JP2605240Y2 - Hose fittings - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose joint which is attached to a water tap and connects the tap with a hose.

[0002]

2. Description of the Related Art As a conventional hose joint, the one shown in FIG. 17 has been proposed (see Japanese Patent Application Laid-Open No. 2-2515). That is, the joint body 50 is made of resin, and is formed of a cylindrical body having an upper end opening 51 and a lower end opening 52. In this joint main body 50, screw holes 53, 53 are formed in a radial direction at an upper end portion surrounding the upper end opening 51, and metal thumb screws 54, 54 are screwed into the screw holes 53, 53. Have been combined.

In such a structure, when the joint body 50 is mounted on the faucet, an end of a faucet (not shown) is fitted into the upper end opening 51, and then the thumb screws 54, 54 are screwed toward the center of the joint body 50. Let go. As a result, the tips of the thumb screws 54, 54 are pressed against the peripheral surface of the faucet, and the joint body 5
0 is fixed to the faucet, and a hose connected to the lower end opening 52 of the joint body 50 is connected to the faucet via the joint body 50.

[0004]

However, in such a conventional hose joint, when the thumb screw 54 is screwed forward and its tip starts to press against the peripheral surface of the faucet, the reaction of the thumb screw 54 occurs due to the reaction. Opposite tooth surfaces of the male screw portion and the female screw portion of the screw hole 53 are rubbed, and a stress is generated to deform the male screw. At this time, since the screw hole 53 is provided in the joint body 50 formed of a synthetic resin, the facing tooth surfaces of the male screw portion of the thumb screw 54 and the female screw portion of the screw hole 53 are rubbed, so that the screw hole 53 is formed. The female screw portion of the hole 53 is deformed or worn, and the engagement accuracy is reduced.

For this reason, when the thumb screw 54 is unscrewed and the joint main body 50 is once removed from the faucet and then is to be mounted again, the engagement accuracy between the thumb screw 54 and the screw hole 53 is reduced. As a result, the thumb screw 54 is loosened. For this reason, it is difficult to press the tip of the thumbscrew 54 against the peripheral surface of the faucet with a pressing force necessary to fix the joint main body 50 against the water pressure, and as a result, the joint main body 50 comes off from the faucet. This causes inconvenience.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a hose joint having an improved fixing durability against a faucet.

[0007]

According to the present invention, in order to solve the above-mentioned problem, a fixed screw which is screwed in a radial direction to an upper end portion of a joint body composed of a resin-formed upper and lower end opening cylindrical body. Screw the screw, the end of the fixing screw is pressed against the peripheral surface of the faucet fitted inside the upper end opening of the joint body, the hose joint to fix the joint body to the faucet, at the upper end of the joint body The lower part is open, and the opposing outer peripheral wall and inner part
The peripheral wall and the upper wall formed integrally with the upper end of both walls
Forming an accommodating portion having the outer peripheral wall of the accommodating portion and the inner portion.
A metal nut is fitted and arranged between the peripheral walls, and the fixing screw is screwed to the nut.

Further , upper and lower openings formed by resin are used.
Radially screw into the upper end of the joint body consisting of
Screw the fixing screw and connect the end of the fixing screw to the upper end of the joint body.
The fitting body is pressed against the peripheral surface of the faucet
In a hose joint fixed to a faucet,
At the end, it was surrounded by opposing outer and inner peripheral walls
While forming a space, between the outer peripheral wall and the inner peripheral wall
A pair of crossed opposed cross walls are provided, and
The outer peripheral wall, the inner peripheral wall, and the upper end of both walls are integrally formed.
Lower opening defined by an upper wall and a pair of said crossing walls
The outer peripheral wall and the inner peripheral wall of the accommodating portion are formed.
Insert a metal nut between the
Screws are screwed.

Preferably, the nut is a square nut
is there.

[0010]

[0011]

In the above construction, when the fixing screw is screwed forward and its tip starts to press against the peripheral surface of the faucet, the opposing tooth surfaces of the male screw part of the fixing screw and the female screw part of the nut due to the reaction are rubbed. Then, a stress is generated that deforms the male screw.
At this time, since the nut is made of metal, even if the facing tooth surfaces of the male screw part of the fixing screw and the female screw part of the nut are rubbed, the female screw part of the nut is not deformed or worn, and is not used for a long time. Thus, the initial engagement accuracy is maintained.

