JP6110550B1 - Hose fittings - Google Patents

Abstract

To provide a hose connector excellent in convenience. A hose connector 100 includes an upper member 200 and a lower member 300 that can be detachably connected to each other. The upper member 200 includes an abutting portion 210 that can abut on the faucet discharge pipe f3 from above and an upper engaging portion 220. The lower member 300 includes a discharge pipe insertion portion 302 having a packing 312, a lower engagement portion 304 that can be engaged with the upper engagement portion 220, and a hose connection portion 306. Due to the connection state in which the upper engagement portion 220 and the lower engagement portion 304 are engaged with each other, the bent discharge pipe f3 can be sandwiched. The connection state is formed by pressing one of the upper member 200 and the lower member 300 against the other. [Selection] Figure 3

Description

  The present invention relates to a hose connector for connecting a hose to a faucet.

  A hose connector that can connect a hose to a faucet is known. Japanese Patent Application Laid-Open No. 56-105191 discloses a hose joint having a fixing screw. The hose joint is fixed to the faucet by tightening a plurality of screws arranged in a circumferential direction. It takes time to tighten the screws. Furthermore, it takes a lot of time and effort to evenly tighten the screws.

  On the other hand, a hose connection part that does not require tightening of a plurality of screws as described above has been proposed. Japanese translation of PCT publication No. 2007-528458 discloses a fastener having a screw part formed at a lower part thereof, a connecting tool fitted inside the fixture, and a fastening part having a screw part fastened to the screw part of the fixed part. And a tap connection coupling.

JP-A-56-105191 Special table 2007-528458 gazette

  This inventor earnestly examined about the hose connector excellent in convenience. As a result, the present inventors have come up with a hose connector that is easy to attach and has other conveniences.

  An object of the present invention is to provide a hose connector excellent in convenience.

  A preferred hose connector has an upper member and a lower member that can be removably connected to each other. The upper member has a contact portion that can contact the discharge pipe of the faucet from above and an upper engagement portion. The lower member includes a discharge pipe insertion portion having packing, a lower engagement portion that can be engaged with the upper engagement portion, and a hose connection portion. Due to the connection state in which the upper engagement portion and the lower engagement portion are engaged with each other, the bent and extended discharge pipe can be sandwiched. The connection state is formed by pressing one of the upper member and the lower member against the other.

  Preferably, the upper engaging portion has a missing portion in which a part in the circumferential direction is missing.

  Preferably, the missing portion is provided at two locations in the circumferential direction, so that the upper engagement portion is divided into a first engagement portion and a second engagement portion. Preferably, the upper member includes a connecting portion that connects the first engaging portion and the second engaging portion. Preferably, the connection part has the contact part.

  Preferably, the packing has a cylindrical portion that can be in close contact with the outer surface of the discharge pipe. Preferably, a space is provided outside the cylindrical portion.

  Preferably, the upper member can be attached to the discharge pipe from above.

  Another preferred hose connector has an upper member and a lower member that can be removably connected to each other. The upper member has a contact portion that can contact the discharge pipe of the faucet from above and an upper engagement portion. The lower member includes a discharge pipe insertion portion having packing, a lower engagement portion that can be engaged with the upper engagement portion, and a hose connection portion. Due to the connection state in which the upper engagement portion and the lower engagement portion are engaged with each other, the bent and extended discharge pipe can be sandwiched. In the connected state, the upper member does not apply a compressive force to the packing.

  Preferably, the lower engagement portion is constituted by a ring engagement body that is an end-like annular member. Preferably, the ring engagement body has an engagement protrusion. Preferably, the upper member has a concave portion as the upper engaging portion and a contact surface. Preferably, the lower member has a through hole. Preferably, when the ring engagement body is in a normal mounting state, the engagement protrusion portion passes through the through hole and protrudes into the lower member. Preferably, the abutment surface abuts on the engagement protrusion protruding inside the lower member by pressing one of the upper member and the lower member against the other, and the ring The engaging body is configured to be expanded and deformed. Preferably, the engagement protrusion enters the recess due to a diameter-reducing deformation of the ring engagement body after the expansion deformation.

  A hose connector excellent in convenience can be obtained.

FIG. 1 is a perspective view showing a state in which the hose connector according to the first embodiment is attached to a faucet. FIG. 2 is a cross-sectional view of FIG. FIG. 3 is an exploded perspective view of FIG. FIG. 4 is a perspective view in which FIG. 3 is further disassembled. Fig.5 (a) is a perspective view of the upper member which concerns on 1st Embodiment, FIG.5 (b) and FIG.5 (c) are perspective views of this upper member seen from another angle, respectively. . 6A is a plan view of the upper member according to the first embodiment, FIG. 6B is a front view of the upper member, and FIG. 6C is a bottom view of the upper member. . 7A is a side view of the upper member according to the first embodiment, and FIG. 7B is a cross-sectional view taken along the line AA in FIG. 6B, and FIG. These are the rear views of this upper member. FIG. 8 is a perspective view showing a state in which the hose connector according to the second embodiment is attached to the faucet. FIG. 9 is a cross-sectional view of FIG. FIG. 10 is an exploded perspective view of FIG. FIG. 11 is a perspective view in which FIG. 10 is further disassembled. FIG. 12A is a perspective view of the upper member according to the second embodiment, and FIGS. 12B and 12C are perspective views of the upper member viewed from different angles, respectively. . FIG. 13A is a plan view of the upper member according to the second embodiment, FIG. 13B is a front view of the upper member, and FIG. 13C is a bottom view of the upper member. . FIG. 14A is a side view of the upper member according to the second embodiment, and FIG. 14B is a cross-sectional view taken along line AA in FIG. 13B, and FIG. Is a rear view of the upper member FIG. 15 is a perspective view showing a state in which the hose connector according to the third embodiment is attached to the faucet. 16 is a cross-sectional view of FIG. FIG. 17 is a perspective view showing a state in which the hose connector according to the fourth embodiment is attached to the faucet. 18 is a cross-sectional view of FIG. FIG. 19 is an exploded perspective view of the hose connector of FIG. FIG. 20 is a perspective view in which FIG. 19 is further disassembled. FIG. 21A is a perspective view of the upper member according to the fourth embodiment, and FIG. 21B and FIG. 21C are perspective views of the upper member viewed from different angles, respectively. . 22A is a front view of the upper member according to the fourth embodiment, and FIG. 22B is a cross-sectional view taken along the line AA in FIG. 22A, and FIG. ) Is a rear view of the upper member. FIG. 23A is a perspective view of the ring engagement body, FIG. 23B is a perspective view of the ring engagement body viewed from another viewpoint, and FIG. 23C is a plan view of the ring engagement body. FIG. 23 (d) is a bottom view of the ring engaging body. FIGS. 24A and 24B are cross-sectional views for explaining the connection between the upper member and the lower member in the fourth embodiment.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  In the present application, words such as “upper”, “upper side”, “lower”, and “lower side” are used based on the posture of a typical faucet. Further, words such as “right”, “right side”, “left”, and “left side” are used based on the viewpoint of the user in this typical situation. If the faucet posture is atypical, these words are interpreted along that posture.

  FIG. 1 is a perspective view showing a state in which the hose connector 100 according to the first embodiment is attached to the faucet f1. FIG. 2 is a cross-sectional view of FIG. FIG. 3 is an exploded perspective view of FIG. FIG. 4 is an exploded perspective view in which the lower member of FIG. 3 is further disassembled.

  The hose connector 100 includes an upper member 200 and a lower member 300. The upper member 200 and the lower member 300 are detachably connected to each other. In the state where the upper member 200 is inserted inside the lower member 300, both are connected.

  The faucet f1 has a faucet body f2, a discharge pipe f3, and an operation part f4. Further, a valve (not shown) is incorporated in the faucet f1. By operating (rotating) the operation unit f4, it is possible to switch the discharged water and adjust the discharged water amount.

  In the present embodiment, the faucet f1 has a discharge pipe f3 fixed to the faucet body f2. In those skilled in the art, the faucet f1 is referred to as a horizontal faucet. In this faucet f1, the boundary between the faucet body f2 and the discharge pipe f3 is unknown. For convenience, the portion downstream of the valve can be regarded as the discharge pipe f3.

  The upper member 200 is a member formed integrally as a whole. The upper member 200 has a shape in which a part of the dome-shaped structure in the circumferential direction is missing as a whole. Details of the upper member 200 will be described later.

  As shown in FIG. 3, the lower member 300 includes a discharge pipe insertion portion 302, a lower engagement portion 304, and a hose connection portion 306. The discharge pipe insertion portion 302 has a cylindrical inner surface. The lower end portion of the discharge pipe f3 is inserted into the discharge pipe insertion portion 302. A hose (connector attached to the end of the hose) is connected to the hose connection portion 306.

  As shown in FIG. 4, the discharge pipe insertion portion 302 includes a slide ring 308, a main body portion 310, and a packing 312. The main body 310 has openings 314 at a plurality of locations (three locations) in the circumferential direction.

  The lower engagement portion 304 has an engagement elastic body 316. The engagement elastic body 316 is provided at a plurality of locations (three locations) in the circumferential direction. The engagement elastic body 316 includes a base portion 317 and an engagement claw 318 extending obliquely downward from the upper end of the base portion 317. An engagement elastic body 316 is disposed in each of the openings 314. In the natural state where the pressure is not pressed, the engaging claw 318 protrudes radially inward from the opening 314.

