JPH0231673Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is a hose connection consisting of a hose connection part of a faucet fitting protruding from a wall surface or a water discharging device such as a shower head, and a connection nut. This invention relates to a hose joint for connecting a hose to a tool, etc.

<Prior Art> As a conventional hose joint of this type, there is one disclosed in, for example, Japanese Utility Model Application Publication No. 60-59895.

This hose joint includes a rubber cap that extends from the outer surface of the hose to the inner surface of the hose through the opening end surface and covers each surface, and is fitted onto the end of the hose.
An outer cylinder is fitted and attached to the outside of the rubber cap, and an inner cylinder that clamps and holds both the inside and outside of the hose via the rubber cap is fitted and expanded inside the rubber cap, and the outer cylinder is expanded. The rubber cap is formed by fitting and inserting a nut for connecting a device on the outside, and the rubber cap has an inner and outer pipe connected to each other via a ring-shaped cover plate, and the length of at least one of the inner and outer pipes is approximately the same as the length of the other. It is made up of three times as much,
The hose is clamped between the inner cylinder and the outer cylinder and connected to the hose connector via a rubber cap.

However, when the hose is clamped and crimped as described above, the inner tube is inserted into the rubber cap fitted onto the hose, and then the expansion device is inserted into the inner tube.
It is necessary to expand and deform the inner cylinder outward by mechanical means using this expanding device. For this reason, special expansion equipment had to be prepared and used, and it was difficult for the user to carry out the expansion on site.

<Technical problem to be solved by the invention> The technical problem to be solved by the invention is that when inserting the inner cylinder, the hose is simultaneously inserted between the inner and outer cylinders without using special expansion equipment. The purpose is to ensure that it is clamped and crimped.

<Means for solving the technical problems> The technical means taken by the present invention to solve the above problems is a joint between a hose and a hose connector, in which the outer cylinder part and the inner cylinder part are connected to one side. A hose holding pipe body is connected at one end via an annular abutment part and has a cylindrical insertion groove formed at the other end, and the hose holding pipe body is inserted into the inner cylinder part from the abutment part side. It consists of an insert pipe that expands the cylindrical part outward and converges the insertion groove, and a cover pipe that is fitted on the outside of the outer cylindrical part to restrict the expansion of the outer cylindrical part, The outer shape of the abutment part is made to correspond to the shape of the hose connector, the hose is inserted into the insertion groove of the hose holding tube, and the cover pipe is inserted into the outside of the outer cylinder part and inserted into the inner cylinder part. The insert pipe is press-fitted from the abutting part side, and the hose is clamped and crimped between the inner and outer cylindrical parts.

In addition, the shape of the side of the contact part of the hose holding tube includes a flanged tube that abuts and engages with the cap nut, a male threaded tube, a female threaded tube, or an annular groove for one-touch fitting. For example, a tube body with an attached tube, etc.

<Operation> Insert the hose into the insertion groove of the hose holding tube, fit the cover pipe on the outside of the outer cylinder, and press-fit the insert pipe into the inner cylinder from the contact side. As a result, the hose is firmly clamped and crimped between the inner and outer cylindrical parts and is fixedly attached to the hose holding pipe body.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a cross-sectional view showing a state in which a hose C is attached to a hose joint A, and this is connected to a hose connector B via a seal D for preventing moisture from getting wet.

The above-mentioned hose C is a conventionally well-known reinforced hose in which a braid C ₂ is built into the middle layer of a hose body C ₁ molded from a soft resin material.

The hose connector B includes a connector main body b ₁ such as a faucet metal fitting protruding from the wall of a bathroom or a hose connection part of a water discharging device such as a shower head;
A connecting nut that is screwed onto the outer periphery of this connector body _b1
b It is a well-known one consisting of ₂ .

The hose joint A has an outer cylindrical part 1a and an inner cylindrical part 1b connected to each other via an annular contact part 1c at one end, and a cylindrical insertion groove 101 is formed at the other end. A contact portion 1 is attached to the hose holding pipe body 1 and the inner cylinder portion 1b.
Insert from the c side into the insertion groove 101 of this inner cylinder portion 1b.
It consists of an insert pipe 2 that allows the sides to expand, and a cover pipe 3 that is fitted onto the outside of the outer cylinder part 1a to restrict the expansion of the outer cylinder part 1a.

The hose holding pipe body 1 is made of synthetic resin and has an outer cylinder part 1.
a is formed into a cylindrical shape whose inner circumferential surface and outer circumferential surface are substantially parallel to each other, and the inner cylindrical portion 1b has an inner diameter that is similar to the abutting portion 1.
It is formed into a cylindrical shape with a taper that decreases from the c side toward the insertion groove 101 side, and a stopper part 102 is provided in a stepped manner on the small diameter side of the inner surface,
A hose C is fitted into the insertion groove 101.

The taper of the inner cylindrical portion 1b can be formed not only in a continuous flat surface but also in a step shape such that a plurality of step portions are continuous.

Moreover, the length of the inner cylindrical portion 1b is appropriately longer than the outer cylindrical portion 1a, so that the hose C can be easily guided and inserted.

The insert pipe 2 is inserted into the inner cylinder part 1b of the hose holding tube body 1 from the contact part 1c side with a large diameter, thereby expanding the inner cylinder part 1b outward and converging the insertion groove 101. The cylindrical part 1 is made of material such as metal or ceramic.
It is formed into a cylindrical shape having an outer diameter approximately the same as the inner diameter of the large diameter end of b. Further, it is also possible to use a material that can be expanded mechanically, including a shape memory alloy.

