of excessive thinning of the inner tube 12 wall due to radial expansion, and the lack of axial extension.

In addition, in order to facilitate the inner tube 12 (outer tube 14) and water during assembly The source connection (such as a faucet) can be selectively used in conjunction with a connection unit 16. In practice, the socket 24 of the connecting unit member 16 is first inserted into the water outlet hole at one end of the inner tube 12 by the connecting tube 32. Since the outer diameter of the connecting pipe 32 is larger than the inner diameter of the water outlet hole of the inner pipe 12, the water outlet hole of the inner pipe 12 is formed to be outwardly urged. Cooperating with the upper and lower casings 28 and 26, the upper and lower fins 42 and 36 and the screwing member (not labeled) symmetrically sandwich the sleeve member 24 and the inner tube 12 (the outer tube 14) to make the inner tube 12 ( The outer tube 14) is received in the upper and lower recesses 40, 34. The inner diameter of the upper and lower recesses 40, 34 is symmetrically formed, which is smaller than the outer diameter of the outer tube 14, so that the connecting tube 32 forms a pressing clamp on the inner tube 12 (the outer tube 14), and the inner tube 12 is firmly connected. (outer tube 14) and socket 24, in addition, sleeve 30 The internal thread 44 can be screwed to the annular threaded portion 38 to facilitate the use of the rear end connection.

In addition to the above structure for connecting the water source, the connecting unit 16 may be a conventional structure such as a shower or a water gun.

In summary, the present expansion tube device 10 achieves at least the following benefits:

1. The radial expansion of the inner tube 12 is restrained by the outer tube 14 to prevent the inner tube 12 from expanding radially, resulting in a thin tube wall and a lack of cracking. In contrast, it is also able to withstand higher water source pressures and longer axial extensions than conventional prior cases.

2. The length of the inner tube 12 and the outer tube 14 are the same, so that the surface of the outer tube 14 does not wrinkle on the outer surface when the inner tube is contracted, which affects the appearance and interferes with the winding of the reel.

3. The inner diameter of the inner tube 12 is provided with ribs 18 on the inner diameter surface of the water outlet hole to avoid excessive bending, resulting in the lack of a closed inner diameter section of the inner tube 12 (similar to the inner tube folded).

4. The water outlet of the inner tube 12 can be selectively designed according to the requirements of the implementation. The tube wall of the inner tube 12 can be kept at a certain thickness under the same water discharge amount, so as to avoid the shortage of the tube wall and the lack of water leakage. .

The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the present embodiment, and the average variation made by those skilled in the art according to the present creation. Changes, as well as variations well known to those skilled in the art, are still within the scope of this creation.

10‧‧‧ Telescopic water pipe installation

12‧‧‧Inside

14‧‧‧External management

16‧‧‧ Connection unit

18‧‧‧ Ribs

Claims (7)

A telescopic water pipe device comprising: an inner tube having an elasticity capable of axially stretching and extending, and at least one water outlet hole extending through the axial direction, so that the inner tube can be expanded and extended by the adjustment of a water source pressure; an outer tube Covering a braid of the outer surface of the inner tube, the braid can only be axially stretched and stretched, and comprises a plurality of elastic warp yarns and a plurality of non-elastic weft yarns, each of which is disposed along the axial direction of the inner tube. The inner tube extends axially, and each of the inelastic weft yarns is disposed radially along the inner tube to constrain the inner tube from radially expanding. The telescopic water pipe device of claim 1, wherein the water outlet inner diameter surface further comprises at least one axially extending rib. The telescopic water pipe device of claim 1, wherein the inner pipe and the outer pipe are respectively sleeved with a connecting unit. The telescopic water pipe device of claim 3, wherein the connecting unit comprises: a connecting piece, an upper casing and a lower casing, the one end of the socket is sleeved with the inner pipe, and the The socket, the inner tube and the outer tube are partially received in the upper and lower housings. The telescopic water pipe device of claim 4, wherein the socket further comprises at least one connecting pipe connecting the two ends of the socket, and one end of the connecting pipe is inserted into the water outlet hole. The telescopic water pipe device of claim 5, wherein the upper casing And the lower casing respectively includes an upper concave portion and a lower concave portion symmetrically disposed to provide the inner tube, the outer tube and the connecting tube. The telescopic water pipe device of claim 6, wherein the outer diameter of the connecting pipe is larger than the inner diameter of the inner pipe, and the inner diameter of the upper concave portion and the lower concave portion is smaller than the outer diameter of the outer pipe.