  The packing 312 has a flange part 320 and a cylindrical part 322. The flange part 320 extends radially outward from the upper end of the cylindrical part 322. The inner diameter of the cylindrical portion 322 is set to be smaller than the outer diameter of the discharge pipe f3 at the portion inserted into the cylindrical portion 322.

  As shown in FIG. 4, the hose connection portion 306 is constituted by a nipple member 330. The nipple member 330 has a hose connection portion 306 and a screw portion 332. The screw portion 332 is a male screw. On the other hand, as shown in FIG. 2, the main body portion 310 has a screw portion 340. The screw portion 340 is a female screw. The screw portion 332 and the screw portion 340 are screwed together.

  The packing 312 is fixed using the screw connection between the screw portion 332 and the screw portion 340. Specifically, the flange portion 320 of the packing 312 is sandwiched between the inner extending portion 342 of the main body portion 310 and the upper end surface 344 of the nipple member 330. As the screwing amount of the screw coupling is increased, the inner extending portion 342 and the upper end surface 344 are closer to each other, and the flange portion 320 is strongly sandwiched. With this configuration, the packing 312 is easily and securely fixed.

  As shown in FIG. 3, the discharge pipe insertion portion 302 of the lower member 300 has a missing portion 350 that is partially missing in the circumferential direction. The missing portion 350 is constituted by a missing portion 352 of the slide ring 308 and a missing portion 354 of the main body portion 310 (see FIG. 4).

  FIG. 5A is a perspective view of the upper member 200 viewed from the upper right side. FIG. 5B is a perspective view of the upper member 200 as viewed obliquely from the lower right. FIG. 5C is a perspective view of the upper member 200 as viewed obliquely from the lower left. FIG. 6A is a plan view of the upper member 200. FIG. 6B is a front view of the upper member 200. FIG. 6C is a bottom view of the upper member 200. FIG. 7A is a right side view of the upper member 200. FIG. 7B is a cross-sectional view taken along the line AA in FIG. FIG. 7C is a rear view of the upper member 200.

  The upper member 200 has a side wall portion 202 and an upper wall portion 204. The upper member 200 is opened downward. The side wall 202 has a substantially cylindrical shape, but a part in the circumferential direction is missing. That is, the side wall portion 202 has a missing portion 206.

  The upper member 200 has a contact portion 210 that can contact the discharge pipe f3 from above (see FIG. 2). In the upper wall portion 204 of the upper member 200, a portion located above the missing portion 206 is a contact portion 210.

  The upper member 200 has an upper engagement portion 220. The upper engaging portion 220 is provided on the side wall portion 202. The upper engaging part 220 is a dent. More specifically, the upper engaging portion 220 is a groove provided along the circumferential direction. However, the upper engagement portion 220 (groove) is interrupted in the region where the missing portion 206 exists. The upper engaging portion 220 can engage with the engaging claw 318 of the engaging elastic body 316.

[Connection state and mounting state]
In the present application, the state in which the upper member 200 and the lower member 300 are engaged with each other is also referred to as a connected state. As shown in FIG. 2, the exhaust pipe f <b> 3 extending in a bent manner is sandwiched by this connected state. By this sandwiching, the hose connector 100 is fixed to the discharge pipe f3. As long as the connection state is maintained, the hose connector 100 does not come out of the discharge pipe f3. In the present application, “pinch the discharge pipe f3” means that the discharge pipe f3 is held in a state where it does not come off.

  The connection state is formed by pressing one of the upper member 200 and the lower member 300 against the other. The upper member 200 may be pressed against the lower member 300, or the lower member 300 may be pressed against the upper member 200. Note that the term “press” refers to a force for deforming a member such as an engagement elastic body 316 described later (a member that is temporarily deformed until the engagement is completed). It is. The engagement for forming the connection state is a concavo-convex engagement that appears when the positional relationship between the upper member 200 and the lower member 300 becomes a predetermined positional relationship. One of the upper member 200 and the lower member 300 has a convex portion that retreats due to elastic deformation due to compression, and the other is engaged with the protruding convex portion while allowing the convex portion to protrude in the predetermined positional relationship. What is necessary is just to have the recessed part to match. The connection state is formed by one touch. Hereinafter, this engagement is also referred to as one-touch connection. Formation of a connection state is very easy.

  The engagement between the upper member 200 and the lower member 300 is an engagement by elastic deformation. In the present embodiment, the engagement elastic body 316 of the lower member 300 is elastically deformed. The portion that is elastically deformed may be at least a part of the lower member 300 or may be at least a part of the upper member 200. One-touch connection is achieved by engagement by elastic deformation.

As a method for attaching the hose connector 100, the following procedure A and procedure B are possible. By the procedure A and the procedure B, the attachment state is completed simultaneously with the completion of the connection state.
(Procedure A) The upper member 200 is put on the discharge pipe f3 from above, and the lower member 300 is pressed against the upper member 200 from below while the discharge pipe f3 is inserted into the discharge pipe insertion portion 302.
(Procedure B) The lower member 300 is attached to the discharge pipe f3 from below, and then the upper member 200 is pressed against the lower member 300 from above.

  In any procedure, the connection state is completed when the upper engagement portion 220 (dent) is engaged with the lower engagement portion 304 (engagement elastic body 316). In the process in which one of the upper member 200 and the lower member 300 is pressed against the other, the lower end portion of the upper member 200 presses the engagement claw 318. Since the engaging claw 318 extends obliquely downward, the engaging claw 318 is easily pressed by the upper member 200 moving from top to bottom and retracts outward in the radial direction. When the upper engagement portion 220 (dent) of the upper member 200 reaches the position of the engagement claw 318, the engagement claw 318 is released from pressing and protrudes inside the upper engagement portion 220 (dent). As a result, the engaging claw 318 and the upper engaging portion 220 are engaged. In other words, the upper engagement portion 220 and the lower engagement portion 304 are engaged. Thus, a connection state can be formed by simply pressing one of the upper member 200 and the lower member 300 against the other.

  Note that the slide ring 308 has a lock function for holding the engagement between the upper engagement portion 220 (dent) and the lower engagement portion 304 (engagement claw 318). The slide ring 308 can slide up and down with respect to the main body 310. In the cross-sectional view of FIG. 2, the slide ring 308 moves upward with respect to the main body 310. The position of the slide ring 308 is set as a lock position. In this state, since the base 317 of the engagement elastic body 316 is in contact with the inner surface (first inner surface D1) of the slide ring 308, the engagement claw 318 is difficult to retreat. Therefore, the above-described locking mechanism works. On the other hand, although not shown, when the slide ring 308 is slid downward, the second inner surface D2 is disposed outside the engagement elastic body 316. The position of the slide ring 308 at this time is set as a release position. The second inner surface D2 is located on the radially outer side than the first inner surface D1. Therefore, a gap is secured between the outer side of the base 317 and the second inner surface D2. Due to this gap, the locking mechanism is released, and the engaging claw 318 is easily retracted. For this reason, the connection state can be easily released.

  Although not employed in the present embodiment, a slide restricting member that restricts the slide movement of the slide ring 308 may be further provided. This slide restricting member contributes to the maintenance of the lock mechanism, and thus contributes to the maintenance of the attached state. An example of the slide restricting member is a ring member that is disposed in a gap g1 (see FIG. 2) between the lower end of the slide ring 308 and the flange portion of the main body 310. This ring member is a member that is easily elastically deformed, for example, and is fitted into the gap g1. When the lock mechanism is released, the ring member may be removed. Another example of the slide restricting member is a biasing member that biases the slide ring 308 upward (in the direction from the release position to the lock position). When releasing the lock mechanism, an external force exceeding the urging force may be applied to the slide ring 308 and the slide ring 308 may be moved to the release position.

  In the hose connector 100, the two attachment methods described above are possible, and the convenience is high. In particular, the procedure B can be performed with one hand. The attachment of the hose connector 100 is very easy. Compared with a conventional hose connector that tightens screws arranged at a plurality of locations in the circumferential direction, the ease of mounting is clear.

  In the present application, the state where the hose connector 100 is attached to the discharge pipe f3 is also referred to as an attached state. In the attached state, the upper member 200 and the lower member 300 that are in the connected state sandwich the discharge pipe f3.

  In the attached state, the missing part 206 of the upper member 200 and the missing part 350 of the lower member 300 overlap each other, and the discharge pipe f3 is inserted through this overlapping missing part. As shown in FIG. 2, the lower end portion of the discharge pipe f <b> 3 bites into the cylindrical portion 322 of the packing 312 from the inside in the attached state. The packing 312 is in close contact with the outer peripheral surface of the discharge pipe f3. Water tightness is achieved by this adhesion.

  In the attached state, as long as the connected state is maintained, the packing 312 is in close contact with the discharge pipe f3. The water tightness is maintained by this adhesion.

  In the mounted state, the contact position c1 of the contact portion 210 is located on the water supply side (right side in FIG. 2) with respect to the center line CL1 of the lower end portion of the discharge pipe f3. Therefore, the reliability of fixing the hose connector 100 to the discharge pipe f3 is improved. The center line CL1 is a center line of a cylindrical portion that extends straight at the lower end of the discharge pipe f3.

  In the mounted state, there may be play between the hose connector 100 and the discharge pipe f3. That is, as long as the discharge pipe f3 does not come off, the attached hose connector 100 may move relative to the discharge pipe f3. When there is this play, it is preferable that the contact pressure (water tightness) between the packing 312 and the discharge pipe f3 is maintained in the entire range of the play.