An outer peripheral wall and an inner peripheral wall are formed at the upper end of the joint main body, and a nut is inserted between the two walls. The nut can be clamped between the walls. Also,
By accommodating portion is formed by the opposing outer peripheral wall and the inner circumferential wall and both walls upper end integrally molded top wall of never nut disposed in the housing portion is visible from the outside.

Further, by forming a cross wall between the outer peripheral wall and the inner peripheral wall, the outer peripheral wall and the inner peripheral wall are connected via the cross wall, and the outer wall and the inner wall are provided on both sides of the nut arranged in the accommodating portion. By strongly pressing the peripheral wall, the fixing performance of the nut can be improved. Here, if the nut is a square nut, can be those wherein the outer peripheral wall at accommodating portion comprising a rectangular shape by being defined by the inner peripheral wall and a pair of intersecting walls, to accurately detent nut .

[0014]

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIGS. 1 to 3, the joint main body 1 is configured by screwing an upper cylindrical body 2 and a lower cylindrical body 3 both formed of a synthetic resin. The lower cylinder 3 is
As shown in detail in FIGS. 4 to 7, a hose connecting portion 5 having a cylindrical shape having an irregular cross section and having a lower end opening 4 at a lower end portion.
And a groove 6 into which a packing described later is fitted is formed at the upper end.

As shown in FIGS. 8 to 12, the upper cylindrical body 2 has a cylindrical shape with an irregular cross section, and a lower end of the lower cylindrical body 4 is provided with a circular upper opening 7. In the peripheral portion of the upper end opening 7, an annular outer peripheral wall 8, an inner peripheral wall 9 provided inside and facing the outer peripheral wall 8, and an upper end portion of the outer peripheral wall 8 and the inner peripheral wall 9 are provided. The upper wall 10 is integrally formed. As shown in FIG. 11, reinforcing ribs 11, 11, 11 bridged between both walls 8, 9 are integrally formed between the outer peripheral wall 8 and the inner peripheral wall 9 at positions displaced by 120 °, respectively, as clearly shown in FIG. Have been. Further, each reinforcing rib 11, 11, 1
A pair of crossing walls 12, 12 facing each other are joined and bridged between the outer wall 8 and the inner wall 9 between the two.
Thereby, the upper cylindrical body 2 is defined by the outer peripheral wall 8, the inner peripheral wall 9, the upper wall 10, and the pair of intersecting walls 12, 12, and the three housings which are open and rectangular in the lower part are formed. A part 13 is formed.

In the housing portion 13, the outer peripheral wall 8 is
As shown in (1), a long hole 14 is formed in the vertical direction, and a notch 15 having an open lower portion is provided in the inner peripheral wall 9 at a position facing the long hole 14. FIG.
In FIG. 9 and FIG. 9, reference numeral 16 denotes a receiving portion provided to avoid interference with the faucet 17 for tap water.

A square nut 18 made of metal is inserted and fitted into the housing 13. The square nut 1
8 is flat on both sides, both sides of which are in contact with the cross wall 12, both ends on one side are in contact with the outer peripheral wall 8,
Further, the central portion on the other surface is in contact with the inner peripheral wall 9. A screw hole 18a is formed in the center of the square nut 18 as shown in FIG. 1, and a wing screw 19 made of metal and serving as a fixing screw is screwed into the screw hole 18a. .

On the other hand, as shown in FIG. 1, a packing 20 molded of rubber or soft synthetic resin and fitted in the groove 6 is provided inside the joint body 1. As shown in detail in FIGS. 13 to 16, the packing 20 has a through hole 21 that fits outside the faucet 17, and the through hole 21
Is provided with a curved surface 22 whose upper end expands to a large diameter. Further, a ridge 2 formed along the circumferential direction and closely contacting the peripheral surface of the faucet 17 is provided on the lower end side of the through hole 21.
3 are provided in a plurality of stages, and as shown in FIG. 16, the tip 23a of the ridge 23 is formed in a semicircular cross section.

