JP2009085275A - Connector for connecting hose - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector used for connecting synthetic resin hoses or synthetic resin tubes. <P>SOLUTION: The connector for connecting the hoses is provided with a nipple 1 to which the hose 100 can be inserted, an upper shell 5a and a lower shell 5b having semi-cylindrical shapes capable of being fitted to the nipple 1, and an elastic body deformation ring 10 for fastening the hose. The upper shell 5a and the lower shell 5b are fastened with a bolt 21, and the hoses are connected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a hose connection connector used for connecting a hose or tube made of synthetic resin or the like.

Conventionally, there are various metal fittings for connecting a hose or tube and a device. For example, there is a type in which a hose is forcibly inserted into a bamboo shoot nipple and tightened with a metal hose band from the outside of the hose.
In addition, in order to give pressure resistance, there is a type in which a bamboo child-shaped metal fitting hose having an outer shape slightly larger than the inner diameter of the hose is forcibly inserted and a hard ring or the like is tightened with a tightening nut or the like from the outside of the hose.
Since these connection methods are well known, no literature is listed.

In connecting the hose, the hose is forcibly inserted into the metal fitting, so that the hose can be swelled and inserted. In this way, when the hose swells easily, it can be easily connected.
However, recently, in order to prevent refraction when bent as an industrial hose, there is a hose in which a metal wire or a hard resin wire is inserted in a spring shape in the thick part of the hose.
This type of hose increases the strength of the hose itself, such as refraction, crushing, and pressure resistance, by inserting a metal wire or the like into the thick part, but it is difficult to insert it into an outer diameter fitting that is larger than the inner diameter of the hose. It is necessary to increase the tightening force and tighten.
Therefore, the tightening force of the hose band that is generally used causes insufficient tightening and contributes to leakage. Further, when connecting the hose, it is necessary to tighten using a dedicated device (clamping machine) or the like.
Therefore, the invention of the present application provides a connector that can be easily tightened to the hose or the like containing the hard wire.

The connector for hose connection of claim 1 includes a nipple into which a hose can be inserted, a semicircular upper shell that can be fitted into the nipple, a lower shell, and an elastic ring for fastening the hose. Further, this hose connection connector connects a hose through the elastic ring by inserting a hose into which an elastic ring has been inserted in advance from the end of the hose into the nipple, tightening the upper shell and the lower shell with a bolt. .
In addition, an elastic ring groove in which an elastic ring can be mounted is formed in the upper shell and the lower shell, and when the bolt is tightened through a bolt hole for tightening the upper shell and the lower shell, the elastic ring is compressed. And firmly connected to the hose.

According to a second aspect of the present invention, an elastic ring groove into which a plurality of elastic rings can be mounted is formed in the upper shell and the lower shell, and they are connected by a plurality of elastic rings.
According to a third aspect of the present invention, in the hose connector, the inner diameter of the elastic ring is a perfect circle, and the outer diameter is an elliptical cylinder. Alternatively, the elastic ring is formed into an elliptical inner diameter and a perfect cylindrical shape outer diameter. These elastic rings can be tightened more firmly by compression.
According to a fourth aspect of the present invention, the thick portion and the thin portion are formed on the elastic ring, and the convex portion is formed on the thin portion, thereby increasing the pressing force for tightening the thin portion.

  The hose connector of the present application can be firmly fastened to the hose by the elastic ring.

A hose connector will be taken up as a connector of the present embodiment and will be described with reference to the drawings.
1A is a front sectional view of the connector before tightening after inserting the hose, FIG. 1B is a side sectional view, FIG. 2A is a front sectional view of the connector after assembly, and FIG. FIG. 3 is a front view and side view of the nipple 1, the elastic body ring 10, the upper shell 5 a and the lower shell 5 b, and a front sectional view of the hose 100.

A rotating head 1a for a spanner is formed on the outer periphery of the center of the cylindrical chin-shaped nipple 1 made of metal or the like, and on the left side of the rotating head 1a is a device for mounting equipment. An instrument screw 1b is formed. In addition, the attachment method of the apparatus in the left side of this nipple 1 should just be couple | bonded via a band etc. other than the said apparatus screw 1b form, and makes it respond | correspond suitably to the kind of apparatus.
On the other hand, a concave groove 3 into which the end portions of the upper shell 5a and the lower shell 5b can be inserted is formed on the outer periphery on the right side of the rotating head 1a. Convex part 4a is formed. The outer diameter of the convex portion 4a is the same as or slightly smaller than the inner diameter of the hose 100 so that the hose 100 can be easily inserted, and the convex portion 4a is formed to be inclined downward toward the insertion side. Has been.