  FIG. 8 is a perspective view showing a state in which the hose connector 400 according to the second embodiment is attached to the faucet f10. FIG. 9 is a cross-sectional view of FIG. FIG. 10 is an exploded perspective view of FIG. FIG. 11 is an exploded perspective view in which the lower member of FIG. 10 is further disassembled.

  The hose connector 400 includes an upper member 500 and a lower member 600. The upper member 500 and the lower member 600 are detachably connected to each other.

  The faucet f10 includes a faucet body f20, a discharge pipe f30, and an operation unit f40. Further, a valve (not shown) is incorporated in the faucet f10. By operating (rotating) the operation unit f40, it is possible to switch the discharged water and adjust the discharged water amount.

  In this embodiment, the faucet f10 can rotate the discharge pipe f30 with respect to the faucet body f20. In the art, this faucet f10 is called a universal faucet. In the faucet f10, the discharge pipe f30 extends obliquely. Therefore, in the attached state, the upper member 500 is positioned obliquely above the lower member 600 (see FIG. 9).

  As shown in FIG. 11, the upper member 500 is a member integrally formed as a whole. The upper member 500 is a substantially band-like member that is bent and extends in a U shape as a whole. Details of the upper member 500 will be described later.

  The lower member 600 includes a discharge pipe insertion portion 602, a lower engagement portion 604, and a hose connection portion 606. The discharge pipe insertion portion 602 has a cylindrical inner surface. The lower end portion of the discharge pipe f30 is inserted into the discharge pipe insertion portion 602. A hose (connector attached to the end of the hose) is connected to the hose connection portion 606.

  As shown in FIG. 11, the discharge pipe insertion portion 602 includes a slide ring 608, a main body portion 610, and a packing 612. The main body 610 has openings 614 at a plurality of locations (four locations) in the circumferential direction.

  The lower engagement portion 604 has an engagement elastic body 616. The engagement elastic bodies 616 are provided at a plurality of locations (four locations) in the circumferential direction. The engaging elastic body 616 includes a base 617 and an engaging claw 618 that extends obliquely downward from the upper end of the base 617. An engaging elastic body 616 is disposed in each of the openings 614. In the natural state where the pressure is not pressed, the engaging claw 618 protrudes radially inward from the opening 614.

  The packing 612 has a flange portion 620 and a cylindrical portion 622. The flange portion 620 extends outward from the upper end of the cylindrical portion 622 in the radial direction.

  As shown in FIG. 11, the hose connection portion 606 is configured by a nipple member 630. The nipple member 630 includes a hose connection portion 606 and a screw portion 632. The screw portion 632 is a male screw. On the other hand, as shown in FIG. 9, the main body portion 610 has a screw portion 640. The screw portion 640 is a female screw. The screw portion 632 and the screw portion 640 are screwed together.

  The packing 612 is fixed using the screw connection between the screw portion 632 and the screw portion 640. Specifically, the flange portion 620 of the packing 612 is sandwiched between the inner extending portion 642 of the main body portion 610 and the upper end surface 644 of the nipple member 630. As the screwing amount of the screw coupling is increased, the inner extending portion 342 and the upper end surface 644 approach each other, and the flange portion 620 is strongly sandwiched. With this configuration, the packing 612 is easily and reliably fixed.

  FIG. 12A is a perspective view of the upper member 500 viewed from the upper right side. FIG. 12B is a perspective view of the upper member 500 as viewed from the lower right side. FIG. 12C is a perspective view of the upper member 500 as viewed obliquely from the lower left. FIG. 13A is a plan view of the upper member 500. FIG. 13B is a front view of the upper member 500. FIG. 13C is a bottom view of the upper member 500. FIG. 14A is a right side view of the upper member 500. FIG. 14B is a cross-sectional view taken along line AA in FIG. FIG. 14C is a rear view of the upper member 500.

  The upper member 500 has a right side wall portion 502, a left side wall portion 503, and a connecting portion 504. As shown in FIG. 13C, the right side wall 502 forms a wall surface along the circumference. The left side wall portion 503 also constitutes a wall surface along the circumference. The right side wall 502 and the left side wall 503 form an inner wall surface along one circumferential surface.

  The connecting portion 504 has a strip shape. The connecting portion 504 is curved. The left and right connecting portions 504 are bent in a U shape. The connecting part 504 connects the right side wall part 502 and the left side wall part 503. A right wall 502 is provided at one end of the connecting portion 504. A left side wall portion 503 is provided at the other end of the connecting portion 504.

  As shown in FIGS. 12A and 12B, the upper member 500 is opened downward. Further, as shown in FIGS. 12A to 12C and FIG. 13B, the upper member 500 is open to the front side and the back side. The right side wall part 502 and the left side wall part 503 constitute a side wall part from which two places in the circumferential direction are missing. In other words, the upper member 500 has the right side wall part 502 and the left side wall part 503 as side wall parts divided at two locations in the circumferential direction.

  The upper member 500 has a contact portion 510 that can contact the discharge pipe f3 from above (see FIG. 9). A part (top) of the connecting portion 504 is a contact portion 510.

  A curved (U-shaped) connecting portion 504 forms a space communicating in the front-rear direction. That is, the connecting portion 504 has a front opening k1, a back opening k2, and an internal space s1. The internal space s1 is a space between the front opening k1 and the back opening k2.

  The upper member 500 has an upper engaging portion 520. The upper engaging portion 520 is provided on each of the right side wall portion 502 and the left side wall portion 503. That is, the upper engagement portion 520 includes a first engagement portion 520R provided on the right side wall portion 502 and a second engagement portion 520L provided on the left side wall portion 503. The upper engaging portion 520 is a dent. More specifically, the upper engagement portion 520 is a groove provided along the circumferential direction. When the upper engagement portion 520 of the right wall portion 502 and the upper engagement portion 520 of the left wall portion 503 are combined, a circumferential groove substantially along one circumferential surface is formed. However, due to the right side wall 502 and the left side wall 503 being separated from each other, the circumferential groove is divided at two locations in the circumferential direction (FIGS. 13B and 13C). )reference). That is, the circumferential groove is divided into the first engagement portion 520R and the second engagement portion 520L. The upper engagement portion 520 can engage with the engagement claw 618 of the engagement elastic body 616.

  As shown in FIGS. 12A and 12B, the right side wall 502 and the left side wall 503 form a circumferential inner surface. As illustrated in FIG. 13C, an internal space s <b> 2 is formed between the right side wall 502 and the left side wall 503. This internal space s2 is a cylindrical space.

  In the attached state, the discharge pipe f30 is inserted between the right side wall 502 and the left side wall 503. The discharge pipe f30 is tubular and has a circular cross section. For this reason, the discharge pipe f30 is stably held by the right side wall 502 and the left side wall 503.

  The connecting portion 504 can be elastically deformed. Due to the elastic deformation of the connecting portion 504, the width of the internal space s2 can change. In other words, the distance between the right side wall 502 and the left side wall 503 can change due to the elastic deformation of the connecting portion 504. The distance between the right side wall 502 and the left side wall 503 can be adjusted according to the thickness of the discharge pipe f30. For this reason, even if the thickness (diameter) and the bending state of the discharge pipe f30 vary, the upper member 500 can stably hold the discharge pipe f30. The upper member 500 can be deformed according to the size and shape of the discharge pipe f30, and is excellent in adaptability to the discharge pipe.

[Connection state and mounting state]
As shown in FIG. 9, the exhaust pipe f <b> 30 that is bent and bent is sandwiched by the connection state in which the upper member 500 and the lower member 600 are engaged. By this sandwiching, the hose connector 400 is fixed to the discharge pipe f30. As long as the connection state is maintained, the hose connector 400 does not come out of the discharge pipe f30.

  The connection state is formed by pressing one of the upper member 500 and the lower member 600 against the other. The upper member 500 may be pressed against the lower member 600, or the lower member 600 may be pressed against the upper member 500. The connection state is formed by one touch. Formation of a connection state is very easy.

As a method for attaching the hose connector 400, the following procedure C is possible. By this procedure C, the attachment state is completed simultaneously with the completion of the connection state.
(Procedure C) The upper member 500 is attached to the discharge pipe f30 by passing the lower end portion of the discharge pipe f30 from the rear opening k2 to the internal space s2. Next, the lower member 600 is pressed against the upper member 500 from below.

  Note that the procedure A and the procedure B described above can be performed by increasing the degree of elastic deformation of the connecting portion 504. On the other hand, in the procedure C, since elastic deformation of the connecting portion 504 can be suppressed, the burden on the connecting portion 504 is small.

  In any of procedures A to C, the upper engagement portion 520 (dent) is engaged with the lower engagement portion 604 (engagement elastic body 616), thereby completing the connection state. In the process in which one of the upper member 500 and the lower member 600 is pressed against the other, the lower end portion of the upper member 500 presses the engagement claw 618. Since the engaging claw 618 extends obliquely downward, the engaging claw 618 is easily pressed by the upper member 500 moving from top to bottom and retracts outward in the radial direction. When the upper engaging portion 520 (recess) of the upper member 500 reaches the position of the engaging claw 618, the engaging claw 618 is released from the pressing by the upper member 200 and protrudes inward in the radial direction. As a result, the engaging claw 618 and the upper engaging portion 520 are engaged. In other words, the upper engagement portion 520 engages with the lower engagement portion 604. Thus, the connection state can be formed by simply pressing one of the upper member 500 and the lower member 600 against the other.

  The slide ring 608 has a lock function that holds the engagement between the upper engagement portion 520 (dent) and the lower engagement portion 604 (engagement claw 618). The configuration of this locking mechanism is the same as that of the first embodiment described above.

