TW201839299A - Hose structure - Google Patents

Abstract

A hose structure includes an inner member that allows water to pass therethrough, and an elastic member that is provided separately from the inner member, extends along the inner member, and is configured to expand and contract in the extending direction of the inner member according to the liquid passing state in the inner member.

Description

   Hose structure   

The present invention relates to a hose structure.

Patent Document 1 discloses a hose that automatically expands in a long direction and automatically expands in a horizontal direction by applying a liquid pressure.

    [Prior technical literature]         [Patent Literature]    

[Patent Document 1] Japanese Patent Laid-Open No. 2013-249948

Here, in the hose described in Patent Document 1, the liquid passing portion is expanded and contracted so that it can be deformed with the liquid. In such a hose, if the liquid passing portion is repeatedly expanded and contracted, the liquid passing portion may be damaged. When the liquid-passing part is damaged, the liquid-permeability and elasticity functions of the hose will be impaired.

Accordingly, an object of the present invention is to provide a hose structure that can be deformed by a fluid while suppressing breakage of a portion through which a liquid passes.

The hose structure of the same state of the present invention includes: a flow-through member, which is substantially elliptical in cross section for fluid flow; and a telescopic member, which is provided as a different member from the flow-through member and extends along the flow-through member at the same time, And it is comprised so that it may expand and contract in the extending direction of a flow-through member according to the flow-through state in a flow-through member.

In the hose structure of the same state of the present invention, the telescopic member, which is a different member from the through-flow member, is provided so as to be able to expand and contract in the extending direction of the through-flow member in accordance with the flow state in the through-flow member. Since such a telescopic member extends along the through-flow member, the through-flow member can deform as the telescopic member expands and contracts. With this structure, the hose structure is divided into a part for supplying flow (through-flow member) and a part for expansion and contraction (telescoping member), and the part for supplying flow can be deformed (for example, it can be stored in a compact and compact type) State) without having to expand or contract the part for the flow. In this way, it is possible to construct a structure in which the breakage of the flow-through portion, which causes problems when expansion and contraction is mainly caused by the flow-through portion, is unlikely to occur. According to the above structure, if the hose structure according to the present invention has the same structure, it is possible to provide a structure capable of deforming with the fluid while suppressing the breakage of the portion for supplying the flow.

Furthermore, in the hose structure of the same aspect of the present invention, the through-flow member is formed in a substantially oval cross section. In a state where fluid is flowing through the through-flow member, the telescopic member is stretched to form a state in which the through-flow member is fully extended with this state. On the other hand, in a state where no fluid is flowing through the flow-through member, the telescopic member is contracted, and the flow-through member is contracted and folded into a spiral state along with this state. According to the hose structure of the present invention, when the through-flow member is formed into a substantially oval cross section, the hose of the present invention is formed in a substantially circular shape as compared to, for example, a normal through-flow member of the hose. When shrinking into a spiral shape, it is easier to unify the bending direction when folded in a predetermined direction. Due to this feature, when the telescopic member is contracted, it is easy to smoothly contract into a spiral shape, so that the through-flow member can properly drain the water accumulated in the through-flow member by the force of the contraction. As described above, the hose structure according to the present invention can improve drainage.

In the flow-through member, the thickness of the long-axis portion facing in the long-axis direction of the cross section may be thicker than the thickness of the short-axis portion facing in the short-axis direction. By thickening the long-axis portion and thinning the short-axis portion, the portion (the short-axis portion) where the through-flow member is easily deformed is determined, so the bending direction when it is contracted into a spiral shape is easier to unify and can be folded more smoothly. In addition, since the long-axis part is hardened due to thickening and becomes a part that is not easily deformed, as a result, this part can be ensured as a water-passing area, and the drainage function (drainability) during folding can be improved, and the water permeability at the initial stage of water passing can be improved. . Furthermore, by making the short-axis portion thin, it is easy to stretch even at low water pressure. At the same time, by thickening the long-axis portion, it can be prevented from being too large due to the expansion or expansion of the through-flow member more than necessary. The load applied to the flow-through member and the member (external member) that covers the flow-through member.

In the flow-through member, the short-axis portions facing each other in the short-axis direction may also be deformed in a direction approaching each other. By deforming the opposite part in the short-axis direction toward the central direction, the easily deformable part (short-axis part) of the through-flow member can be determined, and the bending direction when contracted into a spiral shape is easier to unify and can be smooth For folding. In addition, by unifying the bending direction, a part (long axis part) that is not easily deformed is determined, so that this part can be ensured as a water-passing area, and the drainage effect (drainability) during folding is improved, and the initial Improved water permeability.

The through-flow member may be provided with a reinforcing member at a major axis portion facing in the major axis direction of the cross section. The provision of a reinforcing member in the long axis portion determines the easily deformable portion (short axis portion) of the through-flow member, which makes it easier to unify the bending direction when shrinking into a spiral shape, and enables more smooth folding. In addition, the long axis portion is a result of being not easily deformed, so that this portion can be ensured as a water-passing area, and the drainage effect (drainability) during folding is improved, and at the same time, the water permeability at the initial stage of water passing is improved. In addition, by providing a reinforcing member in the long axis portion, it is possible to suppress an excessive load from acting on the through-flow member and the member (external member) covering the through-flow member due to extension or expansion of the through-flow member beyond a necessary degree.

According to the present invention, it is possible to provide a hose structure that can be deformed by the fluid while suppressing breakage of a portion through which the fluid passes.

1, 2, 3, 4, 4X, 5, 6, 7‧‧‧ hose structure

10, 20, 30, 40, 40X, 50, 60, 70‧‧‧ Hose

11‧‧‧ Liquid source connector

12‧‧‧ Nozzle connector

13‧‧‧ Nozzle

14‧‧‧Press handle

15‧‧‧head

16, 26, 76, 86, 96, 106, 116‧‧‧ internal components (through-flow components)

17, 27, 77‧‧‧ external components

18, 28, 33, 52, 62, 78‧‧‧ elastomer

21‧‧‧Water Passage

22‧‧‧ Telescopic mechanism

29‧‧‧ Covered member

31, 51‧‧‧ main hose

32‧‧‧ Telescopic Hose

41‧‧‧Check valve

41X‧‧‧Pressure Control Valve (Reducing Valve)

42‧‧‧Exhaust valve

99, 109, 119‧‧‧ Reinforcement members

Lp‧‧‧ long axis part

Sp‧‧‧ short axis part

Fig. 1 is a perspective view of the hose structure of the first embodiment.

Fig. 2 is an explanatory diagram of deformation as the elastic body expands and contracted. Fig. 2 (a) shows a hose structure in a non-water-permeable state, and Fig. 2 (b) shows a hose structure in a water-permeable state.

FIG. 3 is an explanatory diagram of the deformation of the hose structure in accordance with the expansion and contraction of the elastic body in the second embodiment. FIG. 3 (a) shows the hose structure in a non-water-permeable state, and FIG. 3 (b) shows Water-permeable hose structure.

FIG. 4 is an explanatory diagram of the deformation of the hose structure of the third embodiment as the elastic body expands and contracts. FIG. 4 (a) shows the hose structure in a non-water-permeable state, and FIG. 4 (b) shows The hose structure at the time of starting the water flow, and FIG. 4 (c) shows the hose structure after a period of time from the start of the water flow.

Fig. 5 is an explanatory diagram of the deformation of the hose structure in accordance with the expansion and contraction of the elastic body in the fourth embodiment. Fig. 5 (a) shows the hose structure in a non-water-permeable state, and Fig. 5 (b) is the beginning. Fig. 5 (c) shows the hose structure when the water is passed through.

Fig. 6 is a diagram showing another example of a hose structure according to the fourth embodiment.

Fig. 7 is an explanatory diagram of the deformation of the hose structure according to the fifth embodiment as the elastic body expands and contracted. Fig. 7 (a) shows the hose structure in a non-water-permeable state, and Fig. 7 (b) shows Water-permeable hose structure.

Fig. 8 is an explanatory diagram of the deformation of the hose structure in accordance with the expansion and contraction of the elastic body according to the sixth embodiment. Fig. 8 (a) shows the hose structure in a non-water-permeable state, and Fig. 8 (b) shows Water-permeable hose structure.

Fig. 9 is an explanatory diagram of a hose structure according to a seventh embodiment.

Fig. 10 is a cross-sectional view of internal components included in the hose structure shown in Fig. 9.

Fig. 11 is a cross-sectional view of internal components included in the hose structure of the eighth embodiment.

Fig. 12 is a cross-sectional view of internal components included in the hose structure of the ninth embodiment.

[First Embodiment]

The first embodiment will be described in detail below with reference to the drawings. In the description, the same elements or elements with the same functions are marked with the same symbols, and repeated descriptions are omitted.

(Hose structure)

As shown in FIG. 1, the hose structure 1 includes a hose portion 10, a liquid source connector 11, a nozzle connector 12, and a nozzle portion 13. The hose structure 1 is configured to be portable and has a function of supplying a liquid (fluid) such as water from a supply source (liquid source) outside or inside the house. In addition, in the present embodiment, the hose structure 1 for supplying a fluid is described by taking an example of supplying a liquid, but it is also possible to supply a gas.

The hose portion 10 is a long hollow tube for conveying liquid supplied from a liquid source. The hose portion 10 conveys a liquid such as water. Although the hose portion 10 is described as a pipe for conveying water in the present embodiment, it is not limited to this, and other liquids may be conveyed, for example. Although the hose portion 10 is described as being connected to a water supply device (for example, a water tap) as a liquid source via the liquid source connector 11, it is not limited to this, and may be connected not only through the liquid source connector 11 but also through another hose And so indirectly connected to water supply equipment. In a water-passing state (a state where water is flowing), the hose portion 10 is fully stretched due to water pressure, and in a non-water-passing state (a state where water is not flowing), the water pressure is released and folded. Status (the status shown in Figure 1). The details of the hose portion 10 will be described later.

The liquid source connector 11 is a connector that connects the water supply equipment and the hose portion 10. The liquid source connector 11 is connected to the proximal end side of the hose portion 10. That is, the liquid source connector 11 is an inflow port through which water is transferred from the water supply equipment to the flexible pipe section 10.

The nozzle connector 12 is a connector that connects the hose portion 10 and the nozzle portion 13. The nozzle connector 12 is connected to the front end side of the hose part 10. That is, the nozzle connector 12 is an outflow port through which water is transferred from the hose portion 10 to the nozzle portion 13.

The nozzle part 13 is a sprinkler nozzle which sprays the water sent from a water supply equipment to a water supply target via the hose part 10. The nozzle portion 13 includes a pressure handle 14 and a water outlet head 15. The nozzle portion 13 sprays water from the water outlet 15 by the user pressing (pressing in) the handle 14.

(Detailed structure of the hose section)

Next, the details of the hose portion 10 will be described with reference to FIG. 2. The hose portion 10 includes an inner member 16 (a flow-through member), an outer member 17 and an elastic body 18 (a telescopic member). The base end of the inner member 16, the outer member 17 and the elastic body 18 are all connected to the liquid source connector 11, and the ends are connected to the nozzle connector 12.