The cover pipe 3 is made of metal or synthetic resin and is formed into a cylindrical shape having an inner diameter that is approximately the same as the outer diameter of the outer cylinder portion 1a.

The contact portion 1c is the connector body of the hose connector B.
b ₁ This is to prevent water from leaking out of the hose holding pipe body 1 by coming into contact with the end face of the water leakage prevention gasket D provided at the tip, and the outer cylindrical part 1a and the inner cylindrical part 1b are connected. The inner bottom part 103 of the insertion groove 101 is formed by the outer cylindrical part 1a, and an abutting collar 104 is provided protruding from the outer periphery of the outer cylinder part 1a.

4 and 5 show other embodiments of the lateral shape of the abutment part in the hose holding tube 1, and FIG. 4 shows a male threaded pipe 105 integrated into the side end of the hose holding tube 1 It is formed in a protruding manner, and the hose C can be connected by simply screwing it into the female threaded part _b3 of the other party.

FIG. 5 shows an annular groove 1 at the side end of the hose holding tube 1.
A plug-in tube 107 with 06 carved thereon is formed protruding from the same body, and can be connected in one-touch using a ball _b5 that protrudes and retracts in the radial direction attached to the receiving cylinder _b4 of the other party.

Next, a method for connecting the hose C to the hose connector B using the hose joint A will be described.

First, fit the connecting nut b ₂ and the cover pipe 3 on the outside of the hose C, and insert the end of the hose C into the insertion groove 101 of the hose holding pipe body 1 at the deep bottom 10.
Fit and install up to 3. After that, the cover pipe 3 is inserted into the outer cylinder part from the insertion groove 101 side and the collar 104 is inserted.
At the same time, the insert pipe 2 is press-fitted into the inner cylinder part 1b from the contact part 1c side to the position of the stopper part 102, and the inner cylinder part 1b is expanded outward. The insertion groove 101 is installed with the insertion groove 101 side being convergently deformed due to the shape effect of the taper. Then, the contact portion 1c of the hose holding pipe body 1
is brought into contact with the end face of the connector main body b ₁ with the water leakage prevention gasket D interposed therebetween, and the pre-equipped connecting nut b ₂ is screwed onto the connector main body b ₁ . In this way, the connection of the hose C using the hose joint A is completed.

Thus, in the hose joint A of the present invention, the insert pipe 2 expands the inner cylinder part 1b outward, and the cover pipe 3 restricts the expansion of the outer cylinder 1a, so that the hose C can be connected to the inner and outer cylinder parts 1b. , 1a to fix and hold the hose C. In this state, the connecting nut b ₂ is attached to the cover pipe 3
is strongly pressed against the abutment collar 104 to ensure watertightness between the water leakage prevention gasket D and the abutting portion 1c of the hose holding pipe body 1 and the connector body _b1 .

In the above embodiment, the insert pipe 2
When a material that can be mechanically expanded is used, the inner cylinder part 1b is further expanded outward by being expanded using an expansion device after fitting into the inner cylinder part 1b. The hose C is more firmly clamped and held between the inner and outer cylindrical parts 1b and 1a.

In this embodiment, the inner cylindrical portion 1b of the hose holding tube 1 is configured to expand outward, and the inner surface of the inner cylindrical portion 1b is formed with a taper, and the insert pipe 2 is configured so that the inner and outer circumferential surfaces thereof are mutually connected. However, conversely, the inner cylindrical portion 1b is formed into a flat shape with inner and outer circumferential surfaces parallel to each other, and the outer circumferential surface of the insert pipe 2 is formed into a tapered shape or multiple continuous flat surfaces. It is also possible to form the step part into a continuous tapered shape.

In this case, the taper of the insert pipe 2 allows the inner cylindrical portion 1b to be press-fitted and expanded.

Further, by applying or injecting an adhesive into the insertion groove 101 of the hose holding tube body 1, the hose C can be more firmly clamped and held between the inner and outer cylindrical parts 1b and 1a.

<Effects of the invention> Since the invention is constructed as described above, the hose is inserted into the insertion groove of the hose holding tube, and the insert pipe is brought into contact with the cover pipe inserted into the outside of the outer cylinder. By press-fitting from the side, the hose can be firmly clamped and crimped between the inner and outer cylindrical parts.

Therefore, the hose can be connected to the hose connector while maintaining high watertightness without using special expansion equipment as in the past.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway front view showing a state in which a hose is attached and connected to a hose connector, and FIG.
Line sectional view, Figure 3 is a sectional view of each component, Figure 4 is a sectional view of each component.
FIG. 5 is a sectional view showing another embodiment. In the figure, A...Hose joint, B...Hose connector, C...Hose, 1...Hose holding pipe, 1a
...Outer cylinder part, 1b...Inner cylinder part, 1c...Abutment part,
101...Insertion groove, 104...Butting tsuba, 105
... Male thread pipe, 106 ... Annular groove, 107 ... Insert pipe, 2 ... Insert pipe, 3 ... Cover pipe.

Claims (1)

[Scope of utility model registration request] A joint between a hose and a hose connector, in which an outer cylindrical part and an inner cylindrical part are connected at one end via an annular contact part, and a cylindrical insertion groove is formed at the other end. an insert pipe that is fitted inside the inner cylinder part from the abutting part side to converge the insertion groove side between the inner and outer cylinder parts; The outer shape of the abutting part of the hose holding tube is made to correspond to the shape of the hose connector, and the hose is inserted into the insertion groove of the hose holding tube. A hose joint characterized in that a cover pipe is fitted on the outside of the outer cylinder part, and an insert pipe is press-fitted into the inner cylinder part from the contact part side, so that the hose is sandwiched and crimped between the inner and outer cylinder parts.