  Even in the hose connector 400, it is easy to form a connected state, and convenience is high. Further, due to the ease of deformation of the upper member 500, the adaptability to the discharge pipe f30 is high. As described above, the interval between the right side wall portion 502 and the left side wall portion 503 can change depending on the thickness and bending of the discharge pipe f30. Due to this change, the distance between the first engagement portion 520R and the second engagement portion 520L also changes. This change in the distance depends on the relationship between the upper engagement portion 520 and the lower engagement portion 604. Does not affect As described above, the hose connector 400 is excellent in adaptability to changes in the shape of the discharge pipe f30 and can be easily formed. Compared with a conventional hose connector that tightens screws arranged at a plurality of locations in the circumferential direction, the ease of mounting is clear.

  Also in the second embodiment, in the attached state, the upper member 500 and the lower member 600 that are in the connected state sandwich the discharge pipe f3.

  As shown in FIG. 9, the lower end portion of the discharge pipe f <b> 30 bites into the cylindrical portion 622 of the packing 612 from the inside in the attached state. The packing 612 is in close contact with the outer peripheral surface of the discharge pipe f30. Water tightness is achieved by this adhesion.

  In the attached state, as long as the connected state is maintained, the packing 612 is in close contact with the discharge pipe f30. The water tightness is maintained by this adhesion.

  In the mounted state, the contact position c1 of the contact portion 510 is located on the water supply side (right side in FIG. 9) with respect to the center line CL1 of the lower end portion of the discharge pipe f3. Therefore, the reliability of fixing the hose connector 400 to the discharge pipe f30 is improved.

  In the mounted state, there may be play between the hose connector 400 and the discharge pipe f30. That is, as long as the discharge pipe f30 does not come off, the attached hose connector 400 may move relative to the discharge pipe f30. When there is this play, it is preferable that the contact pressure (watertightness) between the packing 612 and the discharge pipe f30 is maintained over the entire range of the play.

  In the hose connector 100 of the first embodiment, the upper engagement portion 220 of the upper member 200 has a missing portion 206 that is partially missing in the circumferential direction. The engagement between the upper engagement portion 220 and the lower engagement portion 304 is an uneven engagement. For this reason, even if the missing part 206 exists, the engagement between the upper engagement part 220 and the lower engagement part 304 is reliable and stable. Further, the missing portion 206 can be provided in accordance with the shape of the discharge pipe f3. The upper member 200 having the missing portion 206 is excellent in adaptability to the discharge pipe. In addition, the missing part 206 enables the procedure A and the procedure B described above.

  In addition, exact agreement is not requested | required between the inner surface shape of the upper member 200, and the shape of the outer surface of a discharge pipe. This point is also apparent from the size of the space s4 shown in FIG. In the attached state, it is only necessary that the discharge pipe does not come out of the hose connector in the connected state. In order to restrain the escape of the bent discharge pipe, the inner surface of the upper member 200 and the outer surface of the discharge pipe do not have to coincide with each other. In this way, the upper member 200 enables the hose connector 100 to be fixed to the discharge pipe f3 without requiring strict consistency with the shape of the discharge pipe f3. In addition to being able to cover the upper member 200 from above, it is excellent in adaptability to the discharge pipe.

  In the hose connector 400 of the second embodiment, there is a gap 506 between the right side wall 502 and the left side wall 503 (see FIGS. 13B and 13C). These gaps 506 are the missing portions. That is, the upper engagement portion 520 of the upper member 500 has a missing portion 506 in which a part in the circumferential direction is missing. Due to these missing portions 506, the connecting portion 504 can be easily deformed. The upper member 500 having the missing portion 506 is excellent in adaptability to the discharge pipe f30.

  In the hose connector 400 according to the second embodiment, the upper engagement portion 520 is divided into the first engagement portion 520R and the second engagement portion 520L by providing the missing portions 506 at two locations in the circumferential direction. ing. The upper member 500 includes a connecting portion 504 that connects the first engaging portion 520R and the second engaging portion 520L. This left and right connecting portion 504 has a contact portion 510. Since the discharge pipe f30 is tubular, the curved connecting portion 504 is likely to come into contact with the discharge pipe f30 from above while inserting the discharge pipe f30. The curved connecting portion 504 contributes to stably sandwiching the discharge pipe f30.

  In the first embodiment, the packing 312 has a cylindrical portion 322 that can be in close contact with the outer surface of the discharge pipe f3. The inner diameter of the cylindrical portion 322 is smaller than the outer diameter of the discharge pipe f3. When the discharge pipe f3 is inserted into the cylindrical part 322, the cylindrical part 322 comes into close contact with the outer surface of the discharge pipe f3. Water tightness is expressed by this adhesion. As shown in FIG. 2, a space s3 is provided outside the cylindrical portion 322. Water flows into this space s3 when passing water. Therefore, when passing water, the water pressure presses the cylindrical portion 322 toward the discharge pipe f3. For this reason, watertightness is further improved.

  Regarding the attachment of the hose connector, in the above-described procedure A and procedure B, the upper member is attached to the discharge pipe from the upper side. Therefore, the upper member can be attached from the upper side of the discharge pipe, and the lower member can be attached from the lower side, and attachment is easy. In the case of the procedure C described above, since the upper member cannot be attached from the upper side, the ease of attachment is reduced as compared with the procedure A and the procedure B. However, also in this procedure C, one-touch engagement is possible as in the procedures A and B. In these procedures A, B, and C, the labor and time for mounting are greatly reduced as compared with the conventional hose connector for fastening screws arranged at a plurality of locations in the circumferential direction.

  In comparison with the faucet connection coupling described in the aforementioned Japanese translation of PCT publication No. 2007-528458, the effect of the embodiment of the present application is as follows.

[Effect 1]
In the present embodiment, the engagement for connection is not a screw connection. For this reason, rotation regulation of the member (lower member) to which the hose is connected is possible. The hose connector 400 described above has an uneven engagement that restricts the rotation of the lower member 600 relative to the upper member 500. As shown in FIGS. 12A to 12C, the upper member 500 has an engaging convex portion 530. The engaging convex portion 530 extends in the insertion direction. On the other hand, as shown in FIG. 10, the lower member 600 has an engagement recess 650 that engages with the engagement protrusion 530. The engaging recess 650 extends in the insertion direction. In the connected state, the engaging convex portion 530 and the engaging concave portion 650 are engaged. By this engagement, the rotation of the lower member 600 with respect to the upper member 500 is restricted. The insertion direction means the insertion direction when the upper member 500 is inserted into the lower member 600.

  On the other hand, in the coupling for faucet connection described in JP-T-2007-528458, the above-mentioned rotation restriction is impossible because the engagement for connection is screw coupling. Therefore, even if it is desired to prevent rotation of the member (lower member) to which the hose is connected, the rotation cannot be prevented. An example of when it is desired to prevent rotation is when a branch shower is provided. The embodiment of the present application is excellent in convenience because the rotation can be restricted.

[Effect 2]
In the faucet connection coupling described in JP-T-2007-528458, the screw connection may be loosened by rotation of the hose. This looseness of the screw connection leads to water leakage. On the other hand, in the embodiment of the present application, since the engagement for connection is not screw coupling, water leakage does not occur even when the lower member rotates.

[Effect 3]
A rectifying plate is often arranged near the outlet inside the faucet discharge pipe. In the coupling for faucet connection described in JP-T-2007-528458, since there is a member (connector 20) inserted into the faucet discharge pipe, it cannot be attached to the faucet in which the rectifying plate is arranged. . On the other hand, in this embodiment, since there is no member inserted inside the faucet discharge pipe, it is attached even if there is a current plate.

[Effect 4]
In the faucet connection coupling described in JP-T-2007-528458, it is difficult to know how much the screw connection should be tightened. If tightening is insufficient, water leakage can occur. In addition, if the tightening is excessive, the packing is damaged. On the other hand, in the embodiment of the present application, it is easy to understand completion of engagement. For example, in the hose connector 100, the engagement claw 318 protrudes inside the upper engagement portion 220 (dent) simultaneously with the completion of engagement. Sound and / or vibration can occur during this protrusion. The completion of attachment can be recognized by these sounds and / or vibrations. That is, in the embodiment of the present application, the completion of attachment can be recognized by hearing or touch.

  Moreover, in this embodiment, completion of attachment can also be recognized visually. As shown in FIG. 8, the connecting portion 504 of the upper member 500 has an outer protrusion 540. The outer protrusion 540 is provided on each of the left and right sides. The first outer protrusion 540 is provided adjacent to the upper side of the right side wall 502. The second outer protruding portion 540 is provided adjacent to the upper side of the left side wall portion 503. The completion of attachment can be recognized by the distance between the upper end surface of the lower member 600 and the outer protrusion 540. For example, a state where there is no gap between the upper end surface of the lower member 600 and the outer protrusion 540 can be regarded as completion of attachment.

[Effect 5]
In the faucet connection coupling described in JP-T-2007-528458, it is necessary to pass the faucet discharge pipe through the cylindrical fixture 10, so that it is difficult to mount the discharge pipe when the discharge pipe is long. For example, attachment to the universal faucet 10 (see FIG. 10) described above is difficult. On the other hand, the upper member 200 and the upper member 500 described above are excellent in adaptability to the discharge pipe and have a wide range of usable faucets.

