A telescopic tube

Abstract

This utility model belongs to the field of telescopic water pipe technology, and specifically relates to a telescopic pipe, including an infusion tube and a protective sleeve. The infusion tube is inserted into the protective sleeve, and both the infusion tube and the protective sleeve can extend and retract along the length direction. The protective sleeve includes a tube body formed by weaving elastic wires and high-strength wires, with the elastic wires extending along the length direction of the tube body and woven within it. The tube body includes a convex ring and a concave ring, both of which surround the outer circumference of the infusion tube, and the convex ring and concave ring are staggered along the length direction of the tube body, forming a corrugated structure in the longitudinal section of the protective sleeve. The telescopic pipe can be controlled to extend, with both the infusion tube and the protective sleeve stretching along the length direction, and the convex ring retracting towards the infusion tube. The purpose of this utility model is to provide a telescopic pipe that is convenient for users to use.

Description

Technical Field

[0001] This utility model belongs to the field of telescopic water pipe technology, and specifically relates to a telescopic pipe. Background Technology

[0002] A telescopic water hose is a special type of water hose made of elastic material. It can extend during use to make it easier for users to use, and it can retract during storage to make it easier for users to store.

[0003] Many people now purchase retractable water hoses made of webbing. These hoses consist of a water pipe and a webbing outer sheath, which offers good wear resistance and prevents the water pipe from aging rapidly due to UV exposure. For example, the retractable water hose disclosed in Chinese invention patent CN 201810096910.2 includes a pipe body, a pipe connector, and a valve connector. The pipe body comprises an inner pipe and an outer pipe, with the inner pipe located inside the outer pipe. The inner pipe is made of an elastic material, while the outer pipe is made of a non-elastic fabric. The length of the outer pipe is greater than the length of the inner pipe. A pipe connector is provided at one end of the pipe body, and a valve connector is provided at the other end.

[0004] In the above structure, because the outer tube is made of non-elastic fabric, the outer tube can only extend to its original length at most, resulting in a small extension ratio of the telescopic water pipe, which is inconvenient for users. Summary of the Invention

[0005] In order to overcome the defects in the prior art, the purpose of this utility model is to provide a telescopic tube that is convenient for users to use.

[0006] The purpose of this utility model is achieved as follows:

[0007] A telescopic tube includes an infusion tube and a protective sleeve. The infusion tube is inserted into the protective sleeve, and both the infusion tube and the protective sleeve can be extended and retracted along the length direction. The protective sleeve includes a tube body formed by elastic wires and high-strength wires, with the elastic wires extending along the length direction of the tube body and woven in the tube body.

[0008] The tube body includes a convex ring and a concave ring, both of which surround the outer circumference of the infusion tube. The convex ring and concave ring are staggered along the length of the tube body, and the longitudinal section of the protective sleeve forms a corrugated structure. The extension of the telescopic tube is controlled, and both the infusion tube and the protective sleeve can be stretched along the length direction, while the convex ring can retract into the infusion tube.

[0009] The present invention is further configured such that: the elastic yarn is a core-sleeved yarn, the elastic yarn includes a core made of latex yarn or spandex yarn, and a multi-layered covering layer formed by high-speed wrapping around the outer periphery of the core.

[0010] The present invention is further configured such that: the elastic yarn comprises a core made of spandex yarn, and the spandex yarn is 150D low-elasticity spandex.

[0011] The present invention is further configured such that: the high-strength yarn includes warp and weft yarns, the tube body is woven from the warp and weft yarns, and the elastic yarn is disposed between the warp and weft yarns. During the weaving process of the tube body, the warp yarns are woven inside the elastic yarns, and the weft yarns are woven outside the elastic yarns.

[0012] The present invention is further configured such that both the warp and weft threads form a certain angle with the elastic thread.

[0013] The present invention is further configured such that: both the warp and weft threads include several high-strength yarns arranged in parallel; during the weaving process of the warp and weft threads, the high-strength yarns are spread out loosely and the warp and weft threads respectively cover the inner and outer sides of the elastic yarn, thereby making the elastic yarn hidden.

