CN110582663A

CN110582663A - Hose structure

Info

Publication number: CN110582663A
Application number: CN201780089948.0A
Authority: CN
Inventors: 前田达也; 惠良秀一
Original assignee: Gao Cheng Of Co Ltd
Current assignee: Gao Cheng Of Co Ltd; Takagi Co Ltd
Priority date: 2017-04-24
Filing date: 2017-04-24
Publication date: 2019-12-17
Anticipated expiration: 2037-04-24
Also published as: CN110582663B; JPWO2018198416A1; WO2018198170A1; CN110546419A; JP6901799B2; CN110546419B; WO2018198416A1; JP6901800B2; TWI783970B; TW201839299A; JPWO2018198170A1

Abstract

A hose structure comprising: an inner member in fluid communication; and an elastic body that is provided separately from the inner member and extends along the inner member, the elastic body being capable of expanding and contracting in the extending direction of the inner member in accordance with the flow state of the inner member.

Description

hose structure

Technical Field

The present disclosure relates to a hose structure.

Background

Patent document 1 discloses a hose that automatically expands in the longitudinal direction due to the pressure of an applied liquid and that automatically expands in the lateral direction.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-249948

Disclosure of Invention

Problems to be solved by the invention

Here, in the hose described in patent document 1, the portion through which the liquid flows can expand and contract, and thus can be deformed by the liquid. In such a hose, if the portion through which the liquid flows is repeatedly expanded and contracted, the portion through which the liquid flows may be damaged. When the portion through which the liquid flows is broken, both the liquid-flowing property and the flexibility of the hose are impaired.

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

Means for solving the problems

A hose structure according to one aspect of the present disclosure includes: a flow-through member in which a fluid flows; and an extensible member that is provided separately from the flow member and extends along the flow member, the extensible member being extensible and contractible in an extending direction of the flow member in accordance with a flow state of the flow member. In the hose structure according to one aspect of the present disclosure, the extensible member that is separate from the flow member is extensible and contractible along the extending direction of the flow member in accordance with the flow state of the flow member. Since such an expansion member extends along the flow member, the flow member deforms in accordance with expansion and contraction of the expansion member. Thus, in the hose structure, the portion (flow member) to be circulated and the portion (expansion/contraction member) to be expanded/contracted are separated, and the portion to be circulated can be deformed (for example, compactly collected) without expanding/contracting the portion to be circulated. This makes it possible to prevent damage to the portion to be circulated, which would be a problem when the portion to be circulated is mainly expanded or contracted. As described above, according to the hose structure according to one aspect of the present disclosure, it is possible to provide a structure that can be deformed by a fluid while suppressing damage to a portion through which the fluid flows.

the hose structure may further include an outer member covering the inner member as the flow member, and the extensible member may be provided separately from the inner member and the outer member. Thus, the inner member, which is a portion through which the fluid flows, is covered with the outer member, so that the inner member is more resistant to breakage, and the inner member and the outer member can be appropriately deformed by the extensible member provided separately from the inner member and the outer member.

The telescopic member may be disposed between the inner member and the outer member. This can effectively give the influence of the expansion and contraction member to both the inner member and the outer member, and can more appropriately deform the inner member and the outer member. Further, since the telescopic member can be configured not to contact the fluid flowing through the inner member, deterioration of the telescopic member due to contact with the fluid can be suppressed.

The telescopic member may be disposed so as to be close to a predetermined region in the circumferential direction of the inner member. When the extensible member is disposed in each region in the circumferential direction of the inner member, the extensible member and the inner member are likely to be entangled when the extensible member is extended or retracted, which may cause problems such as difficulty in deforming the inner member and deterioration in the flow-through property of the inner member. In this regard, since the stretchable member is disposed so as to be close to a predetermined region in the circumferential direction of the inner member, the inner member can be easily deformed, and the flow of the inner member can be ensured.

The telescopic member may be disposed outside the outer member. When the inner member and the extensible member are close to each other, the inner member and the extensible member that extends and contracts may be entangled with each other when the inner member is passed through the inner member. In this case, there is a possibility that the inner member becomes difficult to deform, the flow-through property of the inner member becomes poor, and the like. In this regard, by disposing the extensible member at a position outside the outer member, entanglement of the inner member and the extensible member during circulation or the like can be effectively suppressed, the inner member can be easily deformed, and the flow property of the inner member can be ensured.

The hose structure may further include a covering member covering the extensible member disposed outside the outer member. Thus, the mechanism for circulation (inner member and outer member) composed of the inner member and the outer member and the mechanism for expansion and contraction composed of the expansion and contraction member and the covering member can be separated, and the mechanism (inner member and outer member) for flow communication influenced by expansion and contraction of the expansion and contraction member can be effectively suppressed.

The hose structure may further include a pressure reducing valve for controlling a pressure applied to the flow member. This reduces the load of the pressure applied to the flow member, and improves the durability of the flow member.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present disclosure, it is possible to provide a hose structure that can be deformed according to a fluid while suppressing damage to a portion through which the fluid passes.

Drawings

Fig. 1 is a perspective view of a hose structure according to embodiment 1.

Fig. 2 is a diagram for explaining a deformation according to expansion and contraction of the elastic body, in which fig. 2 (a) shows the hose structure in a non-water-passing state, and fig. 2 (b) shows the hose structure in a water-passing state.

Fig. 3 is a view for explaining a deformation of the hose structure according to expansion and contraction of the elastic body in embodiment 2, in which fig. 3 (a) shows the hose structure in a non-water-passing state, and fig. 3 (b) shows the hose structure in a water-passing state.

Fig. 4 is a diagram for explaining a deformation of the hose structure according to expansion and contraction of the elastic body in embodiment 3, in which fig. 4 (a) shows the hose structure in a non-water-passage state, fig. 4 (b) shows the hose structure at the start of water passage, and fig. 4 (c) shows the hose structure in a state in which time has elapsed from the start of water passage.

Fig. 5 is a diagram for explaining a deformation of the hose structure according to expansion and contraction of the elastic body in embodiment 4, in which fig. 5 (a) shows the hose structure in a non-water-passage state, fig. 5 (b) shows the hose structure at the start of water passage, and fig. 5 (c) shows the hose structure in a state in which time has elapsed from the start of water passage.

fig. 6 is a view showing another example of the hose structure according to embodiment 4.

Fig. 7 is a view for explaining a deformation of the hose structure according to expansion and contraction of the elastic body in embodiment 5, in which fig. 7 (a) shows the hose structure in a non-water-passing state, and fig. 7 (b) shows the hose structure in a water-passing state.

Fig. 8 is a view for explaining a deformation of the hose structure according to expansion and contraction of the elastic body in embodiment 6, in which fig. 8 (a) shows the hose structure in a non-water-passing state, and fig. 8 (b) shows the hose structure in a water-passing state.

Detailed Description

[ embodiment 1 ]

Hereinafter, embodiment 1 will be described in detail with reference to the drawings. In the description, the same elements or elements having the same function are denoted by the same reference numerals, and redundant description thereof is omitted.

(hose structure)

as shown in fig. 1, the hose structure 1 includes: a hose part 10, a liquid source connector 11, a nozzle connector 12, and a nozzle part 13. The hose structure 1 is configured to be transportable, and has a function of supplying a liquid (fluid) such as water from a supply source (liquid source) outdoors or indoors. In the present embodiment, a case where the hose structure 1 for supplying a fluid supplies a liquid will be described, but a hose structure for supplying a gas may be used.

The hose part 10 is an elongated hollow tube for transporting a liquid supplied from a liquid source. The hose portion 10 conveys a liquid such as water. In the present embodiment, a case where the hose portion 10 is used to convey water is described, but the present invention is not limited thereto, and may be used to convey other liquid, for example. The description will be given of a case where the hose portion 10 is connected to a water supply device (for example, a faucet of tap water) as a liquid source via the liquid source connector 11, but the present invention is not limited to this, and the hose portion may be indirectly connected to the water supply device not only via the liquid source connector 11 but also via another hose or the like. The hose portion 10 is in a state of being expanded by the water pressure in a water passage state (a state in which water flows), and in a state of being folded (a state shown in fig. 1) in a state of being released from the water pressure in a non-water passage state (a state in which water does not flow). Details of the hose portion 10 are discussed later.

The liquid source connector 11 is a connector for connecting the water supply device and the hose portion 10. The liquid source connector 11 is connected to the proximal end side of the tube portion 10. That is, the liquid source connector 11 is an inlet for water supplied from the water supply facility to the hose portion 10.

The nozzle connector 12 is a connector for connecting the hose part 10 and the nozzle part 13. The nozzle connector 12 is connected to the distal end side of the hose portion 10. That is, the nozzle connector 12 is an outlet port for water sent from the hose portion 10 to the nozzle portion 13.

The nozzle portion 13 is a watering nozzle for spraying water supplied from the water supply facility through the hose portion 10 to a water supply target. The nozzle section 13 has a lance grip 14 and a nozzle mesh 15. The gun handle 14 of the nozzle portion 13 is gripped (pressed) by a user, and the nozzle portion 13 discharges water from the nozzle net 15.

(details of hose section)

Next, the hose portion 10 will be described in detail with reference to fig. 2. The hose portion 10 includes: an inner member 16 (flow member), an outer member 17, and an elastic body 18 (expansion member). The inner member 16, the outer member 17, and the elastic body 18 are connected to the liquid source connector 11 at their proximal ends and to the nozzle connector 12 at their distal ends.

The inner member 16 and the outer member 17 are formed in a form in which mountain folds and valley folds are repeated in a cross section cut along a cross section in the longitudinal direction thereof, that is, are corrugated members (see fig. 2 (a)). The inner member 16 and the outer member 17 are extended in the longitudinal direction by reducing the height of the ridge folds and the valley folds in the water passing state (see fig. 2 (b)), and are contracted in the longitudinal direction by increasing the height of the ridge folds and the valley folds in the non-water passing state (see fig. 2 (a)). When the water passage state is changed to the non-water passage state, the inner member 16 and the outer member 17 contract to some extent, but the reduction in the length of the hose portion 10 in the longitudinal direction is small only by the force to contract. Therefore, the hose portion 10 is configured to include the elastic body 18, and the length in the longitudinal direction is shortened when the water passage state is changed to the non-water passage state by the force of the elastic body 18 to contract.

that is, the presence of the elastic body 18 allows the hose portion 10 to be contracted to a predetermined length (the non-water passage state initial length a) in the non-water passage state, and when the elastic body 18 is not provided with the contraction function, the hose portion 10 cannot be contracted to the non-water passage state initial length a. When the length of the hose portion 10 in the non-water-passing state in the case where the contracting function of the elastic body 18 is not provided is set to the non-water-passing state virtual length B, a/B is set to, for example, about 0.3 to 0.5. When the a/B ratio is smaller than this value, the load on the elastic body 18 in the stretched state becomes large, and the stretchability of the elastic body 18 is likely to be reduced. When the a/B ratio is larger than this value, the contraction function of the hose portion 10 is deteriorated, and the elasticity of the inner member 16 and the outer member 17 is increased, which causes problems such as the occurrence of cracks due to repeated use. From these, A/B may be set to, for example, about 0.4.

When the length of the hose portion 10 in a non-water-passing state (a state in which water inside flows out to the outside by an amount corresponding to contraction) is L1 and the length of the hose portion in a case where water is passed under a predetermined pressure (for example, 0.15Mpa to 0.4Mpa) is L2, L1/L2 is 0.3 to 0.7. When L1/L2 is smaller than this value, each member is easily deteriorated by repeated use. Therefore, L1/L2 may be 0.4 or more, and further 0.45 or more. When L1/L2 is larger than this value, the length becomes less (shrinkage becomes less). Therefore, L1/L2 may be 0.6 or less, and further 0.55 or less.

The inner member 16 is a water passage through which water flows. The inner member 16 may be formed of a material having elasticity itself or may be formed of a material having no elasticity. The inner member 16 is formed of a material such as polyvinyl chloride, silicon, elastomer, polyurethane, fluororesin, or the like. The length of the inner member 16 in the extending direction is, for example, in the range of 5m to 50m, and is, for example, 15 m. The inner diameter (inner diameter when water is passed) of the inner member 16 is set to, for exampleIs, for example, set to

The outer member 17 is a member that covers the inner member 16. The outer member 17 may be formed of a material having elasticity itself or may be formed of a material having no elasticityAnd (5) forming the material. The outer member 17 is formed of a material such as polyester, nylon, or the like. The length of the outer member 17 in the extending direction is, for example, in the range of 5m to 50m, and is, for example, 15 m. The inner diameter of the outer member 17 (inner diameter when water is passed) is larger than the inner diameter of the inner memberDegree of the disease.

The elastic body 18 is a string-like elastic member that extends along the inner member 16 and is configured to be able to expand and contract in the extending direction (longitudinal direction) of the inner member 16 in accordance with the liquid passage state of the inner member 16. The elastic body 18 is provided separately from 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 (radially therebetween). That is, the elastic body 18 is disposed outside the inner member 16 and inside the outer member 17. The elastic body 18 is disposed in a predetermined region in the circumferential direction of the inner member 16 in a state of being close to one side (see fig. 2 (a) and (b)).

The elastic body 18 is elongated in the extending direction of the inner member 16 by the water pressure in a state where water flows through the inner member 16 (water passing state) (see fig. 2 (b)). In a state where water does not flow through the inner member 16 (non-water-flowing state), the water pressure is released and the elastic body 18 returns to the original length (contraction) (see fig. 2 (a)). The "expansion" and "contraction" of the elastic body 18 mean that the elastic body actually expands and contracts in the extending direction and changes in length in the extending direction. Further, since the elastic body 18 expands and contracts in the extending direction, the apparent lengths of the inner member 16 and the outer member 17 change. That is, as shown in fig. 2 (b), in the water-passing state, the elastic body 18 is extended in the extending direction, and the inner member 16 and the outer member 17 are extended. On the other hand, as shown in fig. 2 (a) and 1, in the water non-passage state, the elastic body 18 contracts in the extending direction (returns to its original length), and the inner member 16 and the outer member 17 contract, for example, in a spiral shape, and are folded.

The elastic body 18 is formed of a material such as natural rubber, nitrile rubber, ethylene propylene rubber, silicone rubber, fluorine rubber, or the like. The length of the elastic body 18 in the extending direction is, for example, from 50% to 80% of the length of a state in which the elastic body is extended by, for example, water pressure in a normal state (a contracted state), and is, for example, from 7.5m to 12 m.

The elastic body 18 may be provided in a straight shape in the water non-passing state (however, may be bent by bending the hose portion 10 itself) or may be provided in a spiral shape in the water non-passing state in order to increase the extent to which the length of the hose portion 10 can be shortened. The elastic body 18 is a solid elastic member for satisfying both the increase in the contraction force and the reduction in the cross-sectional area. The elastic body 18 may be a hollow elastic member.

(Effect of embodiment 1)

As described above, the hose structure 1 of the present embodiment includes: an inner member 16 through which water flows; and an elastic body 18 which is provided separately from the inner member 16, extends along the inner member 16, and is configured to be capable of expanding and contracting in the extending direction of the inner member 16 in accordance with the liquid passage state of the inner member 16.

In the hose structure 1, the elastic body 18 separate from the inner member 16 can expand and contract in the extending direction of the inner member 16 according to the liquid passage state of the inner member 16. Such elastic bodies 18 extend along the inner member 16, and therefore, the inner member 16 deforms according to the expansion and contraction of the elastic bodies 18. Thus, in the hose structure 1, the liquid passing portion (inner member 16) and the stretchable portion (elastic body 18) are separated from each other, and the liquid passing portion can be deformed (for example, compactly collected) without stretching the liquid passing portion. This makes it possible to prevent damage to the liquid passage portion, which is a problem when the liquid passage portion is mainly expanded and contracted. As described above, according to the hose structure 1, the structure capable of suppressing the breakage of the liquid passage portion and deforming according to the liquid can be provided.

The hose structure 1 further includes an outer member 17 covering the inner member 16, and the elastic body 18 is provided separately from the inner member 16 and the outer member 17. Thus, the inner member 16, which is a part through which liquid flows, is covered with the outer member 17, so that the inner member 16 is more resistant to breakage, and the inner member 16 and the outer member 17 can be appropriately deformed by the elastic body 18 provided separately from 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. This can effectively give the influence of the expansion and contraction of the elastic body 18 to both the inner member 16 and the outer member 17, and can more appropriately deform the inner member 16 and the outer member 17. Further, the elastic body 18 can be configured not to contact water flowing through the inner member 16, and therefore, deterioration of the elastic body 18 due to contact with water can be suppressed.

The elastic body 18 is disposed close to a predetermined region in the circumferential direction of the inner member 16. When the elastic body is disposed in each region in the circumferential direction of the inner member, there may be problems that the elastic body and the inner member are easily entangled with each other when the elastic body expands and contracts, the inner member is hardly deformed, and the liquid permeability of the inner member is poor. In this regard, by disposing the elastic body 18 so as to be close to a predetermined region in the circumferential direction of the inner member 16, the inner member 16 can be configured to be easily deformed, and the liquid permeability of the inner member 16 can be ensured.

Further, since the inner member 16 and the like are folded by the elastic body 18 as a separate member, the elongation of the hose can be easily adjusted by adjusting the length of the elastic body 18.

[ 2 nd embodiment ]

Next, the hose structure 2 according to embodiment 2 will be described with reference to fig. 3. Note that in the description of the present embodiment, points different from those of embodiment 1 described above will be mainly described.

as shown in fig. 3 (a) and 3 (b), the hose portion 20 of the hose structure 2 according to embodiment 2 includes a water passage mechanism 21 that causes water to pass therethrough, and an expansion mechanism 22 that expands and contracts in the extending direction.

The water passage mechanism 21 includes an inner member 26 and an outer member 27. The inner member 26 has the same structure as the inner member 16 of embodiment 1, and the outer member 27 has the same structure as the outer member 17 of embodiment 1. That is, the inner member 26 is a water passage through which water flows, and the outer member 27 is a member covering the inner member 16.

The expansion mechanism 22 is provided along the extending direction of the water passage mechanism 21 (more specifically, the outer member 27). The telescopic mechanism 22 includes an elastic body 28 and a covering member 29. The elastic body 28 is formed of the same material as that of the elastic body 18 of embodiment 1, and is disposed outside the outer member 27. The elastic body 28 extends along 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 outside the outer member 27, and extends along the extending direction of the inner member 26 and the outer member 27. The cover member 29 is provided so as to be continuous with the outer member 27 at a predetermined region 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 polyester or nylon.

In this manner, the hose portion 20 of the hose structure 2 according to embodiment 2 has a two-chamber structure including a region (chamber) of the water passage mechanism 21 partitioned by the outer member 27 and a region (chamber) of the expansion mechanism 22 partitioned by the covering member 29. As shown in fig. 3 (b), in the water passage state, the elastic body 28 of the expansion and contraction mechanism 22 expands in the extending direction, and the covering member 29 of the expansion and contraction mechanism 22, and the inner member 26 and the outer member 27 of the water passage mechanism 21 are expanded. On the other hand, as shown in fig. 3 (a), in the non-water-passing state, the covering member 29, the inner member 26, and the outer member 27 are contracted, for example, in a spiral shape, and are folded, according to the contraction (return to the original length) of the elastic body 28 in the extending direction.

As described above, in the hose structure 2 according to embodiment 2, the elastic body 28 is disposed outside the outer member 27. For example, when the inner member is close to the elastic body, the inner member may be entangled with the elastic body that expands and contracts when water is supplied to the inner member. In this case, there is a possibility that the inner member is hardly deformed and the water permeability of the inner member is deteriorated. In this regard, by disposing the elastic body 28 at a position outside the outer member 27, entanglement of the inner member 26 and the elastic body 28 during water passage or the like can be effectively suppressed, the inner member 26 can be easily deformed, and water passage performance of the inner member 26 can be ensured.

The hose structure 2 further includes a covering member 29 that covers the elastic body 28 disposed outside the outer member 27. Thus, the region (chamber) of the water passage mechanism 21 involving water passage, which is formed by the inner member 26 and the outer member 27, and the region (chamber) of the expansion and contraction mechanism 22 involving expansion and contraction, which is formed by the elastic body 28 and the covering member 29, can be separated, and the influence of expansion and contraction of the elastic body 28 on the water passage inner member 26 and the outer member 27 can be effectively suppressed.

[ embodiment 3 ]

next, the hose structure 3 according to embodiment 3 will be described with reference to fig. 4. Note that in the description of the present embodiment, differences from the above-described embodiment 1 and embodiment 2 will be mainly described.

As shown in fig. 4 (a) to (c), the hose portion 30 of the hose structure 3 according to embodiment 3 includes: a main hose 31, a bellows hose 32, and an elastic body 33. The main hose 31, the extensible hose 32, and the elastic body 33 are connected to the liquid source connector 11 at their proximal ends and to the nozzle connector 12 at their distal ends.

The main hose 31 is a corrugated hose that is configured to be expandable and contractible along the direction in which water is transported. The main hose 31 is made of a material such as polyester, nylon, polyvinyl chloride, soft polypropylene, soft polyethylene, or polyethylene-vinyl acetate copolymer, or a structure in which a woven fabric of polyester or nylon is resin-coated. The main hose 31 has a cylindrical structure and is configured to repeat so-called mountain folds and valley folds. With such a configuration, the main hose 31 can be stretched in the extending direction and becomes a closed space whose volume is variable. The length of the main hose 31 in the extending direction is, for example, in the range of 5m to 50m, for example, 7.5m, in a normal state (in a contracted state). The length of the main hose 31 in the extending direction is, for example, 2 to 3 times as long as that in a contracted state, for example, 15m, in a state of being extended by the water pressure.

The extensible hose 32 is a corrugated hose that is configured to be inserted inside the main hose 31 and to be extensible and contractible in the direction in which water is transported. The flexible tube 32 is made of a material such as polyester, nylon, polyvinyl chloride, soft polypropylene, soft polyethylene, or polyethylene-vinyl acetate copolymer, or a structure in which a woven fabric of polyester or nylon is resin-coated. The bellows 32 has a cylindrical structure and is configured to repeat so-called mountain folds and valley folds. With such a configuration, the extensible hose 32 can be extended and contracted in the extending direction, and becomes a closed space whose volume is variable. The flexible hose 32 is sealed at a distal end portion connected to the nozzle connector 12. The length of the extensible hose 32 in the extending direction is, for example, in the range of 5m to 50m, for example, 7.5m, in a normal state (in a contracted state). The length of the main hose 31 in the extending direction is, for example, 2 to 3 times as long as that in a contracted state, for example, 15m, in a state of being extended by the water pressure.

The elastic body 33 is an elastic member passing through the inside of the bellows tube 32. The elastic body 33 is formed of, for example, the same material as the elastic body 18 of embodiment 1.

In the hose portion 30 of the hose structure 3 according to embodiment 3, in the non-water-passing state, as shown in fig. 4 (a), the elastic body 33 is in the non-extended state, and the main hose 31 and the extensible hose 32 are in the contracted state. When water is caused to flow from the liquid source connector 11 to the region inside the main tube 31 and outside the extensible tube 32 from this state to the water passage state as shown in fig. 4 (b), the elastic body 33 is extended in the extending direction by the water pressure as shown in fig. 4 (c), and accordingly, the main tube 31 and the extensible tube 32 are extended. When water is stopped and water is not supplied, the main tube 31 and the extensible tube 32 are contracted as shown in fig. 4 (a).

In such a hose part 30, since the elastic body 33 basically extends and contracts only in the longitudinal direction (extending and contracting direction), the frictional resistance between the elastic body 33 and the extensible hose 32 is small. This makes it possible to realize a highly durable structure that is less likely to be damaged even when the elastic body 33 is repeatedly expanded and contracted.

Further, since the elastic body 33 can be configured to pass through the inside of the extensible hose 32 and water can flow outside the extensible hose 32 (the elastic body 33 is not a water passage member), the hose portion 30 does not leak or break even if the elastic body 33 is worn.

Further, since the elastic body 33 is not a water passage member, the main expansion and contraction structure of the hose (the elastic body 33 in the hose portion 30) can be formed to be thin. This makes it easy to stretch the elastic body 33, and the water pressure for stretching and contracting the elastic body 33 can be set low. That is, the usable water pressure range can be expanded.

[ 4 th embodiment ]

Next, the hose structure 4 according to embodiment 4 will be described with reference to fig. 5. Note that in the description of the present embodiment, differences from the above-described embodiments 1 to 3 will be mainly described.

The basic configuration of the hose portion 40 of the hose structure 4 according to embodiment 4 shown in fig. 5 (a) to (c) is the same as the basic configuration of the hose portion 30 of the hose structure 3 according to embodiment 3 described above, and includes: a main hose 31, a bellows hose 32, and an elastic body 33. In addition to these configurations, the hose 40 is provided with a check valve 41 and a discharge valve 42 on the proximal end side (the liquid source connector 11 side) of the hose 40.

The check valve 41 is a valve that suppresses contraction of the extensible hose 32 even in a state where water passage is completed and the pressure in the flow path is reduced (see fig. 5 (c)). That is, the check valve 41 limits the pressure applied in the extension hose 32. By controlling the discharge valve 42, the extension hose 32 can be arbitrarily contracted and stored. Further, the discharge valve 42 may be provided on the nozzle connector 12 side. With such a configuration, the load of the pressure applied to the extensible hose 32 can be reduced, and the durability can be improved.

In addition, 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 described above. The hose portion 40X has the same basic structure as the above-described hose portion 40, 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 provided in the liquid source connector 11 on the primary side of the hose portion 40X. The pressure control valve 41X restricts (controls) the pressure applied to the bellows hose 32. This reduces the load of the pressure applied to the extensible hose 32, and improves the durability.

[ 5 th embodiment ]

Next, the hose structure 5 according to embodiment 5 will be described with reference to fig. 7. Note that in the description of the present embodiment, differences from the above-described embodiments 1 to 4 will be mainly described.

As shown in fig. 7 (a) and 7 (b), the hose portion 50 of the hose structure 5 according to embodiment 5 includes a main hose 51 and an elastic body 52. The main hose 51 and the elastic body 52 are connected to the liquid source connector 11 at their proximal ends and to the nozzle connector 12 at their distal ends.

The main hose 51 is a corrugated hose configured to be expandable and contractible in the direction of water conveyance. The main hose 51 is formed of the same material as the main hose 31 of embodiment 3, for example.

The elastic body 52 is an elastic member passing through the inside of the main hose 51. The elastic body 52 is formed of, for example, the same material as the elastic body 33 of embodiment 3.

In the hose portion 50 of the hose structure 5 according to embodiment 5, in the non-water-passing state, as shown in fig. 7 (a), the elastic body 52 is in an unstretched state, and the main hose 51 and the elastic body 52 are in a contracted state. When water is caused to flow from the liquid source connector 11 to the region inside the main hose 51 and outside the elastic body 52 from this state to be in a water-passing state, the elastic body 52 is stretched in the extending direction by the water pressure as shown in fig. 7 (b), and the main hose 51 is stretched accordingly. When water is stopped and water is not supplied, the main tube 51 is contracted as shown in fig. 7 (a).

In such a hose portion 50, when it is elongated in the extending direction in a water-passing state, the thickness of the elastic body 52 is reduced, and therefore, the water-passing region (the region inside the main hose 51 and outside the elastic body 52) is widened, and water can be efficiently sprinkled. Further, when the elastic body 52 contracts in the non-water-passing state, the thickness thereof becomes large, and therefore the water-passing region becomes narrow, and the retained water in the hose portion 50 can be efficiently discharged.

Further, for the same reason as that of the hose portion 30 of embodiment 3, a structure in which the elastic body 52 is less likely to be broken, a structure in which water is less likely to leak from the hose portion 50 even when the elastic body 52 is worn, and a structure in which a usable water pressure range can be expanded can be realized.

[ 6 th embodiment ]

next, the hose structure 6 according to embodiment 6 will be described with reference to fig. 8. Note that in the description of the present embodiment, differences from the above-described embodiments 1 to 5 will be mainly described.

The basic configuration of the hose portion 60 of the hose structure 6 according to embodiment 6 shown in fig. 8 (a) and (b) is the same as the basic configuration of the hose portion 50 of the hose structure 5 according to embodiment 5 described above. 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 formed of the same material as the elastic body 52 of embodiment 5, and is arranged differently from the elastic body 52. That is, the elastic body 62 is disposed in a predetermined region (lower portion in fig. 8) in the circumferential direction of the main hose 51 in a state of being close to one side.

In a structure in which a hose is stretched by water pressure, if friction between the hose and an elastic body such as a rubber tube is large, the hose is difficult to stretch and contract, and usable water pressure becomes high, which is a problem. In this regard, in the hose portion 60, since the elastic body 62 is disposed in a state of being close to one side in a predetermined region (a lower portion in fig. 8) in the circumferential direction of the main hose 51, a region where the main hose 51 and the elastic body 62 are in contact can be defined, and friction between the main hose 51 and the elastic body 62 can be reduced. This can expand the usable water pressure range.

Description of the reference numerals

1. 2, 3, 4X, 5, 6, a hose structure; 10. 20, 30, 40X, 50, 60, hose sections; 16. 26, an inner member; 17. 27, an outer member; 18. 28, an elastomer; 29. a covering member; 41X, pressure control valve (pressure reducing valve).

Claims

1. A hose structure in which a hose having a hose core and a hose core is wound around a winding core,

The hose structure is provided with:

A flow-through member in which a fluid flows; and

And an extensible member that is provided separately from the flow member and extends along the flow member, and that is extensible and contractible in an extending direction of the flow member in accordance with a flow state of the flow member.

2. The hose construction of claim 1 wherein,

The hose structure further comprises an outer member covering the inner member as the flow member,

the telescopic member is provided separately from the inner member and the outer member.

3. The hose construction of claim 2 wherein,

The telescoping member is disposed between the inner member and the outer member.

4. The hose construction of claim 3 wherein,

The telescopic member is disposed so as to be close to a predetermined region in the circumferential direction of the inner member.

5. the hose construction of claim 2 wherein,

The telescopic member is disposed outside the outer member.

6. The hose construction of claim 5 wherein,

The hose structure further includes a covering member that covers the extensible member disposed outside the outer member.

7. The hose structure according to any one of claims 1 to 6,

The hose structure further includes a pressure reducing valve for controlling a pressure applied to the flow member.