[Effect 6]
In the faucet connection coupling described in JP-T-2007-528458, the connection tool 20 is pushed upward by tightening the screw connection with the fastener 30, and the watertightness is secured by this push-up force. Therefore, when the one-touch connection described above is applied to this conventional configuration, it is difficult to ensure water tightness. This is because play is usually generated in the one-touch connection. On the other hand, in the hose connector 100 and the hose connector 400 described above, a close contact range between the packing and the discharge pipe is ensured along the direction of the center line CL1. For this reason, water tightness is ensured even if there is the play. That is, in the present embodiment, water tightness is ensured even if one-touch connection is adopted.

[Effect 7]
The packing 312 of the hose connector 100 described above has a cylindrical portion 322 extending along the center line CL1. By the length of this cylindrical part 322, the contact | adherence area of packing 312 and the discharge pipe f3 is ensured, and watertightness is improved. When this packing 312 is applied to a conventional faucet connection coupling, in addition to the length of the cylindrical portion 322, the length of the screw coupling between the fixture 10 and the fastener 30 is required. However, in the case of the faucet f1 as shown in FIG. 3, the discharge pipe f3 is short. If the packing 312 is applied in such a case, the length of the screw coupling between the fixture 10 and the fastener 30 cannot be secured. On the other hand, in this embodiment, since the above-mentioned engagement structure is employ | adopted, the length (length in center line CL1 direction) of an engagement part can be shortened. The hose connector 100 of the present embodiment is excellent in adaptability to the discharge pipe.

[Effect 8]
In the faucet connection coupling described in JP-T-2007-528458, an operation of fastening screws with the fixture 10 and the fastener 30 is necessary. In contrast, the above-described one-touch connection is excellent in mounting workability.

[Effect 9]
Since the lower member 300 has the same structure as an existing nipple joint, it can be shared with other products. By this commonization, the lower member 300 can be connected to an existing hose joint, an existing watering nozzle, or the like.

[Effect 10]
In the hose connector according to the embodiment of the present application, it is easy to clean because it is easy to attach and remove.

[Effect 11]
In the hose connector according to the present embodiment, the cylindrical portion of the packing can be expanded according to the outer diameter of the discharge pipe. Therefore, it can adapt to the discharge pipe of various outer diameters. Note that the packing used in the embodiment of the present application is also referred to as a wing packing.

[Effect 12]
In the faucet connection coupling described in JP-T-2007-528458, the engagement for connection is screw coupling. It is not preferable to provide a missing portion in the screw connection portion, and it is preferable that both the male screw and the female screw are provided on a complete cylindrical surface. From this viewpoint, the shapes of the upper member and the lower member are restricted. On the other hand, in the hose connector 100, the engagement is achieved even if the upper member 200 and the lower member 300 are provided with a missing portion. Further, in the hose connector 400, the upper engagement portion 520 is divided into the first engagement portion 520R and the second engagement portion 520L, and the engagement is achieved even though these distances can change. ing. This embodiment is excellent in the freedom degree of the shape of an upper member and a lower member.

[Effect 13]
In the faucet connection coupling described in JP-T-2007-528458, the connection tool 20 is pushed up by the axial force of the screw connection between the fixing tool 10 and the fastening tool 30 to ensure watertightness. Therefore, in this prior art, the upper member (fastener 30) applies a compressive force to the packing (connector 20). In order to apply this compressive force, the fixture 10 and the fastener 30 are cylindrical, and a screw connection is fastened between them. In this structure, the freedom degree of the shape of the fixing tool 10 and the fastener 30 is low, and the adaptability to a discharge pipe is limited. On the other hand, in the hose connector 100, the upper member 200 does not apply a compressive force to the packing 312 in the connected state. The upper member 200 regulates the movement of the lower member 300, but does not apply a force that increases the compression force of the packing 312. If the lower member 300 is pulled downward by some external force, the upper member 200 applies an upward force to the lower member 300 as a result. This upward force can affect the compressive force of the packing 312, but the upper member 200 does not apply an upward force to the lower member 300 in normal use.

  Thus, the role of the upper member 200 only regulates the movement of the lower member 300. The upper member 200 does not need to apply an upward force to the lower member 300. Therefore, the shape freedom degree of the upper member 200 can be made high, and it becomes possible to adapt to various discharge pipes f3.

  The hose connector of the present embodiment has the effects as described above, and particularly remarkable effects in actual use are mounting workability and adaptability to the discharge pipe.

  Regarding the workability of attachment, the hose connector 100 can be attached simply by covering the upper member 200 from above. In any of the procedure A and procedure B described above, the upper member 200 is covered from above the discharge pipe f3, and the lower member 300 is simply inserted into the discharge pipe f3 from the bottom, and both are simply connected by one touch. The point that attachment with one hand is possible is as described above. The same applies to the hose connector 400, and one-touch connection is possible. The amount of work for this installation is much less than conventional hose fittings. Regarding adaptability to the exhaust pipe, as described above, the upper member 200 and the upper member 500 can be adapted to various exhaust pipes. As described above, the wing packing can be adapted to various exhaust pipes. Thus, the hose connector according to the embodiment has an effect that the mounting workability is excellent, and the range of the compatible faucet is wider than that of the conventional product. The hose connector according to the embodiment is extremely convenient.

  In the hose connector 100, the engagement elastic body 316 is a separate member from the main body 310. However, it goes without saying that the engaging elastic body 316 may be integrated with the main body 310. Moreover, the number of the engagement elastic bodies 316 is not limited. From the viewpoint of the stability of the connected state, the number of the engagement elastic bodies 316 is preferably 2 or more. Considering the manufacturing cost of the hose connector 100, the number of the engagement elastic bodies 316 is preferably 6 or less, more preferably 5 or less, and more preferably 4 or less. When there are a plurality of engagement elastic bodies 316, it is preferable that these are equally distributed in the circumferential direction.

  Regarding the lock mechanism in the connected state, as described above, a slide restricting member that restricts the movement of the slide ring may be provided. As described above, the slide restricting member contributes to maintaining the slide ring in the locked position. Even if a downward external force not intended by the user acts on the slide ring, the connection state can be reliably maintained by the slide restricting member. When the slide restricting member is a member (for example, the above-described ring member) disposed in the gap g1 (see FIG. 2), the lock position can be more reliably maintained, but the mounting of the member requires a little trouble. Cost. On the other hand, when the slide restricting member is the above-described biasing member (spring or the like), there is a merit that the labor is reduced, but the certainty of maintaining the lock position is slightly lowered.

  As described above, screwing is employed as a fixing structure between the main body 310 and the nipple member 330 (see FIGS. 2 and 4). This fixing structure is not limited to screwing. Examples of the fixing structure include screwing, adhesion, and welding. As described above, screwing is preferable from the viewpoint of facilitating fixing of the packing 312. On the other hand, adhesion and welding are preferable from the viewpoint of suppressing the complexity of the molding die. Furthermore, welding is preferable in consideration of processing stability during mass production.

  Regarding the fixing of the hose connector to the faucet, as described above, the contact position c1 of the contact portion 210 is preferably located on the water supply side with respect to the center line CL1 (see FIG. 2). On the other hand, in a normal mounting state, the main body 310 is not in contact with the faucet f1, and the packing 312 is in contact with the faucet f1. That is, the packing 312 supports the entire lower member 300. However, when the hose connector 100 is tilted, the main body 310 comes into contact with the discharge pipe f3. By this contact, further inclination of the hose connector 100 is prevented, and as a result, the hose connector 100 is prevented from coming off. Further, instead of the main body 310, the slide ring 308 or the nipple member 330 may contact the faucet f1. As described above, depending on the posture of the hose connector 100, any part of the lower member 300 abuts the faucet f1 to prevent the hose connector 100 from being tilted, and thus the hose connector 100 is prevented from coming off. Has been. In addition, when the hose connector 100 is tilted or the like, the contact portion 210 may not be in contact with the faucet f1.

  As described above, depending on the posture of the hose connector 100, at least one of the contact portion 210 or the lower member 300 contacts the faucet f <b> 1, and further inclination of the hose connector 100 is suppressed. By this contact, the inclination of the hose connector 100 is regulated to a predetermined critical point, and the discharge pipe f3 from the hose connector 100 is prevented from coming off. One or more members selected from the group consisting of the contact portion 210, the slide ring 308, the main body portion 310, and the nipple member 330 function as an inclination suppressing member.

  For example, in the hose connector 400 shown in FIG. 8, the shape of the upper member 500 is substantially a band shape, and the consistency with the shape of the discharge pipe f30 is low. Even such an upper member 500 can be reliably fixed to the discharge pipe f30. The low consistency with the shape of the discharge pipe f30 means that the range of the discharge pipe f30 to which the upper member 500 can fit is wide. That is, the upper member 500 can be adapted to various exhaust pipes f30. Since the surface of the discharge pipe f3 is a smooth curved surface and is slippery, it has been thought that fixing the hose connector is not easy. However, it has been found that by sandwiching the exhaust pipe f30 that is bent and extended by the upper member 500 and the lower member 600, the upper member 500 can be fixed to the exhaust pipe f30 without being constrained so much. In the hose connector according to the present invention, the attachment work is easy, the adaptability to the discharge pipe is high, and the fixing is possible.

  In FIG. 2, what is indicated by a double-headed arrow D1 is the axial length of the space s3. The length D1 is preferably 5 mm or more, more preferably 7 mm or more, and more preferably 8 mm or more from the viewpoint of increasing the degree of freedom of the insertion length of the discharge pipe f3 with respect to the packing 312 and increasing the water tightness due to water pressure. In light of downsizing of the hose connector 100, the length D1 is preferably 16 mm or less, more preferably 14 mm or less, and even more preferably 12 mm or less. In the embodiment of FIG. 2, the length D1 is 9 mm. The axial direction means the direction of the center line CL1.