The elastic ring 10 is a cylindrical body having a through hole, and has an inner diameter that is a perfect circle and an outer diameter that is an ellipse. Since the radius of the upper and lower portions 10a having an outer diameter of the elastic ring 10 is equal to the inner diameter of the elastic ring groove 12 formed in the upper and lower shells 5a and 5b, the elastic ring 10 is connected to the upper and lower shells 5a and 5a. When inserted into the elastic ring groove 12 of 5b, it is stored in the elastic ring groove 12 without any gap.
Further, the thickness of the upper and lower portions 10 a of the elastic ring 10 is thicker (larger) than the depth of the elastic ring groove 12, and the thickness of the left and right portions 10 b is formed to be substantially equal to the depth of the elastic ring groove 12. It is.

That is, since the thickness of the upper and lower portions 10a of the elastic ring 10 is thicker than the depth of the elastic ring grooves 12 of the upper and lower shells 5a and 5b, the upper and lower portions 10a of the elastic ring 10 are inserted into the elastic ring grooves 12. When the upper and lower shells 5a and 5b are covered, a portion larger than the thickness protrudes from the elastic ring groove 12 in the inner diameter direction. When the elastic ring 10 that protrudes is pressed by the upper and lower shells 5a and 5b, the elastic ring 10 bites into the outer surface of the hose 100 and is firmly tightened.
The elastic ring 10 has a uniform axial thickness and a non-uniform circumferential thickness. However, the elastic ring 10 is formed in the center of the upper shell 5a and the lower shell 5b. It can be inserted into the groove 12.
The number of elastic rings 10 that can be inserted into the elastic ring groove 12 is one in this embodiment, but this number can be selected as appropriate.

The upper shell 5a and the lower shell 5b are semicircular, the combined surface is planar, and the inner diameter when the upper shell 5a and the lower shell 5b are combined is equal to the outer diameter of the hose 100.
The upper shell 5a and the lower shell 5b are symmetrical on the left and right sides, and can be used by being set on either side.
Further, when the upper shell 5 a and the lower shell 5 b are combined, the volume of the elastic ring groove 12 is formed smaller than the volume of the elastic ring 10, and the elastic ring 10 protrudes from the elastic ring groove 12. However, it can bite into the hose 100 or the tube and be tightened more firmly.

An elastic ring groove 12 into which the elastic ring 10 is inserted is formed at the center of the upper shell 5a and the lower shell 5b, and the end is fitted into the concave groove 3 formed in the nipple 1. A convex body 15 larger than the diameter of the hose that can be combined is formed.
Also, screwed bolt holes 20 are formed at four locations on the end portions of the upper shell 5a and the lower shell 5b, and bolts 21 are inserted into these bolt holes 20 to tighten the upper shell 5a and the lower shell 5b. Then, connect the hose 100.

Next, a method of connecting the connector having the above configuration to the hose will be described with reference to FIGS. 2, 4A, and 4B.
4 (A) and 4 (B) illustrate the characteristics of the shape of the elastic ring 10, and show the relationship among the shapes of the upper shell 5a, the lower shell 5b, and the elastic ring 10. FIG.
The upper shell 5a and the lower shell 5b are semicircular. Further, even when the outer diameter of the elastic ring 10 is a perfect circle (A) or an ellipse (B), the volume is the same, and the inner diameter of the elastic ring 10 is the same as the outer diameter of the hose 100. It is.