The internal member 16 and the external member 17 are formed in the form of a convex fold and a concave fold repeatedly in a cross section cut along the longitudinal direction, in other words, they are corrugated pipe members (refer to FIG. 2 (a)). . In the water-passing state, the heights of the above-mentioned convex folds and concave folds of the inner member 16 and the outer member 17 are reduced, and they extend outward in the longitudinal direction (see FIG. 2 (b)). In the non-water-permeable state, the heights of the convex folds and the concave folds are high, and they are apparently contracted toward the long side (see FIG. 2 (a)). When the water-permeable state is set to the non-water-permeable state, although the internal member 16 and the external member 17 have a contraction force to some extent, the contraction force can only make the long side of the hose portion 10 The directional length is slightly reduced. Therefore, the hose part 10 is provided with the elastic body 18, and is comprised so that the length of the longitudinal direction may be shortened by the contraction force of the elastic body 18 when it changes from a water-permeable state to a non-water-permeable state.

That is to say, by the existence of the elastic body 18, the hose portion 10 can be contracted to a predetermined length in the non-water-permeable state (the initial length A of the non-water-permeable state), and in the case of not having the contraction function of the elastic body 18, The hose part 10 cannot shrink to the initial length A of the non-water-permeable state. When the length of the hose portion 10 is set to the non-water-permeable imaginary length B in the non-water-permeable state without the shrinkage function of the elastic body 18, A / B is set to, for example, about 0.3 to 0.5. When A / B is smaller than this value, the load of the elastic body 18 in the stretched state is large, and the elasticity of the elastic body 18 is liable to decrease. When A / B is larger than this value, problems such as deterioration of the shrinkage function of the hose portion 10 and increased elasticity of the inner member 16 and the outer member 17 may easily cause cracks due to repeated use. Based on these factors, A / B can be around 0.4, for example.

When the length of the hose portion 10 in a non-water-permeable state (a state in which water flows from the inside to the outside only reaches the shrinkage amount of the hose) is set to L1, and the liquid is circulated at a predetermined water pressure (for example, 0.15Mpa to 0.4Mpa) When the length of L is L2, L1 / L2 is set to 0.3 to 0.7. If L1 / L2 is less than this value, each member is liable to deteriorate due to repeated use. Therefore, L1 / L2 can be 0.4 or more, or even 0.45 or more. Moreover, if L1 / L2 is larger than this value, it will become difficult to shorten (it will not shrink easily). Therefore, L1 / L2 can be 0.6 or less, or even 0.55 or less.

The internal member 16 is a water passage through which water is supplied. The inner member 16 itself may be made of a material having elasticity, or may be made of a material having no elasticity. The internal member 16 is made of materials such as polyvinyl chloride, silicon, elastomer, polyurethane, and fluororesin. The length in the extending direction of the internal member 16 is set in a range of, for example, 5 m to 50 m, for example, 15 m. The inner diameter of the internal member 16 (inner diameter when water is flowing) is set at, for example, 7mm to 15mm range, such as 12mm to 13.5mm.

The outer member 17 is a member that covers the inner member 16. The outer member 17 itself may be made of a stretchable material, or may be made of a non-stretchable material. The outer member 17 is made of a material such as copolyester and nylon. The extension direction length of the outer member 17 is set in a range of, for example, 5 m to 50 m, for example, 15 m. The inner diameter of the outer member 17 (inner diameter when passing water) can be enlarged, for example, to be larger than the inner diameter of the inner member 0mm to About 2mm.

The elastic body 18 is a rope-like elastic member that extends along the internal member 16 and is configured to expand and contract in the extending direction (longer direction) of the internal member 16 in accordance with the liquid passing state in the internal member 16. The elastic body 18 is provided as a separate member from the internal member 16 and the external member 17. The elastic body 18 is disposed between the inner member 16 and the outer member 17 (between radial directions). That is, the elastic body 18 is disposed outside the inner member 16 and inside the outer member 17. The elastic body 18 is arranged in a biased state in a predetermined region in the circumferential direction of the internal member 16 (see FIGS. 2 (a) and (b)).

In a state in which water flows through the internal member 16 (water-passing state), the elastic body 18 is extended in the extending direction of the internal member 16 (see Fig. 2 (b)) by water pressure. Furthermore, in a state where water is not flowing in the internal member 16 (non-water-permeable state), the elastic body 18 returns to its original length (shrinkage) due to the elimination of the water pressure (see FIG. 2 (a)). The "stretching" and "contracting" of the elastic body 18 refer to a case where the length of the extending direction is actually expanded and contracted in the extending direction. Moreover, as the elastic body 18 expands and contracts in the extending direction, the apparent lengths of the inner member 16 and the outer member 17 also change. That is, as shown in FIG. 2 (b), in the water-passing state, as the elastic body 18 is extended in the extending direction, the internal member 16 and the external member 17 are in a fully extended state. On the other hand, as shown in FIG. 2 (a) and FIG. 1, in the non-water-permeable state, as the elastic body 18 contracts in the extending direction (returns to its original length), the internal member 16 and the external member 17 contract. It is, for example, a spiral shape and is in a folded state.

The elastomer 18 is made of, for example, a natural rubber, a nitrile rubber, an ethylene-propylene rubber, a silicone rubber, or a fluoro rubber. The length in the extending direction of the elastic body 18 is set to 50% to 80%, for example, 7.5m to 12m, in a state of being stretched by, for example, water pressure in a normal state (contracted state).

In order to increase the shortenable length of the hose portion 10, the elastic body 18 may be linear in a non-water-permeable state (however, it may be bent by bending the hose portion 10 itself). May be spiral. In addition, the elastic body 18 is a solid elastic member in order to take into account the expansion of the shrinking force and the reduction of the cross-sectional area. The elastic body 18 may be a hollow elastic member.

(Effectiveness of the first embodiment)

As described above, the hose structure 1 according to this embodiment includes the internal member 16, water supply and circulation, and the elastic body 18. The elastic member 18 is provided as a separate member from the internal member 16 and extends along the internal member 16. The inner member 16 expands and contracts in the extending direction of the inner member 16 in accordance with the liquid-permeable state in the inner member 16.

In such a hose structure 1, the elastic body 18, which is a member different from the internal member 16, can expand and contract in the extending direction of the internal member 16 in accordance with the liquid-passing state of the internal member 16. Since the elastic body 18 extends along the internal member 16, the internal member 16 is deformed as the elastic body 18 expands and contracts. With this configuration, in the hose structure 1, the liquid passing portion (internal member 16) is separated from the telescopic portion (elastic body 18), so the liquid passing portion can be deformed (for example, stored in a compact and compact form), and It is not necessary to extend or contract the liquid passing part. With this design, the resulting structure makes it difficult for breakage of the liquid supply part that would cause problems when the liquid supply part is mainly caused by expansion and contraction. As described above, according to the hose structure 1, it is possible to provide a structure that can suppress the breakage of the portion through which the liquid is supplied, and can deform with the liquid.

The hose structure 1 further includes an outer member 17 that covers the inner member 16, and the elastic body 18 is provided as a separate member from the inner member 16 and the outer member 17. With this structure, the external member 17 can be used to cover the internal member 16 as a part for supplying liquid, and the internal member 16 is more difficult to be damaged while being made into a different member from the internal member 16 and the external member 17 The elastic body 18 appropriately deforms the inner member 16 and the outer member 17.

The elastic body 18 is disposed between the inner member 16 and the outer member 17. With this configuration, the influence caused by the expansion and contraction of the elastic body 18 can be effectively applied to both the internal member 16 and the external member 17, and the internal member 16 and the external member 17 can be more appropriately deformed. In addition, since the elastic body 18 can be formed so as not to be in contact with water flowing through the inner member 16, the deterioration of the elastic body 18 due to contact with water can be suppressed.

The elastic body 18 is biased and arranged in a predetermined region in the circumferential direction of the inner member 16. When the elastic body is arranged in various regions in the circumferential direction of the internal member, the elastic body and the internal member are easily entangled when the elastic body expands and contracted, and the internal member is difficult to deform and the liquid permeability of the internal member may be deteriorated. In this regard, since the elastic body 18 is biased and arranged in a predetermined region in the circumferential direction of the internal member 16, the internal member 16 becomes a structure that is easily deformed, and at the same time, the liquid permeability of the internal member 16 can be ensured.

In addition, since the internal member 16 is folded by using the elastic body 18 which is a separate body, the elongation of the hose is easily adjusted by adjusting the length of the elastic body 18.

[Second Embodiment]

Next, the hose structure 2 according to the second embodiment will be described with reference to FIG. 3. It should be noted that in the description of the present embodiment, a part different from the first embodiment will be mainly described.

As shown in FIG. 3 (a) and FIG. 3 (b), the hose portion 20 of the hose structure 2 of the second embodiment includes: a water passing mechanism 21 related to water passing; and expansion and contraction in an extending direction. Related telescopic mechanism 22.

The water passing mechanism 21 includes an inner member 26 and an outer member 27. The structure of the internal member 26 is the same as the internal member 16 of the first embodiment, and the structure of the external member 27 is the same as the external member 17 of the first embodiment. That is, the internal member 26 is a water-passing passage through which water is supplied, and the external member 27 is a member that covers the internal member 16.

The telescopic mechanism 22 is provided along the extending direction of the water passing mechanism 21 (more specifically, the external member 27). The telescopic mechanism 22 includes an elastic body 28 and a covering member 29. The elastic body 28 is made of the same material as the elastic body 18 of the first embodiment, and is disposed outside the outer member 27. The elastic body 28 extends in the extending direction of the inner member 26 and the outer member 27. The covering member 29 is a member that covers the elastic body 28 disposed on the outer side of the outer member 27 and extends in the extending direction of the inner member 26 and the outer member 27. The covering member 29 is provided so as to be connected to the outer member 27 in a predetermined area in the circumferential direction of the outer member 27. The covering member 29 is made of, for example, the same material as the outer member 27, such as copolyester and nylon.

In this way, the hose portion 20 of the hose structure 2 according to the second embodiment is provided as a region (room) of the water passing mechanism 21 separated by the external member 27 and a telescopic mechanism 22 separated by the covering member 29. The structure of the two rooms, such as the area (room). Further, as shown in FIG. 3 (b), as the elastic body 28 of the telescopic mechanism 22 is extended in the extending direction in the water passing state, the covering member 29 of the telescopic mechanism 22 and the internal member 26 and the outside of the water passing mechanism 21 The member 27 will reach a fully extended state. On the other hand, as shown in FIG. 3 (a), in the non-water-permeable state, as the elastic body 28 contracts in the extending direction (returns to its original length), the covering member 29, the inner member 26, and the outer member 27 will It is contracted into, for example, a spiral shape, and is in a folded state.

As described above, in the hose structure 2 according to the second embodiment, the elastic body 28 is disposed outside the outer member 27. For example, when the internal member is close to the elastic body, the internal member and the stretchable elastic body may be entangled when water flows to the internal member. In this case, there is a possibility that problems such as difficulty in deformation of the internal member and deterioration in water permeability of the internal member may occur. In this regard, by arranging the elastic body 28 further outside than the external member 27, it is possible to effectively prevent the internal member 26 and the elastic body 28 from being entangled when passing through water, so that the internal member 26 becomes a structure that is easily deformed, and at the same time, The water permeability of the inner member 26 is ensured.

In addition, the hose structure 2 includes a covering member 29 that covers an elastic body 28 disposed outside the outer member 27. With this configuration, the area (cavity) of the water-passing mechanism 21 composed of the internal member 26 and the external member 27 and the expansion-contraction mechanism 22 composed of the elastic body 28 and the covering member 29 can be used. The area (cavity) is separated, which can effectively suppress the influence of the expansion and contraction of the elastic body 28 on the internal member 26 and the external member 27 for water passing.

[Third Embodiment]

Next, a hose structure 3 according to a third embodiment will be described with reference to FIG. 4. It should be noted that in the description of this embodiment, a description will be given mainly of parts different from those of the first and second embodiments.

As shown in FIGS. 4A to 4C, the hose portion 30 of the hose structure 3 according to the third embodiment includes a main hose 31, a telescopic hose 32, and an elastic body 33. The base ends of the main hose 31, the telescopic hose 32, and the elastic body 33 are all connected to the liquid source connector 11, and the ends are connected to the nozzle connector 12.

The main hose 31 is a corrugated tubular hose configured to expand and contract in the water feeding direction. The main hose 31 is made of, for example, polyester, nylon, polyvinyl chloride, soft polyvinyl chloride, soft polypropylene, soft polyethylene, ethylene / vinyl acetate copolymer, or a polyester or nylon woven fabric coating Made of resin. The main hose 31 has a cylindrical structure and has a structure called a convex fold and a concave fold. With this structure, the main hose 31 can be extended and contracted in the extending direction, and a closed space capable of changing the volume can be formed. The length of the main hose 31 in the extending direction is usually set in a range of 5 m to 50 m, for example, 7.5 m. The length in the extending direction of the main hose 31 is set to be 2 to 3 times, for example, 15 m, in a state of being stretched by water pressure, for example, in a contracted state.

The telescopic hose 32 is a corrugated tubular hose that passes through the inside of the main hose 31 and is expandable and contractible in the direction of water supply. The telescopic hose 32 is made of a material such as polyester, nylon, polyvinyl chloride, soft polyvinyl chloride, soft polypropylene, soft polyethylene, ethylene / vinyl acetate copolymer, or coated with polyester or nylon woven fabric Made of resin. The telescopic hose 32 has a cylindrical structure and is provided with a structure called a convex folding and a concave folding repeatedly. With this structure, the telescopic hose 32 can be extended and contracted in the extending direction, and a closed space capable of changing the volume can be formed. The telescopic hose 32 is closed by being connected to the front end portion of the nozzle connector 12. The extension length of the telescopic hose 32 is set in a range of, for example, 5 m to 50 m, for example, 7.5 m in a normal period (contracted state). Moreover, the length of the main hose 31 in the extending direction is set to be 2 to 3 times, for example, 15 m, in the contracted state in the state extended by water pressure.

The elastic body 33 is an elastic member that passes through the inside of the telescopic hose 32. The elastic body 33 is made of, for example, the same material as the elastic body 18 of the first embodiment.

In the hose portion 30 of the hose structure 3 according to the third embodiment, in a non-water-permeable state, as shown in FIG. 4 (a), the elastic body 33 is in an unstretched state, and the main hose 31 and the telescope are expanded and contracted. The hose 32 is in a contracted state. As shown in FIG. 4 (b), when the water flows from the liquid source connector 11 to the inside of the main hose 31 from this state, and the area outside the telescopic hose 32 becomes a water-permeable state, the elastic body 33 may be As shown in FIG. 4 (c), the main hose 31 and the telescopic hose 32 are extended in the extending direction by the water pressure, and the main hose 31 and the telescopic hose 32 are fully extended in this state. Then, when the water supply is stopped and it becomes a non-water-permeable state, the main hose 31 and the telescopic hose 32 are again in a contracted state as shown in FIG. 4 (a).

In such a hose portion 30, since the elastic body 33 expands and contracts basically only in the longitudinal direction (the telescopic direction), the frictional resistance with the telescopic hose 32 is small. With this feature, even when the elastic body 33 is repeatedly expanded and contracted, breakage and the like are unlikely to occur, and a structure with high durability can be realized.

In addition, because the elastic body 33 passes through the inside of the telescopic hose 32 and water flows through the outside of the telescopic hose 32 (the elastic body 33 is not a water-passing member), even if the elastic body 33 wears, the hose The portion 30 does not leak or break.

Further, since the elastic body 33 is not a water-passing member, the main telescopic structure (the elastic body 33 in the hose portion 30) can be formed thin. With this feature, the elastic body 33 can be easily stretched, and the water pressure for expanding and contracting the elastic body 33 can be set to be low. That is, the usable water pressure range is expanded.

[Fourth Embodiment]

Next, a hose structure 4 according to a fourth embodiment will be described with reference to FIG. 5. It should be noted that in the description of this embodiment, a description will be given mainly of parts different from those of the first to third embodiments.

The basic structure of the hose portion 40 of the hose structure 4 of the fourth embodiment shown in FIGS. 5 (a) to (c) is similar to that of the hose portion 30 of the hose structure 3 of the third embodiment described above. Similarly, the main hose 31, the telescopic hose 32, and the elastic body 33 are provided. In addition to these configurations, the hose portion 40 is further provided with a check valve 41 and a discharge valve 42 on the base end side (the liquid source connector 11 side).

The check valve 41 is a valve for suppressing the contraction of the telescopic hose 32 even when the pressure in the flow path is reduced even after the water flow is completed (see FIG. 5 (c)). That is, the check valve 41 limits the pressure applied to the telescopic hose 32. In addition, by controlling the discharge valve 42, the telescopic hose 32 can be arbitrarily contracted and stored. The discharge valve 42 may be provided on the nozzle connector 12 side. With this configuration, the pressure load acting on the telescopic hose 32 can be reduced, and durability can be improved.

The hose portion 40X of the hose structure 4X shown in FIG. 6 may be used instead of the hose portion 40 of the hose structure 4. The basic structure of the hose portion 40X is the same as that of the hose portion 40 described above, and includes a pressure control valve 41X (pressure reducing valve) instead of the check valve 41 and the discharge valve 42. The pressure control valve 41X is a liquid source connector 11 provided on the primary side of the hose portion 40X, and controls the pressure applied to the telescopic hose 32. With this configuration, the pressure load acting on the telescopic hose 32 can be reduced, and durability can be improved.