  In FIG. 2, a double arrow D <b> 2 indicates the axial length of the cylindrical portion 322. From the viewpoint of increasing the flexibility of the insertion length of the discharge pipe f3 with respect to the packing 312, the length D2 is preferably 9 mm or more, more preferably 10 mm or more, and more preferably 12 mm or more. From the viewpoint of miniaturization of the hose connector 100, the length D2 is preferably 20 mm or less, more preferably 18 mm or less, and even more preferably 16 mm or less. In the embodiment of FIG. 2, the length D2 is 14 mm.

  In FIG. 2, what is indicated by a double-headed arrow D3 is the maximum value of the length in the radial direction of the space s3. From the viewpoint of increasing the degree of freedom of the outer diameter of the discharge pipe f3, the length D3 is preferably 1 mm or more, more preferably 2 mm or more, and more preferably 3 mm or more. From the viewpoint of miniaturization of the hose connector 100, the length D3 is preferably 8 mm or less, more preferably 7 mm or less, and even more preferably 6 mm or less. In the embodiment of FIG. 2, the length D3 is 4 mm. The length D3 is measured in a state where the discharge pipe f3 is not inserted. The radial direction means a direction of a straight line that intersects the center line CL1 and is perpendicular to the center line CL1.

  In FIG. 13C, a double arrow D4 indicates a separation distance between the right side wall 502 and the left side wall 503. Considering holding the thin discharge pipe f3, it is preferable to secure the distance D4. In this respect, the distance D4 is preferably 0.5 mm or more, more preferably 1 mm or more, and more preferably 1.5 mm or more. When the thick discharge pipe f3 is passed, the connecting portion 504 is deformed, and the separation distance can be increased. Considering the continuity between the first engagement portion 520R and the second engagement portion 520L, it is not preferable that the separation distance is excessive. In this respect, the distance D4 is preferably 6 mm or less, more preferably 5 mm or less, and more preferably 4 mm or less. In the embodiment of FIG. 13, the distance D4 is 2 mm. The distance D4 is measured in a natural state where no external force is applied to the upper member 500.

  In FIG. 6, what is indicated by a double arrow θ <b> 1 is the central angle of the missing portion 206. From the viewpoint of improving the adaptability to the discharge pipe f3 having various thicknesses, the angle θ1 is preferably 60 ° or more, more preferably 70 ° or more, and further preferably 80 ° or more. In light of increasing the circumferential range of the upper engagement portion 220, the angle θ1 is preferably 120 ° or less, more preferably 110 ° or less, and more preferably 100 ° or less. In the embodiment of FIG. 6, the angle θ1 is 90 °. The center of the angle θ1 can be the center of the circumferential surface that exists on at least a part of the inner surface or the outer surface of the upper member 200.

  In FIG. 13, what is indicated by a double-headed arrow θ2 is the central angle of the front opening k1 (and the rear opening k2). From the viewpoint of enhancing the adaptability to the discharge pipe f3 having various thicknesses, the angle θ2 is preferably 60 ° or more, more preferably 70 ° or more, and further preferably 80 ° or more. Considering the durability of the connecting portion 504 in repeated elastic deformation, the angle θ2 is preferably 120 ° or less, more preferably 110 ° or less, and more preferably 100 ° or less. In the embodiment of FIG. 13, the angle θ2 is 90 °. The angle θ2 is measured in a natural state where no external force is applied to the upper member 500.

  FIG. 15 is a perspective view showing a state in which the hose connector 700 according to the third embodiment is attached to the faucet f1. 16 is a cross-sectional view of FIG.

  The hose connector 700 includes an upper member 800 and a lower member 300. The upper member 800 and the lower member 300 are detachably connected to each other.

  The difference between the hose connector 100 and the hose connector 700 described above is only the presence or absence of the second upper engagement portion 222. As shown in FIG. 16, the upper member 800 has an upper engagement portion 220, similar to the upper member 200 described above. In addition, the upper member 800 has a second upper engaging portion 222. In the connected state, the upper engaging portion 220 and the second upper engaging portion 222 have different axial positions. In addition to the upper engagement portion 220, the lower engagement portion 304 (the engagement claw 318 of the engagement elastic body 316) can also engage with the second upper engagement portion 222.

  The plurality of upper engaging portions 220 and 222 enhance adaptability to the discharge pipe f3 having different lengths. When the discharge pipe f <b> 3 is short as shown in FIG. 16, the engaging claw 318 engages with the upper engaging portion 220. When the discharge pipe f3 is long, the engaging claw 318 can engage with the second upper engaging portion 222. In this manner, by providing a plurality of upper engaging portions, compatibility with the discharge pipe f3 having different lengths is enhanced. From this viewpoint, it is preferable that a plurality of upper engaging portions having different axial positions in the connected state are provided. In this embodiment, the upper engaging portion has two stages, but it may have three or more stages.

  FIG. 17 is a perspective view showing a state in which the hose connector 900 according to the fourth embodiment is attached to the faucet f10. 18 is a cross-sectional view of FIG. FIG. 19 is an exploded perspective view of FIG. FIG. 20 is an exploded perspective view in which the lower member of FIG. 19 is further disassembled.

  The hose connector 900 has an upper member 1000 and a lower member 1100. The upper member 1000 and the lower member 1100 are detachably connected to each other.

  The faucet f10 includes a faucet body f20, a discharge pipe f30, and an operation unit f40. Further, a valve (not shown) is incorporated in the faucet f10. By operating (rotating) the operation unit f40, it is possible to switch the discharged water and adjust the discharged water amount.

  In this embodiment, the faucet f10 can rotate the discharge pipe f30 with respect to the faucet body f20. In the art, this faucet f10 is called a universal faucet. In the faucet f10, the discharge pipe f30 extends obliquely. For this reason, in the attached state, the upper member 1000 is located obliquely above the lower member 1100 (see FIG. 17).

  The upper member 1000 is a member formed integrally as a whole. The upper member 1000 is a member that is partially opened in the circumferential direction and opened downward as a whole. Details of the upper member 1000 will be described later.

  The lower member 1100 includes a discharge pipe insertion portion 1102, a ring engagement body 1104, and a hose connection portion 1106. The discharge pipe insertion portion 1102 has a cylindrical inner surface. The lower end portion of the discharge pipe f30 is inserted into the discharge pipe insertion portion 1102. A hose (connector attached to the end of the hose) is connected to the hose connection portion 1106. The hose connection portion 1106 has an O-ring 1108. The O-ring 1108 increases the water tightness at the connection portion.

  As shown in FIG. 20, the discharge pipe insertion portion 1102 includes a main body portion 1110 and a packing 1112. The main body 1110 is a cylindrical member as a whole. The main body 1110 has through holes 1114 at a plurality of locations (three locations) in the circumferential direction (see FIG. 20). The packing 1112 is a wing packing.

  The main body part 1110 has a missing part 1110a. The missing part 1110 a extends downward from the upper end surface of the main body part 1110. The missing portion 1110a prevents interference between the discharge pipe f30 and the lower member 1100. The missing portion 1110a increases the degree of freedom of shape of the faucet f10 to which the hose connector 900 can be attached.

  The ring engagement body 1104 is an example of a lower engagement portion that can engage with the upper engagement portion 1020 of the upper member 1000. The ring engagement body 1104 is an ended annular member. Details of the ring engagement body 1104 will be described later.

  The ring engaging body 1104 is detachably attached to the main body 1110 (lower member 1100). The ring engagement body 1104 is attached to the outer surface of the main body 1110 (lower member 1100) (FIG. 19). The ring engagement body 1104 is attached to the side surface of the main body 1110 (lower member 1100). The main body 1110 (lower member 1100) has a circumferential groove 1116 into which the ring engagement body 1104 is fitted (see FIG. 20).

  In the connected state in which the upper member 1000 and the lower member 1100 are engaged with each other, the ring engaging body 1104 can be detached from the lower member 1100 (main body portion 1110). In the present application, the relative positional relationship between the upper member 1000 and the lower member 1100 in the connected state is also referred to as a normal connection position. When the upper member 1000 and the lower member 1100 are in the normal connection position, the ring engaging body 1104 can be detached from the lower member 1100. When the upper member 1000 and the lower member 1100 (except for the ring engagement body 1104) are in the normal connection position, the ring engagement body 1104 can be attached to the lower member 1100.

  As shown in FIGS. 18 and 20, the packing 1112 includes a flange portion 1120 and a cylindrical portion 1122. The flange portion 1120 extends radially outward from the upper end of the cylindrical portion 1122.

  In the attached state, the discharge pipe f30 passes through the cylindrical portion 1122 of the flange portion 1120. The inner diameter of the cylindrical portion 1122 in the natural state is smaller than the outer diameter of the discharge pipe f30 passing through the cylindrical portion 1122. Thus, in the attached state, the cylindrical portion 1122 of the flange portion 1120 is in close contact with the outer surface of the discharge pipe f30 (see FIG. 18). This close contact prevents water leakage.

  As shown in FIG. 20, the hose connection portion 1106 is constituted by a nipple member 1130. The nipple member 1130 includes a hose connection portion 1106 and a coupling portion 1132. The coupling portion 1132 is fixed while being inserted inside the main body portion 1110. The packing 1112 is sandwiched between the main body 1110 and the nipple member 1130 and fixed.

