Patent Document

FIELD OF THE INVENTION 
       [0001]    The present invention relates to a hose for collecting rain water or draining water, belongs to the field of environmental protection, and particularly relates to a telescopic hose capable of keeping the current shape in an extending or folded state. 
       BACKGROUND OF THE INVENTION 
       [0002]    Some drain pipes or water drawing pipes are needed in the process of landscaping and soil improvement. To prevent the erosion of moisture or other chemical elements in soil and reduce the manufacturing cost at the same time, plastic pipes are generally used as the drain pipes or the water drawing pipes. 
         [0003]    In the prior art, annular corrugated plastic pipes are used as the drain pipes. The pipe wall of each of these annular corrugated pipes, formed by a plurality of annular rings at intervals, has certain extension and contraction capabilities and can be pressed and contracted. However, the contraction capability of these annular corrugated pipes is very limited, and the contraction of each annular corrugated pipe completely depends on self bending of the pipe wall of the plastic pipe. The bending amplitude of the pipe wall is relatively large during the contraction and extension process, so that brittle fracture is easily caused. Meanwhile, when plastic is aged, the extension capability of the plastic pipe is greatly weakened along with the bending capability of the pipe wall of the plastic pipe, and the plastic pipe always may not be well extended or contracted. Generally speaking, it greatly hinders the use of the plastic pipe as the plastic pipe may not be extended or folded to a predetermined position but only remains in an intermediate state of partial extension and partial folding. In addition, the extension and contraction performance of the existing telescopic corrugated pipes is poor and is greatly influenced by materials. Particularly, common telescopic hoses are made of plastic, and the plastic itself has considerable elasticity, so folded hoses restore to the extension state under the action of the elasticity of the plastic. The corrugated pipes may not be folded orderly, and the folded state may not be well kept. 
         [0004]    Therefore, it is necessary to develop a telescopic hose capable of reducing the bending amplitude of the pipe wall as much as possible and keeping the shape in the extending or folded state at the same time. 
       BRIEF SUMMARY OF THE INVENTION 
       [0005]    Aiming at the defect that the pipe wall of a telescopic hose is easily influenced by the factors such as ageing so that the extension and contraction capabilities of the hose decline in the prior art, this invention provides a novel telescopic hose of which the extension and contraction capabilities are still kept under the condition that the material is aged and damaged. 
         [0006]    To achieve the above purposes, the invention may adopt the following technical schemes. 
         [0007]    A pipe wall of the telescopic hose is formed by a plurality of wrinkling parts coiled in a stretching direction of the telescopic hose. Each wrinkling part includes a first wrinkling wall and a second wrinkling wall, and the first wrinkling wall and the second wrinkling wall extend along a coiling direction of the wrinkling part. Each wrinkling part protrudes towards an outer side of the telescopic hose, and the first wrinkling wall and the second wrinkling wall are respectively positioned on two sides of a protruding direction of the wrinkling part. Along the coiling direction of the wrinkling part, one side of the first wrinkling wall is connected with the second wrinkling wall, and the other side of the first wrinkling wall is connected with the second wrinkling wall of an adjacent wrinkling part. A section of the first wrinkling wall along an extending direction of the wrinkling part includes a bottom concave section, a first connecting section, a second connecting section and a top concave section. The bottom concave section, the first connecting section, the second connecting section, and the top concave section are connected end to end from the side of the first wrinkling wall close to the adjacent wrinkling part to the side of the first wrinkling wall close to the second wrinkling wall. Bottoms of both the top concave section and the bottom concave section protrude opposite to the protruding direction of the wrinkling part. The first wrinkling wall further includes a raised section between the top concave section and the second connecting section, and two ends of the raised section are respectively connected with the top concave section and the second connecting section. The first connecting section protrudes towards an outer side of the wrinkling part. The second connecting section is sunken towards an inner side of the wrinkling part. A section of the second wrinkling wall along the extending direction of the wrinkling part includes a third connecting section. The third connecting section is sunken towards the inner side of the wrinkling part. 
         [0008]    In an embodiment of the present invention, the pipe wall of the telescopic hose may include at least two columns of through holes, and each column of through holes is arranged along the stretching direction of the telescopic hose. 
         [0009]    In the embodiment of the present invention, when the telescopic hose is in a folded state, the through holes may be uniformly arranged around the telescopic hose at intervals, and the through holes may be arranged linearly in the stretching direction of the telescopic hose. 
