JP2008208898A - Hose connecting flange type connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flange type connector to be used for the connection of a synthetic resin hose or tube. <P>SOLUTION: A flanged coupling 10 integrally gearing with a nipple 1 into which the hose 100 can be inserted is fastened to a right flange 15 with bolts 22. The outer diameter of the hose is shrunk and fastened by swelling protruded portions 22, 25 and a recessed portion 23 which are formed on and in the outer peripheral face of a fastening member 20, between the flanged coupling 10 and the right flange 15. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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

A conventional connector for connecting a hose is disclosed in Japanese Patent Application No. 2006-168630 (FIG. 8), and has a structure in which a hose is inserted into a nipple and tightened with a cap nut.
The connector for hose connection disclosed in the document has a nipple 101 into which the hose 100 can be inserted, and a cap nut 110 that meshes with the nipple 101. Also, in this connector, a cap nut 110, a buckling 107, a cap 105 and an inner 102 as connector parts are inserted into the nipple 101 in advance at the end of the hose, and the cap nut 110 is tightened.

  In addition, this connector has a protrusion 105b, a groove 105c, and a protrusion 105b formed on the outer periphery of the cap 105, and is located on the inner periphery of the hose 100 at a position substantially corresponding to the groove 105c formed on the outer periphery of the cap 105. A biting protrusion 102 b is formed on the inner 102.

In the connector of this configuration, when the cap nut 110 is engaged with the nipple 101 and rotated, the protruding body 105b, the groove 105c, and the protruding body 105b are deformed into a V shape, and the groove 105c extends from the outer peripheral side of the hose 100 toward the central axis. To prevent leakage.
Further, the protrusion 102b that can bite into the inner periphery of the hose 100 is formed on the inner 102 at a position substantially corresponding to the protrusion 105b formed on the outer periphery of the cap 105. 102b bites into the inner periphery of the hose to prevent it from being pulled out.
Japanese Patent Application No. 2006-168630

When the connector is used for a hose having a large diameter made of a soft resin, a large tightening torque is required when the cap is tightened by engaging with a nipple and a cap nut, resulting in insufficient tightening. This shortage of tightening causes a phenomenon of leakage of fluids and the like, resulting in a large loss due to environmental sanitation.
Therefore, the present invention provides a hose-connected flange-type connector that eliminates such problems.

The flange-type connector for hose connection according to claim 1, wherein a fastening member is inserted between a nipple into which a hose can be inserted, a flanged coupling that meshes with the nipple and is integrated with the nipple, and a right flange, The outer diameter of the hose is tightened by the bulging in the central axis direction of the convex portion and the concave portion formed on the outer peripheral surface by the compressing action of the tightening member in the vertical axis direction.
According to a second aspect of the present invention, there is provided a flange-type connector for connecting a hose, wherein a close-contact groove is formed in the extended portion of the nipple at a position corresponding to the recess formed on the outer peripheral surface of the fastening member. As the part bites into and tightens tightly, the tensile strength increases.

Further, the flange-type connector for hose connection according to claim 3 forms a coupling vertical screw toward the central axis in the flanged coupling, and forms a nipple set hole at a position corresponding to the coupling vertical screw in the nipple. A bolt is screwed into the coupling vertical screw to integrate the nipple and the flanged coupling.
According to a fourth aspect of the present invention, the hose connection flange-type connector comprises a nipple comprising a nipple body and a joined body, and the nipple body is rotatably attached to a fitting groove formed in the joined body. Useful for hose.

  The invention of the present application is a flange-type connector, and during assembly work, even if the bolt is tightened with a small tightening torque of a general-purpose tool, the inside of the convex and concave portions formed on the outer peripheral surface of the tightening member is bulged in the central axis direction. By pressing in the direction of the central axis of the hose, it is possible to prevent leakage by closely contacting the extended portion of the nipple.

A hose connection flange type connector will be described with reference to the drawings.
1 is a left side view, a front view, a cross-sectional view, and a right side view of the connector before assembly, and FIG. 2 is a front view and a cross-sectional view of the connector after assembly. 3 and 4 are parts diagrams, and FIG. 5 is an assembly procedure diagram.

A rotating head 2 for a wrench is formed on the outer periphery of the center of the cylindrical nipple 1 made of metal or the like. On the left side of the rotating head 2 is an equipment screw 3 for equipment attachment. Is formed.
On the other hand, the right outer periphery of the rotating head 2 is formed with a nut screw 4 that meshes with the screw portion 11 formed on the flanged coupling 10 formed of metal, hard resin, or the like. An extending portion 5 that can be in close contact with the peripheral surface is formed.
Further, a close contact groove 6 is formed on the outer periphery of the extended portion at a position corresponding to a valley portion of a tightening member described in detail later.

The flanged coupling 10 made of metal or the like has a cylindrical shape in which a hose can be inserted into the extending portion 5 and the outer periphery thereof can be covered, and a flange 12 is attached to an end portion.
In addition, an uneven portion 13 having a lower left inclined shape is formed on the joint surface of the flange 12 so that a later-described tightening member 20 can be pressed against the later-described right flange 15 joint surface. It can be pressed with.
The flange 12 is formed with three screw holes 14 so as to be bolted.

The right flange 15 to be joined to the flanged coupling 10 is made of metal or the like, and the fastening member 20 can be pressed against the joint surface of the flanged coupling 10 on the joint surface of the right flange 15. A concavo-convex portion 16 having a lower right inclined shape is formed and can be pressed into the fastening member 20.
The right flange 15 is formed with three through holes 17 so that the flanged coupling 10 and bolts 22 can be tightened.

Next, the fastening member 20 is made of an elastic material such as rubber, and has a cylindrical shape with an inner diameter capable of fitting the hose, and an uneven portion 21 is formed on the inner peripheral surface thereof. On the other hand, smooth curved convex portions 23, concave portions 24 and convex portions 25 are formed on the outer peripheral surface of the fastening member 20. When this shape bulges, which will be described later, the concave portion 24 is in close contact with the hose in a deflated state.
Further, the top of the convex portion 23 is chamfered in an inclined shape, and is joined to the concave portion 13 having the lower left slope and the concave portion 16 having the lower right slope, and the convex portion 13 and the concave portion 16 having the slope. Is narrowed, the convex portions 23 and 25 of the fastening member 20 are compressed in the vertical axis direction, and can be compressed by the bulging deformation of the concave portion 24 in the central axis direction. The number of convex portions and concave portions formed on the outer peripheral surface of the fastening member 20 can be selected as appropriate.

Further, FIG. 4 shows other shapes of the fastening members 20A, 20B, and 20C, and the convex portions 23 and the concave portions 24 have different shapes.
The convex part 23a and the convex part 25a formed on the outer peripheral surface of the fastening member 20A of (A) have a substantially rectangular cross section, the top part is formed in an inclined shape, and the shape of the central convex part 24a is a rectangular cross section. .
The rectangular convex portion 24a has a larger area in close contact with the outer periphery of the hose than the concave portion 24 of the concave stripe.
Further, in the tightening member 20B of (B), the convex portion 23b and the convex portion 25b are the same as (A), but the sectional shape of the central convex portion 24b is a semicircular shape. The area where the semicircular convex portion 24b is in close contact with the hose is approximately the same as the convex portion 24a.

The fastening member 20C in (C) is the same as (A) in the convex portion 23c and the convex portion 25c, but has a rectangular cross-sectional shape made of a different material in the concave portion between the convex portion 23c and the convex portion 25c. A ring 24c is inserted, and this ring 24c has an inclined slit formed at one place on the circumference. Therefore, the ring 24c is split into two by the slit, so that it can be easily inserted and reduced in the central axis direction.
The fastening members 20A, 20B, and 20C shown in the above (A) to (C) are selected in consideration of the bulging amount when tightened.

Next, the procedure for assembling the hose using the hose-connected flange-type connector having the above-described configuration will be described with reference to FIG.
First, the screw portion 11 and the nut screw 4 are engaged with each other and coupled to the nut screw 4 on the right side of the nipple 1 while turning the coupling 10 with the flange.
On the other hand, the right flange 15 is inserted into the hose 100, and then the fastening member 20 is inserted.
And the edge part of the said hose 100 is inserted in the outer periphery (inner peripheral part of the coupling 10 with a flange) of the extension part 5. As shown in FIG. Thereafter, the bolt 22 is inserted into the through-hole 17, and then engaged with the screw hole 14 and tightened with the bolt 22.

By this tightening, the tightening member 20 is sandwiched between the uneven portion 13 with the lower left inclined shape and the uneven portion 16 with the lower right inclined shape, and the convex portion 23, the concave portion 24, and the convex portion 25 are brought into a combined state, and on the hose 100 side. By bulging and pressing the hose 100 in the direction of the central axis, the hose 100 comes into close contact with the bitten state, and the hose 100 bites into the close contact groove 6 (see FIG. 2).
This flange-type connector is tightened with a bolt 22 so that the outer diameter of the hose 100 is reduced due to the bulging of the tightening member 20 and is firmly fixed in the close-contact groove 6 to prevent leakage, and the hose is prevented from being pulled out. To do.

Next, FIG. 6 shows a structure in which the coupling between the flanged coupling 10 and the nipple 1 is coupled by the coupling vertical screw 31 and the nipple set hole 32, and only the differences from the connector shown in FIG. The parts are given the same reference numerals.
A nipple set hole 32 in the central axis direction is formed on the right side of the rotating head 2 of the nipple 1 in place of the screw portion 11 shown in FIG. On the other hand, a coupling vertical screw 31 is also formed in the flanged coupling 10 at a position corresponding to the nipple set hole 32.

  In the flange-type connector of this structure having a hose connection, first, the flanged coupling 10 and the nipple 1 are coupled and fixed by a bolt through a coupling vertical screw 31 and a nipple set hole 32. Then, the end portion of the hose 100 is inserted into the outer periphery of the extending portion 6 (the inner peripheral portion of the flanged coupling 10), and then the bolt 22 is inserted into the through-hole 17, and then engaged with the screw hole 14. The tightening with the bolts 22 is the same as the hose connection flange type connector of FIG.

Next, FIG. 7 is different from the hose-connected flange type connector shown in FIG. 1 in the configuration of the nipple 1 and only the parts different from the connector shown in FIG. 1 will be described.
The nipple 1 includes a nipple main body 40 and a joined body 50. The nipple main body 40 is formed with a turning head 41 for a spanner, and an equipment screw 42 for equipment attachment is formed on the left side of the turning head 41. Further, a seal groove is formed in the nipple main body 40, and a sealing action with the joined body 41 is made by a sealing material 44 such as rubber.

On the other hand, a fitting groove 52 is formed between the protrusion 51 and the protrusion 53 in the joined body 50 so that the nipple main body 40 can be rotated, and on the right side of the right protrusion, the flanged coupling 10 is formed. A nut screw 55 that meshes with the formed screw portion 11 is formed. Moreover, the extension part 5 and the contact | adherence groove | channel 6 which are the same as the connector of FIG. 1 are formed.
In addition, as a method of inserting the nipple body 40 into the fitting groove 52, the nipple body 40 is inserted into the left end portion of the joined body 50 which is initially cylindrical, and then the left end portion of the joined body 50 is pressed or the like. The nipple body 40 can be rotated with respect to the joined body 50 by pressing to form the protrusion 51.
And since it is the nipple main body 40 which can be rotated with respect to the conjugate | zygote 50 in this way, a large diameter hose can be easily attached to an apparatus etc.

In other words, when connecting a small diameter hose, the tightening torque can be small, so it can be tightened with a general-purpose tool in the field. However, large diameter hoses have large tightening torque and require special field tools. For this reason, special tools are required. A hose with a connector attached at the factory is brought to the site and assembled in advance. At this time, since the hose and the connector are integrated, it is necessary to rotate the hose and the connector together when screwing.
For this reason, if the nipple main body 40 is rotatable with respect to the joined body 50, only the nipple main body 40 needs to be turned when attaching to the apparatus, and a large-diameter hose can be easily attached.

It is a left side view, a front view, a cross-sectional view, and a right side view of the connector before assembly. It is the front view and sectional drawing of the connector after an assembly | attachment. It is front sectional drawing which shows the nipple of a component, and a coupling with a flange. It is a figure which shows the fastening member of a component, a right flange, a volt | bolt, and the fastening member of another shape. It is a figure which shows the assembly point. It is front sectional drawing of the connector of another shape. It is front sectional drawing of the connector of another shape. It is front sectional drawing of the connection state by the conventional connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nipple 5 Extension part 6 Contact groove | channel 10 Coupling with flange 15 Right flange 20 Tightening member 23 Convex part 24 Concave part 25 Convex part 31 Coupling vertical screw 32 Nipple set hole 40 Nipple main body 50 Joint body 52 Fitting groove

Claims (4)

A nipple capable of inserting a hose, a flanged coupling that meshes with the nipple, and a flange-type connector for hose connection that tightens the flanged coupling and the right flange with a bolt,
A fastening member is inserted between the flanged coupling and the right flange, and the convex portion formed on the outer peripheral surface and the inner side of the concave portion are bulged in the central axis direction by the compressive action of the fastening member in the longitudinal axis direction. Hose connection flange type connector that tightens the outer diameter of the hose.   The flange-type connector for hose connection according to claim 1, wherein a close-contact groove is formed in an extended portion of the nipple at a position corresponding to a concave portion formed on the outer peripheral surface of the fastening member.   A coupling vertical thread toward the central axis is formed on the flanged coupling, a nipple set hole is formed in the nipple at a position corresponding to the coupling vertical thread, and a bolt is screwed into the coupling vertical thread to attach the nipple and flange. The hose connection flange type connector according to claim 1 or 2, wherein the coupling is integrated. The hose connection flange type connector according to claim 1 or 2, wherein the nipple 1 is constituted by a nipple body and a joined body, and the nipple body is rotatably attached to a fitting groove formed in the joined body.

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