(1) When the outer diameter of the elastic ring 10 is a perfect circle (A)
As shown in FIG. 4A, when the outer diameter of the elastic ring 10 is a perfect circle, the outer diameter of the perfect circle is larger than that of the upper shell 5a and the lower part as compared with the elastic ring 10 having an elliptical outer diameter. It becomes larger than the inner diameter (R) of the shell 5b. For this reason, when the upper shell 5a and the lower shell 5b are inserted into the elastic body ring 10 having an outer diameter of a perfect circle, the upper and lower shells 5a and 5b can be inserted to the middle of the elastic body ring 10, and the upper shell 5a and the lower shell 5b can be inserted. The distance between 5b is L1, and this distance L1 is the tightening amount.
(2) When the outer diameter of the elastic ring 10 is a perfect circle (B)
On the other hand, the elastic ring 10 having an elliptical outer diameter can be formed to have the same inner diameter (R) as the upper shell 5a and the lower shell 5b, and the volume can be adjusted by the thickness of the top of the ellipse.
Therefore, when the upper shell 5a and the lower shell 5b are inserted into the elastic body ring 10 having an elliptical outer diameter, the upper and lower shells 5a and 5b cover the elastic body ring 10, and the distance between the upper shell 5a and the lower shell 5b is L2 and this distance L2 is the tightening amount.
In this way, by making the outer diameter of the elastic ring 10 elliptical, when tightening the upper shell 5a and the lower shell 5b, the tightening amount can be L1> L2.
Therefore, by making the outer diameter of the elastic ring 10 elliptical, it is easy to tighten, and the elastic ring 10 can be prevented from jumping out from the upper shell 5a and the lower shell 5b, and the grip force increases by biting into the outer periphery of the hose. To do.

Next, in connecting the connector to the hose, first, the elastic ring 10 is inserted from the end of the hose 100.
Next, the hose 100 is inserted into the hose insertion cylinder 4 of the nipple 1, and the upper shell 5 a and the lower shell 5 b are placed on the outer periphery of the hose 100 so that the mounted elastic ring 10 is mounted in the elastic ring groove 12. Install.
Bolts 21 are inserted into bolt holes 20 formed at the four ends of the upper shell 5a and the lower shell 5b, and tightened evenly.

Therefore, the tightened state will be described with reference to FIG. 2. The convex portion 15 formed at the ends of the upper shell 5a and the lower shell 5b is a concave portion formed on the right outer periphery of the rotating head 1a of the nipple. The nipple 1 is not detached from the hose 100 even when an internal pressure is applied in the hose or a tensile load is applied to the hose by fitting into the groove 3.
Further, the elliptical elastic ring 10 is pressed by the upper shell 5a and the lower shell 5b from the apex of the ellipse, and bites into the outer peripheral surface of the hose 100 as much as it is suppressed.

Even when the outer diameter of the elastic ring 10 is elliptical, the inner diameter when the upper shell 5a and the lower shell 5b are combined is a perfect circle, and the elastic ring groove formed in the upper shell 5a and the lower shell 5b. Since 12 is also a perfect circle, the elliptical elastic ring 10 is also a perfect circle.
On the other hand, the one having a perfect circle inside diameter is deformed into an ellipse by pressing, but the thickness of the elastic ring 10 is dispersed in the circumferential direction when the thick portion 10a bites into the outer periphery of the hose 100. Is done.
That is, when the elastic ring 10 is tightened in the elastic ring groove 12, the outer periphery of the elastic ring 10 becomes a perfect circle and the inner diameter becomes an ellipse, but the outer diameter and the inner diameter are initially uneven. However, it becomes uniform at the end, and evenly enters the outer periphery of the hose 100.
Further, in the elastic ring 10 shown in FIG. 3, the inner diameter of the through hole is a perfect circle and the outer diameter is an ellipse, but the inner diameter of the through hole may be an ellipse and the outer diameter may be a perfect circle.

5A to 5D are a front view and a side view showing various shapes of the elastic ring 10, and FIGS. 5E to 5F are a front view showing the shape of the elastic ring 10. It is a sectional side view.
The elastic ring 10A shown in FIG. 5A is the same as the elastic ring 10 shown in FIG. 3, and is a cylindrical body having a through-hole having a uniform thickness in the axial direction. The inner diameter of the elastic ring 10A is a perfect circle, the outer diameter is an ellipse, the upper and lower parts 10a are thicker, and the left and right parts 10b are thinner than the upper and lower parts 10a.
The elastic ring 10B shown in FIG. 5B is the same as the elastic ring 10A except for the shape of the left and right portions 10b. The left and right portions 10b are newly formed with local convex portions 10c integrally in the outer surface axial direction. By forming the convex portions 10c, after the upper and lower shells 5a and 5b are tightened, the convex portions 10c are It plays in the role of tightening the outer surface of the hose 100 more deeply into the elastic ring groove 12.