  FIG. 21A is a perspective view of the upper member 1000 viewed from the upper right side. FIG. 21B is a perspective view of the upper member 1000 as viewed from the lower right side. FIG. 21C is a perspective view of the upper member 1000 viewed from the lower left side. FIG. 22A is a front view of the upper member 1000. FIG.22 (b) is sectional drawing along the AA line of Fig.22 (a). FIG. 22C is a rear view of the upper member 1000.

  The upper member 1000 has a side wall portion 1002 and an upper wall portion 1004. The upper member 1000 is opened downward. The side wall portion 1002 has a substantially cylindrical shape, but a part in the circumferential direction is missing. That is, the side wall portion 1002 has a missing portion 1006.

  The upper member 1000 has a contact portion 1010 that can contact the discharge pipe f3 from above (see FIG. 18). In the upper wall portion 1004 of the upper member 1000, the portion located above the missing portion 1006 is the contact portion 1010.

  In the attached state, the discharge pipe f30 passes through the missing portion 1006 of the upper member 1000 and reaches the lower member 1100 via the internal space of the upper member 1000.

  The upper member 1000 has a contact surface M1. The contact surface M <b> 1 is provided at the lower end of the upper member 1000. The contact surface M1 is an inclined surface. In the process of pressing one of the upper member 1000 and the lower member 1100 against the other, the abutment surface M1 can abut on an engagement protrusion 1104a (described later) of the ring engagement body 1104.

  The upper member 1000 has an upper engaging portion 1020. The upper engaging portion 1020 is provided on the side wall portion 1002. The upper engaging portion 1020 is a dent. More specifically, the upper engagement portion 1020 is a groove provided along the circumferential direction. However, in the region where the missing portion 1006 exists, the upper engaging portion 1020 (groove) is interrupted. The upper engagement portion 1020 can engage with an engagement protrusion 1104 a (described later) of the ring engagement body 1104.

  The upper member 1000 has a rotation stopper recess 1030. The anti-rotation recess 1030 is a groove extending in the insertion direction, and the lower end of the groove is open. On the other hand, the main body 1110 has a detent projection 1118 (see FIG. 20). In the connected state, the rotation prevention recess 1030 and the rotation prevention projection 1118 are engaged. The rotation of the upper member 1000 relative to the lower member 1100 (main body portion 1110) is restricted by the concave-convex engagement.

  FIG. 23A is a perspective view of the ring engagement body 1104, and FIG. 23B is a perspective view of the ring engagement body 1104 viewed from another viewpoint. FIG. 23C is a plan view of the ring engagement body 1104, and FIG. 23D is a bottom view of the ring engagement body 1104.

  The ring engagement body 1104 is a substantially C-shaped member. The ring engagement body 1104 is an ended annular member. The ring engaging body 1104 includes an engaging protrusion 1104a, a first end t1, a second end t2, and a connecting portion 1104b.

  The material of the ring engagement body 1104 is resin. The connecting portion 1104b can be elastically deformed. The ring engagement body 1104 can be elastically deformed so that the distance between the first end t1 and the second end t2 is increased. This elastic deformation of the ring engagement body 1104 is also referred to as expansion deformation. The ring engagement body 1104 that has been expanded and deformed tends to return to a natural state by elastic force. That is, the ring engagement body 1104 that has been expanded and deformed can be elastically deformed so that the distance between the first end t1 and the second end t2 is reduced. This elastic deformation of the ring engaging body 1104 is also referred to as reduced diameter deformation.

  The ring engagement body 1104 has a plurality of engagement protrusions 1104a protruding inward in the radial direction. In the embodiment of FIG. 23, as a plurality (three) of engagement protrusions 1104a, an engagement protrusion p1, an engagement protrusion p2, and an engagement protrusion p3 are provided. An engagement protrusion p3 is provided between the engagement protrusion p1 and the engagement protrusion p2. An engagement protrusion p1 is provided between the engagement protrusion p3 and the first end t1. An engagement protrusion p2 is provided between the engagement protrusion p3 and the second end t2.

  The connecting portion 1104b connects the engaging protrusions 1104a to each other. The 1st connection part 1104b has connected the engagement protrusion part p1 and the engagement protrusion part p3. The 2nd connection part 1104b has connected the engagement protrusion part p2 and the engagement protrusion part p3. The engagement protrusion 1104a protrudes inward in the radial direction with respect to the connecting portion 1104b.

  As described above, the ring engaging body 1104 is attached to the outer surface of the lower member 1100 (main body portion 1110). This attachment is easy. When the first end t1 and the second end t2 of the ring engagement body 1104 are pressed against the main body portion 1110 (the circumferential groove 1116 thereof), the ring engagement body 1104 undergoes a diameter reduction deformation through the expansion deformation, and the main body portion 1110 Groove 1116). At the same time, each of the engagement protrusions 1104a passes through the through hole 1114 of the main body part 1110 and protrudes inward from the inner surface of the main body part 1110 (see FIG. 19). This state of the ring engagement body 1104 is also referred to as a regular attachment state.

[Connection state and mounting state]
As shown in FIG. 18, the exhaust pipe f <b> 30 that is bent and bent is sandwiched by the connection state in which the upper member 1000 and the lower member 1100 are engaged. By this sandwiching, the hose connector 900 is fixed to the discharge pipe f30. As long as the connection state is maintained, the hose connector 900 will not come out of the discharge pipe f30.

  The connection state is formed by pressing one of the upper member 1000 and the lower member 1100 against the other. The upper member 1000 may be pressed against the lower member 1100, or the lower member 1100 may be pressed against the upper member 1000. The connection state is formed by one touch. Formation of a connection state is very easy.

  FIGS. 24A and 24B are cross-sectional views illustrating the connection between the upper member 1000 and the lower member 1100. FIG. In this connection, the ring engagement body 1104 is in a normal wearing state. By pressing one of the upper member 1000 and the lower member 1100 against the other, the contact surface M1 of the upper member 1000 comes into contact with the engagement protrusion 1104a (each of the engagement protrusions p1 to p3). The contact surface M1 is inclined so as to be closer to the inner side of the upper member 1000 as it approaches the end surface of the upper member 1000. For this reason, the contact surface M1 displaces the engagement protrusion 1104a outward as the upper member 1000 moves toward the lower member 1100. Due to this displacement, the ring engaging body 1104 is expanded and deformed. When the upper engagement portion 1020 of the upper member 1000 reaches the position of the engagement protrusion 1104a, the ring engagement body 1104 is deformed by a reduced diameter due to the elastic restoring force of the ring engagement body 1104. Due to this reduced diameter deformation, the engagement protrusion 1104a enters (engages) the upper engagement portion 1020 (FIG. 24B).

As a method for attaching the hose connector 900, the following procedures D and E are possible. By the procedures D and E, the attachment state is completed simultaneously with the completion of the connection state.
(Procedure D) The upper member 1000 is placed on the discharge pipe f3 from above, and the lower member 1100 is pressed against the upper member 1000 from below while the discharge pipe f30 is inserted into the discharge pipe insertion portion 1102.
(Procedure E) The lower member 1100 is attached to the discharge pipe f30 from below, and then the upper member 1000 is pressed against the lower member 1100 from above.

  Regarding the workability of attachment, the hose connector 900 can be attached simply by covering the upper member 1000 from above. In any of the procedure D and procedure E described above, the upper member 1000 is simply placed over the discharge pipe f30, and the lower member 1100 is simply inserted into the discharge pipe f30 from the bottom to perform one-touch connection. Therefore, attachment with one hand is also possible.

  In these procedures D and E, the ring engaging body 1104 is attached to the lower member 1100 before the upper member 1000 and the lower member 1100 are connected. In other words, before the upper member 1000 and the lower member 1100 are connected, the ring engagement body 1104 is brought into the normal mounting state. This is also referred to as pre-installation. In the case of pre-mounting, the connection state can be formed by simply pressing one of the upper member 1000 and the lower member 1100 against the other. That is, one-touch connection is possible.

  As described above, the ring engagement body 1104 is detachably attached to the outside of the lower member 1100. Therefore, the ring engagement body 1104 can be mounted after the upper member 1000 and the lower member 1100 are in the same positional relationship as the connected state. This is also referred to as post-installation. From the viewpoint of smooth connection (one-touch connection), the above pre-installation is preferable to the post-installation. That is, it is preferable that the ring engagement body 1104 is attached in a normal wearing state in advance as in the procedures D and E described above. In other words, before pressing one of the upper member 1000 and the lower member 1100 against the other, the ring engagement body 1104 is mounted on the lower member 1100 (the ring engagement body 1104 is in a normal mounting state). Is preferred.

  Thus, in the hose connector 900, the lower engagement portion is configured by the ring engagement body 1104 that is an end-shaped annular member. The upper member 1000 has a recess 1020 as an upper engaging portion and a contact surface M1. The lower member 1100 has a through hole 1114 (FIG. 20). The ring engagement body 1104 is fitted on the outside of the lower member 1100. Due to the elastic deformation (expansion deformation and diameter deformation) of the ring engagement body 1104, the ring engagement body 1104 is detachably attached to the outer surface of the lower member 1100. When the ring engagement body 1104 is in the normal mounting state, the engagement protrusion 1104a passes through the through hole 1114 and protrudes into the lower member 1100 (FIG. 19). The contact surface M1 presses one of the upper member 1000 and the lower member 1100 against the other, thereby coming into contact with the engagement protrusion 1104a protruding inside the lower member 1100 to cause the ring engagement body 1104 to move. It is configured to be expanded and deformed (FIG. 24A). The engagement protrusion 1104a enters the recess 1020 due to the reduced diameter deformation of the ring engagement body after the expansion deformation. Thereby, the connection state is formed (FIGS. 18 and 24B).