         [0010]    In one embodiment of the invention, the through holes may be positioned at joints of the first wrinkling walls and the second wrinkling walls. 
         [0011]    In one embodiment of the invention, the section of the first wrinkling wall along the extending direction of the wrinkling part further may include a superposed section. One end of the superposed section may be connected with the second connecting section, and the other end of the superposed section may be connected with the raised section. 
         [0012]    In one embodiment of the invention, the superposed section may include a first superposed section and a second superposed section. The first superposed section may be an extension of the second connecting section, and the second superposed section may be an extension of the raised section. The second superposed section may be positioned on the outer side of the wrinkling part relative to the first superposed section. 
         [0013]    In one embodiment of the invention, the first superposed section may extend from the second connecting section to the third connecting section along an inner surface of the wrinkling part. 
         [0014]    In one embodiment of the invention, the section of the second wrinkling wall along the extending direction of the wrinkling part may further include a fourth connecting section. The fourth connecting section may be positioned at one end of the third connecting section far from a joint of the first wrinkling wall and the second wrinkling wall. One end of the fourth connecting section may be connected with the third connecting section. The fourth connecting section may protrude towards the outer side of the wrinkling part. 
         [0015]    In one embodiment of the invention, the second connecting section may be as long as or at least slightly longer than the first connecting section. 
         [0016]    In one embodiment of the invention, the bottom of the top concave section may face one side of the protruding direction of the wrinkling part. 
         [0017]    The present invention has the following significant technical effects: 
         [0018]    The hose can be extended or folded conveniently, and can be stably kept in an extending or folded state. In the extended state, the hose presents an appearance similar to helixes; while in the folded state, the hose is folded into a straight pipe, and the length of the hose is greatly shortened, so that the storage space required during transportation is reduced and the transportation cost is reduced. Moreover, the hose is generally applied to soil improvement or courtyard greening and the like. The overall extension and contraction rate of the hose is less influenced by the material, so the service life is long, the using cost is reduced, and environmental friendliness is facilitated. The hose is universally popularized and used in the fields of landscaping and soil improvement at home and abroad, and the social response is good. Further, both the top concave section and the bottom concave section of the first wrinkling part have a bent structure similar to the shape of S, so that the bending amplitude of the pipe wall is reduced, breakage caused by excessive bending of the pipe wall may be effectively prevented. Particularly when the material is aged, the situation of pipe wall breakage caused by the increase of material brittleness due to ageing may be reduced, and the service life of the hose may be prolonged. 
         [0019]    Further, the pipe wall is also provided with at least two columns of through holes, and each column of through holes is arranged linearly along the length direction of the hose in the folded state of the hose, so that early processing is facilitated. When the hose is in the extended state, each column of through holes presents a helical shape along with the rotation of the wrinkling part, so that water flow in each direction in the hose or the water in the soil may flow into and flow out from the hose in use, and accumulation of the water inside and outside the hose is effectively reduced. Gauze surrounding the pipe wall may prevent soil blocks or other impurities from entering the hose and prevent the hose from being blocked. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0020]      FIG. 1  is a structural schematic diagram showing a telescopic hose according to one embodiment of the present invention; 
           [0021]      FIG. 2  is a structural schematic diagram showing a section of the telescopic hose along an extending direction of a wrinkling part according to one embodiment of the invention; 
           [0022]      FIG. 3  is an enlarged schematic diagram of A in  FIG. 2 ; and 
           [0023]      FIG. 4  is a dimension schematic diagram of the section of the telescopic hose along the extending direction of the wrinkling part according to the embodiment of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0024]    The present invention will be further described in detail below in combination with an embodiment. 
         [0025]    A telescopic hose is shown in  FIG. 1 . A pipe wall of the telescopic hose  10  is formed by a plurality of wrinkling parts  11  coiled in a stretching direction D 1  of the telescopic hose  10 . Drawn in  FIG. 1  are a folded section  20  and a stretching section  30  of the telescopic hose  10 . Coiling indicates that the wrinkling parts  11  extend clockwise or anticlockwise (namely coiling direction D 2 ) around a center line which is the stretching direction D 1 . An extending direction of the wrinkling parts  11  around the center line is a coiling direction, and the coiling direction is also the processing direction of the telescopic hose  10 . Finally, the pipe wall of the telescopic hose  10  forms a helical structure similar to a spring or a bolt. 
         [0026]    Each wrinkling part  11  includes a first wrinkling wall  100  and a second wrinkling wall  200 , as shown in  FIG. 2  and  FIG. 3 . For brief description in  FIG. 2 ,  FIG. 3 , and  FIG. 4 , the thickness of the pipe wall is concealed, and only lines are reserved. Both the first wrinkling wall  100  and the second wrinkling wall  200  extend along the coiling direction of the wrinkling part  11 . The wrinkling part  11  protrudes far from an outer side of the telescopic hose  10 . That is, the fracture surface of the wrinkling part  11  is in a crest shape when being seen from a section of the wrinkling part  11  in an extending direction D 3 . The peak of the crest is the protruding direction of the wrinkling part  11 , and the first wrinkling wall  100  and the second wrinkling wall  200  are respectively positioned on two sides of the protruding direction of the wrinkling part  11 . Along the coiling direction of the wrinkling part  11 , one side of the first wrinkling wall  100  is connected with the second wrinkling wall  200 , and the other side of the first wrinkling wall  100  is connected with the second wrinkling wall of an adjacent wrinkling part  12 . 
         [0027]    The section of the first wrinkling wall  100  along the extending direction D 3  of the wrinkling part  11  includes a bottom concave section  101 , a first connecting section  102 , a second connecting section  103 , and a top concave section  104 . The bottom concave section  101 , the first connecting section  102 , the second connecting section  103 , and the top concave section  104  are connected end to end from one side of the first wrinkling wall  100  close to the adjacent wrinkling part  12  to the side of the first wrinkling wall  100  close to the second wrinkling wall  200 . 
         [0028]    Bottoms of both the top concave section  104  and the bottom concave section  101  protrude opposite to the protruding direction of the wrinkling part  11 . The top concave section  104  and the bottom concave section  101  form two grooves along the coiling direction, wherein the top concave section  104  is positioned close to the crest peak of the wrinkling part  11 , and the bottom concave section  101  is positioned at the bottom of the trough of the wrinkling part  11 . In an extending or folding process of the telescopic hose, both the top concave section  104  and the bottom concave section  101  can be bent to ensure that the wrinkling parts  11  of the telescopic hose can be superposed together. 
         [0029]    The first wrinkling wall  100  further includes a raised section  105  between the top concave section  104  and the second connecting section  103 , and two ends of the raised section  105  are respectively connected with the top concave section  104  and the second connecting section  103 . The raised section  105  forms a raised edge along the coiling direction, so that the first wrinkling wall  100  can be conveniently bent and approach the second wrinkling wall  200 . 
         [0030]    The first connecting section  102  protrudes towards an outer side of the wrinkling part  11 . The second connecting section  103  is sunken towards an inner side of the wrinkling part  11 . The first connecting section  102  and the second connecting section  103  are respectively used for keeping a folded state and an extended state of the telescopic hose. The first connecting section  102  protrudes towards the outer side to keep the shape of the hose in the extended state, and the second connecting section  103  is sunken towards the inner side to keep the shape of the hose in the folded state. 
         [0031]    A section of the second wrinkling wall  200  along the extending direction D 3  of the wrinkling part  11  includes a third connecting section  201 . The third connecting section  201  is sunken towards the inner side of the wrinkling part  11 , so that the current shape of the third connecting section  201  is kept unchanged in the extending and folding processes of the hose. The pipe wall of the telescopic hose  10  further includes at least two columns of through holes  300  (only one column is drawn in the figure), preferably, four columns or six columns of through holes  300 ; and each column of through holes  300  is arranged along the stretching direction D 1  of the telescopic hose  10 . Water flow or water in the soil enters the inner cavity of the hose via the through holes  300 . 
         [0032]    When the telescopic hose  10  is in the folded state, the through holes are uniformly arranged around the telescopic hose  10  at intervals. The through holes  300  are arranged linearly in the stretching direction D 1  of the telescopic hose  10 . When the hose is in the extended state, each wrinkling part  11  rotates for a relatively small angle along the coiling direction in the extending process, so each column of through holes  300  is helically arranged on the circumference of the pipe wall of the hose in the extended state. The through holes  300  are positioned at joints of the first wrinkling walls  100  and the second wrinkling walls  200  to facilitate processing. 
         [0033]    The section of the first wrinkling wall  100  along the extending direction D 3  of the wrinkling part  11  further includes a superposed section  106 ; one end of the superposed section  106  is connected with the second connecting section  103 , and the other end of the superposed section  106  is connected with the raised section  105 . 
         [0034]    The superposed section  106  includes a first superposed section  1061  and a second superposed section  1062 . The first superposed section is an extension of the second connecting section  103 , and the second superposed section  1062  is an extension of the raised section  105 . The second superposed section  1062  is positioned on the outer side of the wrinkling part  11  relative to the first superposed section  1061 . 
         [0035]    The first superposed section  1061  extends from the second connecting section  103  to the third connecting section  201  along an inner surface of the wrinkling part  11 . In another embodiment, the first superposed section  1061  may also extend to a position nearby the bottom groove  101  along the third connecting section  201  all the time, to further improve the strength of the second wrinkling wall  200 . Moreover, as another optional structure, the second superposed section  1062  may extend to the tail end of the first connecting section  102  connected with the bottom concave section  101  along the outer surface of the second connecting section  103 . 
         [0036]    The superposed section  106  has a structure formed by superposing two plastic or resin sheets extending along the coiling direction. The superposed section  106  may enhance the structural strength of the top concave section  104 , the extending part of the first superposed section  1061  may enhance the structural strength of the third connecting section  201 , and the extending part of the second superposed section  1062  may enhance the structural strength of the second wrinkling wall  200 , so that the original shapes of the top concave section  104  and the third connecting section  201  may be kept in the folding and extending processes. 
         [0037]    The section of the second wrinkling wall  200  along the extending direction D 3  of the wrinkling part  11  further includes a fourth connecting section  202 . The fourth connecting section  202  is positioned at one end of the third connecting section  201  far from the joint of the first wrinkling wall  100  and the second wrinkling wall  200 , and one end of the fourth connecting section  202  is connected with the third connecting section  201 . The fourth connecting section  202  protrudes towards the outer side of the wrinkling part  11 . The fourth connecting section  202  may be slightly bent towards the inner side of the wrinkling part  11  during folding to facilitate the folding. 
         [0038]    The second connecting section  103  is as long as or at least slightly longer than the first connecting section  102 . The bottom of the top concave section  104  faces one side of the protruding direction of the wrinkling part  11 . 
         [0039]    Moreover, the telescopic hose  10  further includes gauze around the outer side of the pipe wall of the telescopic hose  10 . The gauze may prevent soil or other impurities from passing and prevent the hose from being blocked. 
         [0040]    The telescopic hose has the folded state and the extended state. When the telescopic hose  10  is contracted to the folded state, the two ends of the bottom concave section  101  are bent and contracted towards the center, and the two ends of the top concave section  104  are expanded far from the center of the top concave section  104 . The raised section  105  is bent towards the inner side of the telescopic hose  10  at the same time. Thus, the part between the raised section  105  and the bottom concave section  101  rotates towards the second wrinkling wall  200  by taking the protruding vertex of the raised section  105  as the center when folded and contracted, till the first wrinkling wall  100  is attached to the second wrinkling wall  200  to form the folded state. 
         [0041]    Further, the section of the first wrinkling wall  100  along the extending direction D 3  of the wrinkling part  11  is a curve. As shown in  FIG. 4 , the linear distance from one end of the curve to the other end is c. That is, the bottom center of the bottom concave section  101  is a point O 1 , and the point of the joint of the first wrinkling wall  100  and the second wrinkling wall  200  on the section is a point O 2 , so the distance between the point O 1  and the point O 2  is c. The point of the joint of the first wrinkling wall and the second wrinkling wall of the adjacent wrinkling part  12  on the section is a point O 3 , and the linear distance between the point O 2  and the point O 3  is a. Further, the straight line passing through the point O 1  and the point O 2  is L 1 , the straight line passing through the point O 1  and the point O 3  is L 2 , and the included angle between L 1  and L 2  is a. The straight line along the tangential direction of the first connecting section  102  connected with one end of the bottom concave section  101  is L 3 , the straight line along the tangential direction of the fourth connecting section  202  connected with the other end of the bottom concave section  101  is L 4 , and the included angle between L 3  and L 4  is β. The impression distance of the top concave section  104 , that is the distance between the bottom center of the top concave section  104  and the point O 2  is H. The impression distance of the bottom concave section  101 , that is the distance between the tail end point of the extending part of the first superposed section  1061  extending along the inner surface of the second wrinkling wall  200  and the bottom midpoint of the bottom concave section  101  (or the bottom of the bottom concave section  101  at the trough of the wrinkling part  11 ) is E. Then the dimension of the telescopic hose  10  is: 
         [0000]    a=10 mm-16 mm;
 
c=8 mm-14 mm;
 
α=20°−80°;
 
β=60°−140°;
 
H=0-4 mm, when H=0, the top concave section  104  is positioned right above the top of the crest of the wrinkling part  11 ;
 
E=0-5 mm, when E=0, the first superposed section  1061  extends along the inner surface of the second wrinkling wall  200  all the time to reach the bottom center of the bottom concave section  101 .
 
         [0042]    The above dimension data is under the condition that the orifice diameter of the telescopic hose is 2 to 8 inches, wherein the orifice diameter may be the inside diameter or the outside diameter of the hose. 
         [0043]    Further, the optional dimensions of the telescopic hose  10  under different orifice diameters are listed in table 1 below. 
         [0000]    
       
         
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 1 
               
               
                   
               
               
                   
                 Orifice 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
                 Diameter 
                 a 
                 c 
                 α 
                 β 
                 H 
                 E 
               
               
                 No. 
                 (mm) 
                 (mm) 
                 (mm) 
                 (°) 
                 (°) 
                 (mm) 
                 (mm) 
                 Note 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 100 
                 14 
                 11.5 
                 40 
                 105 
                 2 
                 1 
                 The orifice diameter is the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 inside diameter or the outside 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 diameter. 
               
               
                 2 
                 51 
                 12 
                 10 
                 40 
                 105 
                 2 
                 1 
                 The orifice diameter is the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 inside diameter. 
               
               
                 3 
                 66 
                 12 
                 10 
                 40 
                 105 
                 2 
                 1 
                 The orifice diameter is the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 outside diameter. 
               
               
                   
               
             
          
         
       
     
         [0044]    It should be pointed out that, the dimensions recorded in the above table are preferred items, but it does not mean that the telescopic hose recorded in this embodiment can only select the data in the above table, and any other dimensions in accordance with the dimension of the hose of this embodiment is optional. 
         [0045]    The telescopic hose obtained by the above embodiment is compared with some telescopic hoses available in the market, and the results are shown in table 2 below: 
         [0000]    
       
         
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 2 
               
               
                   
               
               
                   
                   
                   
                 Top 
                 Bottom 
                   
                   
                   
                 Folded State 
                 Extended state 
               
               
                   
                 Product 
                   
                 Concave 
                 Concave 
                 Pipe Wall 
                 Superposed 
                 Folded Part 
                 Effect Description 
                 Effect Description 
               
               
                 No. 
                 Description 
                 Source 
                 Section 
                 Section 
                 Structure 
                 Section 
                 during Folding 
                 and Comparison 
                 and Comparison 
               
               
                   
               
             
             
               
                 1 
                 The 
                 Embodiment 1 
                 Yes 
                 Yes 
                 Helical 
                 Yes 
                 Top 
                 The first 
                 Extension is 
               
               
                   
                 telescopic hose 
                   
                   
                   
                   
                   
                 concave 
                 wrinkling 
                 good, 
               
               
                   
                 recorded 
                   
                   
                   
                   
                   
                 section and 
                 wall is 
                 deformation is 
               
               
                   
                 in 
                   
                   
                   
                   
                   
                 bottom 
                 well 
                 avoided 
               
               
                   
                 embodiment 1 
                   
                   
                   
                   
                   
                 concave 
                 attached 
                 in the 
               
               
                   
                   
                   
                   
                   
                   
                   
                 section 
                 to the 
                 extended 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 second 
                 state, 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 wrinkling 
                 and the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 wall after 
                 extended 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 being 
                 state can 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 folded, 
                 be well 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the folded 
                 kept; the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 state is 
                 pipe wall 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 kept well, 
                 has 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the folded 
                 relatively good 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 hose is 
                 toughness in the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 unlikely 
                 extended 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 to 
                 state, 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 deform, 
                 and is 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 and the 
                 upright 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 pipe wall 
                 and 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 thickness 
                 unlikely 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 and the 
                 to 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 pipe 
                 deform. 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 diameter 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 do not 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 influence 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 keeping 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 of the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 folded 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 state 
               
               
                 2 
                 A 
                 Market 
                 No 
                 No 
                 Annular 
                 No 
                 Crests and 
                 Attachment 
                 Different 
               
               
                   
                 telescopic 
                   
                   
                   
                   
                   
                 troughs of 
                 of the 
                 parts of 
               
               
                   
                 hose 
                   
                   
                   
                   
                   
                 waves 
                 hose is 
                 the pipe 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 poor after 
                 wall of 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the hose 
                 the hose 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 is folded, 
                 do not 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 and the 
                 extend 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 hose 
                 uniformly, and 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 automatically 
                 part of 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 restores to 
                 the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the 
                 waves 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 extended 
                 may 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 state after 
                 contract 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 standing 
                 partially; 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 for a 
                 the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 period of 
                 whole 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 time; the 
                 structure 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 pipe wall 
                 is not 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 of the 
                 uniform. 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 hose is in an 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 annular 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 wave 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 shape, 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 and the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 waves are 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 independent 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 from each 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 other, so 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 that the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 contraction 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 rate of 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the folded 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 hose is 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 not 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 uniform, 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 and a 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 plurality 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 of waves 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 may not 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 well keep 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the folded 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 state 
               
               
                 3 
                 A 
                 Market 
                 No 
                 No 
                 Helical 
                 No 
                 Crests and 
                 The pipe 
                 Due to the 
               
               
                   
                 telescopic 
                   
                   
                   
                   
                   
                 troughs of 
                 wall of 
                 helical 
               
               
                   
                 corrugated 
                   
                   
                   
                   
                   
                 waves 
                 the folded 
                 waves, 
               
               
                   
                 pipe 
                   
                   
                   
                   
                   
                   
                 part is too 
                 the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 thin, and 
                 extending 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 the 
                 of the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 corrugated 
                 corrugated 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 pipe is 
                 pipe is 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 easily 
                 limited; 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 broken 
                 distortion 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 after 
                 easily 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 being 
                 happens 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 used for 
                 in the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 multiple 
                 extended 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 times; the 
                 state, 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 pipe wall 
                 and the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 of the 
                 installation is 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 folded 
                 affected. 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 hose is 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 attached 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 too 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 tightly, so 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 that the 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 hose is 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 difficult 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 to extend 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 again 
               
               
                   
               
             
          
         
       
     
         [0046]    To sum up, the hose according to the embodiment of the invention can be extended or folded conveniently, and can be stably kept in an extending or folded state. In the extended state, the hose presents an appearance similar to helixes; while in the folded state, the hose is folded into a straight pipe, and the length of the hose is greatly shortened, so that the storage space required during transportation is reduced and the transportation cost is reduced. Moreover, the hose is generally applied to soil improvement or courtyard greening and the like. The overall extension and contraction rate of the hose is less influenced by the material, so the service life is long, the using cost is reduced, and environmental friendliness is facilitated. The hose is universally popularized and used in the fields of landscaping and soil improvement at home and abroad, and the social response is good. Further, both the top concave section and the bottom concave section of the first wrinkling part have a bent structure similar to the shape of S, so that the bending amplitude of the pipe wall is reduced, breakage caused by excessive bending of the pipe wall may be effectively prevented. Particularly when the material is aged, the situation of pipe wall breakage caused by the increase of material brittleness due to ageing may be reduced, and the service life of the hose may be prolonged. 
         [0047]    In conclusion, the above embodiment is merely a preferred embodiment of the present invention, and equivalent alterations and modifications made according to the patent scope of the present invention shall fall into the scope of the present invention.

Technology Category: 2