[0014] The present invention is further configured such that: a corrugated tube is provided between the infusion tube and the protective sleeve, the infusion tube passes through the corrugated tube, and the tube body is sleeved on the outer periphery of the corrugated tube.

[0015] The advantages of this utility model compared to the prior art are:

[0016] 1. In this utility model, both the infusion tube and the protective sleeve can extend and retract along the length direction. During the extension and retraction of the telescopic tube, the infusion tube and the protective sleeve can extend and retract synchronously, which facilitates the stable extension and retraction of the telescopic tube and makes it convenient for users. Since the protective sleeve is composed of a tube body woven from elastic wires and high-strength wires, it is beneficial to increase the maximum extension and retraction of the protective sleeve, thereby increasing the elongation ratio of the telescopic tube. During use, the telescopic tube can deliver liquid to a farther place, which is convenient for users. Furthermore, the setting of the convex ring and concave ring is beneficial to further improve the elongation ratio of the protective sleeve and to improve the extension and retraction limit range of the telescopic tube.

[0017] 2. In this utility model, since the elastic yarn is the wrapping yarn, it is beneficial to increase the friction between the elastic yarn and the warp and weft yarns, which facilitates the synchronous contraction of the elastic yarn and the tube body. This structure can reduce stretching and avoid relative sliding between the elastic yarn and the warp and weft yarns, which is beneficial to the uniform deformation of the elastic yarn during the stretching and contraction of the telescopic tube, and helps to extend the service life of the elastic yarn and the telescopic tube. 150D low-elastic spandex has weak tensile elasticity, and its elasticity is more moderate. After stretching, it can quickly return to its original shape, with a recovery rate of over 95%, which is beneficial to extending the service life of the elastic yarn.

[0018] 3. The arrangement of warp and weft threads in this utility model allows the elastic thread to be relatively independent from the tube body. Even when the elastic thread is damaged, the tube body can still be used, which helps to extend the service life of the telescopic tube. Since the warp threads are woven inside the elastic thread and the weft threads are woven outside the elastic thread, it helps to reduce the bending of the elastic thread during production and use, and facilitates the free expansion and contraction of the elastic thread. The parallel arrangement of high-strength threads helps to shield the inner and outer sides of the elastic thread, preventing the elastic thread from being exposed and worn or aged, which helps to extend the service life of the elastic thread.

[0019] 4. In this utility model, since both the warp and weft threads form a certain angle with the elastic thread, and the elastic thread extends along the length of the tube, this structure ensures that the warp and weft threads are not perpendicular or parallel to the elastic thread and the water pipe. During the elongation of the elastic thread and the water pipe, this braided structure can disperse the frictional force on the tube body after the water pipe expands, making the expansion and contraction of the telescopic tube smoother and reducing the friction on the water pipe and protective sleeve during use. Moreover, the higher the water pressure in the water pipe, the more the water pipe expands axially and radially, thereby tightening the protective sleeve, making the structure more compact, and improving the protective performance.

[0020] 5. In this utility model, the corrugated pipe can freely expand and contract within a certain range. Moreover, the corrugated pipe is lightweight and resistant to high pressure, which can effectively protect the infusion tube and prevent external liquids or the external environment from directly contacting the infusion tube, thus helping to extend the service life of the infusion tube. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the telescopic tube of this utility model in its natural state;

[0022] Figure 2 This is a cross-sectional view of the telescopic tube of this utility model in its extended state;

[0023] Figure 3 This is a schematic diagram of the weaving of warp, weft, and elastic yarns when the tube body of this utility model is in the unfolded state;

[0024] Figure 4 This is a disassembly diagram of the warp, weft, and elastic yarn braiding structure in this utility model;

[0025] Figure 5 This is an exploded view of the braided structure of warp, weft, and elastic yarn in this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the tube body of this utility model when it is woven from high-strength wire and elastic rope;

[0027] Figure 7 This is a schematic diagram of the elastic wire in this utility model.

[0028] The labels in the diagram mean: 1-protective sleeve; 11-convex ring; 12-concave ring; 2-infusion tube; 3-corrugated tube; 4-warp; 5-weft; 6-elastic yarn; 61-core; 62-coating layer; 7-high-strength yarn. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] See Figures 1 to 7 As shown, a telescopic tube includes an infusion tube 2 and a protective sleeve 1. The infusion tube 2 is inserted into the protective sleeve 1, and both the infusion tube 2 and the protective sleeve 1 can extend and retract along their length. The protective sleeve 1 includes a tube body woven from elastic wires 6 and high-strength wires 7. The elastic wires 6 extend along the length of the tube body and are woven within it. In this structure, both the infusion tube 2 and the protective sleeve 1 can extend and retract along their length. During the extension and retraction of the telescopic tube, the infusion tube 2 and the protective sleeve 1 can extend and retract synchronously, facilitating stable extension and retraction of the telescopic tube and making it convenient for users. Furthermore, since the protective sleeve 1 includes a tube body woven from elastic wires 6 and high-strength wires 7, it is beneficial to increase the maximum extension and retraction amount of the protective sleeve 1, thereby increasing the elongation ratio of the telescopic tube. During use, the telescopic tube can transport liquid to a farther location, making it more convenient for users.

[0031] The tube body includes a convex ring portion 11 and a concave ring portion 12, both of which surround the outer periphery of the infusion tube 2. The convex ring portion 11 and the concave ring portion 12 are staggered along the length direction of the tube body, and the longitudinal section of the protective sleeve 1 forms a corrugated structure. The extension of the telescopic tube is controlled, and both the infusion tube 2 and the protective sleeve 1 can be stretched along the length direction. The convex ring portion 11 can contract towards the infusion tube 2. The arrangement of the convex ring portion 11 and the concave ring portion 12 in this structure is beneficial to further improve the elongation ratio of the protective sleeve 1 and to improve the telescopic limit range of the telescopic tube.

[0032] A corrugated tube 3 is provided between the infusion tube 2 and the protective sleeve 1. The infusion tube 2 passes through the corrugated tube 3, and the tube body is sleeved on the outer periphery of the corrugated tube 3. The corrugated tube 3 can freely expand and contract within a certain range. The corrugated tube 3 is lightweight and resistant to high pressure. It can effectively protect the infusion tube 2 and prevent external liquids or external environment from directly contacting the infusion tube 2, which is conducive to extending the service life of the infusion tube 2.

[0033] The elastic yarn 6 described in this invention is a core-wrapping yarn. The elastic yarn 6 includes a core 61 made of latex yarn or spandex yarn, and a multi-layered covering layer 62 formed by high-speed wrapping around the outer periphery of the core 61. This structure is beneficial to increasing the friction between the elastic yarn 6 and the warp yarn 4 and weft yarn 5, facilitating the synchronous contraction of the elastic yarn 6 and the tube body. This structure can reduce stretching and avoid relative sliding between the elastic yarn 6 and the warp yarn 4 and weft yarn 5, which is beneficial to the uniform deformation of the elastic yarn 6 during the expansion and contraction of the telescopic tube, and helps to extend the service life of the elastic yarn 6 and the telescopic tube.

[0034] In this embodiment, the elastic yarn 6 includes a core 61 made of spandex yarn. The spandex yarn is 150D low-elasticity spandex. 150D low-elasticity spandex has weak tensile elasticity and its elasticity is more moderate. After stretching, it can quickly return to its original shape with a recovery rate of more than 95%, which is beneficial to extending the service life of the elastic yarn 6.

[0035] The tube body can be woven from high-strength yarn 7 and elastic yarn 6. This structure is a common technical means in the textile field. Therefore, although this structure is only shown in the accompanying drawings of the specification, those skilled in the art can implement this technical solution. Preferably, the high-strength yarn 7 includes warp yarn 4 and weft yarn 5. The tube body is woven from warp yarn 4 and weft yarn 5. The arrangement of warp yarn 4 and weft yarn 5 allows the elastic yarn 6 to be relatively independent from the tube body. When the elastic yarn 6 is damaged, the tube body can continue to be used, which is beneficial to extending the service life of the telescopic tube.