  From the viewpoint of stable engagement, the number of engagement protrusions 1104a is preferably 2 or more, and more preferably 3 or more. If the size of the engagement protrusion 1104a is secured, the number of the engagement protrusions 1104a is limited. Further, if the number of the engagement protrusions 1104a is excessive, the structure becomes complicated, which is not preferable in terms of smooth engagement. In this respect, the number of the engagement protrusions 1104a is preferably 6 or less, and more preferably 4 or less.

  The ring engagement body 1104 can be mounted even when upside down. Even when the ring engagement body 1104 is mounted in the upside down direction, the contact surface M1 (inclined surface) of the upper member 1000 can press the engagement protrusion 1104a of the ring engagement body 1104. Even if the ring engagement body 1104 is mounted upside down, one-touch connection is possible.

  Both the connection structure (engagement claw type) described in the first to third embodiments and the connection structure (ring engagement body type) of the hose connector 900 according to the fourth embodiment have a hydraulic pressure. Even if it acts, it is hard to come off from the faucet. That is, both types have high omission prevention performance. In particular, the hose connector 900 has higher slip prevention performance. At the time of high water pressure, the force (water pressure) in the direction of separating the upper member and the lower member is increased. In the case of the engagement claw type described above, the clearance in the insertion direction is ensured between the upper engagement portion and the engagement claw so that all of the plurality of engagement claws arranged in the circumferential direction are securely engaged. (Engagement play) needs to be relatively large. Further, the engaging claw can be deformed by water pressure. On the other hand, the ring engagement body type requires less clearance, and deformation of the ring engagement body 1104 is small even at high water pressure. Therefore, the ring engagement body type hose connector has an extremely high prevention performance against high water pressure. Of course, the engaging claw-type hose connector can also have a practical disconnection preventing performance.

  The ring engagement body type has a simple structure and a smaller number of parts than the engagement claw type. Therefore, the ring engagement body type is easy to assemble and has few failures. In addition, since the ring engagement body is detachable, it is easy to replace parts independently. Further, since the ring engagement body can be attached and detached even by the user, it can be shipped without mounting the ring engagement body, and parts can be replaced on the user side. The ring engagement type has a simple structure and can realize engagement with high reliability with little clearance (play).

  Examples of the material of the upper member include resin and metal. As the resin, a resin excellent in strength and productivity is preferable. From the viewpoint of ease of molding, the resin is preferably a thermoplastic resin. From the viewpoint of ease of molding, more preferable resins include polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), and polyacetal (POM). From the viewpoint of strength, polyacetal (POM) is more preferable. In the embodiment described above, the material of the upper member is polyacetal (POM).

  Resin and metal are illustrated as a material of an engagement elastic body. As the resin, a resin excellent in strength and productivity is preferable. From the viewpoint of ease of molding, the resin is preferably a thermoplastic resin. From the viewpoint of ease of molding, more preferable resins include polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), and polyacetal (POM). From the viewpoint of strength, polyacetal (POM) is more preferable. In the embodiment described above, the material of the engagement elastic body is polyacetal (POM).

  Examples of the material of the slide ring include resin and metal. As the resin, an inexpensive resin excellent in productivity is preferable. From the viewpoint of ease of molding, the resin is preferably a thermoplastic resin. From the viewpoint of ease of molding, more preferable resins include polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), and polyacetal (POM). From the viewpoint of being inexpensive and excellent in strength, ABS is more preferable. In the embodiment described above, the material of the slide ring is ABS.

  Resin and metal are illustrated as a material of a main-body part. As the resin, an inexpensive resin excellent in productivity is preferable. From the viewpoint of ease of molding, the resin is preferably a thermoplastic resin. From the viewpoint of ease of molding, more preferable resins include polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), and polyacetal (POM). From the viewpoint of being inexpensive and excellent in strength, ABS is more preferable. In the above-described embodiment, the material of the main body is ABS.

  Resin and metal are illustrated as a material of a hose connection part. As the resin, an inexpensive resin excellent in productivity is preferable. From the viewpoint of ease of molding, the resin is preferably a thermoplastic resin. From the viewpoint of ease of molding, more preferable resins include polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), and polyacetal (POM). From the viewpoint of being inexpensive and excellent in strength, ABS is more preferable. In the above-described embodiment, the material of the hose connection portion is ABS.

  The ring engagement body 1104 is preferably excellent in strength and needs to have a characteristic of bending back. As a material of the ring engagement body 1104, a resin is preferable. The resin is preferably a thermoplastic resin from the viewpoint of ease of molding. From the viewpoint of ease of molding, polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS) and polyacetal (POM) are more preferable. POM is more preferable from the viewpoint of excellent strength.

  The present application also describes other inventions not included in the invention according to the independent claims. Each form, member, configuration, and the like described in the claims and embodiments of the present application are recognized as inventions based on the respective functions and effects.

  Each form, member, configuration, etc. shown in each of the above embodiments is not limited to all of the forms, members, or configurations of these embodiments. It can be applied to all described inventions.

  The hose connector described above can be applied to any faucet.

DESCRIPTION OF SYMBOLS 100 ... Hose connector 200 ... Upper member 206 ... Missing part 210 ... Contact part 220 ... Upper engaging part 300 ... Lower member 302 ... Drain pipe insertion part 304 ... Lower engagement part 306 ... Hose connection part 308 ... Slide ring 310 ... Main body part 312 ... Packing
316: engagement elastic body 318 ... engagement claw 330 ... nipple member 400 ... hose connector 500 ... upper member 502 ... right side wall 503 ... left side wall 504 ··· Connection portion 520 ··· Upper engagement portion 600 ··· Lower member 606 ··· Hose connection portion 608 ··· Slide ring 610 ··· Body portion of lower portion 612 ··· Packing 900 ···・ Hose connector 1000 ... Upper member 1020 ... Upper engagement part (recess)
DESCRIPTION OF SYMBOLS 1100 ... Lower side member 1104 ... Ring engagement body 1104a ... Engagement protrusion part

Claims (6)

Having an upper member and a lower member that can be detachably connected to each other;
The upper member has a contact portion that can contact the discharge pipe of the faucet from the upper side, and an upper engagement portion,
The lower member has a discharge pipe insertion portion having packing, a lower engagement portion that can be engaged with the upper engagement portion, and a hose connection portion,
Due to the connection state in which the upper engagement portion and the lower engagement portion are engaged with each other, the discharge pipe extending in a bent manner can be sandwiched,
By pressing one of the upper member and the lower member against the other, the connection state is formed ,
The hose connection part which the said upper member can attach to the said discharge pipe from the upper side . Having an upper member and a lower member that can be detachably connected to each other;
  The upper member has a contact portion that can contact the discharge pipe of the faucet from the upper side, and an upper engagement portion,
  The lower member has a discharge pipe insertion portion having packing, a lower engagement portion that can be engaged with the upper engagement portion, and a hose connection portion,
  Due to the connection state in which the upper engagement portion and the lower engagement portion are engaged with each other, the discharge pipe extending in a bent manner can be sandwiched,
  By pressing one of the upper member and the lower member against the other, the connection state is formed,
  The lower engagement portion is constituted by a ring engagement body that is an end-shaped annular member,
  The ring engagement body has an engagement protrusion;
  The upper member has a concave portion as the upper engaging portion and a contact surface,
  The lower member has a through hole;
  When the ring engagement body is in a normal mounting state, the engagement protrusion protrudes into the lower member through the through hole,
  The abutting surface presses one of the upper member and the lower member against the other, thereby abutting against the engagement protrusion protruding inside the lower member to cause the ring engaging body to move. Configured to expand and deform,
  The hose connector, wherein the engagement protrusion enters the recess due to the diameter-reducing deformation of the ring engagement body after the expansion deformation. Having an upper member and a lower member that can be detachably connected to each other;
The upper member has a contact portion that can contact the discharge pipe of the faucet from the upper side, and an upper engagement portion,
The lower member has a discharge pipe insertion portion having packing, a lower engagement portion that can be engaged with the upper engagement portion, and a hose connection portion,
Due to the connection state in which the upper engagement portion and the lower engagement portion are engaged with each other, the discharge pipe extending in a bent manner can be sandwiched,
In the connected state, the upper member does not apply compressive force to the packing ,
The lower engagement portion is constituted by a ring engagement body that is an end-shaped annular member,
The ring engagement body has an engagement protrusion;
The upper member has a concave portion as the upper engaging portion and a contact surface,
The lower member has a through hole;
When the ring engagement body is in a normal mounting state, the engagement protrusion protrudes into the lower member through the through hole,
The abutting surface presses one of the upper member and the lower member against the other, thereby abutting against the engagement protrusion protruding inside the lower member to cause the ring engaging body to move. Configured to expand and deform,
The hose connector , wherein the engagement protrusion enters the recess due to the diameter-reducing deformation of the ring engagement body after the expansion deformation . The hose connection part according to any one of claims 1 to 3, wherein the upper engagement part has a missing part in which a part in the circumferential direction is missing. The upper engagement portion is divided into a first engagement portion and a second engagement portion by providing the missing portion at two locations in the circumferential direction,
The upper member has a connecting portion connecting the first engaging portion and the second engaging portion;
The hose connection part according to claim 4 , wherein the connecting part has the contact part. The packing has a cylindrical portion that can be in close contact with the outer surface of the discharge pipe,
The hose connection part according to any one of claims 1 to 5 , wherein a space is provided outside the cylindrical part.

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