The elastic ring 10C shown in FIG. 5C is substantially the same as the elastic ring 10B. This elastic body ring 10C is different from the elastic body ring 10B integrally formed of the same material as described above, and is formed by mounting the convex portion 10d with a different material such as resin and has the same function as the elastic body ring 10B. It is.
In the elastic ring 10D shown in FIG. 5D, a convex portion 10g made of a different material (resin or the like) and a blade 10e are integrally formed on the outer surface of the elastic ring 10A, and the parts are formed on the elastic ring 10A. It is attached to the recess 10f.
When the elastic ring 10D is tightened by attaching the elastic ring 10D to the upper and lower shells 5a and 5b, when the elastic ring 10D sinks into the elastic ring groove 12, the elastic friction ring 10D can Since the tightening force is reduced, it can be easily tightened and the outer surface of the hose 100 can be tightened more strongly.

An elastic ring 10E shown in FIG. 5 (E) is obtained by simultaneously forming a cylindrical portion 10i on a flange portion 10h formed on one side of the elastic ring 10A.
The elastic ring 10E has the same function as the elastic ring 10A, but has a cap shape, so that the elastic ring 10E can be easily attached when inserted into the end of the hose 100 and when the connector is tightened.
An elastic ring 10F shown in FIG. 5 (F) is manufactured by simultaneously forming a cylindrical portion 10i on a flange portion 10h formed on one side of the elastic ring 10B.
The elastic ring 10F has the same function as that of the elastic ring 10B. However, since the elastic ring 10F has a cap shape, the attachment position when the connector is inserted into the end of the hose 100 and when the connector is tightened is easy.

Next, FIG. 6 and FIG. 7 are connectors using a plurality of elastic rings, and the same parts as those shown in FIG.
6 (A) is a front sectional view of the connector before assembly, (B) is a side sectional view, FIG. 7 (A) is a front sectional view of the connector after assembly, and (B) is a side sectional view. is there.
As described above, when a plurality of elastic rings are used, the ring can be tightened more reliably, and the operation is the same as that of the connector shown in FIGS.

As described above, in the invention of the present application, the elastic ring having an inner diameter (through hole) of a perfect circle and an outer diameter of an ellipse is in a state where the elastic ring uniformly bites into the outer periphery of the hose, thereby preventing leakage. A hose connector.
The shape of the elastic ring is such that the inner diameter (through hole) is a perfect circle and the outer diameter is an ellipse, but the inner diameter of the through hole may be an ellipse and the outer diameter may be a perfect circle.
Moreover, although the invention of the present application has been described with respect to the case where it is applied to a hose in the above example, it can be applied to tubes and the like in addition to various types of hoses.

(A) is front sectional drawing of the connector before an assembly | attachment, (B) is side sectional drawing. (A) is front sectional drawing of the connector after an assembly | attachment, (B) is side sectional drawing. It is a component diagram of a connection connector. It is a figure which shows the relationship between the shape of an upper-and-lower shell and an elastic body ring. (A)-(D) are the front views and side views of various elastic body rings, and (E)-(F) are the front views and side sectional views of the elastic body rings. (A) is front sectional drawing of the connector before an assembly provided with two or more elastic body rings, (B) is a sectional side view. (A) is front sectional drawing of the connector after an assembly provided with two or more elastic body rings, (B) is side sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nipple 4 Hose insertion cylinder 4a Convex part 5a Upper shell 5b Lower shell 10 (10A-10F) Elastic body ring 12 Elastic body ring groove 20 Bolt hole 21 Bolt

Claims (4)

A nipple into which a hose can be inserted, a semicircular upper shell and a lower shell that can be fitted into the nipple, and an elastic ring for fastening the hose,
A hose connector for connecting a hose through the elastic ring by inserting a hose into which an elastic ring has been inserted from the end of the hose in advance into the nipple, tightening the upper shell and the lower shell with a bolt,
Forming an elastic ring groove into which the elastic ring can be mounted in the upper shell and the lower shell;
A hose connector comprising a bolt hole for fastening to the upper shell and the lower shell.   The hose connector according to claim 1, wherein a plurality of elastic ring grooves are formed in the upper shell and the lower shell.   The hose according to claim 1 or 2, wherein the elastic ring has an inner diameter of a perfect circle and an outer diameter of an ellipse, or an inner diameter of an ellipse and an outer diameter of a cylinder having a perfect circle. Connector for connection. The hose connector according to claim 1 or 2, wherein a thick part and a thin part are formed on the elastic ring, and a convex part is formed on the thin part.

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