[Fifth Embodiment]

Next, a hose structure 5 according to a fifth embodiment will be described with reference to FIG. 7. It should be noted that in the description of the present embodiment, a description will be given mainly of parts different from those of the first to fourth embodiments.

As shown in FIGS. 7 (a) and 7 (b), the hose portion 50 of the hose structure 5 according to the fifth embodiment includes a main hose 51 and an elastic body 52. Both the base end of the main hose 51 and the elastic body 52 are connected to the liquid source connector 11, and the front end is connected to the nozzle connector 12.

The main hose 51 is a corrugated tubular hose configured to expand and contract in the water feeding direction. The main hose 51 is made of the same material as the main hose 31 of the third embodiment, for example.

The elastic body 52 is an elastic member that passes through the inside of the main hose 51. The elastic body 52 is made of the same material as the elastic body 33 of the third embodiment, for example.

In the hose portion 50 of the hose structure 5 according to the fifth embodiment, in a non-water-permeable state, as shown in FIG. 7 (a), the elastic body 52 is not stretched, and the main hose 51 and the elastic body 52 is the contracted state. When water flows from the liquid source connector 11 to the area inside the main hose 51 and outside the elastic body 52 from this state, and the water is in a water-permeable state, as shown in FIG. 7 (b), the water pressure can be used to The elastic body 52 is extended in the extending direction, and the main hose 51 is fully extended in this state. Then, when the water supply is stopped and it becomes a non-water-permeable state, the main hose 51 returns to a contracted state as shown in FIG. 7 (a).

In such a hose portion 50, when the elastic body 52 is extended in the extending direction in a water-passing state, the thickness of the elastic body 52 is thin, and the water-passing area (the area located inside the main hose 51 and outside the elastic body 52) is wide. Sprinkles efficiently. Moreover, when the non-water-permeable state is contracted, the thickness of the elastic body 52 is relatively thick, and the water-passing area is narrow. Therefore, the retained water in the hose portion 50 can be efficiently discharged.

In addition, for the same reason as the hose portion 30 of the third embodiment, a structure in which the elastic body 52 is not easily broken, and a structure in which the hose portion 50 is unlikely to leak even when the elastic body 52 is worn, and can be used Structure with a wide range of water pressure.

[Sixth Embodiment]

Next, a hose structure 6 according to a sixth embodiment will be described with reference to FIG. 8. It should be noted that in the description of the present embodiment, a description will be given mainly of parts different from the first to fifth embodiments.

The basic structure of the hose portion 60 of the hose structure 6 of the sixth embodiment shown in FIGS. 8 (a) and (b) is the same as that of the hose portion 50 of the hose structure 5 of the fifth embodiment. the same. The hose portion 60 includes an elastic body 62 instead of the elastic body 52 of the hose portion 50.

The elastic body 62 is made of the same material as the elastic body 52 of the fifth embodiment, but its arrangement is different from that of the elastic body 52. That is, the elastic body 62 is arranged in a biased state in a predetermined region (lower part in FIG. 8) in the circumferential direction of the main hose 51.

In the configuration in which the hose is expanded and contracted by water pressure, if the friction between the hose and an elastic body such as a rubber tube is large, the hose is less likely to expand and contract, and there is a problem that the usable water pressure increases. In this regard, in the hose portion 60, since the elastic body 62 is disposed in a biased state in a predetermined area in the circumferential direction of the main hose 51 (the lower part in FIG. 8), the main hose 51 and the elastic body can be disposed. The contact area of 62 is limited to reduce the friction between the main hose 51 and the elastic body 62. With this configuration, the usable water pressure range is expanded.

[Seventh embodiment]

Next, a hose structure 7 according to a seventh embodiment will be described with reference to FIGS. 9 and 10. It should be noted that in the description of this embodiment, a description will be given mainly of parts different from those in the first to sixth embodiments.

As shown in FIG. 9, the hose portion 70 of the hose structure 7 according to the seventh embodiment includes an inner member 76 (a flow-through member), an outer member 77, and an elastic body 78 (a telescopic member). The internal member 76, the external member 77, and the elastic body 78 are all connected to the liquid source connector at the base end (not shown in Fig. 9, please refer to "liquid source connector 11" in Fig. 1), and the front end is connected to the tube Nozzle connector (not shown in Figure 9, please refer to "Nozzle connector 12" in Figure 1). The external member 77 has the same structure as the external member 17 of the first embodiment, for example. The elastic body 78 has the same configuration as the elastic body 18 of the first embodiment, for example. Hereinafter, a detailed configuration of the internal member 76 will be described with reference to FIG. 10.

The internal member 76 is a water flow path through which water is supplied. The material of the internal member 76 and the length in the extending direction are the same as those of the internal member 16 of the first embodiment, for example. As shown in FIG. 10, the cross section of the internal member 76 orthogonal to the axis of the internal member 76 is formed into a substantially elliptical shape. The term "substantially elliptical" does not only mean a complete ellipse, but also includes a shape that looks closer to an oval than a true circle. The length (longer diameter) of the long axis La of the internal member 76 is set to, for example, about 2 to 3 times the length (shorter diameter) of the short axis Sa of the internal member 76. The length of the short axis Sa is set in a range of, for example, 5 mm to 8 mm, and the length of the long axis La is set to a length corresponding to the proportion of the short axis Sa described above.

In the cross section shown in FIG. 10, the wall thickness t1 (thickness) of the long axis portion Lp of the inner member 76 facing in the direction of the long axis La of the substantially elliptical shape is smaller than that of the short axis portion Sp facing in the short axis Sa direction. The wall thickness t2 (thickness) is thicker. The internal member 76 is formed such that the wall thickness gradually increases from the short-axis portion Sp toward the long-axis portion Lp. In order to make the internal member 76 have a difference in hardness, it is necessary to make the internal member 76 susceptible to deformation (short axis portion Sp). It is preferable that the thickness of the wall thickness t1 is sufficiently larger than the wall thickness t2. For example, the wall thickness t1 is formed as a wall The thickness t2 is 1.2 times or more, and more preferably 1.3 times or more. On the other hand, if the wall thickness t1 of the long-axis portion Lp is too thick, the flexibility of the hose portion 70 itself will be lost, and the usability of the hose portion 70 will be deteriorated. From this viewpoint, the wall thickness t1 is preferably set to, for example, 2 times or less, and more preferably 1.5 times or less. The wall thickness t2 of the short-axis portion Sp is preferably set to 0.3 mm or more from the viewpoint that the internal member 76 is easily expanded by water pressure; the wall thickness t2 is preferably 0.6 mm from the viewpoint of preventing damage due to water pressure From the above, especially from the viewpoint of affecting the stretch-drag durability due to repeated use, the wall thickness t2 is preferably 1.0 mm or more. On the other hand, from the viewpoint of preventing the internal member 76 from expanding easily due to water pressure, the wall thickness t2 is preferably 1.5 mm or less, and from the viewpoint of being usable even at low water pressure, the wall thickness t2 is preferably 1.2 mm or less. . The wall thickness t1 of the long axis portion Lp is set to a thickness corresponding to the ratio of the wall thickness t2.

Further, in the cross section shown in FIG. 10, the short axis portions Sp and Sp of the inner member 76 in the direction of the short axis Sa are recessed and deformed toward each other in a direction close to the center of the ellipse to form a cross section. For glasses. The amount of deformation (amount of depression on one side) of the short-axis portion Sp is, for example, about 0% to 20% of the separation distance between the short-axis portion Sp and Sp in an undeformed state. That is, for example, if the separation distance between the short-axis portions Sp and Sp in the undeformed state is 7 mm, the deformation amount (the amount of depression on one side) of the short-axis portion Sp is about 0 mm to 1.4 mm.

As described above, the hose structure 7 according to the seventh embodiment includes the inner member 76 having a substantially oval cross section. In such a hose structure 7, the elastic body 78 is stretched in a state where a liquid flows through the inner member 76, and the inner member 76 is completely stretched in accordance with this situation. On the other hand, in a state where no liquid flows through the inner member 76, the elastic body 78 contracts, and the inner member 76 contracts and folds into a spiral state in accordance with this situation. In the case of the hose structure 7, when the internal member 76 is formed into a substantially elliptical cross-section, compared to, for example, the case where the internal member is formed into a true circular cross-section in a general hose, It is easier to unify the bending direction when folding in a predetermined direction. Thereby, when the elastic body 78 is contracted, the inner member 76 can be easily contracted into a spiral shape, and the water retained in the inner member 76 can be appropriately discharged by the force of the contraction into a spiral shape. As described above, the drainage structure can be improved by the hose structure 7.

In the cross section of the internal member 76, the wall thickness t1 of the long-axis portion Lp facing in the long-axis La direction is thicker than the wall thickness t2 of the short-axis portion Sp facing in the short-axis Sa direction. Since the long-axis portion Lp is thicker and the short-axis portion Sp is thinner, it is possible to determine a portion (the short-axis portion Sp) that is easily deformed in the internal member 76, and it is easier to unify the bending direction when contracted into a spiral shape, so it can be smooth To fold. In addition, the long-axis portion Lp is thick and hard to be deformed. Since this portion can be ensured as a water-passing area, the drainage effect (drainability) during folding can be improved, and the water permeability at the initial stage of water passing can be improved. In addition, the thickness of the short-axis portion Sp is reduced to form a structure that is easy to stretch even at low water pressure. At the same time, the thickness of the long-axis portion Lp is thickened, which can prevent the flow member from expanding or expanding beyond the necessary level. Too much load is applied to the internal member 76 and the member (external member 77) covering the internal member 76.

Further, the short-axis portions Sp and Sp, which are opposed to each other in the short-axis Sa direction, are deformed in a direction approaching each other, and the inner member 76 is formed into a spectacles shape in cross section. By deforming the portion facing in the direction of the minor axis Sa toward the central direction, the easily deformable portion (the minor axis portion Sp) of the internal member 76 can be determined more clearly, and the bending direction when contracted into a spiral shape is more easily unified, and To fold more smoothly. In addition, by unifying the bending direction, it is possible to determine the part that is not easily deformed (the long axis part Lp), so that this part can be ensured as a water-passing area, and the drainage function (drainability) during folding is improved, and the water flow is improved. Initial water permeability.

[Eighth Embodiment]

Next, a hose structure according to an eighth embodiment will be described with reference to FIG. 11. The basic structure of the hose structure of this embodiment is the same as that of the hose structure 7 of the seventh embodiment described above, and only the structure of the internal components is partially different. In the following description, the structure of the hose structure according to the eighth embodiment is different from that of the hose structure 7 according to the seventh embodiment.

As shown in FIG. 11, the internal member 86 (flow-through member) of the hose structure of the eighth embodiment is the same as the internal member 76 described above, and the cross section orthogonal to the axis is formed in an approximately elliptical shape. The wall thickness t1 (thickness) of the long-axis portion Lp facing in the opposite direction is thicker than the wall thickness t2 (thickness) of the short-axis portion Sp facing in the short-axis Sx direction. On the other hand, the inner member 86 is different from the above-mentioned inner member 76 having a spectacle-shaped cross-section, and the short-axis portions Sp and Sp opposite to each other in the short-axis Sx direction are not deformed (not recessed toward the substantially elliptical center direction). Since the short-axis portion Sp of the inner member 86 is not recessed toward the center, the short-axis Sx is longer than the short-axis Sa of the inner member 76 having a spectacle-shaped cross section.