In the present embodiment having the above-described structure, when attaching the joint body to the faucet 17, the lower end of the faucet 17 is inserted into the through hole 21 of the packing 20 from the upper end opening 7 as shown in FIG. Then, the thumb screw 19 is advanced. Then, the tip portion 19a of the thumbscrew 19 presses against the peripheral surface of the faucet 17, whereby the joint body 1
Fixed to At this time, when the distal end portion 19a of the thumb screw 19 starts to press against the peripheral surface of the faucet 17, the opposing teeth of the male screw portion of the thumb screw 19 and the male screw portion provided in the screw hole 18a of the square nut 18 due to the reaction. The surfaces are rubbed, producing stress that deforms the external thread.

However, since the square nut 18 is made of metal, even if the opposing tooth surfaces of the male screw part of the thumb screw 19 and the female screw part of the square nut 18 rub, the female screw part of the square nut 18 is deformed or deformed. No wear. Therefore,
When the thumb screw 19 is withdrawn and the joint main body 1 is once removed from the faucet 17 and then the mounting is attempted, the initial engagement accuracy between the thumb screw 19 and the screw hole 18a can be maintained. As a result, the thumbscrew 19 is not loosened, and the tip end of the thumbscrew 19 is pressed against the peripheral surface of the faucet with a pressing force necessary to maintain the mounted state of the joint body 1 against the applied water pressure. To the faucet 1
7 can be improved in fixing durability.

Further, since the front and back surfaces are interposed between the curved outer peripheral wall 8 and the inner peripheral wall 9 with the square nuts 18 having a flat surface, no special nut fixing means such as bonding is used. A square nut 18 can be clamped between the curved walls 8 and 9. In addition, since the square nut 18 disposed in the housing 13 is invisible from the outside,
Even if the metal square nut 18 is disposed on the resin upper cylinder 3, the appearance quality does not deteriorate.

Further, since the outer peripheral wall 8 and the inner peripheral wall 9 are connected via the reinforcing rib 11 and the cross wall 12,
The outer peripheral wall 8 and the inner peripheral wall 9 are strongly pressed against both surfaces of the square nut 18 arranged in the housing portion 16, so that the fixing performance of the square nut 18 can be improved. Moreover, since the square nut 18 is used in this embodiment, both sides of the square nut 18 are in contact with the opposing cross walls 12 and 12 and the upper side is in contact with the upper wall 10, The outer peripheral wall 8 and the inner peripheral wall 9 are in contact with the front and back surfaces of the square nut 18 so that the square nut 18 can be accurately prevented from rotating.

Further, the packing 20 has a tip 23a.
Is formed in a semicircular cross-section, and the ridges 23 that are in close contact with the peripheral surface of the faucet 17 are provided in a plurality of stages, so that the packing 20 is linearly formed in the peripheral surface of the faucet 17 in a plurality of stages. , And the watertightness between the faucet 17 and the joint body 1 can be improved.

In the embodiment, the square nut 18 is fitted and arranged in the lower opening-shaped storage portion 13. However, by embedding the square nut 18 inside the upper cylindrical body 2, the square nut 18 can be visually recognized from the outside. Square nut 18
Not only can be arranged, but also the rotation of the square nut 18 can be more reliably prevented.

[0026]

As has been described above devised the present invention is a metal nut arranged on the upper end portion of the joint body, and so screwing the fixing screw to be pressed against the circumferential surface of the faucet to the nut. Therefore, even if friction is caused between opposing tooth surfaces of the male screw portion of the fixing screw and the female screw portion of the nut, the female screw portion of the nut is not deformed or worn. Therefore, when the fixing screw is withdrawn and the joint main body is once removed from the faucet, and then the user tries to mount it again, the fixing accuracy of the fixing screw and the nut can be maintained at the initial engagement accuracy. As a result, the tip of the fixing screw is pressed against the peripheral surface of the faucet with the pressure required to maintain the mounted state of the joint body against the applied water pressure without loosening of the thumb screw. By doing so, it is possible to improve the fixing durability performance with respect to the faucet and to obtain the effect of preventing the rotation of the nut.

[0027] Further, a housing portion surrounded by opposed outer and inner peripheral walls is formed at the upper end of the joint body, and a nut is inserted between the outer and inner peripheral walls of the housing portion. Thus, the nut can be clamped between the two curved walls without using any special nut fixing means.

