JP6062471B2 - connector - Google Patents

Description

  The present disclosure relates to a connector for connecting two water passage members.

  Patent document 1 is disclosing the coupling for connecting a hose, a watering nozzle, etc. FIG. The coupling includes a connection sleeve connected to the hose, and a spring member disposed in the connection sleeve. With the hose connected to the connecting sleeve, a part of the spring member is located in the hose. In this case, even if an external force such as bending or twisting is applied in the vicinity of the connection portion between the connection sleeve and the hose and the hose is deformed, the deformation of the hose is suppressed by the spring member present in the hose. Therefore, it becomes possible to protect the hose.

JP 2014-156906 A

  By the way, for example, if the hose and the watering nozzle are connected with the coupling and left outside in the winter night, the water staying in the coupling may freeze inside. In this case, when water becomes ice and the volume expands, a large stress acts on the coupling, and the coupling can be damaged.

  Thus, the present disclosure describes a connector capable of suppressing damage that may occur when water staying inside freezes.

  The connector which concerns on one viewpoint of this indication is a connector for connecting the 1st and 2nd water flow member, Comprising: The 1st cylinder to which the 1st water flow member is connected, The 2nd The 2nd cylinder to which a water flow member is connected, the 1st position near the 2nd water flow member, and the 2nd position near the 1st water flow member arranged on the outside of the 2nd cylinder A slide cylinder configured to be slidable with respect to the second cylinder, a retaining member configured to hold the second water passage member on the second cylinder, and a second An intermediate member that intermediates the cylindrical body, and the retaining member has a claw portion that extends to the inside of the second cylindrical body through a through-hole provided at the tip of the second cylindrical body, and is a slide cylinder When the body is in the first position, the movement of the claw portion outside the internal space of the second cylinder is restricted by the slide cylinder, and the slide cylinder is in the second position. When the claw portion can be moved out of the internal space of the second cylinder, the intermediate member communicates the first cylinder and the second cylinder in a liquid-tight manner, and the first and second cylinders A cylinder configured to be movable in the axial direction with respect to the two cylinders, and a transmission configured to extend between the cylinder and the slide cylinder and to transmit the movement of the cylinder to the slide cylinder. The outer surface area of the end surface on the second cylindrical body side of the cylindrical portion is larger than the outer surface area of the end surface on the first cylindrical body side of the cylindrical portion.

  In the connector according to one aspect of the present disclosure, the outer area (S1) of the end surface on the second cylinder side of the cylinder portion is larger than the outer area (S2) of the end surface on the first cylinder side of the cylinder portion. . When the water staying in the connector (the first cylinder, the second cylinder, and the intermediate member) begins to freeze, a mixture of water and ice is generated in the connector and the volume increases. Of the first cylindrical body and the force received from the mixture by the end surface on the second cylinder side of the part (F1 = internal pressure of the connector × S1) and the force of the end part of the cylindrical part on the first cylinder side from the mixture (F2 = internal pressure of the connector) The difference from ΔS2) (ΔF = F1−F2) increases. Therefore, the intermediate member moves to the first cylinder side. Since the intermediate member has a transmission portion configured to transmit the movement of the cylindrical portion to the slide cylindrical body, the slide cylindrical body is also connected to the second through the transmission portion as the intermediate member moves to the first cylindrical body side. Moved to the position. Therefore, since the movement of the claw portion to the outside of the internal space of the second cylinder is possible, the connection of the second water passage member to the second cylinder is released. As a result, even if the volume in the connector increases as the water in the connector freezes and changes to ice, the second water passage member is pushed out of the second cylinder, so that the pressure in the connector increases. Not likely to occur. From the above, it is possible to suppress damage that may occur when water staying inside freezes.

  The slide cylinder has an opening extending in the axial direction thereof, the transmission part is separate from the slide cylinder, and the tip of the transmission part may be disposed in the opening. In this case, the slide cylinder and the intermediate member move separately. Therefore, when the operator manually operates the slide cylinder and moves the slide cylinder between the first position and the second position, the intermediate member does not move. Accordingly, since the load of the intermediate member is not applied to the operator's hand, the slide cylinder can be operated more smoothly when the operator moves only the slide cylinder. On the other hand, when the water in the connector begins to freeze and the intermediate member moves, the tip of the transmission portion comes into contact with the opening, and the movement of the cylinder is transmitted to the slide cylinder through the transmission and the opening. Therefore, damage that may occur when water staying inside freezes can be suppressed.

  The connector according to one aspect of the present disclosure may further include a biasing member that biases the intermediate member toward the second cylindrical body. In this case, by setting the urging force by the urging member to a predetermined magnitude, the difference ΔF that occurs when the water in the connector does not begin to freeze becomes equal to or less than the urging force by the urging member, and the water in the connector The difference ΔF that occurs when the battery begins to freeze exceeds the urging force of the urging member. Therefore, the intermediate member can be prevented from moving when the water in the connector has not started to freeze, and the intermediate member can be moved toward the first cylindrical body when the water in the connector has started to freeze.

  The connector according to one aspect of the present disclosure further includes a stop valve disposed in the second cylinder, and the stop valve is when the second water passage member is not connected to the second cylinder. You may be comprised so that the flow of the liquid which goes to a 2nd cylinder from an intermediate member may be stopped. In this case, when the 2nd water flow member is not connected to the 2nd cylinder, it can control that the water in a connector splashes around around.

  According to the connector according to the present disclosure, it is possible to suppress damage that may occur when water staying inside freezes.

FIG. 1 is a cross-sectional view of the connector in a state where movement of the claw portion is regulated by a slide cylinder. FIG. 2 is an exploded perspective view of the upper portion of the connector. FIG. 3 is an exploded perspective view of the lower part of the connector. FIG. 4 is a cross-sectional view of the connector in a state where the movement of the claw portion is not restricted by the slide cylinder when the slide cylinder is pushed down. FIG. 5 is a cross-sectional view of the connector in a state where the movement of the claw portion is not regulated by the slide cylinder when the opening member pushes down the slide cylinder. FIG. 6 shows in cross section the connector with the stop valve activated.

  Since the embodiment according to the present disclosure described below is an example for explaining the present invention, the present invention should not be limited to the following contents. In the following description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted. In this specification, the term “upper” or “lower” corresponds to the upward or downward direction of the drawing.

[Connector structure]
As shown in FIGS. 1 to 3, the connector 1 connects, for example, a hose 101 (first water passage member) and a water spray nozzle joint 102 (second water passage member). The connector 1 includes a hose attachment member 10 (first cylinder), a lock nut 12, a retaining member 14, a joint attachment member 16 (second cylinder), a slide cylinder 18, and a retaining member. 20, an intermediate member 22, and a stop valve 24.

  The hose attachment member 10 has inner cylinder parts 10a and 10b, a flange part 10c, and outer cylinder parts 10d and 10e. The inner cylinder portions 10a and 10b are cylindrical and extend along a predetermined direction (vertical direction). The inner diameter of the inner cylinder portion 10a is smaller than the inner diameter of the inner cylinder portion 10b. The upper end of the inner cylinder part 10a is provided integrally with the lower end of the inner cylinder part 10b.

  The flange portion 10c is an annular plate. The inner edge of the flange portion 10c is integrally provided in the vicinity of the connection portion between the inner cylinder portions 10a and 10b. The flange portion 10c extends toward the radially outer side of the inner cylinder portions 10a and 10b.

  The outer cylinder portions 10d and 10e are cylindrical and extend along a predetermined direction (vertical direction). The outer cylinder part 10d is provided on the lower surface side of the flange part 10c so as to surround the inner cylinder part 10a. The inner peripheral surface of the outer cylindrical portion 10d is separated from the outer peripheral surface of the inner cylindrical portion 10a. A male screw portion 10f is provided on the outer peripheral surface of the outer cylinder portion 10d. The outer cylinder part 10e is provided on the upper surface side of the flange part 10c so as to surround the inner cylinder part 10b. The inner peripheral surface of the outer cylindrical portion 10e is separated from the outer peripheral surface of the inner cylindrical portion 10b. A female screw portion 10g is provided in a region on the distal end side of the inner peripheral surface of the outer cylinder portion 10e.

  The material of the hose attachment member 10 may be metal, resin, or the like, for example. From the viewpoint of low cost and high productivity, the hose attachment member 10 may be made of resin. From the viewpoint of easy molding, the hose attachment member 10 may be made of a thermoplastic resin. From the viewpoint of high moldability, the hose attachment member 10 may be made of polypropylene (PP), acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), or polyacetal (POM). The hose attachment member 10 may be made of ABS resin from the viewpoint that there are few appearance defects at the time of molding.

  The lock nut 12 is a member for fixing the hose 101 to the hose attachment member 10 in cooperation with the retaining member 14. The lock nut 12 is cylindrical and extends along a predetermined direction (vertical direction). A female screw portion 12 a is provided on the inner peripheral surface of the lock nut 12. The lock nut 12 is fastened to the outer cylinder portion 10d by the female screw portion 12a being screwed with the male screw portion 10f.

  The retaining member 14 is cylindrical and extends along a predetermined direction (vertical direction). The retaining member 14 is reduced in diameter toward the lower side. A plurality of protrusions 14 a projecting inward are provided at the lower end of the retaining member 14. The plurality of protrusions 14 a are arranged along the circumferential direction of the retaining member 14. Slits 14b are provided on both sides of each protrusion 14a. Therefore, it can be said that each protrusion 14a is disposed on a cantilever piece that can be elastically deformed in the radial direction of the retaining member 14.

  A hose 101 is disposed between the inner cylinder portion 10a and the retaining member 14. The inner cylinder part 10 a is inserted into the hose 101. Each cantilever piece of the retaining member 14 is deformed inward in the process in which the lock nut 12 is fastened to the outer cylinder portion 10d. As a result, the hose 101 is pressed against the inner cylinder portion 10a by each protrusion 14a.

  The joint mounting member 16 is cylindrical and extends along a predetermined direction (vertical direction). The joint attachment member 16 has cylinder parts 16a, 16b, and 16c. The lower end of the cylinder part 16a is provided integrally with the upper end of the cylinder part 16b. The inner diameter and the outer shape of the cylindrical portion 16a are smaller than the inner diameter and the outer shape of the cylindrical portion 16b, respectively. Therefore, an outer step 16d and an inner step 16e are provided in the vicinity of the connection portion between the cylinder portions 16a and 16b. The internal space of the cylindrical portion 16a can accommodate the nipple 102a of the water spray nozzle joint 102. The cylinder portion 16a is provided with at least one through hole 16f (in the present embodiment, for example, four through holes 16f). Each through-hole 16f is arrange | positioned at the substantially equal space | interval in the circumferential direction of the cylinder part 16a.

  A packing 26 and a holding member 28 are disposed in the cylindrical portion 16b. The packing 26 contacts the water nozzle joint 102 when the water nozzle joint 102 is inserted into the joint mounting member 16, and prevents water leakage from between the water nozzle joint 102 and the joint mounting member 16. The packing 26 is in contact with the inner step 16e. The packing 26 has a base portion 26a and a deformation portion 26b. Both the base part 26a and the deformation part 26b are cylindrical. The deformation part 26b is located inside the base part 26a. The deformation portion 26b is integrally provided at the tip of the base portion 26a. The deformable portion 26b extends downward from the tip of the base portion 26a. The deformation portion 26b is configured to be elastically deformable in the radial direction. The packing 26 may be formed of, for example, soft rubber. The holding member 28 is cylindrical. The holding member 28 sandwiches the packing 26 between the joint mounting member 16 and holds the packing 26 in the joint mounting member 16.

  The cylinder part 16c is cylindrical. The cylinder part 16c is a separate body from the cylinder parts 16a and 16b. The upper end portion of the cylindrical portion 16c is fitted with the lower end of the cylindrical portion 16b. In the state where the tube portion 16c is fitted to the tube portion 16b, the movement of the packing 26 and the holding member 28 in the vertical direction is restricted by the tube portion 16a and the tube portion 16c.

  The slide cylinder 18 is cylindrical. The slide cylinder 18 is disposed outside the joint mounting member 16. The slide cylinder 18 is configured to be slidable in the vertical direction with respect to the joint mounting member 16. Specifically, the slide cylinder 18 has a first position (see FIGS. 1 and 6) near the watering nozzle joint 102 and a second position (see FIGS. 4 and 5) near the hose 101. You can move between.

  On the inner wall surface of the slide cylinder 18, a protrusion 18 a that protrudes inward is provided. The protrusion 18a has an annular shape. The protrusion 18 a is located near the upper end of the slide cylinder 18. The inner diameter of the upper end 18b of the slide cylinder 18 closer to the upper end than the protrusion 18a is larger than the inner diameter of the protrusion 18a. Therefore, the internal space of the upper end 18b is larger than the internal space of the protrusion 18a. Near the lower end of the slide cylinder 18, at least one through hole 18 c (in the present embodiment, for example, two through holes 18 c) is provided. The through holes 18 c are arranged at substantially equal intervals in the circumferential direction of the slide cylinder 18. The through hole 18c extends along the vertical direction (the axial direction of the slide cylinder 18).

  The material of the slide cylinder 18 may be metal, resin, or the like, for example. From the viewpoint of low cost and high productivity, the slide cylinder 18 may be made of resin. From the viewpoint that molding is easy, the slide cylinder 18 may be made of a thermoplastic resin. From the viewpoint of high moldability, the slide cylinder 18 may be made of polypropylene (PP), acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), or polyacetal (POM). The slide cylinder 18 may be made of ABS resin from the viewpoint that there are few appearance defects at the time of molding.

  An elastic member 30 is disposed between the cylinder portion 16b and the slide cylinder 18. The elastic member 30 biases the slide cylinder 18 upward (upper end side of the joint mounting member 16). The elastic member 30 may be any member that can be elastically deformed. Examples of the elastic member 30 include a spring and rubber. In the present embodiment, a cylindrical coil spring is used as the elastic member 30. The material of the elastic member 30 may be a metal, a resin, or the like, for example. The elastic member 30 may be made of metal from the viewpoint that plastic deformation in the load direction (compression direction) is unlikely to occur during use of the connector 1. From the viewpoint of being hard to rust, the elastic member 30 may be made of stainless steel (SUS). The maximum repulsive force of the elastic member 30 may be about 3N to 35N. If it is 3N or more, the elastic member 30 exhibits a sufficient repulsive force, so that there is little risk of malfunction such as pushing down the slide cylinder 18 unintentionally by the user. If it is 35 N or less, even a weak user such as a woman or an elderly person can easily operate the slide cylinder 18. The lower limit of the maximum repulsive force of the elastic member 30 may be 8N or 12N. The upper limit of the maximum repulsive force of the elastic member 30 may be 20N.

  The retaining member 20 is disposed between the slide tubular body 18 and the tubular portion 16 a that is the tip end portion (upper end portion) of the joint mounting member 16. The retaining member 20 includes a base portion 20a, at least one connection portion 20b (four connection portions 20b in the present embodiment), and at least one claw portion 20c (four claw portions 20c in the present embodiment).

  The base portion 20a has an arc shape with a central angle of about 300 °, for example. The base 20a is sandwiched between the protrusion 18a and the outer step 16d when the slide cylinder 18 is in any position between the first position and the second position.

  The connection part 20b is flat form. The connecting portion 20b is provided integrally with the base portion 20a so as to extend upward from the base portion 20a. The connecting portions 20b are arranged at substantially equal intervals in the circumferential direction of the base portion 20a.

  The claw portion 20c has a flat plate shape. The claw portion 20c is integrally provided at the tip of the connection portion 20b. The nail | claw part 20c is located inside the base 20a. Each nail | claw part 20c is located in the corresponding through-hole 16f, and is extended toward the inner side of the cylinder part 16a through the corresponding through-hole 16f. In other words, the retaining member 20 is attached to the outside of the cylindrical portion 16a so that each claw portion 20c is positioned in the corresponding through hole 16f.

  The connecting portion 20b and the claw portion 20c are configured to be elastically deformable in the radial direction of the base portion 20a. The connecting portion 20b and the claw portion 20c oppose the protruding portion 18a when the slide cylinder 18 is in the first position. Therefore, when the slide cylinder 18 is in the first position, the outward deformation (movement) of the connecting portion 20b and the claw portion 20c is restricted by the protruding portion 18a. When the slide cylinder 18 is in the first position, the tip of the claw 20c is located in the internal space of the cylinder 16a (see FIGS. 1 and 6). At this time, the tip of the claw portion 20c comes into contact with the outer peripheral surface of the nipple 102a of the water spray nozzle joint 102, and holds the nipple 102a in the joint mounting member 16 so that the water nozzle joint 102 does not come out. The upper end portion of the connecting portion 20b and the claw portion 20c are opposed to the upper end portion 18b when the slide cylinder 18 is in the second position. Therefore, when the slide cylinder 18 is in the second position, the upper end portion of the connection portion 20b and the claw portion 20c can be deformed (moved) outward so as to approach the upper end portion 18b. In other words, when the slide cylinder 18 is in the second position, the tip of the claw 20c can be moved out of the internal space of the cylinder 16a (see FIGS. 4 and 5). It should be noted that when the slide cylinder 18 is in the second position, it is sufficient that at least the tip of the claw portion 20c can move out of the internal space of the cylinder portion 16a, and the connecting portion 20b is deformed (moved outward). ) It may not be possible.

  The intermediate member 22 is disposed between the hose attachment member 10 and the joint attachment member 16. The intermediate member 22 has a cylinder part 22a and a transmission part 22b. The cylindrical portion 22a has a cylindrical shape. The lower end portion of the cylindrical portion 22a is inserted into the inner cylindrical portion 10b, and is movable in the vertical direction (the axial direction of the inner cylindrical portion 10b) within the inner cylindrical portion 10b. An O-ring OR1 is disposed between the lower end portion of the cylindrical portion 22a and the inner cylindrical portion 10b, and the space between the two is kept liquid-tight. The upper end portion of the cylindrical portion 22a is inserted into the cylindrical portion 16c and is movable in the vertical direction (the axial direction of the cylindrical portion 16c) in the cylindrical portion 16c. An O-ring OR2 is disposed between the upper end portion of the cylindrical portion 22a and the inner cylindrical portion 10b, and the space between the two is kept liquid-tight. Therefore, the intermediate member 22 communicates the hose attachment member 10 and the joint attachment member 16 in a fluid-tight manner. Therefore, when the nipple 102a of the water spray nozzle joint 102 is attached to the cylinder portion 16a (joint attachment member 16), the liquid (water) is contained in the inner cylinder portion 10a, the inner cylinder portion 10b, the cylinder portion 22a, and the cylinder. It flows in the part 16c and the cylindrical part 16b.

  The outer area S1 of the end surface on the joint attachment member 16 side (upper end side) of the cylindrical portion 22a is larger than the outer area S2 of the end surface on the hose attachment member 10 side (lower end portion side) of the cylindrical portion 22a. Therefore, the joint mounting member 16 side (upper end side) of the cylindrical portion 22a receives a force F1 (F1 = internal pressure of the connector 1 × outer area S1) having a magnitude obtained by multiplying the inner pressure of the connector 1 by the outer area S1. The end surface of the tube portion 22a on the hose attachment member 10 side (lower end portion side) receives a force F2 (F2 = internal pressure of the connector 1 × external area S2) having a magnitude obtained by multiplying the internal pressure of the connector 1 by the external area S2. Therefore, due to the size relationship between the external areas S1 and S2, the intermediate member 22 has a force represented by the difference ΔF between the forces F1 and F2 (ΔF = F1−F2 = internal pressure of the connector 1 × (S1−S2)). Is given downward. Since the internal pressure of the connector 1 increases greatly when the water in the connector 1 begins to freeze, ΔF changes greatly before and after the water in the connector 1 starts to freeze. That is, if ΔF before the water in the connector 1 starts freezing is ΔFwater, and ΔF after the water in the connector 1 starts freezing is ΔFice, it can be expressed as ΔFice >> ΔFwater. From this, when the force that upwardly biases the intermediate member 22 by the elastic member 32 or the like, which will be described later, is Fup, the difference ΔS (ΔS = ΔS) between the outer areas S1 and S2 so as to satisfy the relationship ΔFwater <Fup <ΔFice You may set the urging | biasing force by S1-S2) or the elastic member 32 grade | etc.,. The outer area S2 may be about 0.9 times the outer area S1, for example. In this case, when the water in the connector 1 has not started to freeze, the intermediate member 22 can be prevented from moving, and when the water in the connector 1 has started to freeze, the intermediate member 22 can be connected to the hose attachment member 10 side ( It becomes possible to move to the lower side. In the present specification, the “outside area” refers to an area surrounded by the outer peripheral edge of each end face of the cylindrical portion 22a. Therefore, both the hole part of the cylinder part 22a and the hole of the cylinder are included in the outer area.

  The transmission part 22b extends between the cylinder part 22a and the slide cylinder 18. The transmission portion 22b has a flange portion 22c and at least one arm portion 22d (a pair of arm portions 22d in the present embodiment). The flange portion 22c has an annular shape. The inner peripheral edge of the flange portion 22c is integrally provided at an intermediate portion in the vertical direction on the outer peripheral surface of the cylindrical portion 22a. The flange portion 22c extends toward the radially outer side of the cylindrical portion 22a. The pair of arm portions 22d are disposed at substantially equal intervals in the circumferential direction of the flange portion 22c, and face each other with respect to the axis of the cylindrical portion 22a. The arm portion 22d is an L-shaped flat plate. The lower end (base end) of the arm portion 22d is provided integrally with the outer edge of the flange portion 22c. The upper end portion (tip portion) of the arm portion 22d is bent so as to extend outward. The lower part of the cylinder part 16c is located between the arm part 22d and the upper part of the cylinder part 22a. The tip of each arm portion 22d is located in the corresponding through hole 18c. When the slide cylinder 18 is in the first position, the tip of each arm portion 22d is located on the lower end side of the corresponding through hole 18c.

  The material of the intermediate member 22 may be, for example, metal, resin, rubber, or the like. From the viewpoint of relatively high strength, the intermediate member 22 may be made of resin or metal. From the viewpoint of low cost and high productivity, the intermediate member 22 may be made of resin. From the viewpoint of easy molding, the intermediate member 22 may be made of a thermoplastic resin. From the viewpoint of high moldability, the intermediate member 22 may be made of polypropylene (PP), acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), or polyacetal (POM). The intermediate member 22 may be made of polypropylene from the viewpoint of low cost and sufficient and sufficient strength.

  An elastic member 32 (urging member) is disposed between the lower end of the cylindrical portion 22a and between the inner cylindrical portion 10b and the outer cylindrical portion 10e. The elastic member 32 urges the intermediate member 22 upward (to the joint mounting member 16 side). The elastic member 32 may be any member that can be elastically deformed. Examples of the elastic member 32 include a spring and rubber. In the present embodiment, a cylindrical coil spring is used as the elastic member 32. The material of the elastic member 30 may be a metal, a resin, or the like, for example. The elastic member 32 may be made of metal from the viewpoint that plastic deformation in the load direction (compression direction) hardly occurs in the process of using the connector 1. From the viewpoint of being hard to rust, the elastic member 32 may be made of stainless steel (SUS). The initial repulsive force of the elastic member 32 may be 12 N (when the water pressure is 0.5 MPa) to 47 N (when the water pressure is 2.0 MPa). When the pressure is 12 N (when the water pressure is 0.5 MPa) or more, the intermediate member 22 is unlikely to move to the first position at the water pressure during normal watering. If the pressure is 47N (when the water pressure is 2.0 MPa) or less, the intermediate member 22 can operate before the connector 1 is damaged. The lower limit of the initial repulsive force of the elastic member 32 may be 18N (when the water pressure is 0.75 MPa). The upper limit of the initial repulsive force of the elastic member 32 may be 35 N (when the water pressure is 1.5 MPa).

  The stop valve 24 is disposed in the joint mounting member 16 so as to be positioned between the water spray nozzle joint 102 and the intermediate member 22. The stop valve 24 is movable in the vertical direction (the axial direction of the joint mounting member 16) in the joint mounting member 16. The stop valve 24 has a main body portion 24a and a flange portion 24b. The main body 24a is a rod-shaped body having a cross-shaped cross section. The main body 24a extends along the vertical direction (the axial direction of the joint mounting member 16). The flange portion 24b is annular. The inner peripheral edge of the flange portion 24b is provided integrally with an intermediate portion in the vertical direction on the outer peripheral surface of the main body portion 24a. An O-ring OR3 is attached to the outer peripheral surface of the flange portion 24b.

[Connector operation]
Next, the operation of the connector 1 will be described.

(1) Movement of slide cylinder When an operator holds the slide cylinder 18 by hand and pushes down only the slide cylinder 18 with a force of a magnitude that resists the urging force of the elastic member 30, it is shown in FIG. As shown, the slide cylinder 18 moves from the first position to the second position. Thereby, the front-end | tip of the nail | claw part 20c can move out of the internal space of the cylinder part 16a. In this case, when the nipple 102a of the water spray nozzle joint 102 is inserted into the cylindrical portion 16a or pulled out from the cylindrical portion 16a, the tip of the claw portion 20c does not hinder the passage of the nipple 102a. Therefore, the water spray nozzle joint 102 can be attached to and detached from the joint attachment member 16.

  The slide cylinder 18 and the intermediate member 22 (transmission portion 22b) are separate bodies, and the distal ends of the respective arm portions 22d are located in the corresponding through holes 18c, so that the slide cylinder 18 is in the first position. When moving from the first position to the second position, the movement of the slide cylinder 18 is not transmitted to the arm portion 22d, and the intermediate member 22 does not move. Therefore, since the load of the intermediate member 22 is not applied to the operator's hand, the slide cylinder 18 can be operated more smoothly when the operator moves only the slide cylinder 18. When the slide cylinder 18 is in the second position, the tip of each arm portion 22d is located on the upper end side of the corresponding through hole 18c.

(2) Movement of slide cylinder and intermediate member When water staying in the connector 1 starts freezing, the water in the connector 1 gradually becomes ice and the volume expands, so the internal pressure of the connector 1 increases. To do. Therefore, ΔF becomes extremely large, and the intermediate member 22 moves toward the hose attachment member 10 side (lower side) as shown in FIG. At this time, since the tips of the respective arm portions 22d come into contact with the lower ends of the corresponding through holes 18c, the downward movement of the intermediate member 22 is transmitted to the slide cylinder 18, and the slide cylinder 18 also moves downward. . Thereby, the front-end | tip of the nail | claw part 20c can move out of the internal space of the cylinder part 16a. Also in this case, the nipple 102a of the sprinkling nozzle joint 102 can freely enter and leave the cylinder portion 16a, as in the case where the operator pushes down only the slide cylinder 18 downward by hand. Therefore, even if water becomes ice and the volume increases, the nipple 102a is pushed out from the tube portion 16a by the ice according to the increase, so that the pressure in the connector 1 is hardly increased. As a result, it is possible to suppress damage that may occur to the connector 1 when water staying inside freezes.