[0036] The elastic thread 6 is placed between the warp thread 4 and the weft thread 5. During the tube weaving process, the warp thread 4 is woven inside the elastic thread 6, and the weft thread 5 is woven outside the elastic rope. This structure helps to reduce the bending of the elastic thread 6 during production and use, and facilitates the free expansion and contraction of the elastic thread 6.

[0037] In this invention, both the warp yarn 4 and the weft yarn 5 form a certain angle with the elastic thread 6, that is, both the warp yarn 4 and the weft yarn 5 are inclined to the elastic thread 6. This structure ensures that the warp yarn 4 and the weft yarn 5 are not perpendicular or parallel to the elastic thread 6 and the water pipe. During the elongation of the elastic thread 6 and the water pipe, this braided structure can disperse the frictional force on the pipe body after the water pipe expands, making the expansion and contraction of the telescopic pipe smoother and reducing the friction on the water pipe and the protective sleeve 1 during use. Moreover, the higher the water pressure of the water pipe, the more the axial and radial expansion of the water pipe, thereby tightening the protective sleeve 1, making the structure more compact, and improving the protective performance.

[0038] In this embodiment, both the warp 4 and weft 5 include several high-strength yarns 7 arranged in parallel. During the weaving process of the warp 4 and weft 5, the high-strength yarns 7 are spread out loosely, and the warp 4 and weft 5 respectively cover the inner and outer sides of the elastic yarn 6, thereby hiding the elastic yarn 6. The parallel arrangement of the high-strength yarns 7 is beneficial to covering the inner and outer sides of the elastic yarn 6, avoiding wear or aging of the elastic yarn 6 due to exposure, and helping to extend the service life of the elastic yarn 6.

[0039] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A telescopic tube, comprising an infusion tube (2) and a protective sleeve (1), wherein the infusion tube (2) passes through the protective sleeve (1), characterized in that: Both the infusion tube (2) and the protective sleeve (1) can extend and retract along the length direction. The protective sleeve (1) includes a tube body woven from elastic wire (6) and high-strength wire (7). The elastic wire (6) extends along the length direction of the tube body and is woven into the tube body. The tube body includes a convex ring (11) and a concave ring (12), both of which surround the outer periphery of the infusion tube (2). The convex ring (11) and the concave ring (12) are staggered along the length of the tube body, and the longitudinal section of the protective sleeve (1) forms a corrugated structure. The extension of the telescopic tube is controlled, and both the infusion tube (2) and the protective sleeve (1) can be stretched along the length direction. The convex ring (11) can retract into the infusion tube (2).

2. The telescopic tube according to claim 1, characterized in that: The elastic filament (6) is a core-wrapped filament, which includes a core (61) made of latex or spandex filament, and a multi-layered covering layer (62) formed by high-speed wrapping around the outer periphery of the core (61).

3. A telescopic tube according to claim 2, characterized in that: The elastic filament (6) comprises a core (61) made of spandex filament, the spandex filament being a 150D low-elasticity spandex.

4. A telescopic tube according to claim 1, 2, or 3, characterized in that: The high-strength yarn (7) includes warp (4) and weft (5). The tube is woven from the warp (4) and weft (5). The elastic yarn (6) is placed between the warp (4) and weft (5). During the weaving process, the warp (4) is woven inside the elastic yarn (6), and the weft (5) is woven outside the elastic yarn.

5. A telescopic tube according to claim 4, characterized in that: The warp (4) and weft (5) are both at a certain angle to the elastic thread (6).

6. A telescopic tube according to claim 5, characterized in that: Both the warp (4) and weft (5) include several high-strength yarns (7) arranged in parallel. During the weaving process of the warp (4) and weft (5), the high-strength yarns (7) are spread out loosely and the warp (4) and weft (5) cover the inner and outer sides of the elastic yarn (6) respectively, so that the elastic yarn (6) is hidden.

7. A telescopic tube according to claim 1, 2, 3, 5, or 6, characterized in that: A corrugated pipe (3) is provided between the infusion tube (2) and the protective sleeve (1). The infusion tube (2) passes through the corrugated pipe (3) and the tube body is sleeved on the outer periphery of the corrugated pipe (3).

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