Even in the internal member 86 not provided with a cut-glass type, by thickening the long-axis portion Lp and thinning the short-axis portion Sp, the easily deformable portion (the short-axis portion Sp) of the internal member 86 can be determined. It is easier to unify the bending direction when shrinking into a spiral shape, so that it can be folded more smoothly. In addition, the long axis part Lp becomes thicker and becomes harder to deform. As a result, this part can be ensured as a water-passing area, so the drainage effect (drainability) during folding can be improved, and the water permeability at the initial stage of water passing can be improved. enhance. In addition, because the short-axis portion Sp becomes thin, a structure that is easy to stretch even at low water pressure is formed. At the same time, the long-axis portion Lp is thickened, which can prevent excessive load from acting on the inside due to the expansion or expansion of the through-flow member more than necessary. A case of the member 86 and a member (external member) covering the internal member 86.

[Ninth Embodiment]

Next, a hose structure according to a ninth embodiment will be described with reference to Fig. 12. The basic structure of the hose structure of the present embodiment is the same as that of the hose structure 7 of the seventh embodiment described above, and there are only partial differences in the structure of the internal components. In the following description, the configuration of the hose structure of the ninth embodiment which is different from the hose structure 7 of the seventh embodiment will be mainly described.

As shown in Figs. 12 (a) to 12 (c), the internal components 96 (refer to Fig. 12 (a)) and 106 (refer to Fig. 12 (b)) of the hose structure of the ninth embodiment. The reference numerals 116 and 116 (see FIG. 12 (c)) are the same as those of the internal member 76, and the cross-section orthogonal to the axis line is substantially elliptical. On the other hand, the internal members 96, 106, 116 are different from the above-mentioned internal member 76 whose cross-section is a glasses type, and are not formed into a cross-sectional glasses type.

Further, among the inner members 96, 106, and 116, reinforcing members 99, 109, and 119 are respectively provided in the long axis portions Lp facing each other in the long axis direction of the cross section.

As shown in FIG. 12 (a), the internal member 96 includes, as the above-mentioned reinforcing member, a reinforcing member 99 extending outward from the long-axis portion Lp in the long-axis direction. Unlike the above-mentioned internal member 76, the internal member 96 sets the wall thicknesses of the long-axis portion Lp and the short-axis portion Sp to the same degree. The inner member 96 is provided with a reinforcing member 99, and a tensile force acting outward is applied to the long axis portion Lp. With this configuration, as in the case where the thickness of the long-axis portion Lp is thickened, the long-axis portion Lp becomes a portion that is difficult to deform, and the easily deformed portion (the short-axis portion Sp) becomes clear and shrinks into a spiral. The bending direction can be unified when it is shaped.

Further, as shown in Fig. 12 (b), the inner member 106 is provided with a reinforcing member 109 as the above-mentioned reinforcing member inside the long axis portion Lp (the center side of the ellipse). The reinforcing member 109 extends along the long axis portion Lp of the inner member 106 in the axial direction. The reinforcing member 109 is integrally formed of the same material as the other parts of the internal member 106, for example. As shown in FIG. 12 (c), the inner member 116 is provided with a reinforcing member 119 as the above-mentioned reinforcing member on the inner side (the center side of the ellipse) of the long axis portion Lp. The reinforcing member 119 extends along the long axis portion Lp of the inner member 106 in the axial direction. The reinforcing member 119 is formed of a material different from that of the other parts of the internal member 106, and is formed of a material such as a thread. Even if the internal members 106 and 116 are provided with a reinforcing member, the wall thickness of the long-axis portion Lp can be made thicker than the wall thickness of the short-axis portion Sp. With such a configuration, the long-axis portion Lp becomes a portion that is difficult to deform, the portion that is easily deformed (the short-axis portion Sp) becomes clear, and the bending direction when it is contracted into a spiral shape is unified.

Claims (11)

    A hose structure includes: a flow-through member for flowing fluid; and a telescopic member provided as a member different from the flow-through member and extending along the flow-through member, and configured to follow the flow-through The flow state in the member expands and contracts in the extending direction of the flow-through member.         The hose structure according to item 1 of the patent application scope further includes an external member that covers the internal member of the flow-through member; the telescopic member is provided as a different member from the internal member and the external member.         The hose structure according to item 2 of the scope of patent application, wherein the telescopic member is disposed between the inner member and the outer member.         The hose structure according to item 3 of the scope of patent application, wherein the telescopic member is biasedly disposed in a predetermined area in a circumferential direction of the inner member.         The hose structure according to item 2 of the scope of patent application, wherein the telescopic member is disposed outside the outer member.         The hose structure according to item 5 of the scope of patent application, further comprising a covering member for covering the telescopic member disposed outside the outer member.         The hose structure according to any of claims 1 to 6 of the scope of patent application, further comprising a pressure reducing valve that controls the pressure applied to the flow-through member.         The hose structure according to item 1 of the scope of patent application, wherein the through-flow member is formed in a substantially oval cross section.         The hose structure according to item 8 of the scope of patent application, wherein, in the cross-section of the flow passage member, the thickness of the long-axis portion facing in the long-axis direction is greater than that of the short-axis portion facing in the short-axis direction. Thicker.         The hose structure according to item 9 of the scope of patent application, wherein the short-axis portions of the through-flow member that are opposite to each other in the short-axis direction are deformed toward each other.         The hose structure according to any one of claims 8 to 10, wherein a cross-section of the flow-through member is provided with a reinforcing member in a long-axis portion opposite to the long-axis direction.