(3) Movement of stop valve When water is supplied into the connector 1 from the hose 101 side in a state where the water spray nozzle joint 102 is removed from the joint mounting member 16, the water is supplied as shown in FIG. The stop valve 24 is pushed out to the distal end side of the joint mounting member 16 by the pressure of the water. At this time, the O-ring OR3 of the flange portion 24b contacts the holding member 28. As a result, the flow of water from the intermediate member 22 toward the joint mounting member 16 (the flow of water downstream from the holding member 28) is stopped by the stop valve 24 (O-ring OR3). Therefore, when the supply of water from the hose 101 side into the connector 1 continues, even if the water spray nozzle joint 102 is detached from the joint mounting member 16, water is unexpectedly scattered from the connector 1 to the surroundings. Can be prevented from getting wet.

[Other Embodiments]
As mentioned above, although embodiment concerning this indication was described in detail, you may add various deformation | transformation to said embodiment within the range of the summary of this invention. For example, in the above-described embodiment, the slide cylinder 18 is provided with the through hole 18c, but instead of this, an opening that does not penetrate may be provided in the slide cylinder 18. In this case, the opening extends in the vertical direction (the axial direction of the slide cylinder 18), similarly to the through hole 18c. The tip of the arm 22d is located in the opening.

  In the above embodiment, the slide cylinder 18 and the transmission portion 22b are separate bodies, but they may be configured integrally.

  In the above embodiment, the transmission portion 22b has a pair of arm portions 22d. However, the transmission portion 22b only needs to have at least one arm portion 22d. In particular, when the transmission portion 22b has one arm portion 22d, or when it has a pair of arm portions 22d opposed to each other with respect to the axis of the cylindrical portion 22a as in the above-described embodiment, the mold is filled with resin. When molding the member 22, the arm portion 22d can be easily taken out from the mold.

  In the said embodiment, although the connector 1 connected the hose 101 and the joint 102 for watering nozzles, not only these two water flow members but the connector 1 can connect various water flow members.

  DESCRIPTION OF SYMBOLS 1 ... Connector, 10 ... Hose attachment member (1st cylinder), 16 ... Joint attachment member (2nd cylinder), 18 ... Slide cylinder, 18c ... Through-hole, 20 ... Stopping member, 20c ... Nail | claw , 22 ... intermediate member, 22 a ... cylindrical part, 22 b ... transmission part, 24 ... stop valve, 32 ... elastic member (biasing member), 101 ... hose (first water passage member), 102 ... joint for watering nozzle (Second water passage member), S1, S2...

Claims (4)

A connector for connecting the first and second water flow members,
A first cylinder to which the first water flow member is connected;
A second cylinder to which the second water passage member is connected;
The second cylinder is disposed outside the second cylinder, and between the first position near the second water passage member and the second position near the first water passage member. A slide cylinder configured to be slidable with respect to,
A retaining member configured to hold the second water passage member in the second cylinder;
An intermediate member disposed between the first cylinder and the second cylinder;
The retaining member has a claw portion that extends to the inside of the second cylinder through a through-hole provided at a tip of the second cylinder,
When the slide cylinder is in the first position, movement of the claw portion outside the internal space of the second cylinder is regulated by the slide cylinder,
When the slide cylinder is in the second position, the claw portion can be moved out of the internal space of the second cylinder,
The intermediate member is
A cylinder portion configured to fluidly communicate the first cylinder and the second cylinder, and to be movable in the axial direction with respect to the first and second cylinders;
A transmission portion configured to extend between the cylindrical portion and the slide cylindrical body and to transmit the movement of the cylindrical portion to the slide cylindrical body;
The external area of the end surface on the second cylinder side of the cylindrical portion is larger than the external area of the end surface on the first cylinder side of the cylindrical portion. The slide cylinder has an opening extending in the axial direction thereof,
The transmission section is separate from the slide cylinder,
The connector according to claim 1, wherein a distal end portion of the transmission portion is disposed in the opening.   The connector according to claim 1, further comprising a biasing member that biases the intermediate member toward the second cylindrical body. A stop valve disposed in the second cylinder;
The stop valve is configured to stop the flow of liquid from the intermediate member toward the second cylinder when the second water passage member is not connected to the second cylinder. The connector according to any one of claims 1 to 3.

Images