[0028] Further, an accommodating portion is formed at an upper end portion of the joint body, the opening portion being formed in a lower portion, the outer peripheral wall and the inner peripheral wall facing each other, and an upper wall integrally formed at the upper ends of the both walls. ,
The nut is fitted and arranged between the outer peripheral wall and the inner peripheral wall of the housing portion. Therefore, the nut arranged in the housing portion is not visually recognized from the outside, and it is possible to prevent the appearance quality from being deteriorated due to the visual recognition of the nut.

Further, since the outer peripheral wall and the inner peripheral wall are connected to each other by a cross wall to form an accommodating portion, and the nut is fitted into the accommodating portion, the outer peripheral wall and the inner peripheral wall form a cross wall. The outer peripheral wall and the inner peripheral wall are strongly pressed against both sides of the nut arranged in the accommodating portion, and sufficient nut fixing performance can be obtained.

Further, since the nut arranged in the housing portion is a square nut, the nut is accurately formed in the housing portion which is defined by the outer peripheral wall, the inner peripheral wall, and the pair of intersecting walls and has a rectangular shape. The rotation can be prevented, and the effect of preventing the rotation of the nut can be further enhanced .

[Brief description of the drawings]

FIG. 1 is a sectional view taken along the line AA of FIG. 2 showing an embodiment of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a front view of the embodiment.

FIG. 4 is a plan view of a lower cylindrical body of the embodiment.

FIG. 5 is a front view of the lower cylindrical body.

FIG. 6 is a bottom view of the lower cylindrical body.

FIG. 7 is a sectional view taken along the line BB of FIG. 4;

FIG. 8 is a plan view of the upper cylindrical body of the embodiment.

FIG. 9 is a sectional view taken along the line CC of FIG. 8;

FIG. 10 is a right side view of the upper cylindrical body of the embodiment.

FIG. 11 is a bottom view of the upper cylindrical body.

FIG. 12 is a sectional view taken along the line DD in FIG. 11;

FIG. 13 is a plan view of the packing of the embodiment.

FIG. 14 is a front view of the packing.

FIG. 15 is a sectional view taken along the line EE in FIG. 13;

16 is a partially enlarged view of FIG.

FIG. 17 is a plan view showing a conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint main body 2 Upper cylinder 3 Lower cylinder 7 Upper end opening 8 Outer peripheral wall 9 Inner peripheral wall 10 Upper wall 12 Intersection wall 13 Housing part 17 Faucet 18 Square nut 19 Thumb screw 20 Packing 23 Convex

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16L 17/00-17/10

Claims (3)

(57) [Scope of request for utility model registration] An upper end portion of a joint body formed of a resin-shaped upper and lower end opening is screwed with a fixing screw which is screwed in a radial direction, and an end of the fixing screw is connected to an upper end opening of the joint body. In a hose joint for fixing the joint body to the faucet by pressing against the peripheral surface of the faucet fitted inside, a lower part of the joint body is open at the upper end , and the joint body is opposed to the faucet.
Formed on the outer and inner peripheral walls and the upper ends of both walls
And a receiving portion having an upper wall formed therein.
Fit a metal nut between the outer peripheral wall and the inner peripheral wall,
A hose joint wherein the fixing screw is screwed to the nut. 2. An upper and lower opening-shaped cylinder formed of resin.
Fixed to the upper end of the joint body consisting of two bodies
Screw the screw and connect the end of the fixing screw to the upper end opening of the joint body.
The fitting body is pressed into contact with the peripheral surface of the faucet
In the hose joint fixed to  At the upper end of the joint body, opposed outer and inner peripheral walls
Surrounded byTo form a space and the outer peripheral wall
And a pair of opposing cross walls bridged between the inner peripheral wall and
The outer peripheral wall, the inner peripheral wall, and one end
A body-shaped upper wall and a pair of said crossing walls
Formed into a lower opening-shaped receiving portion, and the outer portion of the receiving portion is formed.
Insert a metal nut between the peripheral wall and the inner peripheral wall,The
A fixing nut screwed onto the nut.
Steel fittings. 3. The method according to claim 2, wherein the nut is a square nut.
The hose joint according to claim 2, characterized in that: